2 files changed, 95 insertions, 0 deletions
diff --git a/src/main/java/org/traccar/web/client/database/GlobalDatabaseService.java b/src/main/java/org/traccar/web/client/database/GlobalDatabaseService.java
new file mode 100644
index 00000000..138fa48b
--- /dev/null
+++ b/src/main/java/org/traccar/web/client/database/GlobalDatabaseService.java
@@ -0,0 +1,13 @@
+package org.traccar.web.client.database;
+
+import com.google.gwt.core.client.GWT;
+
+public class GlobalDatabaseService {
+
+    private static final DatabaseServiceAsync databaseService = GWT.create(DatabaseService.class);
+
+    public static DatabaseServiceAsync getInstance() {
+        return databaseService;
+    }
+
+}
diff --git a/src/main/java/org/traccar/web/client/login/LoginController.java b/src/main/java/org/traccar/web/client/login/LoginController.java
new file mode 100644
index 00000000..42d68899
--- /dev/null
+++ b/src/main/java/org/traccar/web/client/login/LoginController.java
@@ -0,0 +1,82 @@
+package org.traccar.web.client.login;
+
+import com.google.gwt.user.client.rpc.AsyncCallback;
+import com.smartgwt.client.util.SC;
+import org.traccar.web.client.database.GlobalDatabaseService;
+
+public class LoginController implements LoginDialog.LoginHandler {
+
+    private LoginDialog dialog;
+
+    public interface LoginHandler {
+        public void onLogin();
+    }
+
+    private LoginHandler loginHandler;
+
+    public void login(LoginHandler loginHandler) {
+        this.loginHandler = loginHandler;
+
+        dialog = new LoginDialog();
+        dialog.setLoginHandler(this);
+        dialog.draw();
+        dialog.centerInPage();
+    }
+
+    private boolean validate(String login, String password) {
+        if (login == null || login.isEmpty() || password == null || password.isEmpty()) {
+            SC.warn("Login and password fields must not be blank");
+            return false;
+        }
+        return true;
+    }
+
+    private static abstract class AsyncCallbackHandler implements AsyncCallback<Boolean> {
+        @Override
+        public void onFailure(Throwable caught) {
+            SC.warn("Remote procedure call error");
+        }
+    }
+
+    private final AsyncCallback<Boolean> loginCallback = new AsyncCallbackHandler() {
+        @Override
+        public void onSuccess(Boolean result) {
+            if (result) {
+                if (loginHandler != null) {
+                    dialog.destroy();
+                    loginHandler.onLogin();
+                }
+            } else {
+                SC.warn("Invalid login or password");
+            }
+        }
+    };
+
+    @Override
+    public void onLogin(String login, String password) {
+        if (validate(login, password)) {
+            GlobalDatabaseService.getInstance().authenticate(login, password, loginCallback);
+        }
+    }
+
+    private final AsyncCallback<Boolean> registerCallback = new AsyncCallbackHandler() {
+        @Override
+        public void onSuccess(Boolean result) {
+            if (result) {
+                if (loginHandler != null) {
+                    dialog.destroy();
+                    loginHandler.onLogin();
+                }
+            } else {
+                SC.warn("Registration failed");
+            }
+        }
+    };
+
+    @Override
+    public void onRegister(String login, String password) {
+        if (validate(login, password)) {
+            GlobalDatabaseService.getInstance().register(login, password, registerCallback);
+        }
+    }
+}