treestyletab/modules/browserUIShowHideObserver.js
2014-11-11 19:26:14 +09:00

144 lines
4.6 KiB
JavaScript

/* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is the Tree Style Tab.
*
* The Initial Developer of the Original Code is YUKI "Piro" Hiroshi.
* Portions created by the Initial Developer are Copyright (C) 2014
* the Initial Developer. All Rights Reserved.
*
* Contributor(s): YUKI "Piro" Hiroshi <piro.outsider.reflex@gmail.com>
* Infocatcher <https://github.com/Infocatcher>
*
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 2 or later (the "GPL"), or
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ******/
const EXPORTED_SYMBOLS = ['BrowserUIShowHideObserver'];
Components.utils.import('resource://treestyletab-modules/constants.js');
function BrowserUIShowHideObserver(aOwner, aBox) {
this.owner = aOwner;
this.box = aBox;
this.init();
}
BrowserUIShowHideObserver.prototype = {
get MutationObserver()
{
var w = this.box.ownerDocument.defaultView;
return w.MutationObserver || w.MozMutationObserver;
},
init : function BrowserUIShowHideObserver_onInit()
{
if (!this.MutationObserver)
return;
this.observer = new this.MutationObserver((function(aMutations, aObserver) {
this.onMutation(aMutations, aObserver);
}).bind(this));
this.observer.observe(this.box, {
childList : true,
attributes : true,
subtree : true,
attributeFilter : [
'hidden',
'collapsed',
'moz-collapsed', // Used in full screen mode
'disablechrome',
'width',
'height'
]
});
},
onMutation : function BrowserUIShowHideObserver_onMutation(aMutations, aObserver)
{
aMutations.forEach(function(aMutation) {
switch (aMutation.type)
{
case 'childList':
if (aMutation.target == this.box)
this.owner.browser.treeStyleTab.updateFloatingTabbar(TreeStyleTabConstants.kTABBAR_UPDATE_BY_WINDOW_RESIZE);
return;
case 'attributes':
this.onAttributeModified(aMutation, aObserver);
return;
}
}, this);
},
destroy : function BrowserUIShowHideObserver_destroy()
{
if (this.observer) {
this.observer.disconnect();
delete this.observer;
}
delete this.box;
delete this.owner;
},
onAttributeModified : function BrowserUIShowHideObserver_onAttributeModified(aMutation, aObserver)
{
if (this.handlingAttrChange)
return;
var size = this.serializeBoxSize();
if (this.lastSize == size)
return;
var TST = this.owner.browser.treeStyleTab;
if (
// I must ignore show/hide of elements managed by TST,
// to avoid infinity loop.
aMutation.target.hasAttribute(TreeStyleTabConstants.kTAB_STRIP_ELEMENT) &&
// However, I have to synchronize visibility of the real
// tab bar and the placeholder's one. If they have
// different visibility, then the tab bar is shown or
// hidden by "auto hide tab bar" feature of someone
// (Pale Moon, Tab Mix Plus, etc.)
this.owner.browser.tabContainer.visible != TST.tabStripPlaceHolder.collapsed
)
return;
this.handlingAttrChange = true;
TST.updateFloatingTabbar(TreeStyleTabConstants.kTABBAR_UPDATE_BY_WINDOW_RESIZE);
var w = this.box.ownerDocument.defaultView;
w.setTimeout((function() {
this.lastSize = this.serializeBoxSize();
this.handlingAttrChange = false;
}).bind(this), 10);
},
serializeBoxSize : function BrowserUIShowHideObserver_serializeBoxSize(aBox)
{
aBox = aBox || this.box.boxObject;
return JSON.stringify({
width : aBox.width,
height : aBox.height
});
}
};