Bug 144378 There is no checkbox for user to bind a dynamic image
Description: Create a dynamic image, there is no checkbox for user to bind the column of dataset. Steps to reproduce: 1.Create a sample datasource and dataset with "select * from CLASSICMODELS.PRODUCTLINES". 2.Add a image to the report layout, select dynamic image type, and then click "Binding" button, select the dataset, and want to bind a column. But there is no checkbox for user to do this action. Expected result: Like data item, there is a checkbox for user to bind the column.
UI/org.eclipse.birt.report.designer.ui/src/org/eclipse/birt/report/designer/ui/dialogs/ColumnBindingDialog.java
public String getColumnText( Object element, int columnIndex )
		{
			if ( element == dummyChoice )
			{
				if ( columnIndex == 1 )
				{
					return INPUT_PROPMT;
				}
				return ""; 
			}
			ComputedColumnHandle handle = ( (ComputedColumnHandle) element );
			String text = null;
			switch ( columnIndex )
			{
				case 1 :
					text = handle.getName( );
					break;
				case 2 :
					text = handle.getDisplayName( );
					break;
				case 3 :
					text = ChoiceSetFactory.getDisplayNameFromChoiceSet( handle.getDataType( ),
							DATA_TYPE_CHOICE_SET );
					break;
				case 4 :
					text = handle.getExpression( );
					break;
				case 5 :
					String value = handle.getAggregateOn( );
					String groupType = DEUtil.getGroupControlType( inputElement );