Dollar shortcuts for less typing, i.e. $model, $xpath, $linkText

onPrepare_dollars.js

/**
 * Dollar shortcuts for less typing, i.e. $model, $xpath, $linkText...
 *
 * @example
 * var nameElm = $model('user.name');
 * // Equivalent to
 * var nameElm = element(by.model('user.name'));
 *
 * @example
 * var chainedElm =
 *   $model('container').$binding('user.name');
 * // Equivalent to
 * var chainedElm =
 *   element(by.model('container')).element(by.binding('user.name'));
 *
 * @example
 * var chainedLastElm =
 *   $model('container').$$binding('user.name').last();
 * // Equivalent to
 * var chainedLastElm =
 *   element(by.model('container')).all(by.binding('user.name')).last();
 */
var LOCATORS = ['model', 'binding', 'exactBinding', 'repeater', 'options',
'linkText', 'partialLinkText', 'xpath', 'buttonText', 'partialButtonText',
'cssContainingText', 'name', 'id', 'js', 'tagName'];

/**
 * Current workaround until https://github.com/angular/protractor/issues/1102
 * @type {Function}
 */
var ElementFinder = $('').constructor;
var ElementArrayFinder = $$('').constructor;

LOCATORS.forEach(function(locatorName) {
    global['$' + locatorName] = function() {
        return element(By[locatorName].apply(By, arguments));
    };

    global['$$' + locatorName] = function() {
        return element.all(By[locatorName].apply(By, arguments));
    };

    ElementFinder.prototype['$' + locatorName] = function() {
        return this.element(By[locatorName].apply(By, arguments));
    };

    ElementArrayFinder.prototype['$$' + locatorName] = function() {
        return this.all(By[locatorName].apply(By, arguments));
    };
});