Package | mx.managers |
Class | public class FocusManager |
Inheritance | FocusManager ![]() ![]() |
Implements | IFocusManager |
Language Version: | ActionScript 3.0 |
Product Version: | Flex 3 |
Runtime Versions: | Flash Player 9, AIR 1.1 |
The FocusManager manages focus from the "component level". In Flex, a UITextField in a component is the only way to allow keyboard entry of text. To the Flash Player or AIR, that UITextField has focus. However, from the FocusManager's perspective the component that parents the UITextField has focus. Thus there is a distinction between component-level focus and player-level focus. Application developers generally only have to deal with component-level focus while component developers must understand player-level focus.
All components that can be managed by the FocusManager must implement mx.managers.IFocusManagerComponent, whereas objects managed by player-level focus do not.
The FocusManager also managers the concept of a defaultButton, which is the Button on a form that dispatches a click event when the Enter key is pressed depending on where focus is at that time.
More examples
Property | Defined By | ||
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![]() | constructor : Object
A reference to the class object or constructor function for a given object instance. | Object |
Method | Defined By | ||
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![]() | addEventListener(type:String, listener:Function, useCapture:Boolean = false, priority:int = 0, useWeakReference:Boolean = false):void
Registers an event listener object with an EventDispatcher object so that the listener
receives notification of an event. | EventDispatcher | |
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Dispatches an event into the event flow. | EventDispatcher | |
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Checks whether the EventDispatcher object has any listeners registered for a specific type
of event. | EventDispatcher | |
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Indicates whether an object has a specified property defined. | Object | |
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Indicates whether an instance of the Object class is in the prototype chain of the object specified
as the parameter. | Object | |
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Indicates whether the specified property exists and is enumerable. | Object | |
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Removes a listener from the EventDispatcher object. | EventDispatcher | |
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Sets the availability of a dynamic property for loop operations. | Object | |
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Returns the string representation of this object, formatted according to locale-specific conventions. | Object | |
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Returns the primitive value of the specified object. | Object | |
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Checks whether an event listener is registered with this EventDispatcher object or any of
its ancestors for the specified event type. | EventDispatcher |
Wed Nov 21 2018, 06:34 AM -08:00