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
super( );
	}
	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.ui.forms.editor.FormEditor#init(org.eclipse.ui.IEditorSite,
	 *      org.eclipse.ui.IEditorInput)
	 */
	public void init( IEditorSite site, IEditorInput input )
			throws PartInitException
	{
		super.init( site, input );
		site.setSelectionProvider( new FormEditorSelectionProvider( this ) );
		IReportProvider provider = EditorUtil.getReportProvider( this, input );
		if ( provider != null && provider.getInputPath( input ) != null )
		{
			setPartName( provider.getInputPath( input ).lastSegment( ) );
		}
		else
		{
			setPartName( input.getName( ) );
		}
	}
	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.ui.forms.editor.FormEditor#addPages()
	 */
	protected void addPages( )
	{