LatinIME/java/src/com/android/inputmethod/latin/SystemBroadcastReceiver.java

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/*
* Copyright (C) 2014 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.android.inputmethod.latin;
import android.app.DownloadManager;
import android.content.BroadcastReceiver;
import android.content.ComponentName;
import android.content.Context;
import android.content.Intent;
import android.content.SharedPreferences;
import android.content.pm.ApplicationInfo;
import android.content.pm.PackageManager;
import android.database.Cursor;
import android.os.Process;
import android.preference.PreferenceManager;
import android.util.Log;
import android.view.inputmethod.InputMethodManager;
import android.view.inputmethod.InputMethodSubtype;
import com.android.inputmethod.dictionarypack.DictionaryPackConstants;
import com.android.inputmethod.dictionarypack.DownloadManagerWrapper;
import com.android.inputmethod.keyboard.KeyboardLayoutSet;
import com.android.inputmethod.latin.settings.Settings;
import com.android.inputmethod.latin.setup.SetupActivity;
import com.android.inputmethod.latin.utils.UncachedInputMethodManagerUtils;
/**
* This class detects the {@link Intent#ACTION_MY_PACKAGE_REPLACED} broadcast intent when this IME
* package has been replaced by a newer version of the same package. This class also detects
* {@link Intent#ACTION_BOOT_COMPLETED} and {@link Intent#ACTION_USER_INITIALIZE} broadcast intent.
*
* If this IME has already been installed in the system image and a new version of this IME has
* been installed, {@link Intent#ACTION_MY_PACKAGE_REPLACED} is received by this receiver and it
* will hide the setup wizard's icon.
*
* If this IME has already been installed in the data partition and a new version of this IME has
* been installed, {@link Intent#ACTION_MY_PACKAGE_REPLACED} is received by this receiver but it
* will not hide the setup wizard's icon, and the icon will appear on the launcher.
*
* If this IME hasn't been installed yet and has been newly installed, no
* {@link Intent#ACTION_MY_PACKAGE_REPLACED} will be sent and the setup wizard's icon will appear
* on the launcher.
*
* When the device has been booted, {@link Intent#ACTION_BOOT_COMPLETED} is received by this
* receiver and it checks whether the setup wizard's icon should be appeared or not on the launcher
* depending on which partition this IME is installed.
*
* When the system locale has been changed, {@link Intent#ACTION_LOCALE_CHANGED} is received by
* this receiver and the {@link KeyboardLayoutSet}'s cache is cleared.
*/
public final class SystemBroadcastReceiver extends BroadcastReceiver {
private static final String TAG = SystemBroadcastReceiver.class.getSimpleName();
@Override
public void onReceive(final Context context, final Intent intent) {
final String intentAction = intent.getAction();
if (Intent.ACTION_MY_PACKAGE_REPLACED.equals(intentAction)) {
Log.i(TAG, "Package has been replaced: " + context.getPackageName());
// Need to restore additional subtypes because system always clears additional
// subtypes when the package is replaced.
RichInputMethodManager.init(context);
final RichInputMethodManager richImm = RichInputMethodManager.getInstance();
final InputMethodSubtype[] additionalSubtypes = richImm.getAdditionalSubtypes();
richImm.setAdditionalInputMethodSubtypes(additionalSubtypes);
toggleAppIcon(context);
// Remove all the previously scheduled downloads. This will also makes sure
// that any erroneously stuck downloads will get cleared. (b/21797386)
removeOldDownloads(context);
// b/21797386
// downloadLatestDictionaries(context);
} else if (Intent.ACTION_BOOT_COMPLETED.equals(intentAction)) {
Log.i(TAG, "Boot has been completed");
toggleAppIcon(context);
} else if (Intent.ACTION_LOCALE_CHANGED.equals(intentAction)) {
Log.i(TAG, "System locale changed");
KeyboardLayoutSet.onSystemLocaleChanged();
}
// The process that hosts this broadcast receiver is invoked and remains alive even after
// 1) the package has been re-installed,
// 2) the device has just booted,
// 3) a new user has been created.
// There is no good reason to keep the process alive if this IME isn't a current IME.
final InputMethodManager imm = (InputMethodManager)
context.getSystemService(Context.INPUT_METHOD_SERVICE);
// Called to check whether this IME has been triggered by the current user or not
final boolean isInputMethodManagerValidForUserOfThisProcess =
!imm.getInputMethodList().isEmpty();
final boolean isCurrentImeOfCurrentUser = isInputMethodManagerValidForUserOfThisProcess
&& UncachedInputMethodManagerUtils.isThisImeCurrent(context, imm);
if (!isCurrentImeOfCurrentUser) {
final int myPid = Process.myPid();
Log.i(TAG, "Killing my process: pid=" + myPid);
Process.killProcess(myPid);
}
}
private void removeOldDownloads(Context context) {
try {
Log.i(TAG, "Removing the old downloads in progress of the previous keyboard version.");
final DownloadManagerWrapper downloadManagerWrapper = new DownloadManagerWrapper(
context);
final DownloadManager.Query q = new DownloadManager.Query();
// Query all the download statuses except the succeeded ones.
q.setFilterByStatus(DownloadManager.STATUS_FAILED
| DownloadManager.STATUS_PAUSED
| DownloadManager.STATUS_PENDING
| DownloadManager.STATUS_RUNNING);
final Cursor c = downloadManagerWrapper.query(q);
if (c != null) {
for (c.moveToFirst(); !c.isAfterLast(); c.moveToNext()) {
final long downloadId = c
.getLong(c.getColumnIndex(DownloadManager.COLUMN_ID));
downloadManagerWrapper.remove(downloadId);
Log.i(TAG, "Removed the download with Id: " + downloadId);
}
c.close();
}
} catch (Exception e) {
Log.e(TAG, "Exception while removing old downloads.");
}
}
private void downloadLatestDictionaries(Context context) {
final Intent updateIntent = new Intent(
DictionaryPackConstants.INIT_AND_UPDATE_NOW_INTENT_ACTION);
context.sendBroadcast(updateIntent);
}
public static void toggleAppIcon(final Context context) {
final int appInfoFlags = context.getApplicationInfo().flags;
final boolean isSystemApp = (appInfoFlags & ApplicationInfo.FLAG_SYSTEM) > 0;
if (Log.isLoggable(TAG, Log.INFO)) {
Log.i(TAG, "toggleAppIcon() : FLAG_SYSTEM = " + isSystemApp);
}
final SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(context);
context.getPackageManager().setComponentEnabledSetting(
new ComponentName(context, SetupActivity.class),
Settings.readShowSetupWizardIcon(prefs, context)
? PackageManager.COMPONENT_ENABLED_STATE_ENABLED
: PackageManager.COMPONENT_ENABLED_STATE_DISABLED,
PackageManager.DONT_KILL_APP);
}
}