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| 1 // Copyright (c) 2012 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('options', function() { | |
| 6 var BubbleBase = cr.ui.BubbleBase; | |
| 7 | |
| 8 var OptionsBubble = cr.ui.define('div'); | |
| 9 | |
| 10 OptionsBubble.prototype = { | |
| 11 // Set up the prototype chain. | |
| 12 __proto__: BubbleBase.prototype, | |
| 13 | |
| 14 /** | |
| 15 * Initialization function for the cr.ui framework. | |
| 16 */ | |
| 17 decorate: function() { | |
| 18 BubbleBase.prototype.decorate.call(this); | |
| 19 this.classList.add('options-bubble'); | |
| 20 }, | |
| 21 | |
| 22 /** | |
| 23 * Set the DOM sibling node, i.e. the node as whose sibling the bubble | |
| 24 * should join the DOM to ensure that focusable elements inside the bubble | |
| 25 * follow the target element in the document's tab order. Only available | |
| 26 * when the bubble is not being shown. | |
| 27 * @param {HTMLElement} node The new DOM sibling node. | |
| 28 */ | |
| 29 set domSibling(node) { | |
| 30 if (!this.hidden) | |
| 31 return; | |
| 32 | |
| 33 this.domSibling_ = node; | |
| 34 }, | |
| 35 | |
| 36 /** | |
| 37 * Show the bubble. | |
| 38 */ | |
| 39 show: function() { | |
| 40 if (!this.hidden) | |
| 41 return; | |
| 42 | |
| 43 BubbleBase.prototype.show.call(this); | |
| 44 this.domSibling_.showingBubble = true; | |
| 45 | |
| 46 var doc = this.ownerDocument; | |
| 47 this.eventTracker_.add(doc, 'mousewheel', this, true); | |
| 48 this.eventTracker_.add(doc, 'scroll', this, true); | |
| 49 this.eventTracker_.add(doc, 'elementFocused', this, true); | |
| 50 this.eventTracker_.add(window, 'resize', this); | |
| 51 }, | |
| 52 | |
| 53 /** | |
| 54 * Hide the bubble. | |
| 55 */ | |
| 56 hide: function() { | |
| 57 BubbleBase.prototype.hide.call(this); | |
| 58 this.domSibling_.showingBubble = false; | |
| 59 }, | |
| 60 | |
| 61 /** | |
| 62 * Handle events, closing the bubble when the user clicks or moves the focus | |
| 63 * outside the bubble and its target element, scrolls the underlying | |
| 64 * document or resizes the window. | |
| 65 * @param {Event} event The event. | |
| 66 */ | |
| 67 handleEvent: function(event) { | |
| 68 BubbleBase.prototype.handleEvent.call(this, event); | |
| 69 | |
| 70 switch (event.type) { | |
| 71 // Close the bubble when the user clicks outside it, except if it is a | |
| 72 // left-click on the bubble's target element (allowing the target to | |
| 73 // handle the event and close the bubble itself). | |
| 74 case 'mousedown': | |
| 75 if (event.button == 0 && this.anchorNode_.contains(event.target)) | |
| 76 break; | |
| 77 // Close the bubble when the underlying document is scrolled. | |
| 78 case 'mousewheel': | |
| 79 case 'scroll': | |
| 80 if (this.contains(event.target)) | |
| 81 break; | |
| 82 // Close the bubble when the window is resized. | |
| 83 case 'resize': | |
| 84 this.hide(); | |
| 85 break; | |
| 86 // Close the bubble when the focus moves to an element that is not the | |
| 87 // bubble target and is not inside the bubble. | |
| 88 case 'elementFocused': | |
| 89 if (!this.anchorNode_.contains(event.target) && | |
| 90 !this.contains(event.target)) { | |
| 91 this.hide(); | |
| 92 } | |
| 93 break; | |
| 94 } | |
| 95 }, | |
| 96 | |
| 97 /** | |
| 98 * Attach the bubble to the document's DOM, making it a sibling of the | |
| 99 * |domSibling_| so that focusable elements inside the bubble follow the | |
| 100 * target element in the document's tab order. | |
| 101 * @private | |
| 102 */ | |
| 103 attachToDOM_: function() { | |
| 104 var parent = this.domSibling_.parentNode; | |
| 105 parent.insertBefore(this, this.domSibling_.nextSibling); | |
| 106 }, | |
| 107 }; | |
| 108 | |
| 109 return { | |
| 110 OptionsBubble: OptionsBubble | |
| 111 }; | |
| 112 }); | |
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