107 lines
3.4 KiB
JavaScript
107 lines
3.4 KiB
JavaScript
/* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is the Tree Style Tab.
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*
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* The Initial Developer of the Original Code is YUKI "Piro" Hiroshi.
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* Portions created by the Initial Developer are Copyright (C) 2014
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s): YUKI "Piro" Hiroshi <piro.outsider.reflex@gmail.com>
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ******/
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const EXPORTED_SYMBOLS = ['TabAttributesObserver'];
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Components.utils.import('resource://treestyletab-modules/constants.js');
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function TabAttributesObserver(aContainer, aCallback) {
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this.container = aContainer;
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this.callback = aCallback;
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this.init();
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}
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TabAttributesObserver.prototype = {
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get MutationObserver()
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{
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var w = this.container.ownerDocument.defaultView;
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return w.MutationObserver || w.MozMutationObserver;
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},
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init : function TabAttributesObserver_onInit()
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{
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if (!this.MutationObserver)
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return;
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this.observer = new this.MutationObserver((function(aMutations, aObserver) {
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this.onMutation(aMutations, aObserver);
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}).bind(this));
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this.observer.observe(this.container, {
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childList : false,
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attributes : true,
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subtree : true,
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attributeFilter : [
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'label',
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'visibleLabel',
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'image'
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]
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});
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},
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onMutation : function TabAttributesObserver_onMutation(aMutations, aObserver)
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{
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aMutations.forEach(function(aMutation) {
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switch (aMutation.type)
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{
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case 'attributes':
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this.onAttributeModified(aMutation, aObserver);
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return;
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}
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}, this);
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},
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destroy : function TabAttributesObserver_destroy()
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{
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if (this.observer) {
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this.observer.disconnect();
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delete this.observer;
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}
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delete this.container;
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},
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onAttributeModified : function TabAttributesObserver_onAttributeModified(aMutation, aObserver)
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{
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if (this.handlingAttrChange ||
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aMutation.target.localName != 'tab')
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return;
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this.handlingAttrChange = true;
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this.callback(aMutation.target);
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var w = this.container.ownerDocument.defaultView;
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w.setTimeout((function() {
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this.handlingAttrChange = false;
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}).bind(this), 10);
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}
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};
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