implement ConnectivityManager using GNetworkMonitor

meson.build

@@ -103,6 +103,7 @@ libtranslationlayer_so = shared_library('translation_layer_main', [
                                                                   	'src/api-impl-jni/graphics/android_graphics_drawable_DrawableContainer.c',
                                                                   	'src/api-impl-jni/location/android_location_LocationManager.c',
                                                                   	'src/api-impl-jni/media/android_media_MediaCodec.c',
+                                                                  	'src/api-impl-jni/net/android_net_ConnectivityManager.c',
                                                                   	'src/api-impl-jni/sensors/android_hardware_SensorManager.c',
                                                                   	'src/api-impl-jni/util.c',
                                                                   	'src/api-impl-jni/views/AndroidLayout.c',

src/api-impl-jni/generated_headers/android_net_ConnectivityManager.h

@@ -0,0 +1,37 @@
+/* DO NOT EDIT THIS FILE - it is machine generated */
+#include <jni.h>
+/* Header for class android_net_ConnectivityManager */
+
+#ifndef _Included_android_net_ConnectivityManager
+#define _Included_android_net_ConnectivityManager
+#ifdef __cplusplus
+extern "C" {
+#endif
+/*
+ * Class:     android_net_ConnectivityManager
+ * Method:    registerNetworkCallback
+ * Signature: (Landroid/net/NetworkRequest;Landroid/net/ConnectivityManager/NetworkCallback;)V
+ */
+JNIEXPORT void JNICALL Java_android_net_ConnectivityManager_registerNetworkCallback
+  (JNIEnv *, jobject, jobject, jobject);
+
+/*
+ * Class:     android_net_ConnectivityManager
+ * Method:    isActiveNetworkMetered
+ * Signature: ()Z
+ */
+JNIEXPORT jboolean JNICALL Java_android_net_ConnectivityManager_isActiveNetworkMetered
+  (JNIEnv *, jobject);
+
+/*
+ * Class:     android_net_ConnectivityManager
+ * Method:    nativeGetNetworkAvailable
+ * Signature: ()Z
+ */
+JNIEXPORT jboolean JNICALL Java_android_net_ConnectivityManager_nativeGetNetworkAvailable
+  (JNIEnv *, jobject);
+
+#ifdef __cplusplus
+}
+#endif
+#endif

src/api-impl-jni/net/android_net_ConnectivityManager.c

@@ -0,0 +1,35 @@
+#include <gio/gio.h>
+
+#include "../defines.h"
+#include "../util.h"
+
+#include "../generated_headers/android_net_ConnectivityManager.h"
+
+JNIEXPORT jboolean JNICALL Java_android_net_ConnectivityManager_isActiveNetworkMetered(JNIEnv *env, jobject this)
+{
+	return g_network_monitor_get_network_metered(g_network_monitor_get_default());
+}
+
+JNIEXPORT jboolean JNICALL Java_android_net_ConnectivityManager_nativeGetNetworkAvailable(JNIEnv *env, jobject this)
+{
+	return g_network_monitor_get_network_available(g_network_monitor_get_default());
+}
+
+static void on_network_changed(GNetworkMonitor* self, gboolean network_available, jobject callback)
+{
+	JNIEnv *env = get_jni_env();
+	jmethodID method;
+	if (network_available) {
+		method = _METHOD(_CLASS(callback), "onAvailable", "(Landroid/net/Network;)V");
+	} else {
+		method = _METHOD(_CLASS(callback), "onLost", "(Landroid/net/Network;)V");
+	}
+	(*env)->CallVoidMethod(env, callback, method, NULL);
+	if ((*env)->ExceptionCheck(env))
+		(*env)->ExceptionDescribe(env);
+}
+
+JNIEXPORT void JNICALL Java_android_net_ConnectivityManager_registerNetworkCallback(JNIEnv *env, jobject this, jobject request, jobject callback)
+{
+	g_signal_connect(g_network_monitor_get_default(), "network-changed", G_CALLBACK(on_network_changed), _REF(callback));
+}

src/api-impl/android/net/ConnectivityManager.java

@@ -1,20 +1,25 @@
 package android.net;
 
+class Network {}
+
 public class ConnectivityManager {
 
-	public class NetworkCallback {}
+	public class NetworkCallback {
+		public void onAvailable(Network network) {}
+		public void onLost(Network network) {}
+	}
 
 	public NetworkInfo getNetworkInfo(int networkType) {
 		return null; // this means the network type is not supported, which should make properly coded apps cease any attempts to use network-related APIs
 	}
 
 	public NetworkInfo getActiveNetworkInfo() {
-		return new NetworkInfo();
+		return new NetworkInfo(nativeGetNetworkAvailable());
 	}
 
-	public void registerNetworkCallback(NetworkRequest request, NetworkCallback callback) {}
+	public native void registerNetworkCallback(NetworkRequest request, NetworkCallback callback);
 
-	public boolean isActiveNetworkMetered() {
-		return false;
-	}
+	public native boolean isActiveNetworkMetered();
+
+	protected native boolean nativeGetNetworkAvailable();
 }

src/api-impl/android/net/NetworkInfo.java

@@ -10,15 +10,21 @@ public class NetworkInfo {
 		UNKNOWN
 	}
 
+	private State state = State.DISCONNECTED;
+
+	public NetworkInfo(boolean available) {
+		state = available ? State.CONNECTED : State.DISCONNECTED;
+	}
+
 	public NetworkInfo.State getState() {
-		return State.DISCONNECTED;
+		return state;
 	}
 
 	public int getType() {
-		return 0x8; // where did you even get a NetworkInfo object... there is no network
+		return 0x8; // TYPE_DUMMY
 	}
 
 	public boolean isConnected() {
-		return true;
+		return state == State.CONNECTED;
 	}
 }