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/*
* Copyright (C) 2017 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. AND ITS 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 APPLE INC. OR ITS 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.
*/
#include "config.h"
#include "FileSystemDirectoryReader.h"
#include "DOMException.h"
#include "DOMFileSystem.h"
#include "Document.h"
#include "ErrorCallback.h"
#include "FileSystemDirectoryEntry.h"
#include "FileSystemEntriesCallback.h"
#include "ScriptExecutionContext.h"
#include "WindowEventLoop.h"
#include <wtf/MainThread.h>
#include <wtf/TZoneMallocInlines.h>
namespace WebCore {
WTF_MAKE_TZONE_OR_ISO_ALLOCATED_IMPL(FileSystemDirectoryReader);
Ref<FileSystemDirectoryReader> FileSystemDirectoryReader::create(ScriptExecutionContext& context, FileSystemDirectoryEntry& directory)
{
auto reader = adoptRef(*new FileSystemDirectoryReader(context, directory));
reader->suspendIfNeeded();
return reader;
}
FileSystemDirectoryReader::FileSystemDirectoryReader(ScriptExecutionContext& context, FileSystemDirectoryEntry& directory)
: ActiveDOMObject(&context)
, m_directory(directory)
{
}
FileSystemDirectoryReader::~FileSystemDirectoryReader() = default;
Document* FileSystemDirectoryReader::document() const
{
return downcast<Document>(scriptExecutionContext());
}
// https://wicg.github.io/entries-api/#dom-filesystemdirectoryentry-readentries
void FileSystemDirectoryReader::readEntries(ScriptExecutionContext& context, Ref<FileSystemEntriesCallback>&& successCallback, RefPtr<ErrorCallback>&& errorCallback)
{
if (m_isReading) {
if (errorCallback)
errorCallback->scheduleCallback(context, DOMException::create(Exception { ExceptionCode::InvalidStateError, "Directory reader is already reading"_s }));
return;
}
if (m_error) {
if (errorCallback)
errorCallback->scheduleCallback(context, DOMException::create(*m_error));
return;
}
if (m_isDone) {
successCallback->scheduleCallback(context, { });
return;
}
m_isReading = true;
auto pendingActivity = makePendingActivity(*this);
callOnMainThread([this, context = Ref { context }, successCallback = WTFMove(successCallback), errorCallback = WTFMove(errorCallback), pendingActivity = WTFMove(pendingActivity)]() mutable {
m_isReading = false;
m_directory->filesystem().listDirectory(context, m_directory, [this, successCallback = WTFMove(successCallback), errorCallback = WTFMove(errorCallback), pendingActivity = WTFMove(pendingActivity)](ExceptionOr<Vector<Ref<FileSystemEntry>>>&& result) mutable {
RefPtr document = this->document();
if (result.hasException()) {
m_error = result.releaseException();
if (errorCallback && document) {
document->eventLoop().queueTask(TaskSource::Networking, [this, errorCallback = WTFMove(errorCallback), pendingActivity = WTFMove(pendingActivity)]() mutable {
errorCallback->handleEvent(DOMException::create(*m_error));
});
}
return;
}
m_isDone = true;
if (document) {
document->eventLoop().queueTask(TaskSource::Networking, [successCallback = WTFMove(successCallback), pendingActivity = WTFMove(pendingActivity), result = result.releaseReturnValue()]() mutable {
successCallback->handleEvent(WTFMove(result));
});
}
});
});
}
} // namespace WebCore
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