javascript/selenium-atoms/se_element.js

/**
Copyright 2010 WebDriver committers
Copyright 2010 Google Inc.

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

     http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/

/**
 * @fileoverview Selenium methods for querying an element.
 */

goog.provide('core.element');


goog.require('bot.dom');
goog.require('core.Error');
goog.require('core.locators');


/**
 * @param {string} locator A selenium attribute locator to use.
 * @return {?string} The value of the given attribute or null.
 * @private
 */
core.element.findAttribute_ = function(locator) {
  // Split into locator + attributeName
  var attributePos = locator.lastIndexOf('@');
  var elementLocator = locator.slice(0, attributePos);
  var attributeName = locator.slice(attributePos + 1);

  // Find the element.
  var element = core.locators.findElement(elementLocator);
  return bot.dom.getAttribute(element, attributeName);
};


/**
 * @param {string} locator The selenium attribute locator to use.
 * @return {string} The value of the attribute.
 * @throws {core.Error} If the attribute cannot be found.
 */
core.element.getAttribute = function(locator) {
  var result = core.element.findAttribute_(locator);
  if (result == null) {
    throw new core.Error('Could not find element attribute: ' + locator);
  }
  return result;
};