org.jgraph.graph

Class DefaultGraphCell

java.lang.Object

javax.swing.tree.DefaultMutableTreeNode

org.jgraph.graph.DefaultGraphCell

All Implemented Interfaces:

java.io.Serializable, java.lang.Cloneable, javax.swing.tree.MutableTreeNode, javax.swing.tree.TreeNode, GraphCell

Direct Known Subclasses:

DefaultEdge, DefaultPort

public class DefaultGraphCell
extends javax.swing.tree.DefaultMutableTreeNode
implements GraphCell, java.lang.Cloneable

The default implementation for the GraphCell interface.

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
protected AttributeMap	attributes Hashtable for properties.

Fields inherited from class javax.swing.tree.DefaultMutableTreeNode

allowsChildren, children, EMPTY_ENUMERATION, parent, userObject

Constructor Summary

Constructors

Constructor and Description
DefaultGraphCell() Creates an empty cell.
DefaultGraphCell(java.lang.Object userObject) Creates a graph cell and initializes it with the specified user object.
DefaultGraphCell(java.lang.Object userObject, AttributeMap storageMap) Constructs a cell that holds a reference to the specified user object and contains the specified array of children and sets default values for the bounds attribute.
DefaultGraphCell(java.lang.Object userObject, AttributeMap storageMap, javax.swing.tree.MutableTreeNode[] children) Creates a graph cell and initializes it with the specified user object.

Method Summary

Methods

Modifier and Type	Method and Description
java.lang.Object	addPort() Utility method to create a port for this cell.
java.lang.Object	addPort(java.awt.geom.Point2D offset) Utility method to create a port for this cell.
java.lang.Object	addPort(java.awt.geom.Point2D offset, java.lang.Object userObject) Utility method to create a port for this cell.
java.util.Map	changeAttributes(java.util.Map change) Deprecated. Use getAttributes().applyMap
java.lang.Object	clone() Create a clone of the cell.
AttributeMap	getAttributes() Returns the properies of the cell.
java.util.List	getChildren() Provides access to the children list to change ordering.
void	setAttributes(AttributeMap attributes) Sets the attributes.

Methods inherited from class javax.swing.tree.DefaultMutableTreeNode

add, breadthFirstEnumeration, children, depthFirstEnumeration, getAllowsChildren, getChildAfter, getChildAt, getChildBefore, getChildCount, getDepth, getFirstChild, getFirstLeaf, getIndex, getLastChild, getLastLeaf, getLeafCount, getLevel, getNextLeaf, getNextNode, getNextSibling, getParent, getPath, getPathToRoot, getPreviousLeaf, getPreviousNode, getPreviousSibling, getRoot, getSharedAncestor, getSiblingCount, getUserObject, getUserObjectPath, insert, isLeaf, isNodeAncestor, isNodeChild, isNodeDescendant, isNodeRelated, isNodeSibling, isRoot, pathFromAncestorEnumeration, postorderEnumeration, preorderEnumeration, remove, remove, removeAllChildren, removeFromParent, setAllowsChildren, setParent, setUserObject, toString

Methods inherited from class java.lang.Object

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

Field Detail

attributes

protected AttributeMap attributes

Hashtable for properties. Initially empty

Constructor Detail

DefaultGraphCell

public DefaultGraphCell()

Creates an empty cell.

DefaultGraphCell

public DefaultGraphCell(java.lang.Object userObject)

Creates a graph cell and initializes it with the specified user object.

Parameters:

userObject - an Object provided by the user that constitutes the cell's data

DefaultGraphCell

public DefaultGraphCell(java.lang.Object userObject,
                AttributeMap storageMap)

Constructs a cell that holds a reference to the specified user object and contains the specified array of children and sets default values for the bounds attribute.

Parameters:

userObject - reference to the user object

storageMap - the storage attribute map for this cell

DefaultGraphCell

public DefaultGraphCell(java.lang.Object userObject,
                AttributeMap storageMap,
                javax.swing.tree.MutableTreeNode[] children)

Creates a graph cell and initializes it with the specified user object. The GraphCell allows children only if specified.

Parameters:

userObject - an Object provided by the user that constitutes the cell's data

storageMap - the storage attribute map for this cell

children - array of children

Method Detail

getChildren

public java.util.List getChildren()

Provides access to the children list to change ordering. This method returns a Collections.EMPTY_LIST if the list of childrenpoints to null.

getAttributes

public AttributeMap getAttributes()

Returns the properies of the cell.

Specified by:

getAttributes in interface GraphCell

changeAttributes

public java.util.Map changeAttributes(java.util.Map change)

Deprecated. Use getAttributes().applyMap

Changes the attributes of the cell.

Specified by:

changeAttributes in interface GraphCell

setAttributes

public void setAttributes(AttributeMap attributes)

Sets the attributes.

Specified by:

setAttributes in interface GraphCell

Parameters:

attributes - The attributes to set

addPort

public java.lang.Object addPort()

Utility method to create a port for this cell. This method adds a floating port.

Returns:

the port created

addPort

public java.lang.Object addPort(java.awt.geom.Point2D offset)

Utility method to create a port for this cell. The method adds a port at a fixed relative offset within the cell. If the offset is null then a floating port is added.

Parameters:

offset - the offset of the port within the cell

Returns:

the port created

addPort

public java.lang.Object addPort(java.awt.geom.Point2D offset,
                       java.lang.Object userObject)

Utility method to create a port for this cell. The method adds a port at a fixed relative offset within the cell. If the offset is null then a floating port is added.

Parameters:

offset - the offset of the port within the cell

userObject - the user object of the port cell

Returns:

the port created

clone

public java.lang.Object clone()

Create a clone of the cell. This method uses the superclass implementation (which does not clone the children), then uses clone on the attribute map. This method does not clone the user object. You should override the cloneUserObject in the graph model to implement cloning of custom user objects.

Overrides:

clone in class javax.swing.tree.DefaultMutableTreeNode

Returns:

Object a clone of this object.