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 JS_DRAG_MANAGER_H
17 #define JS_DRAG_MANAGER_H
18 
19 #include <map>
20 #include <mutex>
21 #include <string>
22 #include <uv.h>
23 #include <vector>
24 
25 #include "napi/native_node_api.h"
26 #include "nocopyable.h"
27 #include "refbase.h"
28 
29 #include "i_drag_listener.h"
30 #include "i_subscript_listener.h"
31 
32 namespace OHOS {
33 namespace Msdp {
34 namespace DeviceStatus {
35 class JsDragManager : public IDragListener, public std::enable_shared_from_this<JsDragManager> {
36 public:
37     JsDragManager() = default;
38     DISALLOW_COPY_AND_MOVE(JsDragManager);
39     ~JsDragManager() = default;
40 
41     void ResetEnv();
42     void OnDragMessage(DragState state) override;
43     void RegisterListener(napi_env env, napi_value handle);
44     void UnregisterListener(napi_env env, napi_value handle = nullptr);
45     napi_value GetDataSummary(napi_env env);
46 
47 private:
48     struct CallbackInfo : public RefBase {
49         napi_env env { nullptr };
50         napi_ref ref { nullptr };
51         DragState state;
52     };
53     template <typename T>
DeletePtr(T & ptr)54     static void DeletePtr(T &ptr)
55     {
56         if (ptr != nullptr) {
57             delete ptr;
58             ptr = nullptr;
59         }
60     }
61 
62     static void CallDragMsg(uv_work_t *work, int32_t status);
63     void DeleteCallbackInfo(std::unique_ptr<CallbackInfo> callback);
64     void ReleaseReference();
65     bool IsSameHandle(napi_env env, napi_value handle, napi_ref ref);
66 
67     std::atomic_bool hasRegistered_ { false };
68     inline static std::mutex mutex_;
69     inline static std::vector<sptr<CallbackInfo>> listeners_ {};
70 };
71 } // namespace DeviceStatus
72 } // namespace Msdp
73 } // namespace OHOS
74 #endif // JS_DRAG_MANAGER_H
75