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
if ( page != null )
		{
			pageChange( page.getIndex( ) );
		}
	}
	protected void pageChange( int newPageIndex )
	{
		int oldPageIndex = getCurrentPage( );
		if ( oldPageIndex == newPageIndex )
		{
			return;
		}
		if ( oldPageIndex != -1 )
		{
			Object oldPage = pages.get( oldPageIndex );
			Object newPage = pages.get( newPageIndex );
			
			
			super.pageChange( newPageIndex );
			updateRelatedViews( );
			
			if ( !prePageChanges( oldPage, newPage ) )
			{
				super.setActivePage( oldPageIndex );
				updateRelatedViews( );
				return;
			}
		}
		else
		{