# vjs.SubtitlesButton __EXTENDS__: [vjs.TextTrackButton](vjs.TextTrackButton.md) __DEFINED IN__: [src/js/tracks.js#L890](https://github.com/videojs/video.js/blob/master/src/js/tracks.js#L890) The button component for toggling and selecting subtitles --- ## INDEX - [METHODS](#methods) - [init](#init-player-options-ready-) - [addChild](#addchild-child-options-) _`inherited`_ - [addClass](#addclass-classtoadd-) _`inherited`_ - [buildCSSClass](#buildcssclass) _`inherited`_ - [children](#children) _`inherited`_ - [contentEl](#contentel) _`inherited`_ - [createEl](#createel-tagname-attributes-) _`inherited`_ - [createItems](#createitems) _`inherited`_ - [dimensions](#dimensions-width-height-) _`inherited`_ - [dispose](#dispose) _`inherited`_ - [el](#el) _`inherited`_ - [enableTouchActivity](#enabletouchactivity) _`inherited`_ - [getChild](#getchild-name-) _`inherited`_ - [getChildById](#getchildbyid-id-) _`inherited`_ - [height](#height-num-skiplisteners-) _`inherited`_ - [hide](#hide) _`inherited`_ - [id](#id) _`inherited`_ - [initChildren](#initchildren) _`inherited`_ - [name](#name) _`inherited`_ - [off](#off-type-fn-) _`inherited`_ - [on](#on-type-fn-) _`inherited`_ - [one](#one-type-fn-) _`inherited`_ - [options](#options-obj-) _`inherited`_ - [player](#player) _`inherited`_ - [ready](#ready-fn-) _`inherited`_ - [removeChild](#removechild-component-) _`inherited`_ - [removeClass](#removeclass-classtoremove-) _`inherited`_ - [show](#show) _`inherited`_ - [trigger](#trigger-type-event-) _`inherited`_ - [triggerReady](#triggerready) _`inherited`_ - [width](#width-num-skiplisteners-) _`inherited`_ - [EVENTS](#events) - [resize](#resize-event) _`inherited`_ --- ## METHODS ### addChild( child, [options] ) > Adds a child component inside this component > > myComponent.el(); > // ->
> myComonent.children(); > // [empty array] > > var myButton = myComponent.addChild('MyButton'); > // ->
myButton
> // -> myButton === myComonent.children()[0]; > > Pass in options for child constructors and options for children of the child > > var myButton = myComponent.addChild('MyButton', { > text: 'Press Me', > children: { > buttonChildExample: { > buttonChildOption: true > } > } > }); ##### PARAMETERS: * __child__ `String|vjs.Component` The class name or instance of a child to add * __options__ `Object` _(OPTIONAL)_ Options, including options to be passed to children of the child. ##### RETURNS: * `vjs.Component` The child component (created by this process if a string was used) _inherited from_: [src/js/component.js#L347](https://github.com/videojs/video.js/blob/master/src/js/component.js#L347) --- ### addClass( classToAdd ) > Add a CSS class name to the component's element ##### PARAMETERS: * __classToAdd__ `String` Classname to add ##### RETURNS: * `vjs.Component` _inherited from_: [src/js/component.js#L663](https://github.com/videojs/video.js/blob/master/src/js/component.js#L663) --- ### buildCSSClass() > Allows sub components to stack CSS class names _inherited from_: [src/js/menu.js#L157](https://github.com/videojs/video.js/blob/master/src/js/menu.js#L157) --- ### children() > Get an array of all child components > > var kids = myComponent.children(); ##### RETURNS: * `Array` The children _inherited from_: [src/js/component.js#L281](https://github.com/videojs/video.js/blob/master/src/js/component.js#L281) --- ### contentEl() > Return the component's DOM element for embedding content. > Will either be el_ or a new element defined in createEl. ##### RETURNS: * `Element` _inherited from_: [src/js/component.js#L224](https://github.com/videojs/video.js/blob/master/src/js/component.js#L224) --- ### createEl( [tagName], [attributes] ) > Create the component's DOM element ##### PARAMETERS: * __tagName__ `String` _(OPTIONAL)_ Element's node type. e.g. 'div' * __attributes__ `Object` _(OPTIONAL)_ An object of element attributes that should be set on the element ##### RETURNS: * `Element` _inherited from_: [src/js/component.js#L194](https://github.com/videojs/video.js/blob/master/src/js/component.js#L194) --- ### createItems() > Create the list of menu items. Specific to each subclass. _inherited from_: [src/js/menu.js#L154](https://github.com/videojs/video.js/blob/master/src/js/menu.js#L154) --- ### dimensions( width, height ) > Set both width and height at the same time ##### PARAMETERS: * __width__ `Number|String` * __height__ `Number|String` ##### RETURNS: * `vjs.Component` The component _inherited from_: [src/js/component.js#L775](https://github.com/videojs/video.js/blob/master/src/js/component.js#L775) --- ### dispose() > Dispose of the component and all child components _inherited from_: [src/js/component.js#L78](https://github.com/videojs/video.js/blob/master/src/js/component.js#L78) --- ### el() > Get the component's DOM element > > var domEl = myComponent.el(); ##### RETURNS: * `Element` _inherited from_: [src/js/component.js#L205](https://github.com/videojs/video.js/blob/master/src/js/component.js#L205) --- ### enableTouchActivity() > Report user touch activity when touch events occur > > User activity is used to determine when controls should show/hide. It's > relatively simple when it comes to mouse events, because any mouse event > should show the controls. So we capture mouse events that bubble up to the > player and report activity when that happens. > > With touch events it isn't as easy. We can't rely on touch events at the > player level, because a tap (touchstart + touchend) on the video itself on > mobile devices is meant to turn controls off (and on). User activity is > checked asynchronously, so what could happen is a tap event on the video > turns the controls off, then the touchend event bubbles up to the player, > which if it reported user activity, would turn the controls right back on. > (We also don't want to completely block touch events from bubbling up) > > Also a touchmove, touch+hold, and anything other than a tap is not supposed > to turn the controls back on on a mobile device. > > Here we're setting the default component behavior to report user activity > whenever touch events happen, and this can be turned off by components that > want touch events to act differently. _inherited from_: [src/js/component.js#L954](https://github.com/videojs/video.js/blob/master/src/js/component.js#L954) --- ### getChild( name ) > Returns a child component with the provided name ##### PARAMETERS: * __name__ ##### RETURNS: * `vjs.Component` _inherited from_: [src/js/component.js#L315](https://github.com/videojs/video.js/blob/master/src/js/component.js#L315) --- ### getChildById( id ) > Returns a child component with the provided ID ##### PARAMETERS: * __id__ ##### RETURNS: * `vjs.Component` _inherited from_: [src/js/component.js#L298](https://github.com/videojs/video.js/blob/master/src/js/component.js#L298) --- ### height( [num], [skipListeners] ) > Get or set the height of the component (CSS values) > > Setting the video tag dimension values only works with values in pixels. > Percent values will not work. > Some percents can be used, but width()/height() will return the number + %, > not the actual computed width/height. ##### PARAMETERS: * __num__ `Number|String` _(OPTIONAL)_ New component height * __skipListeners__ `Boolean` _(OPTIONAL)_ Skip the resize event trigger ##### RETURNS: * `vjs.Component` This component, when setting the height * `Number|String` The height, when getting _inherited from_: [src/js/component.js#L764](https://github.com/videojs/video.js/blob/master/src/js/component.js#L764) --- ### hide() > Hide the component element if currently showing ##### RETURNS: * `vjs.Component` _inherited from_: [src/js/component.js#L694](https://github.com/videojs/video.js/blob/master/src/js/component.js#L694) --- ### id() > Get the component's ID > > var id = myComponent.id(); ##### RETURNS: * `String` _inherited from_: [src/js/component.js#L243](https://github.com/videojs/video.js/blob/master/src/js/component.js#L243) --- ### init( player, options, ready ) ##### PARAMETERS: * __player__ * __options__ * __ready__ _defined in_: [src/js/tracks.js#L892](https://github.com/videojs/video.js/blob/master/src/js/tracks.js#L892) --- ### initChildren() > Add and initialize default child components from options > > // when an instance of MyComponent is created, all children in options > // will be added to the instance by their name strings and options > MyComponent.prototype.options_.children = { > myChildComponent: { > myChildOption: true > } > } > > // Or when creating the component > var myComp = new MyComponent(player, { > children: { > myChildComponent: { > myChildOption: true > } > } > }); > > The children option can also be an Array of child names or > child options objects (that also include a 'name' key). > > var myComp = new MyComponent(player, { > children: [ > 'button', > { > name: 'button', > someOtherOption: true > } > ] > }); _inherited from_: [src/js/component.js#L466](https://github.com/videojs/video.js/blob/master/src/js/component.js#L466) --- ### name() > Get the component's name. The name is often used to reference the component. > > var name = myComponent.name(); ##### RETURNS: * `String` _inherited from_: [src/js/component.js#L262](https://github.com/videojs/video.js/blob/master/src/js/component.js#L262) --- ### off( [type], [fn] ) > Remove an event listener from the component's element > > myComponent.off("eventName", myFunc); ##### PARAMETERS: * __type__ `String` _(OPTIONAL)_ Event type. Without type it will remove all listeners. * __fn__ `Function` _(OPTIONAL)_ Event listener. Without fn it will remove all listeners for a type. ##### RETURNS: * `vjs.Component` _inherited from_: [src/js/component.js#L545](https://github.com/videojs/video.js/blob/master/src/js/component.js#L545) --- ### on( type, fn ) > Add an event listener to this component's element > > var myFunc = function(){ > var myPlayer = this; > // Do something when the event is fired > }; > > myPlayer.on("eventName", myFunc); > > The context will be the component. ##### PARAMETERS: * __type__ `String` The event type e.g. 