Replace manual delegation in WebComponent with noSuchMethod.

lib/web_ui.dart

Index: lib/web_ui.dart
diff --git a/lib/web_ui.dart b/lib/web_ui.dart
index 9ae6f411d308cbbfa8bd96628d3036858b0b9a11..00ed711d23299bfb703088437b522752e02615bd 100644
--- a/lib/web_ui.dart
+++ b/lib/web_ui.dart
@@ -26,6 +26,7 @@ export 'watcher.dart';
 
 import 'dart:async';
 import 'dart:html';
+import 'dart:mirrors' show reflect;
 import 'package:meta/meta.dart';
 
 /**
@@ -124,27 +125,6 @@ abstract class WebComponent implements Element {
   /** Invoked when any attribute of the component is modified. */
   void attributeChanged(String name, String oldValue, String newValue) {}
 
-  get model => host.model;
-
-  void set model(newModel) {
-    host.model = newModel;
-  }
-
-  get templateInstance => host.templateInstance;
-  get isTemplate => host.isTemplate;
-  get ref => host.ref;
-  get content => host.content;
-  DocumentFragment createInstance(model, BindingDelegate delegate) =>
-      host.createInstance(model, delegate);
-  createBinding(String name, model, String path) =>
-      host.createBinding(name, model, path);
-  void bind(String name, model, String path) => host.bind(name, model, path);
-  void unbind(String name) => host.unbind(name);
-  void unbindAll() => host.unbindAll();
-  get bindings => host.bindings;
-  BindingDelegate get bindingDelegate => host.bindingDelegate;
-  set bindingDelegate(BindingDelegate value) { host.bindingDelegate = value; }
-
 
   /**
    * **Note**: This is an implementation helper and should not need to be called
@@ -327,424 +307,11 @@ abstract class WebComponent implements Element {
     insertionPoint.remove();
   }
 
