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 #ifndef OHOS_NFC_APP_STATE_OBSERVER_H
17 #define OHOS_NFC_APP_STATE_OBSERVER_H
18 
19 #include "app_mgr_interface.h"
20 #include "application_state_observer_stub.h"
21 #include "iremote_object.h"
22 #include "infc_app_state_observer.h"
23 
24 namespace OHOS {
25 namespace NFC {
26 class AppMgrDeathRecipient : public IRemoteObject::DeathRecipient {
27     void OnRemoteDied([[maybe_unused]] const wptr<IRemoteObject> &remote) override;
28 };
29 
30 class AppStateObserver {
31 public:
32     explicit AppStateObserver(INfcAppStateObserver *nfcAppStateChangeCallback);
33     ~AppStateObserver();
34     AppStateObserver(const AppStateObserver &) = delete;
35     AppStateObserver &operator=(const AppStateObserver &) = delete;
36     bool SubscribeAppState();
37     bool UnSubscribeAppState();
38     bool IsForegroundApp(const std::string &bundleName);
39 
40 private:
41     class AppStateAwareObserver : public AppExecFwk::ApplicationStateObserverStub {
42     public:
43         void OnProcessDied(const AppExecFwk::ProcessData &processData) override;
44         void OnAbilityStateChanged(const AppExecFwk::AbilityStateData &abilityStateData) override;
45         void OnForegroundApplicationChanged(const AppExecFwk::AppStateData &appStateData) override;
46         bool RegisterAppStateChangeCallback(INfcAppStateObserver *nfcAppStateChangeCallback);
47 
48     private:
49         INfcAppStateObserver *nfcAppStateChangeCallback_;
50     };
51     bool Connect();
52     bool RegisterAppStateChangeCallback(INfcAppStateObserver *nfcAppStateChangeCallback);
53 
54 private:
55     sptr<AppStateAwareObserver> appStateAwareObserver_;
56 };
57 } //namespace NFC
58 } // namespace OHOS
59 #endif // OHOS_NFC_APP_STATE_OBSERVER_H