109 lines
4.4 KiB
C++
109 lines
4.4 KiB
C++
/*
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* Copyright (C) 2017 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. AND ITS CONTRIBUTORS ``AS IS''
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
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* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
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* THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "config.h"
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#include "FileSystemDirectoryReader.h"
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#include "DOMException.h"
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#include "DOMFileSystem.h"
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#include "Document.h"
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#include "ErrorCallback.h"
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#include "FileSystemDirectoryEntry.h"
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#include "FileSystemEntriesCallback.h"
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#include "ScriptExecutionContext.h"
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#include "WindowEventLoop.h"
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#include <wtf/IsoMallocInlines.h>
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#include <wtf/MainThread.h>
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namespace WebCore {
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WTF_MAKE_ISO_ALLOCATED_IMPL(FileSystemDirectoryReader);
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FileSystemDirectoryReader::FileSystemDirectoryReader(ScriptExecutionContext& context, FileSystemDirectoryEntry& directory)
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: ActiveDOMObject(&context)
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, m_directory(directory)
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{
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suspendIfNeeded();
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}
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FileSystemDirectoryReader::~FileSystemDirectoryReader() = default;
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const char* FileSystemDirectoryReader::activeDOMObjectName() const
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{
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return "FileSystemDirectoryReader";
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}
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Document* FileSystemDirectoryReader::document() const
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{
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return downcast<Document>(scriptExecutionContext());
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}
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// https://wicg.github.io/entries-api/#dom-filesystemdirectoryentry-readentries
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void FileSystemDirectoryReader::readEntries(ScriptExecutionContext& context, Ref<FileSystemEntriesCallback>&& successCallback, RefPtr<ErrorCallback>&& errorCallback)
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{
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if (m_isReading) {
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if (errorCallback)
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errorCallback->scheduleCallback(context, DOMException::create(Exception { InvalidStateError, "Directory reader is already reading"_s }));
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return;
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}
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if (m_error) {
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if (errorCallback)
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errorCallback->scheduleCallback(context, DOMException::create(*m_error));
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return;
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}
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if (m_isDone) {
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successCallback->scheduleCallback(context, { });
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return;
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}
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m_isReading = true;
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auto pendingActivity = makePendingActivity(*this);
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callOnMainThread([this, context = makeRef(context), successCallback = WTFMove(successCallback), errorCallback = WTFMove(errorCallback), pendingActivity = WTFMove(pendingActivity)]() mutable {
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m_isReading = false;
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m_directory->filesystem().listDirectory(context, m_directory, [this, successCallback = WTFMove(successCallback), errorCallback = WTFMove(errorCallback), pendingActivity = WTFMove(pendingActivity)](ExceptionOr<Vector<Ref<FileSystemEntry>>>&& result) mutable {
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auto* document = this->document();
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if (result.hasException()) {
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m_error = result.releaseException();
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if (errorCallback && document) {
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document->eventLoop().queueTask(TaskSource::Networking, [this, errorCallback = WTFMove(errorCallback), pendingActivity = WTFMove(pendingActivity)]() mutable {
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errorCallback->handleEvent(DOMException::create(*m_error));
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});
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}
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return;
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}
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m_isDone = true;
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if (document) {
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document->eventLoop().queueTask(TaskSource::Networking, [successCallback = WTFMove(successCallback), pendingActivity = WTFMove(pendingActivity), result = result.releaseReturnValue()]() mutable {
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successCallback->handleEvent(WTFMove(result));
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});
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}
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});
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});
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}
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} // namespace WebCore
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