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 ANIMATION_INTERVAL = 50;
   6
   7 Polymer({
   8   is: 'viewer-zoom-toolbar',
   9
  10   properties: {
  11    /**
  12      * The default zoom percentage.
  13      */
  14     zoomValue: {
  15       type: Number,
  16       value: 100
  17     }
  18   },
  19
  20   get visible() {
  21     return this.visible_;
  22   },
  23
  24   ready: function() {
  25     this.visible_ = true;
  26   },
  27
  28   fitToPage: function() {
  29     this.fire('fit-to-page');
  30   },
  31
  32   fitToWidth: function() {
  33     this.fire('fit-to-width');
  34   },
  35
  36   zoomIn: function() {
  37     this.fire('zoom-in');
  38   },
  39
  40   zoomOut: function() {
  41     this.fire('zoom-out');
  42   },
  43
  44   show: function() {
  45     if (!this.visible) {
  46       this.visible_ = true;
  47       this.$['fit-to-width-button'].show();
  48       this.$['fit-to-page-button'].show();
  49       this.$['zoom-in-button'].show();
  50       this.$['zoom-out-button'].show();
  51     }
  52   },
  53
  54   hide: function() {
  55     if (this.visible) {
  56       this.visible_ = false;
  57       this.$['fit-to-page-button'].hide();
  58       this.$['fit-to-width-button'].hide();
  59       this.$['zoom-in-button'].hide();
  60       this.$['zoom-out-button'].hide();
  61     }
  62   },
  63 });