lib/android/NitActivity.java

   1 /* This file is part of NIT ( http://www.nitlanguage.org ).
   2  *
   3  * Licensed under the Apache License, Version 2.0 (the "License");
   4  * you may not use this file except in compliance with the License.
   5  * You may obtain a copy of the License at
   6  *
   7  *       http://www.apache.org/licenses/LICENSE-2.0
   8  *
   9  * Unless required by applicable law or agreed to in writing, software
  10  * distributed under the License is distributed on an "AS IS" BASIS,
  11  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  12  * See the License for the specific language governing permissions and
  13  * limitations under the License.
  14  */
  15
  16 package nit.app;
  17
  18 import android.app.Activity;
  19 import android.os.Bundle;
  20 import android.view.KeyEvent;
  21
  22 /*
  23  * Entry point to Nit applications on Android, redirect most calls to Nit
  24  */
  25 public class NitActivity extends Activity {
  26
  27         // Nit activity associated to `this`
  28         protected int nitActivity = 0;
  29
  30         /*
  31          * Calls to Nit or to the C framework
  32          */
  33
  34         static {
  35                 System.loadLibrary("main");
  36         }
  37
  38         /*
  39          * Callbacks to Nit through C
  40          */
  41         protected native int nitRegisterActivity();
  42         protected native void nitOnCreate(int activity, Bundle savedInstanceState);
  43         protected native void nitOnStart(int activity);
  44         protected native void nitOnRestart(int activity);
  45         protected native void nitOnResume(int activity);
  46         protected native void nitOnPause(int activity);
  47         protected native void nitOnStop(int activity);
  48         protected native void nitOnDestroy(int activity);
  49         protected native void nitOnSaveInstanceState(int activity, Bundle savedInstanceState);
  50         protected native void nitOnRestoreInstanceState(int activity, Bundle savedInstanceState);
  51         protected native boolean nitOnKeyDown(int activity, int keyCode, KeyEvent event);
  52         protected native boolean nitOnKeyLongPress(int activity, int keyCode, KeyEvent event);
  53         protected native boolean nitOnKeyMultiple(int activity, int keyCode, int count, KeyEvent event);
  54         protected native boolean nitOnKeyUp(int activity, int keyCode, KeyEvent event);
  55
  56         /*
  57          * Implementation of OS callbacks
  58          */
  59
  60         @Override
  61         public void onCreate(Bundle savedInstanceState) {
  62                 super.onCreate(savedInstanceState);
  63
  64                 nitActivity = nitRegisterActivity();
  65
  66                 nitOnCreate(nitActivity, savedInstanceState);
  67         }
  68
  69         @Override
  70         protected void onStart() {
  71                 super.onStart();
  72                 nitOnStart(nitActivity);
  73         }
  74
  75         @Override
  76         protected void onRestart() {
  77                 super.onRestart();
  78                 nitOnRestart(nitActivity);
  79         }
  80
  81         @Override
  82         protected void onResume() {
  83                 super.onResume();
  84                 nitOnResume(nitActivity);
  85         }
  86
  87         @Override
  88         protected void onPause() {
  89                 super.onPause();
  90                 nitOnPause(nitActivity);
  91         }
  92
  93         @Override
  94         protected void onStop() {
  95                 super.onStop();
  96                 nitOnStop(nitActivity);
  97         }
  98
  99         @Override
 100         protected void onDestroy() {
 101                 super.onDestroy();
 102                 nitOnDestroy(nitActivity);
 103         }
 104
 105         @Override
 106         public void onSaveInstanceState(Bundle savedInstanceState) {
 107                 super.onSaveInstanceState(savedInstanceState);
 108                 nitOnSaveInstanceState(nitActivity, savedInstanceState);
 109         }
 110
 111         @Override
 112         public void onRestoreInstanceState(Bundle savedInstanceState) {
 113                 super.onRestoreInstanceState(savedInstanceState);
 114                 nitOnRestoreInstanceState(nitActivity, savedInstanceState);
 115         }
 116
 117         @Override
 118         public boolean onKeyDown(int keyCode, KeyEvent event) {
 119                 return nitOnKeyDown(nitActivity, keyCode, event)
 120                         || super.onKeyDown(keyCode, event);
 121         }
 122
 123         @Override
 124         public boolean onKeyLongPress(int keyCode, KeyEvent event) {
 125                 return nitOnKeyLongPress(nitActivity, keyCode, event)
 126                         || super.onKeyLongPress(keyCode, event);
 127         }
 128
 129         @Override
 130         public boolean onKeyMultiple(int keyCode, int count, KeyEvent event) {
 131                 return nitOnKeyMultiple(nitActivity, keyCode, count, event)
 132                         || super.onKeyMultiple(keyCode, count, event);
 133         }
 134
 135         @Override
 136         public boolean onKeyUp(int keyCode, KeyEvent event) {
 137                 return nitOnKeyUp(nitActivity, keyCode, event)
 138                         || super.onKeyUp(keyCode, event);
 139         }
 140 }