126 lines
4.5 KiB
C++
126 lines
4.5 KiB
C++
/*
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* Copyright (C) 2016 Apple Inc. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
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* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#pragma once
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#include "ActiveDOMObject.h"
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#include "CSSFontFaceSet.h"
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#include "EventTarget.h"
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#include "IDLTypes.h"
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#include <wtf/UniqueRef.h>
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namespace WebCore {
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template<typename IDLType> class DOMPromiseDeferred;
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template<typename IDLType> class DOMPromiseProxyWithResolveCallback;
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class DOMException;
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class FontFaceSet final : public RefCounted<FontFaceSet>, private CSSFontFaceSet::FontEventClient, public EventTargetWithInlineData, public ActiveDOMObject {
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WTF_MAKE_ISO_ALLOCATED(FontFaceSet);
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public:
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static Ref<FontFaceSet> create(ScriptExecutionContext&, const Vector<RefPtr<FontFace>>& initialFaces);
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static Ref<FontFaceSet> create(ScriptExecutionContext&, CSSFontFaceSet& backing);
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virtual ~FontFaceSet();
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bool has(FontFace&) const;
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size_t size() const;
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FontFaceSet& add(FontFace&);
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bool remove(FontFace&);
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void clear();
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using LoadPromise = DOMPromiseDeferred<IDLSequence<IDLInterface<FontFace>>>;
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void load(const String& font, const String& text, LoadPromise&&);
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ExceptionOr<bool> check(const String& font, const String& text);
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enum class LoadStatus { Loading, Loaded };
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LoadStatus status() const;
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using ReadyPromise = DOMPromiseProxyWithResolveCallback<IDLInterface<FontFaceSet>>;
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ReadyPromise& ready() { return m_readyPromise.get(); }
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void documentDidFinishLoading();
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CSSFontFaceSet& backing() { return m_backing; }
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class Iterator {
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public:
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explicit Iterator(FontFaceSet&);
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RefPtr<FontFace> next();
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private:
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Ref<FontFaceSet> m_target;
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size_t m_index { 0 }; // FIXME: There needs to be a mechanism to handle when fonts are added or removed from the middle of the FontFaceSet.
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};
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Iterator createIterator() { return Iterator(*this); }
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using RefCounted::ref;
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using RefCounted::deref;
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private:
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struct PendingPromise : RefCounted<PendingPromise> {
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static Ref<PendingPromise> create(LoadPromise&& promise)
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{
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return adoptRef(*new PendingPromise(WTFMove(promise)));
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}
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~PendingPromise();
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private:
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PendingPromise(LoadPromise&&);
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public:
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Vector<Ref<FontFace>> faces;
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UniqueRef<LoadPromise> promise;
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bool hasReachedTerminalState { false };
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};
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FontFaceSet(ScriptExecutionContext&, const Vector<RefPtr<FontFace>>&);
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FontFaceSet(ScriptExecutionContext&, CSSFontFaceSet&);
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// CSSFontFaceSet::FontEventClient
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void faceFinished(CSSFontFace&, CSSFontFace::Status) final;
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void startedLoading() final;
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void completedLoading() final;
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// ActiveDOMObject
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const char* activeDOMObjectName() const final { return "FontFaceSet"; }
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// EventTarget
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EventTargetInterface eventTargetInterface() const final { return FontFaceSetEventTargetInterfaceType; }
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ScriptExecutionContext* scriptExecutionContext() const final { return ActiveDOMObject::scriptExecutionContext(); }
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void refEventTarget() final { ref(); }
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void derefEventTarget() final { deref(); }
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// Callback for ReadyPromise.
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FontFaceSet& readyPromiseResolve();
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Ref<CSSFontFaceSet> m_backing;
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HashMap<RefPtr<FontFace>, Vector<Ref<PendingPromise>>> m_pendingPromises;
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UniqueRef<ReadyPromise> m_readyPromise;
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bool m_isDocumentLoaded { true };
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};
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}
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