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 if (listener != nullptr) {
34 napi_delete_reference(env_, listener->handlerRef);
35 }
36 }
37 eventMap_.clear();
38 napi_delete_reference(env_, thisVarRef_);
39 }
40
On(std::string &eventType, napi_value handler)41 void DmNativeEvent::On(std::string &eventType, napi_value handler)
42 {
43 LOGI("DmNativeEvent On in for event: %{public}s", eventType.c_str());
44 std::lock_guard<std::mutex> autoLock(lock_);
45 auto listener = std::make_shared<DmEventListener>();
46 listener->eventType = eventType;
47 napi_create_reference(env_, handler, 1, &listener->handlerRef);
48 eventMap_[eventType] = listener;
49 }
50
Off(std::string &eventType)51 void DmNativeEvent::Off(std::string &eventType)
52 {
53 LOGI("DmNativeEvent Off in for event: %{public}s", eventType.c_str());
54 napi_handle_scope scope = nullptr;
55 napi_open_handle_scope(env_, &scope);
56 if (scope == nullptr) {
57 LOGE("scope is nullptr");
58 return;
59 }
60
61 std::lock_guard<std::mutex> autoLock(lock_);
62 auto iter = eventMap_.find(eventType);
63 if (iter == eventMap_.end()) {
64 LOGE("eventType %{public}s not find", eventType.c_str());
65 napi_close_handle_scope(env_, scope);
66 return;
67 }
68 auto listener = iter->second;
69 napi_delete_reference(env_, listener->handlerRef);
70 eventMap_.erase(eventType);
71 napi_close_handle_scope(env_, scope);
72 }
73
OnEvent(const std::string &eventType, size_t argc, const napi_value *argv)74 void DmNativeEvent::OnEvent(const std::string &eventType, size_t argc, const napi_value *argv)
75 {
76 LOGI("OnEvent for %{public}s", eventType.c_str());
77 napi_handle_scope scope = nullptr;
78 napi_open_handle_scope(env_, &scope);
79 if (scope == nullptr) {
80 LOGE("scope is nullptr");
81 return;
82 }
83
84 std::lock_guard<std::mutex> autoLock(lock_);
85 auto iter = eventMap_.find(eventType);
86 if (iter == eventMap_.end()) {
87 LOGE("eventType %{public}s not find", eventType.c_str());
88 napi_close_handle_scope(env_, scope);
89 return;
90 }
91 auto listener = iter->second;
92 napi_value thisVar = nullptr;
93 napi_status status = napi_get_reference_value(env_, thisVarRef_, &thisVar);
94 if (status != napi_ok) {
95 LOGE("napi_get_reference_value thisVar for %{public}s failed, status = %{public}d", eventType.c_str(), status);
96 napi_close_handle_scope(env_, scope);
97 return;
98 }
99
100 napi_value handler = nullptr;
101 status = napi_get_reference_value(env_, listener->handlerRef, &handler);
102 if (status != napi_ok) {
103 LOGE("napi_get_reference_value handler for %{public}s failed, status = %{public}d", eventType.c_str(), status);
104 napi_close_handle_scope(env_, scope);
105 return;
106 }
107
108 napi_value callResult = nullptr;
109 status = napi_call_function(env_, thisVar, handler, argc, argv, &callResult);
110 if (status != napi_ok) {
111 LOGE("napi_call_function for %{public}s failed, status = %{public}d", eventType.c_str(), status);
112 napi_close_handle_scope(env_, scope);
113 return;
114 }
115 napi_close_handle_scope(env_, scope);
116 }
117