1 /*
2 * Copyright (c) 2023 Huawei Device Co., Ltd.
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with the License.
5 * You may obtain a copy of the License at
6 *
7 * http://www.apache.org/licenses/LICENSE-2.0
8 *
9 * Unless required by applicable law or agreed to in writing, software
10 * distributed under the License is distributed on an "AS IS" BASIS,
11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 * See the License for the specific language governing permissions and
13 * limitations under the License.
14 */
15
16 #include "system_language_observer.h"
17
18 #include "global.h"
19 #include "message.h"
20 #include "message_handler.h"
21 #include "parameter.h"
22
23 namespace OHOS {
24 namespace MiscServices {
GetInstance()25 SystemLanguageObserver &SystemLanguageObserver::GetInstance()
26 {
27 static SystemLanguageObserver observer;
28 return observer;
29 }
30
Watch()31 void SystemLanguageObserver::Watch()
32 {
33 auto errNo = WatchParameter(SYSTEM_LANGUAGE_KEY, OnChange, nullptr);
34 IMSA_HILOGD("ret: %{public}d.", errNo);
35 }
36
OnChange(const char * key,const char * value,void * context)37 void SystemLanguageObserver::OnChange(const char *key, const char *value, void *context)
38 {
39 if (strncmp(key, SYSTEM_LANGUAGE_KEY, strlen(SYSTEM_LANGUAGE_KEY)) != 0) {
40 IMSA_HILOGE("key: %{public}s is error!", key);
41 return;
42 }
43 IMSA_HILOGD("value: %{public}s.", value);
44 Message *msg = new (std::nothrow) Message(MessageID::MSG_ID_SYS_LANGUAGE_CHANGED, nullptr);
45 if (msg == nullptr) {
46 return;
47 }
48 MessageHandler::Instance()->SendMessage(msg);
49 }
50 } // namespace MiscServices
51 } // namespace OHOS