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[chromium-blink-merge.git] / third_party / polymer / core-component-page / core-component-page.html

<!--
Copyright (c) 2014 The Polymer Project Authors. All rights reserved.
This code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt
The complete set of authors may be found at http://polymer.github.io/AUTHORS.txt
The complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt
Code distributed by Google as part of the polymer project is also
subject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt
-->

<style>

  body {
    margin: 0;
  }

</style>

<div hidden><!--
Copyright (c) 2014 The Polymer Project Authors. All rights reserved.
This code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt
The complete set of authors may be found at http://polymer.github.io/AUTHORS.txt
The complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt
Code distributed by Google as part of the polymer project is also
subject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt
-->

<!--
The `core-layout` element is a helper for using
[CSS3 Flexible Boxes](https://developer.mozilla.org/en-US/docs/Web/Guide/CSS/Flexible_boxes).
A `core-layout` element enables a set of css selectors for easy flexbox styling.

Example:

    <core-layout>
      <div>Left</div>
      <div core-flex>Main</div>
      <div>Right</div>
    </core-layout>

 Renders something like this:

    ---------------------------------
    |-------------------------------|
    ||Left|       Main       |Right||
    |-------------------------------|
    ---------------------------------

__Note__: the `core-layout` element applies layout to itself if it has children or to
its parent element, if it does not. This feature allows you to apply layout to an
arbitrary parent.

Elements can layout horizontally, such that their items stack
left to right or vertically, such that their items stack top to bottom. The
default is horizontal. Set `vertical` to true to layout the elements vertically.

To make a particular child _flexible_, use the `core-flex` attribute.
You can control flexibility from 1 to 3 by giving the attribute a
corresponding value. For other values, apply the css manually.

It's common in flexbox parlance to hear the terms _main axis_ and _cross axis_.
For a horizontal layout the main axis is horizontal and the cross axis is vertical.
These are exchanged for a vertical layout.

To effect alignment in the main axis, use the `justify` attribute. The 
supported values are `start`, `center`, `end`, and `between`.

To effect alignment in the cross axis, use the `align` attribute. The
supported values are `start`, `center`, and `end`.

Note, it's also possible to include the `core-layout.css` stylesheet separate
from the `core-layout` element. Including the element automatically includes
the stylesheet. To use the stylesheet independent of the element, css classes 
should be used of the following form: `core-h`, `core-v`, `core-flex`, 
`core-justify-start`, and `core-align-start`.

The `core-layout` and css file also provide a few commonly needed layout
behaviors. Apply the `core-fit` class to fit an element to its container. To 
ensure a container will contain an element inside it with the `core-fit` class
give it the `core-relative` class.

More examples:

    <core-layout vertical>

      <div>Header</div>
      <div core-flex>Body</div>
      <div>Footer</div>

    </core-layout>

    ----------
    ||------||
    ||Header||
    ||------||
    ||Body  ||
    ||      ||
    ||      ||
    ||      ||
    ||      ||
    ||      ||
    ||      ||
    ||------||
    ||Footer||
    ||------||
    ----------

Justify:

    <core-layout justify="end">
      <div core-flex>Left</div>
      <div>Main</div>
      <div>Right</div>
    </core-layout>

    ---------------------------------
    |-------------------------------|
    ||              Left|Main|Right||
    |-------------------------------|
    ---------------------------------

Align:

    <core-layout align="center">
      <div>Left</div>
      <div core-flex>Main</div>
      <div>Right</div>
    </core-layout>

    ---------------------------------
    |-------------------------------|
    ||    |                  |     ||
    ||Left|       Main       |Right||
    ||    |                  |     ||
    |-------------------------------|
    ---------------------------------


To layout contents of a parent element, place a `core-layout` inside of it:

    <some-element>
      <core-layout></core-layout>
      <div>Left</div>
      <div core-flex>Main</div>
      <div>Right</div>
    <some-element>

    ---------------------------------
    |-------------------------------|
    ||Left|       Main       |Right||
    |-------------------------------|
    ---------------------------------

You may also use the `core-layout` stylesheet directly:

    <link rel="stylesheet" href="../core-layout/core-layout.css">
    <div class="core-h core-justify-end">
      <div core-flex>Left</div>
      <div>Main</div>
      <div>Right</div>  
    </div>

    ---------------------------------
    |-------------------------------|
    ||              Left|Main|Right||
    |-------------------------------|
    ---------------------------------

@group Polymer Core Elements
@element core-layout

-->
<link rel="import" href="../polymer/polymer.html">

<polymer-element name="core-layout" attributes="vertical justify align isContainer reverse" assetpath="../core-layout/">
  
  <template>
  
    <style no-shim="">/*
Copyright 2013 The Polymer Authors. All rights reserved.
Use of this source code is governed by a BSD-style
license that can be found in the LICENSE file.
*/

.core-h, .core-v {
  display: -webkit-box !important;
  display: -ms-flexbox !important;
  display: -moz-flex !important;
  display: -webkit-flex !important;
  display: flex !important;
}

.core-h {
  -webkit-box-orient: horizontal;
  -ms-flex-direction: row;
  -moz-flex-direction: row;
  -webkit-flex-direction: row;
  flex-direction: row;
}

.core-h.core-reverse {
  -webkit-box-direction: reverse;
  -ms-flex-direction: row-reverse;
  -moz-flex-direction: row-reverse;
  -webkit-flex-direction: row-reverse;
  flex-direction: row-reverse;
}

.core-v {
  -webkit-box-orient: vertical;
  -ms-flex-direction: column;
  -moz-flex-direction: column;
  -webkit-flex-direction: column;
  flex-direction: column;
}

.core-v.core-reverse {
  -webkit-box-direction: reverse;
  -ms-flex-direction: column-reverse;
  -moz-flex-direction: column-reverse;
  -webkit-flex-direction: column-reverse;
  flex-direction: column-reverse;
}

.core-relative {
  position: relative;
}

.core-fit {
  position: absolute;
  top: 0;
  left: 0;
  height: 100%;
  width: 100%;
}

body.core-fit {
  margin: 0;
}

.core-flex, [core-flex] {
  -webkit-box-flex: 1;
  -ms-flex: 1;
  -moz-flex: 1;
  -webkit-flex: 1;
  flex: 1;
}

.core-flex-auto, [core-flex-auto] {
  -webkit-box-flex: 1;
  -ms-flex: 1 1 auto;
  -moz-flex: 1 1 auto;
  -webkit-flex: 1 1 auto;
  flex: 1 1 auto;
}

.core-flex-none, [core-flex-none] {
  -webkit-box-flex: none;
  -ms-flex: none;
  -moz-flex: none;
  -webkit-flex: none;
  flex: none;
}

.core-flex1, [core-flex=1] {
  -webkit-box-flex: 1;
  -ms-flex: 1;
  -moz-flex: 1;
  -webkit-flex: 1;
  flex: 1;
}

.core-flex2, [core-flex=2] {
  -webkit-box-flex: 2;
  -ms-flex: 2;
  -moz-flex: 2;
  -webkit-flex: 2;
  flex: 2;
}

.core-flex3, [core-flex=3] {
  -webkit-box-flex: 3;
  -ms-flex: 3;
  -moz-flex: 3;
  -webkit-flex: 3;
  flex: 3;
}

/* distributed elements */
::content > .core-flex, ::content > [core-flex] {
  -webkit-box-flex: 1;
  -ms-flex: 1;
  -moz-flex: 1;
  -webkit-flex: 1;
  flex: 1;
}

::content > .core-flex-auto, ::content > [core-flex-auto] {
  -webkit-box-flex: 1;
  -ms-flex: 1 1 auto;
  -moz-flex: 1 1 auto;
  -webkit-flex: 1 1 auto;
  flex: 1 1 auto;
}

::content > .core-flex-none, ::content > [core-flex-none] {
  -webkit-box-flex: none;
  -ms-flex: none;
  -moz-flex: none;
  -webkit-flex: none;
  flex: none;
}

::content > .core-flex1, ::content > [core-flex=1] {
  -webkit-box-flex: 1;
  -ms-flex: 1;
  -moz-flex: 1;
  -webkit-flex: 1;
  flex: 1;
}

::content > .core-flex2, ::content > [core-flex=2] {
  -webkit-box-flex: 2;
  -ms-flex: 2;
  -moz-flex: 2;
  -webkit-flex: 2;
  flex: 2;
}

::content > .core-flex3, ::content > [core-flex=3] {
  -webkit-box-flex: 3;
  -ms-flex: 3;
  -moz-flex: 3;
  -webkit-flex: 3;
  flex: 3;
}

/* alignment in main axis */
.core-justify-start {
  -webkit-box-pack: start;
  -ms-flex-pack: start;
  -moz-justify-content: flex-start;
  -webkit-justify-content: flex-start;
  justify-content: flex-start;
}

.core-justify-center {
  -webkit-box-pack: center;
  -ms-flex-pack: center;
  -moz-justify-content: center;
  -webkit-justify-content: center;
  justify-content: center;
}

.core-justify-end {
  -webkit-box-pack: end;
  -ms-flex-pack: end;
  -moz-justify-content: flex-end;
  -webkit-justify-content: flex-end;
  justify-content: flex-end;
}

.core-justify-between {
  -webkit-box-pack: justify;
  -ms-flex-pack: justify;
  -moz-justify-content: space-between;
  -webkit-justify-content: space-between;
  justify-content: space-between;
}

/* alignment in cross axis */
.core-align-start {
  -webkit-box-align: start;
  -ms-flex-align: start;
  -moz-align-items: flex-start;
  -webkit-align-items: flex-start;
  align-items: flex-start;
}

.core-align-center {
  -webkit-box-align: center;
  -ms-flex-align: center;
  -moz-align-items: center;
  -webkit-align-items: center;
  align-items: center;
}

.core-align-end {
  -webkit-box-align: end;
  -ms-flex-align: end;
  -moz-align-items: flex-end;
  -webkit-align-items: flex-end;
  align-items: flex-end;
}
</style>
    <style no-shim="">/*
Copyright (c) 2014 The Polymer Project Authors. All rights reserved.
This code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt
The complete set of authors may be found at http://polymer.github.io/AUTHORS.txt
The complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt
Code distributed by Google as part of the polymer project is also
subject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt
*/

:host {
  display: -webkit-box !important;
  display: -ms-flexbox !important;
  display: -moz-flex !important;
  display: -webkit-flex !important;
  display: flex !important;
}
  
:host(.core-h) {
  -webkit-box-orient: horizontal;
  -ms-flex-direction: row;
  -moz-flex-direction: row;
  -webkit-flex-direction: row;
  flex-direction: row;
}
  
:host(.core-v) {
  -webkit-box-orient: vertical;
  -ms-flex-direction: column;
  -moz-flex-direction: column;
  -webkit-flex-direction: column;
  flex-direction: column;
}

:host(.core-h.core-reverse) {
  -webkit-box-direction: reverse;
  -ms-flex-direction: row-reverse;
  -moz-flex-direction: row-reverse;
  -webkit-flex-direction: row-reverse;
  flex-direction: row-reverse;
}
  
:host(.core-v.core-reverse) {
  -webkit-box-direction: reverse;
  -ms-flex-direction: column-reverse;
  -moz-flex-direction: column-reverse;
  -webkit-flex-direction: column-reverse;
  flex-direction: column-reverse;
}

/* alignment in main axis */
:host(.core-justify-start) {
  -webkit-box-pack: start;
  -ms-flex-pack: start;
  -moz-justify-content: flex-start;
  -webkit-justify-content: flex-start;
  justify-content: flex-start;
}

:host(.core-justify-center) {
  -webkit-box-pack: center;
  -ms-flex-pack: center;
  -moz-justify-content: center;
  -webkit-justify-content: center;
  justify-content: center;
}

:host(.core-justify-end) {
  -webkit-box-pack: end;
  -ms-flex-pack: end;
  -moz-justify-content: flex-end;
  -webkit-justify-content: flex-end;
  justify-content: flex-end;
}

:host(.core-justify-between) {
  -webkit-box-pack: justify;
  -ms-flex-pack: justify;
  -moz-justify-content: space-between;
  -webkit-justify-content: space-between;
  justify-content: space-between;
}

/* alignment in cross axis */
:host(.core-align-start) {
  -webkit-box-align: start;
  -ms-flex-align: start;
  -moz-align-items: flex-start;
  -webkit-align-items: flex-start;
  align-items: flex-start;
}

:host(.core-align-center) {
  -webkit-box-align: center;
  -ms-flex-align: center;
  -moz-align-items: center;
  -webkit-align-items: center;
  align-items: center;
}
  
:host(.core-align-end) {
  -webkit-box-align: end;
  -ms-flex-align: end;
  -moz-align-items: flex-end;
  -webkit-align-items: flex-end;
  align-items: flex-end;
}
</style>
  
  </template>
  
  <script>
  
  (function() {
  
    Polymer('core-layout', {

      isContainer: false,
      /**
       * Controls if the element lays out vertically or not.
       *
       * @attribute vertical
       * @type boolean
       * @default false
       */
      vertical: false,
      /**
       * Controls how the items are aligned in the main-axis direction. For 
       * example for a horizontal layout, this controls how each item is aligned
       * horizontally.
       *
       * @attribute justify
       * @type string start|center|end|between
       * @default ''
       */
      justify: '',
      /**
       * Controls how the items are aligned in cross-axis direction. For 
       * example for a horizontal layout, this controls how each item is aligned
       * vertically.
       *
       * @attribute align
       * @type string start|center|end
       * @default ''
       */
      align: '',
      /**
       * Controls whether or not the items layout in reverse order.
       *
       * @attribute reverse
       * @type boolean
       * @default false
       */
      reverse: false,
      layoutPrefix: 'core-',
  
      // NOTE: include template so that styles are loaded, but remove
      // so that we can decide dynamically what part to include
      registerCallback: function(polymerElement) {
        var template = polymerElement.querySelector('template');
        this.styles = template.content.querySelectorAll('style').array();
        this.styles.forEach(function(s) {
          s.removeAttribute('no-shim');
        })
      },
  
      fetchTemplate: function() {
        return null;
      },
  
      attached: function() {
        this.installScopeStyle(this.styles[0]);
        if (this.children.length) {
          this.isContainer = true;
        }
        var container = this.isContainer ? this : this.parentNode;  
        // detect if laying out a shadowRoot host.
        var forHost = container instanceof ShadowRoot;
        if (forHost) {
          this.installScopeStyle(this.styles[1], 'host');
          container = container.host || document.body;
        }
        this.layoutContainer = container;
      },

      detached: function() {
        this.layoutContainer = null;
      },

      layoutContainerChanged: function(old) {
        this.style.display = this.layoutContainer === this ? null : 'none';
        this.verticalChanged();
        this.alignChanged();
        this.justifyChanged();
      },

      setLayoutClass: function(prefix, old, newValue) {
        if (this.layoutContainer) {
          prefix = this.layoutPrefix + prefix;
          if (old) {
            this.layoutContainer.classList.remove(prefix + old);
          }
          if (newValue) {
            this.layoutContainer.classList.add(prefix + newValue);
          }
        }
      },

      verticalChanged: function(old) {
        old = old ? 'v' : 'h';
        var vertical = this.vertical ? 'v' : 'h';
        this.setLayoutClass('', old, vertical);
      },

      alignChanged: function(old) {
        this.setLayoutClass('align-', old, this.align);
      },

      justifyChanged: function(old) {
        this.setLayoutClass('justify-', old, this.justify);
      },

      reverseChanged: function(old) {
        old = old ? 'reverse' : '';
        var newValue = this.reverse ? 'reverse' : '';
        this.setLayoutClass('', old, newValue);
      }

    });

  })();
  </script>

</polymer-element>
</div>
<div hidden>
<!--
Copyright (c) 2014 The Polymer Project Authors. All rights reserved.
This code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt
The complete set of authors may be found at http://polymer.github.io/AUTHORS.txt
The complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt
Code distributed by Google as part of the polymer project is also
subject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt
-->
<!--
Copyright (c) 2014 The Polymer Project Authors. All rights reserved.
This code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt
The complete set of authors may be found at http://polymer.github.io/AUTHORS.txt
The complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt
Code distributed by Google as part of the polymer project is also
subject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt
-->

<!--
Copyright (c) 2014 The Polymer Project Authors. All rights reserved.
This code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt
The complete set of authors may be found at http://polymer.github.io/AUTHORS.txt
The complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt
Code distributed by Google as part of the polymer project is also
subject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt
-->

<!--
/**
 * @group Polymer Core Elements
 *
 * The `core-iconset-svg` element allows users to define their own icon sets
 * that contain svg icons. The svg icon elements should be children of the
 * `core-iconset-svg` element. Multiple icons should be given distinct id's.
 *
 * Using svg elements to create icons has a few advantages over traditional
 * bitmap graphics like jpg or png. Icons that use svg are vector based so they
 * are resolution independent and should look good on any device. They are
 * stylable via css. Icons can be themed, colorized, and even animated.
 *
 * Example:
 *
 *     <core-iconset-svg id="my-svg-icons" iconSize="24">
 *       <svg>
 *         <defs>
 *           <g id="shape">
 *             <rect x="50" y="50" width="50" height="50" />
 *             <circle cx="50" cy="50" r="50" />
 *           </g>
 *         </defs>
 *       </svg>
 *     </core-iconset-svg>
 *
 * This will automatically register the icon set "my-svg-icons" to the iconset
 * database.  To use these icons from within another element, make a
 * `core-iconset` element and call the `byId` method
 * to retrieve a given iconset. To apply a particular icon inside an
 * element use the `applyIcon` method. For example:
 *
 *     iconset.applyIcon(iconNode, 'car');
 *
 * @element core-iconset-svg
 * @extends core-meta
 * @homepage github.io
 */
-->

<!--
Copyright (c) 2014 The Polymer Project Authors. All rights reserved.
This code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt
The complete set of authors may be found at http://polymer.github.io/AUTHORS.txt
The complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt
Code distributed by Google as part of the polymer project is also
subject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt
-->

<!--
/**
 * @group Polymer Core Elements
 *
 * The `core-iconset` element allows users to define their own icon sets. 
 * The `src` property specifies the url of the icon image. Multiple icons may
 * be included in this image and they may be organized into rows.
 * The `icons` property is a space separated list of names corresponding to the
 * icons. The names must be ordered as the icons are ordered in the icon image.
 * Icons are expected to be square and are the size specified by the `iconSize`
 * property. The `width` property corresponds to the width of the icon image 
 * and must be specified if icons are arranged into multiple rows in the image.
 *
 * All `core-iconset` elements are available for use by other `core-iconset`
 * elements via a database keyed by id. Typically, an element author that wants
 * to support a set of custom icons uses a `core-iconset` to retrieve 
 * and use another, user-defined iconset.
 *
 * Example:
 *
 *     <core-iconset id="my-icons" src="my-icons.png" width="96" iconSize="24"
 *         icons="location place starta stopb bus car train walk">
 *     </core-iconset>
 *
 * This will automatically register the icon set "my-icons" to the iconset
 * database.  To use these icons from within another element, make a 
 * `core-iconset` element and call the `byId` method to retrieve a
 * given iconset. To apply a particular icon to an element, use the 
 * `applyIcon` method. For example:
 *
 *     iconset.applyIcon(iconNode, 'car');
 *
 * Themed icon sets are also supported. The `core-iconset` can contain child
 * `property` elements that specify a theme with an offsetX and offsetY of the
 * theme within the icon resource. For example.
 *
 *     <core-iconset id="my-icons" src="my-icons.png" width="96" iconSize="24"
 *         icons="location place starta stopb bus car train walk">
 *       <property theme="special" offsetX="256" offsetY="24"></property>
 *     </core-iconset>
 *
 * Then a themed icon can be applied like this:
 *
 *     iconset.applyIcon(iconNode, 'car', 'special');
 *
 * @element core-iconset
 * @extends core-meta
 * @homepage github.io
 */
-->

<!--
Copyright (c) 2014 The Polymer Project Authors. All rights reserved.
This code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt
The complete set of authors may be found at http://polymer.github.io/AUTHORS.txt
The complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt
Code distributed by Google as part of the polymer project is also
subject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt
-->

<!--
`core-meta` provides a method of constructing a self-organizing database.
It is useful to collate element meta-data for things like catalogs and for 
designer.

Example, an element folder has a `metadata.html` file in it, that contains a 
`core-meta`, something like this:

    <core-meta id="my-element" label="My Element">
      <property name="color" value="blue"></property>
    </core-meta>

An application can import as many of these files as it wants, and then use 
`core-meta` again to access the collected data.

    <script>
      var meta = document.createElement('core-meta');
      console.log(meta.list); // dump a list of all meta-data elements that have been created
    </script>

Use `byId(id)` to retrive a specific core-meta.

    <script>
      var meta = document.createElement('core-meta');
      console.log(meta.byId('my-element'));
    </script>

By default all meta-data are stored in a single databse.  If your meta-data 
have different types and want them to be stored separately, use `type` to 
differentiate them.

