1 /*
2  * Copyright (c) 2022 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_COMPONENTS_NG_PATTERNS_BUBBLE_BUBBLE_EVENT_HUB_H
17 #define FOUNDATION_ACE_FRAMEWORKS_CORE_COMPONENTS_NG_PATTERNS_BUBBLE_BUBBLE_EVENT_HUB_H
18 
19 #include <string>
20 
21 #include "base/memory/ace_type.h"
22 #include "core/components_ng/event/event_hub.h"
23 #include "core/components_ng/event/gesture_event_hub.h"
24 #include "core/pipeline_ng/pipeline_context.h"
25 
26 namespace OHOS::Ace::NG {
27 
28 using StateChangeEvent = std::function<void(const std::string&)>;
29 
30 class BubbleEventHub : public EventHub {
31     DECLARE_ACE_TYPE(BubbleEventHub, EventHub)
32 
33 public:
34     BubbleEventHub() = default;
35     ~BubbleEventHub() override = default;
36 
SetOnStateChange(StateChangeEvent && changeEvent)37     void SetOnStateChange(StateChangeEvent&& changeEvent)
38     {
39         changeEvent_ = std::move(changeEvent);
40     }
41 
FireChangeEvent(bool isVisible)42     void FireChangeEvent(bool isVisible)
43     {
44         if (changeEvent_) {
45             auto json = JsonUtil::Create(true);
46             json->Put("isVisible", isVisible);
47             changeEvent_(json->ToString());
48         }
49     }
50 
51 private:
52     StateChangeEvent changeEvent_;
53 
54     ACE_DISALLOW_COPY_AND_MOVE(BubbleEventHub);
55 };
56 
57 } // namespace OHOS::Ace::NG
58 
59 #endif // FOUNDATION_ACE_FRAMEWORKS_CORE_COMPONENTS_NG_PATTERNS_BUBBLE_BUBBLE_EVENT_HUB_H