| /******************************************************************************* |
| * Copyright (c) 2000, 2003 IBM Corporation and others. |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Common Public License v1.0 |
| * which accompanies this distribution, and is available at |
| * http://www.eclipse.org/legal/cpl-v10.html |
| * |
| * Contributors: |
| * IBM Corporation - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.ui.examples.javaeditor; |
| |
| |
| import org.eclipse.jface.text.rules.RuleBasedScanner; |
| import org.eclipse.ui.examples.javaeditor.java.JavaCodeScanner; |
| import org.eclipse.ui.examples.javaeditor.javadoc.JavaDocScanner; |
| import org.eclipse.ui.examples.javaeditor.util.JavaColorProvider; |
| |
| /** The JavaEditorEnvironment maintains singletons used by the java editor |
| * examples. |
| */ |
| public class JavaEditorEnvironment { |
| |
| private static JavaColorProvider fgColorProvider; |
| private static JavaCodeScanner fgCodeScanner; |
| private static JavaDocScanner fgDocScanner; |
| |
| private static int fgRefCount= 0; |
| |
| /** |
| * A connection has occured - initialize the receiver if it is the first activation. |
| */ |
| public static void connect(Object client) { |
| if (++fgRefCount == 1) { |
| fgColorProvider= new JavaColorProvider(); |
| fgCodeScanner= new JavaCodeScanner(fgColorProvider); |
| fgDocScanner= new JavaDocScanner(fgColorProvider); |
| } |
| } |
| |
| /** |
| * A disconnection has occured - clear the receiver if it is the last deactivation. |
| */ |
| public static void disconnect(Object client) { |
| if (--fgRefCount == 0) { |
| fgCodeScanner= null; |
| fgDocScanner= null; |
| fgColorProvider.dispose(); |
| fgColorProvider= null; |
| } |
| } |
| |
| /** |
| * Returns the singleton scanner. |
| */ |
| public static RuleBasedScanner getJavaCodeScanner() { |
| return fgCodeScanner; |
| } |
| |
| /** |
| * Returns the singleton color provider. |
| */ |
| public static JavaColorProvider getJavaColorProvider() { |
| return fgColorProvider; |
| } |
| |
| /** |
| * Returns the singleton document scanner. |
| */ |
| public static RuleBasedScanner getJavaDocScanner() { |
| return fgDocScanner; |
| } |
| } |