general purpose and ongoing android notifications

android/AndroidManifest.xml

@@ -1,7 +1,7 @@
 <?xml version="1.0"?>
 <manifest package="ca.openprivacy.cwtch.ui" xmlns:android="http://schemas.android.com/apk/res/android" android:versionName="1.0" android:versionCode="1" android:installLocation="auto">
     <application android:hardwareAccelerated="true" android:name="org.qtproject.qt5.android.bindings.QtApplication" android:label="cwtch" android:icon="@drawable/ic_launcher">
-        <activity android:configChanges="orientation|uiMode|screenLayout|screenSize|smallestScreenSize|layoutDirection|locale|fontScale|keyboard|keyboardHidden|navigation" android:name="org.qtproject.qt5.android.bindings.QtActivity" android:label="cwtch" android:theme="@style/AppTheme" android:screenOrientation="unspecified" android:launchMode="singleTop">
+        <activity android:configChanges="orientation|uiMode|screenLayout|screenSize|smallestScreenSize|layoutDirection|locale|fontScale|keyboard|keyboardHidden|navigation" android:name="ca.openprivacy.cwtch.ui.CwtchActivity" android:label="cwtch" android:theme="@style/AppTheme" android:screenOrientation="unspecified" android:launchMode="singleTop">
             <intent-filter>
                 <action android:name="android.intent.action.MAIN"/>
                 <category android:name="android.intent.category.LAUNCHER"/>
@@ -66,10 +66,10 @@
 
     </application>
 
-    <uses-sdk android:minSdkVersion="16" android:targetSdkVersion="26"/>
+    <uses-sdk android:minSdkVersion="16" /> <!-- android:targetSdkVersion="26"/> -->
     <supports-screens android:largeScreens="true" android:normalScreens="true" android:anyDensity="true" android:smallScreens="true"/>
 
-        <uses-permission android:name="android.permission.INTERNET"/>
+    <uses-permission android:name="android.permission.INTERNET"/>
     <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
     <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>
 

