/*
 * Copyright (C) 2013 Google Inc. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met:
 *
 *     * Redistributions of source code must retain the above copyright
 * notice, this list of conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above
 * copyright notice, this list of conditions and the following disclaimer
 * in the documentation and/or other materials provided with the
 * distribution.
 *     * Neither the name of Google Inc. nor the names of its
 * contributors may be used to endorse or promote products derived from
 * this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

enum FontFaceSetLoadStatus { "loading", "loaded" };

[
    ActiveDOMObject,
    SetWrapperReferenceFrom=document,
    NoInterfaceObject,
] interface FontFaceSet : EventTarget {

    attribute EventHandler onloading;
    attribute EventHandler onloadingdone;
    attribute EventHandler onloadingerror;

    [RaisesException] boolean check(DOMString font, optional DOMString text = " ");
    [CallWith=ScriptState] Promise load(DOMString font, optional DOMString text = " ");
    [MeasureAs=FontFaceSetReady, CallWith=ScriptState] Promise ready();

    [RaisesException] void add(FontFace fontFace);
    void clear();
    [RaisesException, ImplementedAs=remove] boolean delete(FontFace fontFace);
    void forEach(FontFaceSetForEachCallback callback, optional any thisArg);
    [RaisesException] boolean has(FontFace fontFace);

    readonly attribute unsigned long size;
    readonly attribute FontFaceSetLoadStatus status;
};