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      1 /*
      2  * Copyright (C) 2016 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file
      5  * except in compliance with the License. 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 distributed under the
     10  * License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
     11  * KIND, either express or implied. See the License for the specific language governing
     12  * permissions and limitations under the License.
     13  */
     14 
     15 package com.android.systemui.tuner;
     16 
     17 import android.app.AlertDialog;
     18 import android.content.Context;
     19 import android.content.DialogInterface;
     20 import android.content.Intent;
     21 import android.view.KeyEvent;
     22 
     23 import com.android.systemui.R;
     24 
     25 import java.lang.reflect.Field;
     26 import java.lang.reflect.Modifier;
     27 import java.util.ArrayList;
     28 
     29 public class KeycodeSelectionHelper {
     30 
     31     private static final ArrayList<String> mKeycodeStrings = new ArrayList<>();
     32     private static final ArrayList<Integer> mKeycodes = new ArrayList<>();
     33 
     34     private static final String KEYCODE_STRING = "KEYCODE_";
     35 
     36     static {
     37         Class<KeyEvent> cls = KeyEvent.class;
     38         for (Field field : cls.getDeclaredFields()) {
     39             if (Modifier.isStatic(field.getModifiers())
     40                     && field.getName().startsWith(KEYCODE_STRING)
     41                     && field.getType().equals(int.class)) {
     42                 try {
     43                     mKeycodeStrings.add(formatString(field.getName()));
     44                     mKeycodes.add((Integer) field.get(null));
     45                 } catch (IllegalAccessException e) {
     46                 }
     47             }
     48         }
     49     }
     50 
     51     // Force the string into something somewhat readable.
     52     private static String formatString(String name) {
     53         StringBuilder str = new StringBuilder(name.replace(KEYCODE_STRING, "").replace("_", " ")
     54                 .toLowerCase());
     55         for (int i = 0; i < str.length(); i++) {
     56             if (i == 0 || str.charAt(i - 1) == ' ') {
     57                 str.setCharAt(i, Character.toUpperCase(str.charAt(i)));
     58             }
     59         }
     60         return str.toString();
     61     }
     62 
     63     public static void showKeycodeSelect(Context context, final OnSelectionComplete listener) {
     64         new AlertDialog.Builder(context)
     65                 .setTitle(R.string.select_keycode)
     66                 .setItems(mKeycodeStrings.toArray(new String[0]),
     67                         new DialogInterface.OnClickListener() {
     68                     @Override
     69                     public void onClick(DialogInterface dialog, int which) {
     70                         listener.onSelectionComplete(mKeycodes.get(which));
     71                     }
     72                 }).show();
     73     }
     74 
     75     public static Intent getSelectImageIntent() {
     76         return new Intent(Intent.ACTION_OPEN_DOCUMENT).addCategory(Intent.CATEGORY_OPENABLE)
     77                 .setType("image/*");
     78     }
     79 
     80     public interface OnSelectionComplete {
     81         void onSelectionComplete(int code);
     82     }
     83 }
     84