Model radio screen receiver registration in host tests

tools/chatgui-android/router-tests/src/main/kotlin/android/content/Context.kt

@@ -18,6 +18,7 @@ class Context {
         const val AUDIO_SERVICE = "audio"; const val SENSOR_SERVICE = "sensor"; const val VIBRATOR_SERVICE = "vibrator"
         const val POWER_SERVICE = "power"
         const val WIFI_SERVICE = "wifi"
+        const val RECEIVER_NOT_EXPORTED = 4
     }
     val packageName = "com.utun.chat"
     var cacheDir = File(System.getProperty("java.io.tmpdir"), "utun-router-host-cache")
@@ -36,6 +37,9 @@ class Context {
     var subscriptionManager: SubscriptionManager? = SubscriptionManager()
     var telephonyManager: TelephonyManager? = TelephonyManager()
     val configProvider = HostConfigProvider()
+    val receivers = mutableMapOf<BroadcastReceiver, IntentFilter>()
+    fun registerReceiver(receiver: BroadcastReceiver, filter: IntentFilter, flags: Int = 0) { receivers[receiver] = filter }
+    fun unregisterReceiver(receiver: BroadcastReceiver) { check(receivers.remove(receiver) != null) { "receiver not registered" } }
     val applicationContext: Context get() = this
     fun startActivity(intent: Intent) {
         activityAttempts.add(Intent(intent))

tools/chatgui-android/router-tests/src/main/kotlin/android/content/HostIntents.kt

@@ -8,6 +8,8 @@ class Intent() {
         const val FLAG_ACTIVITY_NEW_TASK = 0x10000000
         const val FLAG_ACTIVITY_CLEAR_TOP = 0x04000000
         const val FLAG_ACTIVITY_SINGLE_TOP = 0x20000000
+        const val ACTION_SCREEN_ON = "android.intent.action.SCREEN_ON"
+        const val ACTION_SCREEN_OFF = "android.intent.action.SCREEN_OFF"
     }
     var action: String? = null
     var data: Uri? = null
@@ -28,3 +30,8 @@ class Intent() {
 }
 
 abstract class BroadcastReceiver { abstract fun onReceive(context: Context, intent: Intent) }
+
+class IntentFilter {
+    val actions = mutableSetOf<String>()
+    fun addAction(action: String) { actions.add(action) }
+}