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 long nitActivity = 0;
  29
  30         /*
  31          * Calls to Nit or to the C framework
  32          */
  33
  34         static {
  35                 System.loadLibrary("nit_app");
  36         }
  37
  38         /*
  39          * Callbacks to Nit through C
  40          */
  41         protected native long nitRegisterActivity();
  42         protected native void nitOnCreate(long activity, Bundle savedInstanceState);
  43         protected native void nitOnStart(long activity);
  44         protected native void nitOnRestart(long activity);
  45         protected native void nitOnResume(long activity);
  46         protected native void nitOnPause(long activity);
  47         protected native void nitOnStop(long activity);
  48         protected native void nitOnDestroy(long activity);
  49         protected native void nitOnSaveInstanceState(long activity, Bundle savedInstanceState);
  50         protected native void nitOnRestoreInstanceState(long activity, Bundle savedInstanceState);
  51         protected native boolean nitOnBackPressed(long activity);
  52         protected native boolean nitOnKeyDown(long activity, int keyCode, KeyEvent event);
  53         protected native boolean nitOnKeyLongPress(long activity, int keyCode, KeyEvent event);
  54         protected native boolean nitOnKeyMultiple(long activity, int keyCode, int count, KeyEvent event);
  55         protected native boolean nitOnKeyUp(long activity, int keyCode, KeyEvent event);
  56
  57         /*
  58          * Implementation of OS callbacks
  59          */
  60
  61         @Override
  62         public void onCreate(Bundle savedInstanceState) {
  63                 super.onCreate(savedInstanceState);
  64
  65                 nitActivity = nitRegisterActivity();
  66
  67                 nitOnCreate(nitActivity, savedInstanceState);
  68         }
  69
  70         @Override
  71         protected void onStart() {
  72                 super.onStart();
  73                 nitOnStart(nitActivity);
  74         }
  75
  76         @Override
  77         protected void onRestart() {
  78                 super.onRestart();
  79                 nitOnRestart(nitActivity);
  80         }
  81
  82         @Override
  83         protected void onResume() {
  84                 super.onResume();
  85                 nitOnResume(nitActivity);
  86         }
  87
  88         @Override
  89         protected void onPause() {
  90                 super.onPause();
  91                 nitOnPause(nitActivity);
  92         }
  93
  94         @Override
  95         protected void onStop() {
  96                 super.onStop();
  97                 nitOnStop(nitActivity);
  98         }
  99
 100         @Override
 101         protected void onDestroy() {
 102                 super.onDestroy();
 103                 nitOnDestroy(nitActivity);
 104         }
 105
 106         @Override
 107         public void onSaveInstanceState(Bundle savedInstanceState) {
 108                 super.onSaveInstanceState(savedInstanceState);
 109                 nitOnSaveInstanceState(nitActivity, savedInstanceState);
 110         }
 111
 112         @Override
 113         public void onRestoreInstanceState(Bundle savedInstanceState) {
 114                 super.onRestoreInstanceState(savedInstanceState);
 115                 nitOnRestoreInstanceState(nitActivity, savedInstanceState);
 116         }
 117
 118         @Override
 119         public void onBackPressed() {
 120                 if (!nitOnBackPressed(nitActivity))
 121                         super.onBackPressed();
 122         }
 123
 124         @Override
 125         public boolean onKeyDown(int keyCode, KeyEvent event) {
 126                 return nitOnKeyDown(nitActivity, keyCode, event)
 127                         || super.onKeyDown(keyCode, event);
 128         }
 129
 130         @Override
 131         public boolean onKeyLongPress(int keyCode, KeyEvent event) {
 132                 return nitOnKeyLongPress(nitActivity, keyCode, event)
 133                         || super.onKeyLongPress(keyCode, event);
 134         }
 135
 136         @Override
 137         public boolean onKeyMultiple(int keyCode, int count, KeyEvent event) {
 138                 return nitOnKeyMultiple(nitActivity, keyCode, count, event)
 139                         || super.onKeyMultiple(keyCode, count, event);
 140         }
 141
 142         @Override
 143         public boolean onKeyUp(int keyCode, KeyEvent event) {
 144                 return nitOnKeyUp(nitActivity, keyCode, event)
 145                         || super.onKeyUp(keyCode, event);
 146         }
 147 }