Menu Class
Menu widget.
Constructor
Menu
-
[config]
Parameters:
-
[config]
Object optionalConfig options.
-
[sourceNode]
HTMLElement | Node | String optionalNode instance, HTML element, or selector string for a node (usually a
<ul>
or<ol>
) whose structure should be parsed and used to generate this menu's contents. This node will be removed from the DOM after being parsed.
-
Item Index
Methods
- _addAttrs
- _addLazyAttr
- _addOutOfOrder
- _adoptNode
- _afterAdd
- _afterClear
- _afterClose
- _afterContainerChange
- _afterDisable
- _afterDocMouseDown
- _afterEnable
- _afterHide
- _afterOpen
- _afterOrientationChange
- _afterRemove
- _afterShow
- _afterVisibleChange
- _aggregateAttrs
- _attachMenuEvents
- _attrCfgHash
- _baseDestroy
- _baseInit
- _cloneDefaultValue
- _composeNodeClass
- _defAttrChangeFn
- _defDestroyFn
- _defDisableFn
- _defEnableFn
- _defHideFn
- _defInitFn
- _defItemClickFn
- _defShowFn
- _defSpecificItemClickFn
- _destroyContainer
- _destroyHierarchy
- _detachMenuEvents
- _filterAdHocAttrs
- _fireAttrChange
- _fireTreeEvent
- _getAncestorTestFn
- _getAnchorRegion
- _getAttr
- _getAttrCfg
- _getAttrCfgs
- _getAttrInitVal
- _getAttrs
- _getClasses
- _getContainer
- _getDefaultNodeIndex
- _getFullType
- _getInstanceAttrCfgs
- _getStateVal
- _getType
- _hasPotentialSubscribers
- _hideMenu
- _initAttrHost
- _initAttribute
- _initAttrs
- _initBase
- _initHierarchy
- _initHierarchyData
- _inRegion
- _isLazyAttr
- _monitor
- _normAttrVals
- _onItemClick
- _onItemMouseEnter
- _onItemMouseLeave
- _onMenuMouseEnter
- _onMenuMouseLeave
- _parseType
- _positionMenu
- _preInitEventCfg
- _protectAttrs deprecated
- _publish
- _removeNodeFromParent
- _set
- _setAttr
- _setAttrs
- _setAttrVal
- _setStateVal
- addAttr
- addAttrs
- addTarget
- after
- appendNode
- attachEvents
- attrAdded
- before
- bubble
- clear
- closeSubMenus
- create
- createNode
- destroy
- destroyNode
- detach
- detachAll
- detachEvents
- disableItem
- emptyNode
- enableItem
- findNode
- fire
- get
- getAttrs
- getEvent
- getHTMLNode
- getNodeById
- getTargets
- hide
- hideItem
- init
- insertNode
- modifyAttr
- on
- once
- onceAfter
- parseHTML
- parseType
- prependNode
- publish
- remove
- removeAttr
- removeNode
- removeTarget
- render
- renderChildren
- renderNode
- reposition
- reset
- set
- setAttrs
- show
- showItem
- size
- subscribe deprecated
- toggleVisible
- toJSON
- toString
- traverseNode
- unsubscribe deprecated
- unsubscribeAll deprecated
Properties
Attributes
Methods
_addAttrs
-
cfgs
-
values
-
lazy
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
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.
_addLazyAttr
-
name
-
[lazyCfg]
Finishes initializing an attribute which has been lazily added.
_addOutOfOrder
-
name
-
cfg
Utility method used by get/set to add attributes encountered out of order when calling addAttrs().
For example, if:
this.addAttrs({
foo: {
setter: function() {
// make sure this bar is available when foo is added
this.get("bar");
}
},
bar: {
value: ...
}
});
_adoptNode
-
node
-
[options]
Moves the specified node and all its children from another tree to this tree.
_afterClear
()
protected
Handles clear
events for this menu.
_afterContainerChange
()
protected
Handles containerChange
events. Detaches event handlers from the old
container (if any) and attaches them to the new container.
Right now the container
attr is initOnly so this event should only ever
fire the first time the container is created, but in the future (once Y.App
can handle it) we may allow runtime container changes.
