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diff --git a/org.argeo.security.ui/src/main/java/org/argeo/security/ui/SecurityUiPlugin.java b/org.argeo.security.ui/src/main/java/org/argeo/security/ui/SecurityUiPlugin.java
new file mode 100644
index 000000000..03584185b
--- /dev/null
+++ b/org.argeo.security.ui/src/main/java/org/argeo/security/ui/SecurityUiPlugin.java
@@ -0,0 +1,109 @@
+/*
+ * 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.security.ui;
+
+import java.io.IOException;
+
+import javax.security.auth.callback.Callback;
+import javax.security.auth.callback.CallbackHandler;
+import javax.security.auth.callback.UnsupportedCallbackException;
+
+import org.argeo.ArgeoException;
+import org.argeo.security.ui.dialogs.DefaultLoginDialog;
+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 SecurityUiPlugin extends AbstractUIPlugin {
+
+	// The plug-in ID
+	public static final String PLUGIN_ID = "org.argeo.security.ui"; //$NON-NLS-1$
+
+	public final static String CONTEXT_KEYRING = "KEYRING";
+
+	private CallbackHandler defaultCallbackHandler;
+	private ServiceRegistration defaultCallbackHandlerReg;
+
+	private static SecurityUiPlugin plugin;
+
+	public static InheritableThreadLocal<Display> display = new InheritableThreadLocal<Display>() {
+
+		@Override
+		protected Display initialValue() {
+			return Display.getCurrent();
+		}
+	};
+
+	public void start(BundleContext context) throws Exception {
+		super.start(context);
+		plugin = this;
+
+		defaultCallbackHandler = new DefaultCallbackHandler();
+		defaultCallbackHandlerReg = context.registerService(
+				CallbackHandler.class.getName(), defaultCallbackHandler, null);
+	}
+
+	public void stop(BundleContext context) throws Exception {
+		plugin = null;
+		defaultCallbackHandlerReg.unregister();
+		super.stop(context);
+	}
+
+	/**
+	 * Returns the shared instance
+	 * 
+	 * @return the shared instance
+	 */
+	public static SecurityUiPlugin getDefault() {
+		return plugin;
+	}
+
+	public static ImageDescriptor getImageDescriptor(String path) {
+		return imageDescriptorFromPlugin(PLUGIN_ID, path);
+	}
+
+	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 ArgeoException("Cannot open dialog", e);
+					}
+				}
+			});
+			// else {// RAP
+			// DefaultLoginDialog dialog = new DefaultLoginDialog();
+			// dialog.handle(callbacks);
+			// }
+		}
+
+	}
+}