Bug 56818 [PropertiesView] Clicking on Advanced Properties toggle when categories are collapsed removes the + next to the category
Clicking on Advanced Properties toggle when categories are collapsed removes the plus sign (+) next to the category and it can no longer be expanded. To reproduce: 1.)Open the Properties view. 2.)Have Show Categories turned on, and Show Advanced Properties turned off. 3.)Collapse all open categories. 4.)Click the Show Advanced Properties button. 5.)Note the plus sign goes away and the categories can no longer be expanded. You need to click the Show Advanced Properties button off to see the plus sign again.
bundles/org.eclipse.ui.views/src/org/eclipse/ui/views/properties/PropertySheetViewer.java
*  (element type <code>IPropertySheetEntry</code>)
	 */
	private List getFilteredEntries(IPropertySheetEntry[] entires) {
		
		if (isShowingExpertProperties)
			return Arrays.asList(entires);
		
		List filteredEntries = new ArrayList(entires.length);
		for (int i = 0; i < entires.length; i++) {
			String[] filters = ((IPropertySheetEntry) entires[i]).getFilters();
			boolean expert = false;
			if (filters != null) {
				for (int j = 0; j < filters.length; j++) {
					if (filters[j].equals(IPropertySheetEntry.FILTER_ID_EXPERT)) {
						expert = true;
						break;
					}
				}
			}
			if (!expert)
				filteredEntries.add(entires[i]);
		}
		return filteredEntries;
	}
	/**
	 * The <code>PropertySheetViewer</code> implementation of this method
	 * declared on <code>IInputProvider</code> returns the objects for which
	 * the viewer is currently showing properties. It returns an
	 * <code>Object[]</code> or <code>null</code>.
	 */