chrome/browser/resources/pdf/elements/viewer-zoom-toolbar/viewer-zoom-toolbar.js

   1 // Copyright 2015 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 (function() {
   6
   7   var FIT_TO_PAGE = 0;
   8   var FIT_TO_WIDTH = 1;
   9
  10   Polymer({
  11     is: 'viewer-zoom-toolbar',
  12
  13     properties: {
  14       visible_: {
  15         type: Boolean,
  16         value: true
  17       }
  18     },
  19
  20     fitToggle: function() {
  21       if (this.$['fit-button'].activeIndex == FIT_TO_WIDTH)
  22         this.fire('fit-to-width');
  23       else
  24         this.fire('fit-to-page');
  25     },
  26
  27     zoomIn: function() {
  28       this.fire('zoom-in');
  29     },
  30
  31     zoomOut: function() {
  32       this.fire('zoom-out');
  33     },
  34
  35     show: function() {
  36       if (!this.visible_) {
  37         this.visible_ = true;
  38         this.$['fit-button'].show();
  39         this.$['zoom-in-button'].show();
  40         this.$['zoom-out-button'].show();
  41       }
  42     },
  43
  44     hide: function() {
  45       if (this.visible_) {
  46         this.visible_ = false;
  47         this.$['fit-button'].hide();
  48         this.$['zoom-in-button'].hide();
  49         this.$['zoom-out-button'].hide();
  50       }
  51     },
  52   });
  53
  54 })();