Adobe® Flex® 4 Language Reference
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mx.managers 
IHistoryManagerClient 
Packagemx.managers
Interfacepublic interface IHistoryManagerClient
Implementors Accordion, ViewStack

Language Version: ActionScript 3.0
Product Version: Flex 3
Runtime Versions: 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.

See also



Public Methods
 MethodDefined By
  
Loads the state of this object.
IHistoryManagerClient
  
Saves the state of this object.
IHistoryManagerClient
  
Converts this object to a unique string.
IHistoryManagerClient
Method Detail

loadState

()method
public function loadState(state:Object):void

Language Version: ActionScript 3.0
Product Version: Flex 3
Runtime Versions: Flash Player 9, AIR 1.1

Loads the state of this object.

Parameters

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


Example
How to use this example
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

()method 
public function saveState():Object

Language Version: ActionScript 3.0
Product Version: Flex 3
Runtime Versions: 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.

Returns
Object — The state of this object.

Example
How to use this example
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

()method 
public function toString():String

Language Version: ActionScript 3.0
Product Version: Flex 3
Runtime Versions: Flash Player 9, AIR 1.1

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

Returns
String — The unique identifier for this object.