chrome/browser/resources/extensions/extension_error.js

   1 // Copyright 2013 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 cr.define('extensions', function() {
   6   'use strict';
   7
   8   /**
   9    * Clone a template within the extension error template collection.
  10    * @param {string} templateName The class name of the template to clone.
  11    * @return {HTMLElement} The clone of the template.
  12    */
  13   function cloneTemplate(templateName) {
  14     return /** @type {HTMLElement} */($('template-collection-extension-error').
  15         querySelector('.' + templateName).cloneNode(true));
  16   }
  17
  18   /**
  19    * Checks that an Extension ID follows the proper format (i.e., is 32
  20    * characters long, is lowercase, and contains letters in the range [a, p]).
  21    * @param {string} id The Extension ID to test.
  22    * @return {boolean} Whether or not the ID is valid.
  23    */
  24   function idIsValid(id) {
  25     return /^[a-p]{32}$/.test(id);
  26   }
  27
  28   /**
  29    * Creates a new ExtensionError HTMLElement; this is used to show a
  30    * notification to the user when an error is caused by an extension.
  31    * @param {Object} error The error the element should represent.
  32    * @constructor
  33    * @extends {HTMLDivElement}
  34    */
  35   function ExtensionError(error) {
  36     var div = cloneTemplate('extension-error-metadata');
  37     div.__proto__ = ExtensionError.prototype;
  38     div.decorate(error);
  39     return div;
  40   }
  41
  42   ExtensionError.prototype = {
  43     __proto__: HTMLDivElement.prototype,
  44
  45     /**
  46      * @param {RuntimeError} error
  47      * @override
  48      */
  49     decorate: function(error) {
  50       // Add an additional class for the severity level.
  51       if (error.level == 0)
  52         this.classList.add('extension-error-severity-info');
  53       else if (error.level == 1)
  54         this.classList.add('extension-error-severity-warning');
  55       else
  56         this.classList.add('extension-error-severity-fatal');
  57
  58       var iconNode = document.createElement('img');
  59       iconNode.className = 'extension-error-icon';
  60       this.insertBefore(iconNode, this.firstChild);
  61
  62       var messageSpan = this.querySelector('.extension-error-message');
  63       messageSpan.textContent = error.message;
  64       messageSpan.title = error.message;
  65
  66       var extensionUrl = 'chrome-extension://' + error.extensionId + '/';
  67       var viewDetailsLink = this.querySelector('.extension-error-view-details');
  68
  69       // If we cannot open the file source and there are no external frames in
  70       // the stack, then there are no details to display.
  71       if (!extensions.ExtensionErrorOverlay.canShowOverlayForError(
  72               error, extensionUrl)) {
  73         viewDetailsLink.hidden = true;
  74       } else {
  75         var stringId = extensionUrl.toLowerCase() == 'manifest.json' ?
  76             'extensionErrorViewManifest' : 'extensionErrorViewDetails';
  77         viewDetailsLink.textContent = loadTimeData.getString(stringId);
  78
  79         viewDetailsLink.addEventListener('click', function(e) {
  80           extensions.ExtensionErrorOverlay.getInstance().setErrorAndShowOverlay(
  81               error, extensionUrl);
  82         });
  83       }
  84     },
  85   };
  86
  87   /**
  88    * A variable length list of runtime or manifest errors for a given extension.
  89    * @param {Array.<Object>} errors The list of extension errors with which
  90    *     to populate the list.
  91    * @constructor
  92    * @extends {HTMLDivElement}
  93    */
  94   function ExtensionErrorList(errors) {
  95     var div = cloneTemplate('extension-error-list');
  96     div.__proto__ = ExtensionErrorList.prototype;
  97     div.errors_ = errors;
  98     div.decorate();
  99     return div;
 100   }
 101
 102   ExtensionErrorList.prototype = {
 103     __proto__: HTMLDivElement.prototype,
 104
 105     /**
 106      * @private
 107      * @const
 108      * @type {number}
 109      */
 110     MAX_ERRORS_TO_SHOW_: 3,
 111
 112     /** @override */
 113     decorate: function() {
 114       this.contents_ = this.querySelector('.extension-error-list-contents');
 115       this.errors_.forEach(function(error) {
 116         if (idIsValid(error.extensionId)) {
 117           this.contents_.appendChild(document.createElement('li')).appendChild(
 118               new ExtensionError(error));
 119         }
 120       }, this);
 121
 122       if (this.contents_.children.length > this.MAX_ERRORS_TO_SHOW_)
 123         this.initShowMoreButton_();
 124     },
 125
 126     /**
 127      * Initialize the "Show More" button for the error list. If there are more
 128      * than |MAX_ERRORS_TO_SHOW_| errors in the list.
 129      * @private
 130      */
 131     initShowMoreButton_: function() {
 132       var button = this.querySelector('.extension-error-list-show-more button');
 133       button.hidden = false;
 134       button.isShowingAll = false;
 135       var listContents = this.querySelector('.extension-error-list-contents');
 136       listContents.addEventListener('webkitTransitionEnd', function(e) {
 137         if (listContents.classList.contains('active'))
 138           listContents.classList.add('scrollable');
 139       });
 140       button.addEventListener('click', function(e) {
 141         // Disable scrolling while transitioning. If the element is active,
 142         // scrolling is enabled when the transition ends.
 143         listContents.classList.toggle('active');
 144         listContents.classList.remove('scrollable');
 145         var message = button.isShowingAll ? 'extensionErrorsShowMore' :
 146                                             'extensionErrorsShowFewer';
 147         button.textContent = loadTimeData.getString(message);
 148         button.isShowingAll = !button.isShowingAll;
 149       }.bind(this));
 150     }
 151   };
 152
 153   return {
 154     ExtensionErrorList: ExtensionErrorList
 155   };
 156 });