91 lines
3.1 KiB
C++
91 lines
3.1 KiB
C++
/*
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* Copyright (C) 2016 Canon Inc.
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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 required to be met:
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*
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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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* 3. Neither the name of Canon Inc. nor the names of
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* its contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY CANON INC. AND ITS CONTRIBUTORS "AS IS" AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL CANON INC. AND ITS CONTRIBUTORS BE LIABLE FOR
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* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (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 "JSDOMPromiseDeferred.h"
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#include "ReadableStreamDefaultController.h"
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#include <wtf/WeakPtr.h>
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namespace WebCore {
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class ReadableStreamSource : public RefCounted<ReadableStreamSource> {
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public:
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virtual ~ReadableStreamSource();
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void start(ReadableStreamDefaultController&&, DOMPromiseDeferred<void>&&);
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void pull(DOMPromiseDeferred<void>&&);
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void cancel(JSC::JSValue);
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bool isPulling() const { return !!m_promise; }
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protected:
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ReadableStreamDefaultController& controller() { return m_controller.value(); }
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const ReadableStreamDefaultController& controller() const { return m_controller.value(); }
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void startFinished();
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void pullFinished();
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void cancelFinished();
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void clean();
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virtual void setActive() = 0;
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virtual void setInactive() = 0;
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virtual void doStart() = 0;
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virtual void doPull() = 0;
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virtual void doCancel() = 0;
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private:
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std::unique_ptr<DOMPromiseDeferred<void>> m_promise;
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std::optional<ReadableStreamDefaultController> m_controller;
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};
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class SimpleReadableStreamSource
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: public ReadableStreamSource
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, public CanMakeWeakPtr<SimpleReadableStreamSource> {
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public:
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static Ref<SimpleReadableStreamSource> create() { return adoptRef(*new SimpleReadableStreamSource); }
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void close();
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void enqueue(JSC::JSValue);
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private:
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SimpleReadableStreamSource() = default;
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// ReadableStreamSource
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void setActive() final { }
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void setInactive() final { }
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void doStart() final { }
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void doPull() final { }
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void doCancel() final;
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bool m_isCancelled { false };
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};
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} // namespace WebCore
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