Bug 153387 Database item can't be dragged and dropped onto editor field
Steps to reproduce: 1.Start up BIRT in Mac OS X; 2.File->New->Project; 3.File->New->Report Design; 4.In Data Explorer, create a New Data Source, and choose "Classic Models Inc. Sample DataBase", press "Next" and then press "finish"; 5.In Data Explorer, create a New Data Set, press "Next"; 6.In the popup window, expand the "CLASSICMODELS", select and drag a item onto the editor field at right side.
data/org.eclipse.birt.report.data.oda.jdbc.ui/src/org/eclipse/birt/report/data/oda/jdbc/ui/editors/SQLDataSetEditorPage.java
viewer.configure( sourceViewerConfiguration );
		
		doc = new Document( getQueryText() );
		FastPartitioner partitioner = new FastPartitioner( new SQLPartitionScanner( ),
				new String[]{
						SQLPartitionScanner.SINGLE_LINE_COMMENT1,
						SQLPartitionScanner.SINGLE_LINE_COMMENT2,
						SQLPartitionScanner.MULTI_LINE_COMMENT,
						IDocument.DEFAULT_CONTENT_TYPE
				} );
		partitioner.connect( doc );
		doc.setDocumentPartitioner( partitioner );
		viewer.setDocument( doc );
		viewer.getTextWidget( ).setFont( JFaceResources.getTextFont( ) );
		viewer.getTextWidget( )
				.addBidiSegmentListener( new BidiSegmentListener( ) {
					/*
					 * @see org.eclipse.swt.custom.BidiSegmentListener#lineGetSegments(org.eclipse.swt.custom.BidiSegmentEvent)
					 */
					public void lineGetSegments( BidiSegmentEvent event )
					{
						event.segments = SQLUtility.getBidiLineSegments( event.lineText );
					}
				} );
		attachMenus( viewer );
        
        GridData data = new GridData(GridData.FILL_BOTH);
        viewer.getControl().setLayoutData(data);