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
/**
     * Removes the given cell editor activation listener from this viewer. Has
     * no effect if an identical activation listener is not registered.
     * 
     * @param listener
     *            a cell editor activation listener
     */
    
    void removeActivationListener(ICellEditorActivationListener listener) {
        activationListeners.remove(listener);
    }
    /**
     * Remove the given item from the tree. Remove our listener if the
     * item's user data is a an entry then set the user data to null
     * 
     * @param item
     *            the item to remove
     */
    private void removeItem(TreeItem item) {
        Object data = item.getData();
        if (data instanceof IPropertySheetEntry) {
			((IPropertySheetEntry) data)
                    .removePropertySheetEntryListener(entryListener);
		}
        item.setData(null);
        
        
        entryToItemMap.remove(data);
        item.dispose();
    }