| Package | mx.collections |
| Class | public class HierarchicalData |
| Inheritance | HierarchicalData  EventDispatcher Object |
| Implements | IHierarchicalData |
| Subclasses | GroupingCollection, GroupingCollection2 |
| Language Version: | ActionScript 3.0 |
| Product Version: | Flex 3 |
| Runtime Versions: | Flash Player 9, AIR 1.1 |
dataProvider property an instance of the HierarchicalData class.
This implementation handles E4X, XML, and Object nodes in similar but different
ways. See each method description for details on how the method
accesses values in nodes of various types.
Related API Elements
Public Properties
Hide Inherited Public Properties
Show Inherited Public Properties| Property | Defined By | ||
|---|---|---|---|
| childrenField : String
Indicates the field name to be used to detect children objects in
a data item. | HierarchicalData | ||
 | constructor : Object
A reference to the class object or constructor function for a given object instance. | Object | |
| source : Object
The source collection. | HierarchicalData | ||
Public Methods
| Method | Defined By | ||
|---|---|---|---|
HierarchicalData(value:Object = null)
Constructor. | HierarchicalData | ||
| addEventListener(type:String, listener:Function, useCapture:Boolean = false, priority:int = 0, useWeakReference:Boolean = false):void
Registers an event listener object with an EventDispatcher object so that the listener
receives notification of an event. | EventDispatcher | |
Returns true if the node can contain children. | HierarchicalData | ||
|
Dispatches an event into the event flow. | EventDispatcher | |
Returns an Object representing the node's children. | HierarchicalData | ||
Returns data from a node. | HierarchicalData | ||
Returns the root data item. | HierarchicalData | ||
Returns true if the node has children. | HierarchicalData | ||
|
Checks whether the EventDispatcher object has any listeners registered for a specific type
of event. | EventDispatcher | |
|
Indicates whether an object has a specified property defined. | Object | |
|
Indicates whether an instance of the Object class is in the prototype chain of the object specified
as the parameter. | Object | |
|
Indicates whether the specified property exists and is enumerable. | Object | |
|
Removes a listener from the EventDispatcher object. | EventDispatcher | |
|
Sets the availability of a dynamic property for loop operations. | Object | |
|
Returns the string representation of this object, formatted according to locale-specific conventions. | Object | |
|
Returns the string representation of the specified object. | Object | |
|
Returns the primitive value of the specified object. | Object | |
|
Checks whether an event listener is registered with this EventDispatcher object or any of
its ancestors for the specified event type. | EventDispatcher | |
Property Detail
childrenField | property |
childrenField:String| Language Version: | ActionScript 3.0 |
| Product Version: | Flex 3 |
| Runtime Versions: | Flash Player 9, AIR 1.1 |
Indicates the field name to be used to detect children objects in
a data item.
By default, all subnodes are considered as children for
XML data, and the children property is used for the Object data type.
This is helpful in adapting to a data format that uses custom data fields
to represent children.
Implementation
public function get childrenField():String public function set childrenField(value:String):voidsource | property |
source:Object| Language Version: | ActionScript 3.0 |
| Product Version: | Flex 3 |
| Runtime Versions: | Flash Player 9, AIR 1.1 |
The source collection. The collection should implement the IList interface to facilitate operation like the addition and removal of items.
Implementation
public function get source():Object public function set source(value:Object):voidRelated API Elements
Constructor Detail
HierarchicalData | () | Constructor |
Method Detail
canHaveChildren | () | method |
public function canHaveChildren(node:Object):Boolean| Language Version: | ActionScript 3.0 |
| Product Version: | Flex 3 |
| Runtime Versions: | Flash Player 9, AIR 1.1 |
Returns true if the node can contain children.
Nodes do not have to contain children for the method
to return true.
This method is useful in determining whether other
nodes can be appended as children to the specified node.
Parameters
node:Object — The Object that defines the node.
|
Boolean — true if the node can contain children.
|
getChildren | () | method |
public function getChildren(node:Object):Object| Language Version: | ActionScript 3.0 |
| Product Version: | Flex 3 |
| Runtime Versions: | Flash Player 9, AIR 1.1 |
Returns an Object representing the node's children.
Parameters
node:Object — The Object that defines the node.
If null, return a collection of top-level nodes.
|
Object — An Object containing the children nodes.
|
getData | () | method |
getRoot | () | method |
hasChildren | () | method |
Thu Dec 6 2018, 01:12 PM -08:00