-  // TODO(jmesserly): this forwarding is temporary until Dart supports
-  // subclassing Elements.
-  // TODO(jmesserly): we were missing the setter for title, are other things
-  // missing setters?
-
-  List<Node> get nodes => host.nodes;
-
-  set nodes(Iterable<Node> value) { host.nodes = value; }
-
-  /**
-   * Replaces this node with another node.
-   */
-  Node replaceWith(Node otherNode) { host.replaceWith(otherNode); }
-
-  /**
-   * Removes this node from the DOM.
-   */
-  void remove() => host.remove();
-
-  Node get nextNode => host.nextNode;
-
-  String get nodeName => host.nodeName;
-  Document get document => host.document;
-
-  Node get previousNode => host.previousNode;
-
-  String get text => host.text;
-
-  set text(String v) { host.text = v; }
-
-  bool contains(Node other) => host.contains(other);
-
-  bool hasChildNodes() => host.hasChildNodes();
-
-  Node insertBefore(Node newChild, Node refChild) =>
-    host.insertBefore(newChild, refChild);
-
-  Node insertAllBefore(Iterable<Node> newChild, Node refChild) =>
-    host.insertAllBefore(newChild, refChild);
-
-  Map<String, String> get attributes => host.attributes;
-  set attributes(Map<String, String> value) {
-    host.attributes = value;
-  }
-
-  List<Element> get elements => host.children;
-
-  set elements(List<Element> value) {
-    host.children = value;
-  }
-
-  List<Element> get children => host.children;
-
-  set children(List<Element> value) {
-    host.children = value;
-  }
-
-  Set<String> get classes => host.classes;
-
-  set classes(Iterable<String> value) {
-    host.classes = value;
-  }
-
-  CssRect get contentEdge => host.contentEdge;
-  CssRect get paddingEdge => host.paddingEdge;
-  CssRect get borderEdge => host.borderEdge;
-  CssRect get marginEdge => host.marginEdge;
-  Point get documentOffset => host.documentOffset;
-  Point offsetTo(Element parent) => host.offsetTo(parent);
-
-  Map<String, String> getNamespacedAttributes(String namespace) =>
-      host.getNamespacedAttributes(namespace);
-
-  CssStyleDeclaration getComputedStyle([String pseudoElement])
-    => host.getComputedStyle(pseudoElement);
-
-  Element clone(bool deep) => host.clone(deep);
-
-  Element get parent => host.parent;
-
-  Node get parentNode => host.parentNode;
-
-  String get nodeValue => host.nodeValue;
-
-  @deprecated
-  // TODO(sigmund): restore the old return type and call host.on when
-  // dartbug.com/8131 is fixed.
-  dynamic get on { throw new UnsupportedError('on is deprecated'); }
-
-  String get contentEditable => host.contentEditable;
-  set contentEditable(String v) { host.contentEditable = v; }
-
-  String get dir => host.dir;
-  set dir(String v) { host.dir = v; }
-
-  bool get draggable => host.draggable;
-  set draggable(bool v) { host.draggable = v; }
-
-  bool get hidden => host.hidden;
-  set hidden(bool v) { host.hidden = v; }
-
-  String get id => host.id;
-  set id(String v) { host.id = v; }
-
-  String get innerHTML => host.innerHtml;
-
-  void set innerHTML(String v) {
-    host.innerHtml = v;
-  }
-
-  String get innerHtml => host.innerHtml;
-  void set innerHtml(String v) {
-    host.innerHtml = v;
-  }
-
-  bool get isContentEditable => host.isContentEditable;
-
-  String get lang => host.lang;
-  set lang(String v) { host.lang = v; }
-
-  String get outerHtml => host.outerHtml;
-
-  bool get spellcheck => host.spellcheck;
-  set spellcheck(bool v) { host.spellcheck = v; }
-
-  int get tabIndex => host.tabIndex;
-  set tabIndex(int i) { host.tabIndex = i; }
-
-  String get title => host.title;
-
-  set title(String value) { host.title = value; }
-
-  bool get translate => host.translate;
-  set translate(bool v) { host.translate = v; }
-
-  String get dropzone => host.dropzone;
-  set dropzone(String v) { host.dropzone = v; }
-
-  void click() { host.click(); }
-
-  InputMethodContext getInputContext() => host.getInputContext();
-
-  Element insertAdjacentElement(String where, Element element) =>
-    host.insertAdjacentElement(where, element);
-
-  void insertAdjacentHtml(String where, String html) {
-    host.insertAdjacentHtml(where, html);
-  }
-
-  void insertAdjacentText(String where, String text) {
-    host.insertAdjacentText(where, text);
-  }
-
-  Map<String, String> get dataset => host.dataset;
-
-  set dataset(Map<String, String> value) {
-    host.dataset = value;
-  }
-
-  Element get nextElementSibling => host.nextElementSibling;
-
-  Element get offsetParent => host.offsetParent;
-
-  Element get previousElementSibling => host.previousElementSibling;
-
-  CssStyleDeclaration get style => host.style;
-
-  String get tagName => host.tagName;
-
-  String get pseudo => host.pseudo;
-
-  void set pseudo(String value) {
-    host.pseudo = value;
-  }
-
-  // Note: we are not polyfilling the shadow root here. This will be fixed when
-  // we migrate to the JS Shadow DOM polyfills. You can still use getShadowRoot
-  // to retrieve a node that behaves as the shadow root when Shadow DOM is not
-  // enabled.
-  ShadowRoot get shadowRoot => host.shadowRoot;
-
-  void blur() { host.blur(); }
-
-  void focus() { host.focus(); }
-
