Add quick settings tile (#7)

* Add quick settings tile
* Launch MainActivity on QS_TILE_PREFERENCES
* Show repeater password on tile

mobile/src/main/AndroidManifest.xml

@@ -40,6 +40,15 @@
         </service>
         <service android:name=".TetheringService">
         </service>
+        <service
+            android:name=".TileService"
+            android:icon="@drawable/ic_quick_settings_tile_off"
+            android:label="@string/app_name"
+            android:permission="android.permission.BIND_QUICK_SETTINGS_TILE">
+            <intent-filter>
+                <action android:name="android.service.quicksettings.action.QS_TILE" />
+            </intent-filter>
+        </service>
     </application>
 
 </manifest>

mobile/src/main/java/be/mygod/vpnhotspot/TileService.kt

@@ -0,0 +1,84 @@
+package be.mygod.vpnhotspot
+
+import android.content.ComponentName
+import android.content.Context
+import android.content.Intent
+import android.content.ServiceConnection
+import android.graphics.drawable.Icon
+import android.os.Build
+import android.os.IBinder
+import android.service.quicksettings.Tile
+import android.support.annotation.RequiresApi
+import android.support.v4.content.ContextCompat
+import android.support.v4.content.LocalBroadcastManager
+import android.service.quicksettings.TileService as BaseTileService
+
+@RequiresApi(Build.VERSION_CODES.N)
+class TileService : BaseTileService(), ServiceConnection {
+    private var binder: RepeaterService.RepeaterBinder? = null
+
+    val onStatusChangedReceive = broadcastReceiver { _, _ ->
+        updateTile()
+    }
+
+    var qsTileState: Int
+        get() = qsTile.state
+        set(value) {
+            qsTile.state = value
+            when (value) {
+                Tile.STATE_ACTIVE -> {
+                    qsTile.icon = Icon.createWithResource(application,
+                            R.drawable.ic_quick_settings_tile_on)
+                    qsTile.label = "${getString(R.string.repeater_password)}:\n${binder?.service?.password}"
+                }
+                Tile.STATE_INACTIVE -> {
+                    qsTile.icon = Icon.createWithResource(application,
+                            R.drawable.ic_quick_settings_tile_off)
+                    qsTile.label = getString(R.string.app_name)
+                }
+            }
+            qsTile.updateTile()
+        }
+
+    override fun onStartListening() {
+        super.onStartListening()
+        bindService(Intent(this, RepeaterService::class.java), this,
+                Context.BIND_AUTO_CREATE)
+    }
+
+    override fun onStopListening() {
+        super.onStopListening()
+        unbindService(this)
+    }
+
+    override fun onClick() {
+        val binder = binder
+        when (binder?.service?.status) {
+            RepeaterService.Status.ACTIVE -> binder.shutdown()
+            RepeaterService.Status.IDLE -> ContextCompat.startForegroundService(this,
+                    Intent(this, RepeaterService::class.java))
+            else -> {
+            }
+        }
+    }
+
+    override fun onServiceConnected(name: ComponentName?, service: IBinder) {
+        binder = service as RepeaterService.RepeaterBinder
+        updateTile()
+        LocalBroadcastManager.getInstance(this).registerReceiver(onStatusChangedReceive,
+                intentFilter(RepeaterService.ACTION_STATUS_CHANGED))
+    }
+
+    override fun onServiceDisconnected(name: ComponentName?) {
+        binder = null
+        LocalBroadcastManager.getInstance(this).unregisterReceiver(onStatusChangedReceive)
+    }
+
+    fun updateTile() {
+        qsTileState = when (binder?.service?.status) {
+            RepeaterService.Status.ACTIVE -> Tile.STATE_ACTIVE
+            RepeaterService.Status.IDLE -> Tile.STATE_INACTIVE
+            else -> Tile.STATE_UNAVAILABLE
+        }
+    }
+}

mobile/src/main/res/drawable/ic_quick_settings_tile_off.xml

@@ -0,0 +1,13 @@
+<?xml version="1.0" encoding="utf-8"?>
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="24"
+    android:viewportHeight="24">
+
+    <path
+        android:fillColor="#fff"
+        android:pathData="M14.36,10.22 A5.33,5.33,0,1,0,14.36,13.78 L18.22,13.78 L18.22,17.33 L21.78,17.33
+L21.78,13.78 L23.56,13.78 L23.56,10.22 Z M9.36,13.78 A1.78,1.78,0,1,1,11.11,12
+A1.78,1.78,0,0,1,9.33,13.78 Z" />
+</vector>

mobile/src/main/res/drawable/ic_quick_settings_tile_on.xml

@@ -0,0 +1,17 @@
+<?xml version="1.0" encoding="utf-8"?>
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="24"
+    android:viewportHeight="24">
+
+    <path
+        android:fillColor="#fff"
+        android:pathData="M14.36,10.22 A5.33,5.33,0,1,0,14.36,13.78 L18.22,13.78 L18.22,17.33 L21.78,17.33
+L21.78,13.78 L23.56,13.78 L23.56,10.22 Z M9.36,13.78 A1.78,1.78,0,1,1,11.11,12
+A1.78,1.78,0,0,1,9.33,13.78 Z" />
+    <path
+        android:fillColor="#fff"
+        android:pathData="M9.33,3.11 A8.89,8.89,0,0,0,4.88,19.69 L5.77,18.15 A7.11,7.11,0,1,1,12.89,18.15
+L13.78,19.69 A8.89,8.89,0,0,0,9.33,3.11 Z" />
+</vector>