Properties

activeTarget source

The logical component that has focus within the application

This can be used as the proximal target for dispatching in situations where it logically makes sense that and event, while created by some other component, should appear to originate from where the user is currently focused.

This is particularly useful for things such as keyboard shortcuts or menuAction events.

Prior to setting the activeTarget manually the desired target should be checked to see if it acceptsActiveTarget. In the course of then setting that target as the activeTarget, the current activeTarget will be instructed to surrendersActiveTarget. If the activeTarget refuses to surrender, the change is rejected.

application :string source

The application object associated with the event manager.

Default Value:	null

delegate :string source

Default Value:	null

isStoringMouseEventsWhileDraggingOnly :Function source

Default Value:	{boolean} true

isStoringPointerEvents :Function source

Default Value:	{boolean} false

registeredEventListeners :Listeners source

Registered event listeners.

Default Value:	{}

Methods

actualDOMTargetForEventTypeOnTarget(eventType, target) source

Determines the actual target to observe given a target and an eventType. This correctly decides whether to observe the element specified or to observe some other element to leverage event delegation. This should be consulted whenever starting or stopping the observation of a target for a given eventType.

Parameters:

Name	Type	Description
eventType	Event
target	Event

Returns:

null || target.screen ? target.document : target.ownerDocument

claimPointer(pointer, component) source

Claims that a pointer, referred to by the specified pointer identifier, is claimed by the specified component. This does not give the component exclusive use of the pointer per se, but does indicate that the component is acting in a manner where it expects to be the only one performing major actions in response to this pointer. Other components should respect the claimant's desire to react to this pointer in order to prevent an entire hierarchy of components from reacting to a pointer in potentially conflicting ways.

If the pointer is currently claimed by another component that component is asked to surrender the pointer, which is may or may not agree to do.

Parameters:

Name	Type	Description
pointer	string	The pointer identifier to claim
component	string	The component that is claiming the specified pointer.

Returns:

boolean Whether or not the pointer was successfully claimed.

componentClaimingPointer(pointer) source

The component claiming the specified pointer component

Parameters:

Name	Type	Description
pointer	string	The pointer identifier in question

Returns:

component

eventHandlerForElement(anElement) source

Parameters:

Name	Type	Description
anElement	Element

Returns:

this._elementEventHandlerByUUID[anElement.eventHandlerUUID]

forfeitAllPointers(component) source

Forfeits all pointers from the specified component.

Parameters:

Name	Type	Description
component	Component

forfeitPointer(pointer, component) source

Forfeits the specified pointer identifier from the specified component. The specified component must be the current claimant.

Parameters:

Name	Type	Description
pointer	string	The pointer identifier in question
component	string	The component that is trying to forfeit the specified pointer

handleEvent(event) source

Parameters:

Name	Type	Description
event	Event	The handled event.

initWithWindow(aWindow) source

Parameters:

Name	Type	Description
aWindow	Window

Returns:

this.registerWindow(aWindow)

isPointerClaimedByComponent(pointer, component) source

Whether or not the specified pointer identifier is claimed by the specified component.

Parameters:

Name	Type	Description
pointer	string	The pointer identifier in question
component	string	The component to interrogate regarding ownership of the specified pointer

Returns:

boolean

methodNameForBubblePhaseOfEventType() source

pointerMotion(identifier) source

Parameters:

Name	Type	Description
identifier	attribute

registeredEventListenersForEventType_(eventType) source

Returns a dictionary of all listeners registered for the specified eventType, regardless of the target being observed.

Parameters:

Name	Type	Description
eventType	Event	The event type.

Returns:

null || listeners

registeredEventListenersForEventType_onTarget_(eventType, target) source

Returns the dictionary of all listeners registered for the specified eventType, on the specified target.

Parameters:

Name	Type	Description
eventType	Event	The event type.
target	Event	The event target.

Returns:

targetRegistration ? targetRegistration.listeners : null

registeredEventListenersOnTarget_(target) source

Returns the dictionary of all listeners registered on the specified target, keyed by eventType.

Parameters:

Name	Type	Description
target	Event	The event target.

Returns:

observedEventListeners

registerEventHandlerForElement(anElementEventHandler, anElement) source

Parameters:

Name	Type	Description
anElementEventHandler	Event
anElement	Element

registerEventListener(target, eventType, listener, useCapture) source

This adds the listener to the definitive collection of what targets are being observed for what eventTypes by whom and in what phases. This collection maintained by the EventManager is used throughout the discovery and distribution steps of the event handling system.

Parameters:

Name	Type	Description
target	Event	The event target.
eventType	Event	The event type.
listener	Event	The event listener.
useCapture	Event	The event capture.

Returns:

returnResult

registerWindow(aWindow) source

Parameters:

Name	Type	Description
aWindow	Window

reset() source

unload() source

unregisterEventHandlerForElement(anElement) source

Parameters:

Name	Type	Description
anElement	Element

unregisterEventListener(target, eventType, listener, useCapture) source

This unregisters the listener.

Parameters:

Name	Type	Description
target	Event	The event target.
eventType	Event	The event type.
listener	Event	The event listener.
useCapture	Event	The event capture.

unregisterWindow(aWindow) source

Parameters:

Name	Type	Description
aWindow	Window

unregisterWindows() source

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