1 /*
2  * Copyright (c) 2021 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 FOUNDATION_ACE_FRAMEWORKS_CORE_EVENT_EVENT_TRIGGER_H
17 #define FOUNDATION_ACE_FRAMEWORKS_CORE_EVENT_EVENT_TRIGGER_H
18 
19 #include "base/log/log.h"
20 #include "core/event/ace_event_handler.h"
21 #include "core/event/ace_events.h"
22 #include "core/event/back_end_event_manager.h"
23 
24 namespace OHOS::Ace {
25 
26 class EventTrigger final {
27 public:
RegisterEventHandler(const RefPtr<AceEventHandler> & handler)28     void RegisterEventHandler(const RefPtr<AceEventHandler>& handler)
29     {
30         handler_ = handler;
31     }
32 
33     template<class... Args>
TriggerAsyncEvent(const EventMarker & marker,Args &&...args)34     void TriggerAsyncEvent(const EventMarker& marker, Args&&... args)
35     {
36         if (!marker.GetData().isFront) {
37             BackEndEventManager<void(Args...)>::GetInstance().FireBackEndEvent(marker, std::forward<Args>(args)...);
38             return;
39         }
40         auto handler = handler_.Upgrade();
41         if (!handler) {
42             LOGE("fail to trigger async event due to event handler is nullptr");
43             return;
44         }
45         handler->HandleAsyncEvent(marker, std::forward<Args>(args)...);
46     }
47 
48     template<class... Args>
TriggerSyncEvent(const EventMarker & marker,Args &&...args)49     void TriggerSyncEvent(const EventMarker& marker, Args&&... args)
50     {
51         if (!marker.GetData().isFront) {
52             BackEndEventManager<void(Args...)>::GetInstance().FireBackEndEvent(marker, std::forward<Args>(args)...);
53             return;
54         }
55         auto handler = handler_.Upgrade();
56         if (!handler) {
57             LOGE("fail to trigger sync event due to event handler is nullptr");
58             return;
59         }
60         handler->HandleSyncEvent(marker, std::forward<Args>(args)...);
61     }
62 
63 private:
64     WeakPtr<AceEventHandler> handler_;
65 };
66 
67 } // namespace OHOS::Ace
68 
69 #endif // FOUNDATION_ACE_FRAMEWORKS_CORE_EVENT_EVENT_TRIGGER_H
70