ScrollView Class
ScrollView provides a scrollable widget, supporting flick gestures, across both touch and mouse based devices.
Constructor
Item Index
Methods
- addAttr
- addAttrs
- addTarget
- after
- ancestor
- attrAdded
- before
- bindUI
- blur
- bubble
- destroy
- detach
- detachAll
- disable
- enable
- fire
- focus
- get
- getAttrs
- getClassName
- getEvent
- getSkinName
- getString deprecated
- getStrings deprecated
- getTargets
- hide
- init
- initializer
- isRoot
- modifyAttr
- next
- on
- once
- onceAfter
- parseType
- previous
- publish
- removeAttr
- removeTarget
- render
- reset
- scrollTo
- set
- setAttrs
- show
- subscribe deprecated
- syncUI
- toString
- unsubscribe deprecated
- unsubscribeAll deprecated
Properties
- BOUNCE_RANGE static deprecated
- BOUNDING_TEMPLATE
- CLASS_NAMES static
- CONTENT_TEMPLATE
- DEF_PARENT_NODE
- DEF_UNIT
- EASING static deprecated
- FRAME_STEP static deprecated
- lastScrolledAmt
- name deprecated
- SNAP_DURATION static deprecated
- SNAP_EASING static deprecated
- UI_EVENTS
- UI_SRC static
Attributes
Methods
addAttr
-
name
-
config
-
lazy
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
StringThe name of the attribute.
-
config
ObjectAn 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:
A reference to the host object.
addAttrs
-
cfgs
-
values
-
lazy
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
ObjectAn object with attribute name/configuration pairs.
-
values
ObjectAn 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
BooleanWhether 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:
A reference to the host object.
addTarget
-
o
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
EventTargetthe target to add
after
-
type
-
fn
-
[context]
-
[arg*]
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:
Returns:
A subscription handle capable of detaching the subscription
ancestor
-
depth
Returns the Widget instance at the specified depth.
Parameters:
-
depth
NumberNumber representing the depth of the ancestor.
Returns:
Widget instance.
attrAdded
-
name
Checks if the given attribute has been added to the host
Parameters:
-
name
StringThe name of the attribute to check.
Returns:
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
()
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
()
bindUI implementation
Hooks up events for the widget
blur
()
chainable
Causes the Widget to lose focus by setting the "focused" attribute to "false"
bubble
-
evt
Propagate an event. Requires the event-custom-complex module.
Parameters:
-
evt
CustomEventthe custom event to propagate
Returns:
the aggregated return value from Event.Custom.fire
destroy
-
destroyAllNodes
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
BooleanIf true, all nodes contained within the Widget are removed and destroyed. Defaults to false due to potentially high run-time cost.
Returns:
A reference to this object
detach
-
type
-
fn
-
context
Detach one or more listeners the from the specified event
Parameters:
-
type
String | ObjectEither 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
FunctionThe subscribed function to unsubscribe, if not supplied, all subscribers will be removed.
-
context
ObjectThe 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:
the host
detachAll
-
type
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
StringThe type, or name of the event
disable
()
chainable
Set the Widget's "disabled" attribute to "true".
enable
()
chainable
Set the Widget's "disabled" attribute to "false".
fire
-
type
-
arguments
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.
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.
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.
Parameters:
-
type
String | ObjectThe 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:
True if the whole lifecycle of the event went through, false if at any point the event propagation was halted.
focus
()
chainable
Causes the Widget to receive the focus by setting the "focused" attribute to "true".
get
-
name
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
StringThe 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:
The value of the attribute
getAttrs
-
attrs
Gets multiple attribute values.