_afterDocMouseDown
-
e
Handles mousedown
events on the document.
Parameters:
_afterOrientationChange
-
e
Handles orientationChange
events for this menu.
Parameters:
_afterVisibleChange
-
e
Handles visibleChange
events for this menu.
Parameters:
_aggregateAttrs
-
allAttrs
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
ArrayAn array of ATTRS definitions across classes in the hierarchy (subclass first, Base last)
Returns:
The aggregate set of ATTRS definitions for the instance
_attachMenuEvents
()
protected
Attaches menu events.
_attrCfgHash
()
private
Utility method to define the attribute hash used to filter/whitelist property mixes for this class for iteration performance reasons.
_baseDestroy
()
private
Internal destroy implementation for BaseCore
_baseInit
()
private
Internal initialization implementation for BaseCore
_cloneDefaultValue
-
cfg
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
_composeNodeClass
()
protected
Composes a custom late-bound tree node class (if necessary) based on the
classes specified in this Tree's nodeClass
and nodeExtensions
properties.
The composed class is stored in this Tree's _nodeClass
property. If
composition wasn't necessary, then _nodeClass
will just be a reference to
nodeClass
.
_defAttrChangeFn
-
e
-
eventFastPath
Default function for attribute change events.
Parameters:
-
e
EventFacadeThe event object for attribute change events.
-
eventFastPath
BooleanWhether or not we're using this as a fast path in the case of no listeners or not
_defInitFn
-
e
Default init event handler
Parameters:
-
e
EventFacadeEvent object, with a cfg property which refers to the configuration object passed to the constructor.
_defItemClickFn
-
e
Default handler for the generic itemClick
event.
Parameters:
_defSpecificItemClickFn
-
e
Default handler for item-specific itemClick#<id>
events.
Parameters:
_destroyContainer
()
protected
Removes the container
from the DOM and purges all its event listeners.
_destroyHierarchy
()
private
Destroys the class hierarchy for this instance by invoking the destructor method on the prototype of each class in the hierarchy.
_detachMenuEvents
()
protected
Detaches menu events.
_filterAdHocAttrs
-
allAttrs
-
userVals
Parameters:
-
allAttrs
ObjectThe 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
ObjectThe config object passed in by the user, from which adhoc attrs are to be filtered.
Returns:
The set of adhoc attributes passed in, in the form of an object with attribute name/configuration pairs.
_fireAttrChange
-
attrName
-
subAttrName
-
currVal
-
newVal
-
opts
-
[cfg]
Utility method to help setup the event payload and fire the attribute change event.
Parameters:
-
attrName
StringThe name of the attribute
-
subAttrName
StringThe full path of the property being changed, if this is a sub-attribute value being change. Otherwise null.
-
currVal
AnyThe current value of the attribute
-
newVal
AnyThe new value of the attribute
-
opts
ObjectAny additional event data to mix into the attribute change event's event facade.
-
[cfg]
Object optionalThe attribute config stored in State, if already available.
_fireTreeEvent
-
name
-
facade
-
[options]
Utility method for lazily publishing and firing events.
_getAncestorTestFn
()
Function
protected
Returns an efficient test function that can be passed to Y.Node#ancestor()
to test whether a node is this menu's container.
This is broken out to make overriding easier in subclasses.
Returns:
Test function.
_getAnchorRegion
-
anchor
-
nodeRegion
-
parentRegion
Given an anchor point and the regions currently occupied by a child node (the node being anchored) and a parent node (the node being anchored to), returns a region object representing the coordinates the anchored node will occupy when anchored to the given point on the parent.
An anchor point is a string like "tl-bl", which means "anchor the top left point of nodeRegion to the bottom left point of parentRegion".
Any combination of top/bottom/left/right anchor points may be used as long as they follow this format. Here are a few examples:
'bl-br'
: Anchor the bottom left of nodeRegion to the bottom right of parentRegion.'br-bl'
: Anchor the bottom right of nodeRegion to the bottom left of parentRegion.'tl-tr'
: Anchor the top left of nodeRegion to the top right of parentRegion.'tr-tl'
: Anchor the top right of nodeRegion to the top left of parentRegion.
Parameters:
Returns:
Region that will be occupied by the anchored node.
