MailActivityEmail.java revision c5afb16430a145f20d7c887e45f47b38687054da 
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.email2.ui;
18
19import android.content.ComponentName;
20import android.content.Context;
21import android.content.Intent;
22import android.content.pm.PackageManager;
23import android.database.Cursor;
24import android.os.Bundle;
25import android.util.Log;
26
27import com.android.email.NotificationController;
28import com.android.email.Preferences;
29import com.android.email.R;
30import com.android.email.service.AttachmentDownloadService;
31import com.android.email.service.EmailServiceUtils;
32import com.android.email.service.MailService;
33import com.android.emailcommon.Logging;
34import com.android.emailcommon.TempDirectory;
35import com.android.emailcommon.provider.Account;
36import com.android.emailcommon.service.EmailServiceProxy;
37import com.android.emailcommon.utility.EmailAsyncTask;
38import com.android.emailcommon.utility.Utility;
39
40public class MailActivityEmail extends com.android.mail.ui.MailActivity {
41    /**
42     * If this is enabled there will be additional logging information sent to
43     * Log.d, including protocol dumps.
44     *
45     * This should only be used for logs that are useful for debbuging user problems,
46     * not for internal/development logs.
47     *
48     * This can be enabled by typing "debug" in the AccountFolderList activity.
49     * Changing the value to 'true' here will likely have no effect at all!
50     *
51     * TODO: rename this to sUserDebug, and rename LOGD below to DEBUG.
52     */
53    public static boolean DEBUG;
54
55    // Exchange debugging flags (passed to Exchange, when available, via EmailServiceProxy)
56    public static boolean DEBUG_EXCHANGE;
57    public static boolean DEBUG_VERBOSE;
58    public static boolean DEBUG_FILE;
59
60    /**
61     * If true, inhibit hardware graphics acceleration in UI (for a/b testing)
62     */
63    public static boolean sDebugInhibitGraphicsAcceleration = false;
64
65    /**
66     * Specifies how many messages will be shown in a folder by default. This number is set
67     * on each new folder and can be incremented with "Load more messages..." by the
68     * VISIBLE_LIMIT_INCREMENT
69     */
70    public static final int VISIBLE_LIMIT_DEFAULT = 25;
71
72    /**
73     * Number of additional messages to load when a user selects "Load more messages..."
74     */
75    public static final int VISIBLE_LIMIT_INCREMENT = 25;
76
77    /**
78     * This is used to force stacked UI to return to the "welcome" screen any time we change
79     * the accounts list (e.g. deleting accounts in the Account Manager preferences.)
80     */
81    private static boolean sAccountsChangedNotification = false;
82
83    private static String sMessageDecodeErrorString;
84
85    private static Thread sUiThread;
86
87    /**
88     * Asynchronous version of {@link #setServicesEnabledSync(Context)}.  Use when calling from
89     * UI thread (or lifecycle entry points.)
90     *
91     * @param context
92     */
93    public static void setServicesEnabledAsync(final Context context) {
94        EmailAsyncTask.runAsyncParallel(new Runnable() {
95            @Override
96            public void run() {
97                setServicesEnabledSync(context);
98            }
99        });
100    }
101
102    /**
103     * Called throughout the application when the number of accounts has changed. This method
104     * enables or disables the Compose activity, the boot receiver and the service based on
105     * whether any accounts are configured.
106     *
107     * Blocking call - do not call from UI/lifecycle threads.
108     *
109     * @param context
110     * @return true if there are any accounts configured.
111     */
112    public static boolean setServicesEnabledSync(Context context) {
113        Cursor c = null;
114        try {
115            c = context.getContentResolver().query(
116                    Account.CONTENT_URI,
117                    Account.ID_PROJECTION,
118                    null, null, null);
119            boolean enable = c.getCount() > 0;
120            setServicesEnabled(context, enable);
121            return enable;
122        } finally {
123            if (c != null) {
124                c.close();
125            }
126        }
127    }
128
129    private static void setServicesEnabled(Context context, boolean enabled) {
130        PackageManager pm = context.getPackageManager();
131        pm.setComponentEnabledSetting(
132                new ComponentName(context, MailService.class),
133                enabled ? PackageManager.COMPONENT_ENABLED_STATE_ENABLED :
134                    PackageManager.COMPONENT_ENABLED_STATE_DISABLED,
135                PackageManager.DONT_KILL_APP);
136        pm.setComponentEnabledSetting(
137                new ComponentName(context, AttachmentDownloadService.class),
138                enabled ? PackageManager.COMPONENT_ENABLED_STATE_ENABLED :
139                    PackageManager.COMPONENT_ENABLED_STATE_DISABLED,
140                PackageManager.DONT_KILL_APP);
141
142        // Start/stop the various services depending on whether there are any accounts
143        startOrStopService(enabled, context, new Intent(context, AttachmentDownloadService.class));
144        NotificationController.getInstance(context).watchForMessages(enabled);
145    }
146
147    /**
148     * Starts or stops the service as necessary.
