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 "parameter.h"
20 namespace OHOS {
21 namespace MiscServices {
22 SystemLanguageObserver::ChangeHandler SystemLanguageObserver::handler_;
GetInstance()23 SystemLanguageObserver &SystemLanguageObserver::GetInstance()
24 {
25 static SystemLanguageObserver observer;
26 return observer;
27 }
28
Watch(ChangeHandler handler)29 void SystemLanguageObserver::Watch(ChangeHandler handler)
30 {
31 handler_ = std::move(handler);
32 auto errNo = WatchParameter(SYSTEM_LANGUAGE_KEY, OnChange, nullptr);
33 IMSA_HILOGD("ret: %{public}d", errNo);
34 }
35
OnChange(const char * key,const char * value,void * context)36 void SystemLanguageObserver::OnChange(const char *key, const char *value, void *context)
37 {
38 if (strncmp(key, SYSTEM_LANGUAGE_KEY, strlen(SYSTEM_LANGUAGE_KEY)) != 0) {
39 IMSA_HILOGE("key: %{public}s is error", key);
40 return;
41 }
42 IMSA_HILOGD("value: %{public}s", value);
43 if (handler_ != nullptr) {
44 handler_();
45 }
46 }
47 } // namespace MiscServices
48 } // namespace OHOS