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diff --git a/cms/org.argeo.slc.client.ui/src/org/argeo/slc/client/ui/ClientUiPlugin.java b/cms/org.argeo.slc.client.ui/src/org/argeo/slc/client/ui/ClientUiPlugin.java
new file mode 100644
index 000000000..abf62a0cf
--- /dev/null
+++ b/cms/org.argeo.slc.client.ui/src/org/argeo/slc/client/ui/ClientUiPlugin.java
@@ -0,0 +1,98 @@
+package org.argeo.slc.client.ui;
+
+import javax.jcr.Node;
+import javax.jcr.RepositoryException;
+
+import org.argeo.slc.BasicNameVersion;
+import org.argeo.slc.NameVersion;
+import org.argeo.slc.SlcException;
+import org.argeo.slc.SlcNames;
+import org.argeo.slc.SlcTypes;
+import org.argeo.slc.deploy.ModulesManager;
+import org.eclipse.core.runtime.IProgressMonitor;
+import org.eclipse.core.runtime.IStatus;
+import org.eclipse.core.runtime.Status;
+import org.eclipse.core.runtime.jobs.Job;
+import org.eclipse.jface.resource.ImageDescriptor;
+import org.eclipse.swt.graphics.Image;
+import org.eclipse.ui.plugin.AbstractUIPlugin;
+import org.osgi.framework.BundleContext;
+
+/** The activator class controls the plug-in life cycle */
+public class ClientUiPlugin extends AbstractUIPlugin implements SlcNames {
+	public static final String ID = "org.argeo.slc.client.ui";
+	private static ClientUiPlugin plugin;
+
+	public void start(BundleContext context) throws Exception {
+		super.start(context);
+		plugin = this;
+	}
+
+	public void stop(BundleContext context) throws Exception {
+		plugin = null;
+		super.stop(context);
+	}
+
+	public static ClientUiPlugin getDefault() {
+		return plugin;
+	}
+
+	/** Creates the image */
+	public static Image img(String path) {
+		return getImageDescriptor(path).createImage();
+	}
+
+	public static ImageDescriptor getImageDescriptor(String path) {
+		return imageDescriptorFromPlugin(ID, path);
+	}
+
+	/** Start execution module if it was stopped and vice-versa */
+	public static void startStopExecutionModule(
+			final ModulesManager modulesManager, Node node) {
+		try {
+			if (!node.isNodeType(SlcTypes.SLC_EXECUTION_MODULE))
+				throw new SlcException(node + " is not an execution module");
+
+			String name = node.getProperty(SLC_NAME).getString();
+			String version = node.getProperty(SLC_VERSION).getString();
+			final NameVersion nameVersion = new BasicNameVersion(name, version);
+			Boolean started = node.getProperty(SLC_STARTED).getBoolean();
+
+			Job job;
+			if (started) {
+				job = new Job("Stop " + nameVersion) {
+					protected IStatus run(IProgressMonitor monitor) {
+						monitor.beginTask("Stop " + nameVersion, 1);
+						modulesManager.stop(nameVersion);
+						monitor.worked(1);
+						return Status.OK_STATUS;
+					}
+
+					protected void canceling() {
+						getThread().interrupt();
+						super.canceling();
+					}
+				};
+			} else {
+				job = new Job("Start " + nameVersion) {
+					protected IStatus run(IProgressMonitor monitor) {
+						monitor.beginTask("Start " + nameVersion, 1);
+						modulesManager.start(nameVersion);
+						monitor.worked(1);
+						return Status.OK_STATUS;
+					}
+
+					protected void canceling() {
+						getThread().interrupt();
+						super.canceling();
+					}
+				};
+			}
+			job.setUser(true);
+			job.schedule();
+		} catch (RepositoryException e) {
+			throw new SlcException("Cannot start " + node, e);
+		}
+
+	}
+}