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 FOUNDATION_ACE_FRAMEWORKS_CORE_COMPONENTS_NG_PATTERNS_SCROLLABLE_COORDINATION_EVENT_HUB_H
17 #define FOUNDATION_ACE_FRAMEWORKS_CORE_COMPONENTS_NG_PATTERNS_SCROLLABLE_COORDINATION_EVENT_HUB_H
18 
19 #include <functional>
20 #include <utility>
21 
22 #include "base/memory/ace_type.h"
23 
24 namespace OHOS::Ace::NG {
25 using OnCoordinatingScrollEvent = std::function<bool(float, float)>;
26 using OnCoordinatingScrollStartEvent = std::function<void(bool, float)>;
27 using OnCoordinatingScrollEndEvent = std::function<void(float)>;
28 
29 class ScrollableCoordinationEvent : public AceType {
30 public:
31     ScrollableCoordinationEvent() = default;
32     ~ScrollableCoordinationEvent() = default;
SetOnScrollEvent(OnCoordinatingScrollEvent && onScrollEvent)33     void SetOnScrollEvent(OnCoordinatingScrollEvent&& onScrollEvent)
34     {
35         onScrollEvent_ = std::move(onScrollEvent);
36     }
37 
GetOnScroll()38     const OnCoordinatingScrollEvent& GetOnScroll() const
39     {
40         return onScrollEvent_;
41     }
42 
SetOnScrollStartEvent(OnCoordinatingScrollStartEvent && onScrollStartEvent)43     void SetOnScrollStartEvent(OnCoordinatingScrollStartEvent&& onScrollStartEvent)
44     {
45         onScrollStartEvent_ = std::move(onScrollStartEvent);
46     }
47 
GetOnScrollStartEvent()48     const OnCoordinatingScrollStartEvent& GetOnScrollStartEvent()
49     {
50         return onScrollStartEvent_;
51     }
52 
SetOnScrollEndEvent(OnCoordinatingScrollEndEvent && onScrollEndEvent)53     void SetOnScrollEndEvent(OnCoordinatingScrollEndEvent&& onScrollEndEvent)
54     {
55         onScrollEndEvent_ = std::move(onScrollEndEvent);
56     }
57 
GetOnScrollEndEvent()58     const OnCoordinatingScrollEndEvent& GetOnScrollEndEvent()
59     {
60         return onScrollEndEvent_;
61     }
62 
63 private:
64     OnCoordinatingScrollEvent onScrollEvent_;
65     OnCoordinatingScrollStartEvent onScrollStartEvent_;
66     OnCoordinatingScrollEndEvent onScrollEndEvent_;
67 };
68 } // namespace OHOS::Ace::NG
69 
70 #endif