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/*
* Copyright (C) 2013 Google 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:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * 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.
* * Neither the name of Google Inc. nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "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 THE COPYRIGHT
* OWNER 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.
*/
#ifndef HTMLImportLoader_h
#define HTMLImportLoader_h
#include "core/fetch/RawResource.h"
#include "core/fetch/ResourceOwner.h"
#include "platform/heap/Handle.h"
#include "wtf/OwnPtr.h"
#include "wtf/PassOwnPtr.h"
#include "wtf/Vector.h"
namespace WebCore {
class CustomElementSyncMicrotaskQueue;
class Document;
class DocumentWriter;
class HTMLImportChild;
class HTMLImportsController;
//
// Owning imported Document lifetime. It also implements ResourceClient through ResourceOwner
// to feed fetched bytes to the DocumentWriter of the imported document.
// HTMLImportLoader is owned by HTMLImportsController.
//
//
class HTMLImportLoader FINAL : public NoBaseWillBeGarbageCollectedFinalized<HTMLImportLoader>, public ResourceOwner<RawResource> {
public:
enum State {
StateLoading,
StateWritten,
StateParsed,
StateLoaded,
StateError
};
static PassOwnPtrWillBeRawPtr<HTMLImportLoader> create(HTMLImportsController* controller)
{
return adoptPtrWillBeNoop(new HTMLImportLoader(controller));
}
virtual ~HTMLImportLoader();
Document* document() const { return m_document.get(); }
void addImport(HTMLImportChild*);
#if !ENABLE(OILPAN)
void removeImport(HTMLImportChild*);
#endif
void moveToFirst(HTMLImportChild*);
HTMLImportChild* firstImport() const { return m_imports[0]; }
bool isFirstImport(const HTMLImportChild* child) const { return m_imports.size() ? firstImport() == child : false; }
bool isDone() const { return m_state == StateLoaded || m_state == StateError; }
bool hasError() const { return m_state == StateError; }
bool shouldBlockScriptExecution() const;
#if !ENABLE(OILPAN)
void importDestroyed();
#endif
void startLoading(const ResourcePtr<RawResource>&);
// Tells the loader that the parser is done with this import.
// Called by Document::finishedParsing, after DOMContentLoaded was dispatched.
void didFinishParsing();
// Tells the loader that all of the import's stylesheets finished
// loading.
// Called by Document::didRemoveAllPendingStylesheet.
void didRemoveAllPendingStylesheet();
PassRefPtrWillBeRawPtr<CustomElementSyncMicrotaskQueue> microtaskQueue() const;
virtual void trace(Visitor*);
private:
HTMLImportLoader(HTMLImportsController*);
// RawResourceClient
virtual void responseReceived(Resource*, const ResourceResponse&) OVERRIDE;
virtual void dataReceived(Resource*, const char* data, int length) OVERRIDE;
virtual void notifyFinished(Resource*) OVERRIDE;
State startWritingAndParsing(const ResourceResponse&);
State finishWriting();
State finishParsing();
State finishLoading();
void setState(State);
void didFinishLoading();
bool hasPendingResources() const;
#if !ENABLE(OILPAN)
void clear();
#endif
RawPtrWillBeMember<HTMLImportsController> m_controller;
WillBeHeapVector<RawPtrWillBeMember<HTMLImportChild> > m_imports;
State m_state;
RefPtrWillBeMember<Document> m_document;
RefPtrWillBeMember<DocumentWriter> m_writer;
RefPtrWillBeMember<CustomElementSyncMicrotaskQueue> m_microtaskQueue;
};
} // namespace WebCore
#endif // HTMLImportLoader_h
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