Example:

    <core-meta id="x-foo" type="xElt"></core-meta>
    <core-meta id="x-bar" type="xElt"></core-meta>
    <core-meta id="y-bar" type="yElt"></core-meta>

    <script>
      var meta = document.createElement('core-meta');
      meta.type = 'xElt';
      console.log(meta.list);
    </script>

@group Polymer Core Elements
@element core-meta
@homepage github.io
-->



<polymer-element name="core-meta" attributes="list label type" hidden assetpath="../core-meta/">
<script>

  (function() {
    
    var SKIP_ID = 'meta';
    var metaData = {}, metaArray = {};

    Polymer('core-meta', {
      
      /**
       * The type of meta-data.  All meta-data with the same type with be
       * stored together.
       * 
       * @attribute type
       * @type string
       * @default 'default'
       */
      type: 'default',
      
      alwaysPrepare: true,
      
      ready: function() {
        this.register(this.id);
      },
      
      get metaArray() {
        var t = this.type;
        if (!metaArray[t]) {
          metaArray[t] = [];
        }
        return metaArray[t];
      },
      
      get metaData() {
        var t = this.type;
        if (!metaData[t]) {
          metaData[t] = {};
        }
        return metaData[t];
      },
      
      register: function(id, old) {
        if (id && id !== SKIP_ID) {
          this.unregister(this, old);
          this.metaData[id] = this;
          this.metaArray.push(this);
        }
      },
      
      unregister: function(meta, id) {
        delete this.metaData[id || meta.id];
        var i = this.metaArray.indexOf(meta);
        if (i >= 0) {
          this.metaArray.splice(i, 1);
        }
      },
      
      /**
       * Returns a list of all meta-data elements with the same type.
       * 
       * @attribute list
       * @type array
       * @default []
       */
      get list() {
        return this.metaArray;
      },
      
      /**
       * Retrieves meta-data by ID.
       *
       * @method byId
       * @param {String} id The ID of the meta-data to be returned.
       * @returns Returns meta-data.
       */
      byId: function(id) {
        return this.metaData[id];
      }
      
    });
    
  })();
  
</script>
</polymer-element>


<polymer-element name="core-iconset" extends="core-meta" attributes="src width icons iconSize" assetpath="../core-iconset/">
  
  <script>
  
    Polymer('core-iconset', {
  
      /**
       * The URL of the iconset image.
       *
       * @attribute src
       * @type string
       * @default ''
       */
      src: '',

      /**
       * The width of the iconset image. This must only be specified if the
       * icons are arranged into separate rows inside the image.
       *
       * @attribute width
       * @type number
       * @default 0
       */
      width: 0,

      /**
       * A space separated list of names corresponding to icons in the iconset
       * image file. This list must be ordered the same as the icon images
       * in the image file.
       *
       * @attribute icons
       * @type string
       * @default ''
       */
      icons: '',

      /**
       * The size of an individual icon. Note that icons must be square.
       *
       * @attribute iconSize
       * @type number
       * @default 24
       */
      iconSize: 24,

      /**
       * The horizontal offset of the icon images in the inconset src image.
       * This is typically used if the image resource contains additional images
       * beside those intended for the iconset.
       *
       * @attribute offsetX
       * @type number
       * @default 0
       */
      offsetX: 0,
      /**
       * The vertical offset of the icon images in the inconset src image.
       * This is typically used if the image resource contains additional images
       * beside those intended for the iconset.
       *
       * @attribute offsetY
       * @type number
       * @default 0
       */
      offsetY: 0,
      type: 'iconset',

      created: function() {
        this.iconMap = {};
        this.iconNames = [];
        this.themes = {};
      },
  
      ready: function() {
        // TODO(sorvell): ensure iconset's src is always relative to the main
        // document
        if (this.src && (this.ownerDocument !== document)) {
          this.src = this.resolvePath(this.src, this.ownerDocument.baseURI);
        }
        this.super();
        this.updateThemes();
      },

      iconsChanged: function() {
        var ox = this.offsetX;
        var oy = this.offsetY;
        this.icons && this.icons.split(/\s+/g).forEach(function(name, i) {
          this.iconNames.push(name);
          this.iconMap[name] = {
            offsetX: ox,
            offsetY: oy
          }
          if (ox + this.iconSize < this.width) {
            ox += this.iconSize;
          } else {
            ox = this.offsetX;
            oy += this.iconSize;
          }
        }, this);
      },

      updateThemes: function() {
        var ts = this.querySelectorAll('property[theme]');
        ts && ts.array().forEach(function(t) {
          this.themes[t.getAttribute('theme')] = {
            offsetX: parseInt(t.getAttribute('offsetX')) || 0,
            offsetY: parseInt(t.getAttribute('offsetY')) || 0
          };
        }, this);
      },

      // TODO(ffu): support retrived by index e.g. getOffset(10);
      /**
       * Returns an object containing `offsetX` and `offsetY` properties which
       * specify the pixel locaion in the iconset's src file for the given
       * `icon` and `theme`. It's uncommon to call this method. It is useful,
       * for example, to manually position a css backgroundImage to the proper
       * offset. It's more common to use the `applyIcon` method.
       *
       * @method getOffset
       * @param {String|Number} icon The name of the icon or the index of the
       * icon within in the icon image.
       * @param {String} theme The name of the theme.
       * @returns {Object} An object specifying the offset of the given icon 
       * within the icon resource file; `offsetX` is the horizontal offset and
       * `offsetY` is the vertical offset. Both values are in pixel units.
       */
      getOffset: function(icon, theme) {
        var i = this.iconMap[icon];
        if (!i) {
          var n = this.iconNames[Number(icon)];
          i = this.iconMap[n];
        }
        var t = this.themes[theme];
        if (i && t) {
          return {
            offsetX: i.offsetX + t.offsetX,
            offsetY: i.offsetY + t.offsetY
          }
        }
        return i;
      },

      /**
       * Applies an icon to the given element as a css background image. This
       * method does not size the element, and it's often necessary to set 
       * the element's height and width so that the background image is visible.
       *
       * @method applyIcon
       * @param {Element} element The element to which the background is
       * applied.
       * @param {String|Number} icon The name or index of the icon to apply.
       * @param {String} theme (optional) The name of the theme for the icon.
       * @param {Number} scale (optional, defaults to 1) A scaling factor 
       * with which the icon can be magnified.
       */
      applyIcon: function(element, icon, scale) {
         var offset = this.getOffset(icon);
         scale = scale || 1;
         if (element && offset) {
           var style = element.style;
           style.backgroundImage = 'url(' + this.src + ')';
           style.backgroundPosition = (-offset.offsetX * scale + 'px') + 
              ' ' + (-offset.offsetY * scale + 'px');
           style.backgroundSize = scale === 1 ? 'auto' :
              this.width * scale + 'px';
         }
      }

    });

  </script>

</polymer-element>


<polymer-element name="core-iconset-svg" extends="core-meta" attributes="iconSize" assetpath="../core-iconset-svg/">

  <script>

    Polymer('core-iconset-svg', {


      /**
       * The size of an individual icon. Note that icons must be square.
       *
       * @attribute iconSize
       * @type number
       * @default 24
       */
      iconSize: 24,
      type: 'iconset',

      created: function() {
        this._icons = {};
      },

      ready: function() {
        this.super();
        this.updateIcons();
      },

      iconById: function(id) {
        return this._icons[id] || (this._icons[id] = this.querySelector('#' + id));
      },

      cloneIcon: function(id) {
        var icon = this.iconById(id);
        if (icon) {
          var content = icon.cloneNode(true);
          var svg = document.createElementNS('http://www.w3.org/2000/svg', 'svg');
          svg.setAttribute('viewBox', '0 0 ' + this.iconSize + ' ' +
              this.iconSize);
          // NOTE(dfreedm): work around https://crbug.com/370136
          svg.style.pointerEvents = 'none';
          svg.appendChild(content);
          return svg;
        }
      },

      get iconNames() {
        if (!this._iconNames) {
          this._iconNames = this.findIconNames();
        }
        return this._iconNames;
      },

      findIconNames: function() {
        var icons = this.querySelectorAll('[id]').array();
        if (icons.length) {
          return icons.map(function(n){ return n.id });
        }
      },

      /**
       * Applies an icon to the given element. The svg icon is added to the
       * element's shadowRoot if one exists or directly to itself.
       *
       * @method applyIcon
       * @param {Element} element The element to which the icon is
       * applied.
       * @param {String|Number} icon The name the icon to apply.
       */
      applyIcon: function(element, icon, scale) {
        var root = element.shadowRoot || element;
        // remove old
        var old = root.querySelector('svg');
        if (old) {
          old.remove();
        }
        // install new
        var svg = this.cloneIcon(icon);
        if (!svg) {
          return;
        }
        var size = scale * this.iconSize;
        if (size) {
          svg.style.height = svg.style.width = size + 'px';
        } else {
          svg.setAttribute('height', '100%');
          svg.setAttribute('width', '100%');
          svg.setAttribute('preserveAspectRatio', 'xMidYMid meet');
        }
        svg.style.display = 'block';
        root.insertBefore(svg, root.firstElementChild);
      },
      
      /**
       * Tell users of the iconset, that the set has loaded.
       * This finds all elements matching the selector argument and calls 
       * the method argument on them.
       * @method updateIcons
       * @param selector {string} css selector to identify iconset users, 
       * defaults to '[icon]'
       * @param method {string} method to call on found elements, 
       * defaults to 'updateIcon'
       */
      updateIcons: function(selector, method) {
        selector = selector || '[icon]';
        method = method || 'updateIcon';
        var deep = window.ShadowDOMPolyfill ? '' : 'html /deep/ ';
        var i$ = document.querySelectorAll(deep + selector);
        for (var i=0, e; e=i$[i]; i++) {
          if (e[method]) {
            e[method].call(e);
          }
        }
      }
      

    });

  </script>

</polymer-element>

<core-iconset-svg id="icons" iconsize="24">
<svg><defs>
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<g id="warning"><path d="M1,21h22L12,2L1,21z M13,18h-2v-2h2V18z M13,14h-2v-4h2V14z"></path></g>
<g id="work"><path d="M20,6h-4V4l-2-2h-4L8,4v2H4C2.9,6,2,6.9,2,8l0,11c0,1.1,0.9,2,2,2h16c1.1,0,2-0.9,2-2V8C22,6.9,21.1,6,20,6z M14,6h-4V4h4V6z"></path></g>
</defs></svg>
</core-iconset-svg>

<!-- import core-icon for convenience 
  TODO(sorvell): we'd rather do this in core-iconset but we can't until
  crbug.com/373461 is addressed
-->
<!--
Copyright (c) 2014 The Polymer Project Authors. All rights reserved.
This code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt
The complete set of authors may be found at http://polymer.github.io/AUTHORS.txt
The complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt
Code distributed by Google as part of the polymer project is also
subject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt
-->
<!--

The `core-icon` element displays an icon using CSS background image. By default an icon renders as 24px square.

Example using src:

    <core-icon src="star.png"></core-icon>

Example setting size to 32px x 32px:

    <core-icon src="big_star.png" size="32"></core-icon>

Example using icon from default iconset:

    <core-icon icon="menu"></core-icon>

Example using icon `cherry` from custom iconset `fruit`:

    <core-icon icon="fruit:cherry"></core-icon>

See [core-iconset](#core-iconset) and [core-iconset-svg](#core-iconset-svg) for more information about
how to use a custom iconset.

See [core-icons](#core-icons) for the default set of icons. To use the default set of icons you'll need to include an import for `core-icons.html`.

@group Polymer Core Elements
@element core-icon
@homepage polymer.github.io
-->


<style shim-shadowdom="">/* Copyright (c) 2014 The Polymer Project Authors. All rights reserved.
This code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt
The complete set of authors may be found at http://polymer.github.io/AUTHORS.txt
The complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt
Code distributed by Google as part of the polymer project is also
subject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt */

html /deep/ core-icon {
  display: inline-block;
  vertical-align: middle;
  background-repeat: no-repeat;
}

html /deep/ core-icon[size=""] {
  position: relative;
}

html /deep/ core-icon[size=""] > svg {
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
}
</style>

<polymer-element name="core-icon" attributes="src size icon" assetpath="../core-icon/">
<script>
(function() {
  
  // mono-state
  var meta;
  
  Polymer('core-icon', {

    /**
     * The URL of an image for the icon. If the src property is specified,
     * the icon property should not be.
     *
     * @attribute src
     * @type string
     * @default ''
     */
    src: '',

    /**
     * Specifies the size of the icon in pixel units.
     *
     * @attribute size
     * @type string
     * @default 24
     */
    size: 24,

    /**
     * Specifies the icon name or index in the set of icons available in
     * the icon's icon set. If the icon property is specified,
     * the src property should not be.
     *
     * @attribute icon
     * @type string
     * @default ''
     */
    icon: '',

    observe: {
      'size icon': 'updateIcon'
    },

    defaultIconset: 'icons',

    ready: function() {
      if (!meta) {
        meta = document.createElement('core-iconset');
      }
      this.updateIcon();
    },

    srcChanged: function() {
      this.style.backgroundImage = 'url(' + this.src + ')';
      this.style.backgroundPosition = 'center';
      this.style.backgroundSize = this.size + 'px ' + this.size + 'px';
    },

    getIconset: function(name) {
      return meta.byId(name || this.defaultIconset);
    },

    updateIcon: function() {
      if (this.size) {
        this.style.width = this.style.height = this.size + 'px';
      }
      if (this.icon) {
        var parts = String(this.icon).split(':');
        var icon = parts.pop();
        if (icon) {
          var set = this.getIconset(parts.pop());
          if (set) {
            set.applyIcon(this, icon, this.size / set.iconSize);
          }
        }
      }
    }

  });
  
})();
</script>

</polymer-element>


<!--
Copyright (c) 2014 The Polymer Project Authors. All rights reserved.
This code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt
The complete set of authors may be found at http://polymer.github.io/AUTHORS.txt
The complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt
Code distributed by Google as part of the polymer project is also
subject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt
-->

<!--
`core-icon-button` is an icon with button behaviors.

    <core-icon-button src="star.png"></core-icon-button>

`core-icon-button` includes a default icon set.  Use `icon` to specify 
which icon from the icon set to use.

    <core-icon-button icon="menu"></core-icon-button>

See [`core-iconset`](#core-iconset) for more information about 
how to use a custom icon set.

@group Polymer Core Elements
@element core-icon-button
@homepage github.io
-->




<polymer-element name="core-icon-button" attributes="src icon active" assetpath="../core-icon-button/">

  <template>

    <style>/*
Copyright (c) 2014 The Polymer Project Authors. All rights reserved.
This code may only be used under the BSD style license found at http://polymer.github.io/LICENSE
The complete set of authors may be found at http://polymer.github.io/AUTHORS
The complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS
Code distributed by Google as part of the polymer project is also
subject to an additional IP rights grant found at http://polymer.github.io/PATENTS
*/

:host {
  display: inline-block;
  box-sizing: border-box;
  -moz-box-sizing: border-box;
  width: 38px;
  height: 38px;
  background-image: none;
  border-radius: 2px;
  padding: 7px;
  margin: 2px;
  vertical-align: middle;
  font-size: 1rem;
  cursor: pointer;
}

:host([disabled]) {
  opacity: 0.6;
  pointer-events: none;
}

:host(.outline) {
  box-shadow: 0 0 0 1px rgba(0, 0, 0, 0.1);
}

:host(:hover:not([disabled])) {
  box-shadow: 0 1px 0 0 rgba(0, 0, 0, 0.12), 0 0 0 1px rgba(0, 0, 0, 0.1);
}

:host(.selected:not([disabled])) {
  background-color: rgba(0, 0, 0, 0.05);
  box-shadow: inset 0 1px 0 0 rgba(0, 0, 0, 0.05), 0 0 0 1px rgba(0, 0, 0, 0.12);
}

:host(:active:not([disabled]), .selected:active:not([disabled])) {
  background-color: rgba(0, 0, 0, 0.05);
  box-shadow: inset 0 1px 0 0 rgba(0, 0, 0, 0.1), 0 0 0 1px rgba(0, 0, 0, 0.12);
}

:host(.core-dark-theme.outline) {
  background-color: rgba(200, 200, 200, 0.05);
  box-shadow: 0 0 0 1px rgba(200, 200, 200, 0.1);
}

:host(.core-dark-theme:hover) {
  background-color: rgba(200, 200, 200, 0.05);
  box-shadow: 0 1px 0 0 rgba(200, 200, 200, 0.12), 0 0 0 1px rgba(200, 200, 200, 0.1);
}

:host(.core-dark-theme.selected) {
  background-color: rgba(220, 220, 220, 0.05);
  box-shadow: inset 0 1px 0 0 rgba(200, 200, 200, 0.05), 0 0 0 1px rgba(200, 200, 200, 0.12);
}

:host(.core-dark-theme:active, .core-dark-theme.selected:active) {
  background-color: rgba(200, 200, 200, 0.05);
  box-shadow: inset 0 1px 0 0 rgba(200, 200, 200, 0.1), 0 0 0 1px rgba(200, 200, 200, 0.12);
}

core-icon {
  pointer-events: none;
}
</style>

    <core-icon src="{{src}}" icon="{{icon}}"><content></content></core-icon>

  </template>

  <script>

    Polymer('core-icon-button', {

      /**
       * The URL of an image for the icon.  Should not use `icon` property
       * if you are using this property.
       *
       * @attribute src
       * @type string
       * @default ''
       */
      src: '',

      /**
       * If true, border is placed around the button to indicate it's
       * active state.
       *
       * @attribute active
       * @type boolean
       * @default false
       */
      active: false,

      /**
       * Specifies the icon name or index in the set of icons available in
       * the icon set.  Should not use `src` property if you are using this
       * property.
       *
       * @attribute icon
       * @type string
       * @default ''
       */
      icon: '',

      activeChanged: function() {
        this.classList.toggle('selected', this.active);
      }

    });

  </script>

</polymer-element>

<!--
Copyright (c) 2014 The Polymer Project Authors. All rights reserved.
This code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt
The complete set of authors may be found at http://polymer.github.io/AUTHORS.txt
The complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt
Code distributed by Google as part of the polymer project is also
subject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt
-->

<!--
`core-toolbar` is a horizontal bar containing elements that can be used for
label, navigation, search and actions.

    <core-toolbar>
      <core-icon-button icon="menu" on-tap="{{menuAction}}"></core-icon-button>
      <div flex>Title</div>
      <core-icon-button icon="more" on-tap="{{moreAction}}"></core-icon-button>
    </core-toolbar>

`core-toolbar` has a standard height, but can made be taller by setting `tall`
class on the `core-toolbar`.  This will make the toolbar 3x the normal height.

    <core-toolbar class="tall">
      <core-icon-button icon="menu"></core-icon-button>
    </core-toolbar>
    
Apply `medium-tall` class to make the toolbar medium tall.  This will make the 
toolbar 2x the normal height.

    <core-toolbar class="medium-tall">
      <core-icon-button icon="menu"></core-icon-button>
    </core-toolbar>

When taller, elements can pin to either the top (default), middle or bottom.

    <core-toolbar class="tall">
      <core-icon-button icon="menu"></core-icon-button>
      <div class="middle indent">Middle Title</div>
      <div class="bottom indent">Bottom Title</div>
    </core-toolbar>
    
To make an element completely fit at the bottom of the toolbar, use `fit` along
with `bottom`.

    <core-toolbar class="tall">
      <div id="progressBar" class="bottom fit"></div>
    </core-toolbar>

@group Polymer Core Elements
@element core-toolbar
@homepage github.io
-->



<polymer-element name="core-toolbar" noscript="" assetpath="../core-toolbar/">
<template>

  <style>/*
Copyright (c) 2014 The Polymer Project Authors. All rights reserved.
This code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt
The complete set of authors may be found at http://polymer.github.io/AUTHORS.txt
The complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt
Code distributed by Google as part of the polymer project is also
subject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt
*/

:host {
  /* technical */
  display: block;
  position: relative;
  box-sizing: border-box;
  -moz-box-sizing: border-box;
  /* size */
  height: 64px;
  /* typography */
  font-size: 1.3em;
  /* background */
  background-color: #CFD8DC;
}

:host(.animate) {
  /* transition */
  transition: height 0.18s ease-in;
}

:host(.medium-tall) {
  height: 128px;
}

:host(.tall) {
  height: 192px;
}

.toolbar-tools {
  height: 64px;
  padding: 0 8px;
  pointer-events: none;
}

/* narrow layout */
:host(.narrow) {
  height: 56px;
}

:host(.narrow.medium-tall) {
  height: 112px;
}

:host(.narrow.tall) {
  height: 168px;
}

:host(.narrow) .toolbar-tools {
  height: 56px;
  padding: 0;
}

/* middle bar */
#middleBar {
  position: absolute;
  top: 0;
  right: 0;
  left: 0;
}

:host(.tall, .medium-tall) #middleBar {
  -webkit-transform: translateY(100%);
  transform: translateY(100%);
}

/* bottom bar */
#bottomBar {
  position: absolute;
  right: 0;
  bottom: 0;
  left: 0;
}

/* shows bottom bar only when in normal height (!tall && !medium-tall) */
:host(.animate.no-overlap) > #topBar, 
:host(.animate.no-overlap) > #middleBar {
  transition: -webkit-transform 0.18s ease-in;
  transition: transform 0.18s ease-in;
}

:host(.no-overlap:not(.medium-tall):not(.tall)) > #topBar {
  -webkit-transform: translateY(-100%);
  transform: translateY(-100%);
}

:host(.no-overlap:not(.medium-tall):not(.tall)) > #middleBar {
  -webkit-transform: translateY(-200%);
  transform: translateY(-200%);
}

/* make elements (e.g. buttons) respond to mouse/touch events */
polyfill-next-selector { content: '.toolbar-tools > *'; }
::content > * {
  pointer-events: auto;
}

/* elements spacing */
polyfill-next-selector { content: '.toolbar-tools > *'; }
::content > * {
  margin: 0px 8px;
}

/* misc helpers */
polyfill-next-selector { content: '.toolbar-tools > .fit'; }
::content > .fit {
  position: absolute;
  top: auto;
  right: 0;
  bottom: 0;
  left: 0;
  width: auto;
  margin: 0;
}

polyfill-next-selector { content: ':host .indent'; }
::content > .indent {
  margin-left: 60px;
}
</style>

  <div id="bottomBar" class="toolbar-tools" center="" horizontal="" layout="">
    <content select=".bottom"></content>
  </div>
  
  <div id="middleBar" class="toolbar-tools" center="" horizontal="" layout="">
    <content select=".middle"></content>
  </div>

  <div id="topBar" class="toolbar-tools" center="" horizontal="" layout="">
    <content></content>
  </div>

</template>
</polymer-element>

<!--
Copyright (c) 2014 The Polymer Project Authors. All rights reserved.
This code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt
The complete set of authors may be found at http://polymer.github.io/AUTHORS.txt
The complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt
Code distributed by Google as part of the polymer project is also
subject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt
-->

<!--
`core-header-panel` contains a header section and a content panel section.

__Important:__ The `core-header-panel` will not display if its parent does not have a height.

Using [layout attributes](http://www.polymer-project.org/docs/polymer/layout-attrs.html), you can easily make the `core-header-panel` fill the screen

    <body fullbleed layout vertical>
      <core-header-panel flex>
        <core-toolbar>
          <div>Hello World!</div>
        </core-toolbar>
      </core-header-panel>
    </body>

or, if you would prefer to do it in CSS, just give `html`, `body`, and `core-header-panel` a height of 100%:

    html, body {
      height: 100%;
      margin: 0;
    }
    core-header-panel {
      height: 100%;
    }

Special
support is provided for scrolling modes when one uses a core-toolbar or equivalent
for the header section.

Example:

    <core-header-panel>
      <core-toolbar>Header</core-toolbar>
      <div>Content goes here...</div>
    </core-header-panel>

If you want to use other than `core-toolbar` for the header, add 
`core-header` class to that element.

Example:

    <core-header-panel>
      <div class="core-header">Header</div>
      <div>Content goes here...</div>
    </core-header-panel>

Use `mode` to control the header and scrolling behavior.

