AccountPreferenceBase.java revision 1eb528318cdeb5c5ff1be469435538dad133882b 
1/*
2 * Copyright (C) 2008 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.accounts;
18
19import java.util.ArrayList;
20import java.util.Date;
21import java.util.HashMap;
22import java.util.Map;
23
24import com.android.settings.SettingsPreferenceFragment;
25
26import com.google.android.collect.Maps;
27
28import android.accounts.Account;
29import android.accounts.AccountManager;
30import android.accounts.AuthenticatorDescription;
31import android.accounts.OnAccountsUpdateListener;
32import android.app.Activity;
33import android.content.ContentResolver;
34import android.content.Context;
35import android.content.SyncAdapterType;
36import android.content.SyncStatusObserver;
37import android.content.pm.PackageManager;
38import android.content.res.Resources;
39import android.content.res.Resources.Theme;
40import android.graphics.drawable.Drawable;
41import android.os.Bundle;
42import android.os.Handler;
43import android.preference.PreferenceScreen;
44import android.text.format.DateFormat;
45import android.util.Log;
46import android.view.ContextThemeWrapper;
47
48class AccountPreferenceBase extends SettingsPreferenceFragment
49        implements OnAccountsUpdateListener {
50
51    protected static final String TAG = "AccountSettings";
52    public static final String AUTHORITIES_FILTER_KEY = "authorities";
53    public static final String ACCOUNT_TYPES_FILTER_KEY = "account_types";
54    private final Handler mHandler = new Handler();
55    private Object mStatusChangeListenerHandle;
56    private HashMap<String, ArrayList<String>> mAccountTypeToAuthorities = null;
57    private AuthenticatorHelper mAuthenticatorHelper = new AuthenticatorHelper();
58    private java.text.DateFormat mDateFormat;
59    private java.text.DateFormat mTimeFormat;
60
61    /**
62     * Overload to handle account updates.
63     */
64    public void onAccountsUpdated(Account[] accounts) {
65
66    }
67
68    /**
69     * Overload to handle authenticator description updates
70     */
71    protected void onAuthDescriptionsUpdated() {
72
73    }
74
75    /**
76     * Overload to handle sync state updates.
77     */
78    protected void onSyncStateUpdated() {
79
80    }
81
82    @Override
83    public void onActivityCreated(Bundle savedInstanceState) {
84        super.onActivityCreated(savedInstanceState);
85
86        final Activity activity = getActivity();
87
88        mDateFormat = DateFormat.getDateFormat(activity);
89        mTimeFormat = DateFormat.getTimeFormat(activity);
90    }
91
92    @Override
93    public void onResume() {
94        super.onResume();
95        mStatusChangeListenerHandle = ContentResolver.addStatusChangeListener(
96                ContentResolver.SYNC_OBSERVER_TYPE_ACTIVE
97                | ContentResolver.SYNC_OBSERVER_TYPE_STATUS
98                | ContentResolver.SYNC_OBSERVER_TYPE_SETTINGS,
99                mSyncStatusObserver);
100        onSyncStateUpdated();
101    }
102
103    @Override
104    public void onPause() {
105        super.onPause();
106        ContentResolver.removeStatusChangeListener(mStatusChangeListenerHandle);
107    }
108
109    private SyncStatusObserver mSyncStatusObserver = new SyncStatusObserver() {
110        public void onStatusChanged(int which) {
111            mHandler.post(new Runnable() {
112                public void run() {
113                    onSyncStateUpdated();
114                }
115            });
116        }
117    };
118
119    public ArrayList<String> getAuthoritiesForAccountType(String type) {
120        if (mAccountTypeToAuthorities == null) {
121            mAccountTypeToAuthorities = Maps.newHashMap();
122            SyncAdapterType[] syncAdapters = ContentResolver.getSyncAdapterTypes();
123            for (int i = 0, n = syncAdapters.length; i < n; i++) {
124                final SyncAdapterType sa = syncAdapters[i];
125                ArrayList<String> authorities = mAccountTypeToAuthorities.get(sa.accountType);
126                if (authorities == null) {
127                    authorities = new ArrayList<String>();
128                    mAccountTypeToAuthorities.put(sa.accountType, authorities);
129                }
130                if (Log.isLoggable(TAG, Log.VERBOSE)) {
131                    Log.d(TAG, "added authority " + sa.authority + " to accountType "
132                            + sa.accountType);
133                }
134                authorities.add(sa.authority);
135            }
136        }
137        return mAccountTypeToAuthorities.get(type);
138    }
139
140    /**
141     * Gets the preferences.xml file associated with a particular account type.
142     * @param accountType the type of account
143     * @return a PreferenceScreen inflated from accountPreferenceId.
144     */
145    public PreferenceScreen addPreferencesForType(final String accountType,
146            PreferenceScreen parent) {
147        PreferenceScreen prefs = null;
148        if (mAuthenticatorHelper.containsAccountType(accountType)) {
149            AuthenticatorDescription desc = null;
150            try {
151                desc = mAuthenticatorHelper.getAccountTypeDescription(accountType);
152                if (desc != null && desc.accountPreferencesId != 0) {
153                    // Load the context of the target package, then apply the
154                    // base Settings theme (no references to local resources)
155                    // and create a context theme wrapper so that we get the
156                    // correct text colors. Control colors will still be wrong,
157                    // but there's not much we can do about it since we can't
158                    // reference local color resources.
159                    final Context targetCtx = getActivity().createPackageContext(
160                            desc.packageName, 0);
161                    final Theme baseTheme = getResources().newTheme();
162                    baseTheme.applyStyle(com.android.settings.R.style.Theme_SettingsBase, true);
163                    final Context themedCtx = new ContextThemeWrapper(targetCtx, 0);
164                    themedCtx.getTheme().setTo(baseTheme);
165                    prefs = getPreferenceManager().inflateFromResource(themedCtx,
166                            desc.accountPreferencesId, parent);
167                }
168            } catch (PackageManager.NameNotFoundException e) {
169                Log.w(TAG, "Couldn't load preferences.xml file from " + desc.packageName);
170            } catch (Resources.NotFoundException e) {
171                Log.w(TAG, "Couldn't load preferences.xml file from " + desc.packageName);
172            }
173        }
174        return prefs;
175    }
176
177    public void updateAuthDescriptions() {
178        mAuthenticatorHelper.updateAuthDescriptions(getActivity());
179        onAuthDescriptionsUpdated();
180    }
181
182    protected Drawable getDrawableForType(final String accountType) {
183        return mAuthenticatorHelper.getDrawableForType(getActivity(), accountType);
184    }
185
186    protected CharSequence getLabelForType(final String accountType) {
187        return mAuthenticatorHelper.getLabelForType(getActivity(), accountType);
188    }
189
190    protected String formatSyncDate(Date date) {
191        // TODO: Switch to using DateUtils.formatDateTime
192        return mDateFormat.format(date) + " " + mTimeFormat.format(date);
193    }
194}
195