#

API Docs for: 3.10.3
Show: Inherited Protected Private Deprecated

# Slider Class

Uses

- SliderValueRange
- ClickableRail

Extends SliderBase
Defined in: `slider/js/range-slider.js:10`
Module: range-slider
Parent Module: slider

Create a slider to represent an integer value between a given minimum and maximum. Sliders may be aligned vertically or horizontally, based on the `axis` configuration.

## Constructor

### `Slider`

(

- `config`

)

Defined in `slider/js/range-slider.js:10`

#### Parameters:

- `config` Object

  Configuration object

- Index
- Methods
- Properties
- Attributes
- Events

## Item Index

### Methods

- _addAttrs
- _addLazyAttr
- _afterChildSelectedChange
- _afterDisabledChange
- _afterDrag
- _afterLengthChange
- _afterMaxChange
- _afterMinChange
- _afterValueChange
- _aggregateAttrs
- _applyParsedConfig
- _applyParser
- _attrCfgHash
- _baseDestroy
- _baseInit
- _bindAttrUI
- _bindClickableRail
- _bindDOM
- _bindThumbDD
- _bindUI
- _bindUIChild
- _bindValueLogic
- _calculateFactor
- _cloneDefaultValue
- _createUIEvent
- _decrMajor
- _decrMinor
- _defAttrChangeFn
- _defaultCB
- _defDestroyFn
- _defInitFn
- _defRailMouseDownFn
- _defRenderFn
- _defThumbMoveFn
- _destroyBox
- _destroyHierarchy
- _destroyUIEvents
- _filterAdHocAttrs
- _filterAttrCfgs
- _filterUIEvent
- _fireAttrChange
- _getAttr
- _getAttrCfg
- _getAttrCfgs
- _getAttrInitVal
- _getAttrs
- _getClasses
- _getFullType
- _getHtmlParser
- _getNodeToParse
- _getSrcNode
- _getStateVal
- _getStrings
- _getThumbDestination
- _getType
- _getUIEventNode
- _guid
- _incrMajor
- _incrMinor
- _initAttrHost
- _initAttribute
- _initAttrs
- _initBase
- _initClickableRail
- _initHierarchy
- _initHierarchyData
- _initSliderValueRange
- _initThumbUrl
- _initUIEvent
- _isLazyAttr
- _isUIEvent
- _mapInstance
- _monitor
- _nearestValue
- _normAttrVals
- _offsetToValue
- _onDirectionKey
- _onDocFocus
- _onDocMouseDown
- _onDragEnd
- _onDragStart
- _onLeftRightKey
- _onLeftRightKeyMeta
- _onRailMouseDown
- _onThumbClick
- _parseType
- _preInitEventCfg
- _protectAttrs deprecated
- _publish
- _removeLoadingClassNames
- _renderBox
- _renderBoxClassNames
- _renderUI
- _resolveThumb
- _set
- _setAttr
- _setAttrs
- _setAttrUI
- _setAttrVal
- _setAxis
- _setBB
- _setBox
- _setCB
- _setLength
- _setNewValue
- _setPosition
- _setStateVal
- _setStrings
- _setToMax
- _setToMin
- _strSetter
- _syncAttrUI
- _syncThumbPosition
- _syncUI
- _syncUIChild
- _uiMoveThumb
- _uiSetChildSelected
- _uiSetDim
- _uiSetDisabled
- _uiSetFocused
- _uiSetHeight
- _uiSetRailLength
- _uiSetTabIndex
- _uiSetVisible
- _uiSetWidth
- _uiSizeCB
- _unbindClickableRail
- _unbindDOM
- _unbindUI
- _validateNewMax
- _validateNewMin
- _validTabIndex
- _valueToOffset
- _verifyValue
- addAttr
- addAttrs
- addTarget
- after
- ancestor
- attrAdded
- before
- bindUI
- blur
- bubble
- destroy
- destructor
- detach
- detachAll
- disable
- enable
- fire
- focus
- get
- getAttrs
- getClassName
- getDefaultLocale
- getEvent
- getSkinName
- getString deprecated
- getStrings deprecated
- getTargets
- getValue
- hide
- init
- initializer
- isRoot
- modifyAttr
- next
- on
- once
- onceAfter
- parseType
- previous
- publish
- removeAttr
- removeTarget
- render
- renderer
- renderRail
- renderThumb
- renderUI
- reset
- set
- setAttrs
- setValue
- show
- subscribe deprecated
- syncUI
- toString
- unsubscribe deprecated
- unsubscribeAll deprecated

### Properties

- _allowAdHocAttrs
- _dd
- _factor
- _key
- _UI_ATTRS
- axis
- BOUNDING_TEMPLATE
- CONTENT_TEMPLATE
- DEF_PARENT_NODE
- DEF_UNIT
- name deprecated
- rail
- RAIL_TEMPLATE
- thumb
- THUMB_TEMPLATE
- UI_EVENTS

### Attributes

- axis
- boundingBox
- clickableRail
- contentBox
- destroyed
- disabled
- focused
- height
- id
- initialized
- length
- locale
- majorStep
- max
- min
- minorStep
- render
- rendered
- srcNode
- strings
- tabIndex
- thumbUrl
- value
- visible
- width

### Events

- destroy
- init
- railMouseDown
- render
- slideEnd
- slideStart
- thumbMove
- widget:contentUpdate

## Methods

### `_addAttrs`

(

- `cfgs`
- `values`
- `lazy`

)
private

Inherited from AttributeCore: `attribute/js/AttributeCore.js:836`

Implementation behind the public addAttrs method.

This method is invoked directly by get if it encounters a scenario in which an attribute's valueFn attempts to obtain the value an attribute in the same group of attributes, which has not yet been added (on demand initialization).

#### Parameters:

- `cfgs` Object

  An object with attribute name/configuration pairs.

- `values` Object

  An object with attribute name/value pairs, defining the initial values to apply. Values defined in the cfgs argument will be over-written by values in this argument unless defined as read only.

- `lazy` Boolean

  Whether or not to delay the intialization of these attributes until the first call to get/set. Individual attributes can over-ride this behavior by defining a lazyAdd configuration property in their configuration. See addAttr.

### `_addLazyAttr`

(

- `name`
- `[lazyCfg]`

)
private

Inherited from AttributeCore: `attribute/js/AttributeCore.js:382`

Finishes initializing an attribute which has been lazily added.

#### Parameters:

- `name` Object

  The name of the attribute

- `[lazyCfg]` Object optional

  Optional config hash for the attribute. This is added for performance along the critical path, where the calling method has already obtained lazy config from state.

### `_afterChildSelectedChange`

(

- `event`

)
protected

Inherited from Widget: `widget-child/js/Widget-Child.js:327`

Default attribute change listener for the `selected` attribute, responsible for updating the UI, in response to attribute changes.

#### Parameters:

- `event` EventFacade

  The event facade for the attribute change.

### `_afterDisabledChange`

(

- `e`

)
protected

Inherited from SliderBase: `slider/js/slider-base.js:514`

Locks or unlocks the thumb.

#### Parameters:

- `e` Event

  The disabledChange event object

### `_afterDrag`

(

- `e`

)
protected

Inherited from SliderBase: `slider/js/slider-base.js:467`

Dispatches the `thumbMove` event.

#### Parameters:

- `e` Event

  the `drag:drag` event from the thumb

### `_afterLengthChange`

(

- `e`

)
protected

Inherited from SliderBase: `slider/js/slider-base.js:525`

Handles changes to the `length` attribute. By default, it triggers an update to the UI.

#### Parameters:

- `e` Event

  The lengthChange event object

### `_afterMaxChange`

(

- `e`

)
protected

Inherited from SliderValueRange: `slider/js/value-range.js:204`

Update position according to new max value. If the new max results in the current value being out of range, the value is set to the closer of min or max.

#### Parameters:

- `e` EventFacade

  The `max` attribute change event.

### `_afterMinChange`

(

- `e`

)
protected

Inherited from SliderValueRange: `slider/js/value-range.js:189`

Update position according to new min value. If the new min results in the current value being out of range, the value is set to the closer of min or max.

#### Parameters:

- `e` EventFacade

  The `min` attribute change event.

### `_afterValueChange`

(

- `e`

)
protected

Inherited from SliderValueRange: `slider/js/value-range.js:239`

Propagate change to the thumb position unless the change originated from the thumbMove event.

#### Parameters:

- `e` EventFacade

  The `valueChange` event.

### `_aggregateAttrs`

(

- `allAttrs`

)
Object private

Inherited from BaseCore: `base/js/BaseCore.js:575`

A helper method, used by _initHierarchyData to aggregate attribute configuration across the instances class hierarchy.

The method will protect the attribute configuration value to protect the statically defined default value in ATTRS if required (if the value is an object literal, array or the attribute configuration has cloneDefaultValue set to shallow or deep).

#### Parameters:

- `allAttrs` Array

  An array of ATTRS definitions across classes in the hierarchy (subclass first, Base last)

#### Returns:

Object: The aggregate set of ATTRS definitions for the instance

### `_applyParsedConfig`

() Object protected

Inherited from Widget: `widget/js/WidgetHTMLParser.js:83`

#### Returns:

Object: The merged configuration literal

### `_applyParser`

(

- `config`

)
protected

Inherited from Widget: `widget/js/WidgetHTMLParser.js:92`

Utility method used to apply the `HTML_PARSER` configuration for the instance, to retrieve config data values.

#### Parameters:

- `config` Object

  User configuration object (will be populated with values from Node)

### `_attrCfgHash`

() private

Inherited from BaseCore: `base/js/BaseCore.js:538`

Utility method to define the attribute hash used to filter/whitelist property mixes for this class for iteration performance reasons.

### `_baseDestroy`

() private

Inherited from BaseCore: `base/js/BaseCore.js:309`

Internal destroy implementation for BaseCore

### `_baseInit`

() private

Inherited from BaseCore: `base/js/BaseCore.js:281`

Internal initialization implementation for BaseCore

### `_bindAttrUI`

(

- `attrs`

)
private

Inherited from Widget: `widget/js/Widget.js:1170`

Binds after listeners for the list of attributes provided

#### Parameters:

- `attrs` Array

### `_bindClickableRail`

() protected

Inherited from ClickableRail: `slider/js/clickable-rail.js:51`

Attaches DOM event subscribers to support rail interaction.

### `_bindDOM`

() protected

Inherited from Widget: `widget/js/Widget.js:902`

Sets up DOM listeners, on elements rendered by the widget.

### `_bindThumbDD`

() protected

Inherited from SliderBase: `slider/js/slider-base.js:373`

Makes the thumb draggable and constrains it to the rail.

### `_bindUI`

() protected

Inherited from Widget: `widget/js/Widget.js:883`

Sets up DOM and CustomEvent listeners for the widget.

### `_bindUIChild`

() protected

Inherited from Widget: `widget-child/js/Widget-Child.js:356`

Binds event listeners responsible for updating the UI state in response to WidgetChild related state changes.

This method is invoked after bindUI is invoked for the Widget class using YUI's aop infrastructure.

### `_bindValueLogic`

() protected

Inherited from SliderValueRange but overwritten in `slider/js/slider-base.js:408`

Stub implementation. Override this (presumably in a class extension) to initialize any value logic that depends on the presence of the Drag instance.

### `_calculateFactor`

() protected

Inherited from SliderValueRange: `slider/js/value-range.js:85`

Calculates and caches (range between max and min) / (rail length) for fast runtime calculation of position -> value.

### `_cloneDefaultValue`

(

- `cfg`

)
private

Inherited from BaseCore: `base/js/BaseCore.js:549`

This method assumes that the value has already been checked to be an object. Since it's on a critical path, we don't want to re-do the check.

#### Parameters:

- `cfg` Object

### `_createUIEvent`

(

- `type`

)
private

Inherited from Widget: `widget/js/WidgetUIEvents.js:73`

Binds a delegated DOM event listener of the specified type to the Widget's outtermost DOM element to facilitate the firing of a Custom Event of the same type for the Widget instance.

#### Parameters:

- `type` String

  String representing the name of the event

### `_decrMajor`

() protected

Inherited from SliderBase: `slider/js/slider-base.js:261`

decrements Slider value by a major increment

### `_decrMinor`

() protected

Inherited from SliderBase: `slider/js/slider-base.js:241`

decrements Slider value by a minor increment

### `_defAttrChangeFn`

(

- `e`

)
private

Inherited from AttributeObservable: `attribute/js/AttributeObservable.js:186`

Default function for attribute change events.

