--- /dev/null
+/*******************************************************************************\r
+ * Copyright (c) 2007, 2010 Association for Decentralized Information Management\r
+ * in Industry THTH ry.\r
+ * All rights reserved. This program and the accompanying materials\r
+ * are made available under the terms of the Eclipse Public License v1.0\r
+ * which accompanies this distribution, and is available at\r
+ * http://www.eclipse.org/legal/epl-v10.html\r
+ *\r
+ * Contributors:\r
+ * VTT Technical Research Centre of Finland - initial API and implementation\r
+ *******************************************************************************/\r
+package org.simantics.ui.workbench;\r
+\r
+import java.util.ArrayList;\r
+import java.util.Hashtable;\r
+import java.util.List;\r
+\r
+import org.osgi.framework.BundleContext;\r
+import org.osgi.framework.ServiceRegistration;\r
+\r
+/**\r
+ * @author Tuukka Lehtonen\r
+ */\r
+public class WorkbenchShutdownServiceImpl implements WorkbenchShutdownService {\r
+\r
+ private static ServiceRegistration service = null;\r
+\r
+ private final List<Runnable> hooks = new ArrayList<Runnable>();\r
+\r
+ /**\r
+ * Invoked by the bundle activator to initialize the cache service.\r
+ * \r
+ * @param context the bundle context to register the service with\r
+ */\r
+ @SuppressWarnings({ "unchecked", "rawtypes" })\r
+ public synchronized static void initialize(BundleContext context) {\r
+ if (service == null) {\r
+ service = context.registerService(WorkbenchShutdownService.class.getName(), new WorkbenchShutdownServiceImpl(), new Hashtable());\r
+ }\r
+ }\r
+\r
+ /**\r
+ * Invoked by the bundle activator to close the cache service.\r
+ */\r
+ public synchronized static void close() {\r
+ if (service != null) {\r
+ service.unregister();\r
+ service = null;\r
+ }\r
+ }\r
+\r
+ @Override\r
+ public synchronized void registerShutdownHook(Runnable hook) {\r
+ hooks.add(hook);\r
+ }\r
+\r
+ @Override\r
+ public synchronized void doShutdown() {\r
+ Runnable[] rs = hooks.toArray(new Runnable[0]);\r
+ hooks.clear();\r
+ for (Runnable hook : rs) {\r
+ try {\r
+ hook.run();\r
+ } catch (Exception e) {\r
+ handleException(hook, e);\r
+ } catch (LinkageError e) {\r
+ handleException(hook, e);\r
+ } catch (AssertionError e) {\r
+ handleException(hook, e);\r
+ }\r
+ }\r
+ }\r
+\r
+ protected void handleException(Object source, Throwable t) {\r
+ System.err.println(getClass().getSimpleName() + ": workbench shutdown hook " + source + " caused unexpected exception:");\r
+ t.printStackTrace();\r
+ }\r
+\r
+}\r