246 lines
8.1 KiB
JavaScript
246 lines
8.1 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) 2014-2015
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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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* Infocatcher <https://github.com/Infocatcher>
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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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var EXPORTED_SYMBOLS = ['BrowserUIShowHideObserver'];
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Components.utils.import('resource://gre/modules/XPCOMUtils.jsm');
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Components.utils.import('resource://treestyletab-modules/constants.js');
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XPCOMUtils.defineLazyModuleGetter(this, 'utils', 'resource://treestyletab-modules/utils.js', 'TreeStyleTabUtils');
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function BrowserUIShowHideObserver(aOwner, aBox, aOptions) {
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this.owner = aOwner;
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this.box = aBox;
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this.init(aOptions);
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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(aOptions)
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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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var options = {
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childList : true,
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attributes : true,
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subtree : true,
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attributeOldValue: utils.isDebugging('browserUIShowHideObserver'),
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attributeFilter : [
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'hidden',
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'collapsed',
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'moz-collapsed', // Used in full screen mode
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'disablechrome',
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'width',
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'height'
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]
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};
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if (aOptions) {
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Object.keys(options).forEach(function(aKey) {
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if (aKey in aOptions)
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options[aKey] = aOptions[aKey];
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});
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}
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this.observer.observe(this.box, options);
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},
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onMutation : function BrowserUIShowHideObserver_onMutation(aMutations, aObserver)
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{
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aMutations.forEach(function(aMutation) {
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try {
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switch (aMutation.type)
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{
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case 'childList':
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if (aMutation.target == this.box) {
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this.dumpMutation(aMutation, 'BrowserUIShowHideObserver_onMutation/childList');
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this.owner.browser.treeStyleTab.updateFloatingTabbar(TreeStyleTabConstants.kTABBAR_UPDATE_BY_WINDOW_RESIZE);
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}
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return;
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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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}
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catch(error) {
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this.dumpMutation(aMutation, 'BrowserUIShowHideObserver_onMutation(error)');
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Components.utils.reportError(error);
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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.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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dumpMutation : function BrowserUIShowHideObserver_dumpMutation(aMutation, aDescription)
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{
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if (!utils.isDebugging('browserUIShowHideObserver'))
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return;
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var target = aMutation.target;
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var ownerInformation = this.box.localName + '#' + this.box.id + '.' + this.box.className;
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var targetInformation = target.localName + '#' + target.id + '.' + target.className;
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var attributeInformation = '';
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if (aMutation.attributeName)
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attributeInformation = ' / ' +
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aMutation.attributeName + ', ' +
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aMutation.oldValue + ' => ' +
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target.getAttribute(aMutation.attributeName);
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dump(aDescription + ' ' +
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ownerInformation + ' / ' +
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targetInformation +
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attributeInformation + '\n');
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},
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onAttributeModified : function BrowserUIShowHideObserver_onAttributeModified(aMutation, aObserver)
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{
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var TST = this.owner.browser.treeStyleTab;
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if (this.handlingAttrChange ||
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TST.notifyingRenderedEvent)
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return;
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var target = aMutation.target;
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var state = this.serializeBoxState(target);
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if (target.__treestyletab_mutationObserver_lastState == state)
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return;
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if (
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// ignore modifications of each tab
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TST.getTabFromChild(target) ||
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TST.evaluateXPath(
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// ignore modifications in the location bar (ex. identity icon)
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'ancestor-or-self::xul:textbox |' +
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// or scrollable indicator in the vertical tab bar
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'ancestor-or-self::xul:spacer[' +
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'contains(@class, "arrowscrollbox-overflow-start-indicator") or ' +
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'contains(@class, "arrowscrollbox-overflow-end-indicator")' +
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'][ancestor::xul:tabs[@' + TreeStyleTabConstants.kMODE + ' = "vertical"]]',
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target,
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Components.interfaces.nsIDOMXPathResult.FIRST_ORDERED_NODE_TYPE
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).singleNodeValue
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)
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return;
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var tabbar = this.owner.browser.tabContainer;
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var placeHolder = TST.tabStripPlaceHolder;
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var tabbarVisibilityMismatching = false;
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{
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let toolbarVisible = !TST.ownerToolbar.collapsed;
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let tabbarVisible = tabbar.visible;
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let placeHolderVisible = !placeHolder.collapsed;
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tabbarVisibilityMismatching = (
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toolbarVisible != placeHolderVisible ||
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tabbarVisible != placeHolderVisible
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);
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}
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var tabbarMatrixMismatching = false;
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{
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let tabbarBox = tabbar.boxObject;
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let tabbarMatrix = JSON.stringify({
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x: tabbarBox.screenX,
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y: tabbarBox.screenY,
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w: tabbarBox.width,
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h: tabbarBox.height
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});
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let placeHolderBox = placeHolder.boxObject;
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let placeHolderMatrix = JSON.stringify({
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x: placeHolderBox.screenX,
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y: placeHolderBox.screenY,
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w: placeHolderBox.width,
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h: placeHolderBox.height
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});
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tabbarMatrixMismatching = tabbarMatrix != placeHolderMatrix;
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}
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if (
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// I must ignore show/hide of elements managed by TST,
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// to avoid infinity loop.
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TST.evaluateXPath(
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'ancestor-or-self::xul:*[@' + TreeStyleTabConstants.kTAB_STRIP_ELEMENT + '="true"]',
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target,
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Components.interfaces.nsIDOMXPathResult.FIRST_ORDERED_NODE_TYPE
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).singleNodeValue &&
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// However, I have to synchronize visibility of the real
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// tab bar and the placeholder's one. If they have
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// different visibility, then the tab bar is shown or
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// hidden by "auto hide tab bar" feature of someone
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// (Pale Moon, Tab Mix Plus, etc.)
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!tabbarVisibilityMismatching &&
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!tabbarMatrixMismatching
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)
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return;
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this.dumpMutation(aMutation, 'BrowserUIShowHideObserver_onAttributeModified');
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this.handlingAttrChange = true;
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TST.updateFloatingTabbar(TreeStyleTabConstants.kTABBAR_UPDATE_BY_WINDOW_RESIZE);
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var w = this.box.ownerDocument.defaultView;
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w.setTimeout((function() {
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target.__treestyletab_mutationObserver_lastState = this.serializeBoxState(target);
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this.handlingAttrChange = false;
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}).bind(this), 10);
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},
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serializeBoxState : function BrowserUIShowHideObserver_serializeBoxState(aElement)
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{
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aElement = aElement || this.box;
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var box = aElement.boxObject || {}; // Some times there is no boxObject (ex. HTML element)
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return JSON.stringify({
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width : box.width || 0,
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height : box.height || 0,
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hidden : Boolean(aElement.hidden),
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collapsed : Boolean(aElement.collapsed)
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});
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}
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};
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