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.lib/src/org/eclipse/birt/report/designer/internal/lib/views/outline/dnd/LibraryDropListener.java
List exts = ExtensionPointManager.getInstance( )
				.getExtendedElementPoints( );
		if ( exts != null )
		{
			for ( Iterator itor = exts.iterator( ); itor.hasNext( ); )
			{
				ExtendedElementUIPoint point = (ExtendedElementUIPoint) itor
						.next( );
				if ( point != null )
				{
					supportList.add( GuiExtensionManager
							.getExtendedPalletTemplateName( point ) );
				}
			}
		}
	}
	/**
	 * @param viewer
	 */
	public LibraryDropListener( TreeViewer viewer )
	{
		super( viewer );
	}
	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.birt.report.designer.internal.ui.dnd.DesignElementDropAdapter#validateTarget(java.lang.Object,
	 *      java.lang.Object)
	 */
	protected boolean validateTarget( Object target, Object transfer )