android/src/ca/openprivacy/cwtch/ui/CwtchActivity.java

@@ -0,0 +1,125 @@
+package ca.openprivacy.cwtch.ui;
+
+import android.app.Notification;
+import android.app.NotificationManager;
+import android.app.NotificationChannel;
+import android.content.Context;
+import android.util.Log;
+
+
+import static android.app.Notification.DEFAULT_LIGHTS;
+import static android.app.Notification.DEFAULT_SOUND;
+import static android.app.Notification.DEFAULT_VIBRATE;
+import static android.app.NotificationManager.IMPORTANCE_DEFAULT;
+import static android.app.NotificationManager.IMPORTANCE_LOW;
+import static android.content.Context.NOTIFICATION_SERVICE;
+import static android.content.Intent.FLAG_ACTIVITY_CLEAR_TOP;
+import static android.content.Intent.FLAG_ACTIVITY_NEW_TASK;
+import static android.os.Build.VERSION.SDK_INT;
+import static android.app.Notification.CATEGORY_SERVICE;
+
+
+/*import static android.support.v4.app.NotificationCompat.CATEGORY_MESSAGE;
+import static android.support.v4.app.NotificationCompat.CATEGORY_SERVICE;
+import static android.support.v4.app.NotificationCompat.CATEGORY_SOCIAL;
+import static android.support.v4.app.NotificationCompat.PRIORITY_LOW;
+import static android.support.v4.app.NotificationCompat.PRIORITY_MIN;
+import static android.support.v4.app.NotificationCompat.PRIORITY_DEFAULT;
+import static android.support.v4.app.NotificationCompat.VISIBILITY_SECRET;
+import static android.support.v4.content.ContextCompat.getColor;*/
+
+
+
+
+public class CwtchActivity extends org.qtproject.qt5.android.bindings.QtActivity
+{
+    private static NotificationManager m_notificationManager;
+    private static Notification.Builder m_builder;
+    private static Notification.Builder m_builderOngoing;
+    private static CwtchActivity m_instance;
+
+    private static int PRIORITY_MIN = -2; // From NotificationCompat
+    private static int PRIORITY_DEFAULT = 0; // From NotificationCompat
+
+    private static String NOTIFICATION_CHANNEL_ID = "cwtch_notification_channel";
+
+    private static int ONGOING_NOTIFICATION_ID = 0;
+    private static String ONGOING_NOTIFICATION_ID_NAME = "ongoing";
+
+    private static int CONTENT_NOTIFICATION_ID = 1;
+    private static String CONTENT_NOTIFICATION_ID_NAME = "content";
+
+
+    public CwtchActivity()
+    {
+        m_instance = this;
+    }
+
+    public static void notify(String s)
+    {
+        if (m_notificationManager == null) {
+            m_notificationManager = (NotificationManager)m_instance.getSystemService(Context.NOTIFICATION_SERVICE);
+            createNotificationChannel();
+        }
+
+        if (m_builder == null) {
+            m_builder = new Notification.Builder(m_instance);
+            m_builder.setSmallIcon(R.drawable.ic_launcher);
+            m_builder.setContentTitle("Cwtch");
+            m_builder.setPriority(PRIORITY_DEFAULT);
+
+        }
+
+        m_builder.setContentText(s);
+        m_notificationManager.notify(CONTENT_NOTIFICATION_ID, m_builder.build());
+    }
+
+    public static void ongoingNotify(String s)
+    {
+        if (m_notificationManager == null) {
+            m_notificationManager = (NotificationManager)m_instance.getSystemService(Context.NOTIFICATION_SERVICE);
+            createNotificationChannel();
+        }
+
+        if (m_builderOngoing == null) {
+            m_builderOngoing = new Notification.Builder(m_instance);
+            m_builderOngoing.setSmallIcon(R.drawable.ic_launcher);
+            m_builderOngoing.setContentTitle("Cwtch");
+            m_builderOngoing.setPriority(PRIORITY_MIN);
+
+            m_builderOngoing.setWhen(0); // Don't show the time
+            m_builderOngoing.setOngoing(true);
+            if (SDK_INT >= 21) {
+                        m_builderOngoing.setCategory(CATEGORY_SERVICE);
+                        //m_builder.setVisibility(VISIBILITY_SECRET);
+            }
+
+        }
+
+        m_builderOngoing.setContentText(s);
+        m_notificationManager.notify(ONGOING_NOTIFICATION_ID, m_builderOngoing.build());
+    }
+
+    private static void createNotificationChannel() {
+        // Create the NotificationChannel, but only on API 26+ because
+        // the NotificationChannel class is new and not in the support library
+        if (SDK_INT >= 26) {
+            String description = "Cwtch Ongoing Notification Channel";
+            int importance = NotificationManager.IMPORTANCE_LOW;
+            NotificationChannel channel = new NotificationChannel(NOTIFICATION_CHANNEL_ID, ONGOING_NOTIFICATION_ID_NAME, importance);
+            channel.setDescription(description);
+            // Register the channel with the system; you can't change the importance
+            // or other notification behaviors after this
+            m_notificationManager.createNotificationChannel(channel);
+
+            description = "Cwtch Content Notification Channel";
+            importance = NotificationManager.IMPORTANCE_DEFAULT;
+            channel = new NotificationChannel(NOTIFICATION_CHANNEL_ID, CONTENT_NOTIFICATION_ID_NAME, importance);
+            channel.setDescription(description);
+            // Register the channel with the system; you can't change the importance
+            // or other notification behaviors after this
+            m_notificationManager.createNotificationChannel(channel);
+
+        }
+    }
+}