_getAttr
-
name
Provides the common implementation for the public get method, allowing Attribute hosts to over-ride either method.
See get for argument details.
Parameters:
-
name
StringThe name of the attribute.
Returns:
The value of the attribute.
_getAttrCfg
-
name
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
StringOptional. The attribute name. If not provided, the method will return the configuration for all attributes.
Returns:
The configuration properties for the given attribute, or all attributes.
_getAttrCfgs
()
Object
protected
Returns an aggregated set of attribute configurations, by traversing the class hierarchy.
Returns:
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
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:
Returns:
The initial value of the attribute.
_getAttrs
-
attrs
Implementation behind the public getAttrs method, to get multiple attribute values.
Parameters:
-
attrs
Array | booleanOptional. 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:
An object with attribute name/value pairs.
_getClasses
()
Function[]
protected
Returns the class hierarchy for this object, with BaseCore being the last class in the array.
Returns:
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.
_getContainer
-
value
Getter for the container
attribute.
Parameters:
-
value
Node | NullCurrent attribute value.
Returns:
Container node.
_getDefaultNodeIndex
-
parent
-
node
-
[options]
Returns the default insertion index that should be used when node is inserted as a child of parent without an explicit index.
The primary purpose of this method is to serve as a hook point for extensions and plugins that need to customize insertion order.
Parameters:
Returns:
Index at which node should be inserted into parent's
children
array.
_getFullType
-
type
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
StringThe short type to prefix
Returns:
The prefixed type, if a prefix is set, otherwise the type passed in
_getInstanceAttrCfgs
-
allCfgs
A helper method used to isolate the attrs config for this instance to pass to addAttrs
,
from the static cached ATTRS for the class.
Parameters:
-
allCfgs
ObjectThe 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:
The set of attributes to be added for this instance, suitable
for passing through to addAttrs
.
_getStateVal
-
name
-
[cfg]
Gets the stored value for the attribute, from either the internal state object, or the state proxy if it exits
Parameters:
Returns:
The stored value of the attribute
_getType
()
private
If the instance has a prefix attribute and the event type is not prefixed, the instance prefix is applied to the supplied type.
_hasPotentialSubscribers
-
fullType
Parameters:
-
fullType
StringThe fully prefixed type name
Returns:
Whether the event has potential subscribers or not
_hideMenu
-
item
-
[htmlNode]
Hides the specified menu container by moving its htmlNode offscreen.
_initAttrHost
-
attrs
-
values
-
lazy
Constructor logic for attributes. Initializes the host state, and sets up the inital attributes passed to the constructor.
Parameters:
-
attrs
ObjectThe 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
ObjectThe 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
BooleanWhether or not to add attributes lazily (passed through to addAttrs).
_initAttribute
()
private
Initializes AttributeCore
_initAttrs
-
attrs
-
values
-
lazy
Utility method to set up initial attributes defined during construction, either through the constructor.ATTRS property, or explicitly passed in.
Parameters:
-
attrs
ObjectThe 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
ObjectThe 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
BooleanWhether or not to add attributes lazily (passed through to addAttrs).
_initBase
-
config
Internal construction logic for BaseCore.
Parameters:
-
config
ObjectThe constructor configuration object
_initHierarchy
-
userVals
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
ObjectObject with configuration property name/value pairs
_initHierarchyData
()
private
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.
_inRegion
-
inner
-
outer
Returns true
if the given inner region is contained entirely within the
given outer region. If it's not a perfect fit, returns a numerical score
indicating how much of the inner region fits within the outer region.
A higher score indicates a better fit.
_isLazyAttr
-
name
Checks whether or not the attribute is one which has been added lazily and still requires initialization.
Parameters:
-
name
StringThe name of the attribute
Returns:
true if it's a lazily added attribute, false otherwise.
_monitor
-
what
-
eventType
-
o
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 -> click_attach, click_detach, 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 | CustomEventThe prefixed name of the event being monitored, or the CustomEvent object.
-
o
ObjectInformation about the event interaction, such as fire() args, subscription category, publish config
_normAttrVals
-
valueHash
Utility method to normalize attribute values. The base implementation simply merges the hash to protect the original.
Parameters:
-
valueHash
ObjectAn object with attribute name/value pairs
Returns:
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.
