1 /* 2 * Copyright (C) 2022 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 #ifndef ACCESSIBILITY_CONFIG_OBSERVER_H 17 #define ACCESSIBILITY_CONFIG_OBSERVER_H 18 19 #include <map> 20 #include <string> 21 #include <uv.h> 22 #include "accessibility_config.h" 23 #include "napi/native_api.h" 24 #include "napi/native_node_api.h" 25 26 const uint32_t CONFIG_START_WORK_ARGS_SIZE = 2; 27 28 struct NAccessibilityConfigObserver { 29 public: NAccessibilityConfigObserverNAccessibilityConfigObserver30 NAccessibilityConfigObserver(napi_env env, napi_ref callback, OHOS::AccessibilityConfig::CONFIG_ID id) 31 : env_(env), handlerRef_(callback), configId_(id) {}; 32 void OnConfigChanged(const OHOS::AccessibilityConfig::ConfigValue& value); 33 34 void NotifyStateChanged2JS(bool enabled); 35 int NotifyStateChanged(uv_work_t *work); 36 void NotifyPropertyChanged2JS(const OHOS::AccessibilityConfig::CaptionProperty &caption); 37 int NotifyPropertyChanged(uv_work_t *work); 38 void NotifyStringChanged2JS(const std::string& value); 39 int NotifyStringChanged(uv_work_t *work); 40 void NotifyIntChanged2JS(int32_t value); 41 int NotifyIntChanged(uv_work_t *work); 42 void NotifyUintChanged2JS(uint32_t value); 43 int NotifyUintChanged(uv_work_t *work); 44 void NotifyFloatChanged2JS(float value); 45 int NotifyFloatChanged(uv_work_t *work); 46 47 napi_env env_ = nullptr; 48 napi_ref handlerRef_ = nullptr; 49 OHOS::AccessibilityConfig::CONFIG_ID configId_ = OHOS::AccessibilityConfig::CONFIG_ID::CONFIG_ID_MAX; 50 }; 51 52 class NAccessibilityConfigObserverImpl : public OHOS::AccessibilityConfig::AccessibilityConfigObserver, 53 public std::enable_shared_from_this<NAccessibilityConfigObserverImpl> { 54 public: 55 NAccessibilityConfigObserverImpl() = default; 56 virtual void OnConfigChanged( 57 const OHOS::AccessibilityConfig::CONFIG_ID id, const OHOS::AccessibilityConfig::ConfigValue& value) override; 58 void SubscribeToFramework(); 59 void SubscribeObserver(napi_env env, OHOS::AccessibilityConfig::CONFIG_ID id, napi_value observer); 60 void UnsubscribeObserver(napi_env env, OHOS::AccessibilityConfig::CONFIG_ID id, napi_value observer); 61 void UnsubscribeObservers(OHOS::AccessibilityConfig::CONFIG_ID id); 62 63 private: 64 std::mutex mutex_; 65 std::vector<std::shared_ptr<NAccessibilityConfigObserver>> observers_ = {}; 66 }; 67 #endif // ACCESSIBILITY_CONFIG_OBSERVER_H