de.jaret.util.ui.timebars.addon
Class ViewstateSaver

java.lang.Object
  de.jaret.util.ui.timebars.addon.ViewstateSaver

All Implemented Interfaces:

IViewstateSaver

public class ViewstateSaver
extends java.lang.Object
implements IViewstateSaver

Implementation of the viewstate saver for a timebarviewer. Saves and restores

• Expanded state for hierarchical models
• vertical scroll position
• start date

Version:

$Id: ViewstateSaver.java 664 2007-12-10 21:40:08Z kliem $

Author:

kliem

Constructor Summary

ViewstateSaver()

Method Summary

static ViewstateSaver	getInstance() The ViewStateSaver can be used as a singleton.
void	restoreViewstate(de.jaret.util.ui.timebars.swt.TimeBarViewer timeBarViewer, IHierarchyIdService idService, java.lang.String id, org.eclipse.ui.IMemento memento) Restore the viewstate.
void	saveViewstate(de.jaret.util.ui.timebars.swt.TimeBarViewer timeBarViewer, IHierarchyIdService idService, java.lang.String id, org.eclipse.ui.IMemento memento) Save the viewstate.

Methods inherited from class java.lang.Object

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

Constructor Detail

ViewstateSaver

public ViewstateSaver()

Method Detail

getInstance

public static ViewstateSaver getInstance()

The ViewStateSaver can be used as a singleton.

Returns:

instance

restoreViewstate

public void restoreViewstate(de.jaret.util.ui.timebars.swt.TimeBarViewer timeBarViewer,
                             IHierarchyIdService idService,
                             java.lang.String id,
                             org.eclipse.ui.IMemento memento)

Restore the viewstate. Will not fail if no state can be found in the memento.

Specified by:

restoreViewstate in interface IViewstateSaver

Parameters:

timeBarViewer - viewer to restore state of

idService - HierarchyIdService needed when handling hierarchical models. May be null when dealing with a flat model

id - id of a child memento to read from. May be null.

memento - memento to read from

saveViewstate

public void saveViewstate(de.jaret.util.ui.timebars.swt.TimeBarViewer timeBarViewer,
                          IHierarchyIdService idService,
                          java.lang.String id,
                          org.eclipse.ui.IMemento memento)

Save the viewstate. Previously saved state will be overwritten.

Specified by:

saveViewstate in interface IViewstateSaver

Parameters:

timeBarViewer - viewer to save state of

idService - HierarchyIdService needed when handling hierarchical models. May be null when dealing with a flat model

id - id used to create a child memento when not null

memento - memento to write to