net.mumie.mathletfactory.action.handler.global

Class GlobalKeyboardSelectionHandler

java.lang.Object

net.mumie.mathletfactory.action.handler.global.GlobalHandler

net.mumie.mathletfactory.action.handler.global.GlobalKeyboardSelectionHandler

public class GlobalKeyboardSelectionHandler
extends GlobalHandler

This handler allows the selection of objects in the MMCanvas by using the tabulator key or +tabulator.

Author:

Paehler

Document status:

finished

Field Summary

Fields inherited from class net.mumie.mathletfactory.action.handler.global.GlobalHandler

m_active, m_canvas

Constructor Summary

Constructors

Constructor and Description
GlobalKeyboardSelectionHandler(MMCanvas canvas) Constructs the handler to work in the given canvas.

Method Summary

Methods

Modifier and Type	Method and Description
boolean	doAction(MMEvent event) Processes the incoming MMEvent by executing the user defined actions, if this GlobalHandler can work with it (see dealsWith ).
void	finish() This method is called, when an action finishes (a mouse button is released after dragging or klicking, a previously pressed key is released, etc.).
boolean	userDefinedDealsWith(MMEvent event) Returns true for tab or +tab key events.

Methods inherited from class net.mumie.mathletfactory.action.handler.global.GlobalHandler

dealsWith, getCanvas, isActive, setActive

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

GlobalKeyboardSelectionHandler

public GlobalKeyboardSelectionHandler(MMCanvas canvas)

Constructs the handler to work in the given canvas.

Method Detail

doAction

public boolean doAction(MMEvent event)

Description copied from class: GlobalHandler

Processes the incoming MMEvent by executing the user defined actions, if this GlobalHandler can work with it (see dealsWith ).

Specified by:

doAction in class GlobalHandler

See Also:

GlobalHandler.dealsWith(net.mumie.mathletfactory.action.MMEvent), net.mumie.mathletfactory.action.DefaultCanvasController#controlAction()

userDefinedDealsWith

public boolean userDefinedDealsWith(MMEvent event)

Returns true for tab or +tab key events.

Specified by:

userDefinedDealsWith in class GlobalHandler

finish

public void finish()

Description copied from class: GlobalHandler

This method is called, when an action finishes (a mouse button is released after dragging or klicking, a previously pressed key is released, etc.). This method must be called when an action cycle shall be properly terminated, typically it will be called within the finishAction method in CanvasControllerIF.

This method is dedicated to clean up internal settings in this GlobalHandler, so that it will be prepared for properly processing a new action cycle.

Specified by:

finish in class GlobalHandler