ActionScript® 3.0 Reference for the Adobe® Flash® Platform
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fl.managers 

FocusManager  - AS3 Flash

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com.adobe.dct.component
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com.adobe.fiber.runtime.lib
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com.adobe.icomm.assetplacement.controller
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com.adobe.livecycle.assetmanager.client
com.adobe.livecycle.assetmanager.client.event
com.adobe.livecycle.assetmanager.client.handler
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com.adobe.livecycle.assetmanager.client.model
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com.adobe.livecycle.assetmanager.client.service
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com.adobe.livecycle.assetmanager.client.utils
com.adobe.livecycle.content
com.adobe.livecycle.rca.model
com.adobe.livecycle.rca.model.constant
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com.adobe.livecycle.rca.model.stage
com.adobe.livecycle.rca.service
com.adobe.livecycle.rca.service.core
com.adobe.livecycle.rca.service.core.delegate
com.adobe.livecycle.rca.service.process
com.adobe.livecycle.rca.service.process.delegate
com.adobe.livecycle.rca.token
com.adobe.livecycle.ria.security.api
com.adobe.livecycle.ria.security.service
com.adobe.mosaic.layouts
com.adobe.mosaic.layouts.dragAndDrop
com.adobe.mosaic.layouts.interfaces
com.adobe.mosaic.mxml
com.adobe.mosaic.om.constants
com.adobe.mosaic.om.events
com.adobe.mosaic.om.impl
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com.adobe.mosaic.skinning
com.adobe.mosaic.sparklib.editors
com.adobe.mosaic.sparklib.optionMenu
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com.adobe.mosaic.sparklib.tabLayout
com.adobe.mosaic.sparklib.tabLayout.events
com.adobe.mosaic.sparklib.tabLayout.layouts
com.adobe.mosaic.sparklib.tabLayout.skins
com.adobe.mosaic.sparklib.text
com.adobe.mosaic.sparklib.util
com.adobe.solutions.acm.authoring.presentation
com.adobe.solutions.acm.authoring.presentation.actionbar
com.adobe.solutions.acm.authoring.presentation.common
com.adobe.solutions.acm.authoring.presentation.events
com.adobe.solutions.acm.authoring.presentation.fragment
com.adobe.solutions.acm.authoring.presentation.letter
com.adobe.solutions.acm.authoring.presentation.letter.data
com.adobe.solutions.acm.authoring.presentation.preview
com.adobe.solutions.acm.authoring.presentation.rte
com.adobe.solutions.acm.ccr.presentation
com.adobe.solutions.acm.ccr.presentation.contentcapture
com.adobe.solutions.acm.ccr.presentation.contentcapture.events
com.adobe.solutions.acm.ccr.presentation.contentcapture.preview
com.adobe.solutions.acm.ccr.presentation.datacapture
com.adobe.solutions.acm.ccr.presentation.datacapture.renderers
com.adobe.solutions.acm.ccr.presentation.pdf
com.adobe.solutions.exm
com.adobe.solutions.exm.authoring
com.adobe.solutions.exm.authoring.components.controls
com.adobe.solutions.exm.authoring.components.toolbars
com.adobe.solutions.exm.authoring.domain
com.adobe.solutions.exm.authoring.domain.expression
com.adobe.solutions.exm.authoring.domain.impl
com.adobe.solutions.exm.authoring.domain.method
com.adobe.solutions.exm.authoring.domain.variable
com.adobe.solutions.exm.authoring.enum
com.adobe.solutions.exm.authoring.events
com.adobe.solutions.exm.authoring.model
com.adobe.solutions.exm.authoring.renderer
com.adobe.solutions.exm.authoring.view
com.adobe.solutions.exm.expression
com.adobe.solutions.exm.impl
com.adobe.solutions.exm.impl.method
com.adobe.solutions.exm.method
com.adobe.solutions.exm.mock
com.adobe.solutions.exm.mock.method
com.adobe.solutions.exm.runtime
com.adobe.solutions.exm.runtime.impl
com.adobe.solutions.exm.variable
com.adobe.solutions.prm.constant
com.adobe.solutions.prm.domain
com.adobe.solutions.prm.domain.factory
com.adobe.solutions.prm.domain.impl
com.adobe.solutions.prm.domain.manager
com.adobe.solutions.prm.presentation.asset
com.adobe.solutions.prm.presentation.constant
com.adobe.solutions.prm.presentation.document
com.adobe.solutions.prm.presentation.event
com.adobe.solutions.prm.presentation.file
com.adobe.solutions.prm.presentation.project
com.adobe.solutions.prm.presentation.team
com.adobe.solutions.prm.presentation.util
com.adobe.solutions.prm.service
com.adobe.solutions.prm.services.impl
com.adobe.solutions.prm.vo
com.adobe.solutions.rca.constant
com.adobe.solutions.rca.domain
com.adobe.solutions.rca.domain.common
com.adobe.solutions.rca.domain.factory
com.adobe.solutions.rca.domain.impl
com.adobe.solutions.rca.domain.impl.manager
com.adobe.solutions.rca.domain.manager
com.adobe.solutions.rca.presentation
com.adobe.solutions.rca.presentation.comment
com.adobe.solutions.rca.presentation.constant
com.adobe.solutions.rca.presentation.event
com.adobe.solutions.rca.presentation.gantt
com.adobe.solutions.rca.presentation.gantt.ruler
com.adobe.solutions.rca.presentation.template
com.adobe.solutions.rca.presentation.template.audit
com.adobe.solutions.rca.presentation.template.definition
com.adobe.solutions.rca.presentation.template.documents
com.adobe.solutions.rca.presentation.template.stages
com.adobe.solutions.rca.presentation.util
com.adobe.solutions.rca.service
com.adobe.solutions.rca.services.impl
com.adobe.solutions.rca.vo
com.adobe.solutions.rca.vo.um
com.adobe.viewsource
fl.accessibility
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xd.core.axm.enterprise.view.components
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Language Elements

