| // Copyright (c) 2013, the Dart project authors. Please see the AUTHORS file |
| // for details. All rights reserved. Use of this source code is governed by a |
| // BSD-style license that can be found in the LICENSE file. |
| |
| library eval_box_element; |
| |
| import 'dart:async'; |
| import 'dart:html'; |
| import 'observatory_element.dart'; |
| import 'package:polymer/polymer.dart'; |
| |
| |
| typedef Future evalType(String text); |
| |
| |
| @CustomTag('eval-box') |
| class EvalBoxElement extends ObservatoryElement { |
| @observable String text; |
| @observable String lineMode = "1-line"; |
| int _exprCount = 0; |
| |
| @published evalType callback; |
| @observable ObservableList results = toObservable([]); |
| |
| void updateLineMode(Event e, var detail, Node target) { |
| lineMode = (e.target as InputElement).value; |
| if (lineMode == '1-line' && text != null) { |
| text = text.replaceAll('\n', ' '); |
| } |
| } |
| |
| void evaluate(Event e, var detail, Node target) { |
| // Prevent any form action. |
| e.preventDefault(); |
| |
| // Clear the text box. |
| var expr = text; |
| text = ''; |
| |
| // Use provided callback to eval the expression. |
| if (callback != null) { |
| var map = toObservable({}); |
| map['id'] = (_exprCount++).toString(); |
| map['expr'] = expr; |
| results.insert(0, map); |
| callback(expr).then((result) { |
| map['value'] = result; |
| }).catchError((e, st) { |
| map['error'] = e.message; |
| app.handleException(e, st); |
| }); |
| } |
| } |
| |
| void selectExpr(MouseEvent e) { |
| assert(e.target is Element); |
| Element targetElement = e.target; |
| text = targetElement.getAttribute('expr'); |
| } |
| |
| void closeItem(MouseEvent e) { |
| assert(e.target is Element); |
| Element targetElement = e.target; |
| var closeId = targetElement.getAttribute('closeId'); |
| results.removeWhere((item) => item['id'] == closeId); |
| } |
| |
| EvalBoxElement.created() : super.created(); |
| } |