Port DocumentFragment to the new wrapperless DOM.

client/html/frog/html_frog.dart

 #library('html');
 
 // Copyright (c) 2012, 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.
 
 // DO NOT EDIT
 // Auto-generated dart:html library.
 
 
@@ skipping 4018 matching lines @@
 class _ClipboardImpl implements Clipboard native "*Clipboard" {
 
   String dropEffect;
 
   String effectAllowed;
 
   final _FileListImpl files;
 
   final _DataTransferItemListImpl items;
 
-  final List types;
+  final List<String> types;
 
   void clearData([String type = null]) native;
 
   void getData(String type) native;
 
   bool setData(String type, String data) native;
 
   void setDragImage(_ImageElementImpl image, int x, int y) native;
 }
 
@@ skipping 406 matching lines @@
 }
 
 class _DataTransferItemImpl implements DataTransferItem native "*DataTransferItem" {
 
   final String kind;
 
   final String type;
 
   _BlobImpl getAsFile() native;
 
-  void getAsString(StringCallback callback) native;
+  void getAsString([StringCallback callback = null]) native;
 }
 
 class _DataTransferItemListImpl implements DataTransferItemList native "*DataTransferItemList" {
 
   final int length;
 
   void add(var data_OR_file, [String type = null]) native;
 
   void clear() native;
 
@@ skipping 211 matching lines @@
   _TextImpl _createTextNode(String data) native "return this.parentNode.createTextNode(data);";
 
   _TouchImpl createTouch(_WindowImpl window, _EventTargetImpl target, int identifier, int pageX, int pageY, int screenX, int screenY, int webkitRadiusX, int webkitRadiusY, num webkitRotationAngle, num webkitForce) native "return this.parentNode.createTouch(window, target, identifier, pageX, pageY, screenX, screenY, webkitRadiusX, webkitRadiusY, webkitRotationAngle, webkitForce);";
 
   _TouchListImpl _createTouchList() native "return this.parentNode.createTouchList();";
 
   _ElementImpl elementFromPoint(int x, int y) native "return this.parentNode.elementFromPoint(x, y);";
 
   bool execCommand(String command, bool userInterface, String value) native "return this.parentNode.execCommand(command, userInterface, value);";
 
-  Object getCSSCanvasContext(String contextId, String name, int width, int height) native "return this.parentNode.getCSSCanvasContext(contextId, name, width, height);";
+  _CanvasRenderingContextImpl getCSSCanvasContext(String contextId, String name, int width, int height) native "return this.parentNode.getCSSCanvasContext(contextId, name, width, height);";
 
   bool queryCommandEnabled(String command) native "return this.parentNode.queryCommandEnabled(command);";
 
   bool queryCommandIndeterm(String command) native "return this.parentNode.queryCommandIndeterm(command);";
 
   bool queryCommandState(String command) native "return this.parentNode.queryCommandState(command);";
 
   bool queryCommandSupported(String command) native "return this.parentNode.queryCommandSupported(command);";
 
   String queryCommandValue(String command) native "return this.parentNode.queryCommandValue(command);";
@@ skipping 119 matching lines @@
   EventListenerList get submit() => _get('submit');
 
   EventListenerList get touchCancel() => _get('touchcancel');
 
   EventListenerList get touchEnd() => _get('touchend');
 
   EventListenerList get touchMove() => _get('touchmove');
 
