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
*/
    
    void showCategories() {
        isShowingCategories = true;
        refresh();
    }
    /**
     * Shows the expert properties.
     */
    
    void showExpert() {
        isShowingExpertProperties = true;
        refresh();
    }
    /**
     * Updates the categories. Reuses old categories if possible.
     */
    private void updateCategories() {
        
        if (categories == null) {
			categories = new PropertySheetCategory[0];
		}
        
        List childEntries = getFilteredEntries(rootEntry.getChildEntries());
        
        if (childEntries.size() == 0) {
            categories = new PropertySheetCategory[0];
            return;
        }