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 for (auto iter = eventMap_.begin(); iter != eventMap_.end(); iter++) {
32 auto listener = iter->second;
33 napi_delete_reference(env_, listener->handlerRef);
34 }
35 eventMap_.clear();
36 napi_delete_reference(env_, thisVarRef_);
37 }
38
On(std::string & eventType,napi_value handler)39 void DmNativeEvent::On(std::string &eventType, napi_value handler)
40 {
41 LOGI("DmNativeEvent On in for event: %{public}s", eventType.c_str());
42 std::lock_guard<std::mutex> autoLock(lock_);
43 auto listener = std::make_shared<DmEventListener>();
44 listener->eventType = eventType;
45 napi_create_reference(env_, handler, 1, &listener->handlerRef);
46 eventMap_[eventType] = listener;
47 }
48
Off(std::string & eventType)49 void DmNativeEvent::Off(std::string &eventType)
50 {
51 LOGI("DmNativeEvent Off in for event: %{public}s", eventType.c_str());
52 napi_handle_scope scope = nullptr;
53 napi_open_handle_scope(env_, &scope);
54 if (scope == nullptr) {
55 LOGE("scope is nullptr");
56 return;
57 }
58
59 std::lock_guard<std::mutex> autoLock(lock_);
60 auto iter = eventMap_.find(eventType);
61 if (iter == eventMap_.end()) {
62 LOGE("eventType %{public}s not find", eventType.c_str());
63 napi_close_handle_scope(env_, scope);
64 return;
65 }
66 auto listener = iter->second;
67 napi_delete_reference(env_, listener->handlerRef);
68 eventMap_.erase(eventType);
69 napi_close_handle_scope(env_, scope);
70 }
71
OnEvent(const std::string & eventType,size_t argc,const napi_value * argv)72 void DmNativeEvent::OnEvent(const std::string &eventType, size_t argc, const napi_value *argv)
73 {
74 LOGI("OnEvent for %{public}s", eventType.c_str());
75 napi_handle_scope scope = nullptr;
76 napi_open_handle_scope(env_, &scope);
77 if (scope == nullptr) {
78 LOGE("scope is nullptr");
79 return;
80 }
81
82 std::lock_guard<std::mutex> autoLock(lock_);
83 auto iter = eventMap_.find(eventType);
84 if (iter == eventMap_.end()) {
85 LOGE("eventType %{public}s not find", eventType.c_str());
86 napi_close_handle_scope(env_, scope);
87 return;
88 }
89 auto listener = iter->second;
90 napi_value thisVar = nullptr;
91 napi_status status = napi_get_reference_value(env_, thisVarRef_, &thisVar);
92 if (status != napi_ok) {
93 LOGE("napi_get_reference_value thisVar for %{public}s failed, status = %{public}d", eventType.c_str(), status);
94 napi_close_handle_scope(env_, scope);
95 return;
96 }
97
98 napi_value handler = nullptr;
99 status = napi_get_reference_value(env_, listener->handlerRef, &handler);
100 if (status != napi_ok) {
101 LOGE("napi_get_reference_value handler for %{public}s failed, status = %{public}d", eventType.c_str(), status);
102 napi_close_handle_scope(env_, scope);
103 return;
104 }
105
106 napi_value callResult = nullptr;
107 status = napi_call_function(env_, thisVar, handler, argc, argv, &callResult);
108 if (status != napi_ok) {
109 LOGE("napi_call_function for %{public}s failed, status = %{public}d", eventType.c_str(), status);
110 napi_close_handle_scope(env_, scope);
111 return;
112 }
113 napi_close_handle_scope(env_, scope);
114 }
115