Parameters:
Returns:
An object with attribute name/value pairs.
getClassName
-
args
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* multiple0..n strings which should be concatenated, using the default separator defined by ClassNameManager, to create the class name
getEvent
-
type
-
prefixed
Returns the custom event of the provided type has been created, a falsy value otherwise
Parameters:
Returns:
the custom event or null
getSkinName
-
[skinPrefix]
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 optionalThe 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:
The name of the skin, or null, if a matching skin class is not found.
getString
-
key
Helper method to get a specific string value
Parameters:
-
key
String
Returns:
The string
getStrings
-
key
Helper method to get the complete set of strings for the widget
Parameters:
-
key
String
Returns:
The strings
getTargets
()
Returns an array of bubble targets for this object.
Returns:
EventTarget[]
hide
()
chainable
Hides the Widget by setting the "visible" attribute to "false".
init
-
cfg
Init lifecycle method, invoked during construction. Sets up attributes and invokes initializers for the class hierarchy.
Parameters:
-
cfg
ObjectObject with configuration property name/value pairs
Returns:
A reference to this object
initializer
-
Configuration
Designated initializer
Parameters:
-
Configuration
Objectobject for the plugin
isRoot
()
Boolean
Determines if the Widget is the root Widget in the object hierarchy.
Returns:
Boolean indicating if Widget is the root Widget in the object hierarchy.
modifyAttr
-
name
-
config
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.
Note: New attributes cannot be added using this interface. New attributes must be added using addAttr, or an appropriate manner for a class which utilises Attributes (e.g. the ATTRS property in Base).
next
-
circular
Returns the Widget's next sibling.
Parameters:
-
circular
BooleanBoolean indicating if the parent's first child should be returned if the child has no next sibling.
Returns:
Widget instance.
on
-
type
-
fn
-
[context]
-
[arg*]
Subscribe a callback function to a custom event fired by this object or from an object that bubbles its events to this object.
this.on("change", this._onChange, this);
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.
this.on({
"attrChange" : this._onAttrChange,
"change" : this._onChange
});
You can also pass an array of event names as the first argument to subscribe to all listed events with the same callback.
this.on([ "change", "attrChange" ], this._onChange);
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:
Returns:
A subscription handle capable of detaching that subscription
once
-
type
-
fn
-
[context]
-
[arg*]
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:
Returns:
A subscription handle capable of detaching the subscription
onceAfter
-
type
-
fn
-
[context]
-
[arg*]
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:
Returns:
A subscription handle capable of detaching that subscription
parseType
-
type
-
[pre]
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:
Returns:
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
Returns the Widget's previous sibling.
Parameters:
-
circular
BooleanBoolean indicating if the parent's last child should be returned if the child has no previous sibling.
Returns:
Widget instance.
publish
-
type
-
opts
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
Stringthe type, or name of the event
-
opts
Objectoptional config params. Valid properties are:
-
[broadcast=false]
Boolean optionalwhether or not the YUI instance and YUI global are notified when the event is fired.
-
[bubbles=true]
Boolean optionalWhether or not this event bubbles. Events can only bubble if
emitFacade
is true. -
[context=this]
Object optionalthe default execution context for the listeners.
-
[defaultFn]
Function optionalthe default function to execute when this event fires if preventDefault was not called.
-
[emitFacade=false]
Boolean optionalwhether or not this event emits a facade.
-
[prefix]
String optionalthe prefix for this targets events, e.g., 'menu' in 'menu:click'.
-
[fireOnce=false]
Boolean optionalif an event is configured to fire once, new subscribers after the fire will be notified immediately.
-
[async=false]
Boolean optionalfireOnce event listeners will fire synchronously if the event has already fired unless
async
istrue
. -
[preventable=true]
Boolean optionalwhether or not
preventDefault()
has an effect. -
[preventedFn]
Function optionala function that is executed when
preventDefault()
is called. -
[queuable=false]
Boolean optionalwhether or not this event can be queued during bubbling.
-
[silent]
Boolean optionalif silent is true, debug messages are not provided for this event.
-
[stoppedFn]
Function optionala function that is executed when stopPropagation is called.
-
[monitored]
Boolean optionalspecifies whether or not this event should send notifications about when the event has been attached, detached, or published.