   EventListenerList get touchStart() => _get('touchstart');
 }
+// Copyright (c) 2011, 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.
+
+class FilteredElementList implements ElementList {
+  final Node _node;
+  final NodeList _childNodes;
+
+  FilteredElementList(Node node): _childNodes = node.nodes, _node = node;
+
+  // We can't memoize this, since it's possible that children will be messed
+  // with externally to this class.
+  //
+  // TODO(nweiz): Do we really need to copy the list to make the types work out?
+  List<Element> get _filtered() =>
+    new List.from(_childNodes.filter((n) => n is Element));
+
+  // Don't use _filtered.first so we can short-circuit once we find an element.
+  Element get first() {
+    for (var node in _childNodes) {
+      if (node is Element) {
+        return node;
+      }
+    }
+    return null;
+  }
+
+  void forEach(void f(Element element)) {
+    _filtered.forEach(f);
+  }
+
+  void operator []=(int index, Element value) {
+    this[index].replaceWith(value);
+  }
+
+  void set length(int newLength) {
+    var len = this.length;
+    if (newLength >= len) {
+      return;
+    } else if (newLength < 0) {
+      throw const IllegalArgumentException("Invalid list length");
+    }
+
+    removeRange(newLength - 1, len - newLength);
+  }
+
+  void add(Element value) {
+    _childNodes.add(value);
+  }
+
+  void addAll(Collection<Element> collection) {
+    collection.forEach(add);
+  }
+
+  void addLast(Element value) {
+    add(value);
+  }
+
+  void sort(int compare(Element a, Element b)) {
+    throw const UnsupportedOperationException('TODO(jacobr): should we impl?');
+  }
+
+  void copyFrom(List<Object> src, int srcStart, int dstStart, int count) {
+    throw const NotImplementedException();
+  }
+
+  void setRange(int start, int length, List from, [int startFrom = 0]) {
+    throw const NotImplementedException();
+  }
+
+  void removeRange(int start, int length) {
+    _filtered.getRange(start, length).forEach((el) => el.remove());
+  }
+
+  void insertRange(int start, int length, [initialValue = null]) {
+    throw const NotImplementedException();
+  }
+
+  void clear() {
+    // Currently, ElementList#clear clears even non-element nodes, so we follow
+    // that behavior.
+    _childNodes.clear();
+  }
+
+  Element removeLast() {
+    var last = this.last();
+    if (last != null) {
+      last.remove();
+    }
+    return last;
+  }
+
+  Collection map(f(Element element)) => _filtered.map(f);
+  Collection<Element> filter(bool f(Element element)) => _filtered.filter(f);
+  bool every(bool f(Element element)) => _filtered.every(f);
+  bool some(bool f(Element element)) => _filtered.some(f);
+  bool isEmpty() => _filtered.isEmpty();
+  int get length() => _filtered.length;
+  Element operator [](int index) => _filtered[index];
+  Iterator<Element> iterator() => _filtered.iterator();
+  List<Element> getRange(int start, int length) =>
+    _filtered.getRange(start, length);
+  int indexOf(Element element, [int start = 0]) =>
+    _filtered.indexOf(element, start);
+
+  int lastIndexOf(Element element, [int start = null]) {
+    if (start === null) start = length - 1;
+    return _filtered.lastIndexOf(element, start);
+  }
+
+  Element last() => _filtered.last();
+}
+
+Future<CSSStyleDeclaration> _emptyStyleFuture() {
+  return _createMeasurementFuture(() => new Element.tag('div').style,
+                                  new Completer<CSSStyleDeclaration>());
+}
+
+class EmptyElementRect implements ElementRect {
+  final ClientRect client = const _SimpleClientRect(0, 0, 0, 0);
+  final ClientRect offset = const _SimpleClientRect(0, 0, 0, 0);
+  final ClientRect scroll = const _SimpleClientRect(0, 0, 0, 0);
+  final ClientRect bounding = const _SimpleClientRect(0, 0, 0, 0);
+  final List<ClientRect> clientRects = const <ClientRect>[];
+
+  const EmptyElementRect();
+}
 
