Bug 100565 [Viewers] Tree viewer selection not revealed if unchanged
[RC3] Steps: 1. Check out org.eclipse.ui.workbench 2. Open Workbench.java 3. Ctrl-O to open Quick Outline 4. Type "r", note that the field "runEventLoop" is the first match 5. Type "u", note that the field is not shown anymore 6. Type arrow-down key, note that you cannot see the selected entry
bundles/org.eclipse.jface/src/org/eclipse/jface/viewers/AbstractTreeViewer.java
int size = items.length;
		if (sorter == null)
			return size;
	    int min = lastInsertion, max = size - 1;
		while (min <= max) {
            int mid = (min + max) / 2;
            Object data = items[mid].getData();
            int compare = sorter.compare(this, data, element);
            if (compare == 0) {
                return mid;
            }
            if (compare < 0)
                min = mid + 1;
            else
                max = mid - 1;
	        }
	   return min;
	    
			
	}
	/**
     * Returns the index where the item should be inserted. It uses sorter to
     * determine the correct position, if sorter is not assigned, returns the
     * index of the element after the last.
     * 
     * @param parent The parent widget
     * @param sorter The sorter to use.
     * @param startIndex
     *            the start index to start search for position from this allows
     *            optimising search for multiple elements that are sorted