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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421
gaia/tv_apps/tv-epg/js/epg.js
Executable file
421
gaia/tv_apps/tv-epg/js/epg.js
Executable file
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/* global Clock, EPGController, SpatialNavigator, KeyNavigationAdapter,
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ContextMenu */
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'use strict';
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(function(exports) {
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function EPG() {
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this._fetchElement();
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// Unit of EPG timeline is 30 min
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this.timelineUnit = 30 * 60000;
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// Time when EPG is opened. It is used as a reference for setting left
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// attribute of program list and timeline
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this.initialTime = Math.floor(Date.now() / this.timelineUnit);
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// Time offset represents the most left visible time in program container
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this.visibleTimeOffset = this.initialTime;
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// Number of timeslot that can be shown in program container
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this.visibleTimeSize = 4;
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// Channel offset represents the first visible channel in program container
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this.visibleChannelOffset = 0;
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// Number of channel that can be shown in program container
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this.visibleChannelSize = 5;
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this.translate = {
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x: 0,
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y: 0
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};
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this.keyNavigatorAdapter = new KeyNavigationAdapter();
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this.keyNavigatorAdapter.init();
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this.keyNavigatorAdapter.on('move', this._onMove.bind(this));
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this.spatialNavigator = new SpatialNavigator([], {
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ignoreHiddenElement: true
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});
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this.spatialNavigator.on('focus', this._onFocus.bind(this));
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this.spatialNavigator.on('unfocus', this._onUnfocus.bind(this));
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this.epgController = new EPGController(
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this.visibleTimeOffset - this.visibleTimeSize,
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this.timelineUnit
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);
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this.clock = new Clock();
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navigator.mozL10n.ready(function() {
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this.clock.stop();
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this.clock.start(this._updateClock.bind(this));
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}.bind(this));
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navigator.mozApps.getSelf().onsuccess = function(evt){
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if (evt.target && evt.target.result) {
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this.contextmenu = new ContextMenu([{
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element: document.getElementById('pin-button-contextmenu'),
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hasText: true
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}], evt.target.result);
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}
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}.bind(this);
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this.epgController.on('scanned', this._onScanned.bind(this));
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this.epgController.on('appendChannel', this._appendChannel.bind(this));
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this.epgController.on('updateProgram', this._updateProgramSlot.bind(this));
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this.epgController.on('addTimeline', this._addTimeline.bind(this));
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this.epgController.on(
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'allTimelineAdded', this._allTimelineAdded.bind(this));
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this.epgController.on(
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'allChannelFetched', this._allChannelFetched.bind(this));
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}
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var proto = {};
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proto._fetchElement = function epg__fetchElement(){
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this.timeElement = document.getElementById('time');
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this.dateElement = document.getElementById('date');
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this.videoElement = document.getElementById('video-thumbnail');
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this.timelineElement = document.getElementById('timeline');
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this.timeMarkerElement = document.getElementById('time-marker');
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this.timePrefixElement = document.getElementById('time-prefix');
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this.channelListElement = document.getElementById('channel-list');
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this.programListElement = document.getElementById('program-list');
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this.programMetaElement = document.getElementById('program-meta');
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this.progressBarElement = document.getElementById('progress-bar');
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this.programTitleElement = document.getElementById('program-title');
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this.programDetailElement = document.getElementById('program-detail');
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this.timeMarkerContainerElement =
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document.getElementById('time-marker-container');
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};
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/**
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* Align timelineOffset and use it as x-axis translate reference point
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*/
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proto._allTimelineAdded = function epg__allTimelineAdded() {
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var timeDiff = this.initialTime - this.epgController.timelineOffset;
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this.timelineElement.style.left =
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(-timeDiff * EPG.COLUMN_WIDTH) + 'rem';
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this.programListElement.style.left =
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(-timeDiff * EPG.COLUMN_WIDTH) + 'rem';
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};
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/**
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* Align channelOffset and use it as y-axis translate reference point
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*/
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proto._allChannelFetched = function epg__allChannelFetched() {
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this.visibleChannelOffset = this.epgController.channelOffset;
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this.channelListElement.style.top =
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(-this.visibleChannelOffset * EPG.ROW_HEIGHT) + 'rem';
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this.programListElement.style.top =
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(-this.visibleChannelOffset * EPG.ROW_HEIGHT) + 'rem';
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};
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proto._onScanned = function epg__onScanned(stream) {
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this.videoElement.mozSrcObject = stream;
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this.epgController.fetchPrograms(
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this.visibleTimeOffset - this.visibleTimeSize,
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3 * this.visibleTimeSize
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).then(function() {
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var timeIndex =
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this.visibleTimeOffset - this.epgController.timelineOffset;
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var programElement =
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this.epgController.programTable[timeIndex][this.visibleChannelOffset]
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.element;
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this.spatialNavigator.focus(programElement);
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this._updateProgramProgress(this._currentTime);
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this._updateDate(this.visibleTimeOffset * this.timelineUnit);
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}.bind(this)).catch(function(err) {
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console.error(err);
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});
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};
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/**
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* Add one more timeslot to timeline element.