 class _DocumentFragmentImpl extends _NodeImpl implements DocumentFragment native "*DocumentFragment" {
+  ElementList _elements;
+
+  ElementList get elements() {
+    if (_elements == null) {
+      _elements = new FilteredElementList(this);
+    }
+    return _elements;
+  }
+
+  // TODO: The type of value should be Collection<Element>. See http://b/5392897
+  void set elements(value) {
+    // Copy list first since we don't want liveness during iteration.
+    List copy = new List.from(value);
+    final elements = this.elements;
+    elements.clear();
+    elements.addAll(copy);
+  }
+
+  ElementList queryAll(String selectors) =>
+    new _FrozenElementList._wrap(_querySelectorAll(selectors));
+
+  String get innerHTML() {
+    var e = new Element.tag("div");
+    e.nodes.add(this.clone(true));
+    return e.innerHTML;
+  }
+
+  String get outerHTML() => innerHTML;
+
+  // TODO(nweiz): Do we want to support some variant of innerHTML for XML and/or
+  // SVG strings?
+  void set innerHTML(String value) {
+    this.nodes.clear();
+
+    var e = new Element.tag("div");
+    e.innerHTML = value;
+
+    // Copy list first since we don't want liveness during iteration.
+    List nodes = new List.from(e.nodes);
+    this.nodes.addAll(nodes);
+  }
+
+  Node _insertAdjacentNode(String where, Node node) {
+    switch (where.toLowerCase()) {
+      case "beforebegin": return null;
+      case "afterend": return null;
+      case "afterbegin":
+        this.insertBefore(node, nodes.first);
+        return node;
+      case "beforeend":
+        this.nodes.add(node);
+        return node;
+      default:
+        throw new IllegalArgumentException("Invalid position ${where}");
+    }
+  }
+
+  Element insertAdjacentElement([String where = null, Element element = null])
+    => this._insertAdjacentNode(where, element);
+
+  void insertAdjacentText([String where = null, String text = null]) {
+    this._insertAdjacentNode(where, new Text(text));
+  }
+
+  void insertAdjacentHTML(
+      [String position_OR_where = null, String text = null]) {
+    this._insertAdjacentNode(
+      position_OR_where, new DocumentFragment.html(text));
+  }
+
+  Future<ElementRect> get rect() {
+    return _createMeasurementFuture(() => const EmptyElementRect(),
+                                    new Completer<ElementRect>());
+  }
+
+  // If we can come up with a semi-reasonable default value for an Element
+  // getter, we'll use it. In general, these return the same values as an
+  // element that has no parent.
+  String get contentEditable() => "false";
+  bool get isContentEditable() => false;
+  bool get draggable() => false;
+  bool get hidden() => false;
+  bool get spellcheck() => false;
+  int get tabIndex() => -1;
+  String get id() => "";
+  String get title() => "";
+  String get tagName() => "";
+  String get webkitdropzone() => "";
+  Element get firstElementChild() => elements.first();
+  Element get lastElementChild() => elements.last();
+  Element get nextElementSibling() => null;
+  Element get previousElementSibling() => null;
+  Element get offsetParent() => null;
+  Element get parent() => null;
+  Map<String, String> get attributes() => const {};
+  // Issue 174: this should be a const set.
+  Set<String> get classes() => new Set<String>();
+  Map<String, String> get dataAttributes() => const {};
+  CSSStyleDeclaration get style() => new Element.tag('div').style;
+  Future<CSSStyleDeclaration> get computedStyle() =>
+      _emptyStyleFuture();
+  Future<CSSStyleDeclaration> getComputedStyle(String pseudoElement) =>
+      _emptyStyleFuture();
+  bool matchesSelector([String selectors]) => false;
+
+  // Imperative Element methods are made into no-ops, as they are on parentless
+  // elements.
+  void blur() {}
+  void focus() {}
+  void scrollByLines([int lines]) {}
+  void scrollByPages([int pages]) {}
+  void scrollIntoView([bool centerIfNeeded]) {}
+
+  // Setters throw errors rather than being no-ops because we aren't going to
+  // retain the values that were set, and erroring out seems clearer.
+  void set attributes(Map<String, String> value) {
+    throw new UnsupportedOperationException(
+      "Attributes can't be set for document fragments.");
+  }
+
+  void set classes(Collection<String> value) {
+    throw new UnsupportedOperationException(
+      "Classes can't be set for document fragments.");
+  }
+
+  void set dataAttributes(Map<String, String> value) {
+    throw new UnsupportedOperationException(
+      "Data attributes can't be set for document fragments.");
+  }
+
+  void set contentEditable(String value) {
+    throw new UnsupportedOperationException(
+      "Content editable can't be set for document fragments.");
+  }
+
+  String get dir() {
+    throw new UnsupportedOperationException(
+      "Document fragments don't support text direction.");
+  }
+
+  void set dir(String value) {
+    throw new UnsupportedOperationException(
+      "Document fragments don't support text direction.");
+  }
+
+  void set draggable(bool value) {
+    throw new UnsupportedOperationException(
+      "Draggable can't be set for document fragments.");
+  }
+
+  void set hidden(bool value) {
+    throw new UnsupportedOperationException(
+      "Hidden can't be set for document fragments.");
+  }
+
+  void set id(String value) {
+    throw new UnsupportedOperationException(
+      "ID can't be set for document fragments.");
+  }
+
+  String get lang() {
+    throw new UnsupportedOperationException(
+      "Document fragments don't support language.");
+  }
+
+  void set lang(String value) {
+    throw new UnsupportedOperationException(
+      "Document fragments don't support language.");
+  }
+
+  void set scrollLeft(int value) {
+    throw new UnsupportedOperationException(
+      "Document fragments don't support scrolling.");
+  }
+
+  void set scrollTop(int value) {
+    throw new UnsupportedOperationException(
+      "Document fragments don't support scrolling.");
+  }
+
+  void set spellcheck(bool value) {
+     throw new UnsupportedOperationException(
+      "Spellcheck can't be set for document fragments.");
+  }
+
+  void set tabIndex(int value) {
+    throw new UnsupportedOperationException(
+      "Tab index can't be set for document fragments.");
+  }
+
+  void set title(String value) {
+    throw new UnsupportedOperationException(
+      "Title can't be set for document fragments.");
+  }
+
+  void set webkitdropzone(String value) {
+    throw new UnsupportedOperationException(
+      "WebKit drop zone can't be set for document fragments.");
+  }
+
+
+  _DocumentFragmentEventsImpl get on() =>
+    new _DocumentFragmentEventsImpl(this);
 