Global Constants
Global Functions
Operators
Statements, Keywords & Directives
Special Types

Appendixes

What's New
Compiler Errors
Compiler Warnings
Run-Time Errors
Migrating to ActionScript 3
Supported Character Sets
MXML Only Tags
Motion XML Elements
Timed Text Tags
List of deprecated elements
Accessibility Implementation Constants
How to Use ActionScript Examples
Legal notices
Packagefl.managers
Classpublic class FocusManager
InheritanceFocusManager Inheritance Object
Implements IFocusManager

Language Version: ActionScript 3.0
Product Version: Flash CS3
Runtime Versions: Flash Player 9.0.28.0, AIR 1.0

The FocusManager class manages focus for a set of components that are navigated by mouse or keyboard as a tab loop.

A tab loop is typically navigated by using the Tab key; focus moves between the components in the tab loop in a circular pattern from the first component that has focus, to the last, and then back again to the first. A tab loop includes all the components and tab-enabled components in a container. An application can contain numerous tab loops.

A FocusManager instance is responsible for a single tab loop; an application uses a different FocusManager instance to manage each tab loop that it contains, although a main application is always associated with at least one FocusManager instance. An application may require additional FocusManager instances if it includes a popup window, for example, that separately contains one or more tab loops of components.

All components that can be managed by a FocusManager instance must implement the fl.managers.IFocusManagerComponent interface. Objects for which Flash Player manages focus are not required to implement the IFocusManagerComponent interface.

The FocusManager class also manages how the default button is implemented. A default button dispatches a click event when the Enter key is pressed on a form, depending on where focus is at the time. The default button does not dispatch the click event if a text area has focus or if a value is being edited in a component, for example, in a ComboBox or NumericStepper component.

View the examples

Related API Elements



Public Properties
 PropertyDefined By
 Inheritedconstructor : Object
A reference to the class object or constructor function for a given object instance.
Object
  defaultButton : Button
Gets or sets the current default button.
FocusManager
  defaultButtonEnabled : Boolean
Gets or sets a value that indicates whether the default button is enabled.
FocusManager
  form : DisplayObjectContainer
Base DisplayObjectContainer for the IFocusManager, usually the stage.
FocusManager
  nextTabIndex : int
[read-only] Gets the next unique tab index to use in this tab loop.
FocusManager
  showFocusIndicator : Boolean
Gets or sets a value that indicates whether a component that has focus should be marked with a visual indicator of focus.
FocusManager
Public Methods
 MethodDefined By
  
Creates a new FocusManager instance.
FocusManager
  
Activates the FocusManager instance.
FocusManager
  
Deactivates the FocusManager.
FocusManager
  
Retrieves the interactive object that contains the given object, if any.
FocusManager
  
