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IHierarchicalCollectionView

Package | mx.collections
Interface | public interface IHierarchicalCollectionView extends ICollectionView, flash.events.IEventDispatcher
Implementors | HierarchicalCollectionView

Language Version : | ActionScript 3.0

Product Version : | Flex 3

Runtime Versions : | Flash Player 9, AIR 1.1

The IHierarchicalCollectionView interface defines an interface for hierarchical or grouped data. Typically, you use this data with the AdvancedDataGrid control.

See also

mx.controls.AdvancedDataGrid

Public Properties
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| Property | Defined By
--- | --- | ---
|  | filterFunction : Function A function that the view will use to eliminate items that do not match the function's criteria. | ICollectionView
|  | hasRoot : Boolean [read-only] A flag that, if true, indicates that the current data provider has a root node; for example, a single top-level node in a hierarchical structure. | IHierarchicalCollectionView
|  | length : int [read-only] The number of items in this view. | ICollectionView
|  | openNodes : Object An Array of Objects containing the data provider element for all the open branch nodes of the data. | IHierarchicalCollectionView
|  | showRoot : Boolean A Boolean flag that specifies whether to display the data provider's root node. | IHierarchicalCollectionView
|  | sort : ISort The ISort that will be applied to the ICollectionView. | ICollectionView
|  | source : IHierarchicalData The source data of the IHierarchicalCollectionView. | IHierarchicalCollectionView

Public Methods
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| Method | Defined By
--- | --- | ---
|  | addChild(parent:Object, newChild:Object):Boolean Adds a child node to a node of the data. | IHierarchicalCollectionView
|  | addChildAt(parent:Object, newChild:Object, index:int):Boolean Adds a child node to a node of the data at a specific index in the data. | IHierarchicalCollectionView
|  | closeNode(node:Object):void Closes a node to hide its children. | IHierarchicalCollectionView
|  | contains(item:Object):Boolean Returns whether the view contains the specified object. | ICollectionView
|  | createCursor():IViewCursor Creates a new IViewCursor that works with this view. | ICollectionView
|  | disableAutoUpdate():void Prevents changes to the collection itself and items within the collection from being dispatched by the view. | ICollectionView
|  | enableAutoUpdate():void Enables auto-updating. | ICollectionView
|  | getChildren(node:Object):ICollectionView Returns a collection of children, if they exist. | IHierarchicalCollectionView
|  | getNodeDepth(node:Object):int Returns the depth of the node in the collection. | IHierarchicalCollectionView
|  | getParentItem(node:Object):* Returns the parent of a node. | IHierarchicalCollectionView
|  | itemUpdated(item:Object, property:Object = null, oldValue:Object = null, newValue:Object = null):void Notifies the view that an item has been updated. | ICollectionView
|  | openNode(node:Object):void Opens a node to display its children. | IHierarchicalCollectionView
|  | refresh():Boolean Applies the sort and filter to the view. | ICollectionView
|  | removeChild(parent:Object, child:Object):Boolean Removes the child node from the parent node. | IHierarchicalCollectionView
|  | removeChildAt(parent:Object, index:int):Boolean Removes the child node from a node at the specified index. | IHierarchicalCollectionView

Property Detail

hasRoot | property

`hasRoot:Boolean` [read-only]

Language Version : | ActionScript 3.0

Product Version : | Flex 3

Runtime Versions : | Flash Player 9, AIR 1.1

A flag that, if `true`, indicates that the current data provider has a root node; for example, a single top-level node in a hierarchical structure. XML and Object are examples of data types that have a root node, while Lists and Arrays do not.

Implementation
`public function get hasRoot():Boolean`

openNodes | property |

`openNodes:Object`

Language Version : | ActionScript 3.0

Product Version : | Flex 3

Runtime Versions : | Flash Player 9, AIR 1.1

An Array of Objects containing the data provider element for all the open branch nodes of the data.

Implementation
`public function get openNodes():Object`
`public function set openNodes(value:Object):void`

showRoot | property |

`showRoot:Boolean`

Language Version : | ActionScript 3.0

Product Version : | Flex 3

Runtime Versions : | Flash Player 9, AIR 1.1

A Boolean flag that specifies whether to display the data provider's root node. If the source data has a root node, and this property is set to `false`, the collection will not include the root item. Only the descendants of the root item will be included in the collection.

