SystemBroadcastReceiver.java revision f2eadbb497a172f602e49226a7f891d9e9097760 
1/*
2 * Copyright (C) 2014 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.inputmethod.latin;
18
19import android.content.BroadcastReceiver;
20import android.content.Context;
21import android.content.Intent;
22import android.os.Process;
23import android.util.Log;
24import android.view.inputmethod.InputMethodManager;
25import android.view.inputmethod.InputMethodSubtype;
26
27import com.android.inputmethod.compat.IntentCompatUtils;
28import com.android.inputmethod.keyboard.KeyboardLayoutSet;
29import com.android.inputmethod.latin.setup.LauncherIconVisibilityManager;
30import com.android.inputmethod.latin.utils.UncachedInputMethodManagerUtils;
31
32/**
33 * This class detects the {@link Intent#ACTION_MY_PACKAGE_REPLACED} broadcast intent when this IME
34 * package has been replaced by a newer version of the same package. This class also detects
35 * {@link Intent#ACTION_BOOT_COMPLETED} and {@link Intent#ACTION_USER_INITIALIZE} broadcast intent.
36 *
37 * If this IME has already been installed in the system image and a new version of this IME has
38 * been installed, {@link Intent#ACTION_MY_PACKAGE_REPLACED} is received by this receiver and it
39 * will hide the setup wizard's icon.
40 *
41 * If this IME has already been installed in the data partition and a new version of this IME has
42 * been installed, {@link Intent#ACTION_MY_PACKAGE_REPLACED} is received by this receiver but it
43 * will not hide the setup wizard's icon, and the icon will appear on the launcher.
44 *
45 * If this IME hasn't been installed yet and has been newly installed, no
46 * {@link Intent#ACTION_MY_PACKAGE_REPLACED} will be sent and the setup wizard's icon will appear
47 * on the launcher.
48 *
49 * When the device has been booted, {@link Intent#ACTION_BOOT_COMPLETED} is received by this
50 * receiver and it checks whether the setup wizard's icon should be appeared or not on the launcher
51 * depending on which partition this IME is installed.
52 *
53 * When a multiuser account has been created, {@link Intent#ACTION_USER_INITIALIZE} is received
54 * by this receiver and it checks the whether the setup wizard's icon should be appeared or not on
55 * the launcher depending on which partition this IME is installed.
56 *
57 * When the system locale has been changed, {@link Intent#ACTION_LOCALE_CHANGED} is received by
58 * this receiver and the {@link KeyboardLayoutSet}'s cache is cleared.
59 */
60public final class SystemBroadcastReceiver extends BroadcastReceiver {
61    private static final String TAG = SystemBroadcastReceiver.class.getSimpleName();
62
63    @Override
64    public void onReceive(final Context context, final Intent intent) {
65        final String intentAction = intent.getAction();
66        if (Intent.ACTION_MY_PACKAGE_REPLACED.equals(intentAction)) {
67            Log.i(TAG, "Package has been replaced: " + context.getPackageName());
68            // Need to restore additional subtypes because system always clears additional
69            // subtypes when the package is replaced.
70            RichInputMethodManager.init(context);
71            final RichInputMethodManager richImm = RichInputMethodManager.getInstance();
72            final InputMethodSubtype[] additionalSubtypes = richImm.getAdditionalSubtypes(context);
73            richImm.setAdditionalInputMethodSubtypes(additionalSubtypes);
74            LauncherIconVisibilityManager.updateSetupWizardIconVisibility(context);
75        } else if (Intent.ACTION_BOOT_COMPLETED.equals(intentAction)) {
76            Log.i(TAG, "Boot has been completed");
77            LauncherIconVisibilityManager.updateSetupWizardIconVisibility(context);
78        } else if (IntentCompatUtils.is_ACTION_USER_INITIALIZE(intentAction)) {
79            Log.i(TAG, "User initialize");
80            LauncherIconVisibilityManager.updateSetupWizardIconVisibility(context);
81        } else if (Intent.ACTION_LOCALE_CHANGED.equals(intentAction)) {
82            Log.i(TAG, "System locale changed");
83            KeyboardLayoutSet.onSystemLocaleChanged();
84        }
85
86        // The process that hosts this broadcast receiver is invoked and remains alive even after
87        // 1) the package has been re-installed, 2) the device has just booted,
88        // 3) a new user has been created.
89        // There is no good reason to keep the process alive if this IME isn't a current IME.
90        final InputMethodManager imm =
91                (InputMethodManager)context.getSystemService(Context.INPUT_METHOD_SERVICE);
92        // Called to check whether this IME has been triggered by the current user or not
93        final boolean isInputMethodManagerValidForUserOfThisProcess =
94                !imm.getInputMethodList().isEmpty();
95        final boolean isCurrentImeOfCurrentUser = isInputMethodManagerValidForUserOfThisProcess
96                && UncachedInputMethodManagerUtils.isThisImeCurrent(context, imm);
97        if (!isCurrentImeOfCurrentUser) {
98            final int myPid = Process.myPid();
99            Log.i(TAG, "Killing my process: pid=" + myPid);
100            Process.killProcess(myPid);
101        }
102    }
103}
104