blob: bbfe4ba3d52bac7235b1b7a69aece6755a64cd7c [file] [log] [blame]
/*
* Copyright (C) 2016 Apple Inc. All Rights Reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
class TracksSupport extends MediaControllerSupport
{
constructor(mediaController)
{
super(mediaController);
if (!this.control)
return;
this.mediaController.controls.tracksPanel.dataSource = this;
this.mediaController.controls.tracksPanel.uiDelegate = this;
}
// Protected
get control()
{
return this.mediaController.controls.tracksButton;
}
get mediaEvents()
{
return ["loadedmetadata"];
}
get tracksToMonitor()
{
return [this.mediaController.media.audioTracks, this.mediaController.media.textTracks];
}
buttonWasPressed(control)
{
this.mediaController.controls.showTracksPanel();
}
tracksPanelNumberOfSections()
{
let numberOfSections = 0;
if (this._canPickAudioTracks())
numberOfSections++;
if (this._canPickTextTracks())
numberOfSections++;
return numberOfSections;
}
tracksPanelTitleForSection(sectionIndex)
{
if (sectionIndex == 0 && this._canPickAudioTracks())
return UIString("Audio");
return UIString("Subtitles");
}
tracksPanelNumberOfTracksInSection(sectionIndex)
{
if (sectionIndex == 0 && this._canPickAudioTracks())
return this._audioTracks().length;
return this._textTracks().length;
}
tracksPanelTitleForTrackInSection(trackIndex, sectionIndex)
{
let track;
if (sectionIndex == 0 && this._canPickAudioTracks())
track = this._audioTracks()[trackIndex];
else
track = this._textTracks()[trackIndex];
if (this.mediaController.host)
return this.mediaController.host.displayNameForTrack(track);
return track.label;
}
tracksPanelIsTrackInSectionSelected(trackIndex, sectionIndex)
{
if (sectionIndex == 0 && this._canPickAudioTracks())
return this._audioTracks()[trackIndex].enabled;
const trackItem = this._textTracks()[trackIndex];
const host = this.mediaController.host;
const usesAutomaticTrack = host ? host.captionDisplayMode === "automatic" : false;
if (host && trackItem === host.captionMenuOffItem && (host.captionDisplayMode === "forced-only" || host.captionDisplayMode === "manual"))
return true;
if (host && trackItem === host.captionMenuAutomaticItem && usesAutomaticTrack)
return true;
return !usesAutomaticTrack && trackItem.mode !== "disabled";
}
tracksPanelSelectionDidChange(trackIndex, sectionIndex)
{
if (sectionIndex == 0 && this._canPickAudioTracks())
this._audioTracks().forEach((audioTrack, index) => audioTrack.enabled = index === trackIndex);
else if (this.mediaController.host)
this.mediaController.host.setSelectedTextTrack(this._textTracks()[trackIndex]);
else
this._textTracks().forEach((textTrack, index) => textTrack.mode = index === trackIndex ? "showing" : "disabled");
this.mediaController.controls.hideTracksPanel();
}
syncControl()
{
this.control.enabled = (this.mediaController.layoutTraits & LayoutTraits.macOS) && (this._canPickAudioTracks() || this._canPickTextTracks());
}
// Private
_textTracks()
{
return this._sortedTrackList(this.mediaController.media.textTracks);
}
_audioTracks()
{
return this._sortedTrackList(this.mediaController.media.audioTracks);
}
_canPickAudioTracks()
{
const audioTracks = this._audioTracks();
return audioTracks && audioTracks.length > 1;
}
_canPickTextTracks()
{
const textTracks = this._textTracks();
return textTracks && textTracks.length > 0;
}
_sortedTrackList(tracks)
{
return Array.from(this.mediaController.host ? this.mediaController.host.sortedTrackListForMenu(tracks) : tracks);
}
}