Bug 213504 [Markers] Problems View no longer supports dragging into the Editor Area
I20071218-0800. You used to be able to drag an error into the Editor Area in order to open the associated file. I commonly use the DnD gesture to open a 'problem' but it appears that this isn't working in the new version...
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/internal/views/markers/ExtendedMarkersView.java
}
		}
		
		pageSelectionListener = getPageSelectionListener();
		getSite().getPage().addPostSelectionListener(pageSelectionListener);
		partListener = getPartListener();
		getSite().getPage().addPartListener(partListener);
		pageSelectionListener.selectionChanged(getSite().getPage()
				.getActivePart(), getSite().getPage().getSelection());
		viewer.addOpenListener(new IOpenListener() {
			public void open(OpenEvent event) {
				openSelectedMarkers();
			}
		});
		viewer.getTree().addTreeListener(new TreeAdapter() {
			/*
			 * (non-Javadoc)
			 * 
			 * @see org.eclipse.swt.events.TreeAdapter#treeCollapsed(org.eclipse.swt.events.TreeEvent)
			 */
			public void treeCollapsed(TreeEvent e) {
				removeExpandedCategory((MarkerCategory) e.item.getData());
			}
			/*
			 * (non-Javadoc)
			 * 
			 * @see org.eclipse.swt.events.TreeAdapter#treeExpanded(org.eclipse.swt.events.TreeEvent)
			 */
			public void treeExpanded(TreeEvent e) {
				addExpandedCategory((MarkerCategory) e.item.getData());