hades.gui
Class MoveCommand

java.lang.Object
  java.util.EventObject
      hades.gui.Command
          hades.gui.MoveCommand

All Implemented Interfaces:

java.awt.event.ActionListener, java.util.EventListener, FigCanvasListener, java.awt.event.KeyListener, java.awt.event.MouseListener, java.awt.event.MouseMotionListener, java.io.Serializable

public class MoveCommand

extends Command

MoveCommand - move an SimObject in a HADES Design.

See Also:

Serialized Form

Field Summary

(package private) ObjectCanvas	canvas
(package private) java.awt.Point	newPos
(package private) java.awt.Point	oldPos
(package private) SimObject	target

Fields inherited from class hades.gui.Command

console, debug, editor, ready, versionString

Fields inherited from class java.util.EventObject

source

Constructor Summary

MoveCommand(Editor editor)
the default constructor for all MoveCommand objects.

Method Summary

void	cancel()
void	execute() perform the action corresponding to this MoveCommand object and register it with the UndoStack.
java.lang.String	getDescription()
void	mousePressed(FigCanvasEvent ME) extract the screen and world coordinates of this Event, and dispatch to setPosition().
void	setPosition(java.awt.Point SP, java.awt.Point WP) this method should be called twice for a move command.
java.lang.String	toString() toString(): identify this MoveCommand
void	undo() try to undo the action corresponding to this MoveCommand object.

Methods inherited from class hades.gui.Command

actionPerformed, dbg, getLogExtraArguments, initialize, isReady, keyPressed, keyReleased, keyTyped, message, mouseClicked, mouseDragged, mouseEntered, mouseExited, mouseMoved, mousePressed, mouseReleased, statusMessage, writePositionLogMessage

Methods inherited from class java.util.EventObject

getSource

Methods inherited from class java.lang.Object

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

Field Detail

oldPos

java.awt.Point oldPos

newPos

java.awt.Point newPos

target

SimObject target

canvas

ObjectCanvas canvas

Constructor Detail

MoveCommand

public MoveCommand(Editor editor)

the default constructor for all MoveCommand objects. The Object 'target' is the object to be modified by this MoveCommand.

Note that other parameter values (like names, event sources, ...) should be set later on with calls to the corresponding event dispatcher methods, e.g. mousePressed().

Method Detail

execute

public void execute()

perform the action corresponding to this MoveCommand object and register it with the UndoStack.

Overrides:

execute in class Command

cancel

public void cancel()

Overrides:

cancel in class Command

undo

public void undo()

try to undo the action corresponding to this MoveCommand object.

Overrides:

undo in class Command

mousePressed

public void mousePressed(FigCanvasEvent ME)

extract the screen and world coordinates of this Event, and dispatch to setPosition().

Specified by:

mousePressed in interface FigCanvasListener

Overrides:

mousePressed in class Command

setPosition

public void setPosition(java.awt.Point SP,
                        java.awt.Point WP)

this method should be called twice for a move command. At the first call, we expect the old position of the object to be moved, and on the second call its target position.

Overrides:

setPosition in class Command

toString

public java.lang.String toString()

toString(): identify this MoveCommand

Overrides:

toString in class Command

getDescription

public java.lang.String getDescription()

Overrides:

getDescription in class Command