Pacchetto | mx.collections |
Classe | public class HierarchicalCollectionView |
Ereditarietà | HierarchicalCollectionView ![]() ![]() |
Implementa | IHierarchicalCollectionView, IXMLNotifiable |
Versione linguaggio: | ActionScript 3.0 |
Versione prodotto: | Flex 3 |
Versioni runtime: | Flash Player 9, AIR 1.1 |

<mx.HierarchicalCollectionView>
inherits all the tag attributes of its superclass,
and defines the following tag attributes:
<mx:HierarchicalCollectionView Properties showRoot="true|false" source="No default" />
Proprietà | Definito da | ||
---|---|---|---|
![]() | constructor : Object
Un riferimento all'oggetto classe o alla funzione di costruzione per una determinata istanza di oggetto. | Object | |
hasRoot : Boolean [sola lettura]
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. | HierarchicalCollectionView | ||
length : int [sola lettura]
The length of the currently parsed collection. | HierarchicalCollectionView | ||
openNodes : Object
An Array of Objects containing the data provider element
for all the open branch nodes of the data. | HierarchicalCollectionView | ||
showRoot : Boolean
A Boolean flag that specifies whether to display the data provider's root node. | HierarchicalCollectionView | ||
source : IHierarchicalData
The source data of the IHierarchicalCollectionView. | HierarchicalCollectionView |
Metodo | Definito da | ||
---|---|---|---|
Constructor. | HierarchicalCollectionView | ||
Adds a child node to a node of the data. | HierarchicalCollectionView | ||
Add a child node to a node at the specified index. | HierarchicalCollectionView | ||
![]() | addEventListener(type:String, listener:Function, useCapture:Boolean = false, priority:int = 0, useWeakReference:Boolean = false):void
Registra un oggetto listener di eventi con un oggetto EventDispatcher, in modo che il listener riceva la notifica di un evento. | EventDispatcher | |
Closes a node to hide its children. | HierarchicalCollectionView | ||
Checks the collection for the data item using standard equality test. | HierarchicalCollectionView | ||
Returns a new instance of a view iterator over the items in this view. | HierarchicalCollectionView | ||
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Invia un evento nel flusso di eventi. | EventDispatcher | |
Returns a collection of children, if they exist. | HierarchicalCollectionView | ||
Returns the depth of the node in the collection. | HierarchicalCollectionView | ||
Returns the parent of a node. | HierarchicalCollectionView | ||
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Verifica se per l'oggetto EventDispatcher sono presenti listener registrati per un tipo specifico di evento. | EventDispatcher | |
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Indica se per un oggetto è definita una proprietà specifica. | Object | |
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Indica se un'istanza della classe Object si trova nella catena di prototipi dell'oggetto specificato come parametro. | Object | |
Opens a node to display its children. | HierarchicalCollectionView | ||
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Indica se la proprietà specificata esiste ed è enumerabile. | Object | |
Applies the sort and filter to the view. | HierarchicalCollectionView | ||
Removes the child node from the parent node. | HierarchicalCollectionView | ||
Removes the child node from a node at the specified index. | HierarchicalCollectionView | ||
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Rimuove un listener dall'oggetto EventDispatcher. | EventDispatcher | |
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Imposta la disponibilità di una proprietà dinamica per le operazioni cicliche. | Object | |
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Restituisce la rappresentazione in formato stringa di questo oggetto, formattato in base alle convenzioni specifiche per le versioni localizzate. | Object | |
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Restituisce la rappresentazione in formato stringa dell'oggetto specificato. | Object | |
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Restituisce il valore di base dell'oggetto specificato. | Object | |
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Verifica se un listener di eventi è registrato con questo oggetto EventDispatcher o qualsiasi suo antenato per il tipo di evento specificato. | EventDispatcher |
hasRoot | proprietà |
hasRoot:Boolean
[sola lettura] Versione linguaggio: | ActionScript 3.0 |
Versione prodotto: | Flex 3 |
Versioni runtime: | 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.
Implementazione
public function get hasRoot():Boolean
length | proprietà |
openNodes | proprietà |
openNodes:Object
Versione linguaggio: | ActionScript 3.0 |
Versione prodotto: | Flex 3 |
Versioni runtime: | Flash Player 9, AIR 1.1 |
An Array of Objects containing the data provider element for all the open branch nodes of the data.
Implementazione
public function get openNodes():Object
public function set openNodes(value:Object):void
showRoot | proprietà |
showRoot:Boolean
Versione linguaggio: | ActionScript 3.0 |
Versione prodotto: | Flex 3 |
Versioni runtime: | 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.
Il valore predefinito è true.
Questa proprietà può essere utilizzata come origine per l’associazione di dati. Quando questa proprietà viene modificata, invia l’evento propertyChange
.
Implementazione
public function get showRoot():Boolean
public function set showRoot(value:Boolean):void
source | proprietà |
source:IHierarchicalData
Versione linguaggio: | ActionScript 3.0 |
Versione prodotto: | Flex 3 |
Versioni runtime: | Flash Player 9, AIR 1.1 |
The source data of the IHierarchicalCollectionView.
Implementazione
public function get source():IHierarchicalData
public function set source(value:IHierarchicalData):void
HierarchicalCollectionView | () | Funzione di costruzione |
public function HierarchicalCollectionView(hierarchicalData:IHierarchicalData = null, argOpenNodes:Object = null)
Versione linguaggio: | ActionScript 3.0 |
Versione prodotto: | Flex 3 |
Versioni runtime: | Flash Player 9, AIR 1.1 |
Constructor.