-
[type]
String optionalthe event type (valid option if not provided as the first parameter to publish).
-
Returns:
the custom event
removeAttr
-
name
Removes an attribute from the host object
Parameters:
-
name
StringThe name of the attribute to be removed.
render
-
parentNode
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 | StringOptional. 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.
reset
-
name
Resets the attribute (or all attributes) to its initial value, as long as the attribute is not readOnly, or writeOnce.
Parameters:
-
name
StringOptional. The name of the attribute to reset. If omitted, all attributes are reset.
Returns:
A reference to the host object.
scrollTo
-
x
-
y
-
[duration]
-
[easing]
-
[node]
Scroll the element to a given xy coordinate
Parameters:
-
x
NumberThe x-position to scroll to. (null for no movement)
-
y
NumberThe y-position to scroll to. (null for no movement)
-
[duration]
Number optionalms of the scroll animation. (default is 0)
-
[easing]
String optionalAn easing equation if duration is set. (default is
easing
attribute) -
[node]
String optionalThe node to transform. Setting this can be useful in dual-axis paginated instances. (default is the instance's contentBox)
set
-
name
-
value
-
[opts]
Sets the value of an attribute.
Parameters:
-
name
StringThe 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
AnyThe value to set the attribute to.
-
[opts]
Object optionalOptional data providing the circumstances for the change.
Returns:
A reference to the host object.
setAttrs
-
attrs
-
[opts]
Sets multiple attribute values.
Parameters:
Returns:
A reference to the host object.
show
()
chainable
Shows the Widget by setting the "visible" attribute to "true".
subscribe
()
deprecated
subscribe to an event
syncUI
()
syncUI implementation.
Update the scroll position, based on the current value of scrollX/scrollY.
toString
()
String
Generic toString implementation for all widgets.
Returns:
The default string value for the widget [ displays the NAME of the instance, and the unique id ]
unsubscribe
()
deprecated
detach a listener
unsubscribeAll
-
type
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
StringThe type, or name of the event
Properties
CONTENT_TEMPLATE
String
Property defining the markup template for content box. If your Widget doesn't need the dual boundingBox/contentBox structure, set CONTENT_TEMPLATE to null, and contentBox and boundingBox will both point to the same Node.
DEF_PARENT_NODE
String | Node
Default node to render the bounding box to. If not set, will default to the current document body.
lastScrolledAmt
Number
public
Contains the distance (postive or negative) in pixels by which the scrollview was last scrolled. This is useful when setting up click listeners on the scrollview content, which on mouse based devices are always fired, even after a drag/flick.
Touch based devices don't currently fire a click event, if the finger has been moved (beyond a threshold) so this check isn't required, if working in a purely touch based environment
Default: 0
SNAP_DURATION
Number
deprecated
static
The default duration to use when animating the bounce snap back.
Default: false
SNAP_EASING
String
deprecated
static
The default easing to use when animating the bounce snap back.
Default: false
Attributes
axis
String
Specifies ability to scroll on x, y, or x and y axis/axes.
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
EventFacadeAn Event Facade object with the following attribute-specific properties added:
bounce
Number
Drag coefficient for intertial scrolling at the upper and lower boundaries of the scrollview. Set to 0 to disable "rubber-banding".
Default: 0.1
Fires event bounceChange
Fires when the value for the configuration attribute bounce
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
EventFacadeAn Event Facade object with the following attribute-specific properties added:
bounceRange
Number
The default bounce distance in pixels
Default: 150
Fires event bounceRangeChange
Fires when the value for the configuration attribute bounceRange
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
EventFacadeAn Event Facade object with the following attribute-specific properties added:
boundingBox
String | Node
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
EventFacadeAn Event Facade object with the following attribute-specific properties added:
contentBox
String | Node
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
EventFacadeAn Event Facade object with the following attribute-specific properties added:
deceleration
Drag coefficent for inertial scrolling. The closer to 1 this value is, the less friction during scrolling.