_onItemMouseEnter
-
e
Handles delegated mouseenter
events on menu items.
Parameters:
_onItemMouseLeave
-
e
Handles delegated mouseleave
events on menu items.
Parameters:
_parseType
()
private
Returns an array with the detach key (if provided), and the prefixed event name from _getType Y.on('detachcategory| menu:click', fn)
_positionMenu
-
item
-
[htmlNode]
Intelligently positions the htmlNode of the given submenu item relative to its parent so that as much as possible of the submenu will be visible within the viewport.
_preInitEventCfg
-
config
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
ObjectThe user configuration object
_protectAttrs
-
attrs
Utility method to protect an attribute configuration hash, by merging the entire object and the individual attr config objects.
Parameters:
-
attrs
ObjectA hash of attribute to configuration object pairs.
Returns:
A protected version of the attrs argument.
_publish
-
fullType
-
etOpts
-
ceOpts
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:
Returns:
The published event. If called without etOpts
or ceOpts
, this will
be the default CustomEvent
instance, and can be configured independently.
_removeNodeFromParent
-
node
Removes the specified node from its parent node if it has one.
Parameters:
-
node
Tree.NodeNode to remove.
_set
-
name
-
val
-
[opts]
Allows setting of readOnly/writeOnce attributes. See set for argument details.
Parameters:
Returns:
A reference to the host object.
_setAttr
-
name
-
value
-
[opts]
-
force
Provides the common implementation for the public set and protected _set methods.
See set for argument details.
Parameters:
Returns:
A reference to the host object.
_setAttrs
-
attrs
-
[opts]
Implementation behind the public setAttrs method, to set multiple attribute values.
Parameters:
Returns:
A reference to the host object.
_setAttrVal
-
attrName
-
subAttrName
-
prevVal
-
newVal
-
[opts]
-
[attrCfg]
Updates the stored value of the attribute in the privately held State object, if validation and setter passes.
Parameters:
-
attrName
StringThe attribute name.
-
subAttrName
StringThe sub-attribute name, if setting a sub-attribute property ("x.y.z").
-
prevVal
AnyThe currently stored value of the attribute.
-
newVal
AnyThe value which is going to be stored.
-
[opts]
Object optionalOptional data providing the circumstances for the change.
-
[attrCfg]
Object optionalOptional 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:
true if the new attribute value was stored, false if not.
_setStateVal
-
name
-
value
Sets the stored value for the attribute, in either the internal state object, or the state proxy if it exits
Parameters:
-
name
StringThe name of the attribute
-
value
AnyThe value of the attribute
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
appendNode
-
parent
-
node
-
[options]
Appends a node or array of nodes as the last child of the specified parent node.
If a node being appended is from another tree, it and all its children will be removed from that tree and moved to this one.
Parameters:
-
parent
Tree.NodeParent node.
-
node
Object | Object[] | Tree.Node | Tree.Node[]Child node, node config object, array of child nodes, or array of node config objects to append to the given parent. Node config objects will automatically be converted into node instances.
-
[options]
Object optionalOptions.
-
[silent=false]
Boolean optionalIf
true
, theadd
event will be suppressed.
-
Returns:
Node or array of nodes that were appended.
attachEvents
-
[events]
Attaches delegated event handlers to this view's container element. This
method is called internally to subscribe to events configured in the
events
attribute when the view is initialized.
You may override this method to customize the event attaching logic.
Parameters:
-
[events]
Object optionalHash of events to attach. See the docs for the
events
attribute for details on the format. If not specified, this view'sevents
property will be used.
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
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
clear
-
[rootNode]
-
[options]
Clears this tree by destroying the root node and all its children. If a
rootNode
argument is provided, that node will become the root node of this
tree; otherwise, a new root node will be created.
Parameters:
-
[rootNode]
Object | Tree.Node optionalIf specified, this node will be used as the new root node.
-
[options]
Object optionalOptions.
-
[silent=false]
Boolean optionalIf
true
, theclear
event will be suppressed. -
[src]
String optionalSource of the change, to be passed along to the event facade of the resulting event. This can be used to distinguish between changes triggered by a user and changes triggered programmatically, for example.