ParametrihierarchicalData:IHierarchicalData (default = null ) — The data structure containing the hierarchical data.
| |
argOpenNodes:Object (default = null ) — The Object that defines a node to appear as open.
|
addChild | () | metodo |
public function addChild(parent:Object, newChild:Object):Boolean
Versione linguaggio: | ActionScript 3.0 |
Versione prodotto: | Flex 3 |
Versioni runtime: | Flash Player 9, AIR 1.1 |
Adds a child node to a node of the data.
Parametri
parent:Object — The Object that defines the parent node.
| |
newChild:Object — The Object that defines the new node.
|
Boolean — true if the node is added successfully.
|
addChildAt | () | metodo |
public function addChildAt(parent:Object, newChild:Object, index:int):Boolean
Versione linguaggio: | ActionScript 3.0 |
Versione prodotto: | Flex 3 |
Versioni runtime: | Flash Player 9, AIR 1.1 |
Add a child node to a node at the specified index. This implementation does the following:
- If the
parent
is null or undefined, inserts thechild
at the specifiedindex
in the collection specified bysource
. - If the
parent
has achildren
field or property, the method adds thechild
to it at theindex
location. In this case, thesource
is not required. - If the
parent
does not have achildren
field or property, the method adds thechildren
to theparent
. The method then adds thechild
to the parent at theindex
location. In this case, thesource
is not required. - If the
index
value is greater than the collection length or number of children in the parent, adds the object as the last child.
Parametri
parent:Object — The Object that defines the parent node.
| |
newChild:Object — The Object that defines the child node.
| |
index:int — The 0-based index of where to insert the child node.
|
Boolean — true if the child is added successfully.
|
closeNode | () | metodo |
contains | () | metodo |
public function contains(item:Object):Boolean
Versione linguaggio: | ActionScript 3.0 |
Versione prodotto: | Flex 3 |
Versioni runtime: | Flash Player 9, AIR 1.1 |
Checks the collection for the data item using standard equality test.
Parametri
item:Object — The Object that defines the node to look for.
|
Boolean — true if the data item is in the collection,
and false if not.
|
createCursor | () | metodo |
public function createCursor():IViewCursor
Versione linguaggio: | ActionScript 3.0 |
Versione prodotto: | Flex 3 |
Versioni runtime: | Flash Player 9, AIR 1.1 |
Returns a new instance of a view iterator over the items in this view.
RestituisceIViewCursor — IViewCursor instance.
|
Elementi API correlati
getChildren | () | metodo |
public function getChildren(node:Object):ICollectionView
Versione linguaggio: | ActionScript 3.0 |
Versione prodotto: | Flex 3 |
Versioni runtime: | Flash Player 9, AIR 1.1 |
Returns a collection of children, if they exist.
Parametri
node:Object — The Object that defines the node.
If null , return a collection of top level nodes.
|
ICollectionView — ICollectionView instance containing the child nodes.
|
getNodeDepth | () | metodo |
getParentItem | () | metodo |
public function getParentItem(node:Object):*
Versione linguaggio: | ActionScript 3.0 |
Versione prodotto: | Flex 3 |
Versioni runtime: | Flash Player 9, AIR 1.1 |
Returns the parent of a node.
The parent of a top-level node is null
.
Parametri
node:Object — The Object that defines the node.
|
* — The parent node containing the node,
null for a top-level node,
and undefined if the parent cannot be determined.
|
openNode | () | metodo |
refresh | () | metodo |
public function refresh():Boolean
Versione linguaggio: | ActionScript 3.0 |
Versione prodotto: | Flex 3 |
Versioni runtime: | Flash Player 9, AIR 1.1 |
Applies the sort and filter to the view.
The ICollectionView does not detect changes to a sort or
filter automatically, so you must call the refresh()
method to update the view after setting the sort
or filterFunction
property.
If your ICollectionView implementation also implements
the IMXMLObject interface, you should to call the
refresh()
method from your initialized()
method.
Returns true
if the refresh was successful
and false
if the sort is not yet complete
(e.g., items are still pending).
A client of the view should wait for a CollectionEvent event
with the CollectionEventKind.REFRESH
kind
property to ensure that the refresh()
operation is
complete.
Boolean — true if the refresh() was complete,
false if the refresh() is incomplete.
|
removeChild | () | metodo |
public function removeChild(parent:Object, child:Object):Boolean
Versione linguaggio: | ActionScript 3.0 |
Versione prodotto: | Flex 3 |
Versioni runtime: | Flash Player 9, AIR 1.1 |
Removes the child node from the parent node.
Parametri
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.
|
Boolean — true if the node is removed successfully.
|
removeChildAt | () | metodo |
public function removeChildAt(parent:Object, index:int):Boolean
Versione linguaggio: | ActionScript 3.0 |
Versione prodotto: | Flex 3 |
Versioni runtime: | Flash Player 9, AIR 1.1 |
Removes the child node from a node at the specified index.
Parametri
parent:Object — The Object that defines the parent node.
| |
index:int — The 0-based index of the child node to remove relative to the parent.
|
Boolean — true if the child is removed successfully.
|
Tue Jun 12 2018, 02:44 PM Z