This property has no effect on a source with no root node, such as List and Array objects.

The default value is `true`.

Implementation
`public function get showRoot():Boolean`
`public function set showRoot(value:Boolean):void`

See also

hasRoot

source | property |

`source:IHierarchicalData`

Language Version : | ActionScript 3.0

Product Version : | Flex 3

Runtime Versions : | Flash Player 9, AIR 1.1

The source data of the IHierarchicalCollectionView.

Implementation
`public function get source():IHierarchicalData`
`public function set source(value:IHierarchicalData):void`
Method Detail

addChild | () | method

`public function addChild(parent:Object, newChild:Object):Boolean`

Language Version : | ActionScript 3.0

Product Version : | Flex 3

Runtime Versions : | Flash Player 9, AIR 1.1

Adds a child node to a node of the data.

Parameters

| `parent:Object` — The Object that defines the parent node.
| `newChild:Object` — The Object that defines the new node.

Returns

| `Boolean` — `true` if the node is added successfully.

addChildAt | () | method |

`public function addChildAt(parent:Object, newChild:Object, index:int):Boolean`

Language Version : | ActionScript 3.0

Product Version : | Flex 3

Runtime Versions : | Flash Player 9, AIR 1.1

Adds a child node to a node of the data at a specific index in the data.

Parameters

| `parent:Object` — The Object that defines the parent node.
| `newChild:Object` — The Object that defines the new node.
| `index:int` — The zero-based index of where to insert the child node.

Returns

| `Boolean` — `true` if the node is added successfully.

closeNode | () | method |

`public function closeNode(node:Object):void`

Language Version : | ActionScript 3.0

Product Version : | Flex 3

Runtime Versions : | Flash Player 9, AIR 1.1

Closes a node to hide its children.

Parameters

| `node:Object` — The Object that defines the node.

getChildren | () | method |

`public function getChildren(node:Object):ICollectionView`

Language Version : | ActionScript 3.0

Product Version : | Flex 3

Runtime Versions : | Flash Player 9, AIR 1.1

Returns a collection of children, if they exist.

Parameters

| `node:Object` — The Object that defines the node. If `null`, return a collection of top level nodes.

Returns

| `ICollectionView` — ICollectionView instance containing the child nodes.

getNodeDepth | () | method |

`public function getNodeDepth(node:Object):int`

Language Version : | ActionScript 3.0

Product Version : | Flex 3

Runtime Versions : | Flash Player 9, AIR 1.1

Returns the depth of the node in the collection.

Parameters

| `node:Object` — The Object that defines the node.

Returns

| `int` — The depth of the node.

getParentItem | () | method |

`public function getParentItem(node:Object):*`

Language Version : | ActionScript 3.0

Product Version : | Flex 3

Runtime Versions : | Flash Player 9, AIR 1.1

Returns the parent of a node. The parent of a top-level node is `null`.

Parameters

| `node:Object` — The Object that defines the node.

Returns

| `*` — The parent node containing the node as child, `null` for a top-level node, and `undefined` if the parent cannot be determined.

openNode | () | method |

`public function openNode(node:Object):void`

Language Version : | ActionScript 3.0

Product Version : | Flex 3

Runtime Versions : | Flash Player 9, AIR 1.1

Opens a node to display its children.

Parameters

| `node:Object` — The Object that defines the node.

removeChild | () | method |

`public function removeChild(parent:Object, child:Object):Boolean`

Language Version : | ActionScript 3.0

Product Version : | Flex 3

Runtime Versions : | Flash Player 9, AIR 1.1

Removes the child node from the parent node.

Parameters

| `parent:Object` — The Object that defines the parent node, and `null` for top-level nodes.
| `child:Object` — The Object that defines the child node to be removed.

Returns

| `Boolean` — `true` if the node is removed successfully.

removeChildAt | () | method |

`public function removeChildAt(parent:Object, index:int):Boolean`

Language Version : | ActionScript 3.0

Product Version : | Flex 3

Runtime Versions : | Flash Player 9, AIR 1.1

Removes the child node from a node at the specified index.

Parameters

| `parent:Object` — The node object that currently parents the child node. Set `parent` to `null` for top-level nodes.
| `index:int` — The zero-based index of the child node to remove relative to the parent.

Returns

| `Boolean` — `true` if successful, and `false` if not.

Wed Nov 15 2017, 09:50 AM +01:00