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