org.jgraph.graph
Class AbstractCellView

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

All Implemented Interfaces:

Serializable, CellView

Direct Known Subclasses:

EdgeView, PortView, VertexView

public abstract class AbstractCellView
extends Object
implements CellView, Serializable

The abstract base class for all cell views.

Version:

1.0 1/3/02

Author:

Gaudenz Alder

See Also:

Serialized Form

Field Summary

protected Map	allAttributes
protected Map	attributes Hashtable for attributes.
protected Object	cell Reference to the cell for this view
protected static GraphCellEditor	cellEditor Editor for the cell.
protected List	childViews Cached child views.
protected JGraph	graph Reference to the graph
protected CellMapper	mapper Reference to the cell mapper for the view
protected CellView	parent Cached parent view

Constructor Summary

AbstractCellView(Object cell, JGraph graph, CellMapper mapper)
Constructs a view for the specified model object, and invokes update on the new instance.

Method Summary

void	childUpdated()
Map	getAllAttributes() Returns the attributes of the view combined with the attributes of the corresponding cell.
Map	getAttributes() Return the attributes of the view.
abstract Rectangle	getBounds() Returns the bounding rectangle for this view.
static Rectangle	getBounds(CellView[] views) Returns the bounding box for the specified views.
Object	getCell() Returns the model object that this view represents.
CellView[]	getChildViews() Returns the child views of this view.
static CellView[]	getDescendantViews(CellView[] views) Returns all views, including descendants that have a parent in views without the PortViews.
GraphCellEditor	getEditor() Returns a cell editor for the view.
JGraph	getGraph() Returns the graph associated with the view.
abstract CellHandle	getHandle(GraphContext context) Returns a cell handle for the view.
CellMapper	getMapper() Returns the cell mapper associated with the view.
GraphModel	getModel() Returns the model associated with the view.
CellView	getParentView() Returns the parent view for this view.
protected abstract CellViewRenderer	getRenderer()
Component	getRendererComponent(JGraph graph, boolean selected, boolean focus, boolean preview) Returns a renderer component, configured for the view.
boolean	intersects(Graphics g, Rectangle rect) Returns true if the view intersects the given rectangle.
boolean	isLeaf() Returns true if the view is a leaf.
void	refresh(boolean createDependentViews) Create child views and reload properties.
void	removeFromParent() Removes this view from the list of childs of the parent.
protected void	scale(double sx, double sy, Point origin) Scale view (group) by sx, sy.
Map	setAttributes(Map change) Applies change to the attributes of the view and calls update.
void	setBounds(Rectangle bounds) Sets the bounds of view.
protected void	translate(int dx, int dy) Translates view (group) by dx, dy.
void	update() Update attributes and recurse children.
protected void	updateAllAttributes() This method implements the merge between the cell's and the view's attributes.

Methods inherited from class java.lang.Object

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

Field Detail

cellEditor

protected static GraphCellEditor cellEditor

Editor for the cell.

graph

protected JGraph graph

Reference to the graph

mapper

protected CellMapper mapper

Reference to the cell mapper for the view

cell

protected Object cell

Reference to the cell for this view

parent

protected CellView parent

Cached parent view

childViews

protected List childViews

Cached child views.

attributes

protected Map attributes

Hashtable for attributes. Initially empty

allAttributes

protected Map allAttributes

Constructor Detail

AbstractCellView

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

Constructs a view for the specified model object, and invokes update on the new instance.

Parameters:

cell - reference to the model object

Method Detail

getGraph

public JGraph getGraph()

Returns the graph associated with the view.

getModel

public GraphModel getModel()

Returns the model associated with the view.

getMapper

public CellMapper getMapper()

Returns the cell mapper associated with the view.

getCell

public Object getCell()

Returns the model object that this view represents.

Specified by:

getCell in interface CellView

refresh

public void refresh(boolean createDependentViews)

Create child views and reload properties. Invokes update first.

Specified by:

refresh in interface CellView

update

public void update()

Update attributes and recurse children.

Specified by:

update in interface CellView

updateAllAttributes

protected void updateAllAttributes()

This method implements the merge between the cell's and the view's attributes. The view's attributes override the cell's attributes with one exception.

childUpdated

public void childUpdated()

Specified by:

childUpdated in interface CellView

getParentView

public CellView getParentView()

Returns the parent view for this view.

Specified by:

getParentView in interface CellView

getChildViews

public CellView[] getChildViews()

Returns the child views of this view.

Specified by:

getChildViews in interface CellView

getDescendantViews

public static CellView[] getDescendantViews(CellView[] views)

Returns all views, including descendants that have a parent in views without the PortViews. Note: Iterative Implementation using view.getChildViews

removeFromParent

public void removeFromParent()

Removes this view from the list of childs of the parent.

Specified by:

removeFromParent in interface CellView

isLeaf

public boolean isLeaf()

Returns true if the view is a leaf.

Specified by:

isLeaf in interface CellView

getAttributes

public Map getAttributes()

Return the attributes of the view.

Specified by:

getAttributes in interface CellView

getAllAttributes

public Map getAllAttributes()

Returns the attributes of the view combined with the attributes of the corresponding cell. The view's attributes override the cell's attributes with the same key.

Specified by:

getAllAttributes in interface CellView

setAttributes

public Map setAttributes(Map change)

Applies change to the attributes of the view and calls update.

Specified by:

setAttributes in interface CellView

getBounds

public abstract Rectangle getBounds()

Returns the bounding rectangle for this view.

Specified by:

getBounds in interface CellView

getBounds

public static Rectangle getBounds(CellView[] views)

Returns the bounding box for the specified views.

setBounds

public void setBounds(Rectangle bounds)

Sets the bounds of view. Calls translateView and scaleView.

translate

protected void translate(int dx,
                         int dy)

Translates view (group) by dx, dy.

scale

protected void scale(double sx,
                     double sy,
                     Point origin)

Scale view (group) by sx, sy.

intersects

public boolean intersects(Graphics g,
                          Rectangle rect)

Returns true if the view intersects the given rectangle.

Specified by:

intersects in interface CellView

getRendererComponent

public Component getRendererComponent(JGraph graph,
                                      boolean selected,
                                      boolean focus,
                                      boolean preview)

Returns a renderer component, configured for the view.

Specified by:

getRendererComponent in interface CellView

getRenderer

protected abstract CellViewRenderer getRenderer()

getHandle

public abstract CellHandle getHandle(GraphContext context)

Returns a cell handle for the view.

Specified by:

getHandle in interface CellView

getEditor

public GraphCellEditor getEditor()

Returns a cell editor for the view.

Specified by:

getEditor in interface CellView