@group Polymer Core Elements
@element core-header-panel
@homepage github.io
-->



<polymer-element name="core-header-panel" assetpath="../core-header-panel/">
<template>

  <style>/*
Copyright (c) 2014 The Polymer Project Authors. All rights reserved.
This code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt
The complete set of authors may be found at http://polymer.github.io/AUTHORS.txt
The complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt
Code distributed by Google as part of the polymer project is also
subject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt
*/

:host {
  display: block;
  position: relative;
}

#outerContainer {
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
  overflow-y: auto;
  overflow-x: hidden;
  -webkit-overflow-scrolling: touch;
}

#mainPanel {
  position: relative;
}

#mainContainer {
  position: relative;
  overflow-y: auto;
  overflow-x: hidden;
  -webkit-overflow-scrolling: touch;
}

#dropShadow {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 6px;
  box-shadow: inset 0px 5px 6px -3px rgba(0, 0, 0, 0.4);
}

#dropShadow.hidden {
  display: none;
}

/* 
mode: scroll 
*/
:host([mode=scroll]) #mainContainer {
  overflow: visible;
}

/*
mode: cover
*/
:host([mode=cover]) #mainPanel {
  position: static;
}

:host([mode=cover]) #mainContainer {
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
}

:host([mode=cover]) #dropShadow {
  position: static;
  width: 100%;
}
</style>
  
  <div id="outerContainer" on-scroll="{{scroll}}" vertical="" layout="">

    <content id="headerContent" select="core-toolbar, .core-header"></content>

    <div id="mainPanel" flex="" vertical="" layout="">
    
      <div id="mainContainer" flex?="{{mode !== &apos;cover&apos;}}" on-scroll="{{scroll}}">
        <content id="mainContent" select="*"></content>
      </div>
      
      <div id="dropShadow"></div>
      
    </div>

  </div>

</template>
<script>

  Polymer('core-header-panel', {

    publish: {
      /**
       * Controls header and scrolling behavior. Options are
       * `standard`, `seamed`, `waterfall`, `waterfall-tall`, 
       * `waterfall-medium-tall`, `scroll` and `cover`.
       * Default is `standard`.
       *
       * `standard`: The header is a step above the panel. The header will consume the 
       * panel at the point of entry, preventing it from passing through to the 
       * opposite side.
       *
       * `seamed`: The header is presented as seamed with the panel.
       *
       * `waterfall`: Similar to standard mode, but header is initially presented as 
       * seamed with panel, but then separates to form the step.
       *
       * `waterfall-tall`: The header is initially taller (`tall` class is added to 
       * the header).  As the user scrolls, the header separates (forming an edge)
       * while condensing (`tall` class is removed from the header).
       *
       * `scroll`: The header keeps its seam with the panel, and is pushed off screen.
       *
       * `cover`: The panel covers the whole `core-header-panel` including the
       * header. This allows user to style the panel in such a way that the panel is
       * partially covering the header.
       *
       *     <style>
       *       core-header-panel[mode=cover]::shadow #mainContainer {
       *         left: 80px;
       *       }
       *       .content {
       *         margin: 60px 60px 60px 0;
       *       }
       *     </style>
       * 
       *     <core-header-panel mode="cover">
       *       <core-appbar class="tall">
       *         <core-icon-button icon="menu"></core-icon-button>
       *       </core-appbar>
       *       <div class="content"></div>
       *     </core-header-panel>
       *
       * @attribute mode
       * @type string
       * @default ''
       */
      mode: {value: '', reflect: true},
      
      /**
       * The class used in waterfall-tall mode.  Change this if the header
       * accepts a different class for toggling height, e.g. "medium-tall"
       *
       * @attribute tallClass
       * @type string
       * @default 'tall'
       */
      tallClass: 'tall',
      
      /**
       * If true, the drop-shadow is always shown no matter what mode is set to.
       *
       * @attribute shadow
       * @type boolean
       * @default false
       */
      shadow: false,
    },
    
    domReady: function() {
      this.async('scroll');
    },

    modeChanged: function() {
      this.scroll();
    },

    get header() {
      return this.$.headerContent.getDistributedNodes()[0];
    },
    
    scroll: function() {
      var shadowMode = {'waterfall': 1, 'waterfall-tall': 1};
      var noShadow = {'seamed': 1, 'cover': 1, 'scroll': 1};
      var tallMode = {'waterfall-tall': 1};
      
      var main = this.$.mainContainer;
      var header = this.header;
      
      var sTop = main.scrollTop;
      var atTop = sTop === 0;
      
      if (header) {
        this.$.dropShadow.classList.toggle('hidden', !this.shadow &&
            (atTop && shadowMode[this.mode] || noShadow[this.mode]));
        
        if (tallMode[this.mode]) {
          header.classList.toggle(this.tallClass, atTop);
        }
        
        header.classList.toggle('animate', tallMode[this.mode]);
      }
    }

  });

</script>
</polymer-element>

<!--
Copyright (c) 2014 The Polymer Project Authors. All rights reserved.
This code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt
The complete set of authors may be found at http://polymer.github.io/AUTHORS.txt
The complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt
Code distributed by Google as part of the polymer project is also
subject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt
-->


<script>/**
 * marked - a markdown parser
 * Copyright (c) 2011-2014, Christopher Jeffrey. (MIT Licensed)
 * https://github.com/chjj/marked
 */

;(function() {

/**
 * Block-Level Grammar
 */

var block = {
  newline: /^\n+/,
  code: /^( {4}[^\n]+\n*)+/,
  fences: noop,
  hr: /^( *[-*_]){3,} *(?:\n+|$)/,
  heading: /^ *(#{1,6}) *([^\n]+?) *#* *(?:\n+|$)/,
  nptable: noop,
  lheading: /^([^\n]+)\n *(=|-){2,} *(?:\n+|$)/,
  blockquote: /^( *>[^\n]+(\n(?!def)[^\n]+)*\n*)+/,
  list: /^( *)(bull) [\s\S]+?(?:hr|def|\n{2,}(?! )(?!\1bull )\n*|\s*$)/,
  html: /^ *(?:comment|closed|closing) *(?:\n{2,}|\s*$)/,
  def: /^ *\[([^\]]+)\]: *<?([^\s>]+)>?(?: +["(]([^\n]+)[")])? *(?:\n+|$)/,
  table: noop,
  paragraph: /^((?:[^\n]+\n?(?!hr|heading|lheading|blockquote|tag|def))+)\n*/,
  text: /^[^\n]+/
};

block.bullet = /(?:[*+-]|\d+\.)/;
block.item = /^( *)(bull) [^\n]*(?:\n(?!\1bull )[^\n]*)*/;
block.item = replace(block.item, 'gm')
  (/bull/g, block.bullet)
  ();

block.list = replace(block.list)
  (/bull/g, block.bullet)
  ('hr', '\\n+(?=\\1?(?:[-*_] *){3,}(?:\\n+|$))')
  ('def', '\\n+(?=' + block.def.source + ')')
  ();

block.blockquote = replace(block.blockquote)
  ('def', block.def)
  ();

block._tag = '(?!(?:'
  + 'a|em|strong|small|s|cite|q|dfn|abbr|data|time|code'
  + '|var|samp|kbd|sub|sup|i|b|u|mark|ruby|rt|rp|bdi|bdo'
  + '|span|br|wbr|ins|del|img)\\b)\\w+(?!:/|[^\\w\\s@]*@)\\b';

block.html = replace(block.html)
  ('comment', /<!--[\s\S]*?-->/)
  ('closed', /<(tag)[\s\S]+?<\/\1>/)
  ('closing', /<tag(?:"[^"]*"|'[^']*'|[^'">])*?>/)
  (/tag/g, block._tag)
  ();

block.paragraph = replace(block.paragraph)
  ('hr', block.hr)
  ('heading', block.heading)
  ('lheading', block.lheading)
  ('blockquote', block.blockquote)
  ('tag', '<' + block._tag)
  ('def', block.def)
  ();

/**
 * Normal Block Grammar
 */

block.normal = merge({}, block);

/**
 * GFM Block Grammar
 */

block.gfm = merge({}, block.normal, {
  fences: /^ *(`{3,}|~{3,}) *(\S+)? *\n([\s\S]+?)\s*\1 *(?:\n+|$)/,
  paragraph: /^/
});

block.gfm.paragraph = replace(block.paragraph)
  ('(?!', '(?!'
    + block.gfm.fences.source.replace('\\1', '\\2') + '|'
    + block.list.source.replace('\\1', '\\3') + '|')
  ();

/**
 * GFM + Tables Block Grammar
 */

block.tables = merge({}, block.gfm, {
  nptable: /^ *(\S.*\|.*)\n *([-:]+ *\|[-| :]*)\n((?:.*\|.*(?:\n|$))*)\n*/,
  table: /^ *\|(.+)\n *\|( *[-:]+[-| :]*)\n((?: *\|.*(?:\n|$))*)\n*/
});

/**
 * Block Lexer
 */

function Lexer(options) {
  this.tokens = [];
  this.tokens.links = {};
  this.options = options || marked.defaults;
  this.rules = block.normal;

  if (this.options.gfm) {
    if (this.options.tables) {
      this.rules = block.tables;
    } else {
      this.rules = block.gfm;
    }
  }
}

/**
 * Expose Block Rules
 */

Lexer.rules = block;

/**
 * Static Lex Method
 */

Lexer.lex = function(src, options) {
  var lexer = new Lexer(options);
  return lexer.lex(src);
};

/**
 * Preprocessing
 */

Lexer.prototype.lex = function(src) {
  src = src
    .replace(/\r\n|\r/g, '\n')
    .replace(/\t/g, '    ')
    .replace(/\u00a0/g, ' ')
    .replace(/\u2424/g, '\n');

  return this.token(src, true);
};

/**
 * Lexing
 */

Lexer.prototype.token = function(src, top, bq) {
  var src = src.replace(/^ +$/gm, '')
    , next
    , loose
    , cap
    , bull
    , b
    , item
    , space
    , i
    , l;

  while (src) {
    // newline
    if (cap = this.rules.newline.exec(src)) {
      src = src.substring(cap[0].length);
      if (cap[0].length > 1) {
        this.tokens.push({
          type: 'space'
        });
      }
    }

    // code
    if (cap = this.rules.code.exec(src)) {
      src = src.substring(cap[0].length);
      cap = cap[0].replace(/^ {4}/gm, '');
      this.tokens.push({
        type: 'code',
        text: !this.options.pedantic
          ? cap.replace(/\n+$/, '')
          : cap
      });
      continue;
    }

    // fences (gfm)
    if (cap = this.rules.fences.exec(src)) {
      src = src.substring(cap[0].length);
      this.tokens.push({
        type: 'code',
        lang: cap[2],
        text: cap[3]
      });
      continue;
    }

    // heading
    if (cap = this.rules.heading.exec(src)) {
      src = src.substring(cap[0].length);
      this.tokens.push({
        type: 'heading',
        depth: cap[1].length,
        text: cap[2]
      });
      continue;
    }

    // table no leading pipe (gfm)
    if (top && (cap = this.rules.nptable.exec(src))) {
      src = src.substring(cap[0].length);

      item = {
        type: 'table',
        header: cap[1].replace(/^ *| *\| *$/g, '').split(/ *\| */),
        align: cap[2].replace(/^ *|\| *$/g, '').split(/ *\| */),
        cells: cap[3].replace(/\n$/, '').split('\n')
      };

      for (i = 0; i < item.align.length; i++) {
        if (/^ *-+: *$/.test(item.align[i])) {
          item.align[i] = 'right';
        } else if (/^ *:-+: *$/.test(item.align[i])) {
          item.align[i] = 'center';
        } else if (/^ *:-+ *$/.test(item.align[i])) {
          item.align[i] = 'left';
        } else {
          item.align[i] = null;
        }
      }

      for (i = 0; i < item.cells.length; i++) {
        item.cells[i] = item.cells[i].split(/ *\| */);
      }

      this.tokens.push(item);

      continue;
    }

    // lheading
    if (cap = this.rules.lheading.exec(src)) {
      src = src.substring(cap[0].length);
      this.tokens.push({
        type: 'heading',
        depth: cap[2] === '=' ? 1 : 2,
        text: cap[1]
      });
      continue;
    }

    // hr
    if (cap = this.rules.hr.exec(src)) {
      src = src.substring(cap[0].length);
      this.tokens.push({
        type: 'hr'
      });
      continue;
    }

    // blockquote
    if (cap = this.rules.blockquote.exec(src)) {
      src = src.substring(cap[0].length);

      this.tokens.push({
        type: 'blockquote_start'
      });

      cap = cap[0].replace(/^ *> ?/gm, '');

      // Pass `top` to keep the current
      // "toplevel" state. This is exactly
      // how markdown.pl works.
      this.token(cap, top, true);

      this.tokens.push({
        type: 'blockquote_end'
      });

      continue;
    }

    // list
    if (cap = this.rules.list.exec(src)) {
      src = src.substring(cap[0].length);
      bull = cap[2];

      this.tokens.push({
        type: 'list_start',
        ordered: bull.length > 1
      });

      // Get each top-level item.
      cap = cap[0].match(this.rules.item);

      next = false;
      l = cap.length;
      i = 0;

      for (; i < l; i++) {
        item = cap[i];

        // Remove the list item's bullet
        // so it is seen as the next token.
        space = item.length;
        item = item.replace(/^ *([*+-]|\d+\.) +/, '');

        // Outdent whatever the
        // list item contains. Hacky.
        if (~item.indexOf('\n ')) {
          space -= item.length;
          item = !this.options.pedantic
            ? item.replace(new RegExp('^ {1,' + space + '}', 'gm'), '')
            : item.replace(/^ {1,4}/gm, '');
        }

        // Determine whether the next list item belongs here.
        // Backpedal if it does not belong in this list.
        if (this.options.smartLists && i !== l - 1) {
          b = block.bullet.exec(cap[i + 1])[0];
          if (bull !== b && !(bull.length > 1 && b.length > 1)) {
            src = cap.slice(i + 1).join('\n') + src;
            i = l - 1;
          }
        }

        // Determine whether item is loose or not.
        // Use: /(^|\n)(?! )[^\n]+\n\n(?!\s*$)/
        // for discount behavior.
        loose = next || /\n\n(?!\s*$)/.test(item);
        if (i !== l - 1) {
          next = item.charAt(item.length - 1) === '\n';
          if (!loose) loose = next;
        }

        this.tokens.push({
          type: loose
            ? 'loose_item_start'
            : 'list_item_start'
        });

        // Recurse.
        this.token(item, false, bq);

        this.tokens.push({
          type: 'list_item_end'
        });
      }

      this.tokens.push({
        type: 'list_end'
      });

      continue;
    }

    // html
    if (cap = this.rules.html.exec(src)) {
      src = src.substring(cap[0].length);
      this.tokens.push({
        type: this.options.sanitize
          ? 'paragraph'
          : 'html',
        pre: cap[1] === 'pre' || cap[1] === 'script' || cap[1] === 'style',
        text: cap[0]
      });
      continue;
    }

    // def
    if ((!bq && top) && (cap = this.rules.def.exec(src))) {
      src = src.substring(cap[0].length);
      this.tokens.links[cap[1].toLowerCase()] = {
        href: cap[2],
        title: cap[3]
      };
      continue;
    }

    // table (gfm)
    if (top && (cap = this.rules.table.exec(src))) {
      src = src.substring(cap[0].length);

      item = {
        type: 'table',
        header: cap[1].replace(/^ *| *\| *$/g, '').split(/ *\| */),
        align: cap[2].replace(/^ *|\| *$/g, '').split(/ *\| */),
        cells: cap[3].replace(/(?: *\| *)?\n$/, '').split('\n')
      };

      for (i = 0; i < item.align.length; i++) {
        if (/^ *-+: *$/.test(item.align[i])) {
          item.align[i] = 'right';
        } else if (/^ *:-+: *$/.test(item.align[i])) {
          item.align[i] = 'center';
        } else if (/^ *:-+ *$/.test(item.align[i])) {
          item.align[i] = 'left';
        } else {
          item.align[i] = null;
        }
      }

      for (i = 0; i < item.cells.length; i++) {
        item.cells[i] = item.cells[i]
          .replace(/^ *\| *| *\| *$/g, '')
          .split(/ *\| */);
      }

      this.tokens.push(item);

      continue;
    }

    // top-level paragraph
    if (top && (cap = this.rules.paragraph.exec(src))) {
      src = src.substring(cap[0].length);
      this.tokens.push({
        type: 'paragraph',
        text: cap[1].charAt(cap[1].length - 1) === '\n'
          ? cap[1].slice(0, -1)
          : cap[1]
      });
      continue;
    }

    // text
    if (cap = this.rules.text.exec(src)) {
      // Top-level should never reach here.
      src = src.substring(cap[0].length);
      this.tokens.push({
        type: 'text',
        text: cap[0]
      });
      continue;
    }

    if (src) {
      throw new
        Error('Infinite loop on byte: ' + src.charCodeAt(0));
    }
  }

  return this.tokens;
};

/**
 * Inline-Level Grammar
 */

var inline = {
  escape: /^\\([\\`*{}\[\]()#+\-.!_>])/,
  autolink: /^<([^ >]+(@|:\/)[^ >]+)>/,
  url: noop,
  tag: /^<!--[\s\S]*?-->|^<\/?\w+(?:"[^"]*"|'[^']*'|[^'">])*?>/,
  link: /^!?\[(inside)\]\(href\)/,
  reflink: /^!?\[(inside)\]\s*\[([^\]]*)\]/,
  nolink: /^!?\[((?:\[[^\]]*\]|[^\[\]])*)\]/,
  strong: /^__([\s\S]+?)__(?!_)|^\*\*([\s\S]+?)\*\*(?!\*)/,
  em: /^\b_((?:__|[\s\S])+?)_\b|^\*((?:\*\*|[\s\S])+?)\*(?!\*)/,
  code: /^(`+)\s*([\s\S]*?[^`])\s*\1(?!`)/,
  br: /^ {2,}\n(?!\s*$)/,
  del: noop,
  text: /^[\s\S]+?(?=[\\<!\[_*`]| {2,}\n|$)/
};

inline._inside = /(?:\[[^\]]*\]|[^\[\]]|\](?=[^\[]*\]))*/;
inline._href = /\s*<?([\s\S]*?)>?(?:\s+['"]([\s\S]*?)['"])?\s*/;

inline.link = replace(inline.link)
  ('inside', inline._inside)
  ('href', inline._href)
  ();

inline.reflink = replace(inline.reflink)
  ('inside', inline._inside)
  ();

/**
 * Normal Inline Grammar
 */

inline.normal = merge({}, inline);

/**
 * Pedantic Inline Grammar
 */

inline.pedantic = merge({}, inline.normal, {
  strong: /^__(?=\S)([\s\S]*?\S)__(?!_)|^\*\*(?=\S)([\s\S]*?\S)\*\*(?!\*)/,
  em: /^_(?=\S)([\s\S]*?\S)_(?!_)|^\*(?=\S)([\s\S]*?\S)\*(?!\*)/
});

/**
 * GFM Inline Grammar
 */

inline.gfm = merge({}, inline.normal, {
  escape: replace(inline.escape)('])', '~|])')(),
  url: /^(https?:\/\/[^\s<]+[^<.,:;"')\]\s])/,
  del: /^~~(?=\S)([\s\S]*?\S)~~/,
  text: replace(inline.text)
    (']|', '~]|')
    ('|', '|https?://|')
    ()
});

/**
 * GFM + Line Breaks Inline Grammar
 */

inline.breaks = merge({}, inline.gfm, {
  br: replace(inline.br)('{2,}', '*')(),
  text: replace(inline.gfm.text)('{2,}', '*')()
});

/**
 * Inline Lexer & Compiler
 */

function InlineLexer(links, options) {
  this.options = options || marked.defaults;
  this.links = links;
  this.rules = inline.normal;
  this.renderer = this.options.renderer || new Renderer;
  this.renderer.options = this.options;

  if (!this.links) {
    throw new
      Error('Tokens array requires a `links` property.');
  }

  if (this.options.gfm) {
    if (this.options.breaks) {
      this.rules = inline.breaks;
    } else {
      this.rules = inline.gfm;
    }
  } else if (this.options.pedantic) {
    this.rules = inline.pedantic;
  }
}

/**
 * Expose Inline Rules
 */

InlineLexer.rules = inline;

/**
 * Static Lexing/Compiling Method
 */

InlineLexer.output = function(src, links, options) {
  var inline = new InlineLexer(links, options);
  return inline.output(src);
};

/**
 * Lexing/Compiling
 */

InlineLexer.prototype.output = function(src) {
  var out = ''
    , link
    , text
    , href
    , cap;

  while (src) {
    // escape
    if (cap = this.rules.escape.exec(src)) {
      src = src.substring(cap[0].length);
      out += cap[1];
      continue;
    }

    // autolink
    if (cap = this.rules.autolink.exec(src)) {
      src = src.substring(cap[0].length);
      if (cap[2] === '@') {
        text = cap[1].charAt(6) === ':'
          ? this.mangle(cap[1].substring(7))
          : this.mangle(cap[1]);
        href = this.mangle('mailto:') + text;
      } else {
        text = escape(cap[1]);
        href = text;
      }
      out += this.renderer.link(href, null, text);
      continue;
    }

    // url (gfm)
    if (!this.inLink && (cap = this.rules.url.exec(src))) {
      src = src.substring(cap[0].length);
      text = escape(cap[1]);
      href = text;
      out += this.renderer.link(href, null, text);
      continue;
    }

    // tag
    if (cap = this.rules.tag.exec(src)) {
      if (!this.inLink && /^<a /i.test(cap[0])) {
        this.inLink = true;
      } else if (this.inLink && /^<\/a>/i.test(cap[0])) {
        this.inLink = false;
      }
      src = src.substring(cap[0].length);
      out += this.options.sanitize
        ? escape(cap[0])
        : cap[0];
      continue;
    }

    // link
    if (cap = this.rules.link.exec(src)) {
      src = src.substring(cap[0].length);
      this.inLink = true;
      out += this.outputLink(cap, {
        href: cap[2],
        title: cap[3]
      });
      this.inLink = false;
      continue;
    }

    // reflink, nolink
    if ((cap = this.rules.reflink.exec(src))
        || (cap = this.rules.nolink.exec(src))) {
      src = src.substring(cap[0].length);
      link = (cap[2] || cap[1]).replace(/\s+/g, ' ');
      link = this.links[link.toLowerCase()];
      if (!link || !link.href) {
        out += cap[0].charAt(0);
        src = cap[0].substring(1) + src;
        continue;
      }
      this.inLink = true;
      out += this.outputLink(cap, link);
      this.inLink = false;
      continue;
    }

    // strong
    if (cap = this.rules.strong.exec(src)) {
      src = src.substring(cap[0].length);
      out += this.renderer.strong(this.output(cap[2] || cap[1]));
      continue;
    }

    // em
    if (cap = this.rules.em.exec(src)) {
      src = src.substring(cap[0].length);
      out += this.renderer.em(this.output(cap[2] || cap[1]));
      continue;
    }

    // code
    if (cap = this.rules.code.exec(src)) {
      src = src.substring(cap[0].length);
      out += this.renderer.codespan(escape(cap[2], true));
      continue;
    }

    // br
    if (cap = this.rules.br.exec(src)) {
      src = src.substring(cap[0].length);
      out += this.renderer.br();
      continue;
    }

    // del (gfm)
    if (cap = this.rules.del.exec(src)) {
      src = src.substring(cap[0].length);
      out += this.renderer.del(this.output(cap[1]));
      continue;
    }

    // text
    if (cap = this.rules.text.exec(src)) {
      src = src.substring(cap[0].length);
      out += escape(this.smartypants(cap[0]));
      continue;
    }

    if (src) {
      throw new
        Error('Infinite loop on byte: ' + src.charCodeAt(0));
    }
  }

  return out;
};

/**
 * Compile Link
 */

InlineLexer.prototype.outputLink = function(cap, link) {
  var href = escape(link.href)
    , title = link.title ? escape(link.title) : null;

  return cap[0].charAt(0) !== '!'
    ? this.renderer.link(href, title, this.output(cap[1]))
    : this.renderer.image(href, title, escape(cap[1]));
};

/**
 * Smartypants Transformations
 */

InlineLexer.prototype.smartypants = function(text) {
  if (!this.options.smartypants) return text;
  return text
    // em-dashes
    .replace(/--/g, '\u2014')
    // opening singles
    .replace(/(^|[-\u2014/(\[{"\s])'/g, '$1\u2018')
    // closing singles & apostrophes
    .replace(/'/g, '\u2019')
    // opening doubles
    .replace(/(^|[-\u2014/(\[{\u2018\s])"/g, '$1\u201c')
    // closing doubles
    .replace(/"/g, '\u201d')
    // ellipses
    .replace(/\.{3}/g, '\u2026');
};

/**
 * Mangle Links
 */

InlineLexer.prototype.mangle = function(text) {
  var out = ''
    , l = text.length
    , i = 0
    , ch;

  for (; i < l; i++) {
    ch = text.charCodeAt(i);
    if (Math.random() > 0.5) {
      ch = 'x' + ch.toString(16);
    }
    out += '&#' + ch + ';';
  }

  return out;
};