-
closeSubMenus
()
chainable
Closes all open submenus of this menu.
create
-
[container]
Creates and returns a container node for this view.
By default, the container is created from the HTML template specified in the
containerTemplate
property, and is not added to the DOM automatically.
You may override this method to customize how the container node is created
(such as by rendering it from a custom template format). Your method must
return a Y.Node
instance.
Parameters:
-
[container]
HTMLElement | Node | String optionalSelector string,
Y.Node
instance, or DOM element to use at the container node.
Returns:
Node instance of the created container node.
createNode
-
[config]
Creates and returns a new Tree.Node
instance associated with (but not
yet appended to) this tree.
Parameters:
Returns:
New node, or null
if a node could not be created
from the given config.
destroy
-
[options]
Destroys this View, detaching any DOM events and optionally also destroying its container node.
By default, the container node will not be destroyed. Pass an options
object with a truthy remove
property to destroy the container as well.
destroyNode
-
node
-
[options]
Removes and destroys a node and all its child nodes. Once destroyed, a node is eligible for garbage collection and cannot be reused or re-added to the tree.
Parameters:
-
node
Tree.NodeNode to destroy.
-
[options]
Object optionalOptions.
-
[silent=false]
Boolean optionalIf
true
,remove
events will be suppressed. -
[src]
String optionalSource of the change, to be passed along to the event facade of the resulting events. This can be used to distinguish between changes triggered by a user and changes triggered programmatically, for example.
-
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
detachEvents
()
chainable
Detaches DOM events that have previously been attached to the container by
attachEvents()
.
disableItem
-
item
-
[options]
Disables the specified menu item.
emptyNode
-
node
-
[options]
Removes all children from the specified node. The removed children will
still be reusable unless the destroy
option is truthy.
Parameters:
-
node
Tree.NodeNode to empty.
-
[options]
Object optionalOptions.
-
[destroy=false]
Boolean optionalIf
true
, the children will also be destroyed, which makes them available for garbage collection and means they can't be reused. -
[silent=false]
Boolean optionalIf
true
,remove
events will be suppressed. -
[src]
String optionalSource of the change, to be passed along to the event facade of the resulting events. This can be used to distinguish between changes triggered by a user and changes triggered programmatically, for example.
-
Returns:
Array of removed child nodes.
enableItem
-
item
-
[options]
Enables the specified menu item.
findNode
-
node
-
[options]
-
callback
-
[thisObj]
Performs a depth-first traversal of node, passing it and each of its descendants to the specified callback, and returning the first node for which the callback returns a truthy value.
Traversal will stop as soon as a truthy value is returned from the callback.
See traverseNode()
for more details on how depth-first traversal works.
Parameters:
-
node
Tree.NodeNode to traverse.
-
[options]
Object optionalOptions.
-
[depth]
Number optionalDepth limit. If specified, descendants will only be traversed to this depth before backtracking and moving on.
-
-
callback
FunctionCallback function to call with the traversed node and each of its descendants. If this function returns a truthy value, traversal will be stopped and the current node will be returned.
-
node
Tree.NodeNode being traversed.
-
-
[thisObj]
Object optionalthis
object to use when executing callback.
Returns:
Returns the first node for which the callback
returns a truthy value, or null
if the callback never returns a truthy
value.
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.
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:
-
attrs
Array | booleanOptional. 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:
An object with attribute name/value pairs.
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
getHTMLNode
-
item
Returns the HTML node (as a Y.Node
instance) associated with the specified
menu item, if any.
Parameters:
-
item
Menu.ItemMenu item.
Returns:
Y.Node
instance associated with the given tree node, or
undefined
if one was not found.
getNodeById
-
id
Returns the tree node with the specified id, or undefined
if the node
doesn't exist in this tree.
Parameters:
-
id
StringNode id.
Returns:
Node, or undefined
if not found.
getTargets
()
Returns an array of bubble targets for this object.
Returns:
EventTarget[]
hide
()
chainable
Hides this menu.
hideItem
-
item
-
[options]
Hides the specified menu item.
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
insertNode
-
parent
-
node
-
[options]
Inserts a node or array of nodes at the specified index under the given parent node, or appends them to the parent if no index is specified.
