Bug 192347 [acceptance]Theme cannot be deleted[01]
Description: [acceptance]Theme cannot be deleted Build number:2.2.0.v20070613 Steps to reproduce: 1. New a library. 2. New a theme and delete it. Expected result: Theme can be deleted Actual result: Delete key doesn't work and no delete item in context menu. Error log:n/a
UI/org.eclipse.birt.report.designer.core/src/org/eclipse/birt/report/designer/util/DNDUtil.java
* Validates target column can paste another column.
	 * 
	 * @param targetObj
	 *            target table/grid column
	 * @param transferData
	 *            copy data of table/grid column
	 * @param isNew
	 *            true: insert and paste; false: override and paste
	 * @return can paste
	 */
	public static boolean handleValidateContainColumnPaste(
			ColumnHandle targetObj, ColumnBandData transferData, boolean isNew )
	{
		int columnNumber = HandleAdapterFactory.getInstance( )
				.getColumnHandleAdapter( targetObj )
				.getColumnNumber( );
		Object parent = targetObj.getContainer( );
		if ( parent instanceof TableHandle )
		{
			if ( isNew )
			{
				return ( (TableHandle) parent ).canInsertAndPasteColumn( transferData,
						columnNumber );
			}
			return ( (TableHandle) parent ).canPasteColumn( transferData,
					columnNumber,
					true );
		}
		else if ( parent instanceof GridHandle )
		{