   _ElementImpl query(String selectors) native "return this.querySelector(selectors);";
 
   _NodeListImpl _querySelectorAll(String selectors) native "return this.querySelectorAll(selectors);";
+
+}
+
+class _DocumentFragmentEventsImpl extends _ElementEventsImpl implements DocumentFragmentEvents {
+  _DocumentFragmentEventsImpl(_ptr) : super(_ptr);
 }
 
 class _DocumentTypeImpl extends _NodeImpl implements DocumentType native "*DocumentType" {
 
   final _NamedNodeMapImpl entities;
 
   final String internalSubset;
 
   final String name;
 
@@ skipping 617 matching lines @@
   bool spellcheck;
 
   final _CSSStyleDeclarationImpl style;
 
   int tabIndex;
 
   final String tagName;
 
   String title;
 
+  bool translate;
+
   final String webkitRegionOverflow;
 
   String webkitdropzone;
 
   _ElementEventsImpl get on() =>
     new _ElementEventsImpl(this);
 
   void blur() native;
 
   void click() native;
@@ skipping 1200 matching lines @@
   _IDBObjectStoreImpl createObjectStore(String name) native;
 
   void deleteObjectStore(String name) native;
 
   bool dispatchEvent(_EventImpl evt) native;
 
   void removeEventListener(String type, EventListener listener, [bool useCapture = null]) native;
 
   _IDBVersionChangeRequestImpl setVersion(String version) native;
 
-  _IDBTransactionImpl transaction(var storeName_OR_storeNames, int mode) native;
+  _IDBTransactionImpl transaction(var storeName_OR_storeNames, [int mode = null]) native;
 }
 
 class _IDBDatabaseErrorImpl implements IDBDatabaseError native "*IDBDatabaseError" {
 
   int code;
 
   String message;
 }
 
 class _IDBDatabaseExceptionImpl implements IDBDatabaseException native "*IDBDatabaseException" {
@@ skipping 100 matching lines @@
   final _IDBTransactionImpl transaction;
 
   _IDBRequestImpl add(Dynamic value, [_IDBKeyImpl key = null]) native;
 
   _IDBRequestImpl clear() native;
 
   _IDBRequestImpl count([_IDBKeyRangeImpl range = null]) native;
 
   _IDBIndexImpl createIndex(String name, String keyPath) native;
 
-  _IDBRequestImpl delete(_IDBKeyImpl key) native;
+  _IDBRequestImpl delete(var key_OR_keyRange) native;
 
   void deleteIndex(String name) native;
 
   _IDBRequestImpl getObject(_IDBKeyImpl key) native;
 
   _IDBIndexImpl index(String name) native;
 
   _IDBRequestImpl openCursor([_IDBKeyRangeImpl range = null, int direction = null]) native;
 
   _IDBRequestImpl put(Dynamic value, [_IDBKeyImpl key = null]) native;
@@ skipping 6872 matching lines @@
 
   factory Uint8ClampedArray.fromList(List<int> list) => _construct_Uint8ClampedArray(list);
 
   factory Uint8ClampedArray.fromBuffer(ArrayBuffer buffer) => _construct_Uint8ClampedArray(buffer);
 
   static _construct_Uint8ClampedArray(arg) native 'return new Uint8ClampedArray(arg);';
 
   // Use implementation from Uint8Array.
   // final int length;
 
