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
protected void sanityCheckState( IEditorInput input )
	{
		if ( fModificationStamp == -1 )
		{
			fModificationStamp = getModificationStamp( input );
		}
		long stamp = getModificationStamp( input );
		if ( stamp != fModificationStamp )
		{
			
			
			fModificationStamp = stamp;
			handleEditorInputChanged( );
		}
	}
	/**
	 * Handles an external change of the editor's input element. Subclasses may
	 * extend.
	 */
	protected void handleEditorInputChanged( )
	{
		String title = Messages.getString( "ReportEditor.error.activated.outofsync.title" ); 
		String msg = Messages.getString( "ReportEditor.error.activated.outofsync.message" ); 
		if ( MessageDialog.openQuestion( getSite( ).getShell( ), title, msg ) )
		{
			IEditorInput input = getEditorInput( );
			if ( input == null )
			{
				closeEditor( isSaveOnCloseNeeded( ) );
			}