/**
 * Renderer
 */

function Renderer(options) {
  this.options = options || {};
}

Renderer.prototype.code = function(code, lang, escaped) {
  if (this.options.highlight) {
    var out = this.options.highlight(code, lang);
    if (out != null && out !== code) {
      escaped = true;
      code = out;
    }
  }

  if (!lang) {
    return '<pre><code>'
      + (escaped ? code : escape(code, true))
      + '\n</code></pre>';
  }

  return '<pre><code class="'
    + this.options.langPrefix
    + escape(lang, true)
    + '">'
    + (escaped ? code : escape(code, true))
    + '\n</code></pre>\n';
};

Renderer.prototype.blockquote = function(quote) {
  return '<blockquote>\n' + quote + '</blockquote>\n';
};

Renderer.prototype.html = function(html) {
  return html;
};

Renderer.prototype.heading = function(text, level, raw) {
  return '<h'
    + level
    + ' id="'
    + this.options.headerPrefix
    + raw.toLowerCase().replace(/[^\w]+/g, '-')
    + '">'
    + text
    + '</h'
    + level
    + '>\n';
};

Renderer.prototype.hr = function() {
  return this.options.xhtml ? '<hr/>\n' : '<hr>\n';
};

Renderer.prototype.list = function(body, ordered) {
  var type = ordered ? 'ol' : 'ul';
  return '<' + type + '>\n' + body + '</' + type + '>\n';
};

Renderer.prototype.listitem = function(text) {
  return '<li>' + text + '</li>\n';
};

Renderer.prototype.paragraph = function(text) {
  return '<p>' + text + '</p>\n';
};

Renderer.prototype.table = function(header, body) {
  return '<table>\n'
    + '<thead>\n'
    + header
    + '</thead>\n'
    + '<tbody>\n'
    + body
    + '</tbody>\n'
    + '</table>\n';
};

Renderer.prototype.tablerow = function(content) {
  return '<tr>\n' + content + '</tr>\n';
};

Renderer.prototype.tablecell = function(content, flags) {
  var type = flags.header ? 'th' : 'td';
  var tag = flags.align
    ? '<' + type + ' style="text-align:' + flags.align + '">'
    : '<' + type + '>';
  return tag + content + '</' + type + '>\n';
};

// span level renderer
Renderer.prototype.strong = function(text) {
  return '<strong>' + text + '</strong>';
};

Renderer.prototype.em = function(text) {
  return '<em>' + text + '</em>';
};

Renderer.prototype.codespan = function(text) {
  return '<code>' + text + '</code>';
};

Renderer.prototype.br = function() {
  return this.options.xhtml ? '<br/>' : '<br>';
};

Renderer.prototype.del = function(text) {
  return '<del>' + text + '</del>';
};

Renderer.prototype.link = function(href, title, text) {
  if (this.options.sanitize) {
    try {
      var prot = decodeURIComponent(unescape(href))
        .replace(/[^\w:]/g, '')
        .toLowerCase();
    } catch (e) {
      return '';
    }
    if (prot.indexOf('javascript:') === 0) {
      return '';
    }
  }
  var out = '<a href="' + href + '"';
  if (title) {
    out += ' title="' + title + '"';
  }
  out += '>' + text + '</a>';
  return out;
};

Renderer.prototype.image = function(href, title, text) {
  var out = '<img src="' + href + '" alt="' + text + '"';
  if (title) {
    out += ' title="' + title + '"';
  }
  out += this.options.xhtml ? '/>' : '>';
  return out;
};

/**
 * Parsing & Compiling
 */

function Parser(options) {
  this.tokens = [];
  this.token = null;
  this.options = options || marked.defaults;
  this.options.renderer = this.options.renderer || new Renderer;
  this.renderer = this.options.renderer;
  this.renderer.options = this.options;
}

/**
 * Static Parse Method
 */

Parser.parse = function(src, options, renderer) {
  var parser = new Parser(options, renderer);
  return parser.parse(src);
};

/**
 * Parse Loop
 */

Parser.prototype.parse = function(src) {
  this.inline = new InlineLexer(src.links, this.options, this.renderer);
  this.tokens = src.reverse();

  var out = '';
  while (this.next()) {
    out += this.tok();
  }

  return out;
};

/**
 * Next Token
 */

Parser.prototype.next = function() {
  return this.token = this.tokens.pop();
};

/**
 * Preview Next Token
 */

Parser.prototype.peek = function() {
  return this.tokens[this.tokens.length - 1] || 0;
};

/**
 * Parse Text Tokens
 */

Parser.prototype.parseText = function() {
  var body = this.token.text;

  while (this.peek().type === 'text') {
    body += '\n' + this.next().text;
  }

  return this.inline.output(body);
};

/**
 * Parse Current Token
 */

Parser.prototype.tok = function() {
  switch (this.token.type) {
    case 'space': {
      return '';
    }
    case 'hr': {
      return this.renderer.hr();
    }
    case 'heading': {
      return this.renderer.heading(
        this.inline.output(this.token.text),
        this.token.depth,
        this.token.text);
    }
    case 'code': {
      return this.renderer.code(this.token.text,
        this.token.lang,
        this.token.escaped);
    }
    case 'table': {
      var header = ''
        , body = ''
        , i
        , row
        , cell
        , flags
        , j;

      // header
      cell = '';
      for (i = 0; i < this.token.header.length; i++) {
        flags = { header: true, align: this.token.align[i] };
        cell += this.renderer.tablecell(
          this.inline.output(this.token.header[i]),
          { header: true, align: this.token.align[i] }
        );
      }
      header += this.renderer.tablerow(cell);

      for (i = 0; i < this.token.cells.length; i++) {
        row = this.token.cells[i];

        cell = '';
        for (j = 0; j < row.length; j++) {
          cell += this.renderer.tablecell(
            this.inline.output(row[j]),
            { header: false, align: this.token.align[j] }
          );
        }

        body += this.renderer.tablerow(cell);
      }
      return this.renderer.table(header, body);
    }
    case 'blockquote_start': {
      var body = '';

      while (this.next().type !== 'blockquote_end') {
        body += this.tok();
      }

      return this.renderer.blockquote(body);
    }
    case 'list_start': {
      var body = ''
        , ordered = this.token.ordered;

      while (this.next().type !== 'list_end') {
        body += this.tok();
      }

      return this.renderer.list(body, ordered);
    }
    case 'list_item_start': {
      var body = '';

      while (this.next().type !== 'list_item_end') {
        body += this.token.type === 'text'
          ? this.parseText()
          : this.tok();
      }

      return this.renderer.listitem(body);
    }
    case 'loose_item_start': {
      var body = '';

      while (this.next().type !== 'list_item_end') {
        body += this.tok();
      }

      return this.renderer.listitem(body);
    }
    case 'html': {
      var html = !this.token.pre && !this.options.pedantic
        ? this.inline.output(this.token.text)
        : this.token.text;
      return this.renderer.html(html);
    }
    case 'paragraph': {
      return this.renderer.paragraph(this.inline.output(this.token.text));
    }
    case 'text': {
      return this.renderer.paragraph(this.parseText());
    }
  }
};

/**
 * Helpers
 */

function escape(html, encode) {
  return html
    .replace(!encode ? /&(?!#?\w+;)/g : /&/g, '&amp;')
    .replace(/</g, '&lt;')
    .replace(/>/g, '&gt;')
    .replace(/"/g, '&quot;')
    .replace(/'/g, '&#39;');
}

function unescape(html) {
  return html.replace(/&([#\w]+);/g, function(_, n) {
    n = n.toLowerCase();
    if (n === 'colon') return ':';
    if (n.charAt(0) === '#') {
      return n.charAt(1) === 'x'
        ? String.fromCharCode(parseInt(n.substring(2), 16))
        : String.fromCharCode(+n.substring(1));
    }
    return '';
  });
}

function replace(regex, opt) {
  regex = regex.source;
  opt = opt || '';
  return function self(name, val) {
    if (!name) return new RegExp(regex, opt);
    val = val.source || val;
    val = val.replace(/(^|[^\[])\^/g, '$1');
    regex = regex.replace(name, val);
    return self;
  };
}

function noop() {}
noop.exec = noop;

function merge(obj) {
  var i = 1
    , target
    , key;

  for (; i < arguments.length; i++) {
    target = arguments[i];
    for (key in target) {
      if (Object.prototype.hasOwnProperty.call(target, key)) {
        obj[key] = target[key];
      }
    }
  }

  return obj;
}


/**
 * Marked
 */

function marked(src, opt, callback) {
  if (callback || typeof opt === 'function') {
    if (!callback) {
      callback = opt;
      opt = null;
    }

    opt = merge({}, marked.defaults, opt || {});

    var highlight = opt.highlight
      , tokens
      , pending
      , i = 0;

    try {
      tokens = Lexer.lex(src, opt)
    } catch (e) {
      return callback(e);
    }

    pending = tokens.length;

    var done = function() {
      var out, err;

      try {
        out = Parser.parse(tokens, opt);
      } catch (e) {
        err = e;
      }

      opt.highlight = highlight;

      return err
        ? callback(err)
        : callback(null, out);
    };

    if (!highlight || highlight.length < 3) {
      return done();
    }

    delete opt.highlight;

    if (!pending) return done();

    for (; i < tokens.length; i++) {
      (function(token) {
        if (token.type !== 'code') {
          return --pending || done();
        }
        return highlight(token.text, token.lang, function(err, code) {
          if (code == null || code === token.text) {
            return --pending || done();
          }
          token.text = code;
          token.escaped = true;
          --pending || done();
        });
      })(tokens[i]);
    }

    return;
  }
  try {
    if (opt) opt = merge({}, marked.defaults, opt);
    return Parser.parse(Lexer.lex(src, opt), opt);
  } catch (e) {
    e.message += '\nPlease report this to https://github.com/chjj/marked.';
    if ((opt || marked.defaults).silent) {
      return '<p>An error occured:</p><pre>'
        + escape(e.message + '', true)
        + '</pre>';
    }
    throw e;
  }
}

/**
 * Options
 */

marked.options =
marked.setOptions = function(opt) {
  merge(marked.defaults, opt);
  return marked;
};

marked.defaults = {
  gfm: true,
  tables: true,
  breaks: false,
  pedantic: false,
  sanitize: false,
  smartLists: false,
  silent: false,
  highlight: null,
  langPrefix: 'lang-',
  smartypants: false,
  headerPrefix: '',
  renderer: new Renderer,
  xhtml: false
};

/**
 * Expose
 */

marked.Parser = Parser;
marked.parser = Parser.parse;

marked.Renderer = Renderer;

marked.Lexer = Lexer;
marked.lexer = Lexer.lex;

marked.InlineLexer = InlineLexer;
marked.inlineLexer = InlineLexer.output;

marked.parse = marked;

if (typeof exports === 'object') {
  module.exports = marked;
} else if (typeof define === 'function' && define.amd) {
  define(function() { return marked; });
} else {
  this.marked = marked;
}

}).call(function() {
  return this || (typeof window !== 'undefined' ? window : global);
}());
</script>


<!--
Element wrapper for the `marked` (http://marked.org/) library.

@class marked-element
@blurb Element wrapper for the marked library.
@status alpha
@snap snap.png
-->
<polymer-element name="marked-element" attributes="text" assetpath="../marked-element/">
<script>

  Polymer('marked-element', {

    text: '',

    attached: function() {
      marked.setOptions({
        highlight: this.highlight.bind(this)
      });
      if (!this.text) {
        this.text = this.innerHTML;
      }
    },

    textChanged: function () {
      this.innerHTML = marked(this.text);
    },

    highlight: function(code, lang) {
      var event = this.fire('marked-js-highlight', {code: code, lang: lang});
      return event.detail.code || code;
    }

  });

</script>
</polymer-element>


<script>// Copyright (C) 2006 Google Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//      http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.


/**
 * @fileoverview
 * some functions for browser-side pretty printing of code contained in html.
 *
 * <p>
 * For a fairly comprehensive set of languages see the
 * <a href="http://google-code-prettify.googlecode.com/svn/trunk/README.html#langs">README</a>
 * file that came with this source.  At a minimum, the lexer should work on a
 * number of languages including C and friends, Java, Python, Bash, SQL, HTML,
 * XML, CSS, Javascript, and Makefiles.  It works passably on Ruby, PHP and Awk
 * and a subset of Perl, but, because of commenting conventions, doesn't work on
 * Smalltalk, Lisp-like, or CAML-like languages without an explicit lang class.
 * <p>
 * Usage: <ol>
 * <li> include this source file in an html page via
 *   {@code <script type="text/javascript" src="/path/to/prettify.js"><\/script>}
 * <li> define style rules.  See the example page for examples.
 * <li> mark the {@code <pre>} and {@code <code>} tags in your source with
 *    {@code class=prettyprint.}
 *    You can also use the (html deprecated) {@code <xmp>} tag, but the pretty
 *    printer needs to do more substantial DOM manipulations to support that, so
 *    some css styles may not be preserved.
 * </ol>
 * That's it.  I wanted to keep the API as simple as possible, so there's no
 * need to specify which language the code is in, but if you wish, you can add
 * another class to the {@code <pre>} or {@code <code>} element to specify the
 * language, as in {@code <pre class="prettyprint lang-java">}.  Any class that
 * starts with "lang-" followed by a file extension, specifies the file type.
 * See the "lang-*.js" files in this directory for code that implements
 * per-language file handlers.
 * <p>
 * Change log:<br>
 * cbeust, 2006/08/22
 * <blockquote>
 *   Java annotations (start with "@") are now captured as literals ("lit")
 * </blockquote>
 * @requires console
 */

// JSLint declarations
/*global console, document, navigator, setTimeout, window, define */

/**
 * Split {@code prettyPrint} into multiple timeouts so as not to interfere with
 * UI events.
 * If set to {@code false}, {@code prettyPrint()} is synchronous.
 */
window['PR_SHOULD_USE_CONTINUATION'] = true;

/**
 * Find all the {@code <pre>} and {@code <code>} tags in the DOM with
 * {@code class=prettyprint} and prettify them.
 *
 * @param {Function?} opt_whenDone if specified, called when the last entry
 *     has been finished.
 */
var prettyPrintOne;
/**
 * Pretty print a chunk of code.
 *
 * @param {string} sourceCodeHtml code as html
 * @return {string} code as html, but prettier
 */
var prettyPrint;


(function () {
  var win = window;
  // Keyword lists for various languages.
  // We use things that coerce to strings to make them compact when minified
  // and to defeat aggressive optimizers that fold large string constants.
  var FLOW_CONTROL_KEYWORDS = ["break,continue,do,else,for,if,return,while"];
  var C_KEYWORDS = [FLOW_CONTROL_KEYWORDS,"auto,case,char,const,default," + 
      "double,enum,extern,float,goto,int,long,register,short,signed,sizeof," +
      "static,struct,switch,typedef,union,unsigned,void,volatile"];
  var COMMON_KEYWORDS = [C_KEYWORDS,"catch,class,delete,false,import," +
      "new,operator,private,protected,public,this,throw,true,try,typeof"];
  var CPP_KEYWORDS = [COMMON_KEYWORDS,"alignof,align_union,asm,axiom,bool," +
      "concept,concept_map,const_cast,constexpr,decltype," +
      "dynamic_cast,explicit,export,friend,inline,late_check," +
      "mutable,namespace,nullptr,reinterpret_cast,static_assert,static_cast," +
      "template,typeid,typename,using,virtual,where"];
  var JAVA_KEYWORDS = [COMMON_KEYWORDS,
      "abstract,boolean,byte,extends,final,finally,implements,import," +
      "instanceof,null,native,package,strictfp,super,synchronized,throws," +
      "transient"];
  var CSHARP_KEYWORDS = [JAVA_KEYWORDS,
      "as,base,by,checked,decimal,delegate,descending,dynamic,event," +
      "fixed,foreach,from,group,implicit,in,interface,internal,into,is,let," +
      "lock,object,out,override,orderby,params,partial,readonly,ref,sbyte," +
      "sealed,stackalloc,string,select,uint,ulong,unchecked,unsafe,ushort," +
      "var,virtual,where"];
  var COFFEE_KEYWORDS = "all,and,by,catch,class,else,extends,false,finally," +
      "for,if,in,is,isnt,loop,new,no,not,null,of,off,on,or,return,super,then," +
      "throw,true,try,unless,until,when,while,yes";
  var JSCRIPT_KEYWORDS = [COMMON_KEYWORDS,
      "debugger,eval,export,function,get,null,set,undefined,var,with," +
      "Infinity,NaN"];
  var PERL_KEYWORDS = "caller,delete,die,do,dump,elsif,eval,exit,foreach,for," +
      "goto,if,import,last,local,my,next,no,our,print,package,redo,require," +
      "sub,undef,unless,until,use,wantarray,while,BEGIN,END";
  var PYTHON_KEYWORDS = [FLOW_CONTROL_KEYWORDS, "and,as,assert,class,def,del," +
      "elif,except,exec,finally,from,global,import,in,is,lambda," +
      "nonlocal,not,or,pass,print,raise,try,with,yield," +
      "False,True,None"];
  var RUBY_KEYWORDS = [FLOW_CONTROL_KEYWORDS, "alias,and,begin,case,class," +
      "def,defined,elsif,end,ensure,false,in,module,next,nil,not,or,redo," +
      "rescue,retry,self,super,then,true,undef,unless,until,when,yield," +
      "BEGIN,END"];
  var SH_KEYWORDS = [FLOW_CONTROL_KEYWORDS, "case,done,elif,esac,eval,fi," +
      "function,in,local,set,then,until"];
  var ALL_KEYWORDS = [
      CPP_KEYWORDS, CSHARP_KEYWORDS, JSCRIPT_KEYWORDS, PERL_KEYWORDS +
      PYTHON_KEYWORDS, RUBY_KEYWORDS, SH_KEYWORDS];
  var C_TYPES = /^(DIR|FILE|vector|(de|priority_)?queue|list|stack|(const_)?iterator|(multi)?(set|map)|bitset|u?(int|float)\d*)\b/;

  // token style names.  correspond to css classes
  /**
   * token style for a string literal
   * @const
   */
  var PR_STRING = 'str';
  /**
   * token style for a keyword
   * @const
   */
  var PR_KEYWORD = 'kwd';
  /**
   * token style for a comment
   * @const
   */
  var PR_COMMENT = 'com';
  /**
   * token style for a type
   * @const
   */
  var PR_TYPE = 'typ';
  /**
   * token style for a literal value.  e.g. 1, null, true.
   * @const
   */
  var PR_LITERAL = 'lit';
  /**
   * token style for a punctuation string.
   * @const
   */
  var PR_PUNCTUATION = 'pun';
  /**
   * token style for plain text.
   * @const
   */
  var PR_PLAIN = 'pln';

  /**
   * token style for an sgml tag.
   * @const
   */
  var PR_TAG = 'tag';
  /**
   * token style for a markup declaration such as a DOCTYPE.
   * @const
   */
  var PR_DECLARATION = 'dec';
  /**
   * token style for embedded source.
   * @const
   */
  var PR_SOURCE = 'src';
  /**
   * token style for an sgml attribute name.
   * @const
   */
  var PR_ATTRIB_NAME = 'atn';
  /**
   * token style for an sgml attribute value.
   * @const
   */
  var PR_ATTRIB_VALUE = 'atv';

  /**
   * A class that indicates a section of markup that is not code, e.g. to allow
   * embedding of line numbers within code listings.
   * @const
   */
  var PR_NOCODE = 'nocode';



/**
 * A set of tokens that can precede a regular expression literal in
 * javascript
 * http://web.archive.org/web/20070717142515/http://www.mozilla.org/js/language/js20/rationale/syntax.html
 * has the full list, but I've removed ones that might be problematic when
 * seen in languages that don't support regular expression literals.
 *
 * <p>Specifically, I've removed any keywords that can't precede a regexp
 * literal in a syntactically legal javascript program, and I've removed the
 * "in" keyword since it's not a keyword in many languages, and might be used
 * as a count of inches.
 *
 * <p>The link above does not accurately describe EcmaScript rules since
 * it fails to distinguish between (a=++/b/i) and (a++/b/i) but it works
 * very well in practice.
 *
 * @private
 * @const
 */
var REGEXP_PRECEDER_PATTERN = '(?:^^\\.?|[+-]|[!=]=?=?|\\#|%=?|&&?=?|\\(|\\*=?|[+\\-]=|->|\\/=?|::?|<<?=?|>>?>?=?|,|;|\\?|@|\\[|~|{|\\^\\^?=?|\\|\\|?=?|break|case|continue|delete|do|else|finally|instanceof|return|throw|try|typeof)\\s*';

// CAVEAT: this does not properly handle the case where a regular
// expression immediately follows another since a regular expression may
// have flags for case-sensitivity and the like.  Having regexp tokens
// adjacent is not valid in any language I'm aware of, so I'm punting.
// TODO: maybe style special characters inside a regexp as punctuation.


