Bug 116377 container's data set should be list in dynamic image expression builder
description: container's data set should be list in dynamic image expression builder steps to reproduce: 1. drag an image to one cell of table 2. choose dynamic image 3. click on expression builder.... actual result: no data set list in the expression builder expected result: container's data set should be list in dynamic image expression builder
UI/org.eclipse.birt.report.designer.ui/src/org/eclipse/birt/report/designer/internal/ui/editors/schematic/extensions/GuiExtensionManager.java
/**
	 * @param model
	 * @return
	 */
	public static String getExtendedElementID( ExtendedItemHandle model )
	{
		return model.getExtensionName( );
	}
	/**
	 * Get display name
	 * 
	 * @param obj
	 * @return
	 */
	public static String getExtensionDisplayName( Object obj )
	{
		String value = EXT_MGR_LABEL;
		if ( obj instanceof ExtendedItemHandle )
		{
			String name = ( (ExtendedItemHandle) obj ).getDefn( )
					.getDisplayName( );
			if ( name != null )
			{
				value = name;
			}
		}
		return value;
	}
	/**
	 * @param object