Bug 147020 Template reversion is not correct
Steps to reproduce: 1.New a table, add a data in table detail, convert it to a template report item 2.Bind the table with data set, double click the template report item Expected result: The template report item is reverted to data item first, "Select data binding" dialog pops up. Actual result: "Select data binding" dialog pops up. and no available column bindings listed. Please make sure the result of "Double click" is the same as context menu.
UI/org.eclipse.birt.report.designer.ui/src/org/eclipse/birt/report/designer/internal/ui/editors/schematic/editparts/PlaceHolderEditPart.java
* Get the current font family.
	 * 
	 * @return The current font family
	 */
	protected Font getFont( )
	{
		return getFont( (ReportItemHandle) getDefaultHandle( ) );
	}
	private Image getImage( )
	{
		if ( getDefaultHandle( ) instanceof LabelHandle )
		{
			return ReportPlatformUIImages
					.getImage( IReportGraphicConstants.ICON_ELEMENT_LABEL );
		}
		if ( getDefaultHandle( ) instanceof TextItemHandle )
		{
			return ReportPlatformUIImages
					.getImage( IReportGraphicConstants.ICON_ELEMENT_TEXT );
		}
		if ( getDefaultHandle( ) instanceof DataItemHandle )
		{
			return ReportPlatformUIImages
					.getImage( IReportGraphicConstants.ICON_ELEMENT_DATA );
		}
		if ( getDefaultHandle( ) instanceof TextDataHandle )
		{
			return ReportPlatformUIImages
					.getImage( IReportGraphicConstants.ICON_ELEMENT_TEXTDATA );
		}