1 /*
2 * Copyright (c) 2021 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: %s", eventType.c_str());
42 auto listener = std::make_shared<DmEventListener>();
43 listener->eventType = eventType;
44 napi_create_reference(env_, handler, 1, &listener->handlerRef);
45 eventMap_[eventType] = listener;
46 }
47
Off(std::string & eventType)48 void DmNativeEvent::Off(std::string &eventType)
49 {
50 LOGI("DmNativeEvent Off in for event: %s", eventType.c_str());
51 napi_handle_scope scope = nullptr;
52 napi_open_handle_scope(env_, &scope);
53 if (scope == nullptr) {
54 LOGE("scope is nullptr");
55 return;
56 }
57
58 auto iter = eventMap_.find(eventType);
59 if (iter == eventMap_.end()) {
60 LOGE("eventType %s not find", eventType.c_str());
61 return;
62 }
63 auto listener = iter->second;
64 napi_delete_reference(env_, listener->handlerRef);
65 eventMap_.erase(eventType);
66 napi_close_handle_scope(env_, scope);
67 }
68
OnEvent(const std::string & eventType,size_t argc,const napi_value * argv)69 void DmNativeEvent::OnEvent(const std::string &eventType, size_t argc, const napi_value *argv)
70 {
71 LOGI("OnEvent for %s", eventType.c_str());
72 napi_handle_scope scope = nullptr;
73 napi_open_handle_scope(env_, &scope);
74 if (scope == nullptr) {
75 LOGE("scope is nullptr");
76 return;
77 }
78
79 auto iter = eventMap_.find(eventType);
80 if (iter == eventMap_.end()) {
81 LOGE("eventType %s not find", eventType.c_str());
82 return;
83 }
84 auto listener = iter->second;
85 napi_value thisVar = nullptr;
86 napi_status status = napi_get_reference_value(env_, thisVarRef_, &thisVar);
87 if (status != napi_ok) {
88 LOGE("napi_get_reference_value thisVar for %s failed, status=%d", eventType.c_str(), status);
89 return;
90 }
91
92 napi_value handler = nullptr;
93 status = napi_get_reference_value(env_, listener->handlerRef, &handler);
94 if (status != napi_ok) {
95 LOGE("napi_get_reference_value handler for %s failed, status=%d", eventType.c_str(), status);
96 return;
97 }
98
99 napi_value callResult = nullptr;
100 status = napi_call_function(env_, thisVar, handler, argc, argv, &callResult);
101 if (status != napi_ok) {
102 LOGE("napi_call_function for %s failed, status=%d", eventType.c_str(), status);
103 return;
104 }
105 napi_close_handle_scope(env_, scope);
106 }