  /**
   * Given a group of {@link RegExp}s, returns a {@code RegExp} that globally
   * matches the union of the sets of strings matched by the input RegExp.
   * Since it matches globally, if the input strings have a start-of-input
   * anchor (/^.../), it is ignored for the purposes of unioning.
   * @param {Array.<RegExp>} regexs non multiline, non-global regexs.
   * @return {RegExp} a global regex.
   */
  function combinePrefixPatterns(regexs) {
    var capturedGroupIndex = 0;
  
    var needToFoldCase = false;
    var ignoreCase = false;
    for (var i = 0, n = regexs.length; i < n; ++i) {
      var regex = regexs[i];
      if (regex.ignoreCase) {
        ignoreCase = true;
      } else if (/[a-z]/i.test(regex.source.replace(
                     /\\u[0-9a-f]{4}|\\x[0-9a-f]{2}|\\[^ux]/gi, ''))) {
        needToFoldCase = true;
        ignoreCase = false;
        break;
      }
    }
  
    var escapeCharToCodeUnit = {
      'b': 8,
      't': 9,
      'n': 0xa,
      'v': 0xb,
      'f': 0xc,
      'r': 0xd
    };
  
    function decodeEscape(charsetPart) {
      var cc0 = charsetPart.charCodeAt(0);
      if (cc0 !== 92 /* \\ */) {
        return cc0;
      }
      var c1 = charsetPart.charAt(1);
      cc0 = escapeCharToCodeUnit[c1];
      if (cc0) {
        return cc0;
      } else if ('0' <= c1 && c1 <= '7') {
        return parseInt(charsetPart.substring(1), 8);
      } else if (c1 === 'u' || c1 === 'x') {
        return parseInt(charsetPart.substring(2), 16);
      } else {
        return charsetPart.charCodeAt(1);
      }
    }
  
    function encodeEscape(charCode) {
      if (charCode < 0x20) {
        return (charCode < 0x10 ? '\\x0' : '\\x') + charCode.toString(16);
      }
      var ch = String.fromCharCode(charCode);
      return (ch === '\\' || ch === '-' || ch === ']' || ch === '^')
          ? "\\" + ch : ch;
    }
  
    function caseFoldCharset(charSet) {
      var charsetParts = charSet.substring(1, charSet.length - 1).match(
          new RegExp(
              '\\\\u[0-9A-Fa-f]{4}'
              + '|\\\\x[0-9A-Fa-f]{2}'
              + '|\\\\[0-3][0-7]{0,2}'
              + '|\\\\[0-7]{1,2}'
              + '|\\\\[\\s\\S]'
              + '|-'
              + '|[^-\\\\]',
              'g'));
      var ranges = [];
      var inverse = charsetParts[0] === '^';
  
      var out = ['['];
      if (inverse) { out.push('^'); }
  
      for (var i = inverse ? 1 : 0, n = charsetParts.length; i < n; ++i) {
        var p = charsetParts[i];
        if (/\\[bdsw]/i.test(p)) {  // Don't muck with named groups.
          out.push(p);
        } else {
          var start = decodeEscape(p);
          var end;
          if (i + 2 < n && '-' === charsetParts[i + 1]) {
            end = decodeEscape(charsetParts[i + 2]);
            i += 2;
          } else {
            end = start;
          }
          ranges.push([start, end]);
          // If the range might intersect letters, then expand it.
          // This case handling is too simplistic.
          // It does not deal with non-latin case folding.
          // It works for latin source code identifiers though.
          if (!(end < 65 || start > 122)) {
            if (!(end < 65 || start > 90)) {
              ranges.push([Math.max(65, start) | 32, Math.min(end, 90) | 32]);
            }
            if (!(end < 97 || start > 122)) {
              ranges.push([Math.max(97, start) & ~32, Math.min(end, 122) & ~32]);
            }
          }
        }
      }
  
      // [[1, 10], [3, 4], [8, 12], [14, 14], [16, 16], [17, 17]]
      // -> [[1, 12], [14, 14], [16, 17]]
      ranges.sort(function (a, b) { return (a[0] - b[0]) || (b[1]  - a[1]); });
      var consolidatedRanges = [];
      var lastRange = [];
      for (var i = 0; i < ranges.length; ++i) {
        var range = ranges[i];
        if (range[0] <= lastRange[1] + 1) {
          lastRange[1] = Math.max(lastRange[1], range[1]);
        } else {
          consolidatedRanges.push(lastRange = range);
        }
      }
  
      for (var i = 0; i < consolidatedRanges.length; ++i) {
        var range = consolidatedRanges[i];
        out.push(encodeEscape(range[0]));
        if (range[1] > range[0]) {
          if (range[1] + 1 > range[0]) { out.push('-'); }
          out.push(encodeEscape(range[1]));
        }
      }
      out.push(']');
      return out.join('');
    }
  
    function allowAnywhereFoldCaseAndRenumberGroups(regex) {
      // Split into character sets, escape sequences, punctuation strings
      // like ('(', '(?:', ')', '^'), and runs of characters that do not
      // include any of the above.
      var parts = regex.source.match(
          new RegExp(
              '(?:'
              + '\\[(?:[^\\x5C\\x5D]|\\\\[\\s\\S])*\\]'  // a character set
              + '|\\\\u[A-Fa-f0-9]{4}'  // a unicode escape
              + '|\\\\x[A-Fa-f0-9]{2}'  // a hex escape
              + '|\\\\[0-9]+'  // a back-reference or octal escape
              + '|\\\\[^ux0-9]'  // other escape sequence
              + '|\\(\\?[:!=]'  // start of a non-capturing group
              + '|[\\(\\)\\^]'  // start/end of a group, or line start
              + '|[^\\x5B\\x5C\\(\\)\\^]+'  // run of other characters
              + ')',
              'g'));
      var n = parts.length;
  
      // Maps captured group numbers to the number they will occupy in
      // the output or to -1 if that has not been determined, or to
      // undefined if they need not be capturing in the output.
      var capturedGroups = [];
  
      // Walk over and identify back references to build the capturedGroups
      // mapping.
      for (var i = 0, groupIndex = 0; i < n; ++i) {
        var p = parts[i];
        if (p === '(') {
          // groups are 1-indexed, so max group index is count of '('
          ++groupIndex;
        } else if ('\\' === p.charAt(0)) {
          var decimalValue = +p.substring(1);
          if (decimalValue) {
            if (decimalValue <= groupIndex) {
              capturedGroups[decimalValue] = -1;
            } else {
              // Replace with an unambiguous escape sequence so that
              // an octal escape sequence does not turn into a backreference
              // to a capturing group from an earlier regex.
              parts[i] = encodeEscape(decimalValue);
            }
          }
        }
      }
  
      // Renumber groups and reduce capturing groups to non-capturing groups
      // where possible.
      for (var i = 1; i < capturedGroups.length; ++i) {
        if (-1 === capturedGroups[i]) {
          capturedGroups[i] = ++capturedGroupIndex;
        }
      }
      for (var i = 0, groupIndex = 0; i < n; ++i) {
        var p = parts[i];
        if (p === '(') {
          ++groupIndex;
          if (!capturedGroups[groupIndex]) {
            parts[i] = '(?:';
          }
        } else if ('\\' === p.charAt(0)) {
          var decimalValue = +p.substring(1);
          if (decimalValue && decimalValue <= groupIndex) {
            parts[i] = '\\' + capturedGroups[decimalValue];
          }
        }
      }
  
      // Remove any prefix anchors so that the output will match anywhere.
      // ^^ really does mean an anchored match though.
      for (var i = 0; i < n; ++i) {
        if ('^' === parts[i] && '^' !== parts[i + 1]) { parts[i] = ''; }
      }
  
      // Expand letters to groups to handle mixing of case-sensitive and
      // case-insensitive patterns if necessary.
      if (regex.ignoreCase && needToFoldCase) {
        for (var i = 0; i < n; ++i) {
          var p = parts[i];
          var ch0 = p.charAt(0);
          if (p.length >= 2 && ch0 === '[') {
            parts[i] = caseFoldCharset(p);
          } else if (ch0 !== '\\') {
            // TODO: handle letters in numeric escapes.
            parts[i] = p.replace(
                /[a-zA-Z]/g,
                function (ch) {
                  var cc = ch.charCodeAt(0);
                  return '[' + String.fromCharCode(cc & ~32, cc | 32) + ']';
                });
          }
        }
      }
  
      return parts.join('');
    }
  
    var rewritten = [];
    for (var i = 0, n = regexs.length; i < n; ++i) {
      var regex = regexs[i];
      if (regex.global || regex.multiline) { throw new Error('' + regex); }
      rewritten.push(
          '(?:' + allowAnywhereFoldCaseAndRenumberGroups(regex) + ')');
    }
  
    return new RegExp(rewritten.join('|'), ignoreCase ? 'gi' : 'g');
  }


  /**
   * Split markup into a string of source code and an array mapping ranges in
   * that string to the text nodes in which they appear.
   *
   * <p>
   * The HTML DOM structure:</p>
   * <pre>
   * (Element   "p"
   *   (Element "b"
   *     (Text  "print "))       ; #1
   *   (Text    "'Hello '")      ; #2
   *   (Element "br")            ; #3
   *   (Text    "  + 'World';")) ; #4
   * </pre>
   * <p>
   * corresponds to the HTML
   * {@code <p><b>print </b>'Hello '<br>  + 'World';</p>}.</p>
   *
   * <p>
   * It will produce the output:</p>
   * <pre>
   * {
   *   sourceCode: "print 'Hello '\n  + 'World';",
   *   //                     1          2
   *   //           012345678901234 5678901234567
   *   spans: [0, #1, 6, #2, 14, #3, 15, #4]
   * }
   * </pre>
   * <p>
   * where #1 is a reference to the {@code "print "} text node above, and so
   * on for the other text nodes.
   * </p>
   *
   * <p>
   * The {@code} spans array is an array of pairs.  Even elements are the start
   * indices of substrings, and odd elements are the text nodes (or BR elements)
   * that contain the text for those substrings.
   * Substrings continue until the next index or the end of the source.
   * </p>
   *
   * @param {Node} node an HTML DOM subtree containing source-code.
   * @param {boolean} isPreformatted true if white-space in text nodes should
   *    be considered significant.
   * @return {Object} source code and the text nodes in which they occur.
   */
  function extractSourceSpans(node, isPreformatted) {
    var nocode = /(?:^|\s)nocode(?:\s|$)/;
  
    var chunks = [];
    var length = 0;
    var spans = [];
    var k = 0;
  
    function walk(node) {
      switch (node.nodeType) {
        case 1:  // Element
          if (nocode.test(node.className)) { return; }
          for (var child = node.firstChild; child; child = child.nextSibling) {
            walk(child);
          }
          var nodeName = node.nodeName.toLowerCase();
          if ('br' === nodeName || 'li' === nodeName) {
            chunks[k] = '\n';
            spans[k << 1] = length++;
            spans[(k++ << 1) | 1] = node;
          }
          break;
        case 3: case 4:  // Text
          var text = node.nodeValue;
          if (text.length) {
            if (!isPreformatted) {
              text = text.replace(/[ \t\r\n]+/g, ' ');
            } else {
              text = text.replace(/\r\n?/g, '\n');  // Normalize newlines.
            }
            // TODO: handle tabs here?
            chunks[k] = text;
            spans[k << 1] = length;
            length += text.length;
            spans[(k++ << 1) | 1] = node;
          }
          break;
      }
    }
  
    walk(node);
  
    return {
      sourceCode: chunks.join('').replace(/\n$/, ''),
      spans: spans
    };
  }


  /**
   * Apply the given language handler to sourceCode and add the resulting
   * decorations to out.
   * @param {number} basePos the index of sourceCode within the chunk of source
   *    whose decorations are already present on out.
   */
  function appendDecorations(basePos, sourceCode, langHandler, out) {
    if (!sourceCode) { return; }
    var job = {
      sourceCode: sourceCode,
      basePos: basePos
    };
    langHandler(job);
    out.push.apply(out, job.decorations);
  }

  var notWs = /\S/;

  /**
   * Given an element, if it contains only one child element and any text nodes
   * it contains contain only space characters, return the sole child element.
   * Otherwise returns undefined.
   * <p>
   * This is meant to return the CODE element in {@code <pre><code ...>} when
   * there is a single child element that contains all the non-space textual
   * content, but not to return anything where there are multiple child elements
   * as in {@code <pre><code>...</code><code>...</code></pre>} or when there
   * is textual content.
   */
  function childContentWrapper(element) {
    var wrapper = undefined;
    for (var c = element.firstChild; c; c = c.nextSibling) {
      var type = c.nodeType;
      wrapper = (type === 1)  // Element Node
          ? (wrapper ? element : c)
          : (type === 3)  // Text Node
          ? (notWs.test(c.nodeValue) ? element : wrapper)
          : wrapper;
    }
    return wrapper === element ? undefined : wrapper;
  }

  /** Given triples of [style, pattern, context] returns a lexing function,
    * The lexing function interprets the patterns to find token boundaries and
    * returns a decoration list of the form
    * [index_0, style_0, index_1, style_1, ..., index_n, style_n]
    * where index_n is an index into the sourceCode, and style_n is a style
    * constant like PR_PLAIN.  index_n-1 <= index_n, and style_n-1 applies to
    * all characters in sourceCode[index_n-1:index_n].
    *
    * The stylePatterns is a list whose elements have the form
    * [style : string, pattern : RegExp, DEPRECATED, shortcut : string].
    *
    * Style is a style constant like PR_PLAIN, or can be a string of the
    * form 'lang-FOO', where FOO is a language extension describing the
    * language of the portion of the token in $1 after pattern executes.
    * E.g., if style is 'lang-lisp', and group 1 contains the text
    * '(hello (world))', then that portion of the token will be passed to the
    * registered lisp handler for formatting.
    * The text before and after group 1 will be restyled using this decorator
    * so decorators should take care that this doesn't result in infinite
    * recursion.  For example, the HTML lexer rule for SCRIPT elements looks
    * something like ['lang-js', /<[s]cript>(.+?)<\/script>/].  This may match
    * '<script>foo()<\/script>', which would cause the current decorator to
    * be called with '<script>' which would not match the same rule since
    * group 1 must not be empty, so it would be instead styled as PR_TAG by
    * the generic tag rule.  The handler registered for the 'js' extension would
    * then be called with 'foo()', and finally, the current decorator would
    * be called with '<\/script>' which would not match the original rule and
    * so the generic tag rule would identify it as a tag.
    *
    * Pattern must only match prefixes, and if it matches a prefix, then that
    * match is considered a token with the same style.
    *
    * Context is applied to the last non-whitespace, non-comment token
    * recognized.
    *
    * Shortcut is an optional string of characters, any of which, if the first
    * character, gurantee that this pattern and only this pattern matches.
    *
    * @param {Array} shortcutStylePatterns patterns that always start with
    *   a known character.  Must have a shortcut string.
    * @param {Array} fallthroughStylePatterns patterns that will be tried in
    *   order if the shortcut ones fail.  May have shortcuts.
    *
    * @return {function (Object)} a
    *   function that takes source code and returns a list of decorations.
    */
  function createSimpleLexer(shortcutStylePatterns, fallthroughStylePatterns) {
    var shortcuts = {};
    var tokenizer;
    (function () {
      var allPatterns = shortcutStylePatterns.concat(fallthroughStylePatterns);
      var allRegexs = [];
      var regexKeys = {};
      for (var i = 0, n = allPatterns.length; i < n; ++i) {
        var patternParts = allPatterns[i];
        var shortcutChars = patternParts[3];
        if (shortcutChars) {
          for (var c = shortcutChars.length; --c >= 0;) {
            shortcuts[shortcutChars.charAt(c)] = patternParts;
          }
        }
        var regex = patternParts[1];
        var k = '' + regex;
        if (!regexKeys.hasOwnProperty(k)) {
          allRegexs.push(regex);
          regexKeys[k] = null;
        }
      }
      allRegexs.push(/[\0-\uffff]/);
      tokenizer = combinePrefixPatterns(allRegexs);
    })();

    var nPatterns = fallthroughStylePatterns.length;

    /**
     * Lexes job.sourceCode and produces an output array job.decorations of
     * style classes preceded by the position at which they start in
     * job.sourceCode in order.
     *
     * @param {Object} job an object like <pre>{
     *    sourceCode: {string} sourceText plain text,
     *    basePos: {int} position of job.sourceCode in the larger chunk of
     *        sourceCode.
     * }</pre>
     */
    var decorate = function (job) {
      var sourceCode = job.sourceCode, basePos = job.basePos;
      /** Even entries are positions in source in ascending order.  Odd enties
        * are style markers (e.g., PR_COMMENT) that run from that position until
        * the end.
        * @type {Array.<number|string>}
        */
      var decorations = [basePos, PR_PLAIN];
      var pos = 0;  // index into sourceCode
      var tokens = sourceCode.match(tokenizer) || [];
      var styleCache = {};

      for (var ti = 0, nTokens = tokens.length; ti < nTokens; ++ti) {
        var token = tokens[ti];
        var style = styleCache[token];
        var match = void 0;

        var isEmbedded;
        if (typeof style === 'string') {
          isEmbedded = false;
        } else {
          var patternParts = shortcuts[token.charAt(0)];
          if (patternParts) {
            match = token.match(patternParts[1]);
            style = patternParts[0];
          } else {
            for (var i = 0; i < nPatterns; ++i) {
              patternParts = fallthroughStylePatterns[i];
              match = token.match(patternParts[1]);
              if (match) {
                style = patternParts[0];
                break;
              }
            }

            if (!match) {  // make sure that we make progress
              style = PR_PLAIN;
            }
          }

          isEmbedded = style.length >= 5 && 'lang-' === style.substring(0, 5);
          if (isEmbedded && !(match && typeof match[1] === 'string')) {
            isEmbedded = false;
            style = PR_SOURCE;
          }

          if (!isEmbedded) { styleCache[token] = style; }
        }

        var tokenStart = pos;
        pos += token.length;

        if (!isEmbedded) {
          decorations.push(basePos + tokenStart, style);
        } else {  // Treat group 1 as an embedded block of source code.
          var embeddedSource = match[1];
          var embeddedSourceStart = token.indexOf(embeddedSource);
          var embeddedSourceEnd = embeddedSourceStart + embeddedSource.length;
          if (match[2]) {
            // If embeddedSource can be blank, then it would match at the
            // beginning which would cause us to infinitely recurse on the
            // entire token, so we catch the right context in match[2].
            embeddedSourceEnd = token.length - match[2].length;
            embeddedSourceStart = embeddedSourceEnd - embeddedSource.length;
          }
          var lang = style.substring(5);
          // Decorate the left of the embedded source
          appendDecorations(
              basePos + tokenStart,
              token.substring(0, embeddedSourceStart),
              decorate, decorations);
          // Decorate the embedded source
          appendDecorations(
              basePos + tokenStart + embeddedSourceStart,
              embeddedSource,
              langHandlerForExtension(lang, embeddedSource),
              decorations);
          // Decorate the right of the embedded section
          appendDecorations(
              basePos + tokenStart + embeddedSourceEnd,
              token.substring(embeddedSourceEnd),
              decorate, decorations);
        }
      }
      job.decorations = decorations;
    };
    return decorate;
  }

  /** returns a function that produces a list of decorations from source text.
    *
    * This code treats ", ', and ` as string delimiters, and \ as a string
    * escape.  It does not recognize perl's qq() style strings.
    * It has no special handling for double delimiter escapes as in basic, or
    * the tripled delimiters used in python, but should work on those regardless
    * although in those cases a single string literal may be broken up into
    * multiple adjacent string literals.
    *
    * It recognizes C, C++, and shell style comments.
    *
    * @param {Object} options a set of optional parameters.
    * @return {function (Object)} a function that examines the source code
    *     in the input job and builds the decoration list.
    */
  function sourceDecorator(options) {
    var shortcutStylePatterns = [], fallthroughStylePatterns = [];
    if (options['tripleQuotedStrings']) {
      // '''multi-line-string''', 'single-line-string', and double-quoted
      shortcutStylePatterns.push(
          [PR_STRING,  /^(?:\'\'\'(?:[^\'\\]|\\[\s\S]|\'{1,2}(?=[^\']))*(?:\'\'\'|$)|\"\"\"(?:[^\"\\]|\\[\s\S]|\"{1,2}(?=[^\"]))*(?:\"\"\"|$)|\'(?:[^\\\']|\\[\s\S])*(?:\'|$)|\"(?:[^\\\"]|\\[\s\S])*(?:\"|$))/,
           null, '\'"']);
    } else if (options['multiLineStrings']) {
      // 'multi-line-string', "multi-line-string"
      shortcutStylePatterns.push(
          [PR_STRING,  /^(?:\'(?:[^\\\']|\\[\s\S])*(?:\'|$)|\"(?:[^\\\"]|\\[\s\S])*(?:\"|$)|\`(?:[^\\\`]|\\[\s\S])*(?:\`|$))/,
           null, '\'"`']);
    } else {
      // 'single-line-string', "single-line-string"
      shortcutStylePatterns.push(
          [PR_STRING,
           /^(?:\'(?:[^\\\'\r\n]|\\.)*(?:\'|$)|\"(?:[^\\\"\r\n]|\\.)*(?:\"|$))/,
           null, '"\'']);
    }
    if (options['verbatimStrings']) {
      // verbatim-string-literal production from the C# grammar.  See issue 93.
      fallthroughStylePatterns.push(
          [PR_STRING, /^@\"(?:[^\"]|\"\")*(?:\"|$)/, null]);
    }
    var hc = options['hashComments'];
    if (hc) {
      if (options['cStyleComments']) {
        if (hc > 1) {  // multiline hash comments
          shortcutStylePatterns.push(
              [PR_COMMENT, /^#(?:##(?:[^#]|#(?!##))*(?:###|$)|.*)/, null, '#']);
        } else {
          // Stop C preprocessor declarations at an unclosed open comment
          shortcutStylePatterns.push(
              [PR_COMMENT, /^#(?:(?:define|e(?:l|nd)if|else|error|ifn?def|include|line|pragma|undef|warning)\b|[^\r\n]*)/,
               null, '#']);
        }
        // #include <stdio.h>
        fallthroughStylePatterns.push(
            [PR_STRING,
             /^<(?:(?:(?:\.\.\/)*|\/?)(?:[\w-]+(?:\/[\w-]+)+)?[\w-]+\.h(?:h|pp|\+\+)?|[a-z]\w*)>/,
             null]);
      } else {
        shortcutStylePatterns.push([PR_COMMENT, /^#[^\r\n]*/, null, '#']);
      }
    }
    if (options['cStyleComments']) {
      fallthroughStylePatterns.push([PR_COMMENT, /^\/\/[^\r\n]*/, null]);
      fallthroughStylePatterns.push(
          [PR_COMMENT, /^\/\*[\s\S]*?(?:\*\/|$)/, null]);
    }
    if (options['regexLiterals']) {
      /**
       * @const
       */
      var REGEX_LITERAL = (
          // A regular expression literal starts with a slash that is
          // not followed by * or / so that it is not confused with
          // comments.
          '/(?=[^/*])'
          // and then contains any number of raw characters,
          + '(?:[^/\\x5B\\x5C]'
          // escape sequences (\x5C),
          +    '|\\x5C[\\s\\S]'
          // or non-nesting character sets (\x5B\x5D);
          +    '|\\x5B(?:[^\\x5C\\x5D]|\\x5C[\\s\\S])*(?:\\x5D|$))+'
          // finally closed by a /.
          + '/');
      fallthroughStylePatterns.push(
          ['lang-regex',
           new RegExp('^' + REGEXP_PRECEDER_PATTERN + '(' + REGEX_LITERAL + ')')
           ]);
    }

    var types = options['types'];
    if (types) {
      fallthroughStylePatterns.push([PR_TYPE, types]);
    }

    var keywords = ("" + options['keywords']).replace(/^ | $/g, '');
    if (keywords.length) {
      fallthroughStylePatterns.push(
          [PR_KEYWORD,
           new RegExp('^(?:' + keywords.replace(/[\s,]+/g, '|') + ')\\b'),
           null]);
    }

    shortcutStylePatterns.push([PR_PLAIN,       /^\s+/, null, ' \r\n\t\xA0']);

    var punctuation =
      // The Bash man page says

      // A word is a sequence of characters considered as a single
      // unit by GRUB. Words are separated by metacharacters,
      // which are the following plus space, tab, and newline: { }
      // | & $ ; < >
      // ...
      
      // A word beginning with # causes that word and all remaining
      // characters on that line to be ignored.

      // which means that only a '#' after /(?:^|[{}|&$;<>\s])/ starts a
      // comment but empirically
      // $ echo {#}
      // {#}
      // $ echo \$#
      // $#
      // $ echo }#
      // }#

      // so /(?:^|[|&;<>\s])/ is more appropriate.

      // http://gcc.gnu.org/onlinedocs/gcc-2.95.3/cpp_1.html#SEC3
      // suggests that this definition is compatible with a
      // default mode that tries to use a single token definition
      // to recognize both bash/python style comments and C
      // preprocessor directives.

