hades.gui
Class CreateSignalCommand

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

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 CreateSignalCommand

extends Command

CreateSignalCommand - create and connect a Signal between SimObjects.

The command works as follows. If the user clicks on a SimObject's port, we create a new Signal and connect it to the corresponding port. Afterwards, we create a new intermediate Signal vertex on each mouse click, until the user clicks on another SimObject's port, which finishes this command. We won't allow to connect to a port already connected to another Signal, unless the user uses +click. In the latter case, the new and the existing Signals are merged. With +click it is also possible to start a Signal without a port connection on its first vertex.

See Also:

Serialized Form

Field Summary

(package private) ObjectCanvas	canvas
(package private) int	n_points
(package private) Port	port0
(package private) Port	port1
(package private) boolean	shiftDown
(package private) Signal	signal
(package private) java.awt.Point	startPoint
(package private) FigCompound	tmpCompound
(package private) Signal	victim
(package private) WireSegment	ws

Fields inherited from class hades.gui.Command

console, debug, editor, ready, versionString

Fields inherited from class java.util.EventObject

source

Constructor Summary

CreateSignalCommand(Editor editor)
The default constructor for a CreateSignalCommand in Editor 'editor'

Method Summary

void	cancel()
void	execute() perform the action corresponding to this CreateSignalCommand object and register it with the UndoStack.
java.lang.String	getDescription()
(package private) void	insertVertexAt(Signal signal, WireSegment originalSegment, java.awt.Point newVertex)
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 create-Signal command.
void	setShiftDown(boolean b) utility function to set the shiftDown variable read by setPosition().
java.lang.String	toString() toString(): identify this CreateSignalCommand
void	undo() try to undo the action corresponding to this CreateSignalCommand object: we simply delete the Signal again.

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

signal

Signal signal

victim

Signal victim

canvas

ObjectCanvas canvas

n_points

int n_points

ws

WireSegment ws

startPoint

java.awt.Point startPoint

port0

Port port0

port1

Port port1

tmpCompound

FigCompound tmpCompound

shiftDown

boolean shiftDown

Constructor Detail

CreateSignalCommand

public CreateSignalCommand(Editor editor)

The default constructor for a CreateSignalCommand in Editor 'editor'

Method Detail

execute

public void execute()

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

Overrides:

execute in class Command

undo

public void undo()

try to undo the action corresponding to this CreateSignalCommand object: we simply delete the Signal again.

Overrides:

undo in class Command

cancel

public void cancel()

Overrides:

cancel 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

setShiftDown

public void setShiftDown(boolean b)

utility function to set the shiftDown variable read by setPosition(). With shiftDown() set to true, it is possible to create a Signal unconnected at its first point.

setPosition

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

this method should be called twice for a create-Signal command.

Overrides:

setPosition in class Command

insertVertexAt

void insertVertexAt(Signal signal,
                    WireSegment originalSegment,
                    java.awt.Point newVertex)

toString

public java.lang.String toString()

toString(): identify this CreateSignalCommand

Overrides:

toString in class Command

getDescription

public java.lang.String getDescription()

Overrides:

getDescription in class Command