Publish Vulpes Preview 15 sources for desktop, Android and Tundra
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377
gaia/tv_apps/smart-system/js/stack_manager.js
Executable file
377
gaia/tv_apps/smart-system/js/stack_manager.js
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'use strict';
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/* global AppWindowManager */
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var StackManager = {
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init: function sm_init() {
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window.addEventListener('appcreated', this);
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window.addEventListener('launchapp', this);
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window.addEventListener('appopening', this);
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window.addEventListener('appterminated', this);
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window.addEventListener('home', this);
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window.addEventListener('cardviewclosed', this);
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},
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getCurrent: function sm_getCurrent() {
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if (this.position < 0) {
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return undefined;
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}
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var app = this._currentFromStack();
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// XXX: This code will be removed when bug 967405 lands.
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// Until then we can get into edge cases where the app currently
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// displayed is not part of the stack and we don't want to break.
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if (!app) {
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app = AppWindowManager.getActiveApp();
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}
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return app;
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},
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_currentFromStack: function sm_currentInStack() {
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return this._stack[this.position].getActiveWindow();
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},
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outOfStack: function sm_outOfStack() {
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return (this._currentFromStack() !== this.getCurrent());
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},
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getPrev: function sm_getPrev() {
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if (this.outOfStack()) {
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return undefined;
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}
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var inGroupPrev = this._currentFromStack().getPrev();
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if (inGroupPrev) {
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return inGroupPrev;
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}
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var previousGroup = this._stack[this.position - 1];
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if (previousGroup) {
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return previousGroup.getLeafWindow();
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}
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return undefined;
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},
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getNext: function sm_getNext() {
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if (this.outOfStack()) {
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return undefined;
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}
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var inGroupNext = this._currentFromStack().getNext();
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if (inGroupNext) {
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return inGroupNext;
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}
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var nextGroup = this._stack[this.position + 1];
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if (nextGroup) {
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return nextGroup.getRootWindow();
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}
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return undefined;
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},
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goPrev: function sm_goPrev() {
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var oldApp = this.getCurrent();
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var newApp = this.getPrev();
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if (!oldApp || !newApp) {
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return;
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}
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this._queueBroadcast(newApp, oldApp);
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if (newApp.groupID !== oldApp.groupID) {
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this.position--;
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}
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},
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goNext: function sm_goNext() {
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var oldApp = this.getCurrent();
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var newApp = this.getNext();
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if (!oldApp || !newApp) {
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return;
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}
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this._queueBroadcast(newApp, oldApp);
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if (newApp.groupID !== oldApp.groupID) {
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this.position++;
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}
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},
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commit: function sm_commit() {
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// We're back to the same place, let's close up the gesture without
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// queueing.
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if (this._didntMove) {
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window.dispatchEvent(new CustomEvent('sheets-gesture-end'));
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}
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if (!this._broadcastTimeout) {
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this._broadcast();
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}
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},
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commitClose: function sm_commitClose() {
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// TODO: make this transition pretty but at least we're
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// fixing the race condition
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clearTimeout(this._broadcastTimeout);
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this._broadcastTimeout = null;
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if (this._appIn) {
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this._appIn.broadcast('closed');
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}
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if (this._appOut) {
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this._appOut.transitionController.clearTransitionClasses();
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}
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this._cleanUp();
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},
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snapshot: function sm_snapshot() {
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return this._stack.slice(0);
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},
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get length() {
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return this._stack.length;
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},
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get position() {
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return this._current;
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},
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get _didntMove() {
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return !!this._appIn && this._appIn === this._appOut;
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},
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set position(position) {
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var _position = parseInt(position);
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if (_position < -1 || _position >= this._stack.length) {
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console.warn('bad stack position. requested position = ',
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_position, '; stack length = ', this._stack.length);
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return;
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}
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this._current = _position;
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},
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_stack: [],
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_current: -1,
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handleEvent: function sm_handleEvent(e) {
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switch (e.type) {
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case 'appcreated':
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var app = e.detail;
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// Multiple apps use role=system to opt out of being part of
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// the the card view.
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// XXX: This code will be removed when bug 967405 lands.
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if (app.manifest && app.manifest.role == 'system') {
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return;
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}
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// The FTU application should never show up in the stack.
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// XXX: This code will be removed when bug 967405 lands.
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if (app.name == 'FTU') {
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return;
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}
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// If the app is a child window of other window, do not insert it.
