Bug 5699 Add ResourceTransfer to packages view
The packages view should add the ResoruceTransfer as a drag source to its list of transfers
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/dnd/JdtViewerDropAdapter.java
*/	 
	public void drop(Object target, DropTargetEvent event) {
	}
	
	/**
	 * Validates if the drop is valid. The method calls <code>validateDrop
	 * (Object target, DropTargetEvent event). Implementors can alter the 
	 * <code>currentDataType</code> field and the <code>detail</code> field 
	 * to give feedback about drop acceptence.
	 */
	public void validateDrop(DropTargetEvent event) {
		validateDrop(fTarget, event, fRequestedOperation);
	}
	
	/**
	 * Validates if the drop on the current target is valid. The method
	 * can alter the <code>currentDataType</code> field and the <code>
	 * detail</code> field to give feedback about drop acceptence.
	 * @param target the drop target in form of a domain element.
	 * @param event the drop traget event
	 * @param operation the operation requested by the user.
	 */
	public void validateDrop(Object target, DropTargetEvent event, int operation) {
	}
	
	public void dragEnter(DropTargetEvent event) {
		fLastScroll= System.currentTimeMillis();
		dragOperationChanged(event);
	}