-  void scrollByLines(int lines) {
-    host.scrollByLines(lines);
-  }
-
-  void scrollByPages(int pages) {
-    host.scrollByPages(pages);
-  }
-
-  void scrollIntoView([ScrollAlignment alignment]) {
-    host.scrollIntoView(alignment);
-  }
-
-  bool matches(String selectors) => host.matches(selectors);
-
-  @deprecated
-  void requestFullScreen(int flags) { requestFullscreen(); }
-
-  void requestFullscreen() { host.requestFullscreen(); }
-
-  void requestPointerLock() { host.requestPointerLock(); }
-
-  Element query(String selectors) => host.query(selectors);
-
-  ElementList queryAll(String selectors) => host.queryAll(selectors);
-
-  HtmlCollection get $dom_children => host.$dom_children;
-
-  int get $dom_childElementCount => host.$dom_childElementCount;
-
-  String get className => host.className;
-  set className(String value) { host.className = value; }
-
-  @deprecated
-  int get clientHeight => client.height;
-
-  @deprecated
-  int get clientLeft => client.left;
-
-  @deprecated
-  int get clientTop => client.top;
-
-  @deprecated
-  int get clientWidth => client.width;
-
-  Rect get client => host.client;
-
-  Element get $dom_firstElementChild => host.$dom_firstElementChild;
-
-  Element get $dom_lastElementChild => host.$dom_lastElementChild;
-
-  @deprecated
-  int get offsetHeight => offset.height;
-
-  @deprecated
-  int get offsetLeft => offset.left;
-
-  @deprecated
-  int get offsetTop => offset.top;
-
-  @deprecated
-  int get offsetWidth => offset.width;
-
-  Rect get offset => host.offset;
-
-  int get scrollHeight => host.scrollHeight;
-
-  int get scrollLeft => host.scrollLeft;
-
-  int get scrollTop => host.scrollTop;
-
-  set scrollLeft(int value) { host.scrollLeft = value; }
-
-  set scrollTop(int value) { host.scrollTop = value; }
-
-  int get scrollWidth => host.scrollWidth;
-
-  String $dom_getAttribute(String name) =>
-      host.$dom_getAttribute(name);
-
-  String $dom_getAttributeNS(String namespaceUri, String localName) =>
-      host.$dom_getAttributeNS(namespaceUri, localName);
-
-  String $dom_setAttributeNS(
-      String namespaceUri, String localName, String value) {
-    host.$dom_setAttributeNS(namespaceUri, localName, value);
-  }
-
-  bool $dom_hasAttributeNS(String namespaceUri, String localName) =>
-      host.$dom_hasAttributeNS(namespaceUri, localName);
-
-  void $dom_removeAttributeNS(String namespaceUri, String localName) =>
-      host.$dom_removeAttributeNS(namespaceUri, localName);
-
-  Rect getBoundingClientRect() => host.getBoundingClientRect();
-
-  List<Rect> getClientRects() => host.getClientRects();
-
-  List<Node> getElementsByClassName(String name) =>
-      host.getElementsByClassName(name);
-
-  List<Node> $dom_getElementsByTagName(String name) =>
-      host.$dom_getElementsByTagName(name);
-
-  bool $dom_hasAttribute(String name) =>
-      host.$dom_hasAttribute(name);
-
-  List<Node> $dom_querySelectorAll(String selectors) =>
-      host.$dom_querySelectorAll(selectors);
-
-  void $dom_removeAttribute(String name) =>
-      host.$dom_removeAttribute(name);
-
-  void $dom_setAttribute(String name, String value) =>
-      host.$dom_setAttribute(name, value);
-
-  get $dom_attributes => host.$dom_attributes;
-
-  List<Node> get $dom_childNodes => host.$dom_childNodes;
-
-  Node get firstChild => host.firstChild;
-
-  Node get lastChild => host.lastChild;
-
-  String get localName => host.localName;
-  String get $dom_localName => host.$dom_localName;
-
-  String get namespaceUri => host.namespaceUri;
-  String get $dom_namespaceUri => host.$dom_namespaceUri;
-
-  int get nodeType => host.nodeType;
-
-  void $dom_addEventListener(String type, EventListener listener,
-                             [bool useCapture]) {
-    host.$dom_addEventListener(type, listener, useCapture);
-  }
-
-  bool dispatchEvent(Event event) => host.dispatchEvent(event);
-
-  Node $dom_removeChild(Node oldChild) => host.$dom_removeChild(oldChild);
-
-  void $dom_removeEventListener(String type, EventListener listener,
-                                [bool useCapture]) {
-    host.$dom_removeEventListener(type, listener, useCapture);
-  }
-
-  Node $dom_replaceChild(Node newChild, Node oldChild) =>
-      host.$dom_replaceChild(newChild, oldChild);
-
-  get xtag => host.xtag;
-
-  set xtag(value) { host.xtag = value; }
-
-  Node append(Node e) => host.append(e);
-
-  void appendText(String text) => host.appendText(text);
-
-  void appendHtml(String html) => host.appendHtml(html);
-
-  void $dom_scrollIntoView([bool alignWithTop]) {
-    if (alignWithTop == null) {
-      host.$dom_scrollIntoView();
-    } else {
-      host.$dom_scrollIntoView(alignWithTop);
-    }
-  }
-
-  void $dom_scrollIntoViewIfNeeded([bool centerIfNeeded]) {
-    if (centerIfNeeded == null) {
-      host.$dom_scrollIntoViewIfNeeded();
-    } else {
-      host.$dom_scrollIntoViewIfNeeded(centerIfNeeded);
-    }
-  }
-
-  String get regionOverset => host.regionOverset;
-
-  List<Range> getRegionFlowRanges() => host.getRegionFlowRanges();
-
   // TODO(jmesserly): rename "created" to "onCreated".
   void onCreated() => created();
 
