Extends

• TextTrackButton

Methods

buildCSSClass() → {string}

control-bar/text-track-controls/chapters-button.js, line 41

Builds the default DOM className.

Returns:

string -

The DOM className for this object.

createItems() → {Array.<TextTrackMenuItem>}

control-bar/text-track-controls/chapters-button.js, line 153

Create a menu item for each text track

Returns:

Array.<TextTrackMenuItem> -

Array of menu items

Overrides:

• TextTrackButton#createItems

createMenu() → {Menu}

control-bar/text-track-controls/chapters-button.js, line 142

Create menu from chapter track

Returns:

Menu -

New menu for the chapter buttons

findChaptersTrack() → {TextTrack|undefined}

control-bar/text-track-controls/chapters-button.js, line 109

Find the track object that is currently in use by this ChaptersButton

Returns:

TextTrack | undefined -

The current track or undefined if none was found.

getMenuCaption() → {string}

control-bar/text-track-controls/chapters-button.js, line 129

Get the caption for the ChaptersButton based on the track label. This will also use the current tracks localized kind as a fallback if a label does not exist.

Returns:

string -

The tracks current label or the localized track kind.

setTrack(track)

control-bar/text-track-controls/chapters-button.js, line 69

Set the currently selected track for the chapters button.

Parameters:

Name	Type	Description
track	TextTrack	The new track to select. Nothing will change if this is the currently selected track.

update(eventopt)

control-bar/text-track-controls/chapters-button.js, line 55

Update the menu based on the current state of its items.

Parameters:

Name	Type	Attributes	Description
event	EventTarget~Event	<optional>	An event that triggered this function to run.

Listens to Events:

• TextTrackList#event:addtrack
• TextTrackList#event:removetrack
• TextTrackList#event:change