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*/
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proto._addTimeline = function epg__addTimeline(index, time) {
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var timeSlotElement = document.createElement('LI');
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timeSlotElement.textContent = this._timeToString(time).timeWithPrefix;
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if (index < this.timelineElement.children.length) {
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this.timelineElement.insertBefore(
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timeSlotElement, this.timelineElement.children[index]);
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} else {
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this.timelineElement.appendChild(timeSlotElement);
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}
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this._addProgramSlot(index, time / this.timelineUnit);
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};
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/**
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* Add one more timeslot for every channels to program list.
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*/
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proto._addProgramSlot = function epg__addProgramSlot(index, time) {
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var rowElement;
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var programElement;
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var i;
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for (i = 0; i < this.programListElement.children.length; i++) {
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rowElement = this.programListElement.children[i];
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programElement = document.createElement('epg-program');
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programElement.startTime = time;
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if (index < this.timelineElement.children.length) {
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rowElement.insertBefore(programElement, rowElement.children[index]);
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} else {
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rowElement.appendChild(programElement);
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}
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}
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};
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/**
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* Create channel elements for input channel
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*/
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proto._appendChannel = function epg__appendChannel(channel, index) {
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var channelElement = document.createElement('LI');
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var channelTitle = document.createElement('SPAN');
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channelTitle.classList.add('title');
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channelTitle.textContent = channel.name;
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channelElement.textContent = channel.number;
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channelElement.appendChild(channelTitle);
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this.channelListElement.appendChild(channelElement);
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var programRow = document.createElement('UL');
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programRow.dataset.row = index;
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this.channelListElement.appendChild(channelElement);
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this.programListElement.appendChild(programRow);
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};
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proto._updateProgramSlot = function epg__updateProgramSlot(configs) {
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var rowElement = this.programListElement.children[configs.row];
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var programElement = rowElement.children[configs.column];
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var duration = programElement.duration;
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if (configs.title) {
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programElement.title = configs.title;
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}
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if (configs.duration) {
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duration = configs.duration;
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programElement.duration = duration;
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}
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if (configs.isVisible) {
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programElement.show();
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this.spatialNavigator.add(programElement);
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programElement.resetProgressElement(this.initialTime);
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} else {
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programElement.hide();
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// If the old focus element only contains partial program segment, we have
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// to refocus to the first visible element of the same program.
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if (programElement === this.spatialNavigator.getFocusedElement()) {
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this.spatialNavigator.focus(
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this.epgController.programTable[configs.column][configs.row].element);
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}
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this.spatialNavigator.remove(programElement);
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}
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if (configs.item) {
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configs.item.element = programElement;
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}
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};
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proto._updateClock = function epg_updateClock(date) {
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var timeString = this._timeToString(date);
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this.timePrefixElement.textContent = timeString.prefix;
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this.timeElement.textContent = timeString.time;
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this._currentTime = new Date(date).getTime();
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this._updateProgramProgress(this._currentTime);
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};
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proto._updateProgramProgress = function epg__updateProgramProgress(time) {
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var timeIndex =
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Math.floor(time / this.timelineUnit) - this.epgController.timelineOffset;
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var playingPrograms = this.epgController.programTable[timeIndex];
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var prevPrograms = this.epgController.programTable[timeIndex - 1];
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var row;
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var programElement;
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// Update progress bar in every currently playing program
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for (row in playingPrograms) {
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programElement = playingPrograms[row].element;
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programElement.progress = time / this.timelineUnit;
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this.timeMarkerElement.style.transform =
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'translateX(' +
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((time / this.timelineUnit - this.initialTime) * EPG.COLUMN_WIDTH) +
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'rem)';
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// Privous program may not be 100% filled because because of little
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// variance of timestamp
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if (prevPrograms && prevPrograms[row] &&
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programElement !== prevPrograms[row].element) {
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programElement = prevPrograms[row].element;
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programElement.fillProgress();
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}
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}
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programElement = this.spatialNavigator.getFocusedElement();
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if (programElement) {
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this.progressBarElement.style.transform =
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programElement.progressElement.style.transform;
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}
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};
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proto._timeToString = function epg__timeToString(time) {
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var now = new Date(time);
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var _ = navigator.mozL10n.get;
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var use12Hour = window.navigator.mozHour12;
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var f = new navigator.mozL10n.DateTimeFormat();
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var timeFormat = use12Hour ? _('shortTimeFormat12') :
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_('shortTimeFormat24');
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timeFormat = timeFormat.replace('%p', '').trim();
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var formatted = f.localeFormat(now, timeFormat);
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var prefix = use12Hour ? f.localeFormat(now, '%p') : '';
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return {
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prefix: prefix,
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time: formatted,
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timeWithPrefix: formatted + prefix
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};
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};
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proto._onFocus = function epg__onFocus(programElement) {
