PrivacySettings.java revision 2c53933e8d35ba50d0791a29e46fa3156e9cab7c 
1/*
2 * Copyright (C) 2009 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.AlertDialog;
20import android.app.Dialog;
21import android.app.backup.IBackupManager;
22import android.content.ContentResolver;
23import android.content.Context;
24import android.content.DialogInterface;
25import android.content.Intent;
26import android.os.Bundle;
27import android.os.RemoteException;
28import android.os.ServiceManager;
29import android.os.UserManager;
30import android.preference.CheckBoxPreference;
31import android.preference.Preference;
32import android.preference.PreferenceScreen;
33import android.provider.Settings;
34
35/**
36 * Gesture lock pattern settings.
37 */
38public class PrivacySettings extends SettingsPreferenceFragment implements
39        DialogInterface.OnClickListener {
40
41    // Vendor specific
42    private static final String GSETTINGS_PROVIDER = "com.google.settings";
43    private static final String BACKUP_CATEGORY = "backup_category";
44    private static final String BACKUP_DATA = "backup_data";
45    private static final String AUTO_RESTORE = "auto_restore";
46    private static final String CONFIGURE_ACCOUNT = "configure_account";
47    private static final String PERSONAL_DATA_CATEGORY = "personal_data_category";
48    private IBackupManager mBackupManager;
49    private CheckBoxPreference mBackup;
50    private CheckBoxPreference mAutoRestore;
51    private Dialog mConfirmDialog;
52    private PreferenceScreen mConfigure;
53
54    private static final int DIALOG_ERASE_BACKUP = 2;
55    private int mDialogType;
56
57    @Override
58    public void onCreate(Bundle savedInstanceState) {
59        super.onCreate(savedInstanceState);
60        addPreferencesFromResource(R.xml.privacy_settings);
61        final PreferenceScreen screen = getPreferenceScreen();
62
63        mBackupManager = IBackupManager.Stub.asInterface(
64                ServiceManager.getService(Context.BACKUP_SERVICE));
65
66        mBackup = (CheckBoxPreference) screen.findPreference(BACKUP_DATA);
67        mAutoRestore = (CheckBoxPreference) screen.findPreference(AUTO_RESTORE);
68        mConfigure = (PreferenceScreen) screen.findPreference(CONFIGURE_ACCOUNT);
69
70        if (UserManager.get(getActivity()).hasUserRestriction(
71                UserManager.DISALLOW_FACTORY_RESET)) {
72            screen.removePreference(findPreference(PERSONAL_DATA_CATEGORY));
73        }
74
75        // Vendor specific
76        if (getActivity().getPackageManager().
77                resolveContentProvider(GSETTINGS_PROVIDER, 0) == null) {
78            screen.removePreference(findPreference(BACKUP_CATEGORY));
79        }
80        updateToggles();
81    }
82
83    @Override
84    public void onResume() {
85        super.onResume();
86
87        // Refresh UI
88        updateToggles();
89    }
90
91    @Override
92    public void onStop() {
93        if (mConfirmDialog != null && mConfirmDialog.isShowing()) {
94            mConfirmDialog.dismiss();
95        }
96        mConfirmDialog = null;
97        mDialogType = 0;
98        super.onStop();
99    }
100
101    @Override
102    public boolean onPreferenceTreeClick(PreferenceScreen preferenceScreen,
103            Preference preference) {
104        if (preference == mBackup) {
105            if (!mBackup.isChecked()) {
106                showEraseBackupDialog();
107            } else {
108                setBackupEnabled(true);
109            }
110        } else if (preference == mAutoRestore) {
111            boolean curState = mAutoRestore.isChecked();
112            try {
113                mBackupManager.setAutoRestore(curState);
114            } catch (RemoteException e) {
115                mAutoRestore.setChecked(!curState);
116            }
117        }
118        return super.onPreferenceTreeClick(preferenceScreen, preference);
119    }
120
121    private void showEraseBackupDialog() {
122        mBackup.setChecked(true);
123
124        mDialogType = DIALOG_ERASE_BACKUP;
125        CharSequence msg = getResources().getText(R.string.backup_erase_dialog_message);
126        // TODO: DialogFragment?
127        mConfirmDialog = new AlertDialog.Builder(getActivity()).setMessage(msg)
128                .setTitle(R.string.backup_erase_dialog_title)
129                .setPositiveButton(android.R.string.ok, this)
130                .setNegativeButton(android.R.string.cancel, this)
131                .show();
132    }
133
134    /*
135     * Creates toggles for each available location provider
136     */
137    private void updateToggles() {
138        ContentResolver res = getContentResolver();
139
140        boolean backupEnabled = false;
141        Intent configIntent = null;
142        String configSummary = null;
143        try {
144            backupEnabled = mBackupManager.isBackupEnabled();
145            String transport = mBackupManager.getCurrentTransport();
146            configIntent = mBackupManager.getConfigurationIntent(transport);
147            configSummary = mBackupManager.getDestinationString(transport);
148        } catch (RemoteException e) {
149            // leave it 'false' and disable the UI; there's no backup manager
150            mBackup.setEnabled(false);
151        }
152        mBackup.setChecked(backupEnabled);
153
154        mAutoRestore.setChecked(Settings.Secure.getInt(res,
155                Settings.Secure.BACKUP_AUTO_RESTORE, 1) == 1);
156        mAutoRestore.setEnabled(backupEnabled);
157
158        final boolean configureEnabled = (configIntent != null) && backupEnabled;
159        mConfigure.setEnabled(configureEnabled);
160        mConfigure.setIntent(configIntent);
161        setConfigureSummary(configSummary);
162}
163
164    private void setConfigureSummary(String summary) {
165        if (summary != null) {
166            mConfigure.setSummary(summary);
167        } else {
168            mConfigure.setSummary(R.string.backup_configure_account_default_summary);
169        }
170    }
171
172    private void updateConfigureSummary() {
173        try {
174            String transport = mBackupManager.getCurrentTransport();
175            String summary = mBackupManager.getDestinationString(transport);
176            setConfigureSummary(summary);
177        } catch (RemoteException e) {
178            // Not much we can do here
179        }
180    }
181
182    public void onClick(DialogInterface dialog, int which) {
183        if (which == DialogInterface.BUTTON_POSITIVE) {
184            //updateProviders();
185            if (mDialogType == DIALOG_ERASE_BACKUP) {
186                setBackupEnabled(false);
187                updateConfigureSummary();
188            }
189        }
190        mDialogType = 0;
191    }
192
193    /**
194     * Informs the BackupManager of a change in backup state - if backup is disabled,
195     * the data on the server will be erased.
196     * @param enable whether to enable backup
197     */
198    private void setBackupEnabled(boolean enable) {
199        if (mBackupManager != null) {
200            try {
201                mBackupManager.setBackupEnabled(enable);
202            } catch (RemoteException e) {
203                mBackup.setChecked(!enable);
204                mAutoRestore.setEnabled(!enable);
205                return;
206            }
207        }
208        mBackup.setChecked(enable);
209        mAutoRestore.setEnabled(enable);
210        mConfigure.setEnabled(enable);
211    }
212
213    @Override
214    protected int getHelpResource() {
215        return R.string.help_url_backup_reset;
216    }
217}
218