| part of html_common; |
| |
| /// Converts a JavaScript object with properties into a Dart Map. |
| /// Not suitable for nested objects. |
| Map<String, dynamic> convertNativeToDart_Dictionary(object) { |
| if (object == null) return null; |
| var dict = <String, dynamic>{}; |
| var keys = JS('JSExtendableArray', 'Object.getOwnPropertyNames(#)', object); |
| for (final key in keys) { |
| dict[key] = JS('var', '#[#]', object, key); |
| } |
| return dict; |
| } |
| |
| /// Converts a flat Dart map into a JavaScript object with properties. |
| convertDartToNative_Dictionary(Map dict, [void postCreate(Object f)]) { |
| if (dict == null) return null; |
| var object = JS('var', '{}'); |
| if (postCreate != null) { |
| postCreate(object); |
| } |
| dict.forEach((key, value) { |
| JS('void', '#[#] = #', object, key, value); |
| }); |
| return object; |
| } |
| |
| /** |
| * Ensures that the input is a JavaScript Array. |
| * |
| * Creates a new JavaScript array if necessary, otherwise returns the original. |
| */ |
| List convertDartToNative_StringArray(List<String> input) { |
| // TODO(sra). Implement this. |
| return input; |
| } |
| |
| DateTime convertNativeToDart_DateTime(date) { |
| var millisSinceEpoch = JS('int', '#.getTime()', date); |
| return new DateTime.fromMillisecondsSinceEpoch(millisSinceEpoch, isUtc: true); |
| } |
| |
| convertDartToNative_DateTime(DateTime date) { |
| return JS('', 'new Date(#)', date.millisecondsSinceEpoch); |
| } |
| |
| convertDartToNative_PrepareForStructuredClone(value) => |
| new _StructuredCloneDart2Js() |
| .convertDartToNative_PrepareForStructuredClone(value); |
| |
| convertNativeToDart_AcceptStructuredClone(object, {mustCopy: false}) => |
| new _AcceptStructuredCloneDart2Js() |
| .convertNativeToDart_AcceptStructuredClone(object, mustCopy: mustCopy); |
| |
| class _StructuredCloneDart2Js extends _StructuredClone { |
| newJsMap() => JS('var', '{}'); |
| putIntoMap(map, key, value) => JS('void', '#[#] = #', map, key, value); |
| newJsList(length) => JS('JSExtendableArray', 'new Array(#)', length); |
| cloneNotRequired(e) => |
| (e is NativeByteBuffer || e is NativeTypedData || e is MessagePort); |
| } |
| |
| class _AcceptStructuredCloneDart2Js extends _AcceptStructuredClone { |
| List newJsList(length) => JS('JSExtendableArray', 'new Array(#)', length); |
| List newDartList(length) => newJsList(length); |
| bool identicalInJs(a, b) => identical(a, b); |
| |
| void forEachJsField(object, action(key, value)) { |
| for (final key in JS('JSExtendableArray', 'Object.keys(#)', object)) { |
| action(key, JS('var', '#[#]', object, key)); |
| } |
| } |
| } |
| |
| bool isJavaScriptDate(value) => JS('bool', '# instanceof Date', value); |
| bool isJavaScriptRegExp(value) => JS('bool', '# instanceof RegExp', value); |
| bool isJavaScriptArray(value) => JS('bool', '# instanceof Array', value); |
| bool isJavaScriptSimpleObject(value) { |
| var proto = JS('', 'Object.getPrototypeOf(#)', value); |
| return JS('bool', '# === Object.prototype', proto) || |
| JS('bool', '# === null', proto); |
| } |
| |
| bool isImmutableJavaScriptArray(value) => |
| JS('bool', r'!!(#.immutable$list)', value); |
| bool isJavaScriptPromise(value) => |
| JS('bool', r'typeof Promise != "undefined" && # instanceof Promise', value); |
| |
| Future convertNativePromiseToDartFuture(promise) { |
| var completer = new Completer(); |
| var then = convertDartClosureToJS((result) => completer.complete(result), 1); |
| var error = |
| convertDartClosureToJS((result) => completer.completeError(result), 1); |
| var newPromise = JS('', '#.then(#)["catch"](#)', promise, then, error); |
| return completer.future; |
| } |
| |
| const String _serializedScriptValue = 'num|String|bool|' |
| 'JSExtendableArray|=Object|' |
| 'Blob|File|NativeByteBuffer|NativeTypedData|MessagePort' |
| // TODO(sra): Add Date, RegExp. |
| ; |
| const annotation_Creates_SerializedScriptValue = |
| const Creates(_serializedScriptValue); |
| const annotation_Returns_SerializedScriptValue = |
| const Returns(_serializedScriptValue); |