1 /*
2 * Copyright (c) 2022-2023 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 #include "dm_native_event.h"
17
18 #include "dm_log.h"
19
20 using namespace OHOS::DistributedHardware;
21
DmNativeEvent(napi_env env,napi_value thisVar)22 DmNativeEvent::DmNativeEvent(napi_env env, napi_value thisVar)
23 {
24 env_ = env;
25 thisVarRef_ = nullptr;
26 napi_create_reference(env, thisVar, 1, &thisVarRef_);
27 }
28
~DmNativeEvent()29 DmNativeEvent::~DmNativeEvent()
30 {
31 {
32 std::lock_guard<std::mutex> autoLock(eventMapLock_);
33 for (auto iter = eventMap_.begin(); iter != eventMap_.end(); iter++) {
34 auto listener = iter->second;
35 if (listener != nullptr) {
36 napi_delete_reference(env_, listener->handlerRef);
37 }
38 }
39 eventMap_.clear();
40 }
41 napi_delete_reference(env_, thisVarRef_);
42 }
43
On(std::string & eventType,napi_value handler)44 void DmNativeEvent::On(std::string &eventType, napi_value handler)
45 {
46 LOGI("DmNativeEvent On in for event: %{public}s", eventType.c_str());
47 std::lock_guard<std::mutex> autoLock(eventMapLock_);
48 auto listener = std::make_shared<DmEventListener>();
49 listener->eventType = eventType;
50 napi_create_reference(env_, handler, 1, &listener->handlerRef);
51 eventMap_[eventType] = listener;
52 }
53
Off(std::string & eventType)54 void DmNativeEvent::Off(std::string &eventType)
55 {
56 LOGI("DmNativeEvent Off in for event: %{public}s", eventType.c_str());
57 napi_handle_scope scope = nullptr;
58 napi_status status = napi_open_handle_scope(env_, &scope);
59 if (status != napi_ok || scope == nullptr) {
60 LOGE("open handle scope failed");
61 return;
62 }
63
64 std::lock_guard<std::mutex> autoLock(eventMapLock_);
65 auto iter = eventMap_.find(eventType);
66 if (iter == eventMap_.end()) {
67 LOGE("eventType %{public}s not find", eventType.c_str());
68 napi_close_handle_scope(env_, scope);
69 return;
70 }
71 auto listener = iter->second;
72 napi_delete_reference(env_, listener->handlerRef);
73 eventMap_.erase(eventType);
74 napi_close_handle_scope(env_, scope);
75 }
76
OnEvent(const std::string & eventType,size_t argc,const napi_value * argv)77 void DmNativeEvent::OnEvent(const std::string &eventType, size_t argc, const napi_value *argv)
78 {
79 LOGI("OnEvent for %{public}s", eventType.c_str());
80 napi_handle_scope scope = nullptr;
81 napi_status status = napi_open_handle_scope(env_, &scope);
82 if (status != napi_ok || scope == nullptr) {
83 LOGE("open handle scope failed");
84 return;
85 }
86
87 std::lock_guard<std::mutex> autoLock(eventMapLock_);
88 auto iter = eventMap_.find(eventType);
89 if (iter == eventMap_.end()) {
90 LOGE("eventType %{public}s not find", eventType.c_str());
91 napi_close_handle_scope(env_, scope);
92 return;
93 }
94 auto listener = iter->second;
95 napi_value thisVar = nullptr;
96 status = napi_get_reference_value(env_, thisVarRef_, &thisVar);
97 if (status != napi_ok) {
98 LOGE("napi_get_reference_value thisVar for %{public}s failed, status = %{public}d", eventType.c_str(), status);
99 napi_close_handle_scope(env_, scope);
100 return;
101 }
102
103 napi_value handler = nullptr;
104 status = napi_get_reference_value(env_, listener->handlerRef, &handler);
105 if (status != napi_ok) {
106 LOGE("napi_get_reference_value handler for %{public}s failed, status = %{public}d", eventType.c_str(), status);
107 napi_close_handle_scope(env_, scope);
108 return;
109 }
110
111 napi_value callResult = nullptr;
112 status = napi_call_function(env_, thisVar, handler, argc, argv, &callResult);
113 if (status != napi_ok) {
114 LOGE("napi_call_function for %{public}s failed, status = %{public}d", eventType.c_str(), status);
115 napi_close_handle_scope(env_, scope);
116 return;
117 }
118 napi_close_handle_scope(env_, scope);
119 }
120