Gets the interactive object that currently has focus.
FocusManager
  
Retrieves the interactive object that would receive focus if the user pressed the Tab key to navigate to the next object.
FocusManager
 Inherited
Indicates whether an object has a specified property defined.
Object
  
Sets the showFocusIndicator value to false and removes the visual focus indicator from the object that has focus, if any.
FocusManager
 Inherited
Indicates whether an instance of the Object class is in the prototype chain of the object specified as the parameter.
Object
 Inherited
Indicates whether the specified property exists and is enumerable.
Object
  
Sets focus on an IFocusManagerComponent component.
FocusManager
 Inherited
Sets the availability of a dynamic property for loop operations.
Object
  
Sets the showFocusIndicator value to true and draws the visual focus indicator on the object with focus, if any.
FocusManager
 Inherited
Returns the string representation of this object, formatted according to locale-specific conventions.
Object
 Inherited
Returns the string representation of the specified object.
Object
 Inherited
Returns the primitive value of the specified object.
Object
Property Detail

defaultButton

property
defaultButton:Button

Language Version: ActionScript 3.0
Product Version: Flash CS3
Runtime Versions: Flash Player 9.0.28.0, AIR 1.0

Gets or sets the current default button.

The default button is the button on a form that dispatches a click event when the Enter key is pressed, depending on where focus is at the time.



Implementation
    public function get defaultButton():Button
    public function set defaultButton(value:Button):void

defaultButtonEnabled

property 
defaultButtonEnabled:Boolean

Language Version: ActionScript 3.0
Product Version: Flash CS3
Runtime Versions: Flash Player 9.0.28.0, AIR 1.0

Gets or sets a value that indicates whether the default button is enabled. If this value is set to true, the focus manager monitors the Enter key and dispatches a click event on the default button if the Enter key is pressed when a component that is not a Button component has focus. If this value is set to false, the focus manager does not monitor the Enter key. Components that use the Enter key set this property to false to prevent a click event from being dispatched on the default button, if one exists, when a user presses the Enter key.



Implementation
    public function get defaultButtonEnabled():Boolean
    public function set defaultButtonEnabled(value:Boolean):void

form

property 
form:DisplayObjectContainer

Language Version: ActionScript 3.0
Runtime Versions: AIR 1.0, Flash Player 9.0.28.0

Base DisplayObjectContainer for the IFocusManager, usually the stage.



Implementation
    public function get form():DisplayObjectContainer
    public function set form(value:DisplayObjectContainer):void

nextTabIndex

property 
nextTabIndex:int  [read-only]

Language Version: ActionScript 3.0
Product Version: Flash CS3
Runtime Versions: Flash Player 9.0.28.0, AIR 1.0

Gets the next unique tab index to use in this tab loop.



Implementation
    public function get nextTabIndex():int

showFocusIndicator

property 
showFocusIndicator:Boolean

Language Version: ActionScript 3.0
Product Version: Flash CS3
Runtime Versions: Flash Player 9.0.28.0, AIR 1.0

Gets or sets a value that indicates whether a component that has focus should be marked with a visual indicator of focus.



Implementation
    public function get showFocusIndicator():Boolean
    public function set showFocusIndicator(value:Boolean):void
Constructor Detail

FocusManager

()Constructor
public function FocusManager(container:DisplayObjectContainer)

Language Version: ActionScript 3.0
Product Version: Flash CS3
Runtime Versions: Flash Player 9.0.28.0, AIR 1.0

Creates a new FocusManager instance.

A focus manager manages focus within the children of a DisplayObjectContainer object.

Parameters
container:DisplayObjectContainer — A DisplayObjectContainer that hosts the focus manager, or stage.
Method Detail

activate

()method
public function activate():void

Language Version: ActionScript 3.0
Product Version: Flash CS3
Runtime Versions: Flash Player 9.0.28.0, AIR 1.0

Activates the FocusManager instance.

The FocusManager instance adds event handlers that allow it to monitor focus-related keyboard and mouse activity.

deactivate

()method 
public function deactivate():void

Language Version: ActionScript 3.0
Product Version: Flash CS3
Runtime Versions: Flash Player 9.0.28.0, AIR 1.0

Deactivates the FocusManager.