149     * @param enabled If {@code true}, the service will be started. Otherwise, it will be stopped.
150     * @param context The context to manage the service with.
151     * @param intent The intent of the service to be managed.
152     */
153    private static void startOrStopService(boolean enabled, Context context, Intent intent) {
154        if (enabled) {
155            context.startService(intent);
156        } else {
157            context.stopService(intent);
158        }
159    }
160
161    @Override
162    public void onCreate(Bundle bundle) {
163        super.onCreate(bundle);
164        sUiThread = Thread.currentThread();
165        Preferences prefs = Preferences.getPreferences(this);
166        DEBUG = prefs.getEnableDebugLogging();
167        sDebugInhibitGraphicsAcceleration = prefs.getInhibitGraphicsAcceleration();
168        enableStrictMode(prefs.getEnableStrictMode());
169        TempDirectory.setTempDirectory(this);
170
171        // Enable logging in the EAS service, so it starts up as early as possible.
172        updateLoggingFlags(this);
173
174        // Get a helper string used deep inside message decoders (which don't have context)
175        sMessageDecodeErrorString = getString(R.string.message_decode_error);
176
177        // Make sure all required services are running when the app is started (can prevent
178        // issues after an adb sync/install)
179        setServicesEnabledAsync(this);
180    }
181
182    /**
183     * Load enabled debug flags from the preferences and update the EAS debug flag.
184     */
185    public static void updateLoggingFlags(Context context) {
186        Preferences prefs = Preferences.getPreferences(context);
187        int debugLogging = prefs.getEnableDebugLogging() ? EmailServiceProxy.DEBUG_BIT : 0;
188        int verboseLogging =
189            prefs.getEnableExchangeLogging() ? EmailServiceProxy.DEBUG_VERBOSE_BIT : 0;
190        int fileLogging =
191            prefs.getEnableExchangeFileLogging() ? EmailServiceProxy.DEBUG_FILE_BIT : 0;
192        int enableStrictMode =
193            prefs.getEnableStrictMode() ? EmailServiceProxy.DEBUG_ENABLE_STRICT_MODE : 0;
194        int debugBits = debugLogging | verboseLogging | fileLogging | enableStrictMode;
195        EmailServiceUtils.setRemoteServicesLogging(context, debugBits);
196     }
197
198    /**
199     * Internal, utility method for logging.
200     * The calls to log() must be guarded with "if (Email.LOGD)" for performance reasons.
201     */
202    public static void log(String message) {
203        Log.d(Logging.LOG_TAG, message);
204    }
205
206    /**
207     * Called by the accounts reconciler to notify that accounts have changed, or by  "Welcome"
208     * to clear the flag.
209     * @param setFlag true to set the notification flag, false to clear it
210     */
211    public static synchronized void setNotifyUiAccountsChanged(boolean setFlag) {
212        sAccountsChangedNotification = setFlag;
213    }
214
215    /**
216     * Called from activity onResume() functions to check for an accounts-changed condition, at
217     * which point they should finish() and jump to the Welcome activity.
218     */
219    public static synchronized boolean getNotifyUiAccountsChanged() {
220        return sAccountsChangedNotification;
221    }
222
223    public static void warnIfUiThread() {
224        if (Thread.currentThread().equals(sUiThread)) {
225            Log.w(Logging.LOG_TAG, "Method called on the UI thread", new Exception("STACK TRACE"));
226        }
227    }
228
229    /**
230     * Retrieve a simple string that can be used when message decoders encounter bad data.
231     * This is provided here because the protocol decoders typically don't have mContext.
232     */
233    public static String getMessageDecodeErrorString() {
234        return sMessageDecodeErrorString != null ? sMessageDecodeErrorString : "";
235    }
236
237    public static void enableStrictMode(boolean enabled) {
238        Utility.enableStrictMode(enabled);
239    }
240}
241