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/*
* Copyright (C) 2007, 2008, 2011 Apple 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:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. 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.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``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 APPLE INC. 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.
*/
#pragma once
#include "CSSFontFace.h"
#include "CSSFontFaceSet.h"
#include "CachedResourceHandle.h"
#include "Font.h"
#include "FontSelector.h"
#include "Timer.h"
#include <memory>
#include <wtf/Forward.h>
#include <wtf/HashSet.h>
#include <wtf/RefPtr.h>
#include <wtf/text/StringHash.h>
namespace WebCore {
class CSSFontFaceRule;
class CSSPrimitiveValue;
class CSSSegmentedFontFace;
class CSSValueList;
class CachedFont;
class Document;
class StyleRuleFontFace;
class CSSFontSelector final : public FontSelector, public CSSFontFaceSetClient {
public:
static Ref<CSSFontSelector> create(Document& document)
{
return adoptRef(*new CSSFontSelector(document));
}
virtual ~CSSFontSelector();
unsigned version() const final { return m_version; }
unsigned uniqueId() const final { return m_uniqueId; }
FontRanges fontRangesForFamily(const FontDescription&, const AtomicString&) final;
size_t fallbackFontCount() final;
RefPtr<Font> fallbackFontAt(const FontDescription&, size_t) final;
void clearDocument();
void buildStarted();
void buildCompleted();
void addFontFaceRule(StyleRuleFontFace&, bool isInitiatingElementInUserAgentShadowTree);
void fontLoaded();
void fontCacheInvalidated() final;
bool isEmpty() const;
void registerForInvalidationCallbacks(FontSelectorClient&) final;
void unregisterForInvalidationCallbacks(FontSelectorClient&) final;
Document* document() const { return m_document; }
void beginLoadingFontSoon(CachedFont&);
FontFaceSet& fontFaceSet();
void setIsComputingRootStyleFont(bool value) { m_isComputingRootStyleFont = value; }
private:
explicit CSSFontSelector(Document&);
void dispatchInvalidationCallbacks();
void fontModified() final;
void beginLoadTimerFired();
struct PendingFontFaceRule {
StyleRuleFontFace& styleRuleFontFace;
bool isInitiatingElementInUserAgentShadowTree;
};
Vector<PendingFontFaceRule> m_stagingArea;
Document* m_document;
RefPtr<FontFaceSet> m_fontFaceSet;
Ref<CSSFontFaceSet> m_cssFontFaceSet;
HashSet<FontSelectorClient*> m_clients;
Vector<CachedResourceHandle<CachedFont>> m_fontsToBeginLoading;
HashSet<RefPtr<CSSFontFace>> m_cssConnectionsPossiblyToRemove;
HashSet<RefPtr<StyleRuleFontFace>> m_cssConnectionsEncounteredDuringBuild;
Timer m_beginLoadingTimer;
unsigned m_uniqueId;
unsigned m_version;
bool m_creatingFont { false };
bool m_buildIsUnderway { false };
bool m_isComputingRootStyleFont { false };
};
} // namespace WebCore
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