| <!DOCTYPE html> |
| <!-- |
| Copyright 2015 The Chromium Authors. All rights reserved. |
| Use of this source code is governed by a BSD-style license that can be |
| found in the LICENSE file. |
| --> |
| |
| <link rel="import" href="/extras/tquery/filter.html"> |
| |
| <polymer-element name='tv-e-tquery-filter-is-top-level' |
| extends='tv-e-tquery-filter'> |
| <script> |
| 'use strict'; |
| |
| Polymer({ |
| ready: function() { |
| this.subExpression_ = undefined; |
| }, |
| |
| get scriptName() { |
| return 'isTopLevel'; |
| }, |
| |
| get scriptValue() { |
| return function(subExpression) { |
| var filter = document.createElement(this.element.name); |
| filter.subExpression = subExpression; |
| return filter; |
| }.bind(this); |
| }, |
| |
| set subExpression(expr) { |
| this.subExpression_ = this.normalizeFilterExpression(expr); |
| }, |
| |
| get subExpression() { |
| return this.subExpression_; |
| }, |
| |
| evaluate: function(context) { |
| if (context.ancestors.length > 0) |
| return false; |
| if (!this.subExpression) |
| return true; |
| return this.subExpression.evaluate(context); |
| } |
| }); |
| </script> |
| </polymer-element> |