android: Avoid ProgressDialogs in VPN state fragment

Instead we use a ProgressBar directly in the fragment and use the
existing button to cancel the process.

src/frontends/android/app/src/main/java/org/strongswan/android/ui/VpnStateFragment.java

@@ -1,8 +1,8 @@
 /*
- * Copyright (C) 2012-2013 Tobias Brunner
+ * Copyright (C) 2012-2016 Tobias Brunner
  * Copyright (C) 2012 Giuliano Grassi
  * Copyright (C) 2012 Ralf Sager
- * Hochschule fuer Technik Rapperswil
+ * HSR Hochschule fuer Technik Rapperswil
  *
  * This program is free software; you can redistribute it and/or modify it
  * under the terms of the GNU General Public License as published by the
@@ -17,7 +17,6 @@
 
 package org.strongswan.android.ui;
 
-import android.app.ProgressDialog;
 import android.app.Service;
 import android.content.ComponentName;
 import android.content.Context;
@@ -34,6 +33,7 @@ import android.view.View;
 import android.view.View.OnClickListener;
 import android.view.ViewGroup;
 import android.widget.Button;
+import android.widget.ProgressBar;
 import android.widget.TextView;
 
 import org.strongswan.android.R;
@@ -60,9 +60,7 @@ public class VpnStateFragment extends Fragment implements VpnStateListener
 	private int mColorStateError;
 	private int mColorStateSuccess;
 	private Button mActionButton;
-	private ProgressDialog mConnectDialog;
+	private ProgressBar mProgress;
-	private ProgressDialog mDisconnectDialog;
-	private ProgressDialog mProgressDialog;
 	private AlertDialog mErrorDialog;
 	private long mErrorConnectionID;
 	private long mDismissedConnectionID;
@@ -133,8 +131,9 @@ public class VpnStateFragment extends Fragment implements VpnStateListener
 				}
 			}
 		});
-		enableActionButton(false);
+		enableActionButton(null);
 
+		mProgress = (ProgressBar)view.findViewById(R.id.progress);
 		mStateView = (TextView)view.findViewById(R.id.vpn_state);
 		mColorStateBase = mStateView.getCurrentTextColor();
 		mProfileView = (TextView)view.findViewById(R.id.vpn_profile_label);
@@ -163,7 +162,6 @@ public class VpnStateFragment extends Fragment implements VpnStateListener
 			mService.unregisterListener(this);
 		}
 		hideErrorDialog();
-		hideProgressDialog();
 	}
 
 	@Override
@@ -202,33 +200,35 @@ public class VpnStateFragment extends Fragment implements VpnStateListener
 			return;
 		}
 
-		enableActionButton(false);
 		mProfileNameView.setText(name);
 
 		switch (state)
 		{
 			case DISABLED:
 				showProfile(false);
-				hideProgressDialog();
+				mProgress.setVisibility(View.GONE);
+				enableActionButton(null);
 				mStateView.setText(R.string.state_disabled);
 				mStateView.setTextColor(mColorStateBase);
 				break;
 			case CONNECTING:
 				showProfile(true);
-				showConnectDialog(name, gateway);
+				mProgress.setVisibility(View.VISIBLE);
+				enableActionButton(getString(android.R.string.cancel));
 				mStateView.setText(R.string.state_connecting);
 				mStateView.setTextColor(mColorStateBase);
 				break;
 			case CONNECTED:
 				showProfile(true);
-				hideProgressDialog();
+				mProgress.setVisibility(View.GONE);
-				enableActionButton(true);
+				enableActionButton(getString(R.string.disconnect));
 				mStateView.setText(R.string.state_connected);
 				mStateView.setTextColor(mColorStateSuccess);
 				break;
 			case DISCONNECTING:
 				showProfile(true);
-				showDisconnectDialog(name);
+				mProgress.setVisibility(View.VISIBLE);
+				enableActionButton(null);
 				mStateView.setText(R.string.state_disconnecting);
 				mStateView.setTextColor(mColorStateBase);
 				break;
@@ -254,10 +254,10 @@ public class VpnStateFragment extends Fragment implements VpnStateListener
 		{	/* we already show the dialog */
 			return true;
 		}
-		hideProgressDialog();
 		mProfileNameView.setText(name);
 		showProfile(true);
-		enableActionButton(false);
+		mProgress.setVisibility(View.GONE);
+		enableActionButton(null);
 		mStateView.setText(R.string.state_error);
 		mStateView.setTextColor(mColorStateError);
 		switch (error)
@@ -294,20 +294,11 @@ public class VpnStateFragment extends Fragment implements VpnStateListener
 		mProfileNameView.setVisibility(show ? View.VISIBLE : View.GONE);
 	}
 
-	private void enableActionButton(boolean enable)
+	private void enableActionButton(String text)
 	{
-		mActionButton.setEnabled(enable);
+		mActionButton.setText(text);
-		mActionButton.setVisibility(enable ? View.VISIBLE : View.GONE);
+		mActionButton.setEnabled(text != null);
-	}
+		mActionButton.setVisibility(text != null ? View.VISIBLE : View.GONE);
-
-	private void hideProgressDialog()
-	{
-		if (mProgressDialog != null)
-		{
-			mProgressDialog.dismiss();
-			mProgressDialog = null;
-			mDisconnectDialog = mConnectDialog = null;
-		}
 	}
 
 	private void hideErrorDialog()
@@ -329,50 +320,6 @@ public class VpnStateFragment extends Fragment implements VpnStateListener
 		updateView();
 	}
 