#### Parameters:

- `e` EventFacade

  The event object for attribute change events.

### `_defaultCB`

() protected

Inherited from Widget: `widget/js/Widget.js:780`

Returns the default value for the contentBox attribute.

For the Widget class, this will be the srcNode if provided, otherwise null (resulting in a new contentBox node instance being created)

### `_defDestroyFn`

(

- `e`

)
protected

Inherited from BaseObservable: `base/js/BaseObservable.js:190`

Default destroy event handler

#### Parameters:

- `e` EventFacade

  Event object

### `_defInitFn`

(

- `e`

)
protected

Inherited from BaseObservable: `base/js/BaseObservable.js:178`

Default init event handler

#### Parameters:

- `e` EventFacade

  Event object, with a cfg property which refers to the configuration object passed to the constructor.

### `_defRailMouseDownFn`

(

- `e`

)
protected

Inherited from ClickableRail: `slider/js/clickable-rail.js:93`

Default behavior for the railMouseDown event. Centers the thumb at the click location and passes control to the DDM to behave as though the thumb itself were clicked in preparation for a drag operation.

#### Parameters:

- `e` Event

  the EventFacade for the railMouseDown custom event

### `_defRenderFn`

(

- `e`
- `parentNode`

)
protected

Inherited from Widget: `widget/js/Widget.js:571`

Default render handler

#### Parameters:

- `e` EventFacade

  The Event object

- `parentNode` Node

  The parent node to render to, if passed in to the `render` method

### `_defThumbMoveFn`

(

- `e`

)
protected

Inherited from SliderValueRange: `slider/js/value-range.js:111`

Dispatch the new position of the thumb into the value setting operations.

#### Parameters:

- `e` EventFacade

  The host's thumbMove event

### `_destroyBox`

() protected

Inherited from Widget: `widget/js/Widget.js:476`

Removes and destroys the widgets rendered boundingBox, contentBox, and detaches bound UI events.

### `_destroyHierarchy`

() private

Inherited from BaseCore: `base/js/BaseCore.js:721`

Destroys the class hierarchy for this instance by invoking the destructor method on the prototype of each class in the hierarchy.

### `_destroyUIEvents`

() private

Inherited from Widget: `widget/js/WidgetUIEvents.js:20`

Destructor logic for UI event infrastructure, invoked during Widget destruction.

### `_filterAdHocAttrs`

(

- `allAttrs`
- `userVals`

)
Object private

Inherited from BaseCore: `base/js/BaseCore.js:427`

#### Parameters:

- `allAttrs` Object

  The set of all attribute configurations for this instance. Attributes will be removed from this set, if they belong to the filtered class, so that by the time all classes are processed, allCfgs will be empty.

- `userVals` Object

  The config object passed in by the user, from which adhoc attrs are to be filtered.

#### Returns:

Object: The set of adhoc attributes passed in, in the form of an object with attribute name/configuration pairs.

### `_filterAttrCfgs`

(

- `clazz`
- `allCfgs`

)
Object private

Inherited from BaseCore: `base/js/BaseCore.js:356`

A helper method used when processing ATTRS across the class hierarchy during initialization. Returns a disposable object with the attributes defined for the provided class, extracted from the set of all attributes passed in.

#### Parameters:

- `clazz` Function

  The class for which the desired attributes are required.

- `allCfgs` Object

  The set of all attribute configurations for this instance. Attributes will be removed from this set, if they belong to the filtered class, so that by the time all classes are processed, allCfgs will be empty.

#### Returns:

Object: The set of attributes belonging to the class passed in, in the form of an object with attribute name/configuration pairs.

### `_filterUIEvent`

(

- `evt`

)
Boolean private

Inherited from Widget: `widget/js/WidgetUIEvents.js:117`

This method is used to determine if we should fire the UI Event or not. The default implementation makes sure that for nested delegates (nested unrelated widgets), we don't fire the UI event listener more than once at each level.

For example, without the additional filter, if you have nested widgets, each widget will have a delegate listener. If you click on the inner widget, the inner delegate listener's filter will match once, but the outer will match twice (based on delegate's design) - once for the inner widget, and once for the outer.

#### Parameters:

- `evt` DOMEventFacade

#### Returns:

Boolean: true if it's OK to fire the custom UI event, false if not.

### `_fireAttrChange`

(

- `attrName`
- `subAttrName`
- `currVal`
- `newVal`
- `opts`
- `[cfg]`

)
private

Inherited from AttributeObservable: `attribute/js/AttributeObservable.js:120`

Utility method to help setup the event payload and fire the attribute change event.

#### Parameters:

- `attrName` String

  The name of the attribute

- `subAttrName` String

  The full path of the property being changed, if this is a sub-attribute value being change. Otherwise null.

- `currVal` Any

  The current value of the attribute

- `newVal` Any

  The new value of the attribute

- `opts` Object

  Any additional event data to mix into the attribute change event's event facade.

- `[cfg]` Object optional

  The attribute config stored in State, if already available.

### `_getAttr`

(

- `name`

)
Any protected chainable

Inherited from AttributeCore: `attribute/js/AttributeCore.js:543`

Provides the common implementation for the public get method, allowing Attribute hosts to over-ride either method.

See get for argument details.

#### Parameters:

- `name` String

  The name of the attribute.

#### Returns:

Any: The value of the attribute.

### `_getAttrCfg`

(

- `name`

)
Object protected

Inherited from AttributeExtras: `attribute/js/AttributeExtras.js:114`

Returns an object with the configuration properties (and value) for the given attribute. If attrName is not provided, returns the configuration properties for all attributes.

#### Parameters:

- `name` String

  Optional. The attribute name. If not provided, the method will return the configuration for all attributes.

#### Returns:

Object: The configuration properties for the given attribute, or all attributes.

### `_getAttrCfgs`

() Object protected

Inherited from BaseCore: `base/js/BaseCore.js:339`

Returns an aggregated set of attribute configurations, by traversing the class hierarchy.

#### Returns:

Object: The hash of attribute configurations, aggregated across classes in the hierarchy This value is cached the first time the method, or _getClasses, is invoked. Subsequent invocations return the cached value.

### `_getAttrInitVal`

(

- `attr`
- `cfg`
- `initValues`

)
Any private

Inherited from AttributeCore: `attribute/js/AttributeCore.js:945`

Returns the initial value of the given attribute from either the default configuration provided, or the over-ridden value if it exists in the set of initValues provided and the attribute is not read-only.

#### Parameters:

- `attr` String

  The name of the attribute

- `cfg` Object

  The attribute configuration object

- `initValues` Object

  The object with simple and complex attribute name/value pairs returned from _normAttrVals

#### Returns:

Any: The initial value of the attribute.

### `_getAttrs`

(

- `attrs`

)
Object protected

Inherited from AttributeCore: `attribute/js/AttributeCore.js:774`

Implementation behind the public getAttrs method, to get multiple attribute values.

#### Parameters:

- `attrs` Array | boolean

  Optional. An array of attribute names. If omitted, all attribute values are returned. If set to true, all attributes modified from their initial values are returned.

#### Returns:

Object: An object with attribute name/value pairs.

### `_getClasses`

() Function[] protected

Inherited from BaseCore: `base/js/BaseCore.js:323`

Returns the class hierarchy for this object, with BaseCore being the last class in the array.

#### Returns:

Function[]: An array of classes (constructor functions), making up the class hierarchy for this object. This value is cached the first time the method, or _getAttrCfgs, is invoked. Subsequent invocations return the cached value.

### `_getFullType`

(

- `type`

)
String private

Inherited from EventTarget: `event-custom/js/event-target.js:586`

Returns the fully qualified type, given a short type string. That is, returns "foo:bar" when given "bar" if "foo" is the configured prefix.

NOTE: This method, unlike _getType, does no checking of the value passed in, and is designed to be used with the low level _publish() method, for critical path implementations which need to fast-track publish for performance reasons.

#### Parameters:

- `type` String

  The short type to prefix

#### Returns:

String: The prefixed type, if a prefix is set, otherwise the type passed in

### `_getHtmlParser`

() Object private

Inherited from Widget: `widget/js/WidgetHTMLParser.js:149`

Gets the HTMLPARSER definition for this instance, by merging HTMLPARSER definitions across the class hierarchy.

#### Returns:

Object: HTML_PARSER definition for this instance

### `_getNodeToParse`

() Node private

Inherited from Widget: `widget/js/WidgetHTMLParser.js:134`

Determines whether we have a node reference which we should try and parse.

The current implementation does not parse nodes generated from CONTENT_TEMPLATE, only explicitly set srcNode, or contentBox attributes.

#### Returns:

Node: The node reference to apply HTML_PARSER to.

### `_getSrcNode`

() Node protected

Inherited from Widget: `widget/js/WidgetHTMLParser.js:74`

#### Returns:

Node: The Node to apply HTML_PARSER to

### `_getStateVal`

(

- `name`
- `[cfg]`

)
Any private

Inherited from AttributeCore: `attribute/js/AttributeCore.js:600`

Gets the stored value for the attribute, from either the internal state object, or the state proxy if it exits

#### Parameters:

- `name` String

  The name of the attribute

- `[cfg]` Object optional

  Optional config hash for the attribute. This is added for performance along the critical path, where the calling method has already obtained the config from state.

#### Returns:

Any: The stored value of the attribute

### `_getStrings`

(

- `locale`

)
protected

Inherited from Widget: `widget/js/WidgetLocale.js:56`

Returns the strings key/value hash for a paricular locale, without locale lookup applied.

#### Parameters:

- `locale` Object

### `_getThumbDestination`

(

- `e`
- `node`

)
Array protected

Inherited from ClickableRail: `slider/js/clickable-rail.js:169`

Calculates the top left position the thumb should be moved to to align the click XY with the center of the specified node.

#### Parameters:

- `e` DOMEvent

  The mousedown event object

- `node` Node

  The node to position

#### Returns:

Array: the [top, left] pixel position of the destination

### `_getType`

() private

Inherited from EventTarget: `event-custom/js/event-target.js:36`

If the instance has a prefix attribute and the event type is not prefixed, the instance prefix is applied to the supplied type.

### `_getUIEventNode`

() protected

Inherited from Widget but overwritten in `widget-child/js/Widget-Child.js:167`

Returns the node on which to bind delegate listeners.

Override of Widget's implementation of _getUIEventNode() to ensure that all event listeners are bound to the Widget's topmost DOM element. This ensures that the firing of each type of Widget UI event (click, mousedown, etc.) is facilitated by a single, top-level, delegated DOM event listener.

### `_guid`

() protected

Inherited from Widget: `widget/js/Widget.js:1153`

### `_incrMajor`

() protected

Inherited from SliderBase: `slider/js/slider-base.js:251`

increments Slider value by a major increment

### `_incrMinor`

() protected

Inherited from SliderBase: `slider/js/slider-base.js:231`

increments Slider value by a minor increment

### `_initAttrHost`

(

- `attrs`
- `values`
- `lazy`

)
private

Inherited from AttributeCore: `attribute/js/AttributeCore.js:140`

Constructor logic for attributes. Initializes the host state, and sets up the inital attributes passed to the constructor.

#### Parameters:

- `attrs` Object

  The attributes to add during construction (passed through to addAttrs). These can also be defined on the constructor being augmented with Attribute by defining the ATTRS property on the constructor.

- `values` Object

  The initial attribute values to apply (passed through to addAttrs). These are not merged/cloned. The caller is responsible for isolating user provided values if required.

- `lazy` Boolean

  Whether or not to add attributes lazily (passed through to addAttrs).

### `_initAttribute`

() private

Inherited from BaseObservable but overwritten in `base/js/BaseCore.js:254`

Initializes AttributeCore

### `_initAttrs`

(

- `attrs`
- `values`
- `lazy`

)
protected

Inherited from AttributeCore: `attribute/js/AttributeCore.js:1011`

Utility method to set up initial attributes defined during construction, either through the constructor.ATTRS property, or explicitly passed in.

#### Parameters:

- `attrs` Object

  The attributes to add during construction (passed through to addAttrs). These can also be defined on the constructor being augmented with Attribute by defining the ATTRS property on the constructor.

- `values` Object

  The initial attribute values to apply (passed through to addAttrs). These are not merged/cloned. The caller is responsible for isolating user provided values if required.

