angular2/src/platform/dom/debug/by.js

Angular 2 - a web framework for modern web apps

'use strict';var lang_1 = require('angular2/src/facade/lang');
var dom_adapter_1 = require('angular2/src/platform/dom/dom_adapter');
/**
 * Predicates for use with {@link DebugElement}'s query functions.
 */
var By = (function () {
    function By() {
    }
    /**
     * Match all elements.
     *
     * ## Example
     *
     * {@example platform/dom/debug/ts/by/by.ts region='by_all'}
     */
    By.all = function () { return function (debugElement) { return true; }; };
    /**
     * Match elements by the given CSS selector.
     *
     * ## Example
     *
     * {@example platform/dom/debug/ts/by/by.ts region='by_css'}
     */
    By.css = function (selector) {
        return function (debugElement) {
            return lang_1.isPresent(debugElement.nativeElement) ?
                dom_adapter_1.DOM.elementMatches(debugElement.nativeElement, selector) :
                false;
        };
    };
    /**
     * Match elements that have the given directive present.
     *
     * ## Example
     *
     * {@example platform/dom/debug/ts/by/by.ts region='by_directive'}
     */
    By.directive = function (type) {
        return function (debugElement) { return debugElement.providerTokens.indexOf(type) !== -1; };
    };
    return By;
})();
exports.By = By;
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