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
IHelpConstants.CONEXT_ID_DATASET_JDBC );
	}
	/**
	 * create page control for sql edit page
	 * 
	 * @param parent
	 * @return
	 */
	private Control createPageControl( Composite parent )
	{
		SashForm SashForm = new SashForm( parent, SWT.HORIZONTAL );
		SashForm.setLayoutData( new GridData( GridData.FILL_BOTH ) );
		initialImage( );
		initialJdbcInfo( );
		createTableSelectionComposite( SashForm );
		createTextualQueryComposite( SashForm );
		setSashFormWeights( SashForm );
		return SashForm;
	}
	
	/**
	 * Initialize image property
	 * 
	 */
	private void initialImage( )
	{
		tableImage = JFaceResources.getImage( TABLE_ICON );
		viewImage = JFaceResources.getImage( VIEW_ICON );
		schemaImage = JFaceResources.getImage( SCHEMA_ICON );
		dataBaseImage = JFaceResources.getImage( DATABASE_ICON );