ProxyHandler.js 787 B

123456789101112131415161718192021222324252627
  1. module.exports = ProxyHandler;
  2. function ProxyHandler(cbs) {
  3. this._cbs = cbs || {};
  4. }
  5. var EVENTS = require("./").EVENTS;
  6. Object.keys(EVENTS).forEach(function(name) {
  7. if (EVENTS[name] === 0) {
  8. name = "on" + name;
  9. ProxyHandler.prototype[name] = function() {
  10. if (this._cbs[name]) this._cbs[name]();
  11. };
  12. } else if (EVENTS[name] === 1) {
  13. name = "on" + name;
  14. ProxyHandler.prototype[name] = function(a) {
  15. if (this._cbs[name]) this._cbs[name](a);
  16. };
  17. } else if (EVENTS[name] === 2) {
  18. name = "on" + name;
  19. ProxyHandler.prototype[name] = function(a, b) {
  20. if (this._cbs[name]) this._cbs[name](a, b);
  21. };
  22. } else {
  23. throw Error("wrong number of arguments");
  24. }
  25. });