Default: 0.93
Fires event decelerationChange
Fires when the value for the configuration attribute deceleration
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
EventFacadeAn Event Facade object with the following attribute-specific properties added:
destroyed
Boolean
readonly
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
EventFacadeAn Event Facade object with the following attribute-specific properties added:
disabled
Boolean
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
EventFacadeAn Event Facade object with the following attribute-specific properties added:
drag
Boolean
Enable/Disable dragging the ScrollView content (note: flick support is enabled/disabled separately)
Default: true
Fires event dragChange
Fires when the value for the configuration attribute drag
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
EventFacadeAn Event Facade object with the following attribute-specific properties added:
easing
String
The default easing used when animating the flick
Default: 'cubic-bezier(0, 0.1, 0, 1.0)'
Fires event easingChange
Fires when the value for the configuration attribute easing
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
EventFacadeAn Event Facade object with the following attribute-specific properties added:
flick
Object
The minimum distance and/or velocity which define a flick. Can be set to false, to disable flick support (note: drag support is enabled/disabled separately)
Default: Object with properties minDistance = 10, minVelocity = 0.3.
Fires event flickChange
Fires when the value for the configuration attribute flick
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
EventFacadeAn Event Facade object with the following attribute-specific properties added:
focused
Boolean
readonly
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
EventFacadeAn Event Facade object with the following attribute-specific properties added:
frameDuration
Number
The interval (ms) used when animating the flick for JS-timer animations
Default: 15
Fires event frameDurationChange
Fires when the value for the configuration attribute frameDuration
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
EventFacadeAn Event Facade object with the following attribute-specific properties added:
height
String | Number
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
EventFacadeAn Event Facade object with the following attribute-specific properties added:
id
String
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
EventFacadeAn Event Facade object with the following attribute-specific properties added:
initialized
Boolean
readonly
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
EventFacadeAn Event Facade object with the following attribute-specific properties added:
render
Boolean | Node
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
EventFacadeAn Event Facade object with the following attribute-specific properties added:
rendered
Boolean
readonly
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
EventFacadeAn Event Facade object with the following attribute-specific properties added:
scrollX
Number
The current scroll position in the x-axis
Default: 0
Fires event scrollXChange
Fires when the value for the configuration attribute scrollX
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
EventFacadeAn Event Facade object with the following attribute-specific properties added:
scrollY
Number
The current scroll position in the y-axis
Default: 0
Fires event scrollYChange
Fires when the value for the configuration attribute scrollY
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
EventFacadeAn Event Facade object with the following attribute-specific properties added:
snapDuration
Number
The default duration to use when animating the bounce snap back.
Default: 400
Fires event snapDurationChange
Fires when the value for the configuration attribute snapDuration
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
EventFacadeAn Event Facade object with the following attribute-specific properties added:
snapEasing
String
The default easing to use when animating the bounce snap back.
Default: 'ease-out'
Fires event snapEasingChange
Fires when the value for the configuration attribute snapEasing
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
EventFacadeAn Event Facade object with the following attribute-specific properties added:
srcNode
String | Node
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
EventFacadeAn Event Facade object with the following attribute-specific properties added:
strings
Object
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
EventFacadeAn Event Facade object with the following attribute-specific properties added:
tabIndex
Number
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
EventFacadeAn Event Facade object with the following attribute-specific properties added:
visible
Boolean
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
EventFacadeAn Event Facade object with the following attribute-specific properties added:
width
String | Number
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
EventFacadeAn Event Facade object with the following attribute-specific properties added:
Events
destroy
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
EventFacadeEvent object
init
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
EventFacadeEvent object, with a cfg property which refers to the configuration object passed to the constructor.
render
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
EventFacadeThe Event Facade
scrollEnd
Notification event fired at the end of a scroll transition
Event Payload:
-
e
EventFacadeThe default event facade.
widget:contentUpdate
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
EventFacadeThe Event Facade