- `lazy` Boolean

  Whether or not to add attributes lazily (passed through to addAttrs).

### `_initBase`

(

- `config`

)
private

Inherited from BaseCore: `base/js/BaseCore.js:219`

Internal construction logic for BaseCore.

#### Parameters:

- `config` Object

  The constructor configuration object

### `_initClickableRail`

() protected

Inherited from ClickableRail: `slider/js/clickable-rail.js:24`

Initializes the internal state and sets up events.

### `_initHierarchy`

(

- `userVals`

)
private

Inherited from BaseCore: `base/js/BaseCore.js:659`

Initializes the class hierarchy for the instance, which includes initializing attributes for each class defined in the class's static ATTRS property and invoking the initializer method on the prototype of each class in the hierarchy.

#### Parameters:

- `userVals` Object

  Object with configuration property name/value pairs

### `_initHierarchyData`

() private

Inherited from BaseCore: `base/js/BaseCore.js:457`

A helper method used by _getClasses and _getAttrCfgs, which determines both the array of classes and aggregate set of attribute configurations across the class hierarchy for the instance.

### `_initSliderValueRange`

() protected

Inherited from SliderValueRange: `slider/js/value-range.js:46`

Stub for construction logic. Override if extending this class and you need to set something up during the initializer phase.

### `_initThumbUrl`

() protected

Inherited from SliderBase: `slider/js/slider-base.js:608`

Defaults the thumbURL attribute according to the current skin, or "sam" if none can be determined. Horizontal Sliders will have their `thumbUrl` attribute set to

`"/configured/yui/builddir/slider-base/assets/skins/sam/thumb-x.png"`

And vertical thumbs will get

`"/configured/yui/builddir/slider-base/assets/skins/sam/thumb-y.png"`

### `_initUIEvent`

(

- `type`

)
String private

Inherited from Widget: `widget/js/WidgetUIEvents.js:176`

Sets up infrastructure required to fire a UI event.

#### Parameters:

- `type` String

  String representing the name of the event

#### Returns:

String:

### `_isLazyAttr`

(

- `name`

)
Boolean private

Inherited from AttributeCore: `attribute/js/AttributeCore.js:369`

Checks whether or not the attribute is one which has been added lazily and still requires initialization.

#### Parameters:

- `name` String

  The name of the attribute

#### Returns:

Boolean: true if it's a lazily added attribute, false otherwise.

### `_isUIEvent`

(

- `type`

)
String private

Inherited from Widget: `widget/js/WidgetUIEvents.js:143`

Determines if the specified event is a UI event.

#### Parameters:

- `type` String

  String representing the name of the event

#### Returns:

String: Event Returns the name of the UI Event, otherwise undefined.

### `_mapInstance`

(

- `The`

)
protected

Inherited from Widget: `widget/js/Widget.js:414`

Utility method used to add an entry to the boundingBox id to instance map.

This method can be used to populate the instance with lazily created boundingBox Node references.

#### Parameters:

- `The` String

  boundingBox id

### `_monitor`

(

- `what`
- `eventType`
- `o`

)
private

Inherited from EventTarget: `event-custom/js/event-target.js:658`

This is the entry point for the event monitoring system. You can monitor 'attach', 'detach', 'fire', and 'publish'. When configured, these events generate an event. click -> clickattach, clickdetach, click_publish -- these can be subscribed to like other events to monitor the event system. Inividual published events can have monitoring turned on or off (publish can't be turned off before it it published) by setting the events 'monitor' config.

#### Parameters:

- `what` String

  'attach', 'detach', 'fire', or 'publish'

- `eventType` String | CustomEvent

  The prefixed name of the event being monitored, or the CustomEvent object.

- `o` Object

  Information about the event interaction, such as fire() args, subscription category, publish config

### `_nearestValue`

(

- `value`

)
Number protected

Inherited from SliderValueRange: `slider/js/value-range.js:308`

Returns the nearest valid value to the value input. If the provided value is outside the min - max range, accounting for min > max scenarios, the nearest of either min or max is returned. Otherwise, the provided value is returned.

#### Parameters:

- `value` Mixed

  Value to test against current min - max range

#### Returns:

Number: Current min, max, or value if within range

### `_normAttrVals`

(

- `valueHash`

)
Object private

Inherited from AttributeCore: `attribute/js/AttributeCore.js:897`

Utility method to normalize attribute values. The base implementation simply merges the hash to protect the original.

#### Parameters:

- `valueHash` Object

  An object with attribute name/value pairs

#### Returns:

Object: An object literal with 2 properties - "simple" and "complex", containing simple and complex attribute values respectively keyed by the top level attribute name, or null, if valueHash is falsey.

### `_offsetToValue`

(

- `offset`

)
Mixed protected

Inherited from SliderValueRange: `slider/js/value-range.js:126`

Converts a pixel position into a value. Calculates current thumb offset from the leading edge of the rail multiplied by the ratio of `(max - min) / (constraining dim)`.

Override this if you want to use a different value mapping algorithm.

#### Parameters:

- `offset` Number

  X or Y pixel offset

#### Returns:

Mixed: Value corresponding to the provided pixel offset

### `_onDirectionKey`

(

- `e`

)
protected

Inherited from SliderBase: `slider/js/slider-base.js:291`

sets the Slider's value in response to key events. Left and right keys are in a separate method in case an implementation wants to increment values but needs left and right arrow keys for other purposes.

#### Parameters:

- `e` Event

  the key event

### `_onDocFocus`

(

- `evt`

)
protected

Inherited from Widget: `widget/js/Widget.js:1081`

DOM focus event handler, used to sync the state of the Widget with the DOM

#### Parameters:

- `evt` EventFacade

  The event facade for the DOM focus event

### `_onDocMouseDown`

(

- `evt`

)
protected

Inherited from Widget: `widget/js/Widget.js:1068`

"mousedown" event handler for the owner document of the widget's bounding box.

#### Parameters:

- `evt` EventFacade

  The event facade for the DOM focus event

### `_onDragEnd`

(

- `e`

)
protected

Inherited from SliderBase: `slider/js/slider-base.js:486`

Dispatches the `slideEnd` event.

#### Parameters:

- `e` Event

  the `drag:end` event from the thumb

### `_onDragStart`

(

- `e`

)
protected

Inherited from SliderBase: `slider/js/slider-base.js:439`

Dispatches the `slideStart` event.

#### Parameters:

- `e` Event

  the `drag:start` event from the thumb

### `_onLeftRightKey`

(

- `e`

)
protected

Inherited from SliderBase: `slider/js/slider-base.js:327`

sets the Slider's value in response to left or right key events

#### Parameters:

- `e` Event

  the key event

### `_onLeftRightKeyMeta`

(

- `e`

)
protected

Inherited from SliderBase: `slider/js/slider-base.js:348`

sets the Slider's value in response to left or right key events when a meta (mac command/apple) key is also pressed

#### Parameters:

- `e` Event

  the key event

### `_onRailMouseDown`

(

- `e`

)
protected

Inherited from ClickableRail: `slider/js/clickable-rail.js:79`

Dispatches the railMouseDown event.

#### Parameters:

- `e` DOMEvent

  the mousedown event object

### `_onThumbClick`

() protected

Inherited from SliderBase: `slider/js/slider-base.js:184`

Gives focus to the thumb enabling keyboard access after clicking thumb

### `_parseType`

() private

Inherited from EventTarget: `event-custom/js/event-target.js:52`

Returns an array with the detach key (if provided), and the prefixed event name from _getType Y.on('detachcategory| menu:click', fn)

### `_preInitEventCfg`

(

- `config`

)
private

Inherited from BaseObservable: `base/js/BaseObservable.js:98`

Handles the special on, after and target properties which allow the user to easily configure on and after listeners as well as bubble targets during construction, prior to init.

#### Parameters:

- `config` Object

  The user configuration object

### `_protectAttrs`

(

- `attrs`

)
Object deprecated protected

Inherited from AttributeCore: `attribute/js/AttributeCore.js:883`

Deprecated: Use `AttributeCore.protectAttrs()` or `Attribute.protectAttrs()` which are the same static utility method.

Utility method to protect an attribute configuration hash, by merging the entire object and the individual attr config objects.

#### Parameters:

- `attrs` Object

  A hash of attribute to configuration object pairs.

#### Returns:

Object: A protected version of the attrs argument.

### `_publish`

(

- `fullType`
- `etOpts`
- `ceOpts`

)
CustomEvent private

Inherited from EventTarget: `event-custom/js/event-target.js:610`

The low level event publish implementation. It expects all the massaging to have been done outside of this method. e.g. the `type` to `fullType` conversion. It's designed to be a fast path publish, which can be used by critical code paths to improve performance.

#### Parameters:

- `fullType` String

  The prefixed type of the event to publish.

- `etOpts` Object

  The EventTarget specific configuration to mix into the published event.

- `ceOpts` Object

  The publish specific configuration to mix into the published event.

#### Returns:

CustomEvent: The published event. If called without `etOpts` or `ceOpts`, this will be the default `CustomEvent` instance, and can be configured independently.

### `_removeLoadingClassNames`

() protected

Inherited from Widget: `widget/js/Widget.js:862`

Removes class names representative of the widget's loading state from the boundingBox.

### `_renderBox`

(

- `parentNode`

)
private

Inherited from Widget: `widget/js/Widget.js:710`

Helper method to collect the boundingBox and contentBox and append to the provided parentNode, if not already a child. The owner document of the boundingBox, or the owner document of the contentBox will be used as the document into which the Widget is rendered if a parentNode is node is not provided. If both the boundingBox and the contentBox are not currently in the document, and no parentNode is provided, the widget will be rendered to the current document's body.

#### Parameters:

- `parentNode` Node

  The parentNode to render the widget to. If not provided, and both the boundingBox and the contentBox are not currently in the document, the widget will be rendered to the current document's body.

### `_renderBoxClassNames`

() protected

Inherited from Widget: `widget/js/Widget.js:838`

Applies standard class names to the boundingBox and contentBox

### `_renderUI`

() protected

Inherited from Widget: `widget/js/Widget.js:827`

Initializes the UI state for the Widget's bounding/content boxes.

### `_resolveThumb`

(

- `e`

)
DD.Drag protected

Inherited from ClickableRail: `slider/js/clickable-rail.js:149`

Resolves which thumb to actuate if any. Override this if you want to support multiple thumbs. By default, returns the Drag instance for the thumb stored by the Slider.

#### Parameters:

- `e` DOMEvent

  the mousedown event object

#### Returns:

DD.Drag: the Drag instance that should be moved

### `_set`

(

- `name`
- `val`
- `[opts]`

)
Object protected chainable

Inherited from AttributeObservable but overwritten in `attribute/js/AttributeCore.js:427`

Allows setting of readOnly/writeOnce attributes. See set for argument details.

#### Parameters:

- `name` String

  The name of the attribute.

- `val` Any

  The value to set the attribute to.

- `[opts]` Object optional

  Optional data providing the circumstances for the change.

#### Returns:

Object: A reference to the host object.

### `_setAttr`

(

- `name`
- `value`
- `[opts]`
- `force`

)
Object protected chainable

Inherited from AttributeCore: `attribute/js/AttributeCore.js:443`

Provides the common implementation for the public set and protected _set methods.

See set for argument details.

#### Parameters:

- `name` String

  The name of the attribute.

- `value` Any

  The value to set the attribute to.

- `[opts]` Object optional

  Optional data providing the circumstances for the change.

- `force` Boolean

  If true, allows the caller to set values for readOnly or writeOnce attributes which have already been set.

#### Returns:

Object: A reference to the host object.

### `_setAttrs`

(

- `attrs`
- `[opts]`

)
Object protected chainable

Inherited from AttributeObservable but overwritten in `attribute/js/AttributeCore.js:742`

Implementation behind the public setAttrs method, to set multiple attribute values.

#### Parameters:

- `attrs` Object

  An object with attributes name/value pairs.

- `[opts]` Object optional

  Optional data providing the circumstances for the change

#### Returns:

Object: A reference to the host object.

### `_setAttrUI`

(

- `e`

)
private

Inherited from Widget: `widget/js/Widget.js:1201`

#### Parameters:

- `e` EventFacade

### `_setAttrVal`

(

- `attrName`
- `subAttrName`
- `prevVal`
- `newVal`
- `[opts]`
- `[attrCfg]`

)
Booolean private

Inherited from AttributeCore: `attribute/js/AttributeCore.js:640`

Updates the stored value of the attribute in the privately held State object, if validation and setter passes.