The FocusManager removes the event handlers that allow it to monitor focus-related keyboard and mouse activity.

findFocusManagerComponent

()method 
public function findFocusManagerComponent(component:InteractiveObject):InteractiveObject

Language Version: ActionScript 3.0
Product Version: Flash CS3
Runtime Versions: Flash Player 9.0.28.0, AIR 1.0

Retrieves the interactive object that contains the given object, if any. The player can set focus to a subcomponent of a Flash component; this method determines which interactive object has focus from the component perspective.

Parameters

component:InteractiveObject — An object that can have player-level focus.

Returns
InteractiveObject — The object containing the component or, if one is not found, the component itself.

getFocus

()method 
public function getFocus():InteractiveObject

Language Version: ActionScript 3.0
Product Version: Flash CS3
Runtime Versions: Flash Player 9.0.28.0, AIR 1.0

Gets the interactive object that currently has focus. Adobe recommends calling this method instead of using the Stage object because this method indicates which component has focus. The Stage might return a subcomponent in that component.

Returns
InteractiveObject — The interactive object that currently has focus.

getNextFocusManagerComponent

()method 
public function getNextFocusManagerComponent(backward:Boolean = false):InteractiveObject

Language Version: ActionScript 3.0
Product Version: Flash CS3
Runtime Versions: Flash Player 9.0.28.0, AIR 1.0

Retrieves the interactive object that would receive focus if the user pressed the Tab key to navigate to the next object. This method retrieves the object that currently has focus if there are no other valid objects in the application.

Parameters

backward:Boolean (default = false) — If this parameter is set to true, focus moves in a backward direction, causing this method to retrieve the object that would receive focus next if the Shift+Tab key combination were pressed.

Returns
InteractiveObject — The next component to receive focus.

hideFocus

()method 
public function hideFocus():void

Language Version: ActionScript 3.0
Product Version: Flash CS3
Runtime Versions: Flash Player 9.0.28.0, AIR 1.0

Sets the showFocusIndicator value to false and removes the visual focus indicator from the object that has focus, if any.

setFocus

()method 
public function setFocus(component:InteractiveObject):void

Language Version: ActionScript 3.0
Product Version: Flash CS3
Runtime Versions: Flash Player 9.0.28.0, AIR 1.0

Sets focus on an IFocusManagerComponent component. This method does not check for component visibility, enabled state, or other conditions.

Parameters

component:InteractiveObject — An object that can receive focus.

showFocus

()method 
public function showFocus():void

Language Version: ActionScript 3.0
Product Version: Flash CS3
Runtime Versions: Flash Player 9.0.28.0, AIR 1.0

Sets the showFocusIndicator value to true and draws the visual focus indicator on the object with focus, if any.

FocusManagerExample.as

This example demonstrates how to use the FocusManager class to change focus between components on the Stage.

To run the example, follow these steps:

  1. Add the TextInput component to the library.
  2. Save this code as FocusManagerExample.as in the same directory as your FLA file.
  3. Set the Document class in the FLA file to FocusManagerExample.
package
{
    import fl.controls.TextInput;
    import fl.managers.FocusManager;
    import flash.display.InteractiveObject;
    import flash.display.Sprite;
    import flash.events.*;
    import flash.utils.Timer;

    public class FocusManagerExample extends Sprite 
    {
        private var fm:FocusManager;
        
        public function FocusManagerExample() {
            buildGridOfTextInputs();

            fm = new FocusManager(this);
            var t:Timer = new Timer(1000);
            t.addEventListener(TimerEvent.TIMER,secondPassed);
            t.start();
        }
        private function buildGridOfTextInputs():void {
            var rowSpacing:uint = 30;
            var colSpacing:uint = 110;
            var totalRows:uint = 4;
            var totalCols:uint = 3;
            var i:uint;
            
            for(i = 0; i < totalRows * totalCols; i++) {
                var ti:TextInput = new TextInput()
                ti.name = "component"+i.toString();
                ti.addEventListener(FocusEvent.FOCUS_IN,focusChange);
                ti.setSize(100,20);
                ti.x = 10 + ((i % totalCols) * colSpacing);
                ti.y = 10 + (Math.floor(i / totalCols) * rowSpacing);
                ti.tabEnabled = true;
                addChild(ti);
            }
        }
        private function secondPassed(e:TimerEvent):void {
            var nextComponent:InteractiveObject = fm.getNextFocusManagerComponent();
            fm.setFocus(nextComponent);    
        }
        
        private function focusChange(e:FocusEvent):void {
            trace("Focus change: " + e.target.name);
        }
    }
}