Moved most of html lib generating scripts into tools.

sdk/lib/html/src/CssClassSet.dart

-// 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.
-
-part of html;
-
-abstract class CssClassSet implements Set<String> {
-
-  String toString() {
-    return Strings.join(new List.from(readClasses()), ' ');
-  }
-
-  /**
-   * Adds the class [token] to the element if it is not on it, removes it if it
-   * is.
-   */
-  bool toggle(String value) {
-    Set<String> s = readClasses();
-    bool result = false;
-    if (s.contains(value)) {
-      s.remove(value);
-    } else {
-      s.add(value);
-      result = true;
-    }
-    writeClasses(s);
-    return result;
-  }
-
-  /**
-   * Returns [:true:] if classes cannot be added or removed from this
-   * [:CssClassSet:].
-   */
-  bool get frozen => false;
-
-  // interface Iterable - BEGIN
-  Iterator<String> iterator() => readClasses().iterator();
-  // interface Iterable - END
-
-  // interface Collection - BEGIN
-  void forEach(void f(String element)) {
-    readClasses().forEach(f);
-  }
-
-  Collection map(f(String element)) => readClasses().map(f);
-
-  Collection<String> filter(bool f(String element)) => readClasses().filter(f);
-
-  bool every(bool f(String element)) => readClasses().every(f);
-
-  bool some(bool f(String element)) => readClasses().some(f);
-
-  bool get isEmpty => readClasses().isEmpty;
-
-  int get length =>readClasses().length;
-
-  dynamic reduce(dynamic initialValue,
-      dynamic combine(dynamic previousValue, String element)) {
-    return readClasses().reduce(initialValue, combine);
-  }
-  // interface Collection - END
-
-  // interface Set - BEGIN
-  bool contains(String value) => readClasses().contains(value);
-
-  void add(String value) {
-    // TODO - figure out if we need to do any validation here
-    // or if the browser natively does enough
-    _modify((s) => s.add(value));
-  }
-
-  bool remove(String value) {
-    Set<String> s = readClasses();
-    bool result = s.remove(value);
-    writeClasses(s);
-    return result;
-  }
-
-  void addAll(Collection<String> collection) {
-    // TODO - see comment above about validation
-    _modify((s) => s.addAll(collection));
-  }
-
-  void removeAll(Collection<String> collection) {
-    _modify((s) => s.removeAll(collection));
-  }
-
-  bool isSubsetOf(Collection<String> collection) =>
-    readClasses().isSubsetOf(collection);
-
-  bool containsAll(Collection<String> collection) =>
-    readClasses().containsAll(collection);
-
-  Set<String> intersection(Collection<String> other) =>
-    readClasses().intersection(other);
-
-  void clear() {
-    _modify((s) => s.clear());
-  }
-  // interface Set - END
-
-  /**
-   * Helper method used to modify the set of css classes on this element.
-   *
-   *   f - callback with:
-   *      s - a Set of all the css class name currently on this element.
-   *
-   *   After f returns, the modified set is written to the
-   *       className property of this element.
-   */
-  void _modify( f(Set<String> s)) {
-    Set<String> s = readClasses();
-    f(s);
-    writeClasses(s);
-  }
-
-  /**
-   * Read the class names from the Element class property,
-   * and put them into a set (duplicates are discarded).
-   * This is intended to be overridden by specific implementations.
-   */
-  Set<String> readClasses();
-
-  /**
-   * Join all the elements of a set into one string and write
-   * back to the element.
-   * This is intended to be overridden by specific implementations.
-   */
-  void writeClasses(Set<String> s);
-}