Move Eclipse 3 components to legacy.
[lgpl/argeo-commons.git] / legacy / org.argeo.cms.ui.workbench / src / org / argeo / cms / ui / workbench / WorkbenchUiPlugin.java
diff --git a/legacy/org.argeo.cms.ui.workbench/src/org/argeo/cms/ui/workbench/WorkbenchUiPlugin.java b/legacy/org.argeo.cms.ui.workbench/src/org/argeo/cms/ui/workbench/WorkbenchUiPlugin.java
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+/*
+ * Copyright (C) 2007-2012 Argeo GmbH
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *         http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.argeo.cms.ui.workbench;
+
+import java.io.IOException;
+import java.util.ResourceBundle;
+
+import javax.security.auth.callback.Callback;
+import javax.security.auth.callback.CallbackHandler;
+import javax.security.auth.callback.UnsupportedCallbackException;
+
+import org.apache.commons.logging.Log;
+import org.apache.commons.logging.LogFactory;
+import org.argeo.cms.CmsException;
+import org.argeo.cms.widgets.auth.DefaultLoginDialog;
+import org.eclipse.core.runtime.ILogListener;
+import org.eclipse.core.runtime.IStatus;
+import org.eclipse.core.runtime.Platform;
+import org.eclipse.jface.resource.ImageDescriptor;
+import org.eclipse.swt.widgets.Display;
+import org.eclipse.ui.plugin.AbstractUIPlugin;
+import org.osgi.framework.BundleContext;
+import org.osgi.framework.ServiceRegistration;
+
+/** The activator class controls the plug-in life cycle */
+public class WorkbenchUiPlugin extends AbstractUIPlugin implements ILogListener {
+       private final static Log log = LogFactory.getLog(WorkbenchUiPlugin.class);
+
+       // The plug-in ID
+       public final static String PLUGIN_ID = "org.argeo.cms.ui.workbench"; //$NON-NLS-1$
+       public final static String THEME_PLUGIN_ID = "org.argeo.cms.ui.theme"; //$NON-NLS-1$
+
+       private ResourceBundle messages;
+       private static BundleContext bundleContext;
+
+       public static InheritableThreadLocal<Display> display = new InheritableThreadLocal<Display>() {
+
+               @Override
+               protected Display initialValue() {
+                       return Display.getCurrent();
+               }
+       };
+
+       final static String CONTEXT_KEYRING = "KEYRING";
+
+       private CallbackHandler defaultCallbackHandler;
+       private ServiceRegistration<CallbackHandler> defaultCallbackHandlerReg;
+
+       // The shared instance
+       private static WorkbenchUiPlugin plugin;
+
+       public void start(BundleContext context) throws Exception {
+               super.start(context);
+               bundleContext = context;
+               defaultCallbackHandler = new DefaultCallbackHandler();
+               defaultCallbackHandlerReg = context.registerService(CallbackHandler.class, defaultCallbackHandler, null);
+
+               plugin = this;
+               messages = ResourceBundle.getBundle(PLUGIN_ID + ".messages");
+               Platform.addLogListener(this);
+               if (log.isTraceEnabled())
+                       log.trace("Eclipse logging now directed to standard logging");
+       }
+
+       public void stop(BundleContext context) throws Exception {
+               bundleContext = null;
+               defaultCallbackHandlerReg.unregister();
+       }
+
+       public static BundleContext getBundleContext() {
+               return bundleContext;
+       }
+
+       /*
+        * Returns the shared instance
+        * 
+        * @return the shared instance
+        */
+       public static WorkbenchUiPlugin getDefault() {
+               return plugin;
+       }
+
+       protected class DefaultCallbackHandler implements CallbackHandler {
+               public void handle(final Callback[] callbacks) throws IOException, UnsupportedCallbackException {
+
+                       // if (display != null) // RCP
+                       Display displayToUse = display.get();
+                       if (displayToUse == null)// RCP
+                               displayToUse = Display.getDefault();
+                       displayToUse.syncExec(new Runnable() {
+                               public void run() {
+                                       DefaultLoginDialog dialog = new DefaultLoginDialog(display.get().getActiveShell());
+                                       try {
+                                               dialog.handle(callbacks);
+                                       } catch (IOException e) {
+                                               throw new CmsException("Cannot open dialog", e);
+                                       }
+                               }
+                       });
+                       // else {// RAP
+                       // DefaultLoginDialog dialog = new DefaultLoginDialog();
+                       // dialog.handle(callbacks);
+                       // }
+               }
+
+       }
+
+       public static ImageDescriptor getImageDescriptor(String path) {
+               return imageDescriptorFromPlugin(THEME_PLUGIN_ID, path);
+       }
+
+       /** Returns the internationalized label for the given key */
+       public static String getMessage(String key) {
+               try {
+                       return getDefault().messages.getString(key);
+               } catch (NullPointerException npe) {
+                       log.warn(key + " not found.");
+                       return key;
+               }
+       }
+
+       /**
+        * Gives access to the internationalization message bundle. Returns null in case
+        * this UiPlugin is not started (for JUnit tests, by instance)
+        */
+       public static ResourceBundle getMessagesBundle() {
+               if (getDefault() != null)
+                       // To avoid NPE
+                       return getDefault().messages;
+               else
+                       return null;
+       }
+
+       public void logging(IStatus status, String plugin) {
+               Log pluginLog = LogFactory.getLog(plugin);
+               Integer severity = status.getSeverity();
+               if (severity == IStatus.ERROR)
+                       pluginLog.error(status.getMessage(), status.getException());
+               else if (severity == IStatus.WARNING)
+                       pluginLog.warn(status.getMessage(), status.getException());
+               else if (severity == IStatus.INFO)
+                       pluginLog.info(status.getMessage(), status.getException());
+               else if (severity == IStatus.CANCEL)
+                       if (pluginLog.isDebugEnabled())
+                               pluginLog.debug(status.getMessage(), status.getException());
+       }
+}