#pragma once
#include "ActiveDOMObject.h"
#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 CanMakeWeakPtr<CSSFontSelector>, public ActiveDOMObject {
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 AtomString&) final;
size_t fallbackFontCount() final;
RefPtr<Font> fallbackFontAt(const FontDescription&, size_t) final;
void clearDocument();
void emptyCaches();
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.get(); }
void beginLoadingFontSoon(CachedFont&);
void suspendFontLoadingTimer();
FontFaceSet* fontFaceSetIfExists();
FontFaceSet& fontFaceSet();
void incrementIsComputingRootStyleFont() { ++m_computingRootStyleFontCount; }
void decrementIsComputingRootStyleFont() { --m_computingRootStyleFontCount; }
void loadPendingFonts();
private:
explicit CSSFontSelector(Document&);
void dispatchInvalidationCallbacks();
void opportunisticallyStartFontDataURLLoading(const FontCascadeDescription&, const AtomString& family) final;
void fontModified() final;
void fontLoadingTimerFired();
void stop() final;
void suspend(ReasonForSuspension) final;
void resume() final;
const char* activeDOMObjectName() const final { return "CSSFontSelector"_s; }
struct PendingFontFaceRule {
StyleRuleFontFace& styleRuleFontFace;
bool isInitiatingElementInUserAgentShadowTree;
};
Vector<PendingFontFaceRule> m_stagingArea;
WeakPtr<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_fontLoadingTimer;
bool m_isFontLoadingSuspended { false };
unsigned m_uniqueId;
unsigned m_version;
unsigned m_computingRootStyleFontCount { 0 };
bool m_creatingFont { false };
bool m_buildIsUnderway { false };
};
}