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
if (node instanceof IPropertySheetEntry) {
			entry = (IPropertySheetEntry) node;
		} else {
			category = (PropertySheetCategory) node;
		}
        boolean hasPlus = item.getItemCount() > 0;
        boolean needsPlus = category != null || entry.hasChildEntries();
        boolean removeAll = false;
        boolean addDummy = false;
        if (hasPlus != needsPlus) {
            if (needsPlus) {
                addDummy = true;
            } else {
                removeAll = true;
            }
        }
        if (removeAll) {
            
            TreeItem[] items = item.getItems();
            for (int i = 0; i < items.length; i++) {
                removeItem(items[i]);
            }
        }
        if (addDummy) {
            new TreeItem(item, SWT.NULL); 
            
        }
    }
}