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
{
		if ( canSelect )
		{
			if ( inputElement instanceof DataItemHandle )
			{
				selectedColumnName = ( (DataItemHandle) inputElement ).getResultSetColumn( );
				updateSelection( );
			}
		}
		/*
		 * generateButton.setEnabled( inputElement.getDataSet( ) != null ||
		 * DEUtil.getBindingHolder( inputElement ).getDataSet( ) != null );
		 */
		updateButtons( );
		return super.initDialog( );
	}
	protected void okPressed( )
	{
		if ( canSelect )
		{
			setResult( selectedColumnName );
			if ( inputElement instanceof DataItemHandle )
			{
				try
				{
					( (DataItemHandle) inputElement ).setResultSetColumn( selectedColumnName );
				}
				catch ( SemanticException e )
				{
					ExceptionHandler.handle( e );