X-Git-Url: https://gerrit.simantics.org/r/gitweb?a=blobdiff_plain;f=bundles%2Forg.simantics.ui%2Fsrc%2Forg%2Fsimantics%2Fui%2Fworkbench%2FWorkbenchShutdownServiceImpl.java;fp=bundles%2Forg.simantics.ui%2Fsrc%2Forg%2Fsimantics%2Fui%2Fworkbench%2FWorkbenchShutdownServiceImpl.java;h=ea9d14f3f175a03474dcf219a654a9cc16939207;hb=969bd23cab98a79ca9101af33334000879fb60c5;hp=0000000000000000000000000000000000000000;hpb=866dba5cd5a3929bbeae85991796acb212338a08;p=simantics%2Fplatform.git

diff --git a/bundles/org.simantics.ui/src/org/simantics/ui/workbench/WorkbenchShutdownServiceImpl.java b/bundles/org.simantics.ui/src/org/simantics/ui/workbench/WorkbenchShutdownServiceImpl.java
new file mode 100644
index 000000000..ea9d14f3f
--- /dev/null
+++ b/bundles/org.simantics.ui/src/org/simantics/ui/workbench/WorkbenchShutdownServiceImpl.java
@@ -0,0 +1,79 @@
+/*******************************************************************************
+ * Copyright (c) 2007, 2010 Association for Decentralized Information Management
+ * in Industry THTH ry.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ *
+ * Contributors:
+ *     VTT Technical Research Centre of Finland - initial API and implementation
+ *******************************************************************************/
+package org.simantics.ui.workbench;
+
+import java.util.ArrayList;
+import java.util.Hashtable;
+import java.util.List;
+
+import org.osgi.framework.BundleContext;
+import org.osgi.framework.ServiceRegistration;
+
+/**
+ * @author Tuukka Lehtonen
+ */
+public class WorkbenchShutdownServiceImpl implements WorkbenchShutdownService {
+
+    private static ServiceRegistration service = null;
+
+    private final List<Runnable>       hooks   = new ArrayList<Runnable>();
+
+    /**
+     * Invoked by the bundle activator to initialize the cache service.
+     * 
+     * @param context the bundle context to register the service with
+     */
+    @SuppressWarnings({ "unchecked", "rawtypes" })
+    public synchronized static void initialize(BundleContext context) {
+        if (service == null) {
+            service = context.registerService(WorkbenchShutdownService.class.getName(), new WorkbenchShutdownServiceImpl(), new Hashtable());
+        }
+    }
+
+    /**
+     * Invoked by the bundle activator to close the cache service.
+     */
+    public synchronized static void close() {
+        if (service != null) {
+            service.unregister();
+            service = null;
+        }
+    }
+
+    @Override
+    public synchronized void registerShutdownHook(Runnable hook) {
+        hooks.add(hook);
+    }
+
+    @Override
+    public synchronized void doShutdown() {
+        Runnable[] rs = hooks.toArray(new Runnable[0]);
+        hooks.clear();
+        for (Runnable hook : rs) {
+            try {
+                hook.run();
+            } catch (Exception e) {
+                handleException(hook, e);
+            } catch (LinkageError e) {
+                handleException(hook, e);
+            } catch (AssertionError e) {
+                handleException(hook, e);
+            }
+        }
+    }
+
+    protected void handleException(Object source, Throwable t) {
+        System.err.println(getClass().getSimpleName() + ": workbench shutdown hook " + source + " caused unexpected exception:");
+        t.printStackTrace();
+    }
+
+}