If a node being inserted is from another tree, it and all its children will be removed from that tree and moved to this one.
Parameters:
-
parent
Tree.NodeParent node.
-
node
Object | Object[] | Tree.Node | Tree.Node[]Child node, node config object, array of child nodes, or array of node config objects to insert under the given parent. Node config objects will automatically be converted into node instances.
-
[options]
Object optionalOptions.
-
[index]
Number optionalIndex at which to insert the child node. If not specified, the node will be appended as the last child of the parent.
-
[silent=false]
Boolean optionalIf
true
, theadd
event will be suppressed. -
[src='insert']
String optionalSource of the change, to be passed along to the event facade of the resulting event. This can be used to distinguish between changes triggered by a user and changes triggered programmatically, for example.
-
Returns:
Node or array of nodes that were inserted.
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.
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.
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:
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
parseHTML
-
sourceNode
Parses the specified HTML sourceNode as a menu structure and returns an array of menu item objects that can be used to generate a menu with that structure.
By default, sourceNode is expected to contain one <li>
element per
menu item, and submenus are expected to be represented by <ul>
or <ol>
elements.
The selector queries used to parse the menu structure are contained in the
sourceSelectors
property, and may be customized. Class names specified in
the classNames
property are used to determine whether a menu item should
be disabled, hidden, or treated as a heading or separator.
Parameters:
-
sourceNode
HTMLElement | Node | StringNode instance, HTML element, or selector string for the node (usually a
<ul> or
- ` element) to
parse.
Returns:
Array of menu item objects.
parseType
-
type
-
[pre=this._yuievt.config.prefix]
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.
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
prependNode
-
parent
-
node
-
[options]
Prepends a node or array of nodes at the beginning of the specified parent node.
If a node being prepended is from another tree, it and all its children will be removed from that tree and moved to this one.
Parameters:
-
parent
Tree.NodeParent node.
-
node
Object | Object[] | Tree.Node | Tree.Node[]Child node, node config object, array of child nodes, or array of node config objects to prepend to the given parent. Node config objects will automatically be converted into node instances.
-
[options]
Object optionalOptions.
-
[silent=false]
Boolean optionalIf
true
, theadd
event will be suppressed.
-
Returns:
Node or array of nodes that were prepended.
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': 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:
the custom event
remove
()
chainable
Removes this view's container element from the DOM (if it's in the DOM), but doesn't destroy it or any event listeners attached to it.
removeAttr
-
name
Removes an attribute from the host object
Parameters:
-
name
StringThe name of the attribute to be removed.
removeNode
-
node
-
[options]
Removes the specified node from its parent node. The removed node will still
be reusable unless the destroy
option is truthy.
Parameters:
-
node
Tree.NodeNode to remove.
-
[options]
Object optionalOptions.
-
[destroy=false]
Boolean optionalIf
true
, the node and all its children will also be destroyed, which makes them available for garbage collection and means they can't be reused. -
[silent=false]
Boolean optionalIf
true
, theremove
event will be suppressed. -
[src]
String optionalSource of the change, to be passed along to the event facade of the resulting event. This can be used to distinguish between changes triggered by a user and changes triggered programmatically, for example.
-
Returns:
Node that was removed.
render
()
chainable
Renders this menu into its container.
If the container hasn't already been added to the current document, it will
be appended to the <body>
element.
renderChildren
-
menuItem
-
[options]
Renders the children of the specified menu item.
If a container is specified, it will be assumed to be an existing rendered menu item, and the children will be rendered (or re-rendered) inside it.
Parameters:
Returns:
Y.Node
instance containing the rendered children.
renderNode
-
menuItem
-
[options]
Renders the specified menu item and its children (if any).
If a container is specified, the rendered node will be appended to it.
Parameters:
Returns:
Y.Node
instance of the rendered menu item.
reposition
-
anchorPoint
Repositions this menu so that it is anchored to a specified node, region, or set of pixel coordinates.
The menu will be displayed at the most advantageous position relative to the anchor point to ensure that as much of the menu as possible is visible within the viewport.
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.
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
-
[options]
Shows this menu.
The menu will be rendered if it hasn't been rendered already.
showItem
-
item
-
[options]
Shows the specified menu item.
size
()
Number
Returns the total number of nodes in this tree, at all levels.