'click' * __fn__ `Function` The event listener ##### RETURNS: * `vjs.Component` self _inherited from_: [src/js/component.js#L531](https://github.com/videojs/video.js/blob/master/src/js/component.js#L531) --- ### one( type, fn ) > Add an event listener to be triggered only once and then removed ##### PARAMETERS: * __type__ `String` Event type * __fn__ `Function` Event listener ##### RETURNS: * `vjs.Component` _inherited from_: [src/js/component.js#L557](https://github.com/videojs/video.js/blob/master/src/js/component.js#L557) --- ### options( obj ) > Deep merge of options objects > > Whenever a property is an object on both options objects > the two properties will be merged using vjs.obj.deepMerge. > > This is used for merging options for child components. We > want it to be easy to override individual options on a child > component without having to rewrite all the other default options. > > Parent.prototype.options_ = { > children: { > 'childOne': { 'foo': 'bar', 'asdf': 'fdsa' }, > 'childTwo': {}, > 'childThree': {} > } > } > newOptions = { > children: { > 'childOne': { 'foo': 'baz', 'abc': '123' } > 'childTwo': null, > 'childFour': {} > } > } > > this.options(newOptions); > > RESULT > > { > children: { > 'childOne': { 'foo': 'baz', 'asdf': 'fdsa', 'abc': '123' }, > 'childTwo': null, // Disabled. Won't be initialized. > 'childThree': {}, > 'childFour': {} > } > } ##### PARAMETERS: * __obj__ `Object` Object of new option values ##### RETURNS: * `Object` A NEW object of this.options_ and obj merged _inherited from_: [src/js/component.js#L173](https://github.com/videojs/video.js/blob/master/src/js/component.js#L173) --- ### player() > Return the component's player ##### RETURNS: * `vjs.Player` _inherited from_: [src/js/component.js#L120](https://github.com/videojs/video.js/blob/master/src/js/component.js#L120) --- ### ready( fn ) > Bind a listener to the component's ready state > > Different from event listeners in that if the ready event has already happend > it will trigger the function immediately. ##### PARAMETERS: * __fn__ `Function` Ready listener ##### RETURNS: * `vjs.Component` _inherited from_: [src/js/component.js#L616](https://github.com/videojs/video.js/blob/master/src/js/component.js#L616) --- ### removeChild( component ) > Remove a child component from this component's list of children, and the > child component's element from this component's element ##### PARAMETERS: * __component__ `vjs.Component` Component to remove _inherited from_: [src/js/component.js#L405](https://github.com/videojs/video.js/blob/master/src/js/component.js#L405) --- ### removeClass( classToRemove ) > Remove a CSS class name from the component's element ##### PARAMETERS: * __classToRemove__ `String` Classname to remove ##### RETURNS: * `vjs.Component` _inherited from_: [src/js/component.js#L674](https://github.com/videojs/video.js/blob/master/src/js/component.js#L674) --- ### show() > Show the component element if hidden ##### RETURNS: * `vjs.Component` _inherited from_: [src/js/component.js#L684](https://github.com/videojs/video.js/blob/master/src/js/component.js#L684) --- ### trigger( type, event ) > Trigger an event on an element > > myComponent.trigger('eventName'); ##### PARAMETERS: * __type__ `String` The event type to trigger, e.g. 'click' * __event__ `Event|Object` The event object to be passed to the listener ##### RETURNS: * `vjs.Component` self _inherited from_: [src/js/component.js#L571](https://github.com/videojs/video.js/blob/master/src/js/component.js#L571) --- ### triggerReady() > Trigger the ready listeners ##### RETURNS: * `vjs.Component` _inherited from_: [src/js/component.js#L635](https://github.com/videojs/video.js/blob/master/src/js/component.js#L635) --- ### width( [num], skipListeners ) > Set or get the width of the component (CSS values) > > Setting the video tag dimension values only works with values in pixels. > Percent values will not work. > Some percents can be used, but width()/height() will return the number + %, > not the actual computed width/height. ##### PARAMETERS: * __num__ `Number|String` _(OPTIONAL)_ Optional width number * __skipListeners__ `Boolean` Skip the 'resize' event trigger ##### RETURNS: * `vjs.Component` This component, when setting the width * `Number|String` The width, when getting _inherited from_: [src/js/component.js#L747](https://github.com/videojs/video.js/blob/master/src/js/component.js#L747) --- ## EVENTS ### resize `EVENT` > Fired when the width and/or height of the component changes _inherited from_: [src/js/component.js#L854](https://github.com/videojs/video.js/blob/master/src/js/component.js#L854) ---