1/* 2 * Copyright (c) 2021-2022 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 16import NfcController from '@ohos.nfc.controller'; 17import { BusinessError } from 'basic'; 18import Log from '../../../../../../../../common/src/main/ets/default/Log'; 19import createOrGet from '../../../../../../../../common/src/main/ets/default/SingleInstanceHelper'; 20 21const TAG = 'NFCModel'; 22 23export interface NFCModeStatusListener { 24 updateNFCMode(status: NfcController.NfcState): void; 25} 26 27export class NFCModeService { 28 mIsStart = false; 29 mListeners = new Set<NFCModeStatusListener>(); 30 mNFCManager: any; 31 32 startService(): void { 33 if (this.mIsStart) { 34 return; 35 } 36 Log.showInfo(TAG, 'startService'); 37 this.mIsStart = true; 38 39 this.mNFCManager = NfcController 40 41 this.getNFCMode(); 42 43 this.mNFCManager.on('nfcStateChange', (data: NfcController.NfcState) => { 44 Log.showInfo(TAG, `startService->nfcStateChange, data: ${JSON.stringify(data)}`); 45 if(data == NfcController.NfcState.STATE_OFF || data == NfcController.NfcState.STATE_ON) { 46 this.mListeners.forEach(listener => listener.updateNFCMode(data)); 47 } 48 }); 49 } 50 51 stopService(): void { 52 if (!this.mIsStart) { 53 return; 54 } 55 Log.showInfo(TAG, 'stopService'); 56 this.mIsStart = false; 57 58 this.mNFCManager = null; 59 } 60 61 registerListener(listener: NFCModeStatusListener): void { 62 let res = this.mListeners.add(listener); 63 Log.showInfo(TAG, `registser NfcState Listener ${res}`); 64 } 65 66 unregisterListener(listener: NFCModeStatusListener): void { 67 let res = this.mListeners.delete(listener); 68 Log.showInfo(TAG, `unregistser NfcState Listener ${res}`); 69 } 70 71 getNFCMode(): void { 72 let action = this.mNFCManager.getNfcState(); 73 Log.showInfo(TAG, `getNFCMode${action}`); 74 this.mListeners.forEach(listener => listener.updateNFCMode(action)); 75 } 76 77 setNFCMode(mode: NfcController.NfcState): void { 78 Log.showInfo(TAG, `setNFCMode, mode: ${JSON.stringify(mode)}`); 79 let isSucceed = false; 80 switch (mode) { 81 case NfcController.NfcState.STATE_OFF: 82 isSucceed = this.mNFCManager.openNfc(); 83 Log.showInfo(TAG, `openNFC` + isSucceed); 84 break; 85 case NfcController.NfcState.STATE_ON: 86 isSucceed = this.mNFCManager.closeNfc(); 87 Log.showInfo(TAG, `closeNFC` + isSucceed); 88 break; 89 default: 90 break; 91 } 92 } 93} 94 95let sNFCModeService = createOrGet(NFCModeService, TAG); 96 97export default sNFCModeService;