-  Stream<Event> get onAbort => host.onAbort;
-  Stream<Event> get onBeforeCopy => host.onBeforeCopy;
-  Stream<Event> get onBeforeCut => host.onBeforeCut;
-  Stream<Event> get onBeforePaste => host.onBeforePaste;
-  Stream<Event> get onBlur => host.onBlur;
-  Stream<Event> get onChange => host.onChange;
-  Stream<MouseEvent> get onClick => host.onClick;
-  Stream<MouseEvent> get onContextMenu => host.onContextMenu;
-  Stream<Event> get onCopy => host.onCopy;
-  Stream<Event> get onCut => host.onCut;
-  Stream<Event> get onDoubleClick => host.onDoubleClick;
-  Stream<MouseEvent> get onDrag => host.onDrag;
-  Stream<MouseEvent> get onDragEnd => host.onDragEnd;
-  Stream<MouseEvent> get onDragEnter => host.onDragEnter;
-  Stream<MouseEvent> get onDragLeave => host.onDragLeave;
-  Stream<MouseEvent> get onDragOver => host.onDragOver;
-  Stream<MouseEvent> get onDragStart => host.onDragStart;
-  Stream<MouseEvent> get onDrop => host.onDrop;
-  Stream<Event> get onError => host.onError;
-  Stream<Event> get onFocus => host.onFocus;
-  Stream<Event> get onInput => host.onInput;
-  Stream<Event> get onInvalid => host.onInvalid;
-  Stream<KeyboardEvent> get onKeyDown => host.onKeyDown;
-  Stream<KeyboardEvent> get onKeyPress => host.onKeyPress;
-  Stream<KeyboardEvent> get onKeyUp => host.onKeyUp;
-  Stream<Event> get onLoad => host.onLoad;
-  Stream<MouseEvent> get onMouseDown => host.onMouseDown;
-  Stream<MouseEvent> get onMouseMove => host.onMouseMove;
-  Stream<Event> get onFullscreenChange => host.onFullscreenChange;
-  Stream<Event> get onFullscreenError => host.onFullscreenError;
-  Stream<Event> get onPaste => host.onPaste;
-  Stream<Event> get onReset => host.onReset;
-  Stream<Event> get onScroll => host.onScroll;
-  Stream<Event> get onSearch => host.onSearch;
-  Stream<Event> get onSelect => host.onSelect;
-  Stream<Event> get onSelectStart => host.onSelectStart;
-  Stream<Event> get onSubmit => host.onSubmit;
-  Stream<MouseEvent> get onMouseOut => host.onMouseOut;
-  Stream<MouseEvent> get onMouseOver => host.onMouseOver;
-  Stream<MouseEvent> get onMouseUp => host.onMouseUp;
-  Stream<TouchEvent> get onTouchCancel => host.onTouchCancel;
-  Stream<TouchEvent> get onTouchEnd => host.onTouchEnd;
-  Stream<TouchEvent> get onTouchEnter => host.onTouchEnter;
-  Stream<TouchEvent> get onTouchLeave => host.onTouchLeave;
-  Stream<TouchEvent> get onTouchMove => host.onTouchMove;
-  Stream<TouchEvent> get onTouchStart => host.onTouchStart;
-  Stream<TransitionEvent> get onTransitionEnd => host.onTransitionEnd;
-
-  // TODO(sigmund): do the normal forwarding when dartbug.com/7919 is fixed.
-  Stream<WheelEvent> get onMouseWheel {
-    throw new UnsupportedError('onMouseWheel is not supported');
-  }
+  /** The rest of the [Element] API is handled by [host]. */
+  dynamic noSuchMethod(Invocation m) => reflect(host).delegate(m);
 }
 
 /**