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if (app.previousWindow) {
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return;
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}
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if (app.stayBackground) {
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this._insertBelow(app);
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} else {
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this._moveToTop(this.position);
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this._insertOnTop(app);
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}
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break;
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case 'launchapp':
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var config = e.detail;
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if (!config.stayBackground) {
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this._moveToTop(this.position);
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var idx = this._indexOfURL(config.url);
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if (idx !== undefined) {
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this._moveToTop(idx);
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}
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}
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break;
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case 'appopening':
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var app = e.detail; // jshint ignore: line
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var root = app.getRootWindow();
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var id = this._indexOfInstanceID(root.instanceID);
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if (id !== undefined && id !== this._current) {
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this._current = id;
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}
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break;
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case 'home':
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this._moveToTop(this.position);
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this.position = -1;
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this.commitClose();
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break;
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case 'appterminated':
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var instanceID = e.detail.instanceID;
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this._remove(instanceID);
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break;
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case 'cardviewclosed':
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if (e.detail && e.detail.newStackPosition) {
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this.position = e.detail.newStackPosition;
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}
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break;
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}
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this._stackChanged();
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},
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_insertBelow: function sm_insertBelow(app) {
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this._stack.splice(0, 0, app);
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if (this._stack.length > 1) {
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this.position++;
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} else {
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this.position = 0;
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}
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},
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_insertOnTop: function sm_insertOnTop(app) {
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this.position = this._stack.push(app) - 1;
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},
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_moveToTop: function sm_moveToTop(index) {
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if (index === -1 || index >= this._stack.length) {
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return;
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}
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var sheet = this._stack.splice(index, 1)[0];
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this.position = this._stack.push(sheet) - 1;
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},
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_indexOfURL: function sm_indexOfURL(url) {
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var result;
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this._stack.some(function(app, idx) {
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if (app.url == url) {
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result = idx;
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return true;
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}
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return false;
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});
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return result;
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},
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_indexOfInstanceID: function sm_indexOfIntanceID(instanceID) {
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var result;
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this._stack.some(function(app, idx) {
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if (app.instanceID == instanceID) {
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result = idx;
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return true;
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} false;
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});
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return result;
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},
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_remove: function sm_remove(instanceID) {
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for (var i = (this._stack.length - 1); i >= 0; i--) {
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var sConfig = this._stack[i];
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if (sConfig.instanceID == instanceID) {
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this._stack.splice(i, 1);
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if (i <= this.position && this.position >= 0) {
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this.position--;
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}
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return;
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}
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}
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},
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_stackChanged: function sm_stackChanged() {
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var details = {
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position: this.position,
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sheets: this._stack
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};
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var evt = new CustomEvent('stackchanged', { detail: details });
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window.dispatchEvent(evt);
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},
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_broadcastTimeout: null,
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_appIn: null,
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_appOut: null,
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_queueBroadcast: function sm_queueBroadcast(appIn, appOut) {
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if (this._appIn) {
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this._appIn.cancelQueuedShow();
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}
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this._appIn = appIn;
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appIn.queueShow();
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if (!this._appOut) {
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this._appOut = appOut;
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appOut.queueHide();
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}
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if (this._broadcastTimeout === null) {
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AppWindowManager.sendStopRecordingRequest();
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}
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clearTimeout(this._broadcastTimeout);
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this._broadcastTimeout = setTimeout(this._broadcast.bind(this), 800);
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},
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_broadcast: function sm_broadcast(close) {
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clearTimeout(this._broadcastTimeout);
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this._broadcastTimeout = null;
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// We're back to the same place
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if (this._didntMove) {
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this._appIn.transitionController.clearTransitionClasses();
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this._cleanUp();
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return;
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}
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// We're done swiping around, let's close up the gesture. Note that
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// sheets-gesture-start is detected and sent in SheetsTransition!!!
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window.dispatchEvent(new CustomEvent('sheets-gesture-end'));
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if (this._appIn) {
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this._appIn.broadcast('swipein');
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}
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if (this._appOut) {
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this._appOut.broadcast('swipeout');
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}
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this._cleanUp();
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this._stackChanged();
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},
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_cleanUp: function sm_cleanUp() {
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this._appIn = null;
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this._appOut = null;
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},
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/* Debug */
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_dump: function sm_dump() {
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var prefix = 'StackManager';
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for (var i = 0; i < this._stack.length; i++) {
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var separator = (i == this.position) ? ' * ' : ' - ';
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console.log(prefix + separator + i + ' -> ' + this._stack[i].name +
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'/' + this._stack[i].instanceID);
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var child = this._stack[i].nextWindow;
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while (child) {
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var separator2 = (child.isActive()) ? ' @ ' : ' = ';
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console.log(prefix + separator2 + i + ' ---> ' + this._stack[i].name +
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'/' + this._stack[i].instanceID);
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child = child.nextWindow;
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}
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}
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},
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__clearAll: function sm_clearAll() {
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this._stack = [];
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this.position = 0;
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}
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};
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StackManager.init();
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