#### Parameters:

- `attrName` String

  The attribute name.

- `subAttrName` String

  The sub-attribute name, if setting a sub-attribute property ("x.y.z").

- `prevVal` Any

  The currently stored value of the attribute.

- `newVal` Any

  The value which is going to be stored.

- `[opts]` Object optional

  Optional data providing the circumstances for the change.

- `[attrCfg]` Object optional

  Optional config hash for the attribute. This is added for performance along the critical path, where the calling method has already obtained the config from state.

#### Returns:

Booolean: true if the new attribute value was stored, false if not.

### `_setAxis`

(

- `v`

)
String protected

Inherited from SliderBase: `slider/js/slider-base.js:571`

Validates the axis is "x" or "y" (case insensitive). Converts to lower case for storage.

#### Parameters:

- `v` String

  proposed value for the axis attribute

#### Returns:

String: lowercased first character of the input string

### `_setBB`

(

- `Node/String`

)
private

Inherited from Widget: `widget/js/Widget.js:756`

Setter for the boundingBox attribute

#### Parameters:

- `Node/String` Object

#### Returns:

Node

### `_setBox`

(

- `id`
- `node`
- `template`
- `true`

)
Node private

Inherited from Widget: `widget/js/Widget.js:793`

Helper method to set the bounding/content box, or create it from the provided template if not found.

#### Parameters:

- `id` String

  The node's id attribute

- `node` Node | String

  The node reference

- `template` String

  HTML string template for the node

- `true` Boolean

  if this is the boundingBox, false if it's the contentBox

#### Returns:

Node: The node

### `_setCB`

(

- `node`

)
private

Inherited from Widget: `widget/js/Widget.js:768`

Setter for the contentBox attribute

#### Parameters:

- `node` Node | String

#### Returns:

Node

### `_setLength`

(

- `v`

)
String protected

Inherited from SliderBase: `slider/js/slider-base.js:586`

Ensures the stored length value is a string with a quantity and unit. Unit will be defaulted to "px" if not included. Rejects values less than or equal to 0 and those that don't at least start with a number.

Currently only pixel lengths are supported.

#### Parameters:

- `v` String

  proposed value for the length attribute

#### Returns:

String: the sanitized value

### `_setNewValue`

(

- `value`

)
Number protected

Inherited from SliderValueRange: `slider/js/value-range.js:294`

Restricts new values assigned to `value` attribute to be between the configured `min` and `max`. Rounds to nearest integer value.

#### Parameters:

- `value` Number

  Value assigned to `value` attribute

#### Returns:

Number: Normalized and constrained value

### `_setPosition`

(

- `value`
- `[options]`

)
protected

Inherited from SliderValueRange: `slider/js/value-range.js:253`

Positions the thumb and its ARIA attributes in accordance with the translated value.

#### Parameters:

- `value` Number

  Value to translate to a pixel position

- `[options]` Object optional

  Details object to pass to `_uiMoveThumb`

### `_setStateVal`

(

- `name`
- `value`

)
private

Inherited from AttributeCore: `attribute/js/AttributeCore.js:622`

Sets the stored value for the attribute, in either the internal state object, or the state proxy if it exits

#### Parameters:

- `name` String

  The name of the attribute

- `value` Any

  The value of the attribute

### `_setStrings`

(

- `strings`
- `locale`

)
protected

Inherited from Widget: `widget/js/WidgetLocale.js:35`

Sets strings for a particular locale, merging with any existing strings which may already be defined for the locale.

#### Parameters:

- `strings` Object

  The hash of string key/values to set

- `locale` Object

  The locale for the string values being set

### `_setToMax`

() protected

Inherited from SliderBase: `slider/js/slider-base.js:281`

sets the Slider value to the max value.

### `_setToMin`

() protected

Inherited from SliderBase: `slider/js/slider-base.js:271`

sets the Slider value to the min value.

### `_strSetter`

(

- `strings`

)
String protected

Inherited from Widget: `widget/js/Widget.js:1212`

The default setter for the strings attribute. Merges partial sets into the full string set, to allow users to partial sets of strings

#### Parameters:

- `strings` Object

#### Returns:

String: The full set of strings to set

### `_syncAttrUI`

(

- `attrs`

)
private

Inherited from Widget: `widget/js/Widget.js:1186`

Invokes the _uiSet=ATTR NAME> method for the list of attributes provided

#### Parameters:

- `attrs` Array

### `_syncThumbPosition`

() protected

Inherited from SliderValueRange but overwritten in `slider/js/slider-base.js:560`

Stub implementation. Override this (presumably in a class extension) to ensure the thumb is in the correct position according to the value alogorithm. instance.

### `_syncUI`

() protected

Inherited from Widget: `widget/js/Widget.js:964`

Updates the widget UI to reflect the attribute state.

### `_syncUIChild`

() protected

Inherited from Widget: `widget-child/js/Widget-Child.js:341`

Synchronizes the UI to match the WidgetChild state.

This method is invoked after bindUI is invoked for the Widget class using YUI's aop infrastructure.

### `_uiMoveThumb`

(

- `offset`
- `[options]`

)
protected

Inherited from SliderBase: `slider/js/slider-base.js:418`

Moves the thumb to pixel offset position along the rail.

#### Parameters:

- `offset` Number

  the pixel offset to set as left or top style

- `[options]` Object optional

  Details to send with the `thumbMove` event

### `_uiSetChildSelected`

(

- `selected`

)
protected

Inherited from Widget: `widget-child/js/Widget-Child.js:305`

Updates the UI to reflect the `selected` attribute value.

#### Parameters:

- `selected` Number

  The selected value to be reflected in the UI.

### `_uiSetDim`

(

- `dim`
- `val`

)
private

Inherited from Widget: `widget/js/Widget.js:997`

#### Parameters:

- `dim` String

  The dimension - "width" or "height"

- `val` Number | String

  The value to set

### `_uiSetDisabled`

(

- `val`

)
protected

Inherited from Widget: `widget/js/Widget.js:1018`

Sets the disabled state for the UI

#### Parameters:

- `val` Boolean

### `_uiSetFocused`

(

- `val`
- `src`

)
protected

Inherited from Widget: `widget/js/Widget.js:1029`

Sets the focused state for the UI

#### Parameters:

- `val` Boolean
- `src` String

  String representing the source that triggered an update to the UI.

### `_uiSetHeight`

(

- `val`

)
protected

Inherited from Widget: `widget/js/Widget.js:974`

Sets the height on the widget's bounding box element

#### Parameters:

- `val` String | Number

### `_uiSetRailLength`

(

- `length`

)
protected

Inherited from SliderBase: `slider/js/slider-base.js:149`

Sets the rail length according to the `length` attribute.

#### Parameters:

- `length` String

  the length to apply to the rail style

### `_uiSetTabIndex`

(

- `Number`

)
protected

Inherited from Widget: `widget/js/Widget.js:1051`

Set the tabIndex on the widget's rendered UI

#### Parameters:

- `Number` Object

### `_uiSetVisible`

(

- `val`

)
protected

Inherited from Widget: `widget/js/Widget.js:1007`

Sets the visible state for the UI

#### Parameters:

- `val` Boolean

### `_uiSetWidth`

(

- `val`

)
protected

Inherited from Widget: `widget/js/Widget.js:986`

Sets the width on the widget's bounding box element

#### Parameters:

- `val` String | Number

### `_uiSizeCB`

(

- `expand`

)
protected

Inherited from Widget: `widget/js/Widget.js:701`

#### Parameters:

- `expand` Boolean

### `_unbindClickableRail`

() protected

Inherited from ClickableRail: `slider/js/clickable-rail.js:64`

Detaches DOM event subscribers for cleanup/destruction cycle.

### `_unbindDOM`

() protected

Inherited from Widget: `widget/js/Widget.js:933`

### `_unbindUI`

() protected

Inherited from Widget: `widget/js/Widget.js:894`

### `_validateNewMax`

(

- `value`

)
Boolean protected

Inherited from SliderValueRange: `slider/js/value-range.js:281`

Validates new values assigned to `max` attribute. Numbers are acceptable. Override this to enforce different rules.

#### Parameters:

- `value` Mixed

  Value assigned to `max` attribute.

#### Returns:

Boolean: True for numbers. False otherwise.

### `_validateNewMin`

(

- `value`

)
Boolean protected

Inherited from SliderValueRange: `slider/js/value-range.js:268`

Validates new values assigned to `min` attribute. Numbers are acceptable. Override this to enforce different rules.

#### Parameters:

- `value` Any

  Value assigned to `min` attribute.

#### Returns:

Boolean: True for numbers. False otherwise.

### `_validTabIndex`

(

- `tabIndex`

)
protected

Inherited from Widget: `widget/js/Widget.js:1161`

#### Parameters:

- `tabIndex` Number

### `_valueToOffset`

(

- `val`

)
Number protected

Inherited from SliderValueRange: `slider/js/value-range.js:147`

Converts a value into a pixel offset for use in positioning the thumb according to the reverse of the `_offsetToValue( xy )` operation.

#### Parameters:

- `val` Number

  The value to map to pixel X or Y position

#### Returns:

Number: The pixel offset

### `_verifyValue`

() protected

Inherited from SliderValueRange: `slider/js/value-range.js:219`

Verifies that the current value is within the min - max range. If not, value is set to either min or max, depending on which is closer.

### `addAttr`

(

- `name`
- `config`
- `lazy`

)
Object chainable

Inherited from AttributeCore: `attribute/js/AttributeCore.js:157`

Adds an attribute with the provided configuration to the host object.

The config argument object supports the following properties:

value <Any>
  The initial value to set on the attribute
valueFn <Function | String>

  A function, which will return the initial value to set on the attribute. This is useful for cases where the attribute configuration is defined statically, but needs to reference the host instance ("this") to obtain an initial value. If both the value and valueFn properties are defined, the value returned by the valueFn has precedence over the value property, unless it returns undefined, in which case the value property is used.

  valueFn can also be set to a string, representing the name of the instance method to be used to retrieve the value.

readOnly <boolean>
  Whether or not the attribute is read only. Attributes having readOnly set to true cannot be modified by invoking the set method.
writeOnce <boolean> or <string>
  Whether or not the attribute is "write once". Attributes having writeOnce set to true, can only have their values set once, be it through the default configuration, constructor configuration arguments, or by invoking set.

  The writeOnce attribute can also be set to the string "initOnly", in which case the attribute can only be set during initialization (when used with Base, this means it can only be set during construction)

setter <Function | String>

  The setter function used to massage or normalize the value passed to the set method for the attribute. The value returned by the setter will be the final stored value. Returning Attribute.INVALID_VALUE, from the setter will prevent the value from being stored.

  setter can also be set to a string, representing the name of the instance method to be used as the setter function.

getter <Function | String>

  The getter function used to massage or normalize the value returned by the get method for the attribute. The value returned by the getter function is the value which will be returned to the user when they invoke get.

  getter can also be set to a string, representing the name of the instance method to be used as the getter function.

validator <Function | String>

  The validator function invoked prior to setting the stored value. Returning false from the validator function will prevent the value from being stored.

  validator can also be set to a string, representing the name of the instance method to be used as the validator function.

lazyAdd <boolean>
  Whether or not to delay initialization of the attribute until the first call to get/set it. This flag can be used to over-ride lazy initialization on a per attribute basis, when adding multiple attributes through the addAttrs method.

The setter, getter and validator are invoked with the value and name passed in as the first and second arguments, and with the context ("this") set to the host object.

Configuration properties outside of the list mentioned above are considered private properties used internally by attribute, and are not intended for public use.

#### Parameters:

- `name` String

  The name of the attribute.

- `config` Object

  An object with attribute configuration property/value pairs, specifying the configuration for the attribute.

  NOTE: The configuration object is modified when adding an attribute, so if you need to protect the original values, you will need to merge the object.

- `lazy` Boolean

  (optional) Whether or not to add this attribute lazily (on the first call to get/set).

#### Returns:

Object: A reference to the host object.

### `addAttrs`

(

- `cfgs`
- `values`
- `lazy`

)
Object chainable

Inherited from AttributeCore: `attribute/js/AttributeCore.js:805`

Configures a group of attributes, and sets initial values.

NOTE: This method does not isolate the configuration object by merging/cloning. The caller is responsible for merging/cloning the configuration object if required.

