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
{
			NullChoice = CHOICE_FROM_CONTAINER;
		}
		else
		{
			NullChoice = CHOICE_NONE;
		}
		isDataSetVisible = DEUtil.getBindingHolder( inputElement )
				.getElement( )
				.getDefn( )
				.isPropertyVisible( IReportItemModel.DATA_SET_PROP );
	}
	protected Control createDialogArea( Composite parent )
	{
		UIUtil.bindHelp( parent, IHelpContextIds.COLUMNBINDING_DIALOG_ID );
		Composite parentComposite = (Composite) super.createDialogArea( parent );
		if ( this.canSelect )
		{
			composite = new Composite( parentComposite, SWT.NONE );
			composite.setLayoutData( new GridData( GridData.FILL_HORIZONTAL ) );
			composite.setLayout( UIUtil.createGridLayoutWithoutMargin( 2, false ) );
			warnLabel = new CLabel( composite, SWT.NONE );
			warnLabel.setImage( PlatformUI.getWorkbench( )
					.getSharedImages( )
					.getImage( ISharedImages.IMG_OBJS_WARN_TSK ) );
			warnLabel.setText( WARN_COLUMN_BINDINGS );
			GridData gd = new GridData( GridData.FILL_HORIZONTAL );
			gd.horizontalSpan = 2;
			warnLabel.setLayoutData( gd );
			label = new Label( composite, SWT.NONE );