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var rowElement = programElement.parentElement;
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var rowIndex = parseInt(rowElement.dataset.row, 10);
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var rowOffset = this.epgController.channelOffset;
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var startTime = programElement.startTime;
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var timelineOffset = this.epgController.timelineOffset;
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programElement.classList.add('focus');
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rowElement.classList.remove('hidden');
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this._setTitlePadding({
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setToNull: true
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});
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this._displayProgramInfo(
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startTime - this.epgController.timelineOffset, rowIndex);
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this.epgController.switchChannel(rowIndex);
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this.progressBarElement.style.transform =
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programElement.progressElement.style.transform;
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if (rowIndex < this.visibleChannelOffset) {
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// Move up
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this.translate.y = (rowOffset - rowIndex) * EPG.ROW_HEIGHT;
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this.visibleChannelOffset = rowIndex;
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} else if (rowIndex >=
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this.visibleChannelOffset + this.visibleChannelSize ) {
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// Move down
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this.translate.y =
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(rowOffset + this.visibleChannelSize - rowIndex - 1) * EPG.ROW_HEIGHT;
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this.visibleChannelOffset = rowIndex - this.visibleChannelSize + 1;
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}
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if (startTime < this.visibleTimeOffset ||
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startTime >= (this.visibleTimeOffset + this.visibleTimeSize)) {
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// Move left and right
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this.translate.x = (this.initialTime - startTime) * EPG.COLUMN_WIDTH;
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this.visibleTimeOffset = startTime;
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this._updateDate(startTime * this.timelineUnit);
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}
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this._setTitlePadding();
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// Prefetch more older programs
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if (this.visibleTimeOffset - 2 * this.visibleTimeSize < timelineOffset) {
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this.epgController.fetchPrograms(
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timelineOffset - 2 * this.visibleTimeSize,
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2 * this.visibleTimeSize
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).then(function() {
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this._updateProgramProgress.bind(this._currentTime);
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}.bind(this)).catch(function(err) {
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console.error(err);
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});
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}
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// Prefetch more future programs
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if (this.visibleTimeOffset + 2 * this.visibleTimeSize >
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timelineOffset + this.epgController.totalTimeslotCount) {
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this.epgController.fetchPrograms(
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timelineOffset + this.epgController.totalTimeslotCount,
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2 * this.visibleTimeSize
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).then(function() {
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this._updateProgramProgress.bind(this._currentTime);
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}.bind(this)).catch(function(err) {
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console.error(err);
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});
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}
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this.channelListElement.style.transform =
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'translateY(' + this.translate.y + 'rem) translateZ(0.01rem)';
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this.timelineElement.style.transform =
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'translateX(' + this.translate.x + 'rem) translateZ(0.01rem)';
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this.programListElement.style.transform =
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'translate(' + this.translate.x + 'rem,' + this.translate.y +
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'rem) translateZ(0.01rem)';
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// Move left instead of translateX in order to disable OMTA and sync with
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// timelineElement and programListElement
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this.timeMarkerContainerElement.style.left = this.translate.x + 'rem';
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};
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/**
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* For every visible programs in the first column, it has to be aligned to
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* the left edge of visible window. If opts.setToNull is true, then the
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* left-padding of each program will be cleared.
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*/
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proto._setTitlePadding = function epg__setTitlePadding(opts) {
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var rowOffset = this.visibleChannelOffset;
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var size = this.visibleChannelSize;
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var row;
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var timeOffset = this.visibleTimeOffset - this.epgController.timelineOffset;
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var programElement;
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for(row = rowOffset; row < rowOffset + size; row++) {
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if (this.epgController.programTable[timeOffset][row]) {
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programElement =
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this.epgController.programTable[timeOffset][row].element;
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if (opts && opts.setToNull) {
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programElement.titlePadding = null;
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} else {
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programElement.titlePadding = EPG.COLUMN_WIDTH *
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(this.visibleTimeOffset - programElement.startTime) + 'rem';
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}
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}
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}
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};
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proto._displayProgramInfo = function epg__displayProgramInfo(column, row) {
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var program = this.epgController.programTable[column][row].program;
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this.programTitleElement.textContent = program.title;
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this.programDetailElement.textContent = program.description;
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this.programMetaElement.innerHTML = '';
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var timeIntervalElement = document.createElement('LI');
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var timeText = this._timeToString(program.startTime).timeWithPrefix;
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timeText += ' - ';
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timeText +=
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this._timeToString(program.startTime + program.duration).timeWithPrefix;
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timeIntervalElement.textContent = timeText;
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this.programMetaElement.appendChild(timeIntervalElement);
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};
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proto._updateDate = function epg__updateDate(time) {
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if (navigator.mozL10n.readyState === 'complete') {
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var now = new Date(time);
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var timeFormat = navigator.mozL10n.get('EPGDate');
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var dtf = new navigator.mozL10n.DateTimeFormat();
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this.dateElement.textContent = dtf.localeFormat(now, timeFormat);
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}
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};
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proto._onUnfocus = function epg__onUnfocus(programElement) {
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programElement.classList.remove('focus');
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};
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proto._onMove = function epg__onMove(key) {
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this.spatialNavigator.move(key);
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};
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EPG.ROW_HEIGHT = 11.5;
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EPG.COLUMN_WIDTH = 33.8;
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EPG.COLUMN_MARGIN = 0.3;
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exports.EPG = EPG;
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EPG.prototype = proto;
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})(window);
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