#### Parameters:

- `cfgs` Object

  An object with attribute name/configuration pairs.

- `values` Object

  An object with attribute name/value pairs, defining the initial values to apply. Values defined in the cfgs argument will be over-written by values in this argument unless defined as read only.

- `lazy` Boolean

  Whether or not to delay the intialization of these attributes until the first call to get/set. Individual attributes can over-ride this behavior by defining a lazyAdd configuration property in their configuration. See addAttr.

#### Returns:

Object: A reference to the host object.

### `addTarget`

(

- `o`

)

Inherited from EventTarget: `event-custom/js/event-facade.js:455`

Registers another EventTarget as a bubble target. Bubble order is determined by the order registered. Multiple targets can be specified.

Events can only bubble if emitFacade is true.

Included in the event-custom-complex submodule.

#### Parameters:

- `o` EventTarget

  the target to add

### `after`

(

- `type`
- `fn`
- `[context]`
- `[arg*]`

)
EventHandle

Inherited from EventTarget: `event-custom/js/event-target.js:833`

Subscribe to a custom event hosted by this object. The supplied callback will execute after any listeners add via the subscribe method, and after the default function, if configured for the event, has executed.

#### Parameters:

- `type` String

  The name of the event

- `fn` Function

  The callback to execute in response to the event

- `[context]` Object optional

  Override `this` object in callback

- `[arg*]` Any optional

  0..n additional arguments to supply to the subscriber

#### Returns:

EventHandle: A subscription handle capable of detaching the subscription

### `ancestor`

(

- `depth`

)
Widget

Inherited from Widget: `widget-child/js/Widget-Child.js:279`

Returns the Widget instance at the specified depth.

#### Parameters:

- `depth` Number

  Number representing the depth of the ancestor.

#### Returns:

Widget: Widget instance.

### `attrAdded`

(

- `name`

)
Boolean

Inherited from AttributeCore: `attribute/js/AttributeCore.js:341`

Checks if the given attribute has been added to the host

#### Parameters:

- `name` String

  The name of the attribute to check.

#### Returns:

Boolean: true if an attribute with the given name has been added, false if it hasn't. This method will return true for lazily added attributes.

### `before`

()

Inherited from EventTarget: `event-custom/js/event-target.js:870`

Executes the callback before a DOM event, custom event or method. If the first argument is a function, it is assumed the target is a method. For DOM and custom events, this is an alias for Y.on.

For DOM and custom events: type, callback, context, 0-n arguments

For methods: callback, object (method host), methodName, context, 0-n arguments

#### Returns:

detach handle

### `bindUI`

() protected

Inherited from Widget but overwritten in `slider/js/slider-base.js:195`

Creates the Y.DD.Drag instance used to handle the thumb movement and binds Slider interaction to the configured value model.

### `blur`

() chainable

Inherited from Widget: `widget/js/Widget.js:673`

Causes the Widget to lose focus by setting the "focused" attribute to "false"

### `bubble`

(

- `evt`

)
Boolean

Inherited from EventTarget: `event-custom/js/event-facade.js:507`

Propagate an event. Requires the event-custom-complex module.

#### Parameters:

- `evt` CustomEvent

  the custom event to propagate

#### Returns:

Boolean: the aggregated return value from Event.Custom.fire

### `destroy`

(

- `destroyAllNodes`

)
Widget chainable

Inherited from BaseObservable but overwritten in `widget/js/Widget.js:452`

Destroy lifecycle method. Fires the destroy event, prior to invoking destructors for the class hierarchy. Overrides Base's implementation, to support arguments to destroy

Subscribers to the destroy event can invoke preventDefault on the event object, to prevent destruction from proceeding.

#### Parameters:

- `destroyAllNodes` Boolean

  If true, all nodes contained within the Widget are removed and destroyed. Defaults to false due to potentially high run-time cost.

#### Returns:

Widget: A reference to this object

### `destructor`

() protected

Inherited from Widget: `widget/js/Widget.js:427`

Destructor lifecycle implementation for the Widget class. Purges events attached to the bounding box and content box, removes them from the DOM and removes the Widget from the list of registered widgets.

### `detach`

(

- `type`
- `fn`
- `context`

)
EventTarget

Inherited from EventTarget: `event-custom/js/event-target.js:346`

Detach one or more listeners the from the specified event

#### Parameters:

- `type` String | Object

  Either the handle to the subscriber or the type of event. If the type is not specified, it will attempt to remove the listener from all hosted events.

- `fn` Function

  The subscribed function to unsubscribe, if not supplied, all subscribers will be removed.

- `context` Object

  The custom object passed to subscribe. This is optional, but if supplied will be used to disambiguate multiple listeners that are the same (e.g., you subscribe many object using a function that lives on the prototype)

#### Returns:

EventTarget: the host

### `detachAll`

(

- `type`

)

Inherited from EventTarget: `event-custom/js/event-target.js:469`

Removes all listeners from the specified event. If the event type is not specified, all listeners from all hosted custom events will be removed.

#### Parameters:

- `type` String

  The type, or name of the event

### `disable`

() chainable

Inherited from Widget: `widget/js/Widget.js:692`

Set the Widget's "disabled" attribute to "true".

### `enable`

() chainable

Inherited from Widget: `widget/js/Widget.js:683`

Set the Widget's "disabled" attribute to "false".

### `fire`

(

- `type`
- `arguments`

)
EventTarget

Inherited from EventTarget: `event-custom/js/event-target.js:695`

Fire a custom event by name. The callback functions will be executed from the context specified when the event was created, and with the following parameters.

If the custom event object hasn't been created, then the event hasn't been published and it has no subscribers. For performance sake, we immediate exit in this case. This means the event won't bubble, so if the intention is that a bubble target be notified, the event must be published on this object first.

The first argument is the event type, and any additional arguments are passed to the listeners as parameters. If the first of these is an object literal, and the event is configured to emit an event facade, that object is mixed into the event facade and the facade is provided in place of the original object.

#### Parameters:

- `type` String | Object

  The type of the event, or an object that contains a 'type' property.

- `arguments` Object*

  an arbitrary set of parameters to pass to the handler. If the first of these is an object literal and the event is configured to emit an event facade, the event facade will replace that parameter after the properties the object literal contains are copied to the event facade.

#### Returns:

EventTarget: the event host

### `focus`

() chainable

Inherited from Widget: `widget/js/Widget.js:663`

Causes the Widget to receive the focus by setting the "focused" attribute to "true".

### `get`

(

- `name`

)
Any

Inherited from AttributeCore: `attribute/js/AttributeCore.js:353`

Returns the current value of the attribute. If the attribute has been configured with a 'getter' function, this method will delegate to the 'getter' to obtain the value of the attribute.

#### Parameters:

- `name` String

  The name of the attribute. If the value of the attribute is an Object, dot notation can be used to obtain the value of a property of the object (e.g. `get("x.y.z")`)

#### Returns:

Any: The value of the attribute

### `getAttrs`

(

- `attrs`

)
Object

Inherited from AttributeCore: `attribute/js/AttributeCore.js:762`

Gets multiple attribute values.

#### Parameters:

- `attrs` Array | boolean

  Optional. An array of attribute names. If omitted, all attribute values are returned. If set to true, all attributes modified from their initial values are returned.

#### Returns:

Object: An object with attribute name/value pairs.

### `getClassName`

(

- `args`

)

Inherited from Widget but overwritten in `widget/js/Widget.js:309`

Generate a standard prefixed classname for the Widget, prefixed by the default prefix defined by the `Y.config.classNamePrefix` attribute used by `ClassNameManager` and `Widget.NAME.toLowerCase()` (e.g. "yui-widget-xxxxx-yyyyy", based on default values for the prefix and widget class name).

The instance based version of this method can be used to generate standard prefixed classnames, based on the instances NAME, as opposed to Widget.NAME. This method should be used when you need to use a constant class name across different types instances.

#### Parameters:

- `args` String* multiple

  0..n strings which should be concatenated, using the default separator defined by ClassNameManager, to create the class name

### `getDefaultLocale`

() String

Inherited from Widget: `widget/js/WidgetLocale.js:153`

Returns the default locale for the widget (the locale value defined by the widget class, or provided by the user during construction).

#### Returns:

String: The default locale for the widget

### `getEvent`

(

- `type`
- `prefixed`

)
CustomEvent

Inherited from EventTarget: `event-custom/js/event-target.js:814`

Returns the custom event of the provided type has been created, a falsy value otherwise

#### Parameters:

- `type` String

  the type, or name of the event

- `prefixed` String

  if true, the type is prefixed already

#### Returns:

CustomEvent: the custom event or null

### `getSkinName`

(

- `[skinPrefix]`

)
String

Inherited from Widget: `widget/js/WidgetSkin.js:12`

Returns the name of the skin that's currently applied to the widget.

Searches up the Widget's ancestor axis for, by default, a class yui3-skin-(name), and returns the (name) portion. Otherwise, returns null.

This is only really useful after the widget's DOM structure is in the document, either by render or by progressive enhancement.

#### Parameters:

- `[skinPrefix]` String optional

  The prefix which the implementation uses for the skin ("yui3-skin-" is the default).

  NOTE: skinPrefix will be used as part of a regular expression:

      new RegExp('\\b' + skinPrefix + '(\\S+)')

  Although an unlikely use case, literal characters which may result in an invalid regular expression should be escaped.

#### Returns:

String: The name of the skin, or null, if a matching skin class is not found.

### `getString`

(

- `key`

)
String deprecated

Inherited from Widget but overwritten in `widget/js/Widget.js:1225`

Deprecated: Used by deprecated WidgetLocale implementations.

Helper method to get a specific string value

#### Parameters:

- `key` String

#### Returns:

String: The string

### `getStrings`

(

- `key`

)
String deprecated

Inherited from Widget but overwritten in `widget/js/Widget.js:1237`

Deprecated: Used by deprecated WidgetLocale implementations.

Helper method to get the complete set of strings for the widget

#### Parameters:

- `key` String

#### Returns:

String: The strings

### `getTargets`

()

Inherited from EventTarget: `event-custom/js/event-facade.js:479`

Returns an array of bubble targets for this object.

#### Returns:

EventTarget[]

### `getValue`

() Number

Inherited from SliderValueRange: `slider/js/value-range.js:164`

Returns the current value. Override this if you want to introduce output formatting. Otherwise equivalent to slider.get( "value" );

#### Returns:

Number:

### `hide`

() chainable

Inherited from Widget: `widget/js/Widget.js:645`

Hides the Widget by setting the "visible" attribute to "false".

### `init`

(

- `cfg`

)
BaseCore chainable

Inherited from BaseObservable but overwritten in `base/js/BaseCore.js:264`

Init lifecycle method, invoked during construction. Sets up attributes and invokes initializers for the class hierarchy.

#### Parameters:

- `cfg` Object

  Object with configuration property name/value pairs

#### Returns:

BaseCore: A reference to this object

### `initializer`

() protected

Inherited from Widget but overwritten in `slider/js/slider-base.js:31`

Construction logic executed during Slider instantiation.

### `isRoot`

() Boolean

Inherited from Widget: `widget-child/js/Widget-Child.js:267`

Determines if the Widget is the root Widget in the object hierarchy.

#### Returns:

Boolean: Boolean indicating if Widget is the root Widget in the object hierarchy.

### `modifyAttr`

(

- `name`
- `config`

)

Inherited from AttributeExtras: `attribute/js/AttributeExtras.js:40`

Updates the configuration of an attribute which has already been added.

The properties which can be modified through this interface are limited to the following subset of attributes, which can be safely modified after a value has already been set on the attribute: readOnly, writeOnce, broadcast and getter.

#### Parameters:

- `name` String

  The name of the attribute whose configuration is to be updated.

- `config` Object

  An object with configuration property/value pairs, specifying the configuration properties to modify.

### `next`

(

- `circular`

)
Widget

Inherited from Widget: `widget-child/js/Widget-Child.js:191`

Returns the Widget's next sibling.

#### Parameters:

- `circular` Boolean

  Boolean indicating if the parent's first child should be returned if the child has no next sibling.

#### Returns:

Widget: Widget instance.

### `on`

(

- `type`
- `fn`
- `[context]`
- `[arg*]`

)
EventHandle

Inherited from EventTarget: `event-custom/js/event-target.js:188`

Subscribe a callback function to a custom event fired by this object or from an object that bubbles its events to this object.

