introduce web_components pkg for consolidated polyfills

pkg/custom_element/lib/custom_element.dart

Index: pkg/custom_element/lib/custom_element.dart
diff --git a/pkg/custom_element/lib/custom_element.dart b/pkg/custom_element/lib/custom_element.dart
deleted file mode 100644
index ab285ae47078f6892e1c0e26bc48b7d5089adb88..0000000000000000000000000000000000000000
--- a/pkg/custom_element/lib/custom_element.dart
+++ /dev/null
@@ -1,503 +0,0 @@
-// 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.
-
-/**
- * Custom DOM elements.
- *
- * This library provides access to the Polymer project's
- * [Custom Elements]
- * (http://www.polymer-project.org/platform/custom-elements.html)
- * API, which lets you define your own elements. With custom elements, you
- * associate code with custom tag names, and then use those custom tag names
- * as you would any standard tag. For more information, see the
- * [Polymer.dart homepage](https://www.dartlang.org/polymer-dart/) and its
- * [custom element example]
- * (https://www.dartlang.org/polymer-dart/#custom-elements).
- */
-library custom_element;
-
-import 'dart:async';
-import 'dart:html';
-import 'src/custom_tag_name.dart';
-
-/**
- * *Deprecated* -- do not use. Extend [HtmlElement] and use
- * [document.register] instead. If running on a browser without native
- * document.register, you can add the polyfill script to your page:
- *
- *     <script src="packages/custom_element/custom-elements.debug.js"></script>
- *
- * You can also use "custom-elements.min.js" for the minified version.
- */
-// This is only used by Dart Web UI.
-class CustomElement implements Element {
-  /** The web component element wrapped by this class. */
-  Element _host;
-  List _shadowRoots;
-
-  /**
-   * Shadow roots generated by dwc for each custom element, indexed by the
-   * custom element tag name.
-   */
-  Map<String, dynamic> _generatedRoots = {};
-
-  /**
-   * Temporary property until components extend [Element]. An element can
-   * only be associated with one host, and it is an error to use a web component
-   * without an associated host element.
-   */
-  Element get host {
-    if (_host == null) throw new StateError('host element has not been set.');
-    return _host;
-  }
-
-  set host(Element value) {
-    if (value == null) {
-      throw new ArgumentError('host must not be null.');
-    }
-    // TODO(jmesserly): xtag used to return "null" if unset, now it checks for
-    // "this". Temporarily allow both.
-    var xtag = value.xtag;
-    if (xtag != null && xtag != value) {
-      throw new ArgumentError('host must not have its xtag property set.');
-    }
-    if (_host != null) {
-      throw new StateError('host can only be set once.');
-    }
-
-    value.xtag = this;
-    _host = value;
-  }
-
-  /**
-   * **Note**: This is an implementation helper and should not need to be called
-   * from your code.
-   *
-   * Creates the [ShadowRoot] backing this component.
-   */
-  createShadowRoot([String componentName]) {
-    var root = host.createShadowRoot();
-    if (componentName != null) {
-      _generatedRoots[componentName] = root;
-    }
-    return root;
-  }
-
-  getShadowRoot(String componentName) => _generatedRoots[componentName];
-
-  /**
-   * Invoked when this component gets created.
-   * Note that [root] will be a [ShadowRoot] if the browser supports Shadow DOM.
-   */
-  void created() {}
-  // Added for analyzer warnings
-  @deprecated
-  void createdCallback() {}
-
-  /** Invoked when this component gets inserted in the DOM tree. */
-  void inserted() {}
-  @deprecated
-  void enteredView() {}
-
-  /** Invoked when this component is removed from the DOM tree. */
-  void removed() {}
-  @deprecated
-  void leftView() {}
-
-  /** Invoked when any attribute of the component is modified. */
-  void attributeChanged(String name, String oldValue, String newValue) =>
-      host.attributeChanged(name, oldValue, newValue);
-
-  // TODO(efortuna): Update these when we decide what to do with these
-  // properties.
-  @deprecated
-  String getAttribute(String name) =>
-      host.getAttribute(name);
-
-  @deprecated
-  String getAttributeNS(String namespaceUri, String localName) =>
-      host.getAttributeNS(namespaceUri, localName);
-
-  @deprecated
-  String setAttributeNS(
-      String namespaceUri, String localName, String value) {
-    host.setAttributeNS(namespaceUri, localName, value);
-  }
-
-  @deprecated
-  void setAttribute(String name, String value) =>
-      host.setAttribute(name, value);
-
-  @deprecated
-  List<Node> get childNodes => host.childNodes;
-
-  // 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 ownerDocument => host.ownerDocument;
-
-  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;
-
-  Events get on => host.on;
-
-  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;
-  }
-
-  void setInnerHtml(String html,
-    {NodeValidator validator, NodeTreeSanitizer treeSanitizer}) {
-    host.setInnerHtml(html, validator: validator, treeSanitizer: treeSanitizer);
-  }
-
-  DocumentFragment createFragment(String html,
-      {NodeValidator validator, NodeTreeSanitizer treeSanitizer}) =>
-    host.createFragment(html,
-        validator: validator, treeSanitizer: treeSanitizer);
-
-  InputMethodContext get inputMethodContext => host.inputMethodContext;
-
-  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(); }
-
-  List<Node> getDestinationInsertionPoints() =>
-    host.getDestinationInsertionPoints();
-
-  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);
-
-  bool matchesWithAncestors(String selectors) =>
-      host.matchesWithAncestors(selectors);
-
-  @deprecated
-  void requestFullScreen(int flags) { requestFullscreen(); }
-
-  void requestFullscreen() { host.requestFullscreen(); }
-
-  void requestPointerLock() { host.requestPointerLock(); }
-
-  Element querySelector(String selectors) => host.querySelector(selectors);
-
-  ElementList querySelectorAll(String selectors) =>
-      host.querySelectorAll(selectors);
-
-  @deprecated
-  Element query(String selectors) => host.querySelector(selectors);
-
-  @deprecated
-  ElementList queryAll(String selectors) => host.querySelectorAll(selectors);
-
-  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;
-
-  Rectangle get client => host.client;
-
-  @deprecated
-  int get offsetHeight => offset.height;
-
-  @deprecated
-  int get offsetLeft => offset.left;
-
-  @deprecated
-  int get offsetTop => offset.top;
-
-  @deprecated
-  int get offsetWidth => offset.width;
-
-  Rectangle 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;
-
-  Rectangle getBoundingClientRect() => host.getBoundingClientRect();
-
-  List<Rectangle> getClientRects() => host.getClientRects();
-
-  List<Node> getElementsByClassName(String name) =>
-      host.getElementsByClassName(name);
-
-  Node get firstChild => host.firstChild;
-
-  Node get lastChild => host.lastChild;
-
-  String get localName => host.localName;
-
-  String get namespaceUri => host.namespaceUri;
-
-  int get nodeType => host.nodeType;
-
-  void addEventListener(String type, EventListener listener,
-      [bool useCapture]) {
-    host.addEventListener(type, listener, useCapture);
-  }
-
-  bool dispatchEvent(Event event) => host.dispatchEvent(event);
-
-  void removeEventListener(String type, EventListener listener,
-      [bool useCapture]) {
-    host.removeEventListener(type, listener, useCapture);
-  }
-
-  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);
-
-  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 onMouseEnter => host.onMouseEnter;
-  Stream<MouseEvent> get onMouseLeave => host.onMouseLeave;
-  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');
-  }
-}