Logout button

src/main/java/edu/kit/kastel/sdq/intelligrade/extensions/settings/ArtemisSettings.java

@@ -87,7 +87,16 @@ public class ArtemisSettings implements Configurable {
             this.apply();
             PluginState.getInstance().connect();
         });
-        contentPanel.add(loginButton, "span 2, growx");
+        contentPanel.add(loginButton, "span 1, growx");
+
+        // Button to log out of artemis
+        var logoutButton = new JButton("Logout");
+        logoutButton.addActionListener(a -> {
+            // request a logout
+            PluginState.getInstance().logout();
+            this.apply();
+        });
+        contentPanel.add(logoutButton, "span 1, growx");
 
         // Login options
         contentPanel.add(new TitledSeparator("Login Options"), "span 2, growx");

src/main/java/edu/kit/kastel/sdq/intelligrade/login/CefUtils.java

@@ -29,30 +29,38 @@ private CefUtils() {
         throw new IllegalAccessError("Utility Class");
     }
 
+    /**
+     * Reset the CEF Browsers cookies to remove the artemis login token
+     */
+    public static void resetCookies() {
+
+        // offscreen rendering is problematic on Linux
+        JBCefBrowser browser = JBCefBrowser.createBuilder()
+                .setClient(browserClient)
+                .setOffScreenRendering(false)
+                .build();
+
+        // clear cookies
+        CefApp.getInstance().onInitialization(state -> {
+            browser.getJBCefCookieManager().deleteCookies(null, null);
+        });
+        browser.dispose();
+    }
+
     /**
      * Create and display a Window containing a JBCef Window to request login. Call this on the EDT!
      *
      * @return A future on the JWT Cookie to log in. Don't await it on the EDT.
      */
     public static CompletableFuture<JBCefCookie> jcefBrowserLogin() {
 
-        if (browserClient == null) {
-            browserClient = JBCefApp.getInstance().createClient();
-        }
-
         // offscreen rendering is problematic on Linux
         JBCefBrowser browser = JBCefBrowser.createBuilder()
                 .setClient(browserClient)
                 .setOffScreenRendering(false)
                 .setUrl(ArtemisSettingsState.getInstance().getArtemisInstanceUrl())
                 .build();
 
-        // TODO the following code deletes the jwt cookie, which is needed for a "fresh" login
-        // TODO add this somewhere where it is useful
-        // CefApp.getInstance().onInitialization(state -> {
-        //     browser.getJBCefCookieManager().deleteCookies(null, null);
-        // });
-
         // set focus handler because it gets invoked sometimes and causes NullPE otherwise
         CefFocusHandler focusHandler = new CefWindowFocusHandler();
         browserClient.addFocusHandler(focusHandler, browser.getCefBrowser());

src/main/java/edu/kit/kastel/sdq/intelligrade/state/PluginState.java

@@ -15,11 +15,14 @@
 import java.util.concurrent.ExecutionException;
 import java.util.function.Consumer;
 
+import javax.swing.*;
+
 import com.intellij.openapi.application.ApplicationManager;
 import com.intellij.openapi.diagnostic.Logger;
 import com.intellij.openapi.fileEditor.FileEditorManager;
 import com.intellij.openapi.progress.ProgressIndicator;
 import com.intellij.openapi.progress.Task;
+import com.intellij.openapi.ui.MessageDialogBuilder;
 import com.intellij.ui.jcef.JBCefApp;
 import edu.kit.kastel.sdq.artemis4j.ArtemisClientException;
 import edu.kit.kastel.sdq.artemis4j.ArtemisNetworkException;
@@ -61,6 +64,35 @@ public static PluginState getInstance() {
         return pluginState;
     }
 
+    /**
+     * Logs out while displaying a warning if an assessment is still running
+     */
+    public void logout() {
+        boolean answer = true;
+        // check if confirmation is necessary because assessment is running
+        if (isAssessing()) {
+            answer = MessageDialogBuilder.okCancel(
+                            "Logging out while assessing!",
+                            "Logging out while assessing will discard current changes. Continue?")
+                    .guessWindowAndAsk();
+        }
+        // actually reset state
+        if (answer) {
+            this.resetState();
+
+            // reset state in settings
+            ArtemisCredentialsProvider.getInstance().setJwt(null);
+            ArtemisCredentialsProvider.getInstance().setArtemisPassword(null);
+            ArtemisSettingsState.getInstance().setJwtExpiry(null);
+
+            // reset JBCef cookies iff available
+            if (JBCefApp.isSupported()) {
+                CefUtils.resetCookies();
+            }
+        }
+        this.notifyConnectedListeners();
+    }
+
     public void connect() {
         this.resetState();