Use rootNode.children.length
to get only the number of top-level nodes.
Returns:
Total number of nodes in this tree.
subscribe
()
deprecated
subscribe to an event
toggleVisible
-
[options]
Toggles the visibility of this menu, showing it if it's currently hidden or hiding it if it's currently visible.
toJSON
()
Object
Serializes this tree to an object suitable for use in JSON.
Returns:
Serialized tree object.
toString
()
String
Default toString implementation. Provides the constructor NAME and the instance guid, if set.
Returns:
String representation for this object
traverseNode
-
node
-
[options]
-
callback
-
[thisObj]
Performs a depth-first traversal of node, passing it and each of its descendants to the specified callback.
If the callback function returns Tree.STOP_TRAVERSAL
, traversal will be
stopped immediately. Otherwise, it will continue until the deepest
descendant of node has been traversed, or until each branch has been
traversed to the optional maximum depth limit.
Since traversal is depth-first, that means nodes are traversed like this:
1
/ | \
2 8 9
/ \ \
3 7 10
/ | \ / \
4 5 6 11 12
Parameters:
-
node
Tree.NodeNode to traverse.
-
[options]
Object optionalOptions.
-
[depth]
Number optionalDepth limit. If specified, descendants will only be traversed to this depth before backtracking and moving on.
-
-
callback
FunctionCallback function to call with the traversed node and each of its descendants.
-
node
Tree.NodeNode being traversed.
-
-
[thisObj]
Object optionalthis
object to use when executing callback.
Returns:
Returns Tree.STOP_TRAVERSAL
if traversal was stopped;
otherwise returns undefined
.
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
_allowAdHocAttrs
Boolean
protected
This tells Y.Base
that it should create ad-hoc attributes for config
properties passed to View's constructor. This makes it possible to
instantiate a view and set a bunch of attributes without having to subclass
Y.View
and declare all those attributes first.
Default: true
_nodeClass
Tree.Node
protected
Composed node class based on nodeClass
that mixes in any extensions
specified in nodeExtensions
. If there are no extensions, this will just be
a reference to nodeClass
.
children
Tree.Node[]
Reference to the children
array of this Tree's rootNode
.
This is a convenience property to allow you to type tree.children
instead
of tree.rootNode.children
.
events
Object
Hash of CSS selectors mapped to events to delegate to elements matching those selectors.
CSS selectors are relative to the container
element. Events are attached
to the container, and delegation is used so that subscribers are only
notified of events that occur on elements inside the container that match
the specified selectors. This allows the container's contents to be re-
rendered as needed without losing event subscriptions.
Event handlers can be specified either as functions or as strings that map to function names on this view instance or its prototype.
The this
object in event handlers will refer to this view instance. If
you'd prefer this
to be something else, use Y.bind()
to bind a custom
this
object.
Default: {}
Example:
var view = new Y.View({
events: {
// Call this.toggle()
whenever the element with the id
// "toggle-button" is clicked.
'#toggle-button': {click: 'toggle'},
// Call this.hoverOn()
when the mouse moves over any element
// with the "hoverable" class, and this.hoverOff()
when the
// mouse moves out of any element with the "hoverable" class.
'.hoverable': {
mouseover: 'hoverOn',
mouseout : 'hoverOff'
}
}
});
nodeClass
String | Tree.Node
The Tree.Node
class or subclass that should be used for nodes created by
this tree.
You may specify an actual class reference or a string that resolves to a class reference at runtime.
Default: Y.Tree.Node
nodeExtensions
Array
Optional array containing one or more extension classes that should be mixed
into the nodeClass
when this Tree is instantiated. The resulting composed
node class will be unique to this Tree instance and will not affect any
other instances, nor will it modify the defined nodeClass
itself.
This provides a late-binding extension mechanism for nodes that doesn't
require them to extend Y.Base
, which would incur a significant performance
hit.
Default: []
sourceSelectors
Object
Selectors to use when parsing a menu structure from a DOM structure via
parseHTML()
.
template
Mixed
Template for this view's contents.
This is a convenience property that has no default behavior of its own.
