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