Bug 108102 [Viewers] Project expands in wrong working set
I am using "Show->Working Sets" in the package explorer. Some of the working sets contain the same project: Working Set-1: - Project-A - Project-B - Project-C Working Set-2: - Project-B - Project-C - Project-D If I now double-click "Working Set-1.Project-B" "Project-B" in working set "Working Set-2" will be expanded. If the working set "Working Set-2" itself is not expanded it will seem as if nothing happens, but after expanding "Working Set-2" one can see the changed state of the project. Double-clicking "Working Set-2.Project-B" works as expected.
bundles/org.eclipse.jface/src/org/eclipse/jface/viewers/StructuredViewer.java
mapElement(element, item);
	}
	/**
	 * Disassociates the given SWT item from its corresponding element. Sets the
	 * item's data to <code>null</code> and removes the element from the
	 * element map (if enabled).
	 * 
	 * @param item
	 *            the widget
	 */
	protected void disassociate(Item item) {
		Object element = item.getData();
		Assert.isNotNull(element);
		
		unmapElement(element, item);
		item.setData(null);
	}
	/**
	 * Returns the widget in this viewer's control which represents the given
	 * element if it is the viewer's input.
	 * <p>
	 * This method is internal to the framework; subclassers should not call
	 * this method.
	 * </p>
	 * 
	 * @param element
	 * @return the corresponding widget, or <code>null</code> if none