jsh_erp_app/plugins/printer.ts

import Vue from "vue";
import { ConnectedDevice, Lifecycle } from "@psdk/frame-father";
import { CPCL, GenericCPCL } from "@psdk/cpcl";
import { GenericTSPL, TSPL } from "@psdk/tspl";
import { ESC, GenericESC } from "@psdk/esc";

class Printer {
  private _connectedDevice?: ConnectedDevice;
  private _cpcl?: GenericCPCL;
  private _tspl?: GenericTSPL;
  private _esc?: GenericESC;
  init(connectedDevice: ConnectedDevice) {
    this._connectedDevice = connectedDevice;
    const lifecycle = new Lifecycle(connectedDevice);
    this._cpcl = CPCL.generic(lifecycle);
    this._tspl = TSPL.generic(lifecycle);
    this._esc = ESC.generic(lifecycle);
  }

  isConnected(): boolean {
    return this._connectedDevice != null;
  }

  connectedDevice(): ConnectedDevice | undefined {
    return this._connectedDevice;
  }

  cpcl(): GenericCPCL {
    if (!this._connectedDevice) throw Error("The device is not connected");
    return this._cpcl!;
  }
  tspl(): GenericTSPL {
    if (!this._connectedDevice) throw Error("The device is not connected");
    return this._tspl!;
  }
  esc(): GenericESC {
    if (!this._connectedDevice) throw Error("The device is not connected");
    return this._esc!;
  }
}

export default {
  install: function () {
    Vue.prototype.$printer = new Printer();
  },
};