| // 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 json_view_element; |
| |
| import 'package:polymer/polymer.dart'; |
| import 'observatory_element.dart'; |
| import 'package:observatory/service.dart'; |
| |
| class JsonPrettyPrinter { |
| String prettyPrint(ServiceMap map) { |
| _buffer.clear(); |
| _buffer.write('{\n'); |
| _printMap(map, 0); |
| _buffer.write('}\n'); |
| return _buffer.toString(); |
| } |
| |
| void _printMap(ObservableMap map, int depth) { |
| if (_seen.contains(map)) { |
| return; |
| } |
| _seen.add(map); |
| for (var k in map.keys) { |
| var v = map[k]; |
| if (v is Map) { |
| _writeIndent(depth); |
| _buffer.write('"$k": {\n'); |
| _printMap(v, depth + 1); |
| _writeIndent(depth); |
| _buffer.write('}\n'); |
| } else if (v is List) { |
| _writeIndent(depth); |
| _buffer.write('"$k": [\n'); |
| _printList(v, depth + 1); |
| _writeIndent(depth); |
| _buffer.write(']\n'); |
| } else { |
| _writeIndent(depth); |
| _buffer.write('"$k": $v'); |
| _buffer.write('\n'); |
| } |
| } |
| _seen.remove(map); |
| } |
| |
| void _printList(ObservableList list, int depth) { |
| if (_seen.contains(list)) { |
| return; |
| } |
| _seen.add(list); |
| for (var v in list) { |
| if (v is Map) { |
| _writeIndent(depth); |
| _buffer.write('{\n'); |
| _printMap(v, depth + 1); |
| _writeIndent(depth); |
| _buffer.write('}\n'); |
| } else if (v is List) { |
| _writeIndent(depth); |
| _buffer.write('[\n'); |
| _printList(v, depth + 1); |
| _writeIndent(depth); |
| _buffer.write(']\n'); |
| } else { |
| _writeIndent(depth); |
| _buffer.write(v); |
| _buffer.write('\n'); |
| } |
| } |
| _seen.remove(list); |
| } |
| |
| void _writeIndent(int depth) { |
| const tab = ' '; // 2 spaces. |
| _buffer.write(tab * depth); |
| } |
| |
| final _buffer = new StringBuffer(); |
| final _seen = new Set(); |
| } |
| |
| |
| @CustomTag('json-view') |
| class JsonViewElement extends ObservatoryElement { |
| @published ServiceMap map; |
| @observable String mapAsString; |
| JsonViewElement.created() : super.created(); |
| |
| void mapChanged(oldValue) { |
| var jpp = new JsonPrettyPrinter(); |
| mapAsString = jpp.prettyPrint(map); |
| } |
| } |