      // This definition of punctuation does not include # in the list of
      // follow-on exclusions, so # will not be broken before if preceeded
      // by a punctuation character.  We could try to exclude # after
      // [|&;<>] but that doesn't seem to cause many major problems.
      // If that does turn out to be a problem, we should change the below
      // when hc is truthy to include # in the run of punctuation characters
      // only when not followint [|&;<>].
      /^.[^\s\w\.$@\'\"\`\/\\]*/;

    fallthroughStylePatterns.push(
        // TODO(mikesamuel): recognize non-latin letters and numerals in idents
        [PR_LITERAL,     /^@[a-z_$][a-z_$@0-9]*/i, null],
        [PR_TYPE,        /^(?:[@_]?[A-Z]+[a-z][A-Za-z_$@0-9]*|\w+_t\b)/, null],
        [PR_PLAIN,       /^[a-z_$][a-z_$@0-9]*/i, null],
        [PR_LITERAL,
         new RegExp(
             '^(?:'
             // A hex number
             + '0x[a-f0-9]+'
             // or an octal or decimal number,
             + '|(?:\\d(?:_\\d+)*\\d*(?:\\.\\d*)?|\\.\\d\\+)'
             // possibly in scientific notation
             + '(?:e[+\\-]?\\d+)?'
             + ')'
             // with an optional modifier like UL for unsigned long
             + '[a-z]*', 'i'),
         null, '0123456789'],
        // Don't treat escaped quotes in bash as starting strings.  See issue 144.
        [PR_PLAIN,       /^\\[\s\S]?/, null],
        [PR_PUNCTUATION, punctuation, null]);

    return createSimpleLexer(shortcutStylePatterns, fallthroughStylePatterns);
  }

  var decorateSource = sourceDecorator({
        'keywords': ALL_KEYWORDS,
        'hashComments': true,
        'cStyleComments': true,
        'multiLineStrings': true,
        'regexLiterals': true
      });

  /**
   * Given a DOM subtree, wraps it in a list, and puts each line into its own
   * list item.
   *
   * @param {Node} node modified in place.  Its content is pulled into an
   *     HTMLOListElement, and each line is moved into a separate list item.
   *     This requires cloning elements, so the input might not have unique
   *     IDs after numbering.
   * @param {boolean} isPreformatted true iff white-space in text nodes should
   *     be treated as significant.
   */
  function numberLines(node, opt_startLineNum, isPreformatted) {
    var nocode = /(?:^|\s)nocode(?:\s|$)/;
    var lineBreak = /\r\n?|\n/;
  
    var document = node.ownerDocument;
  
    var li = document.createElement('li');
    while (node.firstChild) {
      li.appendChild(node.firstChild);
    }
    // An array of lines.  We split below, so this is initialized to one
    // un-split line.
    var listItems = [li];
  
    function walk(node) {
      switch (node.nodeType) {
        case 1:  // Element
          if (nocode.test(node.className)) { break; }
          if ('br' === node.nodeName) {
            breakAfter(node);
            // Discard the <BR> since it is now flush against a </LI>.
            if (node.parentNode) {
              node.parentNode.removeChild(node);
            }
          } else {
            for (var child = node.firstChild; child; child = child.nextSibling) {
              walk(child);
            }
          }
          break;
        case 3: case 4:  // Text
          if (isPreformatted) {
            var text = node.nodeValue;
            var match = text.match(lineBreak);
            if (match) {
              var firstLine = text.substring(0, match.index);
              node.nodeValue = firstLine;
              var tail = text.substring(match.index + match[0].length);
              if (tail) {
                var parent = node.parentNode;
                parent.insertBefore(
                    document.createTextNode(tail), node.nextSibling);
              }
              breakAfter(node);
              if (!firstLine) {
                // Don't leave blank text nodes in the DOM.
                node.parentNode.removeChild(node);
              }
            }
          }
          break;
      }
    }
  
    // Split a line after the given node.
    function breakAfter(lineEndNode) {
      // If there's nothing to the right, then we can skip ending the line
      // here, and move root-wards since splitting just before an end-tag
      // would require us to create a bunch of empty copies.
      while (!lineEndNode.nextSibling) {
        lineEndNode = lineEndNode.parentNode;
        if (!lineEndNode) { return; }
      }
  
      function breakLeftOf(limit, copy) {
        // Clone shallowly if this node needs to be on both sides of the break.
        var rightSide = copy ? limit.cloneNode(false) : limit;
        var parent = limit.parentNode;
        if (parent) {
          // We clone the parent chain.
          // This helps us resurrect important styling elements that cross lines.
          // E.g. in <i>Foo<br>Bar</i>
          // should be rewritten to <li><i>Foo</i></li><li><i>Bar</i></li>.
          var parentClone = breakLeftOf(parent, 1);
          // Move the clone and everything to the right of the original
          // onto the cloned parent.
          var next = limit.nextSibling;
          parentClone.appendChild(rightSide);
          for (var sibling = next; sibling; sibling = next) {
            next = sibling.nextSibling;
            parentClone.appendChild(sibling);
          }
        }
        return rightSide;
      }
  
      var copiedListItem = breakLeftOf(lineEndNode.nextSibling, 0);
  
      // Walk the parent chain until we reach an unattached LI.
      for (var parent;
           // Check nodeType since IE invents document fragments.
           (parent = copiedListItem.parentNode) && parent.nodeType === 1;) {
        copiedListItem = parent;
      }
      // Put it on the list of lines for later processing.
      listItems.push(copiedListItem);
    }
  
    // Split lines while there are lines left to split.
    for (var i = 0;  // Number of lines that have been split so far.
         i < listItems.length;  // length updated by breakAfter calls.
         ++i) {
      walk(listItems[i]);
    }
  
    // Make sure numeric indices show correctly.
    if (opt_startLineNum === (opt_startLineNum|0)) {
      listItems[0].setAttribute('value', opt_startLineNum);
    }
  
    var ol = document.createElement('ol');
    ol.className = 'linenums';
    var offset = Math.max(0, ((opt_startLineNum - 1 /* zero index */)) | 0) || 0;
    for (var i = 0, n = listItems.length; i < n; ++i) {
      li = listItems[i];
      // Stick a class on the LIs so that stylesheets can
      // color odd/even rows, or any other row pattern that
      // is co-prime with 10.
      li.className = 'L' + ((i + offset) % 10);
      if (!li.firstChild) {
        li.appendChild(document.createTextNode('\xA0'));
      }
      ol.appendChild(li);
    }
  
    node.appendChild(ol);
  }

  /**
   * Breaks {@code job.sourceCode} around style boundaries in
   * {@code job.decorations} and modifies {@code job.sourceNode} in place.
   * @param {Object} job like <pre>{
   *    sourceCode: {string} source as plain text,
   *    spans: {Array.<number|Node>} alternating span start indices into source
   *       and the text node or element (e.g. {@code <BR>}) corresponding to that
   *       span.
   *    decorations: {Array.<number|string} an array of style classes preceded
   *       by the position at which they start in job.sourceCode in order
   * }</pre>
   * @private
   */
  function recombineTagsAndDecorations(job) {
    var isIE8OrEarlier = /\bMSIE\s(\d+)/.exec(navigator.userAgent);
    isIE8OrEarlier = isIE8OrEarlier && +isIE8OrEarlier[1] <= 8;
    var newlineRe = /\n/g;
  
    var source = job.sourceCode;
    var sourceLength = source.length;
    // Index into source after the last code-unit recombined.
    var sourceIndex = 0;
  
    var spans = job.spans;
    var nSpans = spans.length;
    // Index into spans after the last span which ends at or before sourceIndex.
    var spanIndex = 0;
  
    var decorations = job.decorations;
    var nDecorations = decorations.length;
    // Index into decorations after the last decoration which ends at or before
    // sourceIndex.
    var decorationIndex = 0;
  
    // Remove all zero-length decorations.
    decorations[nDecorations] = sourceLength;
    var decPos, i;
    for (i = decPos = 0; i < nDecorations;) {
      if (decorations[i] !== decorations[i + 2]) {
        decorations[decPos++] = decorations[i++];
        decorations[decPos++] = decorations[i++];
      } else {
        i += 2;
      }
    }
    nDecorations = decPos;
  
    // Simplify decorations.
    for (i = decPos = 0; i < nDecorations;) {
      var startPos = decorations[i];
      // Conflate all adjacent decorations that use the same style.
      var startDec = decorations[i + 1];
      var end = i + 2;
      while (end + 2 <= nDecorations && decorations[end + 1] === startDec) {
        end += 2;
      }
      decorations[decPos++] = startPos;
      decorations[decPos++] = startDec;
      i = end;
    }
  
    nDecorations = decorations.length = decPos;
  
    var sourceNode = job.sourceNode;
    var oldDisplay;
    if (sourceNode) {
      oldDisplay = sourceNode.style.display;
      sourceNode.style.display = 'none';
    }
    try {
      var decoration = null;
      while (spanIndex < nSpans) {
        var spanStart = spans[spanIndex];
        var spanEnd = spans[spanIndex + 2] || sourceLength;
  
        var decEnd = decorations[decorationIndex + 2] || sourceLength;
  
        var end = Math.min(spanEnd, decEnd);
  
        var textNode = spans[spanIndex + 1];
        var styledText;
        if (textNode.nodeType !== 1  // Don't muck with <BR>s or <LI>s
            // Don't introduce spans around empty text nodes.
            && (styledText = source.substring(sourceIndex, end))) {
          // This may seem bizarre, and it is.  Emitting LF on IE causes the
          // code to display with spaces instead of line breaks.
          // Emitting Windows standard issue linebreaks (CRLF) causes a blank
          // space to appear at the beginning of every line but the first.
          // Emitting an old Mac OS 9 line separator makes everything spiffy.
          if (isIE8OrEarlier) {
            styledText = styledText.replace(newlineRe, '\r');
          }
          textNode.nodeValue = styledText;
          var document = textNode.ownerDocument;
          var span = document.createElement('span');
          span.className = decorations[decorationIndex + 1];
          var parentNode = textNode.parentNode;
          parentNode.replaceChild(span, textNode);
          span.appendChild(textNode);
          if (sourceIndex < spanEnd) {  // Split off a text node.
            spans[spanIndex + 1] = textNode
                // TODO: Possibly optimize by using '' if there's no flicker.
                = document.createTextNode(source.substring(end, spanEnd));
            parentNode.insertBefore(textNode, span.nextSibling);
          }
        }
  
        sourceIndex = end;
  
        if (sourceIndex >= spanEnd) {
          spanIndex += 2;
        }
        if (sourceIndex >= decEnd) {
          decorationIndex += 2;
        }
      }
    } finally {
      if (sourceNode) {
        sourceNode.style.display = oldDisplay;
      }
    }
  }


  /** Maps language-specific file extensions to handlers. */
  var langHandlerRegistry = {};
  /** Register a language handler for the given file extensions.
    * @param {function (Object)} handler a function from source code to a list
    *      of decorations.  Takes a single argument job which describes the
    *      state of the computation.   The single parameter has the form
    *      {@code {
    *        sourceCode: {string} as plain text.
    *        decorations: {Array.<number|string>} an array of style classes
    *                     preceded by the position at which they start in
    *                     job.sourceCode in order.
    *                     The language handler should assigned this field.
    *        basePos: {int} the position of source in the larger source chunk.
    *                 All positions in the output decorations array are relative
    *                 to the larger source chunk.
    *      } }
    * @param {Array.<string>} fileExtensions
    */
  function registerLangHandler(handler, fileExtensions) {
    for (var i = fileExtensions.length; --i >= 0;) {
      var ext = fileExtensions[i];
      if (!langHandlerRegistry.hasOwnProperty(ext)) {
        langHandlerRegistry[ext] = handler;
      } else if (win['console']) {
        console['warn']('cannot override language handler %s', ext);
      }
    }
  }
  function langHandlerForExtension(extension, source) {
    if (!(extension && langHandlerRegistry.hasOwnProperty(extension))) {
      // Treat it as markup if the first non whitespace character is a < and
      // the last non-whitespace character is a >.
      extension = /^\s*</.test(source)
          ? 'default-markup'
          : 'default-code';
    }
    return langHandlerRegistry[extension];
  }
  registerLangHandler(decorateSource, ['default-code']);
  registerLangHandler(
      createSimpleLexer(
          [],
          [
           [PR_PLAIN,       /^[^<?]+/],
           [PR_DECLARATION, /^<!\w[^>]*(?:>|$)/],
           [PR_COMMENT,     /^<\!--[\s\S]*?(?:-\->|$)/],
           // Unescaped content in an unknown language
           ['lang-',        /^<\?([\s\S]+?)(?:\?>|$)/],
           ['lang-',        /^<%([\s\S]+?)(?:%>|$)/],
           [PR_PUNCTUATION, /^(?:<[%?]|[%?]>)/],
           ['lang-',        /^<xmp\b[^>]*>([\s\S]+?)<\/xmp\b[^>]*>/i],
           // Unescaped content in javascript.  (Or possibly vbscript).
           ['lang-js',      /^<script\b[^>]*>([\s\S]*?)(<\/script\b[^>]*>)/i],
           // Contains unescaped stylesheet content
           ['lang-css',     /^<style\b[^>]*>([\s\S]*?)(<\/style\b[^>]*>)/i],
           ['lang-in.tag',  /^(<\/?[a-z][^<>]*>)/i]
          ]),
      ['default-markup', 'htm', 'html', 'mxml', 'xhtml', 'xml', 'xsl']);
  registerLangHandler(
      createSimpleLexer(
          [
           [PR_PLAIN,        /^[\s]+/, null, ' \t\r\n'],
           [PR_ATTRIB_VALUE, /^(?:\"[^\"]*\"?|\'[^\']*\'?)/, null, '\"\'']
           ],
          [
           [PR_TAG,          /^^<\/?[a-z](?:[\w.:-]*\w)?|\/?>$/i],
           [PR_ATTRIB_NAME,  /^(?!style[\s=]|on)[a-z](?:[\w:-]*\w)?/i],
           ['lang-uq.val',   /^=\s*([^>\'\"\s]*(?:[^>\'\"\s\/]|\/(?=\s)))/],
           [PR_PUNCTUATION,  /^[=<>\/]+/],
           ['lang-js',       /^on\w+\s*=\s*\"([^\"]+)\"/i],
           ['lang-js',       /^on\w+\s*=\s*\'([^\']+)\'/i],
           ['lang-js',       /^on\w+\s*=\s*([^\"\'>\s]+)/i],
           ['lang-css',      /^style\s*=\s*\"([^\"]+)\"/i],
           ['lang-css',      /^style\s*=\s*\'([^\']+)\'/i],
           ['lang-css',      /^style\s*=\s*([^\"\'>\s]+)/i]
           ]),
      ['in.tag']);
  registerLangHandler(
      createSimpleLexer([], [[PR_ATTRIB_VALUE, /^[\s\S]+/]]), ['uq.val']);
  registerLangHandler(sourceDecorator({
          'keywords': CPP_KEYWORDS,
          'hashComments': true,
          'cStyleComments': true,
          'types': C_TYPES
        }), ['c', 'cc', 'cpp', 'cxx', 'cyc', 'm']);
  registerLangHandler(sourceDecorator({
          'keywords': 'null,true,false'
        }), ['json']);
  registerLangHandler(sourceDecorator({
          'keywords': CSHARP_KEYWORDS,
          'hashComments': true,
          'cStyleComments': true,
          'verbatimStrings': true,
          'types': C_TYPES
        }), ['cs']);
  registerLangHandler(sourceDecorator({
          'keywords': JAVA_KEYWORDS,
          'cStyleComments': true
        }), ['java']);
  registerLangHandler(sourceDecorator({
          'keywords': SH_KEYWORDS,
          'hashComments': true,
          'multiLineStrings': true
        }), ['bsh', 'csh', 'sh']);
  registerLangHandler(sourceDecorator({
          'keywords': PYTHON_KEYWORDS,
          'hashComments': true,
          'multiLineStrings': true,
          'tripleQuotedStrings': true
        }), ['cv', 'py']);
  registerLangHandler(sourceDecorator({
          'keywords': PERL_KEYWORDS,
          'hashComments': true,
          'multiLineStrings': true,
          'regexLiterals': true
        }), ['perl', 'pl', 'pm']);
  registerLangHandler(sourceDecorator({
          'keywords': RUBY_KEYWORDS,
          'hashComments': true,
          'multiLineStrings': true,
          'regexLiterals': true
        }), ['rb']);
  registerLangHandler(sourceDecorator({
          'keywords': JSCRIPT_KEYWORDS,
          'cStyleComments': true,
          'regexLiterals': true
        }), ['js']);
  registerLangHandler(sourceDecorator({
          'keywords': COFFEE_KEYWORDS,
          'hashComments': 3,  // ### style block comments
          'cStyleComments': true,
          'multilineStrings': true,
          'tripleQuotedStrings': true,
          'regexLiterals': true
        }), ['coffee']);
  registerLangHandler(
      createSimpleLexer([], [[PR_STRING, /^[\s\S]+/]]), ['regex']);

  function applyDecorator(job) {
    var opt_langExtension = job.langExtension;

    try {
      // Extract tags, and convert the source code to plain text.
      var sourceAndSpans = extractSourceSpans(job.sourceNode, job.pre);
      /** Plain text. @type {string} */
      var source = sourceAndSpans.sourceCode;
      job.sourceCode = source;
      job.spans = sourceAndSpans.spans;
      job.basePos = 0;

      // Apply the appropriate language handler
      langHandlerForExtension(opt_langExtension, source)(job);

      // Integrate the decorations and tags back into the source code,
      // modifying the sourceNode in place.
      recombineTagsAndDecorations(job);
    } catch (e) {
      if (win['console']) {
        console['log'](e && e['stack'] ? e['stack'] : e);
      }
    }
  }

  /**
   * @param sourceCodeHtml {string} The HTML to pretty print.
   * @param opt_langExtension {string} The language name to use.
   *     Typically, a filename extension like 'cpp' or 'java'.
   * @param opt_numberLines {number|boolean} True to number lines,
   *     or the 1-indexed number of the first line in sourceCodeHtml.
   */
  function prettyPrintOne(sourceCodeHtml, opt_langExtension, opt_numberLines) {
    var container = document.createElement('pre');
    // This could cause images to load and onload listeners to fire.
    // E.g. <img onerror="alert(1337)" src="nosuchimage.png">.
    // We assume that the inner HTML is from a trusted source.
    container.innerHTML = sourceCodeHtml;
    if (opt_numberLines) {
      numberLines(container, opt_numberLines, true);
    }

    var job = {
      langExtension: opt_langExtension,
      numberLines: opt_numberLines,
      sourceNode: container,
      pre: 1
    };
    applyDecorator(job);
    return container.innerHTML;
  }

  function prettyPrint(opt_whenDone) {
    function byTagName(tn) { return document.getElementsByTagName(tn); }
    // fetch a list of nodes to rewrite
    var codeSegments = [byTagName('pre'), byTagName('code'), byTagName('xmp')];
    var elements = [];
    for (var i = 0; i < codeSegments.length; ++i) {
      for (var j = 0, n = codeSegments[i].length; j < n; ++j) {
        elements.push(codeSegments[i][j]);
      }
    }
    codeSegments = null;

    var clock = Date;
    if (!clock['now']) {
      clock = { 'now': function () { return +(new Date); } };
    }

    // The loop is broken into a series of continuations to make sure that we
    // don't make the browser unresponsive when rewriting a large page.
    var k = 0;
    var prettyPrintingJob;

    var langExtensionRe = /\blang(?:uage)?-([\w.]+)(?!\S)/;
    var prettyPrintRe = /\bprettyprint\b/;
    var prettyPrintedRe = /\bprettyprinted\b/;
    var preformattedTagNameRe = /pre|xmp/i;
    var codeRe = /^code$/i;
    var preCodeXmpRe = /^(?:pre|code|xmp)$/i;

    function doWork() {
      var endTime = (win['PR_SHOULD_USE_CONTINUATION'] ?
                     clock['now']() + 250 /* ms */ :
                     Infinity);
      for (; k < elements.length && clock['now']() < endTime; k++) {
        var cs = elements[k];
        var className = cs.className;
        if (prettyPrintRe.test(className)
            // Don't redo this if we've already done it.
            // This allows recalling pretty print to just prettyprint elements
            // that have been added to the page since last call.
            && !prettyPrintedRe.test(className)) {

          // make sure this is not nested in an already prettified element
          var nested = false;
          for (var p = cs.parentNode; p; p = p.parentNode) {
            var tn = p.tagName;
            if (preCodeXmpRe.test(tn)
                && p.className && prettyPrintRe.test(p.className)) {
              nested = true;
              break;
            }
          }
          if (!nested) {
            // Mark done.  If we fail to prettyprint for whatever reason,
            // we shouldn't try again.
            cs.className += ' prettyprinted';

            // If the classes includes a language extensions, use it.
            // Language extensions can be specified like
            //     <pre class="prettyprint lang-cpp">
            // the language extension "cpp" is used to find a language handler
            // as passed to PR.registerLangHandler.
            // HTML5 recommends that a language be specified using "language-"
            // as the prefix instead.  Google Code Prettify supports both.
            // http://dev.w3.org/html5/spec-author-view/the-code-element.html
            var langExtension = className.match(langExtensionRe);
            // Support <pre class="prettyprint"><code class="language-c">
            var wrapper;
            if (!langExtension && (wrapper = childContentWrapper(cs))
                && codeRe.test(wrapper.tagName)) {
              langExtension = wrapper.className.match(langExtensionRe);
            }

            if (langExtension) { langExtension = langExtension[1]; }

            var preformatted;
            if (preformattedTagNameRe.test(cs.tagName)) {
              preformatted = 1;
            } else {
              var currentStyle = cs['currentStyle'];
              var whitespace = (
                  currentStyle
                  ? currentStyle['whiteSpace']
                  : (document.defaultView
                     && document.defaultView.getComputedStyle)
                  ? document.defaultView.getComputedStyle(cs, null)
                  .getPropertyValue('white-space')
                  : 0);
              preformatted = whitespace
                  && 'pre' === whitespace.substring(0, 3);
            }

            // Look for a class like linenums or linenums:<n> where <n> is the
            // 1-indexed number of the first line.
            var lineNums = cs.className.match(/\blinenums\b(?::(\d+))?/);
            lineNums = lineNums
                ? lineNums[1] && lineNums[1].length ? +lineNums[1] : true
                : false;
            if (lineNums) { numberLines(cs, lineNums, preformatted); }

            // do the pretty printing
            prettyPrintingJob = {
              langExtension: langExtension,
              sourceNode: cs,
              numberLines: lineNums,
              pre: preformatted
            };
            applyDecorator(prettyPrintingJob);
          }
        }
      }
      if (k < elements.length) {
        // finish up in a continuation
        setTimeout(doWork, 250);
      } else if (opt_whenDone) {
        opt_whenDone();
      }
    }

    doWork();
  }

  /**
   * Contains functions for creating and registering new language handlers.
   * @type {Object}
   */
  var PR = win['PR'] = {
        'createSimpleLexer': createSimpleLexer,
        'registerLangHandler': registerLangHandler,
        'sourceDecorator': sourceDecorator,
        'PR_ATTRIB_NAME': PR_ATTRIB_NAME,
        'PR_ATTRIB_VALUE': PR_ATTRIB_VALUE,
        'PR_COMMENT': PR_COMMENT,
        'PR_DECLARATION': PR_DECLARATION,
        'PR_KEYWORD': PR_KEYWORD,
        'PR_LITERAL': PR_LITERAL,
        'PR_NOCODE': PR_NOCODE,
        'PR_PLAIN': PR_PLAIN,
        'PR_PUNCTUATION': PR_PUNCTUATION,
        'PR_SOURCE': PR_SOURCE,
        'PR_STRING': PR_STRING,
        'PR_TAG': PR_TAG,
        'PR_TYPE': PR_TYPE,
        'prettyPrintOne': win['prettyPrintOne'] = prettyPrintOne,
        'prettyPrint': win['prettyPrint'] = prettyPrint
      };

  // Make PR available via the Asynchronous Module Definition (AMD) API.
  // Per https://github.com/amdjs/amdjs-api/wiki/AMD:
  // The Asynchronous Module Definition (AMD) API specifies a
  // mechanism for defining modules such that the module and its
  // dependencies can be asynchronously loaded.
  // ...
  // To allow a clear indicator that a global define function (as
  // needed for script src browser loading) conforms to the AMD API,
  // any global define function SHOULD have a property called "amd"
  // whose value is an object. This helps avoid conflict with any
  // other existing JavaScript code that could have defined a define()
  // function that does not conform to the AMD API.
  if (typeof define === "function" && define['amd']) {
    define(function () {
      return PR; 
    });
  }
})();
</script>

<script>(function(scope) {
  
  var ContextFreeParser = {
    parse: function(text) {
      var top = {};
      var entities = [];
      var current = top;
      var subCurrent = {};
  
      var scriptDocCommentClause = '\\/\\*\\*([\\s\\S]*?)\\*\\/';
      var htmlDocCommentClause = '<!--([\\s\\S]*?)-->';
  
      // matches text between /** and */ inclusive and <!-- and --> inclusive
      var docCommentRegex = new RegExp(scriptDocCommentClause + '|' + htmlDocCommentClause, 'g');
  
      // acquire all script doc comments
      var docComments = text.match(docCommentRegex) || [];
  
      // each match represents a single block of doc comments
      docComments.forEach(function(m) {
        // unify line ends, remove all comment characters, split into individual lines
        var lines = m.replace(/\r\n/g, '\n').replace(/^\s*\/\*\*|^\s*\*\/|^\s*\* ?|^\s*\<\!-\-|^s*\-\-\>/gm, '').split('\n');
  
        // pragmas (@-rules) must occur on a line by themselves
        var pragmas = [];
        // filter lines whose first non-whitespace character is @ into the pragma list
        // (and out of the `lines` array)
        lines = lines.filter(function(l) {
          var m = l.match(/\s*@([\w-]*) (.*)/);
          if (!m) {
            return true;
          }
          pragmas.push(m);
        });
  
        // collect all other text into a single block
        var code = lines.join('\n');
        
        // process pragmas
        pragmas.forEach(function(m) {
          var pragma = m[1], content = m[2];
          switch (pragma) {
  
            // currently all entities are either @class or @element
            case 'class':
            case 'element':
              current = {
                name: content,
                description: code
              };
              entities.push(current);
              break;
            
            // an entity may have these describable sub-features
            case 'attribute':
            case 'property':
            case 'method':
            case 'event':
              subCurrent = {
                name: content,
                description: code
              };
              var label = pragma == 'property' ? 'properties' : pragma + 's';
              makePragma(current, label, subCurrent);
              break;
  
            // sub-feature pragmas
            case 'default':
            case 'type':
              subCurrent[pragma] = content;
              break;
  
            // everything else
            default:
              current[pragma] = content;
              break;
          }
        });
  
        // utility function, yay hoisting
        function makePragma(object, pragma, content) {
          var p$ = object;
          var p = p$[pragma];
          if (!p) {
            p$[pragma] = p = [];
          }
          p.push(content);
        }
  
      });
  
      if (entities.length === 0) {
        entities.push({name: 'Entity', description: '**Undocumented**'});
      }
      return entities;
    }
  };
  
  if (typeof module !== 'undefined' && module.exports) {
    module.exports = ContextFreeParser;
  } else {
    scope.ContextFreeParser = ContextFreeParser;
  }
  
})(this);</script>
<!--
Copyright (c) 2014 The Polymer Project Authors. All rights reserved.
This code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt
The complete set of authors may be found at http://polymer.github.io/AUTHORS.txt
The complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt
Code distributed by Google as part of the polymer project is also
subject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt
-->

<!--
@group Polymer Core Elements

The `core-ajax` element exposes `XMLHttpRequest` functionality.

