Bug 215159 [PropertiesView] description of last selected item stays in status line after deselection
Build ID: M20071023-1652 Steps To Reproduce: 1. use a standard java project 2. make sure the package explorer and properties view are open 3. select the "src" folder in the package explorer -> status line shows "project - src" 4. select a random property in the properties view (e.g. "path") -> status line shows "path" 5. select the "JRE System Library" in the package explorer -> status line shows "JRE System Library ... - project" 6. set focus on the (now empty) properties view -> status line shows "path" (should be empty, shouldn't it?) More information: I found this one developing a RCP using PropertyDescriptors and its setDescription(String) method. It's a cosmetic bug, but I think it won't be much work clearing the status line when the properties view looses all content.
bundles/org.eclipse.ui.views/src/org/eclipse/ui/views/properties/PropertySheetViewer.java
updateCategories();
		}
        List children = getChildren(node);
        
        Set set = new HashSet(childItems.length * 2 + 1);
        for (int i = 0; i < childItems.length; i++) {
            Object data = childItems[i].getData();
            if (data != null) {
                Object e = data;
                int ix = children.indexOf(e);
                if (ix < 0) { 
                    removeItem(childItems[i]);
                } else { 
                    set.add(e);
                }
            } else if (data == null) { 
                childItems[i].dispose();
            }
        }
        
        int oldCnt = -1;
        if (widget == tree) {
			oldCnt = tree.getItemCount();
		}
        
        int newSize = children.size();
        for (int i = 0; i < newSize; i++) {
            Object el = children.get(i);
            if (!set.contains(el)) {
				createItem(el, widget, i);