// http://w3c.github.io/selection-api/#selection-interface
interface Selection {
  readonly attribute Node?         anchorNode;
  readonly attribute unsigned long anchorOffset;
  readonly attribute Node?         focusNode;
  readonly attribute unsigned long focusOffset;
  readonly attribute boolean       isCollapsed;
  readonly attribute unsigned long rangeCount;
  readonly attribute DOMString     type;
  Range     getRangeAt(unsigned long index);
  void      addRange(Range range);
  void      removeRange(Range range);
  void      removeAllRanges();
  void      empty();
  void      collapse(Node? node, optional unsigned long offset = 0);
  void      setPosition(Node? node, optional unsigned long offset = 0);
  void      collapseToStart();
  void      collapseToEnd();
  void      extend(Node node, optional unsigned long offset = 0);
  void      setBaseAndExtent(Node anchorNode,
                             unsigned long anchorOffset,
                             Node focusNode,
                             unsigned long focusOffset);
  void      selectAllChildren(Node node);
  [CEReactions]
  void      deleteFromDocument();
  boolean   containsNode(Node node,
                         optional boolean allowPartialContainment = false);
  stringifier DOMString ();
};

partial interface Document {
  Selection? getSelection();
};

partial interface Window {
  Selection? getSelection();
};

partial interface GlobalEventHandlers {
  attribute EventHandler onselectstart;
  attribute EventHandler onselectionchange;
};