IHistoryManagerClient - Guida di riferimento alle API Adobe ActionScript® 3 (AS3 Flex)

Pacchetto	mx.managers
Interfaccia	public interface IHistoryManagerClient
Implementatori	Accordion, PanelManager, ViewStack

Versione linguaggio:

ActionScript 3.0

Versione prodotto:

Flex 3

Versioni runtime:

Flash Player 9, AIR 1.1

Interface that must be implemented by objects registered with the History Manager. The methods in this interface are called by the HistoryManager when saving and loading the history state of the application.

This interface is implemented by the Flex navigator containers TabNavigator, Accordion, and ViewStack. It must be implemented by any other component that is registered with the HistoryManager.

Elementi API correlati

mx.managers.HistoryManager

Metodi pubblici

	Metodo		Definito da
		loadState(state:Object):void Loads the state of this object.	IHistoryManagerClient
		saveState():Object Saves the state of this object.	IHistoryManagerClient
		toString():String Converts this object to a unique string.	IHistoryManagerClient

Descrizione dei metodi

loadState

()

metodo

public function loadState(state:Object):void

Versione linguaggio:

ActionScript 3.0

Versione prodotto:

Flex 3

Versioni runtime:

Flash Player 9, AIR 1.1

Loads the state of this object.

Parametri

state:Object — State of this object to load. This will be null when loading the initial state of the application.

Esempio
Come utilizzare questo esempio
The following code loads the selected index and search string from the saved state.

	  public function loadState(state:Object):void
	  {
	  	// First, check to see if state is null. When the app is reset
	  	// back to its initial state, loadState() is passed null.
	  	if (state == null)
	  	{
	 		myList.selectedIndex = -1;
	  		mySearchInput.text = "";
	  	}
	  	else
	  	{
	  		myList.selectedIndex = state.selectedIndex;
	  		mySearchInput.text = state.searchString;
	  	}
	  }

saveState

()

metodo

public function saveState():Object

Versione linguaggio:

ActionScript 3.0

Versione prodotto:

Flex 3

Versioni runtime:

Flash Player 9, AIR 1.1

Saves the state of this object. The object contains name:value pairs for each property to be saved with the state.

The History Manager collects the state information from all components and encodes the information in a URL format. Most browsers have a length limitation on URLs, so the state information returned should be as minimal as possible.

Restituisce

Object — The state of this object.

Esempio
Come utilizzare questo esempio
The following code saves the selected index from a List, and a search string.

	  public function saveState():Object
	  {
	  	var state:Object = {};
	 
	  	state.selectedIndex = myList.selectedIndex;
	  	state.searchString = mySearchInput.text;
	 
	  	return state;
	 }

toString

()

metodo

public function toString():String

Versione linguaggio:

ActionScript 3.0

Versione prodotto:

Flex 3

Versioni runtime:

Flash Player 9, AIR 1.1

Converts this object to a unique string. Implemented by UIComponent.

Restituisce

String — The unique identifier for this object.

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IHistoryManagerClient - AS3 Flex

Classi x

loadState

saveState

toString