ilog.views.diagrammer.application
Class IlvDiagrammerHashFunction

java.lang.Object
  ilog.views.diagrammer.application.IlvDiagrammerHashFunction

public class IlvDiagrammerHashFunction
extends Object

This class is used to determine which nodes of the diagram are considered "equal" for Diagrammer application components.

For example, the IlvDiagrammerTree uses the same icon for tree items that represent nodes or links for which the hash function returns the same code.

The default icon key returns the tag of the object (IlvSDMModel.getTag(java.lang.Object)) concatenated with all its CSS classes (that is, the value of the "CSSclass" property). So, for example, all objects that have the same tag and CSS classes will be displayed with the same icon in the tree.

See Also:

IlvDiagrammerTree.setIconHashFunction(ilog.views.diagrammer.application.IlvDiagrammerHashFunction), IlvDiagrammerTree.getIconHashFunction(), IlvDiagrammerPaletteBar.setAutomatic(boolean)

Constructor Summary

IlvDiagrammerHashFunction()

Method Summary

Object

hashCode(IlvDiagrammer diagrammer, Object obj) Returns the hash code for a node or a link in a diagram component.

Methods inherited from class java.lang.Object

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

Constructor Detail

IlvDiagrammerHashFunction

public IlvDiagrammerHashFunction()

Method Detail

hashCode

public Object hashCode(IlvDiagrammer diagrammer,
                       Object obj)

Returns the hash code for a node or a link in a diagram component. Two nodes or links will be considered equivalent by Diagrammer application components (for example the tree or the palette bar) if the hash codes returned by this method are equal (in terms of the Object.equals method).

Parameters:

diagrammer - The diagram component that contains the object.

obj - The node or link for which the hash code is requested.