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
rootEntry.addPropertySheetEntryListener(entryListener);
		
		
		setInput(input);
	}
	/**
	 * The <code>PropertySheetViewer</code> implementation of this
	 * <code>Viewer</code> method does nothing.
	 */
	public void setSelection(ISelection selection, boolean reveal) {
	}
	/**
	 * Sets the status line manager this view will use to show messages.
	 * 
	 * @param manager
	 *            the status line manager
	 */
	public void setStatusLineManager(IStatusLineManager manager) {
		statusLineManager = manager;
	}
	/**
	 * Shows the categories.
	 */
	
	void showCategories() {
		isShowingCategories = true;
		refresh();
	}
	/**
	 * Shows the expert properties.