Bug 144590 [Accessibility] BIRT custom controls should support active accessibility
Description: BIRT custom controls should support active accessibility. There are some custom controls in BIRT GUI. In Eclipse, when implementing a custom control you should also implement some or all of (as they apply to your control) org.eclipse.swt.accessibility.AccessibleListener, org.eclipse.swt.accessibility.AccessibleControlListener and org.eclipse.swt.accessibility.AccessibleTextListener. Also, the custom control can notify Active Accessibility of changes within the control using org.eclipse.swt.accessibility.Accessible methods such as setFocus(), selectionChanged(), textCaretMoved(), textChanged() and textSelectionChanged().
UI/org.eclipse.birt.report.designer.ui.editors/src/org/eclipse/birt/report/designer/ui/editors/MultiPageReportEditor.java
public IEditorPart getEditorPart( )
	{
		return this;
	}
	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.birt.report.designer.internal.ui.editors.parts.GraphicalEditorWithFlyoutPalette#performRequest(org.eclipse.birt.report.designer.core.util.mediator.request.ReportRequest)
	 */
	public void performRequest( ReportRequest request )
	{
		if ( ReportRequest.OPEN_EDITOR.equals( request.getType( ) )
				&& ( request.getSelectionModelList( ).size( ) == 1 )
				&& request.getSelectionModelList( ).get( 0 ) instanceof MasterPageHandle )
		{
			handleOpenMasterPage( request );
			return;
		}
		
	}
	/**
	 * @param request
	 */
	protected void handleOpenMasterPage( final ReportRequest request )
	{
		if ( this.getContainer( ).isVisible( ) )
		{
			setActivePage( LayoutMasterPage_ID );
			Display.getCurrent( ).asyncExec( new Runnable( ) {
				public void run( )