CH.ifa.draw.standard
Class ChangeConnectionHandle

java.lang.Object
  CH.ifa.draw.standard.AbstractHandle
      CH.ifa.draw.standard.ChangeConnectionHandle

All Implemented Interfaces:

Handle

Direct Known Subclasses:

ChangeConnectionEndHandle, ChangeConnectionStartHandle

public abstract class ChangeConnectionHandle
extends AbstractHandle

ChangeConnectionHandle factors the common code for handles that can be used to reconnect connections.

See Also:

ChangeConnectionEndHandle, ChangeConnectionStartHandle

Field Summary

protected ConnectionFigure	fConnection
protected Connector	fOriginalTarget
protected java.awt.Point	fStart
protected Figure	fTarget

Fields inherited from class CH.ifa.draw.standard.AbstractHandle

HANDLESIZE

Constructor Summary

protected

ChangeConnectionHandle(Figure owner) Initializes the change connection handle.

Method Summary

protected abstract void	connect(Connector c) Connect the connection with the given figure.
protected abstract void	disconnect() Disconnects the connection.
void	draw(java.awt.Graphics g) Draws this handle.
protected Connector	findConnector(int x, int y, Figure f)
void	invokeEnd(int x, int y, int anchorX, int anchorY, DrawingView view) Connects the figure to the new target.
void	invokeStart(int x, int y, DrawingView view) Disconnects the connection.
void	invokeStep(int x, int y, int anchorX, int anchorY, DrawingView view) Finds a new target of the connection.
protected abstract void	setPoint(int x, int y) Sets the location of the target point.
protected Connector	source() Gets the side of the connection that is unaffected by the change.
protected abstract Connector	target() Returns the target connector of the change.

Methods inherited from class CH.ifa.draw.standard.AbstractHandle

containsPoint, displayBox, invokeEnd, invokeStart, invokeStep, locate, owner

Methods inherited from class java.lang.Object

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

Field Detail

fOriginalTarget

protected Connector fOriginalTarget

fTarget

protected Figure fTarget

fConnection

protected ConnectionFigure fConnection

fStart

protected java.awt.Point fStart

Constructor Detail

ChangeConnectionHandle

protected ChangeConnectionHandle(Figure owner)

Initializes the change connection handle.

Method Detail

target

protected abstract Connector target()

Returns the target connector of the change.

disconnect

protected abstract void disconnect()

Disconnects the connection.

connect

protected abstract void connect(Connector c)

Connect the connection with the given figure.

setPoint

protected abstract void setPoint(int x,
                                 int y)

Sets the location of the target point.

source

protected Connector source()

Gets the side of the connection that is unaffected by the change.

invokeStart

public void invokeStart(int x,
                        int y,
                        DrawingView view)

Disconnects the connection.

Specified by:

invokeStart in interface Handle

Overrides:

invokeStart in class AbstractHandle

Parameters:

x - the x position where the interaction started

y - the y position where the interaction started

view - the handles container

invokeStep

public void invokeStep(int x,
                       int y,
                       int anchorX,
                       int anchorY,
                       DrawingView view)

Finds a new target of the connection.

Specified by:

invokeStep in interface Handle

Overrides:

invokeStep in class AbstractHandle

Parameters:

x - the current x position

y - the current y position

anchorX - the x position where the interaction started

anchorY - the y position where the interaction started

invokeEnd

public void invokeEnd(int x,
                      int y,
                      int anchorX,
                      int anchorY,
                      DrawingView view)

Connects the figure to the new target. If there is no new target the connection reverts to its original one.

Specified by:

invokeEnd in interface Handle

Overrides:

invokeEnd in class AbstractHandle

Parameters:

x - the current x position

y - the current y position

anchorX - the x position where the interaction started

anchorY - the y position where the interaction started

findConnector

protected Connector findConnector(int x,
                                  int y,
                                  Figure f)

draw

public void draw(java.awt.Graphics g)

Draws this handle.

Specified by:

draw in interface Handle

Overrides:

draw in class AbstractHandle