Bug 130262 [Regression]Click Data Explorer does not cancel palette insert mode
Description: Click Data Explorer does not cancel palette insert mode. Steps to reproduce: 1. Click grid in Palette, then click Data Explorer Result: Move mouse to Layout, it still keep the status of insert grid mode. By the way, after step1, if I clicked a col in dataset and drag it to Layout, the column was inserted as expected but the mouse cursor still kept the insert grid mode.
UI/org.eclipse.birt.report.designer.ui.editors/src/org/eclipse/birt/report/designer/ui/editors/MultiPageReportEditor.java
PageBookView view = (PageBookView) part;
				if ( view.getCurrentPage( ) instanceof DesignerOutlinePage )
				{
					ISelectionProvider provider = (ISelectionProvider) view.getCurrentPage( );
					ReportRequest request = new ReportRequest( view.getCurrentPage( ) );
					List list = new ArrayList( );
					if ( provider.getSelection( ) instanceof IStructuredSelection )
					{
						list = ( (IStructuredSelection) provider.getSelection( ) ).toList( );
					}
					request.setSelectionObject( list );
					request.setType( ReportRequest.SELECTION );
					
					
					
					SessionHandleAdapter.getInstance( )
							.getMediator( )
							.notifyRequest( request );
					SessionHandleAdapter.getInstance( )
							.getMediator( )
							.pushState( );
				}
			}
			if ( getActiveEditor( ) instanceof GraphicalEditorWithFlyoutPalette )
			{
				if ( ( (GraphicalEditorWithFlyoutPalette) getActiveEditor( ) ).getGraphicalViewer( )
						.getEditDomain( )
						.getPaletteViewer( ) != null )
				{
					GraphicalEditorWithFlyoutPalette editor = (GraphicalEditorWithFlyoutPalette) getActiveEditor( );