1 /*
2  * Copyright (C) 2018 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 package com.android.tv.settings.inputmethod;
17 
18 import android.app.ActivityManager;
19 import android.content.Context;
20 import android.content.Intent;
21 import android.os.RemoteException;
22 import android.os.UserHandle;
23 import android.provider.Settings;
24 import android.text.TextUtils;
25 import android.util.Log;
26 import android.view.inputmethod.InputMethodInfo;
27 import android.view.inputmethod.InputMethodManager;
28 
29 import java.util.ArrayList;
30 import java.util.List;
31 
32 /**
33  * Helper class for InputMethod
34  */
35 public class InputMethodHelper {
36 
37     public static final String TAG = "InputMethodHelper";
38 
39     /**
40      * Get list of enabled InputMethod
41      */
getEnabledSystemInputMethodList(Context context)42     public static List<InputMethodInfo> getEnabledSystemInputMethodList(Context context) {
43         InputMethodManager inputMethodManager =
44                 (InputMethodManager) context.getSystemService(Context.INPUT_METHOD_SERVICE);
45         List<InputMethodInfo> enabledInputMethodInfos =
46                 new ArrayList<>(inputMethodManager.getEnabledInputMethodList());
47         // Filter auxiliary keyboards out
48         enabledInputMethodInfos.removeIf(InputMethodInfo::isAuxiliaryIme);
49         return enabledInputMethodInfos;
50     }
51 
52     /**
53      * Get id of default InputMethod
54      */
getDefaultInputMethodId(Context context)55     public static String getDefaultInputMethodId(Context context) {
56         return Settings.Secure.getString(context.getContentResolver(),
57                 Settings.Secure.DEFAULT_INPUT_METHOD);
58     }
59 
60     /**
61      * Set default InputMethod by id
62      */
setDefaultInputMethodId(Context context, String imid)63     public static void setDefaultInputMethodId(Context context, String imid) {
64         if (imid == null) {
65             throw new IllegalArgumentException("Null ID");
66         }
67 
68         try {
69             int userId = ActivityManager.getService().getCurrentUser().id;
70             Settings.Secure.putStringForUser(context.getContentResolver(),
71                     Settings.Secure.DEFAULT_INPUT_METHOD, imid, userId);
72 
73             Intent intent = new Intent(Intent.ACTION_INPUT_METHOD_CHANGED);
74             intent.addFlags(Intent.FLAG_RECEIVER_REPLACE_PENDING);
75             intent.putExtra("input_method_id", imid);
76             context.sendBroadcastAsUser(intent, UserHandle.CURRENT);
77         } catch (RemoteException e) {
78             Log.d(TAG, "set default input method remote exception", e);
79         }
80     }
81 
82     /**
83      * Find InputMethod from a List by id.
84      */
findInputMethod(String imid, List<InputMethodInfo> enabledInputMethodInfos)85     public static InputMethodInfo findInputMethod(String imid,
86             List<InputMethodInfo> enabledInputMethodInfos) {
87         for (int i = 0, size = enabledInputMethodInfos.size(); i < size; i++) {
88             final InputMethodInfo info = enabledInputMethodInfos.get(i);
89             final String id = info.getId();
90             if (TextUtils.equals(id, imid)) {
91                 return info;
92             }
93         }
94         return null;
95     }
96 
97     /**
98      * Get settings Intent of an InputMethod.
99      */
getInputMethodSettingsIntent(InputMethodInfo imi)100     public static Intent getInputMethodSettingsIntent(InputMethodInfo imi) {
101         final Intent intent;
102         final String settingsActivity = imi.getSettingsActivity();
103         if (!TextUtils.isEmpty(settingsActivity)) {
104             intent = new Intent(Intent.ACTION_MAIN);
105             intent.setClassName(imi.getPackageName(), settingsActivity);
106         } else {
107             intent = null;
108         }
109         return intent;
110     }
111 }
112