com.tensegrity.gui.swing.graph
Class LayoutObserver

java.lang.Object
  com.tensegrity.gui.swing.graph.AbstractLayoutObserver
      com.tensegrity.gui.swing.graph.LayoutObserver

All Implemented Interfaces:

Observer

public class LayoutObserver

extends AbstractLayoutObserver

This class manages redrawing for layout animation. It is used by the GraphLayoutDialog and in other places where graph-layout is initiated.

Version:

$Id: LayoutObserver.java,v 1.24 2006/05/23 10:20:15 MichaelKegel Exp $

Author:

Stepan Rutz

Field Summary

Fields inherited from class com.tensegrity.gui.swing.graph.AbstractLayoutObserver

ADJUST_VIEWPORT_ACCORDING_TO_GRAPH, ADJUST_VIEWPORT_LEFTTOP, stepcounter, suppressFilling, suppressNavigatorAnimation, suppressText, suppressZoomToFit, updatesteps, viewportadjustment

Constructor Summary

LayoutObserver(GraphApplication graphapplication, NavigatorPanel navigatorpanel)
Constructs a layout observer instance associated with the given graphframe reference for managing repainting during layout animation.

LayoutObserver(GraphApplication graphapplication, NavigatorPanel navigatorpanel, int updatesteps)
Constructs a layout observer instance associated with the given graphframe reference for managing repainting during layout animation.

LayoutObserver(GraphApplication graphapplication, NavigatorPanel navigatorpanel, int updatesteps, int viewportadjustment)
Constructs a layout observer instance associated with the given graphframe reference for managing repainting during layout animation.

Method Summary

void	update(Observable observable, java.lang.Object arg) This callback is invoked if the layoutservice returned STATUS_PARTIAL.

Methods inherited from class com.tensegrity.gui.swing.graph.AbstractLayoutObserver

getSuppressFilling, getSuppressNavigatorAnimation, getSuppressText, getSuppressZoomToFit, prepare, setSuppressFilling, setSuppressNavigatorAnimation, setSuppressText, setSuppressZoomToFit, unprepare, updateVisualGraphView

Methods inherited from class java.lang.Object

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

Constructor Detail

LayoutObserver

public LayoutObserver(GraphApplication graphapplication,
                      NavigatorPanel navigatorpanel)

Constructs a layout observer instance associated with the given graphframe reference for managing repainting during layout animation.

Parameters:

graphapplication - reference to the application.

navigatorpanel - the panel holding the navigator (may be null).

LayoutObserver

public LayoutObserver(GraphApplication graphapplication,
                      NavigatorPanel navigatorpanel,
                      int updatesteps)

Constructs a layout observer instance associated with the given graphframe reference for managing repainting during layout animation.

Parameters:

graphapplication - reference to the application.

navigatorpanel - the panel holding the navigator (may be null).

updatesteps - repaint only every updatesteps.

LayoutObserver

public LayoutObserver(GraphApplication graphapplication,
                      NavigatorPanel navigatorpanel,
                      int updatesteps,
                      int viewportadjustment)

Constructs a layout observer instance associated with the given graphframe reference for managing repainting during layout animation.

Parameters:

graphapplication - reference to the application.

navigatorpanel - the panel holding the navigator (may be null).

updatesteps - repaint only every updatesteps.

viewportadjustment - constant that defines the view's viewport adjustment mode

Method Detail

update

public void update(Observable observable,
                   java.lang.Object arg)

This callback is invoked if the layoutservice returned STATUS_PARTIAL. It is used to repaint the graph

Parameters:

observable - the source of the call.

arg - additional information.