1/* 2 * Copyright (C) 2011 Apple Inc. All rights reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 1. Redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer. 9 * 2. Redistributions in binary form must reproduce the above copyright 10 * notice, this list of conditions and the following disclaimer in the 11 * documentation and/or other materials provided with the distribution. 12 * 13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' 14 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, 15 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS 17 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 18 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 19 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 20 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 21 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 22 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF 23 * THE POSSIBILITY OF SUCH DAMAGE. 24 */ 25 26#ifndef EmojiFallbackFontSelector_h 27#define EmojiFallbackFontSelector_h 28 29#include <WebCore/FontSelector.h> 30#include <wtf/PassRefPtr.h> 31 32class EmojiFallbackFontSelector : public WebCore::FontSelector { 33public: 34 static PassRefPtr<EmojiFallbackFontSelector> create() { return adoptRef(new EmojiFallbackFontSelector()); } 35 virtual ~EmojiFallbackFontSelector() override { } 36 virtual PassRefPtr<WebCore::FontData> getFontData(const WebCore::FontDescription&, const AtomicString& familyName) override { ASSERT_NOT_REACHED(); return 0; } 37 virtual bool resolvesFamilyFor(const WebCore::FontDescription&) const override { ASSERT_NOT_REACHED(); return false; } 38 virtual size_t fallbackFontDataCount() override { return 1; }; 39 virtual PassRefPtr<WebCore::FontData> getFallbackFontData(const WebCore::FontDescription&, size_t) override; 40 41 virtual void registerForInvalidationCallbacks(WebCore::FontSelectorClient*) override { } 42 virtual void unregisterForInvalidationCallbacks(WebCore::FontSelectorClient*) override { } 43 44 virtual unsigned version() const override { return 0; } 45 virtual unsigned uniqueId() const override { return 0; } 46 47private: 48 EmojiFallbackFontSelector() { } 49}; 50 51#endif // EmojiFallbackFontSelector_h 52