org.jgraph.graph
Class EdgeView.EdgeHandle

java.lang.Object
  org.jgraph.graph.EdgeView.EdgeHandle

All Implemented Interfaces:

CellHandle, Serializable

Enclosing class:

EdgeView

public static class EdgeView.EdgeHandle

extends Object

implements CellHandle, Serializable

See Also:

Serialized Form

Field Summary

protected int	currentIndex Holds the index of the current (editing) label or point.
protected int	currentLabel Holds the index of the current (editing) label or point.
protected Point2D	currentPoint
protected EdgeView	edge
protected boolean	edgeModified Indicates whether the edge has been modified during the last mouse pressed and dragged operations.
protected boolean	editing True if the cell is being edited.
protected Rectangle2D[]	extraLabelLocations
protected boolean	firstOverlayCall
protected JGraph	graph
protected Point2D	initialLabelLocation Holds the initial location of the label.
protected boolean	isEdgeConnectable
protected boolean	label
protected Rectangle2D	loc
protected EdgeView	orig
protected Rectangle2D[]	r
protected EdgeView	relevantEdge
protected boolean	source
protected boolean	target

Constructor Summary

EdgeView.EdgeHandle(EdgeView edge, GraphContext ctx)

Method Summary

protected ConnectionSet	createConnectionSet(EdgeView view, boolean verbose)
protected Point2D	getRelativeLabelPosition(EdgeView edge, Point2D p)
protected void	invalidate()
boolean	isAddPointEvent(MouseEvent event) Returning true signifies a mouse event adds a new point to an edge.
boolean	isConstrainedMoveEvent(MouseEvent e)
protected boolean	isEditing()
boolean	isRemovePointEvent(MouseEvent event) Returning true signifies a mouse event removes a given point.
protected boolean	isSourceEditing()
protected boolean	isTargetEditing()
void	mouseDragged(MouseEvent event) Messaged when the user drags the selection.
void	mouseMoved(MouseEvent event) Invoked when the mouse pointer has been moved on a component (with no buttons down).
void	mousePressed(MouseEvent event) Messaged when a mouse button is pressed.
void	mouseReleased(MouseEvent e) Messaged when the drag operation has terminated with a drop.
void	overlay(Graphics g) Paint the handle on the given graphics object during mouse operations.
void	paint(Graphics g) Paint the handle on the given graphics object once.
protected void	paintPort(Graphics g, CellView p)
protected void	processNestedMap(Map nested, boolean clone)
protected void	reloadPoints(EdgeView edge)
protected boolean	snap(boolean source, Point2D point)

Methods inherited from class java.lang.Object

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

Field Detail

graph

protected JGraph graph

edge

protected EdgeView edge

orig

protected EdgeView orig

label

protected boolean label

source

protected boolean source

target

protected boolean target

currentLabel

protected int currentLabel

Holds the index of the current (editing) label or point.

currentIndex

protected int currentIndex

Holds the index of the current (editing) label or point.

currentPoint

protected Point2D currentPoint

r

protected transient Rectangle2D[] r

loc

protected transient Rectangle2D loc

extraLabelLocations

protected transient Rectangle2D[] extraLabelLocations

firstOverlayCall

protected boolean firstOverlayCall

isEdgeConnectable

protected boolean isEdgeConnectable

relevantEdge

protected EdgeView relevantEdge

editing

protected boolean editing

True if the cell is being edited.

initialLabelLocation

protected Point2D initialLabelLocation

Holds the initial location of the label.

edgeModified

protected boolean edgeModified

Indicates whether the edge has been modified during the last mouse pressed and dragged operations.

Constructor Detail

EdgeView.EdgeHandle

public EdgeView.EdgeHandle(EdgeView edge,
                           GraphContext ctx)

Method Detail

reloadPoints

protected void reloadPoints(EdgeView edge)

paint

public void paint(Graphics g)

Description copied from interface: CellHandle

Paint the handle on the given graphics object once.

Specified by:

paint in interface CellHandle

Parameters:

g - the graphics object to paint the handle on

overlay

public void overlay(Graphics g)

Description copied from interface: CellHandle

Paint the handle on the given graphics object during mouse operations.

Specified by:

overlay in interface CellHandle

Parameters:

g - the graphics object to paint the handle on

paintPort

protected void paintPort(Graphics g,
                         CellView p)

snap

protected boolean snap(boolean source,
                       Point2D point)

isConstrainedMoveEvent

public boolean isConstrainedMoveEvent(MouseEvent e)

isAddPointEvent

public boolean isAddPointEvent(MouseEvent event)

Returning true signifies a mouse event adds a new point to an edge.

isRemovePointEvent

public boolean isRemovePointEvent(MouseEvent event)

Returning true signifies a mouse event removes a given point.

isSourceEditing

protected boolean isSourceEditing()

isTargetEditing

protected boolean isTargetEditing()

isEditing

protected boolean isEditing()

mouseMoved

public void mouseMoved(MouseEvent event)

Invoked when the mouse pointer has been moved on a component (with no buttons down).

Specified by:

mouseMoved in interface CellHandle

Parameters:

event - the mouse event to be processed

mousePressed

public void mousePressed(MouseEvent event)

Description copied from interface: CellHandle

Messaged when a mouse button is pressed.

Specified by:

mousePressed in interface CellHandle

Parameters:

event - the mouse event to be processed

mouseDragged

public void mouseDragged(MouseEvent event)

Description copied from interface: CellHandle

Messaged when the user drags the selection. The Controller is responsible to determine whether the mouse is inside the parent graph or not.

Specified by:

mouseDragged in interface CellHandle

Parameters:

event - the drag event to be processed

getRelativeLabelPosition

protected Point2D getRelativeLabelPosition(EdgeView edge,
                                           Point2D p)

mouseReleased

public void mouseReleased(MouseEvent e)

Description copied from interface: CellHandle

Messaged when the drag operation has terminated with a drop.

Specified by:

mouseReleased in interface CellHandle

Parameters:

e - the drop event to be processed

processNestedMap

protected void processNestedMap(Map nested,
                                boolean clone)

createConnectionSet

protected ConnectionSet createConnectionSet(EdgeView view,
                                            boolean verbose)

invalidate

protected void invalidate()