net.frapu.code.visualization

Class AttachedNodeHandler

java.lang.Object

net.frapu.code.visualization.AttachedNodeHandler

Direct Known Subclasses:

AttachedIntermediateEventHandler

public abstract class AttachedNodeHandler
extends java.lang.Object

This class provides an handler for the ProcessEditor to support AttachedNodes.

Field Summary

Fields

Modifier and Type	Field and Description
static int	RESIZE_EAST
static int	RESIZE_NORTH
static int	RESIZE_SOUTH
static int	RESIZE_WEST

Constructor Summary

Constructors

Constructor and Description
AttachedNodeHandler()

Method Summary

Modifier and Type	Method and Description
void	attach(ProcessNode source, AttachedNode target) Attaches the target AttachedNode to the source ProcessNode.
void	detach(AttachedNode target) Detaches the target AttachedNode from any source ProcessNode.
abstract boolean	isAttachable(ProcessNode source, AttachedNode target) Returns true if the target ProcessNode can be attached to the source ProcessNode at their current positions.
void	sourceMoved(ProcessNode source, java.util.List<AttachedNode> attachedNodes, int xDiff, int yDiff) Is called each time the source ProcessNode is moved.
void	sourceResized(ProcessNode oldSource, ProcessNode newSource, java.util.List<AttachedNode> attachedNodes, int direction) Is called each time the source ProcessNode is resized.

Methods inherited from class java.lang.Object

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

Field Detail

RESIZE_NORTH

public static final int RESIZE_NORTH

See Also:

Constant Field Values

RESIZE_SOUTH

public static final int RESIZE_SOUTH

See Also:

Constant Field Values

RESIZE_EAST

public static final int RESIZE_EAST

See Also:

Constant Field Values

RESIZE_WEST

public static final int RESIZE_WEST

See Also:

Constant Field Values

Constructor Detail

AttachedNodeHandler

public AttachedNodeHandler()

Method Detail

isAttachable

public abstract boolean isAttachable(ProcessNode source,
                                     AttachedNode target)

Returns true if the target ProcessNode can be attached to the source ProcessNode at their current positions.

Parameters:

source -

target -

Returns:

attach

public void attach(ProcessNode source,
                   AttachedNode target)

Attaches the target AttachedNode to the source ProcessNode. Might be overwritten by subclasses to refine the attachement.

Parameters:

source -

target -

detach

public void detach(AttachedNode target)

Detaches the target AttachedNode from any source ProcessNode.

Parameters:

target -

sourceMoved

public void sourceMoved(ProcessNode source,
                        java.util.List<AttachedNode> attachedNodes,
                        int xDiff,
                        int yDiff)

Is called each time the source ProcessNode is moved. Subclasses might also move the AttachedNodes.

Parameters:

source - - can be used by subclasses

sourceResized

public void sourceResized(ProcessNode oldSource,
                          ProcessNode newSource,
                          java.util.List<AttachedNode> attachedNodes,
                          int direction)

Is called each time the source ProcessNode is resized. Subclasses might also resize/move the AttachedNodes.

Parameters:

oldSource -

newSource -

attachedNodes -

direction - One of RESIZE_{NORTH,SOUTH,EAST,WEST}