HasAllKeyHandlers abstract class
Convenience interface used to implement all key handlers at once.
WARNING, PLEASE READ: In the unlikely event that more key handler subtypes are added to GWT, this interface will be expanded, so only implement this interface if you wish to have your widget break if a new key event type is introduced.
abstract class HasAllKeyHandlers implements HasKeyUpHandlers,
HasKeyDownHandlers, HasKeyPressHandlers {
}
Subclasses
FocusPanel, FocusWidget, Tab, Tree
Implements
HasKeyPressHandlers, HasKeyDownHandlers, HasKeyUpHandlers
Methods
abstract HandlerRegistration addKeyDownHandler(KeyDownHandler handler) #
Adds a {@link KeyDownEvent} handler.
@param handler the key down handler @return {@link HandlerRegistration} used to remove this handler
abstract HandlerRegistration addKeyPressHandler(KeyPressHandler handler) #
Adds a {@link KeyPressEvent} handler.
@param handler the key press handler @return {@link HandlerRegistration} used to remove this handler
abstract HandlerRegistration addKeyUpHandler(KeyUpHandler handler) #
Adds a {@link KeyUpEvent} handler.
@param handler the key up handler @return {@link HandlerRegistration} used to remove this handler
abstract void fireEvent(DwtEvent event) #
Fires the given event to the handlers listening to the event's type.
Any exceptions thrown by handlers will be bundled into a UmbrellaException and then re-thrown after all handlers have completed. An exception thrown by a handler will not prevent other handlers from executing.
@param event the event