Bug 130495 Get rid of SessionHandleAdapter
Now, we use SessionHandleAdapter to keep current active report deisng. That's a bad practive for editor swith and rebuild will cuase lots of problmes. Need find way to replace it.
UI/org.eclipse.birt.report.designer.ui.editors/src/org/eclipse/birt/report/designer/ui/editors/MultiPageReportEditor.java
if ( !prePageChanges( oldPage, newPage ) )
			{
				super.setActivePage( oldPageIndex );
			}
		}
		else
		{
			super.pageChange( newPageIndex );
		}
		updateRelatedViews( );
		bingdingKey( newPageIndex );
	}
	
	
	
	
	private void bingdingKey( int newPageIndex )
	{
		final IKeyBindingService service = getSite( ).getKeyBindingService( );
		final IEditorPart editor = (IEditorPart) pages.get( newPageIndex );
		if ( editor != null && editor.getEditorSite( )!=null)
		{
			editor.setFocus( );
			
			if ( service instanceof INestableKeyBindingService )
			{
				final INestableKeyBindingService nestableService = (INestableKeyBindingService) service;
				if ( editor != null )
				{
					nestableService.activateKeyBindingService( editor.getEditorSite( ) );