org.globus.cog.gui.grapheditor.nodes
Class AbstractNodeComponent

java.lang.Object
  org.globus.cog.gui.grapheditor.AbstractGraphComponent
      org.globus.cog.gui.grapheditor.nodes.AbstractNodeComponent

All Implemented Interfaces:

Cloneable, GraphComponent, NodeComponent, PropertyHolder

Direct Known Subclasses:

EditableNodeComponent

public abstract class AbstractNodeComponent
extends AbstractGraphComponent
implements NodeComponent, PropertyHolder

Implements the basic functionality for a node component

Constructor Summary

AbstractNodeComponent()

Method Summary

boolean	acceptsInEdgeConnection(EdgeComponent edge) Determines if a specific edge can be connected to this node
boolean	acceptsOutEdgeConnection(EdgeComponent edge) Determines if a specific edge can be connected to this node
GraphCanvas	createCanvas()
GraphCanvas	getCanvas() Returns a canvas for this node, if it is supported.
Class	getCanvasType()
boolean	isResizable()
void	setCanvas(GraphCanvas canvas)
void	setCanvasType(Class canvasType)
void	setResizable(boolean resizable)

Methods inherited from class org.globus.cog.gui.grapheditor.AbstractGraphComponent

addClassProperty, addProperty, addPropertyChangeListener, clone, firePropertyChange, firePropertyChange, firePropertyChange, get_ID, getClassProperties, getClassProperty, getClassProperty2, getComponentType, getParent, getProperties, getProperty, getProperty2, getPropertyValue, getRootNode, hasClassProperty, hasClassProperty, hasProperty, newInstance, newRenderer, newRenderer, removeProperty, removeProperty, removePropertyChangeListener, set_ID, setClassRendererClass, setClassRendererClass, setClassRendererClass, setClassRendererClass, setComponentType, setInstanceRendererClass, setInstanceRendererClass, setParent, setPropertyValue, supportsType

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.globus.cog.gui.grapheditor.GraphComponent

clone, get_ID, getComponentType, getParent, getRootNode, newInstance, newRenderer, newRenderer, set_ID, setComponentType, setParent, supportsType

Methods inherited from interface org.globus.cog.gui.grapheditor.properties.PropertyHolder

addProperty, addPropertyChangeListener, firePropertyChange, firePropertyChange, firePropertyChange, getProperties, getProperty, getPropertyValue, hasProperty, removeProperty, removePropertyChangeListener, setPropertyValue

Constructor Detail

AbstractNodeComponent

public AbstractNodeComponent()

Method Detail

getCanvas

public GraphCanvas getCanvas()

Returns a canvas for this node, if it is supported. If a canvas has not already been defined for this node, the getCanvasType() method is called, and a new canvas is instantiated. This form of lazy creation is used in order to allow generic nodes that can be generated recursively, without entering an infinite loop at initialization.

Specified by:

getCanvas in interface NodeComponent

Returns:

An existing canvas, a new canvas, or null if the node does not support a canvas.

createCanvas

public GraphCanvas createCanvas()

Specified by:

createCanvas in interface NodeComponent

setCanvas

public void setCanvas(GraphCanvas canvas)

acceptsInEdgeConnection

public boolean acceptsInEdgeConnection(EdgeComponent edge)

Description copied from interface: NodeComponent

Determines if a specific edge can be connected to this node

Specified by:

acceptsInEdgeConnection in interface NodeComponent

Returns:

acceptsOutEdgeConnection

public boolean acceptsOutEdgeConnection(EdgeComponent edge)

Description copied from interface: NodeComponent

Determines if a specific edge can be connected to this node

Specified by:

acceptsOutEdgeConnection in interface NodeComponent

Returns:

getCanvasType

public Class getCanvasType()

setCanvasType

public void setCanvasType(Class canvasType)

setResizable

public void setResizable(boolean resizable)

isResizable

public boolean isResizable()

Specified by:

isResizable in interface NodeComponent