133 lines
4.8 KiB
JavaScript
133 lines
4.8 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) 2013
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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 = ['BrowserUIShowHideObserver'];
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function BrowserUIShowHideObserver(aOwner, aBox) {
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this.owner = aOwner;
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this.box = aBox;
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this.init();
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}
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BrowserUIShowHideObserver.prototype = {
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get MutationObserver()
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{
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var w = this.box.ownerDocument.defaultView;
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return w.MutationObserver || w.MozMutationObserver;
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},
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init : function BrowserUIShowHideObserver_onInit()
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{
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if (!this.MutationObserver)
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return;
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var self = this;
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this.observer = new this.MutationObserver(function(aMutations, aObserver) {
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self.onMutationOnParent(aMutations, aObserver);
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});
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this.observer.observe(this.box, { childList : true, attributes : true });
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this.initChildrenObserver();
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},
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onMutationOnParent : function BrowserUIShowHideObserver_onMutationOnParent(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 'childList':
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this.destroyChildrenObserver();
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this.initChildrenObserver();
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this.owner.browser.treeStyleTab.updateFloatingTabbar(this.owner.kTABBAR_UPDATE_BY_WINDOW_RESIZE);
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return;
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case 'attributes':
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this.onAttributeModified(this.box, aMutations, 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 BrowserUIShowHideObserver_destroy()
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{
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if (this.observer) {
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this.destroyChildrenObserver();
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this.observer.disconnect();
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delete this.observer;
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}
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delete this.box;
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delete this.owner;
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},
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initChildrenObserver : function BrowserUIShowHideObserver_initChildrenObserver(aParent)
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{
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Array.forEach(this.box.childNodes, function(aChild) {
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var observer = aChild.__treestyletab__attributeObserver;
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if (observer)
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return;
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var self = this;
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observer = new this.MutationObserver(function(aMutations, aObserver) {
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self.onAttributeModified(aChild, aMutations, aObserver);
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});
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observer.observe(aChild, { attributes : true });
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aChild.__treestyletab__attributeObserver = observer;
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}, this)
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},
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onAttributeModified : function BrowserUIShowHideObserver_onAttributeModified(aTargetElement, aMutations, aObserver)
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{
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// ignore show/hide of the tab bar itself, to avoid infinity loop.
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if (aTargetElement == this.owner.browser.treeStyleTab.ownerToolbar)
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return;
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aMutations.forEach(function(aMutation) {
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if (aMutation.type != 'attributes')
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return;
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if (aMutation.attributeName == 'hidden' ||
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aMutation.attributeName == 'collapsed' ||
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aMutation.attributeName == 'moz-collapsed' || // Used in full screen mode
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aMutation.attributeName == 'disablechrome')
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this.owner.browser.treeStyleTab.updateFloatingTabbar(this.owner.kTABBAR_UPDATE_BY_WINDOW_RESIZE);
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}, this);
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},
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destroyChildrenObserver : function BrowserUIShowHideObserver_destroyChildrenObserver(aParent)
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{
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Array.forEach(this.box.childNodes, function(aChild) {
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var observer = aChild.__treestyletab__attributeObserver;
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if (!observer)
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return;
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observer.disconnect();
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delete aChild.__treestyletab__attributeObserver;
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}, this)
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}
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};
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