toolkit/modules/SelectContentHelper.jsm@6474c204b198 (annotated)
toolkit/modules/SelectContentHelper.jsm
Wed, 31 Dec 2014 06:09:35 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Wed, 31 Dec 2014 06:09:35 +0100
- changeset 0
- 6474c204b198
- permissions
- -rw-r--r--
Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.
| michael@0 | 1 | /* This Source Code Form is subject to the terms of the Mozilla Public |
| michael@0 | 2 | * License, v. 2.0. If a copy of the MPL was not distributed with this |
| michael@0 | 3 | * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ |
| michael@0 | 4 | |
| michael@0 | 5 | "use strict"; |
| michael@0 | 6 | |
| michael@0 | 7 | const Cc = Components.classes; |
| michael@0 | 8 | const Ci = Components.interfaces; |
| michael@0 | 9 | const Cu = Components.utils; |
| michael@0 | 10 | |
| michael@0 | 11 | Cu.import("resource://gre/modules/XPCOMUtils.jsm"); |
| michael@0 | 12 | |
| michael@0 | 13 | XPCOMUtils.defineLazyModuleGetter(this, "BrowserUtils", |
| michael@0 | 14 | "resource://gre/modules/BrowserUtils.jsm"); |
| michael@0 | 15 | |
| michael@0 | 16 | this.EXPORTED_SYMBOLS = [ |
| michael@0 | 17 | "SelectContentHelper" |
| michael@0 | 18 | ]; |
| michael@0 | 19 | |
| michael@0 | 20 | this.SelectContentHelper = function (aElement, aGlobal) { |
| michael@0 | 21 | this.element = aElement; |
| michael@0 | 22 | this.global = aGlobal; |
| michael@0 | 23 | this.init(); |
| michael@0 | 24 | this.showDropDown(); |
| michael@0 | 25 | } |
| michael@0 | 26 | |
| michael@0 | 27 | this.SelectContentHelper.prototype = { |
| michael@0 | 28 | init: function() { |
| michael@0 | 29 | this.global.addMessageListener("Forms:SelectDropDownItem", this); |
| michael@0 | 30 | this.global.addMessageListener("Forms:DismissedDropDown", this); |
| michael@0 | 31 | this.global.addEventListener("pagehide", this); |
| michael@0 | 32 | }, |
| michael@0 | 33 | |
| michael@0 | 34 | uninit: function() { |
| michael@0 | 35 | this.global.removeMessageListener("Forms:SelectDropDownItem", this); |
| michael@0 | 36 | this.global.removeMessageListener("Forms:DismissedDropDown", this); |
| michael@0 | 37 | this.global.removeEventListener("pagehide", this); |
| michael@0 | 38 | this.element = null; |
| michael@0 | 39 | this.global = null; |
| michael@0 | 40 | }, |
| michael@0 | 41 | |
| michael@0 | 42 | showDropDown: function() { |
| michael@0 | 43 | let rect = this._getBoundingContentRect(); |
| michael@0 | 44 | |
| michael@0 | 45 | this.global.sendAsyncMessage("Forms:ShowDropDown", { |
| michael@0 | 46 | rect: rect, |
| michael@0 | 47 | options: this._buildOptionList(), |
| michael@0 | 48 | selectedIndex: this.element.selectedIndex, |
| michael@0 | 49 | }); |
| michael@0 | 50 | }, |
| michael@0 | 51 | |
| michael@0 | 52 | _getBoundingContentRect: function() { |
| michael@0 | 53 | return BrowserUtils.getElementBoundingScreenRect(this.element); |
| michael@0 | 54 | }, |
| michael@0 | 55 | |
| michael@0 | 56 | _buildOptionList: function() { |
| michael@0 | 57 | return buildOptionListForChildren(this.element); |
| michael@0 | 58 | }, |
| michael@0 | 59 | |
| michael@0 | 60 | receiveMessage: function(message) { |
| michael@0 | 61 | switch (message.name) { |
| michael@0 | 62 | case "Forms:SelectDropDownItem": |
| michael@0 | 63 | if (this.element.selectedIndex != message.data.value) { |
| michael@0 | 64 | this.element.selectedIndex = message.data.value; |
| michael@0 | 65 | |
| michael@0 | 66 | let event = this.element.ownerDocument.createEvent("Events"); |
| michael@0 | 67 | event.initEvent("change", true, true); |
| michael@0 | 68 | this.element.dispatchEvent(event); |
| michael@0 | 69 | } |
| michael@0 | 70 | |
| michael@0 | 71 | //intentional fall-through |
| michael@0 | 72 | case "Forms:DismissedDropDown": |
| michael@0 | 73 | this.uninit(); |
| michael@0 | 74 | break; |
| michael@0 | 75 | } |
| michael@0 | 76 | }, |
| michael@0 | 77 | |
| michael@0 | 78 | handleEvent: function(event) { |
| michael@0 | 79 | switch (event.type) { |
| michael@0 | 80 | case "pagehide": |
| michael@0 | 81 | this.global.sendAsyncMessage("Forms:HideDropDown", {}); |
| michael@0 | 82 | this.uninit(); |
| michael@0 | 83 | break; |
| michael@0 | 84 | } |
| michael@0 | 85 | } |
| michael@0 | 86 | |
| michael@0 | 87 | } |
| michael@0 | 88 | |
| michael@0 | 89 | function buildOptionListForChildren(node) { |
| michael@0 | 90 | let result = []; |
| michael@0 | 91 | for (let child = node.firstChild; child; child = child.nextSibling) { |
| michael@0 | 92 | if (child.tagName == 'OPTION' || child.tagName == 'OPTGROUP') { |
| michael@0 | 93 | let info = { |
| michael@0 | 94 | tagName: child.tagName, |
| michael@0 | 95 | textContent: child.tagName == 'OPTGROUP' ? child.getAttribute("label") |
| michael@0 | 96 | : child.textContent, |
| michael@0 | 97 | // XXX this uses a highlight color when this is the selected element. |
| michael@0 | 98 | // We need to suppress such highlighting in the content process to get |
| michael@0 | 99 | // the option's correct unhighlighted color here. |
| michael@0 | 100 | // We also need to detect default color vs. custom so that a standard |
| michael@0 | 101 | // color does not override color: menutext in the parent. |
| michael@0 | 102 | // backgroundColor: computedStyle.backgroundColor, |
| michael@0 | 103 | // color: computedStyle.color, |
| michael@0 | 104 | children: child.tagName == 'OPTGROUP' ? buildOptionListForChildren(child) : [] |
| michael@0 | 105 | }; |
| michael@0 | 106 | result.push(info); |
| michael@0 | 107 | } |
| michael@0 | 108 | } |
| michael@0 | 109 | return result; |
| michael@0 | 110 | } |