Callback functions for events published with `emitFacade = true` will receive an `EventFacade` as the first argument (typically named "e"). These callbacks can then call `e.preventDefault()` to disable the behavior published to that event's `defaultFn`. See the `EventFacade` API for all available properties and methods. Subscribers to non-`emitFacade` events will receive the arguments passed to `fire()` after the event name.

To subscribe to multiple events at once, pass an object as the first argument, where the key:value pairs correspond to the eventName:callback, or pass an array of event names as the first argument to subscribe to all listed events with the same callback.

Returning `false` from a callback is supported as an alternative to calling `e.preventDefault(); e.stopPropagation();`. However, it is recommended to use the event methods whenever possible.

#### Parameters:

- `type` String

  The name of the event

- `fn` Function

  The callback to execute in response to the event

- `[context]` Object optional

  Override `this` object in callback

- `[arg*]` Any optional

  0..n additional arguments to supply to the subscriber

#### Returns:

EventHandle: A subscription handle capable of detaching that subscription

### `once`

(

- `type`
- `fn`
- `[context]`
- `[arg*]`

)
EventHandle

Inherited from EventTarget: `event-custom/js/event-target.js:124`

Listen to a custom event hosted by this object one time. This is the equivalent to `on` except the listener is immediatelly detached when it is executed.

#### Parameters:

- `type` String

  The name of the event

- `fn` Function

  The callback to execute in response to the event

- `[context]` Object optional

  Override `this` object in callback

- `[arg*]` Any optional

  0..n additional arguments to supply to the subscriber

#### Returns:

EventHandle: A subscription handle capable of detaching the subscription

### `onceAfter`

(

- `type`
- `fn`
- `[context]`
- `[arg*]`

)
EventHandle

Inherited from EventTarget: `event-custom/js/event-target.js:146`

Listen to a custom event hosted by this object one time. This is the equivalent to `after` except the listener is immediatelly detached when it is executed.

#### Parameters:

- `type` String

  The name of the event

- `fn` Function

  The callback to execute in response to the event

- `[context]` Object optional

  Override `this` object in callback

- `[arg*]` Any optional

  0..n additional arguments to supply to the subscriber

#### Returns:

EventHandle: A subscription handle capable of detaching that subscription

### `parseType`

(

- `type`
- `[pre=this._yuievt.config.prefix]`

)
Array

Inherited from EventTarget: `event-custom/js/event-target.js:168`

Available since 3.3.0

Takes the type parameter passed to 'on' and parses out the various pieces that could be included in the type. If the event type is passed without a prefix, it will be expanded to include the prefix one is supplied or the event target is configured with a default prefix.

#### Parameters:

- `type` String

  the type

- `[pre=this._yuievt.config.prefix]` String optional

  the prefix

#### Returns:

Array: an array containing: * the detach category, if supplied, * the prefixed event type, * whether or not this is an after listener, * the supplied event type

### `previous`

(

- `circular`

)
Widget

Inherited from Widget: `widget-child/js/Widget-Child.js:216`

Returns the Widget's previous sibling.

#### Parameters:

- `circular` Boolean

  Boolean indicating if the parent's last child should be returned if the child has no previous sibling.

#### Returns:

Widget: Widget instance.

### `publish`

(

- `type`
- `opts`

)
CustomEvent

Inherited from EventTarget: `event-custom/js/event-target.js:493`

Creates a new custom event of the specified type. If a custom event by that name already exists, it will not be re-created. In either case the custom event is returned.

#### Parameters:

- `type` String

  the type, or name of the event

- `opts` Object

  optional config params. Valid properties are:

  - 'broadcast': whether or not the YUI instance and YUI global are notified when the event is fired (false)
  - 'bubbles': whether or not this event bubbles (true) Events can only bubble if emitFacade is true.
  - 'context': the default execution context for the listeners (this)
  - 'defaultFn': the default function to execute when this event fires if preventDefault was not called
  - 'emitFacade': whether or not this event emits a facade (false)
  - 'prefix': the prefix for this targets events, e.g., 'menu' in 'menu:click'
  - 'fireOnce': if an event is configured to fire once, new subscribers after the fire will be notified immediately.
  - 'async': fireOnce event listeners will fire synchronously if the event has already fired unless async is true.
  - 'preventable': whether or not preventDefault() has an effect (true)
  - 'preventedFn': a function that is executed when preventDefault is called
  - 'queuable': whether or not this event can be queued during bubbling (false)
  - 'silent': if silent is true, debug messages are not provided for this event.
  - 'stoppedFn': a function that is executed when stopPropagation is called

  - 'monitored': specifies whether or not this event should send notifications about when the event has been attached, detached, or published.
  - 'type': the event type (valid option if not provided as the first parameter to publish)

#### Returns:

CustomEvent: the custom event

### `removeAttr`

(

- `name`

)

Inherited from AttributeExtras: `attribute/js/AttributeExtras.js:79`

Removes an attribute from the host object

#### Parameters:

- `name` String

  The name of the attribute to be removed.

### `removeTarget`

(

- `o`

)

Inherited from EventTarget: `event-custom/js/event-facade.js:489`

Removes a bubble target

#### Parameters:

- `o` EventTarget

  the target to remove

### `render`

(

- `parentNode`

)
final chainable

Inherited from Widget: `widget/js/Widget.js:513`

Establishes the initial DOM for the widget. Invoking this method will lead to the creating of all DOM elements for the widget (or the manipulation of existing DOM elements for the progressive enhancement use case).

This method should only be invoked once for an initialized widget.

It delegates to the widget specific renderer method to do the actual work.

#### Parameters:

- `parentNode` Object | String

  Optional. The Node under which the Widget is to be rendered. This can be a Node instance or a CSS selector string.

  If the selector string returns more than one Node, the first node will be used as the parentNode. NOTE: This argument is required if both the boundingBox and contentBox are not currently in the document. If it's not provided, the Widget will be rendered to the body of the current document in this case.

### `renderer`

() protected

Inherited from Widget: `widget/js/Widget.js:588`

Creates DOM (or manipulates DOM for progressive enhancement) This method is invoked by render() and is not chained automatically for the class hierarchy (unlike initializer, destructor) so it should be chained manually for subclasses if required.

### `renderRail`

() Node

Inherited from SliderBase: `slider/js/slider-base.js:129`

Creates the Slider rail DOM subtree for insertion into the Slider's `contentBox`. Override this method if you want to provide the rail element (presumably from existing markup).

#### Returns:

Node: the rail node subtree

### `renderThumb`

() Node

Inherited from SliderBase: `slider/js/slider-base.js:160`

Creates the Slider thumb DOM subtree for insertion into the Slider's rail. Override this method if you want to provide the thumb element (presumably from existing markup).

#### Returns:

Node: the thumb node subtree

### `renderUI`

() protected

Inherited from Widget but overwritten in `slider/js/slider-base.js:92`

Create the DOM structure for the Slider.

### `reset`

(

- `name`

)
Object chainable

Inherited from AttributeExtras: `attribute/js/AttributeExtras.js:89`

Resets the attribute (or all attributes) to its initial value, as long as the attribute is not readOnly, or writeOnce.

#### Parameters:

- `name` String

  Optional. The name of the attribute to reset. If omitted, all attributes are reset.

#### Returns:

Object: A reference to the host object.

### `set`

(

- `name`
- `value`
- `[opts]`

)
Object chainable

Inherited from AttributeObservable but overwritten in `attribute/js/AttributeCore.js:410`

Sets the value of an attribute.

#### Parameters:

- `name` String

  The name of the attribute. If the current value of the attribute is an Object, dot notation can be used to set the value of a property within the object (e.g. `set("x.y.z", 5)`).

- `value` Any

  The value to set the attribute to.

- `[opts]` Object optional

  Optional data providing the circumstances for the change.

#### Returns:

Object: A reference to the host object.

### `setAttrs`

(

- `attrs`
- `[opts]`

)
Object chainable

Inherited from AttributeObservable but overwritten in `attribute/js/AttributeCore.js:729`

Sets multiple attribute values.

#### Parameters:

- `attrs` Object

  An object with attributes name/value pairs.

- `[opts]` Object optional

  Optional data providing the circumstances for the change.

#### Returns:

Object: A reference to the host object.

### `setValue`

(

- `val`

)
Slider chainable

Inherited from SliderValueRange: `slider/js/value-range.js:175`

Updates the current value. Override this if you want to introduce input value parsing or preprocessing. Otherwise equivalent to slider.set( "value", v );

#### Parameters:

- `val` Number

  The new value

#### Returns:

Slider:

### `show`

() chainable

Inherited from Widget: `widget/js/Widget.js:654`

Shows the Widget by setting the "visible" attribute to "true".

### `subscribe`

() deprecated

Inherited from EventTarget: `event-custom/js/event-target.js:336`

Deprecated: use on

subscribe to an event

### `syncUI`

()

Inherited from Widget but overwritten in `slider/js/slider-base.js:541`

Synchronizes the DOM state with the attribute settings.

### `toString`

() String

Inherited from BaseCore but overwritten in `widget/js/Widget.js:1107`

Generic toString implementation for all widgets.

#### Returns:

String: The default string value for the widget [ displays the NAME of the instance, and the unique id ]

### `unsubscribe`

() deprecated

Inherited from EventTarget: `event-custom/js/event-target.js:459`

Deprecated: use detach

detach a listener

### `unsubscribeAll`

(

- `type`

)
deprecated

Inherited from EventTarget: `event-custom/js/event-target.js:480`

Deprecated: use detachAll

Removes all listeners from the specified event. If the event type is not specified, all listeners from all hosted custom events will be removed.

#### Parameters:

- `type` String

  The type, or name of the event

## Properties

### `_allowAdHocAttrs`

Boolean protected

Inherited from BaseCore: `base/js/BaseCore.js:100`

This property controls whether or not instances of this class should allow users to add ad-hoc attributes through the constructor configuration hash.

AdHoc attributes are attributes which are not defined by the class, and are not handled by the MyClass.NONATTRS_CFG

Default: undefined (false)

### `_dd`

DD.Drag protected

Inherited from SliderBase: `slider/js/slider-base.js:385`

The DD.Drag instance linked to the thumb node.

### `_factor`

Number protected

Inherited from SliderValueRange: `slider/js/value-range.js:37`

Factor used to translate value -> position -> value.

### `_key`

Object protected

Inherited from SliderBase: `slider/js/slider-base.js:50`

Cached fast access map for DOM properties and attributes that pertain to accessing dimensional or positioning information according to the Slider's axis (e.g. "height" vs. "width"). Extension classes should add to this collection for axis related strings if necessary.

### `_UI_ATTRS`

Object private

Inherited from Widget: `widget/js/Widget.js:1249`

The lists of UI attributes to bind and sync for widget's _bindUI and _syncUI implementations

### `axis`

String protected

Inherited from SliderBase: `slider/js/slider-base.js:38`

The configured axis, stored for fast lookup since it's a writeOnce attribute. This is for use by extension classes. For implementation code, use `get( "axis" )` for authoritative source. Never write to this property.

### `BOUNDING_TEMPLATE`

String

Inherited from Widget but overwritten in `slider/js/slider-base.js:637`

Bounding box template that will contain the Slider's DOM subtree. <span>s are used to support inline-block styling.

Default: &lt;span>&lt;/span>

### `CONTENT_TEMPLATE`

String

Inherited from Widget but overwritten in `slider/js/slider-base.js:646`

Content box template that will contain the Slider's rail and thumb.

Default: &lt;span>&lt;/span>

### `DEF_PARENT_NODE`

String | Node

Inherited from Widget: `widget/js/Widget.js:1126`

Default node to render the bounding box to. If not set, will default to the current document body.

### `DEF_UNIT`

String

Inherited from Widget: `widget/js/Widget.js:1118`

Default unit to use for dimension values

### `name`

String deprecated

Inherited from BaseCore: `base/js/BaseCore.js:242`

Deprecated: Use this.constructor.NAME

The string used to identify the class of this object.

### `rail`

Node

Inherited from SliderBase: `slider/js/slider-base.js:101`

The Node instance of the Slider's rail element. Do not write to this property.

### `RAIL_TEMPLATE`

String

Inherited from SliderBase: `slider/js/slider-base.js:655`

Rail template that will contain the end caps and the thumb. {placeholder}s are used for template substitution at render time.

