Accessibility::DeviceEventController Interface Reference

The interface via which clients request notification of device events, and through which device events may be simulated. More...

import "Accessibility_Registry.idl";

List of all members.

Public Member Functions
boolean	registerKeystrokeListener (in DeviceEventListener listener, in KeySet keys, in ControllerEventMask mask, in KeyEventTypeSeq type, in EventListenerMode mode)
	Register to intercept keyboard events, and either pass them on or consume them.
void	deregisterKeystrokeListener (in DeviceEventListener listener, in KeySet keys, in ControllerEventMask mask, in KeyEventTypeSeq type)
	De-register a previously registered keyboard eventlistener.
boolean	registerDeviceEventListener (in DeviceEventListener listener, in EventTypeSeq typeseq)
	Register to intercept events, and either pass them on or consume them.
void	deregisterDeviceEventListener (in DeviceEventListener listener, in EventTypeSeq typeseq)
	De-register a previously registered keyboard eventlistener.
boolean	notifyListenersSync (in DeviceEvent event)
	Notify the Registry instance that a device event has taken place, and allow pre-emptive listeners the opportunity to 'consume' the event and thus prevent its further issuance/forwarding.
oneway void	notifyListenersAsync (in DeviceEvent event)
	Notify the Registry instance that a device event has taken place in an asynchronous manner.
void	generateKeyboardEvent (in long keycode, in string keystring, in KeySynthType type)
	Synthesize a keyboard event.
void	generateMouseEvent (in long x, in long y, in string eventName)
	Synthesize a mouse event.

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Detailed Description

The interface via which clients request notification of device events, and through which device events may be simulated.

Definition at line 403 of file Accessibility_Registry.idl.

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Member Function Documentation

boolean Accessibility::DeviceEventController::registerKeystrokeListener (  in DeviceEventListener  listener, in KeySet  keys, in ControllerEventMask  mask, in KeyEventTypeSeq  type, in EventListenerMode  mode )

Register to intercept keyboard events, and either pass them on or consume them. Parameters: listener,:  a DeviceEventListener which will intercept key events. keys,:  a KeySet indicating which keys to intercept, or KEYSET_ALL_KEYS. mask,:  a ControllerEventMask filtering the intercepted key events. type,:  a KeyEventTypeSeq that may created by ORing event types together. mode,:  an EventListenerMode indicating whether the listener should receive the events synchronously, potentially consuming them, or just be notified asynchronously of those events that have been generated. Note: Some platforms have limited support for global, preemptive EventListenerMode. Such a registration may fail if another client already has priority for preemptive access to one or more of the members of the KeySet. AT consumers have the option of re-trying the request without the global flag, or without the preemptive flag, or of re-trying with a different KeySet. The best support for pre-emptive global keyboard listeners is provided on platforms whose Xserver implementation provides the XEvIE extension. Returns: True if the DeviceEventListener was successfully registered for the requested KeySet, ControllerEventMask, event types, and EventListenerMode; otherwise returns False.

void Accessibility::DeviceEventController::deregisterKeystrokeListener (  in DeviceEventListener  listener, in KeySet  keys, in ControllerEventMask  mask, in KeyEventTypeSeq  type )

De-register a previously registered keyboard eventlistener. Parameters: listener,:  a DeviceEventListener which will intercept key events. keys,:  a KeySet indicating which keys to intercept, or KEYSET_ALL_KEYS. mask,:  a ControllerEventMask filtering the intercepted key events. type,:  an EventType mask that may created by ORing event types together.

boolean Accessibility::DeviceEventController::registerDeviceEventListener (  in DeviceEventListener  listener, in EventTypeSeq  typeseq )

Register to intercept events, and either pass them on or consume them. To listen to keyboard events use registerKeystrokeListener instead. Parameters: listener,:  a DeviceEventListener which will intercept events. typeseq,:  an EventTypeSeq indicating which event types to listen for. Returns: True if successful, False if not

void Accessibility::DeviceEventController::deregisterDeviceEventListener (  in DeviceEventListener  listener, in EventTypeSeq  typeseq )

De-register a previously registered keyboard eventlistener. Parameters: listener,:  a DeviceEventListener which will intercept events. typeseq,:  an EventTypeSeq indicating which event types to stop listening for.

boolean Accessibility::DeviceEventController::notifyListenersSync (  in DeviceEvent  event  )

Notify the Registry instance that a device event has taken place, and allow pre-emptive listeners the opportunity to 'consume' the event and thus prevent its further issuance/forwarding. This is the method used by accessibility bridges to forward "toolkit dependent" device events to the Registry from the application's process space. Note: AT clients do not normally need to use this method, it is intended for use by toolkit bridges and special-purpose applications. Returns: True if the event was consumed by a (pre-emptive) listener, False if not (in which case the device event will be forwarded as normal to any application which would normally receive it, e.g. the currently active application in the case of mouse or keyboard events).

oneway void Accessibility::DeviceEventController::notifyListenersAsync (  in DeviceEvent  event  )

Notify the Registry instance that a device event has taken place in an asynchronous manner. This is the method used by accessibility bridges to forward "toolkit dependent" device events to the Registry from the application's process space. If the event in question is potentially pre-emptible. notifyListenersSync should be used instead. Note: AT clients do not normally need to use this method, it is intended for use by toolkit bridges and special-purpose applications.

void Accessibility::DeviceEventController::generateKeyboardEvent (  in long  keycode, in string  keystring, in KeySynthType  type )

Synthesize a keyboard event. Parameters: keycode,:  a long integer indicating the keycode of the keypress to be synthesized. keystring,:  an optional UTF-8 string indicating a complex keyboard input event. type,:  a KeySynthType indicating the type of event(s) to be synthesized: a key press, release, press-release pair, or a complex input string (for instance from an internationalized or complex text input method, or a composed character). Note: keycode may be truncated before being processed, as keycode length may be platform-dependent and keycode ranges are generally much smaller than CORBA_long. One or the other of keycode or keystring are generally NULL, (but not both), depending on the value of type.

void Accessibility::DeviceEventController::generateMouseEvent (  in long  x, in long  y, in string  eventName )

Synthesize a mouse event. Parameters: x,:  a long integer indicating the screen x coord for the mouse event. y,:  a long integer indicating the screen y coord for the mouse event. eventName,:  a string indicating the type of mouse event, e.g. "button1up"

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The documentation for this interface was generated from the following file:

• Accessibility_Registry.idl

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