+  void setElements(Object array, [int offset = null]) native;
+
   _Uint8ClampedArrayImpl subarray(int start, [int end = null]) native;
 }
 
 class _UnknownElementImpl extends _ElementImpl implements UnknownElement native "*HTMLUnknownElement" {
 }
 
 class _ValidityStateImpl implements ValidityState native "*ValidityState" {
 
   final bool customError;
 
@@ skipping 999 matching lines @@
 
 class _WebGLVertexArrayObjectOESImpl implements WebGLVertexArrayObjectOES native "*WebGLVertexArrayObjectOES" {
 }
 
 class _WebKitCSSRegionRuleImpl extends _CSSRuleImpl implements WebKitCSSRegionRule native "*WebKitCSSRegionRule" {
 
   final _CSSRuleListImpl cssRules;
 }
 
 class _WebKitNamedFlowImpl implements WebKitNamedFlow native "*WebKitNamedFlow" {
+
+  final bool overflow;
 }
 
 class _WebSocketImpl extends _EventTargetImpl implements WebSocket native "*WebSocket" {
 
   static final int CLOSED = 3;
 
   static final int CLOSING = 2;
 
   static final int CONNECTING = 0;
 
@@ skipping 4052 matching lines @@
 interface Clipboard {
 
   String dropEffect;
 
   String effectAllowed;
 
   final FileList files;
 
   final DataTransferItemList items;
 
-  final List types;
+  final List<String> types;
 
   void clearData([String type]);
 
   void getData(String type);
 
   bool setData(String type, String data);
 
   void setDragImage(ImageElement image, int x, int y);
 }
 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
@@ skipping 526 matching lines @@
 // WARNING: Do not edit - generated code.
 
 interface DataTransferItem {
 
   final String kind;
 
   final String type;
 
   Blob getAsFile();
 
-  void getAsString(StringCallback callback);
+  void getAsString([StringCallback callback]);
 }
 // Copyright (c) 2012, 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.
 
 // WARNING: Do not edit - generated code.
 
 interface DataTransferItemList {
 
   final int length;
@@ skipping 281 matching lines @@
   Text _createTextNode(String data);
 
   Touch createTouch(Window window, EventTarget target, int identifier, int pageX, int pageY, int screenX, int screenY, int webkitRadiusX, int webkitRadiusY, num webkitRotationAngle, num webkitForce);
 
   TouchList _createTouchList();
 
   Element elementFromPoint(int x, int y);
 
   bool execCommand(String command, bool userInterface, String value);
 
-  Object getCSSCanvasContext(String contextId, String name, int width, int height);
+  CanvasRenderingContext getCSSCanvasContext(String contextId, String name, int width, int height);
 
   bool queryCommandEnabled(String command);
 
   bool queryCommandIndeterm(String command);
 
   bool queryCommandState(String command);
 
   bool queryCommandSupported(String command);
 
   String queryCommandValue(String command);
@@ skipping 97 matching lines @@
   EventListenerList get touchEnd();
 
   EventListenerList get touchMove();
 
   EventListenerList get touchStart();
 }
 // Copyright (c) 2012, 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.
 
-// WARNING: Do not edit - generated code.
+interface DocumentFragment extends Element default _DocumentFragmentFactoryProvider {
+ 
+  DocumentFragment();
 
-interface DocumentFragment extends Node, NodeSelector {
+  DocumentFragment.html(String html);
+
+  // TODO(nweiz): enable these when XML and/or SVG are ported
+  // /** WARNING: Currently this doesn't work on Dartium (issue 649). */
+  // DocumentFragment.xml(String xml);
+  // DocumentFragment.svg(String svg);
+
+  DocumentFragment clone(bool deep);
+
+
+  DocumentFragmentEvents get on();
 
   Element query(String selectors);
 
   NodeList _querySelectorAll(String selectors);
+
+}
+
+interface DocumentFragmentEvents extends ElementEvents {
 }
 // Copyright (c) 2012, 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.
 
 // WARNING: Do not edit - generated code.
 
 interface DocumentType extends Node {
 
   final NamedNodeMap entities;
@@ skipping 382 matching lines @@
   bool spellcheck;
 
   final CSSStyleDeclaration style;
 
   int tabIndex;
 
   final String tagName;
 
   String title;
 
+  bool translate;
+
   final String webkitRegionOverflow;
 
   String webkitdropzone;
 
   ElementEvents get on();
 
   void blur();
 
   void click();
 
@@ skipping 1199 matching lines @@
   IDBObjectStore createObjectStore(String name);
 
   void deleteObjectStore(String name);
 
   bool dispatchEvent(Event evt);
 
   void removeEventListener(String type, EventListener listener, [bool useCapture]);
 
   IDBVersionChangeRequest setVersion(String version);
 
-  IDBTransaction transaction(var storeName_OR_storeNames, int mode);
+  IDBTransaction transaction(var storeName_OR_storeNames, [int mode]);
 }
 // Copyright (c) 2012, 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.
 