    <core-ajax
        auto
        url="http://gdata.youtube.com/feeds/api/videos/"
        params='{"alt":"json", "q":"chrome"}'
        handleAs="json"
        on-core-response="{{handleResponse}}"></core-ajax>
 
With `auto` set to `true`, the element performs a request whenever
its `url` or `params` properties are changed.

Note: The `params` attribute must be double quoted JSON.

You can trigger a request explicitly by calling `go` on the
element.

@element core-ajax
@status beta
@homepage github.io
-->
<!--
Copyright (c) 2014 The Polymer Project Authors. All rights reserved.
This code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt
The complete set of authors may be found at http://polymer.github.io/AUTHORS.txt
The complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt
Code distributed by Google as part of the polymer project is also
subject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt
-->
<!--
/**
 * @group Polymer Core Elements
 *
 * core-xhr can be used to perform XMLHttpRequests.
 *
 *     <core-xhr id="xhr"></core-xhr>
 *     ...
 *     this.$.xhr.request({url: url, params: params, callback: callback});
 *
 * @element core-xhr
 */
-->



<polymer-element name="core-xhr" hidden assetpath="../core-ajax/">

  <script>

    Polymer('core-xhr', {

      /**
       * Sends a HTTP request to the server and returns the XHR object.
       *
       * @method request
       * @param {Object} inOptions
       *    @param {String} inOptions.url The url to which the request is sent.
       *    @param {String} inOptions.method The HTTP method to use, default is GET.
       *    @param {boolean} inOptions.sync By default, all requests are sent asynchronously. To send synchronous requests, set to true.
       *    @param {Object} inOptions.params Data to be sent to the server.
       *    @param {Object} inOptions.body The content for the request body for POST method.
       *    @param {Object} inOptions.headers HTTP request headers.
       *    @param {String} inOptions.responseType The response type. Default is 'text'.
       *    @param {boolean} inOptions.withCredentials Whether or not to send credentials on the request. Default is false.
       *    @param {Object} inOptions.callback Called when request is completed.
       * @returns {Object} XHR object.
       */
      request: function(options) {
        var xhr = new XMLHttpRequest();
        var url = options.url;
        var method = options.method || 'GET';
        var async = !options.sync;
        //
        var params = this.toQueryString(options.params);
        if (params && method == 'GET') {
          url += (url.indexOf('?') > 0 ? '&' : '?') + params;
        }
        var xhrParams = this.isBodyMethod(method) ? (options.body || params) : null;
        //
        xhr.open(method, url, async);
        if (options.responseType) {
          xhr.responseType = options.responseType;
        }
        if (options.withCredentials) {
          xhr.withCredentials = true;
        }
        this.makeReadyStateHandler(xhr, options.callback);
        this.setRequestHeaders(xhr, options.headers);
        xhr.send(xhrParams);
        if (!async) {
          xhr.onreadystatechange(xhr);
        }
        return xhr;
      },
    
      toQueryString: function(params) {
        var r = [];
        for (var n in params) {
          var v = params[n];
          n = encodeURIComponent(n);
          r.push(v == null ? n : (n + '=' + encodeURIComponent(v)));
        }
        return r.join('&');
      },

      isBodyMethod: function(method) {
        return this.bodyMethods[(method || '').toUpperCase()];
      },
      
      bodyMethods: {
        POST: 1,
        PUT: 1,
        DELETE: 1
      },

      makeReadyStateHandler: function(xhr, callback) {
        xhr.onreadystatechange = function() {
          if (xhr.readyState == 4) {
            callback && callback.call(null, xhr.response, xhr);
          }
        };
      },

      setRequestHeaders: function(xhr, headers) {
        if (headers) {
          for (var name in headers) {
            xhr.setRequestHeader(name, headers[name]);
          }
        }
      }

    });

  </script>
  
</polymer-element>

<polymer-element name="core-ajax" attributes="url handleAs auto params response method headers body contentType withCredentials" assetpath="../core-ajax/">
<script>

  Polymer('core-ajax', {
    /**
     * Fired when a response is received.
     * 
     * @event core-response
     */

    /**
     * Fired when an error is received.
     * 
     * @event core-error
     */

    /**
     * Fired whenever a response or an error is received.
     *
     * @event core-complete
     */

    /**
     * The URL target of the request.
     * 
     * @attribute url
     * @type string
     * @default ''
     */
    url: '',

    /**
     * Specifies what data to store in the `response` property, and
     * to deliver as `event.response` in `response` events.
     * 
     * One of:
     * 
     *    `text`: uses `XHR.responseText`.
     *    
     *    `xml`: uses `XHR.responseXML`.
     *    
     *    `json`: uses `XHR.responseText` parsed as JSON.
     *
     *    `arraybuffer`: uses `XHR.response`.
     *
     *    `blob`: uses `XHR.response`.
     *
     *    `document`: uses `XHR.response`.
     *  
     * @attribute handleAs
     * @type string
     * @default 'text'
     */
    handleAs: '',

    /**
     * If true, automatically performs an Ajax request when either `url` or `params` changes.
     *
     * @attribute auto
     * @type boolean
     * @default false
     */
    auto: false,

    /**
     * Parameters to send to the specified URL, as JSON.
     *  
     * @attribute params
     * @type string (JSON)
     * @default ''
     */
    params: '',

    /**
     * Returns the response object.
     *
     * @attribute response
     * @type Object
     * @default null
     */
    response: null,

    /**
     * The HTTP method to use such as 'GET', 'POST', 'PUT', or 'DELETE'.
     * Default is 'GET'.
     *
     * @attribute method
     * @type string
     * @default ''
     */
    method: '',

    /**
     * HTTP request headers to send.
     *
     * Example:
     *
     *     <core-ajax 
     *         auto
     *         url="http://somesite.com"
     *         headers='{"X-Requested-With": "XMLHttpRequest"}'
     *         handleAs="json"
     *         on-core-response="{{handleResponse}}"></core-ajax>
     *  
     * @attribute headers
     * @type Object
     * @default null
     */
    headers: null,

    /**
     * Optional raw body content to send when method === "POST".
     *
     * Example:
     *
     *     <core-ajax method="POST" auto url="http://somesite.com"
     *         body='{"foo":1, "bar":2}'>
     *     </core-ajax>
     *  
     * @attribute body
     * @type Object
     * @default null
     */
    body: null,

    /**
     * Content type to use when sending data.
     *
     * @attribute contentType
     * @type string
     * @default 'application/x-www-form-urlencoded'
     */
    contentType: 'application/x-www-form-urlencoded',

    /**
     * Set the withCredentials flag on the request.
     * 
     * @attribute withCredentials
     * @type boolean
     * @default false
     */
    withCredentials: false,
    
    /**
     * Additional properties to send to core-xhr.
     *
     * Can be set to an object containing default properties
     * to send as arguments to the `core-xhr.request()` method
     * which implements the low-level communication.
     * 
     * @property xhrArgs
     * @type Object
     * @default null
     */
    xhrArgs: null,
     
    ready: function() {
      this.xhr = document.createElement('core-xhr');
    },

    receive: function(response, xhr) {
      if (this.isSuccess(xhr)) {
        this.processResponse(xhr);
      } else {
        this.error(xhr);
      }
      this.complete(xhr);
    },

    isSuccess: function(xhr) {
      var status = xhr.status || 0;
      return !status || (status >= 200 && status < 300);
    },

    processResponse: function(xhr) {
      var response = this.evalResponse(xhr);
      this.response = response;
      this.fire('core-response', {response: response, xhr: xhr});
    },

    error: function(xhr) {
      var response = xhr.status + ': ' + xhr.responseText;
      this.fire('core-error', {response: response, xhr: xhr});
    },

    complete: function(xhr) {
      this.fire('core-complete', {response: xhr.status, xhr: xhr});
    },

    evalResponse: function(xhr) {
      return this[(this.handleAs || 'text') + 'Handler'](xhr);
    },

    xmlHandler: function(xhr) {
      return xhr.responseXML;
    },

    textHandler: function(xhr) {
      return xhr.responseText;
    },

    jsonHandler: function(xhr) {
      var r = xhr.responseText;
      try {
        return JSON.parse(r);
      } catch (x) {
        return r;
      }
    },

    documentHandler: function(xhr) {
      return xhr.response;
    },

    blobHandler: function(xhr) {
      return xhr.response;
    },

    arraybufferHandler: function(xhr) {
      return xhr.response;
    },

    urlChanged: function() {
      if (!this.handleAs) {
        var ext = String(this.url).split('.').pop();
        switch (ext) {
          case 'json':
            this.handleAs = 'json';
            break;
        }
      }
      this.autoGo();
    },

    paramsChanged: function() {
      this.autoGo();
    },

    autoChanged: function() {
      this.autoGo();
    },

    // TODO(sorvell): multiple side-effects could call autoGo 
    // during one micro-task, use a job to have only one action 
    // occur
    autoGo: function() {
      if (this.auto) {
        this.goJob = this.job(this.goJob, this.go, 0);
      }
    },

    /**
     * Performs an Ajax request to the specified URL.
     *
     * @method go
     */
    go: function() {
      var args = this.xhrArgs || {};
      // TODO(sjmiles): we may want XHR to default to POST if body is set
      args.body = this.body || args.body;
      args.params = this.params || args.params;
      if (args.params && typeof(args.params) == 'string') {
        args.params = JSON.parse(args.params);
      }
      args.headers = this.headers || args.headers || {};
      if (args.headers && typeof(args.headers) == 'string') {
        args.headers = JSON.parse(args.headers);
      }
      if (this.contentType) {
        args.headers['content-type'] = this.contentType;
      }
      if (this.handleAs === 'arraybuffer' || this.handleAs === 'blob' ||
          this.handleAs === 'document') {
        args.responseType = this.handleAs;
      }
      args.withCredentials = this.withCredentials;
      args.callback = this.receive.bind(this);
      args.url = this.url;
      args.method = this.method;
      return args.url && this.xhr.request(args);
    }

  });

</script>
</polymer-element>


<!--
Scrapes source documentation data from input text or url.

@class context-free-parser
-->
<polymer-element name="context-free-parser" attributes="url text data" assetpath="../context-free-parser/">
<template>

  <core-ajax url="{{url}}" response="{{text}}" auto=""></core-ajax>

</template>
<script>

  Polymer('context-free-parser', {

    text: null,

    textChanged: function() {
      if (this.text) {
        var entities = ContextFreeParser.parse(this.text);
        if (!entities || entities.length === 0) {
          entities = [
            {name: this.url.split('/').pop(), description: '**Undocumented**'}
          ];
        }
        this.data = { classes: entities };
      }
    },

    dataChanged: function() {
      this.fire('data-ready');
    }

  });

</script>
</polymer-element>


<!--

Displays formatted source documentation scraped from input urls.

@element core-doc-page
-->

<polymer-element name="core-doc-page" attributes="data" assetpath="../core-doc-viewer/elements/">

<!--

Set url to add documentation from that location to the view.

@attribute url
@type String
-->

  <template>

    <style>:host {
  display: block;
  position: relative;
}

#panel {
  position: absolute;
  top: 0;
  left: 0;
  height: 100%;
  width: 100%;
}

.main {
  padding: 0 72px;
  max-width: 832px;
  margin: 0 auto;
}

markedjs-element {
  display: block;
}

h1 {
  font-size: 52px;
  color: #E91E63
}

.element {
  font-size: 21px;
}

.name {
  /* typography */
  color: white;
  /* font-size: 14px; */
  font-size: 12px;
  font-weight: bold;
  text-decoration: none;
  /* colors / effects */
  background-color: #999;
  box-shadow: 0 1px 2px 0px rgba(0, 0, 0, 0.1);
  box-shadow: 0 0 1px 0 rgba(0, 0, 0, 0.1);
  border-radius: 2px;
  cursor: pointer;
  /* metrics */
  display: inline-block;
  padding: 4px 12px 5px 12px;
  margin: 4px 0;
}

.ntitle {
  font-size: 26px;
  padding-bottom: 4px;
  border-bottom: 1px solid whitesmoke;
}

.box {
  margin-bottom: 40px;
}

.top pre {
  padding: 12px 13px;
  background-color: #f8f8f8;
}

code {
  font-family: Consolas, monospace;
  border: 1px solid #ddd;
  background-color: #f8f8f8;
  border-radius: 3px;
  padding: 0 3px;
}

pre code {
  max-width: 832px;
  white-space: pre-wrap;
  overflow: hidden;
  border: none;
}

/**/

.details {
  display: flex;
}

.details-name {
  flex: 1;
}

.details-info {
  flex: 2;
}

.attribute-box {
}

.attribute-box .details {
  background-color: #FFF9C4;
  padding: 8px 16px;
  border-bottom: 1px solid #D1CCA1;
}

.attribute-box .ntitle {
  padding: 24px 16px;
}

.attribute-box code {
  color: #FFAB40;
  border: none;
  background-color: transparent;
  border-radius: none;
  padding: 0;
  font-size: 1.2em;
}

.property-box .ntitle {
  padding: 24px 16px;
}

.property-box code {
  color: #4285F4;
  border: none;
  background-color: transparent;
  border-radius: none;
  padding: 0;
  font-size: 1.2em;
}

.property-box .details {
  background-color: lightblue;
  padding: 8px 16px;
  border-bottom: 1px solid #D1CCA1;
}

.method-box {
}

.method-box .details {
  background-color: #F0F4C3;
  padding: 8px 16px;
  border-bottom: 1px solid #D1CCA1;
}

.method-box .ntitle {
  background-color: #9E9D24;
  padding: 24px 16px;
}

.method-box code {
  color: #9E9D24;
  border: none;
  background-color: transparent;
  border-radius: none;
  padding: 0;
  font-size: 1.2em;
}

.event-box {
}

.event-box .details {
  background-color: #B2DFDB;
  padding: 8px 16px;
  border-bottom: 1px solid #92B7B3;
}

.event-box .ntitle {
  background-color: #009688;
  padding: 24px 16px;
}

.event-box code {
  color: #009688;
  border: none;
  background-color: transparent;
  border-radius: none;
  padding: 0;
  font-size: 1.2em;
}

code, pre {
  color: #9f499b;
  font-family: "Source Code Pro",Monaco,Menlo,Consolas,"Courier New",monospace;
}

pre .typ,pre .inline,.prettyprint .typ,.prettyprint .inline {
    color: #6b499f
}
pre .pun,.prettyprint .pun {
    color: #5c6bc0
}
pre .str,pre .string,.prettyprint .str,.prettyprint .string {
    color: #ff4081
}
pre .pln,.prettyprint .pln {
    color: #7986cb
}
pre .kwd,.prettyprint .kwd {
    color: #d61a7f
}
pre .atn,pre .attribute-name,.prettyprint .atn,.prettyprint .attribute-name {
    color: #6b499f
}
pre .atv,pre .attribute-value,.prettyprint .atv,.prettyprint .attribute-value {
    color: #7986cb
}
pre .com,pre .comment,.prettyprint .com,.prettyprint .comment {
    color: #8a8a8a
}</style>

    <core-header-panel id="panel" mode="waterfall">

      <!--<core-toolbar>
        <span style="margin: 0 72px;">{{data.name}}</span>
      </core-toolbar>-->

      <div class="main" on-marked-js-highlight="{{hilight}}">

        <h1 style="font-size: 52px; color: #E91E63;">
          {{data.name}}
        </h1>

        <p>
          <core-icon icon="home"></core-icon>&nbsp;<a href="{{data | homepageFilter}}">Home Page</a>
        </p>

        <template if="{{data.extends}}">
          <section class="box">
            <div class="ntitle">Extends</div>
            <p><a href="#{{data.extends}}">{{data.extends}}</a></p>
          </section>
        </template>

        <template if="{{data.description}}">
          <section class="box top">
            <div class="ntitle">Summary</div>
            <marked-element text="{{data.description}}"></marked-element>
          </section>
        </template>

        <template if="{{data.attributes.length}}">
          <section class="box attribute-box">
            <div class="ntitle" style="background-color: #FFAB40; color: white;">Attributes</div>
            <template repeat="{{data.attributes}}">
              <div class="details">
                <div class="details-name">
                  <p><code>{{name}}</code></p>
                </div>
                <div class="details-info">
                  <p><code>{{type}}</code></p>
                  <marked-element text="{{description}}"></marked-element>
                </div>
              </div>
            </template>
          </section>
        </template>

        <template if="{{data.properties.length}}">
          <section class="box property-box">
            <div class="ntitle" style="background-color: #4285F4; color: white;">Properties</div>
            <template repeat="{{data.properties}}">
              <div class="details">
                <div class="details-name">
                  <p><code>{{name}}</code></p>
                </div>
                <div class="details-info">
                  <p><code>{{type}}</code></p>
                  <marked-element text="{{description}}"></marked-element>
                </div>
              </div>
            </template>
          </section>
        </template>

        <template if="{{data.events.length}}">
          <section class="box event-box">
            <div class="ntitle" style="color: white;">Events</div>
            <template repeat="{{data.events}}">
              <div class="details">
                <div class="details-name">
                  <p><code>{{name}}</code></p>
                </div>
                <div class="details-info">
                  <marked-element text="{{description}}"></marked-element>
                </div>
              </div>
            </template>
          </section>
        </template>

        <template if="{{data.methods.length}}">
          <section class="box method-box">
            <div class="ntitle" style="color: white;">Methods</div>
            <template repeat="{{data.methods}}">
              <div class="details">
                <div class="details-name">
                  <p><code>{{name}}</code></p>
                </div>
                <div class="details-info">
                  <marked-element text="{{description}}"></marked-element>
                </div>
              </div>
            </template>
          </section>
        </template>

      </div>

    </core-header-panel>

  </template>

  <script>

    Polymer('core-doc-page', {

      hilight: function(event, detail, sender) {
        detail.code = prettyPrintOne((detail.code || '').replace(/</g,'&lt;').replace(/>/g,'&gt;'));
      },

      homepageFilter: function(data) {
        if (!data) {
          return '';
        }
        if (!data.homepage || data.homepage === 'github.io') {
          return '//polymer.github.io/' + data.name;
        } else {
          return data.homepage;
        }
      }

    });

  </script>

</polymer-element>




<!--
Copyright (c) 2014 The Polymer Project Authors. All rights reserved.
This code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt
The complete set of authors may be found at http://polymer.github.io/AUTHORS.txt
The complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt
Code distributed by Google as part of the polymer project is also
subject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt
-->

<!--
`core-menu` is a selector which styles to looks like a menu.

    <core-menu selected="0">
      <core-item icon="settings" label="Settings"></core-item>
      <core-item icon="dialog" label="Dialog"></core-item>
      <core-item icon="search" label="Search"></core-item>
    </core-menu>
    
When an item is selected the `core-selected` class is added to it.  The user can
use the class to add more stylings to the selected item.

    core-item.core-selected {
      color: red;
    }

The `selectedItem` property references the selected item.

    <core-menu selected="0" selectedItem="{{item}}">
      <core-item icon="settings" label="Settings"></core-item>
      <core-item icon="dialog" label="Dialog"></core-item>
      <core-item icon="search" label="Search"></core-item>
    </core-menu>

    <div>selected label: {{item.label}}</div>

The `core-select` event signals selection change.

    <core-menu selected="0" on-core-select="{{selectAction}}">
      <core-item icon="settings" label="Settings"></core-item>
      <core-item icon="dialog" label="Dialog"></core-item>
      <core-item icon="search" label="Search"></core-item>
    </core-menu>

    ...

    selectAction: function(e, detail) {
      if (detail.isSelected) {
        var selectedItem = detail.item;
        ...
      }
    }

@group Polymer Core Elements
@element core-menu
@extends core-selector
-->

<!--
Copyright (c) 2014 The Polymer Project Authors. All rights reserved.
This code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt
The complete set of authors may be found at http://polymer.github.io/AUTHORS.txt
The complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt
Code distributed by Google as part of the polymer project is also
subject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt
-->

<!--
@group Polymer Core Elements

`<core-selector>` is used to manage a list of elements that can be selected.

The attribute `selected` indicates which item element is being selected.
The attribute `multi` indicates if multiple items can be selected at once.
Tapping on the item element would fire `core-activate` event. Use
`core-select` event to listen for selection changes.

Example:

    <core-selector selected="0">
      <div>Item 1</div>
      <div>Item 2</div>
      <div>Item 3</div>
    </core-selector>

`<core-selector>` is not styled. Use the `core-selected` CSS class to style the selected element.

