Publish Vulpes Preview 15 sources for desktop, Android and Tundra
Share Gaia assets and adapters, keep private profiles and development documents local, and update both public READMEs.
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168
gaia/tv_apps/smart-system/js/visibility_manager.js
Executable file
168
gaia/tv_apps/smart-system/js/visibility_manager.js
Executable file
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/* global attentionWindowManager, Service */
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'use strict';
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(function(exports) {
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/**
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* VisibilityManager manages visibility events and broadcast
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* to AppWindowManager.
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* When an UI layer is overlapping the current app,
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* WindowManager should set the visibility of app iframe to false
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* And reset to true when the layer is gone.
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* We may need to handle windowclosing, windowopened in the future.
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*
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* @class VisibilityManager
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* @requires attentionWindowManager
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* @requires Service
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*/
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var VisibilityManager = function VisibilityManager() {
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this._normalAudioChannelActive = false;
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this._deviceLockedTimer = 0;
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this.overlayEvents = [
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'cardviewshown',
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'cardviewclosed',
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'lockscreen-request-unlock',
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'attention-inactive',
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'attentionopened',
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'mozChromeEvent',
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'appclosing',
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'homescreenopened',
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'utility-tray-overlayopened',
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'utility-tray-overlayclosed',
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'system-dialog-show',
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'system-dialog-hide',
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'searchrequestforeground',
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'apprequestforeground',
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'lockscreen-apprequestforeground',
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'secure-apprequestforeground',
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'homescreenrequestforeground'
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];
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};
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/**
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* Debug flag.
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* @type {Boolean}
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*/
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VisibilityManager.prototype.DEBUG = false;
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VisibilityManager.prototype.CLASS_NAME = 'VisibilityManager';
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/**
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* Startup. Start listening all related events that changes visibility.
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*
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* @memberof VisibilityManager.prototype
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*/
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VisibilityManager.prototype.start = function start() {
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this.overlayEvents.forEach(function overlayEventIterator(event) {
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window.addEventListener(event, this);
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}, this);
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};
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VisibilityManager.prototype.handleEvent = function vm_handleEvent(evt) {
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this.debug('handling ' + evt.type + ' event..');
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switch (evt.type) {
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case 'searchrequestforeground':
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case 'homescreenrequestforeground':
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case 'lockscreen-apprequestforeground':
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case 'secure-apprequestforeground':
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// XXX: Use hierachy manager to know who is top most.
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if (!attentionWindowManager.hasActiveWindow()) {
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evt.detail.setVisible(true);
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}
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break;
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case 'apprequestforeground':
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// XXX: Use hierachy manager to know who is top most.
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if (!Service.locked &&
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!attentionWindowManager.hasActiveWindow()) {
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evt.detail.setVisible(true);
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}
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break;
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// XXX: See Bug 999318.
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// Audio channel is always normal without going back to none.
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// We are actively discard audio channel state when homescreen
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// is opened.
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case 'appclosing':
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case 'homescreenopened':
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this._normalAudioChannelActive = false;
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break;
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case 'attention-inactive':
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this.publish('showwindow', { type: evt.type });
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this._resetDeviceLockedTimer();
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break;
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case 'lockscreen-request-unlock':
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var detail = evt.detail,
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activity = null,
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notificationId = null;
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if (detail) {
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activity = detail.activity;
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notificationId = detail.notificationId;
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}
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if (!attentionWindowManager.hasActiveWindow()) {
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this.publish('showwindow', {
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activity: activity, // Trigger activity opening in AWM
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notificationId: notificationId
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});
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}
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this._resetDeviceLockedTimer();
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break;
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case 'attentionopened':
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if (!Service.locked) {
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this.publish('hidewindow', { type: evt.type });
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}
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break;
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case 'utility-tray-overlayopened':
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case 'cardviewshown':
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case 'system-dialog-show':
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this.publish('hidewindowforscreenreader');
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break;
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case 'utility-tray-overlayclosed':
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case 'cardviewclosed':
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case 'system-dialog-hide':
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this.publish('showwindowforscreenreader');
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break;
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case 'mozChromeEvent':
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if (evt.detail.type == 'visible-audio-channel-changed') {
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this._resetDeviceLockedTimer();
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if (this._normalAudioChannelActive &&
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evt.detail.channel !== 'normal' && window.Service.locked) {
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this._deviceLockedTimer = setTimeout(function setVisibility() {
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if (window.Service.locked) {
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this.publish('hidewindow',
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{ screenshoting: false, type: evt.type });
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}
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}.bind(this), 3000);
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}
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this._normalAudioChannelActive = (evt.detail.channel === 'normal');
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this.debug('Normal AudioChannel changes to ',
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evt.detail.channel, this._normalAudioChannelActive);
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}
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break;
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}
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};
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VisibilityManager.prototype._resetDeviceLockedTimer =
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function vm_resetDeviceLockedTimer() {
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if (this._deviceLockedTimer) {
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clearTimeout(this._deviceLockedTimer);
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this._deviceLockedTimer = 0;
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}
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};
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VisibilityManager.prototype.publish = function vm_publish(eventName, detail) {
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this.debug('publishing: ', eventName);
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var evt = new CustomEvent(eventName, { detail: detail });
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window.dispatchEvent(evt);
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};
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VisibilityManager.prototype.debug = function vm_debug() {
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if (this.DEBUG) {
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console.log('[' + this.CLASS_NAME + ']' +
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'[' + Service.currentTime() + ']' +
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Array.slice(arguments).concat());
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}
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};
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exports.VisibilityManager = VisibilityManager;
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}(window));
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