vite-uni-dev-tool/dist/v3/hooks/useScanCode/index.ts

vite-uni-dev-tool, debug, uni-app, 一处编写，到处调试

import { onHide, onShow, onUnload } from '@dcloudio/uni-app';
import { ref, watch } from 'vue';
import type { Ref } from 'vue';

/**
 * android PDA
 *
 * h5 扫码枪
 *
 * @export
 * @param {(code: string) => void} callback
 * @param {{
 *     disabled?: Ref<boolean>;
 *     broadcastAction?: string;
 *     broadcastStringDataLabel?: string;
 *     scanDelay?: number;
 *     onScanEnd: (code: string) => void;
 *   }} [options]
 */
export default function useScanCode(
  callback: (code: string) => void,
  options?: {
    /** 禁用扫描 */
    disabled?: Ref<boolean>;
    /** 广播动作 */
    broadcastAction?: string;
    /** 广播标签 */
    broadcastStringDataLabel?: string;
    /**
     * 扫描延迟 单位 ms
     * 默认 150
     */
    scanDelay?: number;
    /**
     * 扫描结束
     * @param {string} code
     */
    onScanEnd?: (code: string) => void;
  },
) {
  let main: any;
  let show = ref(true);

  let lastTime: number | null = null;
  let nextTime: number | null = null;
  let lastCode: string | null = null;
  let nextCode: string | null = null;

  let code = '';

  let _codeQueryTag = false;

  let receiver: PlusAndroidInstanceObject;

  let filter: {
    addAction: (arg0: string) => void;
  };

  // #ifdef APP-PLUS

  function startScan() {
    main.registerReceiver(receiver, filter);
  }

  function stopScan() {
    main.unregisterReceiver(receiver);
  }

  function queryCode(code: string) {
    if (_codeQueryTag) return false;

    _codeQueryTag = true;

    setTimeout(function () {
      _codeQueryTag = false;
    }, options?.scanDelay || 150);

    show.value && callback && callback(code);
    show.value && options?.onScanEnd?.(code);
    // 单独使用该 hooks 时，删除收集
    // @ts-ignore
    show.value && uni?.__dev_tool_scan_code_collection__?.(code, 'broadcast');
  }

  function initScan() {
    if (!options?.broadcastAction || !options.broadcastStringDataLabel) {
      throw new Error(
        'PAD 扫描必须传入 broadcastAction, broadcastStringDataLabel',
      );
    }

    main = plus.android.runtimeMainActivity(); //获取activity

    const IntentFilter: any = plus.android.importClass(
      'android.content.IntentFilter',
    );

    filter = new IntentFilter();

    filter.addAction(options?.broadcastAction); // 换你的广播动作

    receiver = plus.android.implements(
      'io.dcloud.feature.internal.reflect.BroadcastReceiver',
      {
        onReceive: function (_context: any, intent: any) {
          plus.android.importClass(intent);
          let code = intent.getStringExtra(options?.broadcastStringDataLabel); // 换你的广播标签
          queryCode(code);
        },
      },
    );
  }

  onShow(() => {
    initScan();
    startScan();
    show.value = true && !options?.disabled?.value;
  });
  onHide(() => {
    show.value = false;
    stopScan();
  });
  onUnload(() => {
    show.value = false;
    stopScan();
  });

  watch(
    () => [options?.disabled?.value],
    () => {
      show.value = !options?.disabled?.value;
    },
  );

  // #endif

  // #ifdef H5

  function queryCodeH5(e: KeyboardEvent) {
    if (_codeQueryTag) return;

    if (e.key === 'Enter') {
      e.preventDefault();
    }
    if (e.key === 'CapsLock') {
      e.preventDefault();
    }
    nextCode = e.key;

    nextTime = Date.now();

    if (lastCode !== null && lastTime !== null && nextTime - lastTime <= 40) {
      code += lastCode;
    } else if (
      lastCode !== null &&
      lastTime !== null &&
      nextTime - lastTime > 100
    ) {
      code = '';
    }
    lastCode = nextCode;
    lastTime = nextTime;

    if (e.key === 'Enter' && code.length > 0) {
      _codeQueryTag = true;
      setTimeout(function () {
        _codeQueryTag = false;
      }, options?.scanDelay || 150);
      callback?.(code);
      options?.onScanEnd?.(code);
      // 单独使用该 hooks 时，删除收集
      // @ts-ignore
      uni?.__dev_tool_scan_code_collection__?.(code, 'keypress');
      code = '';
    }
  }

  onShow(() => {
    show.value = true;
  });
  onHide(() => {
    window.removeEventListener('keypress', queryCodeH5);
  });
  onUnload(() => {
    window.removeEventListener('keypress', queryCodeH5);
  });

  watch(
    () => [options?.disabled?.value, show.value],
    () => {
      if (!options?.disabled?.value && show.value) {
        window.removeEventListener('keypress', queryCodeH5);
        window.addEventListener('keypress', queryCodeH5);
      } else {
        window.removeEventListener('keypress', queryCodeH5);
      }
    },
    {
      immediate: true,
    },
  );

  // #endif
}