Function prepareDescriptorsForObject

history.js:714–727

* Adds the missing property in descriptor * * @param {Object} object An object that stores values * @param {String} prop Name of the property in the object * @param {Object|null} descriptor Descriptor * @return {Object} Returns the generated descriptor

(object, prop, descriptor)

   * @return {Object} Returns the generated descriptor
   */
  function prepareDescriptorsForObject(object, prop, descriptor) {
    descriptor = descriptor || {};
    // the default for the object 'location' is the standard object 'window.location'
    object = object === locationDescriptors ? windowLocation : object;
    // setter for object properties
    descriptor.set = (descriptor.set || function(value) {
      object[prop] = value;
    });
    // getter for object properties
    descriptor.get = (descriptor.get || function() {
      return object[prop];
    });
    return descriptor;
  }

  /**
   * Wrapper for the methods 'addEventListener/attachEvent' in the context of the 'window'