 // WARNING: Do not edit - generated code.
 
 interface IDBDatabaseError {
 
   int code;
@@ skipping 135 matching lines @@
   final IDBTransaction transaction;
 
   IDBRequest add(Dynamic value, [IDBKey key]);
 
   IDBRequest clear();
 
   IDBRequest count([IDBKeyRange range]);
 
   IDBIndex createIndex(String name, String keyPath);
 
-  IDBRequest delete(IDBKey key);
+  IDBRequest delete(var key_OR_keyRange);
 
   void deleteIndex(String name);
 
   IDBRequest getObject(IDBKey key);
 
   IDBIndex index(String name);
 
   IDBRequest openCursor([IDBKeyRange range, int direction]);
 
   IDBRequest put(Dynamic value, [IDBKey key]);
@@ skipping 6042 matching lines @@
 interface Uint8ClampedArray extends Uint8Array default _TypedArrayFactoryProvider {
 
   Uint8ClampedArray(int length);
 
   Uint8ClampedArray.fromList(List<int> list);
 
   Uint8ClampedArray.fromBuffer(ArrayBuffer buffer);
 
   final int length;
 
+  void setElements(Object array, [int offset]);
+
   Uint8ClampedArray subarray(int start, [int end]);
 }
 // Copyright (c) 2012, 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.
 
 // WARNING: Do not edit - generated code.
 
 interface UnknownElement extends Element {
 }
@@ skipping 1116 matching lines @@
 
   final CSSRuleList cssRules;
 }
 // Copyright (c) 2012, 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.
 
 // WARNING: Do not edit - generated code.
 
 interface WebKitNamedFlow {
+
+  final bool overflow;
 }
 // Copyright (c) 2012, 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.
 
 // WARNING: Do not edit - generated code.
 
 interface WebSocket extends EventTarget {
 
   static final int CLOSED = 3;
@@ skipping 1683 matching lines @@
     }
     element.remove();
     return element;
   }
 
   /** @domName Document.createElement */
   factory Element.tag(String tag) {
     return document._createElement(tag);
   }
 }
+
+class _DocumentFragmentFactoryProvider {
+  /** @domName Document.createDocumentFragment */
+  factory DocumentFragment() => document.createDocumentFragment();
+
+  factory DocumentFragment.html(String html) {
+    var fragment = new DocumentFragment();
+    fragment.innerHTML = html;
+    return fragment;
+  }
+
+  // TODO(nweiz): enable this when XML is ported.
+  // factory DocumentFragment.xml(String xml) {
+  //   var fragment = new DocumentFragment();
+  //   var e = new XMLElement.tag("xml");
+  //   e.innerHTML = xml;
+  //
+  //   // Copy list first since we don't want liveness during iteration.
+  //   List nodes = new List.from(e.nodes);
+  //   fragment.nodes.addAll(nodes);
+  //   return fragment;
+  // }
+
+  // TODO(nweiz): enable this when SVG is ported.
+  // factory DocumentFragment.svg(String svg) {
+  //   var fragment = new DocumentFragment();
+  //   var e = new SVGSVGElement();
+  //   e.innerHTML = svg;
+  //
+  //   // Copy list first since we don't want liveness during iteration.
+  //   List nodes = new List.from(e.nodes);
+  //   fragment.nodes.addAll(nodes);
+  //   return fragment;
+  // }
+}
 // Copyright (c) 2012, 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.
 
 class _AudioContextFactoryProvider {
 
   factory AudioContext() native '''
     var constructor = window.AudioContext || window.webkitAudioContext;
     return new constructor();
 ''';
@@ skipping 231 matching lines @@
     if (length < 0) throw new IllegalArgumentException('length');
     if (start < 0) throw new IndexOutOfRangeException(start);
     int end = start + length;
     if (end > a.length) throw new IndexOutOfRangeException(end);
     for (int i = start; i < end; i++) {
       accumulator.add(a[i]);
     }
     return accumulator;
   }
 }