-	private void showConnectDialog(String profile, String gateway)
-	{
-		if (mConnectDialog != null)
-		{	/* already showing the dialog */
-			return;
-		}
-		hideProgressDialog();
-		mConnectDialog = new ProgressDialog(getActivity());
-		mConnectDialog.setTitle(String.format(getString(R.string.connecting_title), profile));
-		mConnectDialog.setMessage(String.format(getString(R.string.connecting_message), gateway));
-		mConnectDialog.setIndeterminate(true);
-		mConnectDialog.setCancelable(false);
-		mConnectDialog.setButton(DialogInterface.BUTTON_NEGATIVE,
-								 getString(android.R.string.cancel),
-								 new DialogInterface.OnClickListener()
-								 {
-									 @Override
-									 public void onClick(DialogInterface dialog, int which)
-									 {
-										 if (mService != null)
-										 {
-											 mService.disconnect();
-										 }
-									 }
-								 });
-		mConnectDialog.show();
-		mProgressDialog = mConnectDialog;
-	}
-
-	private void showDisconnectDialog(String profile)
-	{
-		if (mDisconnectDialog != null)
-		{	/* already showing the dialog */
-			return;
-		}
-		hideProgressDialog();
-		mDisconnectDialog = new ProgressDialog(getActivity());
-		mDisconnectDialog.setMessage(getString(R.string.state_disconnecting));
-		mDisconnectDialog.setIndeterminate(true);
-		mDisconnectDialog.setCancelable(false);
-		mDisconnectDialog.show();
-		mProgressDialog = mDisconnectDialog;
-	}
-
 	private void showErrorDialog(int textid)
 	{
 		final List<RemediationInstruction> instructions = mService.getRemediationInstructions();

src/frontends/android/app/src/main/res/layout/vpn_state_fragment.xml

@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <!--
-    Copyright (C) 2012-2013 Tobias Brunner
+    Copyright (C) 2012-2016 Tobias Brunner
     Copyright (C) 2012 Giuliano Grassi
     Copyright (C) 2012 Ralf Sager
     Hochschule fuer Technik Rapperswil
@@ -72,6 +72,17 @@
         </TextView>
     </GridLayout>
 
+    <ProgressBar
+        android:id="@+id/progress"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_marginBottom="10dp"
+        android:layout_marginLeft="20dp"
+        android:layout_marginRight="20dp"
+        android:indeterminate="true"
+        android:visibility="gone"
+        style="@style/Widget.AppCompat.ProgressBar.Horizontal" />
+
     <Button
         android:id="@+id/action"
         android:layout_width="match_parent"

src/frontends/android/app/src/main/res/values-de/strings.xml

@@ -122,8 +122,6 @@
     <string name="error_auth_failed">Benutzerauthentifizierung ist fehlgeschlagen.</string>
     <string name="error_assessment_failed">Sicherheitsassessment ist fehlgeschlagen.</string>
     <string name="error_generic">Unbekannter Fehler während des Verbindens.</string>
-    <string name="connecting_title">Verbinden: %1$s</string>
-    <string name="connecting_message">Verbinde mit \""%1$s\".</string>
     <string name="vpn_connected">VPN verbunden</string>
     <string name="vpn_profile_connected">Dieses VPN Profil ist momentan verbunden!</string>
     <string name="reconnect">Neu verbinden</string>

src/frontends/android/app/src/main/res/values-pl/strings.xml

@@ -122,8 +122,6 @@
     <string name="error_auth_failed">Błąd przy autoryzacji użytkownika</string>
     <string name="error_assessment_failed">Security assessment failed.</string>
     <string name="error_generic">Nieznany błąd w czasie połączenia</string>
-    <string name="connecting_title">Łączenie: %1$s</string>
-    <string name="connecting_message">Tworzenie tunelu VPN z \""%1$s\".</string>
     <string name="vpn_connected">Połączenie z VPN</string>
     <string name="vpn_profile_connected">Ten profil VPN jest obecnie połaczony!</string>
     <string name="reconnect">Połączyć ponownie</string>

src/frontends/android/app/src/main/res/values-ru/strings.xml

@@ -119,8 +119,6 @@
     <string name="error_auth_failed">Ошибка авторизации пользователя.</string>
     <string name="error_assessment_failed">Security assessment failed.</string>
     <string name="error_generic">Неизвестная ошибка.</string>
-    <string name="connecting_title">Подключение: %1$s</string>
-    <string name="connecting_message">Подключение к VPN с \""%1$s\".</string>
     <string name="vpn_connected">Соединение с VPN установлено</string>
     <string name="vpn_profile_connected">Подключение к этому профилю VPN уже существует!</string>
     <string name="reconnect">Переподключить</string>

src/frontends/android/app/src/main/res/values-ua/strings.xml

@@ -120,8 +120,6 @@
     <string name="error_auth_failed">Помилка аутентифікації користувача.</string>
     <string name="error_assessment_failed">Security assessment failed.</string>
     <string name="error_generic">Невідома помилка під час підключення.</string>
-    <string name="connecting_title">Підключення: %1$s</string>
-    <string name="connecting_message">Підключення VPN з \""%1$s\".</string>
     <string name="vpn_connected">VPN підключено</string>
     <string name="vpn_profile_connected">Цей VPN профіль зараз підключений!</string>
     <string name="reconnect">Перепідключитися</string>

src/frontends/android/app/src/main/res/values/strings.xml

@@ -122,8 +122,6 @@
     <string name="error_auth_failed">User authentication failed.</string>
     <string name="error_assessment_failed">Security assessment failed.</string>
     <string name="error_generic">Unspecified failure while connecting.</string>
-    <string name="connecting_title">Connecting: %1$s</string>
-    <string name="connecting_message">Establishing VPN with \""%1$s\".</string>
     <string name="vpn_connected">VPN connected</string>
     <string name="vpn_profile_connected">This VPN profile is currently connected!</string>
     <string name="reconnect">Reconnect</string>