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679b5e2db1
Backed out changeset b417c2d937e8 (bug 1485040) Backed out changeset c567c4c7438f (bug 1485040) Backed out changeset 806c36cb2c4c (bug 1485040) Backed out changeset 0fbb490ffc7f (bug 1485040) Backed out changeset a9622e7761eb (bug 1485040)
65 lines
2.4 KiB
Plaintext
65 lines
2.4 KiB
Plaintext
/* -*- Mode: IDL; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this file,
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* You can obtain one at http://mozilla.org/MPL/2.0/.
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*
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* The origin of this IDL file is
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* http://dev.w3.org/csswg/css-font-loading/#FontFaceSet-interface
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*
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* Copyright © 2014 W3C® (MIT, ERCIM, Keio, Beihang), All Rights Reserved. W3C
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* liability, trademark and document use rules apply.
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*/
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// To implement FontFaceSet's iterator until we can use setlike.
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dictionary FontFaceSetIteratorResult
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{
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required any value;
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required boolean done;
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};
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// To implement FontFaceSet's iterator until we can use setlike.
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[NoInterfaceObject]
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interface FontFaceSetIterator {
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[Throws] FontFaceSetIteratorResult next();
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};
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callback FontFaceSetForEachCallback = void (FontFace value, FontFace key, FontFaceSet set);
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enum FontFaceSetLoadStatus { "loading", "loaded" };
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// Bug 1072762 is for the FontFaceSet constructor.
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// [Constructor(sequence<FontFace> initialFaces)]
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[Pref="layout.css.font-loading-api.enabled"]
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interface FontFaceSet : EventTarget {
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// Emulate setlike behavior until we can use that directly.
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readonly attribute unsigned long size;
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[Throws] void add(FontFace font);
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boolean has(FontFace font);
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boolean delete(FontFace font);
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void clear();
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[NewObject] FontFaceSetIterator entries();
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// Iterator keys();
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[NewObject, Alias=keys, Alias="@@iterator"] FontFaceSetIterator values();
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[Throws] void forEach(FontFaceSetForEachCallback cb, optional any thisArg);
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// -- events for when loading state changes
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attribute EventHandler onloading;
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attribute EventHandler onloadingdone;
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attribute EventHandler onloadingerror;
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// check and start loads if appropriate
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// and fulfill promise when all loads complete
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[NewObject] Promise<sequence<FontFace>> load(DOMString font, optional DOMString text = " ");
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// return whether all fonts in the fontlist are loaded
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// (does not initiate load if not available)
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[Throws] boolean check(DOMString font, optional DOMString text = " ");
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// async notification that font loading and layout operations are done
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[Throws] readonly attribute Promise<void> ready;
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// loading state, "loading" while one or more fonts loading, "loaded" otherwise
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readonly attribute FontFaceSetLoadStatus status;
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};
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