com.mxgraph.swing.handler

Class mxConnectionHandler

java.lang.Object

com.mxgraph.swing.util.mxMouseAdapter

com.mxgraph.swing.handler.mxConnectionHandler

All Implemented Interfaces:

java.awt.event.MouseListener, java.awt.event.MouseMotionListener, java.util.EventListener

public class mxConnectionHandler
extends mxMouseAdapter

Connection handler creates new connections between cells. This control is used to display the connector icon, while the preview is used to draw the line. mxEvent.CONNECT fires between begin- and endUpdate in mouseReleased. The cell property contains the inserted edge, the event and target properties contain the respective arguments that were passed to mouseReleased.

Field Summary

Fields

Modifier and Type	Field and Description
static java.awt.Cursor	CONNECT_CURSOR

Constructor Summary

Constructors

Constructor and Description
mxConnectionHandler(mxGraphComponent graphComponent)

Method Summary

Modifier and Type	Method and Description
void	addListener(java.lang.String eventName, mxEventSource.mxIEventListener listener) Adds the given event listener.
java.lang.Object	createTargetVertex(java.awt.event.MouseEvent e, java.lang.Object source)
javax.swing.ImageIcon	getConnecIcon()
mxConnectPreview	getConnectPreview()
int	getHandleSize()
mxCellMarker	getMarker()
boolean	isActive()
boolean	isConnecting() Returns true if the source terminal has been clicked and a new connection is currently being previewed.
boolean	isCreateTarget()
boolean	isEnabled()
boolean	isHandleEnabled()
boolean	isHighlighting() Returns true if no connectIcon is specified and handleEnabled is false.
boolean	isKeepOnTop()
boolean	isSelect()
boolean	isValidSource(java.lang.Object cell)
boolean	isValidTarget(java.lang.Object cell) Returns true.
void	mouseDragged(java.awt.event.MouseEvent e)
void	mouseMoved(java.awt.event.MouseEvent e)
void	mousePressed(java.awt.event.MouseEvent e)
void	mouseReleased(java.awt.event.MouseEvent e)
void	paint(java.awt.Graphics g)
void	removeListener(mxEventSource.mxIEventListener listener) Removes the given event listener.
void	removeListener(mxEventSource.mxIEventListener listener, java.lang.String eventName) Removes the given event listener for the specified event name.
void	reset()
void	setBounds(java.awt.Rectangle value)
void	setConnectIcon(javax.swing.ImageIcon value)
void	setConnectPreview(mxConnectPreview value)
void	setCreateTarget(boolean value)
void	setEnabled(boolean value)
void	setHandleEnabled(boolean value)
void	setHandleSize(int value)
void	setKeepOnTop(boolean value)
void	setMarker(mxCellMarker value)
void	setSelect(boolean value)
void	start(java.awt.event.MouseEvent e, mxCellState state)
java.lang.String	validateConnection(java.lang.Object source, java.lang.Object target) Returns the error message or an empty string if the connection for the given source target pair is not valid.

Methods inherited from class com.mxgraph.swing.util.mxMouseAdapter

mouseClicked, mouseEntered, mouseExited

Methods inherited from class java.lang.Object

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

Field Detail

CONNECT_CURSOR

public static java.awt.Cursor CONNECT_CURSOR

Constructor Detail

mxConnectionHandler

public mxConnectionHandler(mxGraphComponent graphComponent)

Parameters:

graphComponent -

Method Detail

getConnectPreview

public mxConnectPreview getConnectPreview()

setConnectPreview

public void setConnectPreview(mxConnectPreview value)

isConnecting

public boolean isConnecting()

Returns true if the source terminal has been clicked and a new connection is currently being previewed.

isActive

public boolean isActive()

isHighlighting

public boolean isHighlighting()

Returns true if no connectIcon is specified and handleEnabled is false.

isEnabled

public boolean isEnabled()

setEnabled

public void setEnabled(boolean value)

isKeepOnTop

public boolean isKeepOnTop()

setKeepOnTop

public void setKeepOnTop(boolean value)

setConnectIcon

public void setConnectIcon(javax.swing.ImageIcon value)

getConnecIcon

public javax.swing.ImageIcon getConnecIcon()

setHandleEnabled

public void setHandleEnabled(boolean value)

isHandleEnabled

public boolean isHandleEnabled()

setHandleSize

public void setHandleSize(int value)

getHandleSize

public int getHandleSize()

getMarker

public mxCellMarker getMarker()

setMarker

public void setMarker(mxCellMarker value)

setCreateTarget

public void setCreateTarget(boolean value)

isCreateTarget

public boolean isCreateTarget()

setSelect

public void setSelect(boolean value)

isSelect

public boolean isSelect()

reset

public void reset()

createTargetVertex

public java.lang.Object createTargetVertex(java.awt.event.MouseEvent e,
                                           java.lang.Object source)

isValidSource

public boolean isValidSource(java.lang.Object cell)

isValidTarget

public boolean isValidTarget(java.lang.Object cell)

Returns true. The call to mxGraph.isValidTarget is implicit by calling mxGraph.getEdgeValidationError in validateConnection. This is an additional hook for disabling certain targets in this specific handler.

validateConnection

public java.lang.String validateConnection(java.lang.Object source,
                                           java.lang.Object target)

Returns the error message or an empty string if the connection for the given source target pair is not valid. Otherwise it returns null.

mousePressed

public void mousePressed(java.awt.event.MouseEvent e)

Specified by:

mousePressed in interface java.awt.event.MouseListener

Overrides:

mousePressed in class mxMouseAdapter

start

public void start(java.awt.event.MouseEvent e,
                  mxCellState state)

mouseMoved

public void mouseMoved(java.awt.event.MouseEvent e)

Specified by:

mouseMoved in interface java.awt.event.MouseMotionListener

Overrides:

mouseMoved in class mxMouseAdapter

mouseDragged

public void mouseDragged(java.awt.event.MouseEvent e)

Specified by:

mouseDragged in interface java.awt.event.MouseMotionListener

Overrides:

mouseDragged in class mxMouseAdapter

mouseReleased

public void mouseReleased(java.awt.event.MouseEvent e)

Specified by:

mouseReleased in interface java.awt.event.MouseListener

Overrides:

mouseReleased in class mxMouseAdapter

setBounds

public void setBounds(java.awt.Rectangle value)

addListener

public void addListener(java.lang.String eventName,
                        mxEventSource.mxIEventListener listener)

Adds the given event listener.

removeListener

public void removeListener(mxEventSource.mxIEventListener listener)

Removes the given event listener.

removeListener

public void removeListener(mxEventSource.mxIEventListener listener,
                           java.lang.String eventName)

Removes the given event listener for the specified event name.

paint

public void paint(java.awt.Graphics g)