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
15package com.android.systemui.tuner;
16
17import android.app.AlertDialog;
18import android.content.Context;
19import android.content.DialogInterface;
20import android.content.Intent;
21import android.view.KeyEvent;
22
23import com.android.systemui.R;
24
25import java.lang.reflect.Field;
26import java.lang.reflect.Modifier;
27import java.util.ArrayList;
28
29public 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