ChooseLockSettingsHelper.java revision 47d380f1e6c823cea444004cb799d4c791145cc6 
1/*
2 * Copyright (C) 2010 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17package com.android.settings;
18
19import android.app.Activity;
20import android.content.Intent;
21
22import com.android.internal.widget.LockPatternUtils;
23
24public class ChooseLockSettingsHelper {
25    private LockPatternUtils mLockPatternUtils;
26    private Activity mActivity;
27
28    public ChooseLockSettingsHelper(Activity activity) {
29        mActivity = activity;
30        mLockPatternUtils = new LockPatternUtils(activity);
31    }
32
33    public LockPatternUtils utils() {
34        return mLockPatternUtils;
35    }
36
37    /**
38     * If a pattern, password or PIN exists, prompt the user before allowing them to change it.
39     * @return true if one exists and we launched an activity to confirm it
40     * @see #onActivityResult(int, int, android.content.Intent)
41     */
42    protected boolean launchConfirmationActivity(int request) {
43        boolean launched = false;
44        switch (mLockPatternUtils.getPasswordMode()) {
45            case LockPatternUtils.MODE_PATTERN:
46                launched = confirmPattern(request);
47                break;
48            case LockPatternUtils.MODE_PIN:
49            case LockPatternUtils.MODE_PASSWORD:
50                launched = confirmPassword(request);
51                break;
52        }
53        return launched;
54    }
55
56    /**
57     * Launch screen to confirm the existing lock pattern.
58     * @see #onActivityResult(int, int, android.content.Intent)
59     * @return true if we launched an activity to confirm pattern
60     */
61    private boolean confirmPattern(int request) {
62        if (!mLockPatternUtils.isLockPatternEnabled() || !mLockPatternUtils.savedPatternExists()) {
63            return false;
64        }
65        final Intent intent = new Intent();
66        intent.setClassName("com.android.settings", "com.android.settings.ConfirmLockPattern");
67        mActivity.startActivityForResult(intent, request);
68        return true;
69    }
70
71    /**
72     * Launch screen to confirm the existing lock password.
73     * @see #onActivityResult(int, int, android.content.Intent)
74     * @return true if we launched an activity to confirm password
75     */
76    private boolean confirmPassword(int request) {
77        if (!mLockPatternUtils.isLockPasswordEnabled()) return false;
78        final Intent intent = new Intent();
79        intent.setClassName("com.android.settings", "com.android.settings.ConfirmLockPassword");
80        mActivity.startActivityForResult(intent, request);
81        return true;
82    }
83
84
85}
86