Default: &lt;span class="{railClass}">&lt;span class="{railMinCapClass}">&lt;/span>&lt;span class="{railMaxCapClass}">&lt;/span>&lt;/span>

### `thumb`

Node

Inherited from SliderBase: `slider/js/slider-base.js:112`

The Node instance of the Slider's thumb element. Do not write to this property.

### `THUMB_TEMPLATE`

String

Inherited from SliderBase: `slider/js/slider-base.js:668`

Thumb template that will contain the thumb image and shadow. <img> tags are used instead of background images to avoid a flicker bug in IE. {placeholder}s are used for template substitution at render time.

Default: &lt;span class="{thumbClass}" tabindex="-1">&lt;img src="{thumbShadowUrl}" alt="Slider thumb shadow" class="{thumbShadowClass}">&lt;img src="{thumbImageUrl}" alt="Slider thumb" class="{thumbImageClass}">&lt;/span>

### `UI_EVENTS`

Object

Inherited from Widget: `widget/js/WidgetUIEvents.js:52`

Map of DOM events that should be fired as Custom Events by the Widget instance.

## Attributes

### `axis`

String

Inherited from SliderBase: `slider/js/slider-base.js:713`

Axis upon which the Slider's thumb moves. "x" for horizontal, "y" for vertical.

Default: &quot;x&quot;

#### Fires event `axisChange`

Fires when the value for the configuration attribute `axis` is changed. You can listen for the event using the `on` method if you wish to be notified before the attribute's value has changed, or using the `after` method if you wish to be notified after the attribute's value has changed.

#### Parameters:

- `e` EventFacade
  An Event Facade object with the following attribute-specific properties added:
  - `prevVal` Any
    The value of the attribute, prior to it being set.
  - `newVal` Any
    The value the attribute is to be set to.
  - `attrName` String
    The name of the attribute being set.
  - `subAttrName` String
    If setting a property within the attribute's value, the name of the sub-attribute property being set.

### `boundingBox`

String | Node

Inherited from Widget: `widget/js/Widget.js:175`

The outermost DOM node for the Widget, used for sizing and positioning of a Widget as well as a containing element for any decorator elements used for skinning.

#### Fires event `boundingBoxChange`

Fires when the value for the configuration attribute `boundingBox` is changed. You can listen for the event using the `on` method if you wish to be notified before the attribute's value has changed, or using the `after` method if you wish to be notified after the attribute's value has changed.

#### Parameters:

- `e` EventFacade
  An Event Facade object with the following attribute-specific properties added:
  - `prevVal` Any
    The value of the attribute, prior to it being set.
  - `newVal` Any
    The value the attribute is to be set to.
  - `attrName` String
    The name of the attribute being set.
  - `subAttrName` String
    If setting a property within the attribute's value, the name of the sub-attribute property being set.

### `clickableRail`

Boolean

Inherited from ClickableRail: `slider/js/clickable-rail.js:194`

Enable or disable clickable rail support.

Default: true

#### Fires event `clickableRailChange`

Fires when the value for the configuration attribute `clickableRail` is changed. You can listen for the event using the `on` method if you wish to be notified before the attribute's value has changed, or using the `after` method if you wish to be notified after the attribute's value has changed.

#### Parameters:

- `e` EventFacade
  An Event Facade object with the following attribute-specific properties added:
  - `prevVal` Any
    The value of the attribute, prior to it being set.
  - `newVal` Any
    The value the attribute is to be set to.
  - `attrName` String
    The name of the attribute being set.
  - `subAttrName` String
    If setting a property within the attribute's value, the name of the sub-attribute property being set.

### `contentBox`

String | Node

Inherited from Widget: `widget/js/Widget.js:189`

A DOM node that is a direct descendant of a Widget's bounding box that houses its content.

#### Fires event `contentBoxChange`

Fires when the value for the configuration attribute `contentBox` is changed. You can listen for the event using the `on` method if you wish to be notified before the attribute's value has changed, or using the `after` method if you wish to be notified after the attribute's value has changed.

#### Parameters:

- `e` EventFacade
  An Event Facade object with the following attribute-specific properties added:
  - `prevVal` Any
    The value of the attribute, prior to it being set.
  - `newVal` Any
    The value the attribute is to be set to.
  - `attrName` String
    The name of the attribute being set.
  - `subAttrName` String
    If setting a property within the attribute's value, the name of the sub-attribute property being set.

### `destroyed`

Boolean readonly

Inherited from BaseCore: `base/js/BaseCore.js:157`

Flag indicating whether or not this object has been through the destroy lifecycle phase.

Default: false

#### Fires event `destroyedChange`

Fires when the value for the configuration attribute `destroyed` is changed. You can listen for the event using the `on` method if you wish to be notified before the attribute's value has changed, or using the `after` method if you wish to be notified after the attribute's value has changed.

#### Parameters:

- `e` EventFacade
  An Event Facade object with the following attribute-specific properties added:
  - `prevVal` Any
    The value of the attribute, prior to it being set.
  - `newVal` Any
    The value the attribute is to be set to.
  - `attrName` String
    The name of the attribute being set.
  - `subAttrName` String
    If setting a property within the attribute's value, the name of the sub-attribute property being set.

### `disabled`

Boolean

Inherited from Widget: `widget/js/Widget.js:231`

Boolean indicating if the Widget should be disabled. The disabled implementation is left to the specific classes extending widget.

Default: false

#### Fires event `disabledChange`

Fires when the value for the configuration attribute `disabled` is changed. You can listen for the event using the `on` method if you wish to be notified before the attribute's value has changed, or using the `after` method if you wish to be notified after the attribute's value has changed.

#### Parameters:

- `e` EventFacade
  An Event Facade object with the following attribute-specific properties added:
  - `prevVal` Any
    The value of the attribute, prior to it being set.
  - `newVal` Any
    The value the attribute is to be set to.
  - `attrName` String
    The name of the attribute being set.
  - `subAttrName` String
    If setting a property within the attribute's value, the name of the sub-attribute property being set.

### `focused`

Boolean readonly

Inherited from Widget: `widget/js/Widget.js:218`

Boolean indicating if the Widget, or one of its descendants, has focus.

Default: false

#### Fires event `focusedChange`

Fires when the value for the configuration attribute `focused` is changed. You can listen for the event using the `on` method if you wish to be notified before the attribute's value has changed, or using the `after` method if you wish to be notified after the attribute's value has changed.

#### Parameters:

- `e` EventFacade
  An Event Facade object with the following attribute-specific properties added:
  - `prevVal` Any
    The value of the attribute, prior to it being set.
  - `newVal` Any
    The value the attribute is to be set to.
  - `attrName` String
    The name of the attribute being set.
  - `subAttrName` String
    If setting a property within the attribute's value, the name of the sub-attribute property being set.

### `height`

String | Number

Inherited from Widget: `widget/js/Widget.js:252`

String with units, or number, representing the height of the Widget. If a number is provided, the default unit, defined by the Widgets DEF_UNIT, property is used.

Default: EMPTY_STR

#### Fires event `heightChange`

Fires when the value for the configuration attribute `height` is changed. You can listen for the event using the `on` method if you wish to be notified before the attribute's value has changed, or using the `after` method if you wish to be notified after the attribute's value has changed.

#### Parameters:

- `e` EventFacade
  An Event Facade object with the following attribute-specific properties added:
  - `prevVal` Any
    The value of the attribute, prior to it being set.
  - `newVal` Any
    The value the attribute is to be set to.
  - `attrName` String
    The name of the attribute being set.
  - `subAttrName` String
    If setting a property within the attribute's value, the name of the sub-attribute property being set.

### `id`

String

Inherited from Widget: `widget/js/Widget.js:149`

Default: Generated using guid()

#### Fires event `idChange`

Fires when the value for the configuration attribute `id` is changed. You can listen for the event using the `on` method if you wish to be notified before the attribute's value has changed, or using the `after` method if you wish to be notified after the attribute's value has changed.

#### Parameters:

- `e` EventFacade
  An Event Facade object with the following attribute-specific properties added:
  - `prevVal` Any
    The value of the attribute, prior to it being set.
  - `newVal` Any
    The value the attribute is to be set to.
  - `attrName` String
    The name of the attribute being set.
  - `subAttrName` String
    If setting a property within the attribute's value, the name of the sub-attribute property being set.

### `initialized`

Boolean readonly

Inherited from BaseCore: `base/js/BaseCore.js:143`

Flag indicating whether or not this object has been through the init lifecycle phase.

Default: false

#### Fires event `initializedChange`

Fires when the value for the configuration attribute `initialized` is changed. You can listen for the event using the `on` method if you wish to be notified before the attribute's value has changed, or using the `after` method if you wish to be notified after the attribute's value has changed.

#### Parameters:

- `e` EventFacade
  An Event Facade object with the following attribute-specific properties added:
  - `prevVal` Any
    The value of the attribute, prior to it being set.
  - `newVal` Any
    The value the attribute is to be set to.
  - `attrName` String
    The name of the attribute being set.
  - `subAttrName` String
    If setting a property within the attribute's value, the name of the sub-attribute property being set.

### `length`

String | Number e.g. "200px" or 200

Inherited from SliderBase: `slider/js/slider-base.js:729`

The length of the rail (exclusive of the end caps if positioned by CSS). This corresponds to the movable range of the thumb.

Default: 150px

#### Fires event `lengthChange`

Fires when the value for the configuration attribute `length` is changed. You can listen for the event using the `on` method if you wish to be notified before the attribute's value has changed, or using the `after` method if you wish to be notified after the attribute's value has changed.

#### Parameters:

- `e` EventFacade
  An Event Facade object with the following attribute-specific properties added:
  - `prevVal` Any
    The value of the attribute, prior to it being set.
  - `newVal` Any
    The value the attribute is to be set to.
  - `attrName` String
    The name of the attribute being set.
  - `subAttrName` String
    If setting a property within the attribute's value, the name of the sub-attribute property being set.

### `locale`

String deprecated

Inherited from Widget: `widget/js/WidgetLocale.js:17`

Deprecated: Use Y.config.lang and Y.Intl externalization support

The default locale for the widget. NOTE: Using get/set on the "strings" attribute will return/set strings for this locale.

Default: "en"

#### Fires event `localeChange`

Fires when the value for the configuration attribute `locale` is changed. You can listen for the event using the `on` method if you wish to be notified before the attribute's value has changed, or using the `after` method if you wish to be notified after the attribute's value has changed.

#### Parameters:

- `e` EventFacade
  An Event Facade object with the following attribute-specific properties added:
  - `prevVal` Any
    The value of the attribute, prior to it being set.
  - `newVal` Any
    The value the attribute is to be set to.
  - `attrName` String
    The name of the attribute being set.
  - `subAttrName` String
    If setting a property within the attribute's value, the name of the sub-attribute property being set.

### `majorStep`

Number

Inherited from SliderValueRange: `slider/js/value-range.js:387`

amount to increment/decrement the Slider value when the page up/down keys are pressed

Default: 10

#### Fires event `majorStepChange`

Fires when the value for the configuration attribute `majorStep` is changed. You can listen for the event using the `on` method if you wish to be notified before the attribute's value has changed, or using the `after` method if you wish to be notified after the attribute's value has changed.

#### Parameters:

- `e` EventFacade
  An Event Facade object with the following attribute-specific properties added:
  - `prevVal` Any
    The value of the attribute, prior to it being set.
  - `newVal` Any
    The value the attribute is to be set to.
  - `attrName` String
    The name of the attribute being set.
  - `subAttrName` String
    If setting a property within the attribute's value, the name of the sub-attribute property being set.

### `max`

Number

Inherited from SliderValueRange: `slider/js/value-range.js:361`

The value associated with the farthest bottom, right position of the rail. Can be less than the configured `min` if you want values to increase from right-to-left or bottom-to-top.

Default: 100

#### Fires event `maxChange`

Fires when the value for the configuration attribute `max` is changed. You can listen for the event using the `on` method if you wish to be notified before the attribute's value has changed, or using the `after` method if you wish to be notified after the attribute's value has changed.

#### Parameters:

- `e` EventFacade
  An Event Facade object with the following attribute-specific properties added:
  - `prevVal` Any
    The value of the attribute, prior to it being set.
  - `newVal` Any
    The value the attribute is to be set to.
  - `attrName` String
    The name of the attribute being set.
  - `subAttrName` String
    If setting a property within the attribute's value, the name of the sub-attribute property being set.

