lib/android: intro our very own NitActivity

[nit.git] / lib / android / NitActivity.java

diff --git a/lib/android/NitActivity.java b/lib/android/NitActivity.java
new file mode 100644 (file)
index 0000000..3744988
--- /dev/null
+++ b/lib/android/NitActivity.java
@@ -0,0 +1,111 @@
+/* This file is part of NIT ( http://www.nitlanguage.org ).
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package nit.app;
+
+import android.app.Activity;
+import android.os.Bundle;
+
+/*
+ * Entry point to Nit applications on Android, redirect most calls to Nit
+ */
+public class NitActivity extends Activity {
+
+       // Nit activity associated to `this`
+       protected int nitActivity = 0;
+
+       /*
+        * Calls to Nit or to the C framework
+        */
+
+       static {
+               System.loadLibrary("main");
+       }
+
+       /*
+        * Callbacks to Nit through C
+        */
+       protected native int nitRegisterActivity();
+       protected native void nitOnCreate(int activity, Bundle savedInstanceState);
+       protected native void nitOnStart(int activity);
+       protected native void nitOnRestart(int activity);
+       protected native void nitOnResume(int activity);
+       protected native void nitOnPause(int activity);
+       protected native void nitOnStop(int activity);
+       protected native void nitOnDestroy(int activity);
+       protected native void nitOnSaveInstanceState(int activity, Bundle savedInstanceState);
+       protected native void nitOnRestoreInstanceState(int activity, Bundle savedInstanceState);
+
+       /*
+        * Implementation of OS callbacks
+        */
+
+       @Override
+       public void onCreate(Bundle savedInstanceState) {
+               super.onCreate(savedInstanceState);
+
+               nitActivity = nitRegisterActivity();
+
+               nitOnCreate(nitActivity, savedInstanceState);
+       }
+
+       @Override
+       protected void onStart() {
+               super.onStart();
+               nitOnStart(nitActivity);
+       }
+
+       @Override
+       protected void onRestart() {
+               super.onRestart();
+               nitOnRestart(nitActivity);
+       }
+
+       @Override
+       protected void onResume() {
+               super.onResume();
+               nitOnResume(nitActivity);
+       }
+
+       @Override
+       protected void onPause() {
+               super.onPause();
+               nitOnPause(nitActivity);
+       }
+
+       @Override
+       protected void onStop() {
+               super.onStop();
+               nitOnStop(nitActivity);
+       }
+
+       @Override
+       protected void onDestroy() {
+               super.onDestroy();
+               nitOnDestroy(nitActivity);
+       }
+
+       @Override
+       public void onSaveInstanceState(Bundle savedInstanceState) {
+               super.onSaveInstanceState(savedInstanceState);
+               nitOnSaveInstanceState(nitActivity, savedInstanceState);
+       }
+
+       @Override
+       public void onRestoreInstanceState(Bundle savedInstanceState) {
+               super.onRestoreInstanceState(savedInstanceState);
+               nitOnRestoreInstanceState(nitActivity, savedInstanceState);
+       }
+}