org.jgraph.graph
Class VertexView

java.lang.Object
  org.jgraph.graph.AbstractCellView
      org.jgraph.graph.VertexView

All Implemented Interfaces:

Serializable, CellView

public class VertexView
extends AbstractCellView

The default implementation of a vertex view.

Version:

1.0 1/1/02

Author:

Gaudenz Alder

See Also:

Serialized Form

Nested Class Summary

class

VertexView.SizeHandle

Field Summary

protected Rectangle	bounds Reference to the bounds attribute
protected Rectangle	groupBounds Cached bounds of all children if vertex is a group
static VertexRenderer	renderer Renderer for the class.

Fields inherited from class org.jgraph.graph.AbstractCellView

allAttributes, attributes, cell, cellEditor, childViews, graph, mapper, parent

Constructor Summary

VertexView(Object cell, JGraph graph, CellMapper mapper)
Constructs a vertex view for the specified model object and the specified child views.

Method Summary

void	childUpdated()
Rectangle	getBounds() Returns the cached bounds for the vertex.
Rectangle	getCachedBounds()
Point	getCenterPoint() Returns the center of this vertex.
CellHandle	getHandle(GraphContext context) Returns a cell handle for the view, if the graph and the view are sizeable.
Point	getPerimeterPoint(Point source, Point p) Returns the intersection of the bounding rectangle and the straight line between the source and the specified point p.
CellViewRenderer	getRenderer() Returns a renderer for the class.
boolean	isConstrainedSizeEvent(MouseEvent e)
void	setCachedBounds(Rectangle bounds)
void	update() Overrides the parent method to udpate the cached points.
protected void	updateGroupBounds()

Methods inherited from class org.jgraph.graph.AbstractCellView

getAllAttributes, getAttributes, getBounds, getCell, getChildViews, getDescendantViews, getEditor, getGraph, getMapper, getModel, getParentView, getRendererComponent, intersects, isLeaf, refresh, removeFromParent, scale, setAttributes, setBounds, translate, updateAllAttributes

Methods inherited from class java.lang.Object

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

Field Detail

renderer

public static VertexRenderer renderer

Renderer for the class.

bounds

protected Rectangle bounds

Reference to the bounds attribute

groupBounds

protected Rectangle groupBounds

Cached bounds of all children if vertex is a group

Constructor Detail

VertexView

public VertexView(Object cell,
                  JGraph graph,
                  CellMapper mapper)

Constructs a vertex view for the specified model object and the specified child views.

Parameters:

cell - reference to the model object

Method Detail

update

public void update()

Overrides the parent method to udpate the cached points.

Specified by:

update in interface CellView

Overrides:

update in class AbstractCellView

childUpdated

public void childUpdated()

Specified by:

childUpdated in interface CellView

Overrides:

childUpdated in class AbstractCellView

getBounds

public Rectangle getBounds()

Returns the cached bounds for the vertex.

Specified by:

getBounds in interface CellView

Specified by:

getBounds in class AbstractCellView

getCachedBounds

public Rectangle getCachedBounds()

setCachedBounds

public void setCachedBounds(Rectangle bounds)

updateGroupBounds

protected void updateGroupBounds()

getRenderer

public CellViewRenderer getRenderer()

Returns a renderer for the class.

Specified by:

getRenderer in class AbstractCellView

getHandle

public CellHandle getHandle(GraphContext context)

Returns a cell handle for the view, if the graph and the view are sizeable.

Specified by:

getHandle in interface CellView

Specified by:

getHandle in class AbstractCellView

getCenterPoint

public Point getCenterPoint()

Returns the center of this vertex.

getPerimeterPoint

public Point getPerimeterPoint(Point source,
                               Point p)

Returns the intersection of the bounding rectangle and the straight line between the source and the specified point p. The specified point is expected not to intersect the bounds. Note: You must override this method if you use a different renderer. This is because this method relies on the VertexRenderer interface, which can not be safely assumed for subclassers.

isConstrainedSizeEvent

public boolean isConstrainedSizeEvent(MouseEvent e)