It's only provided as a convention to allow you to store whatever you
consider to be a template, whether that's an HTML string, a Y.Node
instance, a Mustache template, or anything else your little heart
desires.
How this template gets used is entirely up to you and your custom
render()
method.
Default: ''
Attributes
alignments
String[]
Preferred alignment positions at which this menu should be displayed
relative to the anchor point when one is provided to the show()
,
toggle()
, or reposition()
methods.
The most optimal alignment position will be chosen automatically based on which one allows the most of this menu to be visible within the browser's viewport. If multiple positions are equally visible, then the optimal position will be chosen based on its order in this array.
An alignment position is a string like "tl-bl", which means "align the top left of this menu to the bottom left of its anchor point".
Any combination of top/bottom/left/right alignment positions may be used as long as they follow this format. Here are a few examples:
'bl-br'
: Align the bottom left of this menu with the bottom right of the anchor point.'br-bl'
: Align the bottom right of this menu with the bottom left of the anchor point.'tl-tr'
: Align the top left of this menu with the top right of the anchor point.'tr-tl'
: Align the top right of this menu to the top left of this anchor point.
Default: ['tl-bl', 'tr-br', 'bl-tl', 'br-tr']
Fires event alignmentsChange
Fires when the value for the configuration attribute alignments
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:
container
HTMLElement | Node | String
Container node into which this view's content will be rendered.
The container node serves as the host for all DOM events attached by the view. Delegation is used to handle events on children of the container, allowing the container's contents to be re-rendered at any time without losing event subscriptions.
The default container is a <div>
Node, but you can override this in
a subclass, or by passing in a custom container
config value at
instantiation time. If you override the default container in a subclass
using ATTRS
, you must use the valueFn
property. The view's constructor
will ignore any assignments using value
.
When container
is overridden by a subclass or passed as a config
option at instantiation time, you can provide it as a selector string, a
DOM element, a Y.Node
instance, or (if you are subclassing and modifying
the attribute), a valueFn
function that returns a Y.Node
instance.
The value will be converted into a Y.Node
instance if it isn't one
already.
The container is not added to the page automatically. This allows you to have full control over how and when your view is actually rendered to the page.
Default: Y.Node.create(this.containerTemplate)
Fires event containerChange
Fires when the value for the configuration attribute container
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:
hideOnClick
Boolean
If true
, this menu will be hidden when the user clicks on a menu item
that doesn't contain a submenu.
Default: true
Fires event hideOnClickChange
Fires when the value for the configuration attribute hideOnClick
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:
hideOnMouseLeave
Boolean
If true
, this menu will be hidden when the user moves the mouse
outside the menu.
Default: false
Fires event hideOnMouseLeaveChange
Fires when the value for the configuration attribute hideOnMouseLeave
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:
hideOnOutsideClick
Boolean
If true
, this menu will be hidden when the user clicks somewhere
outside the menu.
Default: true
Fires event hideOnOutsideClickChange
Fires when the value for the configuration attribute hideOnOutsideClick
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:
orientation
String
Orientation of this menu. May be either 'vertical'
or 'horizontal'
.
Default: 'vertical'
Fires event orientationChange
Fires when the value for the configuration attribute orientation
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:
subMenuAlignments
String[]
Just like alignments
, but for submenus of this menu. See the
alignments
attribute for details on how alignment positions work.
Default: ['tl-tr', 'bl-br', 'tr-tl', 'br-bl']
Fires event subMenuAlignmentsChange
Fires when the value for the configuration attribute subMenuAlignments
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
Whether or not this menu is visible. Changing this attribute's value will also change the visibility of this menu.
Default: false
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:
Events
add
Fired when a node is added to this Tree. The src
property will indicate
how the node was added ("append", "insert", "prepend", etc.).
clear
Fired when this Tree is cleared.
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
disable
Fired when a menu item is disabled.
Event Payload:
-
item
Menu.ItemMenu item that was disabled.
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.
itemClick
Fired when any clickable menu item is clicked.
You can subscribe to clicks on a specific menu item by subscribing to "itemClick#id", where "id" is the item id of the item you want to subscribe to.
Event Payload:
-
item
Menu.ItemMenu item that was clicked.
-
originEvent
EventFacadeOriginal click event.
remove
Fired when a node is removed from this Tree.