gerrit.onap Code Review - aai/esr-gui.git/blob

   1 "use strict";
   2 module.exports = function(Promise) {
   3 var errors = require("./errors.js");
   4 var async = require("./async.js");
   5 var CancellationError = errors.CancellationError;
   6
   7 Promise.prototype._cancel = function (reason) {
   8     if (!this.isCancellable()) return this;
   9     var parent;
  10     var promiseToReject = this;
  11     while ((parent = promiseToReject._cancellationParent) !== undefined &&
  12         parent.isCancellable()) {
  13         promiseToReject = parent;
  14     }
  15     this._unsetCancellable();
  16     promiseToReject._target()._rejectCallback(reason, false, true);
  17 };
  18
  19 Promise.prototype.cancel = function (reason) {
  20     if (!this.isCancellable()) return this;
  21     if (reason === undefined) reason = new CancellationError();
  22     async.invokeLater(this._cancel, this, reason);
  23     return this;
  24 };
  25
  26 Promise.prototype.cancellable = function () {
  27     if (this._cancellable()) return this;
  28     async.enableTrampoline();
  29     this._setCancellable();
  30     this._cancellationParent = undefined;
  31     return this;
  32 };
  33
  34 Promise.prototype.uncancellable = function () {
  35     var ret = this.then();
  36     ret._unsetCancellable();
  37     return ret;
  38 };
  39
  40 Promise.prototype.fork = function (didFulfill, didReject, didProgress) {
  41     var ret = this._then(didFulfill, didReject, didProgress,
  42                          undefined, undefined);
  43
  44     ret._setCancellable();
  45     ret._cancellationParent = undefined;
  46     return ret;
  47 };
  48 };