PrivacySettings.java revision 4f33878f208e729cf96b708c57686555d2493129 
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.preference.CheckBoxPreference;
30import android.preference.Preference;
31import android.preference.PreferenceScreen;
32import android.provider.Settings;
33
34/**
35 * Gesture lock pattern settings.
36 */
37public class PrivacySettings extends SettingsPreferenceFragment implements
38        DialogInterface.OnClickListener {
39
40    // Vendor specific
41    private static final String GSETTINGS_PROVIDER = "com.google.settings";
42    private static final String BACKUP_CATEGORY = "backup_category";
43    private static final String BACKUP_DATA = "backup_data";
44    private static final String AUTO_RESTORE = "auto_restore";
45    private static final String CONFIGURE_ACCOUNT = "configure_account";
46    private static final String LOCAL_BACKUP_PASSWORD = "local_backup_password";
47    private IBackupManager mBackupManager;
48    private CheckBoxPreference mBackup;
49    private CheckBoxPreference mAutoRestore;
50    private Dialog mConfirmDialog;
51    private PreferenceScreen mConfigure;
52    private PreferenceScreen mPassword;
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        mPassword = (PreferenceScreen) screen.findPreference(LOCAL_BACKUP_PASSWORD);
70
71        // Vendor specific
72        if (getActivity().getPackageManager().
73                resolveContentProvider(GSETTINGS_PROVIDER, 0) == null) {
74            screen.removePreference(findPreference(BACKUP_CATEGORY));
75        }
76        updateToggles();
77    }
78
79    @Override
80    public void onResume() {
81        super.onResume();
82
83        // Refresh UI
84        updateToggles();
85    }
86
87    @Override
88    public void onStop() {
89        if (mConfirmDialog != null && mConfirmDialog.isShowing()) {
90            mConfirmDialog.dismiss();
91        }
92        mConfirmDialog = null;
93        mDialogType = 0;
94        super.onStop();
95    }
96
97    @Override
98    public boolean onPreferenceTreeClick(PreferenceScreen preferenceScreen,
99            Preference preference) {
100        if (preference == mBackup) {
101            if (!mBackup.isChecked()) {
102                showEraseBackupDialog();
103            } else {
104                setBackupEnabled(true);
105            }
106        } else if (preference == mAutoRestore) {
107            IBackupManager bm = IBackupManager.Stub.asInterface(
108                    ServiceManager.getService(Context.BACKUP_SERVICE));
109            if (bm != null) {
110                // TODO: disable via the backup manager interface
111                boolean curState = mAutoRestore.isChecked();
112                try {
113                    bm.setAutoRestore(curState);
114                } catch (RemoteException e) {
115                    mAutoRestore.setChecked(!curState);
116                }
117            }
118        }
119        return super.onPreferenceTreeClick(preferenceScreen, preference);
120    }
121
122    private void showEraseBackupDialog() {
123        mBackup.setChecked(true);
124
125        mDialogType = DIALOG_ERASE_BACKUP;
126        CharSequence msg = getResources().getText(R.string.backup_erase_dialog_message);
127        // TODO: DialogFragment?
128        mConfirmDialog = new AlertDialog.Builder(getActivity()).setMessage(msg)
129                .setTitle(R.string.backup_erase_dialog_title)
130                .setIcon(android.R.drawable.ic_dialog_alert)
131                .setPositiveButton(android.R.string.ok, this)
132                .setNegativeButton(android.R.string.cancel, this)
133                .show();
134    }
135
136    /*
137     * Creates toggles for each available location provider
138     */
139    private void updateToggles() {
140        ContentResolver res = getContentResolver();
141
142        boolean backupEnabled = false;
143        Intent configIntent = null;
144        String configSummary = null;
145        try {
146            backupEnabled = mBackupManager.isBackupEnabled();
147            String transport = mBackupManager.getCurrentTransport();
148            configIntent = mBackupManager.getConfigurationIntent(transport);
149            configSummary = mBackupManager.getDestinationString(transport);
150        } catch (RemoteException e) {
151            // leave it 'false' and disable the UI; there's no backup manager
152            mBackup.setEnabled(false);
153        }
154        mBackup.setChecked(backupEnabled);
155
156        mAutoRestore.setChecked(Settings.Secure.getInt(res,
157                Settings.Secure.BACKUP_AUTO_RESTORE, 1) == 1);
158        mAutoRestore.setEnabled(backupEnabled);
159
160        final boolean configureEnabled = (configIntent != null) && backupEnabled;
161        mConfigure.setEnabled(configureEnabled);
162        mConfigure.setIntent(configIntent);
163        setConfigureSummary(configSummary);
164
165        updatePasswordSummary();
166}
167
168    private void setConfigureSummary(String summary) {
169        if (summary != null) {
170            mConfigure.setSummary(summary);
171        } else {
172            mConfigure.setSummary(R.string.backup_configure_account_default_summary);
173        }
174    }
175
176    private void updateConfigureSummary() {
177        try {
178            String transport = mBackupManager.getCurrentTransport();
179            String summary = mBackupManager.getDestinationString(transport);
180            setConfigureSummary(summary);
181        } catch (RemoteException e) {
182            // Not much we can do here
183        }
184    }
185
186    private void updatePasswordSummary() {
187        try {
188            if (mBackupManager.hasBackupPassword()) {
189                mPassword.setSummary(R.string.local_backup_password_summary_change);
190            } else {
191                mPassword.setSummary(R.string.local_backup_password_summary_none);
192            }
193        } catch (RemoteException e) {
194            // Not much we can do here
195        }
196    }
197
198    public void onClick(DialogInterface dialog, int which) {
199        if (which == DialogInterface.BUTTON_POSITIVE) {
200            //updateProviders();
201            if (mDialogType == DIALOG_ERASE_BACKUP) {
202                setBackupEnabled(false);
203                updateConfigureSummary();
204            }
205        }
206        mDialogType = 0;
207    }
208
209    /**
210     * Informs the BackupManager of a change in backup state - if backup is disabled,
211     * the data on the server will be erased.
212     * @param enable whether to enable backup
213     */
214    private void setBackupEnabled(boolean enable) {
215        if (mBackupManager != null) {
216            try {
217                mBackupManager.setBackupEnabled(enable);
218            } catch (RemoteException e) {
219                mBackup.setChecked(!enable);
220                mAutoRestore.setEnabled(!enable);
221                return;
222            }
223        }
224        mBackup.setChecked(enable);
225        mAutoRestore.setEnabled(enable);
226        mConfigure.setEnabled(enable);
227    }
228}
229