go/gothings/androidCwtchActivity.go

@@ -0,0 +1,50 @@
+package gothings
+
+import (
+	"github.com/therecipe/qt/androidextras"
+	"github.com/therecipe/qt/core"
+)
+
+type AndroidCwtchActivity struct {
+	core.QObject
+
+	_ func() `constructor:"init"`
+
+	_ string `property:"notification"`
+
+	_ func(string) `slot:"updateAndroidNotification"`
+}
+
+func (c *AndroidCwtchActivity) init() {
+
+	c.createOngoingNotification()
+	c.ConnectNotificationChanged(c.updateAndroidNotification)
+}
+
+func (c *AndroidCwtchActivity) updateAndroidNotification(n string) {
+
+	var err = androidextras.QAndroidJniObject_CallStaticMethodVoid2Caught(
+		"ca/openprivacy/cwtch/ui/CwtchActivity",
+		"notify",
+		"(Ljava/lang/String;)V",
+		n,
+	)
+
+	if err != nil {
+		println(err.Error())
+	}
+}
+
+func (c *AndroidCwtchActivity) createOngoingNotification() {
+
+	var err = androidextras.QAndroidJniObject_CallStaticMethodVoid2Caught(
+		"ca/openprivacy/cwtch/ui/CwtchActivity",
+		"ongoingNotify",
+		"(Ljava/lang/String;)V",
+		"Cwtch is running",
+	)
+
+	if err != nil {
+		println(err.Error())
+	}
+}

go/the/globals.go

@@ -3,15 +3,17 @@ package the
 import (
 	"cwtch.im/cwtch/app"
 	libPeer "cwtch.im/cwtch/peer"
+	"git.openprivacy.ca/openprivacy/libricochet-go/connectivity"
 )
 
 var CwtchApp app.Application
+var ACN connectivity.ACN
 var Peer libPeer.CwtchPeer
 var CwtchDir string
 
 type AckId struct {
-	ID string
-	Ack bool
+	ID    string
+	Ack   bool
 	Error bool
 }
 

main.go

@@ -111,8 +111,21 @@ func main() {
 		gcd.SetThemeScale(1.0)
 	}
 	engine.RootContext().SetContextProperty("gcd", gcd)
-	engine.Load(qmlSource)
 
+	var androidCwtchActivity = gothings.NewAndroidCwtchActivity(nil)
+	engine.RootContext().SetContextProperty("androidCwtchActivity", androidCwtchActivity)
+
+	engine.Load(qmlSource)
+	the.ACN = nil
+	go loadNetworkingAndFiles(gcd)
+	app.Exec()
+
+	if the.ACN != nil {
+		the.ACN.Close()
+	}
+}
+
+func loadNetworkingAndFiles(gcd *gothings.GrandCentralDispatcher) {
 	if os.Getenv("CWTCH_FOLDER") != "" {
 		the.CwtchDir = os.Getenv("CWTCH_FOLDER")
 	} else if runtime.GOOS == "android" {
@@ -145,17 +158,17 @@ func main() {
 			torpath = path.Join(dir, "tor")
 		}
 	}
-
-	acn, err := connectivity.StartTor(the.CwtchDir, torpath)
+	var err error
+	the.ACN, err = connectivity.StartTor(the.CwtchDir, torpath)
 	if err != nil {
 		log.Errorf("Could not start Tor: %v", err)
 		os.Exit(1)
 	}
 
 	// these are long-lived pollers/listeners for incoming messages and status changes
-	loadCwtchData(gcd, acn)
+	loadCwtchData(gcd, the.ACN)
 	go characters.IncomingListener(gcd.UIState.AddMessage, gcd.UIState.AddSendMessageError)
-	go characters.TorStatusPoller(gcd.TorStatus, acn)
+	go characters.TorStatusPoller(gcd.TorStatus, the.ACN)
 	go characters.PresencePoller(gcd.UIState.GetContact, gcd.UIState.AddContact, gcd.UIState.UpdateContact)
 	go characters.GroupPoller(gcd.UIState.GetContact, gcd.UIState.UpdateContact)
 
@@ -165,9 +178,6 @@ func main() {
 	if exists {
 		gcd.SetLocale_helper(locale)
 	}
-
-	app.Exec()
-	acn.Close()
 }
 
 // this is mostly going to get factored out when we add profile support

qml/overlays/ChatOverlay.qml

@@ -77,6 +77,9 @@ ColumnLayout {
 
                 // If the window is out of focus, alert the user (makes taskbar light up)
                 windowItem.alert(0)
+                if (gcd.os == "android" && windowItem.activeFocusItem == null) {
+                    androidCwtchActivity.notification = "New Content"
+                }
             }
 
             onPrependMessage: function(handle, from, displayName, message, image, mid, fromMe, ts, ackd, error) {