    <style>
      .item.core-selected {
        background: #eee;
      }
    </style>
    ...
    <core-selector>
      <div class="item">Item 1</div>
      <div class="item">Item 2</div>
      <div class="item">Item 3</div>
    </core-selector>

@element core-selector
@status stable
@homepage github.io
-->

<!--
Fired when an item's selection state is changed. This event is fired both
when an item is selected or deselected. The `isSelected` detail property
contains the selection state.

@event core-select
@param {Object} detail
  @param {boolean} detail.isSelected true for selection and false for deselection
  @param {Object} detail.item the item element
-->
<!--
Fired when an item element is tapped.

@event core-activate
@param {Object} detail
  @param {Object} detail.item the item element
-->


<!--
Copyright (c) 2014 The Polymer Project Authors. All rights reserved.
This code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt
The complete set of authors may be found at http://polymer.github.io/AUTHORS.txt
The complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt
Code distributed by Google as part of the polymer project is also
subject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt
-->
<!--
@group Polymer Core Elements

The `<core-selection>` element is used to manage selection state. It has no
visual appearance and is typically used in conjunction with another element.
For example, [core-selector](#core-selector)
use a `<core-selection>` to manage selection.

To mark an item as selected, call the `select(item)` method on 
`<core-selection>`. The item itself is an argument to this method.

The `<core-selection>`element manages selection state for any given set of
items. When an item is selected, the `core-select` event is fired.

The attribute `multi` indicates if multiple items can be selected at once.
  
Example:
 
    <polymer-element name="selection-example">
       <template>
         <style>
           polyfill-next-selector { content: ':host > .selected'; }
           ::content > .selected {
             font-weight: bold;
             font-style: italic;
           }
         </style>
         <ul on-tap="{{itemTapAction}}">
           <content></content>
         </ul>
         <core-selection id="selection" multi
                         on-core-select="{{selectAction}}"></core-selection>
       </template>
       <script>
         Polymer('selection-example', {
           itemTapAction: function(e, detail, sender) {
             this.$.selection.select(e.target);
           },
           selectAction: function(e, detail, sender) {
             detail.item.classList.toggle('selected', detail.isSelected);
           }
         });
       </script>
    </polymer-element>

    <selection-example>
      <li>Red</li>
      <li>Green</li>
      <li>Blue</li>
    </selection-example>
 
@element core-selection
-->

<!--
Fired when an item's selection state is changed. This event is fired both
when an item is selected or deselected. The `isSelected` detail property
contains the selection state.

@event core-select
@param {Object} detail
  @param {boolean} detail.isSelected true for selection and false for de-selection
  @param {Object} detail.item the item element
-->


<polymer-element name="core-selection" attributes="multi" hidden assetpath="../core-selection/">
  <script>
    Polymer('core-selection', {
      /**
       * If true, multiple selections are allowed.
       *
       * @attribute multi
       * @type boolean
       * @default false
       */
      multi: false,
      ready: function() {
        this.clear();
      },
      clear: function() {
        this.selection = [];
      },
      /**
       * Retrieves the selected item(s).
       * @method getSelection
       * @returns Returns the selected item(s). If the multi property is true,
       * getSelection will return an array, otherwise it will return 
       * the selected item or undefined if there is no selection.
      */
      getSelection: function() {
        return this.multi ? this.selection : this.selection[0];
      },
      /**
       * Indicates if a given item is selected.
       * @method isSelected
       * @param {any} item The item whose selection state should be checked.
       * @returns Returns true if `item` is selected.
      */
      isSelected: function(item) {
        return this.selection.indexOf(item) >= 0;
      },
      setItemSelected: function(item, isSelected) {
        if (item !== undefined && item !== null) {
          if (isSelected) {
            this.selection.push(item);
          } else {
            var i = this.selection.indexOf(item);
            if (i >= 0) {
              this.selection.splice(i, 1);
            }
          }
          this.fire("core-select", {isSelected: isSelected, item: item});
        }
      },
      /**
       * Set the selection state for a given `item`. If the multi property
       * is true, then the selected state of `item` will be toggled; otherwise
       * the `item` will be selected.
       * @method select
       * @param {any} item: The item to select.
      */
      select: function(item) {
        if (this.multi) {
          this.toggle(item);
        } else if (this.getSelection() !== item) {
          this.setItemSelected(this.getSelection(), false);
          this.setItemSelected(item, true);
        }
      },
      /**
       * Toggles the selection state for `item`.
       * @method toggle
       * @param {any} item: The item to toggle.
      */
      toggle: function(item) {
        this.setItemSelected(item, !this.isSelected(item));
      }
    });
  </script>
</polymer-element>


<polymer-element name="core-selector" attributes="selected multi valueattr selectedClass selectedProperty selectedAttribute selectedItem selectedModel selectedIndex notap target itemsSelector activateEvent" assetpath="../core-selector/">

  <template>
    <core-selection id="selection" multi="{{multi}}" on-core-select="{{selectionSelect}}"></core-selection>
    <content id="items" select="*"></content>
  </template>

  <script>

    Polymer('core-selector', {

      /**
       * Gets or sets the selected element.  Default to use the index
       * of the item element.
       *
       * If you want a specific attribute value of the element to be
       * used instead of index, set "valueattr" to that attribute name.
       *
       * Example:
       *
       *     <core-selector valueattr="label" selected="foo">
       *       <div label="foo"></div>
       *       <div label="bar"></div>
       *       <div label="zot"></div>
       *     </core-selector>
       *
       * In multi-selection this should be an array of values.
       *
       * Example:
       *
       *     <core-selector id="selector" valueattr="label" multi>
       *       <div label="foo"></div>
       *       <div label="bar"></div>
       *       <div label="zot"></div>
       *     </core-selector>
       *
       *     this.$.selector.selected = ['foo', 'zot'];
       *
       * @attribute selected
       * @type Object
       * @default null
       */
      selected: null,

      /**
       * If true, multiple selections are allowed.
       *
       * @attribute multi
       * @type boolean
       * @default false
       */
      multi: false,

      /**
       * Specifies the attribute to be used for "selected" attribute.
       *
       * @attribute valueattr
       * @type string
       * @default 'name'
       */
      valueattr: 'name',

      /**
       * Specifies the CSS class to be used to add to the selected element.
       * 
       * @attribute selectedClass
       * @type string
       * @default 'core-selected'
       */
      selectedClass: 'core-selected',

      /**
       * Specifies the property to be used to set on the selected element
       * to indicate its active state.
       *
       * @attribute selectedProperty
       * @type string
       * @default ''
       */
      selectedProperty: '',

      /**
       * Specifies the attribute to set on the selected element to indicate
       * its active state.
       *
       * @attribute selectedAttribute
       * @type string
       * @default 'active'
       */
      selectedAttribute: 'active',

      /**
       * Returns the currently selected element. In multi-selection this returns
       * an array of selected elements.
       * 
       * @attribute selectedItem
       * @type Object
       * @default null
       */
      selectedItem: null,

      /**
       * In single selection, this returns the model associated with the
       * selected element.
       * 
       * @attribute selectedModel
       * @type Object
       * @default null
       */
      selectedModel: null,

      /**
       * In single selection, this returns the selected index.
       *
       * @attribute selectedIndex
       * @type number
       * @default -1
       */
      selectedIndex: -1,

      /**
       * The target element that contains items.  If this is not set 
       * core-selector is the container.
       * 
       * @attribute target
       * @type Object
       * @default null
       */
      target: null,

      /**
       * This can be used to query nodes from the target node to be used for 
       * selection items.  Note this only works if the 'target' property is set.
       *
       * Example:
       *
       *     <core-selector target="{{$.myForm}}" itemsSelector="input[type=radio]"></core-selector>
       *     <form id="myForm">
       *       <label><input type="radio" name="color" value="red"> Red</label> <br>
       *       <label><input type="radio" name="color" value="green"> Green</label> <br>
       *       <label><input type="radio" name="color" value="blue"> Blue</label> <br>
       *       <p>color = {{color}}</p>
       *     </form>
       * 
       * @attribute itemSelector
       * @type string
       * @default ''
       */
      itemsSelector: '',

      /**
       * The event that would be fired from the item element to indicate
       * it is being selected.
       *
       * @attribute activateEvent
       * @type string
       * @default 'tap'
       */
      activateEvent: 'tap',

      /**
       * Set this to true to disallow changing the selection via the
       * `activateEvent`.
       *
       * @attribute notap
       * @type boolean
       * @default false
       */
      notap: false,

      ready: function() {
        this.activateListener = this.activateHandler.bind(this);
        this.observer = new MutationObserver(this.updateSelected.bind(this));
        if (!this.target) {
          this.target = this;
        }
      },

      get items() {
        if (!this.target) {
          return [];
        }
        var nodes = this.target !== this ? (this.itemsSelector ? 
            this.target.querySelectorAll(this.itemsSelector) : 
                this.target.children) : this.$.items.getDistributedNodes();
        return Array.prototype.filter.call(nodes || [], function(n) {
          return n && n.localName !== 'template';
        });
      },

      targetChanged: function(old) {
        if (old) {
          this.removeListener(old);
          this.observer.disconnect();
          this.clearSelection();
        }
        if (this.target) {
          this.addListener(this.target);
          this.observer.observe(this.target, {childList: true});
          this.updateSelected();
        }
      },

      addListener: function(node) {
        node.addEventListener(this.activateEvent, this.activateListener);
      },

      removeListener: function(node) {
        node.removeEventListener(this.activateEvent, this.activateListener);
      },

      get selection() {
        return this.$.selection.getSelection();
      },

      selectedChanged: function() {
        this.updateSelected();
      },

      updateSelected: function() {
        this.validateSelected();
        if (this.multi) {
          this.clearSelection();
          this.selected && this.selected.forEach(function(s) {
            this.valueToSelection(s);
          }, this);
        } else {
          this.valueToSelection(this.selected);
        }
      },

      validateSelected: function() {
        // convert to an array for multi-selection
        if (this.multi && !Array.isArray(this.selected) && 
            this.selected !== null && this.selected !== undefined) {
          this.selected = [this.selected];
        }
      },

      clearSelection: function() {
        if (this.multi) {
          this.selection.slice().forEach(function(s) {
            this.$.selection.setItemSelected(s, false);
          }, this);
        } else {
          this.$.selection.setItemSelected(this.selection, false);
        }
        this.selectedItem = null;
        this.$.selection.clear();
      },

      valueToSelection: function(value) {
        var item = (value === null || value === undefined) ? 
            null : this.items[this.valueToIndex(value)];
        this.$.selection.select(item);
      },

      updateSelectedItem: function() {
        this.selectedItem = this.selection;
      },

      selectedItemChanged: function() {
        if (this.selectedItem) {
          var t = this.selectedItem.templateInstance;
          this.selectedModel = t ? t.model : undefined;
        } else {
          this.selectedModel = null;
        }
        this.selectedIndex = this.selectedItem ? 
            parseInt(this.valueToIndex(this.selected)) : -1;
      },

      valueToIndex: function(value) {
        // find an item with value == value and return it's index
        for (var i=0, items=this.items, c; (c=items[i]); i++) {
          if (this.valueForNode(c) == value) {
            return i;
          }
        }
        // if no item found, the value itself is probably the index
        return value;
      },

      valueForNode: function(node) {
        return node[this.valueattr] || node.getAttribute(this.valueattr);
      },

      // events fired from <core-selection> object
      selectionSelect: function(e, detail) {
        this.updateSelectedItem();
        if (detail.item) {
          this.applySelection(detail.item, detail.isSelected);
        }
      },

      applySelection: function(item, isSelected) {
        if (this.selectedClass) {
          item.classList.toggle(this.selectedClass, isSelected);
        }
        if (this.selectedProperty) {
          item[this.selectedProperty] = isSelected;
        }
        if (this.selectedAttribute && item.setAttribute) {
          if (isSelected) {
            item.setAttribute(this.selectedAttribute, '');
          } else {
            item.removeAttribute(this.selectedAttribute);
          }
        }
      },

      // event fired from host
      activateHandler: function(e) {
        if (!this.notap) {
          var i = this.findDistributedTarget(e.target, this.items);
          if (i >= 0) {
            var item = this.items[i];
            var s = this.valueForNode(item) || i;
            if (this.multi) {
              if (this.selected) {
                this.addRemoveSelected(s);
              } else {
                this.selected = [s];
              }
            } else {
              this.selected = s;
            }
            this.asyncFire('core-activate', {item: item});
          }
        }
      },

      addRemoveSelected: function(value) {
        var i = this.selected.indexOf(value);
        if (i >= 0) {
          this.selected.splice(i, 1);
        } else {
          this.selected.push(value);
        }
        this.valueToSelection(value);
      },

      findDistributedTarget: function(target, nodes) {
        // find first ancestor of target (including itself) that
        // is in nodes, if any
        while (target && target != this) {
          var i = Array.prototype.indexOf.call(nodes, target);
          if (i >= 0) {
            return i;
          }
          target = target.parentNode;
        }
      }
    });
  </script>
</polymer-element>


<style shim-shadowdom="">/*
Copyright (c) 2014 The Polymer Project Authors. All rights reserved.
This code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt
The complete set of authors may be found at http://polymer.github.io/AUTHORS.txt
The complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt
Code distributed by Google as part of the polymer project is also
subject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt
*/

html /deep/ core-menu {
  display: block;
  margin: 12px;
}

polyfill-next-selector { content: 'core-menu > core-item'; }
html /deep/ core-menu::shadow ::content > core-item {
  cursor: default;
}
</style>

<polymer-element name="core-menu" extends="core-selector" assetpath="../core-menu/">
<script>
  Polymer('core-menu',{});
</script>
</polymer-element>

<!--
Copyright (c) 2014 The Polymer Project Authors. All rights reserved.
This code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt
The complete set of authors may be found at http://polymer.github.io/AUTHORS.txt
The complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt
Code distributed by Google as part of the polymer project is also
subject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt
-->

<!--
`core-item` is a simple line-item object: a label and/or an icon that can also 
act as a link.

Example:

    <core-item icon="settings" label="Settings"></core-item>
    
To use as a link, put &lt;a&gt; element in the item.

Example:

    <core-item icon="settings" label="Settings">
      <a href="#settings" target="_self"></a>
    </core-item>

@group Polymer Core Elements
@element core-item
@homepage github.io
-->



<style shim-shadowdom="">/*
Copyright (c) 2014 The Polymer Project Authors. All rights reserved.
This code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt
The complete set of authors may be found at http://polymer.github.io/AUTHORS.txt
The complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt
Code distributed by Google as part of the polymer project is also
subject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt
*/

html /deep/ core-item {
  display: block;
  position: relative;
  min-height: 40px;
  white-space: nowrap;
}

html /deep/ core-item.core-selected {
  font-weight: bold;
}

html /deep/ core-item::shadow core-icon {
  margin: 0 16px 0 4px;
}

html /deep/ core-item::shadow ::content > a {
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
}
</style>

<polymer-element name="core-item" attributes="label icon src" horizontal="" center="" layout="" assetpath="../core-item/">
<template>

  <core-icon src="{{src}}" icon="{{icon}}" hidden?="{{!src &amp;&amp; !icon}}"></core-icon>{{label}}<content></content>
  
</template>
<script>

  Polymer('core-item', {
    
    /**
     * The URL of an image for the icon.
     *
     * @attribute src
     * @type string
     * @default ''
     */

    /**
     * Specifies the icon from the Polymer icon set.
     *
     * @attribute icon
     * @type string
     * @default ''
     */

    /**
     * Specifies the label for the menu item.
     *
     * @attribute label
     * @type string
     * @default ''
     */

  });

</script>
</polymer-element>


<!--
@class core-doc-toc
-->

<polymer-element name="core-doc-toc" attributes="data selected" assetpath="../core-doc-viewer/elements/">

  <template>

    <style>:host {
  display: block;
  position: relative;
  border-right: 1px solid silver;
}

core-header-panel {
  position: absolute;
  top: 0;
  left: 0;
  height: 100%;
  width: 100%;
}

core-toolbar {
  background-color: #eeeeee;
}
</style>

    <core-header-panel mode="waterfall">

<!--      <core-toolbar theme="core-light-theme">
        <core-icon-button icon="menu"></core-icon-button>
        <span core-flex>Topics</span>
        <core-icon-button icon="search" on-tap="{{searchAction}}"></core-icon-button>
      </core-toolbar>

      <core-toolbar id="searchBar" style="background-color: #C2185B; position: absolute; top: 0; left: 0; right: 0; opacity: 0; display: none;" class="seamed" theme="core-dark-theme">
        <core-icon-button icon="search"></core-icon-button>
        <core-icon-button icon="close" on-tap="{{closeSearchAction}}"></core-icon-button>
      </core-toolbar>-->

      <core-menu selected="{{selected}}">
        <template repeat="{{data}}">
          <core-item><a href="#{{name}}">{{name}}</a></core-item>
        </template>
      </core-menu>

    </core-header-panel>

  </template>

  <script>

    Polymer('core-doc-toc', {

      searchAction: function() {
        this.$.searchBar.style.opacity = 1;
        this.$.searchBar.style.display = '';
      },

      closeSearchAction: function() {
        this.$.searchBar.style.opacity = 0;
        this.$.searchBar.style.display = 'none';
      }

    });

  </script>

</polymer-element>



<!--
Displays formatted source documentation scraped from input urls.

Documentation can be encoded into html comments (&lt;!-- ... --&gt;) or using JsDoc notation (/&#42;&#42; ... &#42;/).

When using JsDoc notation, remember that the left-margin includes an asterisk and a single space.
This is important for markdown constructs that count spaces. Code blocks for example, must be
five spaces from the first asterisk.

## Markdown

Markdown format is supported.

### Links

Arbitrary links can be encoded using [standard markdown format](http://daringfireball.net/projects/markdown/syntax). 
[GitHub Flavored Markdown](https://help.github.com/articles/github-flavored-markdown) is also supported.

Links to other topics can be made with hash-links [core-doc-viewer](#core-doc-viewer).

### Code

Example

    Four space indents indicate code blocks.
    
    <code>blocks are syntax highlighted</code>
    
    <script>
      while(true) {
        javascript('is highlighted also');
      }
    </script>

### Blockquote

 > Blockquote is supported for long text that needs to wrap with a common left side indent.
 > Blockquote is supported for long text that needs to wrap with a common left side indent.  

### Lists
 
1.  enumerated
1.  lists
 
Use - or + for bullet points:
 
- bullet
- lists

### Tables

| First Header  | Second Header |
| ------------- | ------------- |
| Content Cell  | Content Cell  |
| Content Cell  | Content Cell  |

### HTML

Arbitrary HTML is also supported

<input><button>Button</button><hr/>

@class core-doc-viewer
@homepage github.io
-->

<polymer-element name="core-doc-viewer" attributes="sources route url" assetpath="../core-doc-viewer/">

  <template>

    <style>

      core-doc-toc {
        display: none;
        width: 332px;
        overflow-x: hidden;
      }

    </style>

    <context-free-parser url="{{url}}" on-data-ready="{{parserDataReady}}"></context-free-parser>

    <template repeat="{{sources}}">
      <context-free-parser url="{{}}" on-data-ready="{{parserDataReady}}"></context-free-parser>
    </template>

    <core-layout></core-layout>
    <core-doc-toc id="toc" data="{{classes}}" selected="{{selected}}"></core-doc-toc>
    <core-doc-page core-flex="" data="{{data}}"></core-doc-page>

  </template>

  <script>

    Polymer('core-doc-viewer', {
      /**
       * A single file to parse for docs
       *
       * @attribute url
       * @type String
       * @default ''
       */

      /**
       * Class documentation extracted from the parser
       *
       * @property classes
       * @type Array
       * @default []
       */
      classes: [],

      /**
       * Files to parse for docs
       *
       * @attribute sources
       * @type Array
       * @default []
       */
      sources: [],

      ready: function() {
        window.addEventListener('hashchange', this.parseLocationHash.bind(this));
        this.parseLocationHash();
      },

      parseLocationHash: function() {
        this.route = window.location.hash.slice(1);
      },

      routeChanged: function() {
        this.validateRoute();
      },

      validateRoute: function() {
        if (this.route) {
          this.classes.some(function(c) {
            if (c.name === this.route) {
              this.data = c;
              this.route = '';
              return;
            }
          }, this);
        }
      },

      selectedChanged: function() { 
        this.data = this.classes[this.selected];
      },

      parserDataReady: function(event) {
        this.assimilateData(event.target.data);
      },

      assimilateData: function(data) {
        this.classes = this.classes.concat(data.classes);
        this.classes.sort(function(a, b) {
          var na = a && a.name.toLowerCase(), nb = b && b.name.toLowerCase();
          return (na < nb) ? -1 : (na == nb) ? 0 : 1;
        });
        if (!this.data && !this.route && this.classes.length) {
          this.data = this.classes[0];
        }
        if (this.classes.length > 1) {
          this.$.toc.style.display = 'block';
        }
        this.validateRoute();
      }

    });

  </script>

</polymer-element>
</div>
<div hidden>undefined</div>

<!--

Implements the default landing page for Polymer components.

`<core-component-page>` can render an information page for any component.
Polymer components use this component in `index.html` to provide the standard landing page.

`<core-component-page>` is _vulcanized_, which means it contains all it's dependencies baked in.
Therefore, this component is intended to be used only by itself in a page.

This *-dev package contains the raw source and the dependency manifest necessary
to reconstruct `core-component-page\core-component-page.html` via vulcanize.

`<core-component-page>` will set the page title automatically.

@group Polymer Core Elements
@element core-component-page

-->

<polymer-element name="core-component-page" attributes="moduleName sources" assetpath="../core-component-page-dev/">

  <template>

    <style>/*
Copyright (c) 2014 The Polymer Project Authors. All rights reserved.
This code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt
The complete set of authors may be found at http://polymer.github.io/AUTHORS.txt
The complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt
Code distributed by Google as part of the polymer project is also
subject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt
*/

:host {
  font-family: Arial, sans-serif;
  height: 100vh;
}

h2 {
  display: inline-block;
  margin: 8px 6px;
  vertical-align: middle;
}

.choiceB, .choiceC, .choiceD {
  /* typography */
  color: white;
  /* font-size: 14px; */
  font-size: 12px;
  font-weight: bold;
  text-decoration: none;
  /* colors / effects */
  background-color: #4285F4;
  box-shadow: 0 1px 2px 0px rgba(0, 0, 0, 0.1);
  box-shadow: 0 0 1px 0 rgba(0, 0, 0, 0.1);
  border-radius: 2px;
  cursor: pointer;
  /* metrics */
  display: inline-block;
  padding: 4px 12px 5px 12px;
  margin: 4px 0;
}

.appbar {
  background-color: #E91E63;
  color: white;
}
</style>

    <core-layout vertical=""></core-layout>

    <core-toolbar class="appbar">
      <span>{{moduleName}}</span>
      <a class="choiceC" target="_blank" href="../{{moduleName}}/demo.html">demo</a>
    </core-toolbar>

    <core-doc-viewer core-flex="" url="{{url}}" sources="{{sources}}"></core-doc-viewer>

  </template>

  <script>

    Polymer('core-component-page', {

      moduleName: '',
      // TODO(sjmiles): needed this to force Object type for deserialization
      sources: [],

      ready: function() {
        this.moduleName = this.moduleName || this.findModuleName();
      },

      moduleNameChanged: function() {
        document.title = this.moduleName;
        this.url = !this.sources.length && this.moduleName ? this.moduleName + '.html' : '';
      },

      findModuleName: function() {
        var path = location.pathname.split('/');
        var name = path.pop() || path.pop();
        if (name.indexOf('.html') >= 0) {
          name = path.pop();
        }
        return name || '';
      }

    });

  </script>

</polymer-element>