### `min`

Number

Inherited from SliderValueRange: `slider/js/value-range.js:347`

The value associated with the farthest top, left position of the rail. Can be greater than the configured `max` if you want values to increase from right-to-left or bottom-to-top.

Default: 0

#### Fires event `minChange`

Fires when the value for the configuration attribute `min` is changed. You can listen for the event using the `on` method if you wish to be notified before the attribute's value has changed, or using the `after` method if you wish to be notified after the attribute's value has changed.

#### Parameters:

- `e` EventFacade
  An Event Facade object with the following attribute-specific properties added:
  - `prevVal` Any
    The value of the attribute, prior to it being set.
  - `newVal` Any
    The value the attribute is to be set to.
  - `attrName` String
    The name of the attribute being set.
  - `subAttrName` String
    If setting a property within the attribute's value, the name of the sub-attribute property being set.

### `minorStep`

Number

Inherited from SliderValueRange: `slider/js/value-range.js:375`

amount to increment/decrement the Slider value when the arrow up/down/left/right keys are pressed

Default: 1

#### Fires event `minorStepChange`

Fires when the value for the configuration attribute `minorStep` is changed. You can listen for the event using the `on` method if you wish to be notified before the attribute's value has changed, or using the `after` method if you wish to be notified after the attribute's value has changed.

#### Parameters:

- `e` EventFacade
  An Event Facade object with the following attribute-specific properties added:
  - `prevVal` Any
    The value of the attribute, prior to it being set.
  - `newVal` Any
    The value the attribute is to be set to.
  - `attrName` String
    The name of the attribute being set.
  - `subAttrName` String
    If setting a property within the attribute's value, the name of the sub-attribute property being set.

### `render`

Boolean | Node

Inherited from Widget: `widget/js/Widget.js:286`

Whether or not to render the widget automatically after init, and optionally, to which parent node.

#### Fires event `renderChange`

Fires when the value for the configuration attribute `render` is changed. You can listen for the event using the `on` method if you wish to be notified before the attribute's value has changed, or using the `after` method if you wish to be notified after the attribute's value has changed.

#### Parameters:

- `e` EventFacade
  An Event Facade object with the following attribute-specific properties added:
  - `prevVal` Any
    The value of the attribute, prior to it being set.
  - `newVal` Any
    The value the attribute is to be set to.
  - `attrName` String
    The name of the attribute being set.
  - `subAttrName` String
    If setting a property within the attribute's value, the name of the sub-attribute property being set.

### `rendered`

Boolean readonly

Inherited from Widget: `widget/js/Widget.js:161`

Flag indicating whether or not this Widget has been through the render lifecycle phase.

Default: false

#### Fires event `renderedChange`

Fires when the value for the configuration attribute `rendered` is changed. You can listen for the event using the `on` method if you wish to be notified before the attribute's value has changed, or using the `after` method if you wish to be notified after the attribute's value has changed.

#### Parameters:

- `e` EventFacade
  An Event Facade object with the following attribute-specific properties added:
  - `prevVal` Any
    The value of the attribute, prior to it being set.
  - `newVal` Any
    The value the attribute is to be set to.
  - `attrName` String
    The name of the attribute being set.
  - `subAttrName` String
    If setting a property within the attribute's value, the name of the sub-attribute property being set.

### `srcNode`

String | Node

Inherited from Widget: `widget/js/WidgetHTMLParser.js:58`

The DOM node to parse for configuration values, passed to the Widget's HTML_PARSER definition

#### Fires event `srcNodeChange`

Fires when the value for the configuration attribute `srcNode` is changed. You can listen for the event using the `on` method if you wish to be notified before the attribute's value has changed, or using the `after` method if you wish to be notified after the attribute's value has changed.

#### Parameters:

- `e` EventFacade
  An Event Facade object with the following attribute-specific properties added:
  - `prevVal` Any
    The value of the attribute, prior to it being set.
  - `newVal` Any
    The value the attribute is to be set to.
  - `attrName` String
    The name of the attribute being set.
  - `subAttrName` String
    If setting a property within the attribute's value, the name of the sub-attribute property being set.

### `strings`

Object

Inherited from Widget: `widget/js/Widget.js:274`

Collection of strings used to label elements of the Widget's UI.

Default: null

#### Fires event `stringsChange`

Fires when the value for the configuration attribute `strings` is changed. You can listen for the event using the `on` method if you wish to be notified before the attribute's value has changed, or using the `after` method if you wish to be notified after the attribute's value has changed.

#### Parameters:

- `e` EventFacade
  An Event Facade object with the following attribute-specific properties added:
  - `prevVal` Any
    The value of the attribute, prior to it being set.
  - `newVal` Any
    The value the attribute is to be set to.
  - `attrName` String
    The name of the attribute being set.
  - `subAttrName` String
    If setting a property within the attribute's value, the name of the sub-attribute property being set.

### `tabIndex`

Number

Inherited from Widget: `widget/js/Widget.js:202`

Number (between -32767 to 32767) indicating the widget's position in the default tab flow. The value is used to set the "tabIndex" attribute on the widget's bounding box. Negative values allow the widget to receive DOM focus programmatically (by calling the focus method), while being removed from the default tab flow. A value of null removes the "tabIndex" attribute from the widget's bounding box.

Default: null

#### Fires event `tabIndexChange`

Fires when the value for the configuration attribute `tabIndex` is changed. You can listen for the event using the `on` method if you wish to be notified before the attribute's value has changed, or using the `after` method if you wish to be notified after the attribute's value has changed.

#### Parameters:

- `e` EventFacade
  An Event Facade object with the following attribute-specific properties added:
  - `prevVal` Any
    The value of the attribute, prior to it being set.
  - `newVal` Any
    The value the attribute is to be set to.
  - `attrName` String
    The name of the attribute being set.
  - `subAttrName` String
    If setting a property within the attribute's value, the name of the sub-attribute property being set.

### `thumbUrl`

String

Inherited from SliderBase: `slider/js/slider-base.js:742`

Path to the thumb image. This will be used as both the thumb and shadow as a sprite. Defaults at render() to thumb-x.png or thumb-y.png in the skin directory of the current skin.

Default: thumb-x.png or thumb-y.png in the sam skin directory of the current build path for Slider

#### Fires event `thumbUrlChange`

Fires when the value for the configuration attribute `thumbUrl` is changed. You can listen for the event using the `on` method if you wish to be notified before the attribute's value has changed, or using the `after` method if you wish to be notified after the attribute's value has changed.

#### Parameters:

- `e` EventFacade
  An Event Facade object with the following attribute-specific properties added:
  - `prevVal` Any
    The value of the attribute, prior to it being set.
  - `newVal` Any
    The value the attribute is to be set to.
  - `attrName` String
    The name of the attribute being set.
  - `subAttrName` String
    If setting a property within the attribute's value, the name of the sub-attribute property being set.

### `value`

Number

Inherited from SliderValueRange: `slider/js/value-range.js:399`

The value associated with the thumb's current position on the rail. Defaults to the value inferred from the thumb's current position. Specifying value in the constructor will move the thumb to the position that corresponds to the supplied value.

Default: (inferred from current thumb position)

#### Fires event `valueChange`

Fires when the value for the configuration attribute `value` is changed. You can listen for the event using the `on` method if you wish to be notified before the attribute's value has changed, or using the `after` method if you wish to be notified after the attribute's value has changed.

#### Parameters:

- `e` EventFacade
  An Event Facade object with the following attribute-specific properties added:
  - `prevVal` Any
    The value of the attribute, prior to it being set.
  - `newVal` Any
    The value the attribute is to be set to.
  - `attrName` String
    The name of the attribute being set.
  - `subAttrName` String
    If setting a property within the attribute's value, the name of the sub-attribute property being set.

### `visible`

Boolean

Inherited from Widget: `widget/js/Widget.js:242`

Boolean indicating whether or not the Widget is visible.

Default: TRUE

#### Fires event `visibleChange`

Fires when the value for the configuration attribute `visible` is changed. You can listen for the event using the `on` method if you wish to be notified before the attribute's value has changed, or using the `after` method if you wish to be notified after the attribute's value has changed.

#### Parameters:

- `e` EventFacade
  An Event Facade object with the following attribute-specific properties added:
  - `prevVal` Any
    The value of the attribute, prior to it being set.
  - `newVal` Any
    The value the attribute is to be set to.
  - `attrName` String
    The name of the attribute being set.
  - `subAttrName` String
    If setting a property within the attribute's value, the name of the sub-attribute property being set.

### `width`

String | Number

Inherited from Widget: `widget/js/Widget.js:263`

String with units, or number, representing the width of the Widget. If a number is provided, the default unit, defined by the Widgets DEF_UNIT, property is used.

Default: EMPTY_STR

#### Fires event `widthChange`

Fires when the value for the configuration attribute `width` is changed. You can listen for the event using the `on` method if you wish to be notified before the attribute's value has changed, or using the `after` method if you wish to be notified after the attribute's value has changed.

#### Parameters:

- `e` EventFacade
  An Event Facade object with the following attribute-specific properties added:
  - `prevVal` Any
    The value of the attribute, prior to it being set.
  - `newVal` Any
    The value the attribute is to be set to.
  - `attrName` String
    The name of the attribute being set.
  - `subAttrName` String
    If setting a property within the attribute's value, the name of the sub-attribute property being set.

## Events

### `destroy`

Inherited from BaseObservable: `base/js/BaseObservable.js:151`

Lifecycle event for the destroy phase, fired prior to destruction. Invoking the preventDefault method on the event object provided to subscribers will prevent destruction from proceeding.

Subscribers to the "after" moment of this event, will be notified after destruction is complete (and as a result cannot prevent destruction).

#### Event Payload:

- `e` EventFacade

  Event object

### `init`

Inherited from BaseObservable: `base/js/BaseObservable.js:62`

Lifecycle event for the init phase, fired prior to initialization. Invoking the preventDefault() method on the event object provided to subscribers will prevent initialization from occuring.

Subscribers to the "after" momemt of this event, will be notified after initialization of the object is complete (and therefore cannot prevent initialization).

#### Event Payload:

- `e` EventFacade

  Event object, with a cfg property which refers to the configuration object passed to the constructor.

### `railMouseDown`

Inherited from ClickableRail: `slider/js/clickable-rail.js:33`

Broadcasts when the rail has received a mousedown event and triggers the thumb positioning. Use `e.preventDefault()` or `set("clickableRail", false)` to prevent the thumb positioning.

### `render`

Inherited from Widget: `widget/js/Widget.js:543`

Lifecycle event for the render phase, fired prior to rendering the UI for the widget (prior to invoking the widget's renderer method).

Subscribers to the "on" moment of this event, will be notified before the widget is rendered.

Subscribers to the "after" moment of this event, will be notified after rendering is complete.

#### Event Payload:

- `e` EventFacade

  The Event Facade

### `slideEnd`

Inherited from SliderBase: `slider/js/slider-base.js:494`

Signals the end of a thumb drag operation. Payload includes the thumb's drag:end event.

#### Event Payload:

- `event` Event

  The event object for the slideEnd with the following extra properties:

  ddEvent (deprecated)
    `drag:end` event from the thumb
  originEvent
    `drag:end` event from the thumb

### `slideStart`

Inherited from SliderBase: `slider/js/slider-base.js:447`

Signals the beginning of a thumb drag operation. Payload includes the thumb's drag:start event.

#### Event Payload:

- `event` Event

  The event object for the slideStart with the following extra properties:

  ddEvent (deprecated)
    `drag:start` event from the thumb
  originEvent
    `drag:start` event from the thumb

### `thumbMove`

Inherited from SliderBase: `slider/js/slider-base.js:68`

Signals that the thumb has moved. Payload includes the thumb's pixel offset from the top/left edge of the rail, and if triggered by dragging the thumb, the `drag:drag` event.

#### Event Payload:

- `event` Event

  The event object for the thumbMove with the following extra properties:

  offset
    Pixel offset from top/left of the slider to the new thumb position
  ddEvent (deprecated)
    `drag:drag` event from the thumb
  originEvent
    `drag:drag` event from the thumb

### `widget:contentUpdate`

Inherited from Widget: `widget/js/Widget.js:397`

Notification event, which widget implementations can fire, when they change the content of the widget. This event has no default behavior and cannot be prevented, so the "on" or "after" moments are effectively equivalent (with on listeners being invoked before after listeners).

#### Event Payload:

- `e` EventFacade

  The Event Facade