forked from mirrors/gecko-dev
78 lines
2.5 KiB
C++
78 lines
2.5 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "WebBrowserPersistSerializeParent.h"
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#include "nsReadableUtils.h"
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#include "nsThreadUtils.h"
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namespace mozilla {
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WebBrowserPersistSerializeParent::WebBrowserPersistSerializeParent(
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nsIWebBrowserPersistDocument* aDocument, nsIOutputStream* aStream,
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nsIWebBrowserPersistWriteCompletion* aFinish)
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: mDocument(aDocument),
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mStream(aStream),
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mFinish(aFinish),
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mOutputError(NS_OK) {
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MOZ_ASSERT(aDocument);
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MOZ_ASSERT(aStream);
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MOZ_ASSERT(aFinish);
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}
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WebBrowserPersistSerializeParent::~WebBrowserPersistSerializeParent() = default;
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mozilla::ipc::IPCResult WebBrowserPersistSerializeParent::RecvWriteData(
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nsTArray<uint8_t>&& aData) {
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if (NS_FAILED(mOutputError)) {
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return IPC_OK();
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}
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uint32_t written = 0;
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static_assert(sizeof(char) == sizeof(uint8_t),
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"char must be (at least?) 8 bits");
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const char* data = reinterpret_cast<const char*>(aData.Elements());
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// nsIOutputStream::Write is allowed to return short writes.
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while (written < aData.Length()) {
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uint32_t writeReturn;
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nsresult rv =
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mStream->Write(data + written, aData.Length() - written, &writeReturn);
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if (NS_FAILED(rv)) {
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mOutputError = rv;
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return IPC_OK();
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}
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written += writeReturn;
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}
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return IPC_OK();
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}
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mozilla::ipc::IPCResult WebBrowserPersistSerializeParent::Recv__delete__(
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const nsCString& aContentType, const nsresult& aStatus) {
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if (NS_SUCCEEDED(mOutputError)) {
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mOutputError = aStatus;
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}
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mFinish->OnFinish(mDocument, mStream, aContentType, mOutputError);
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mFinish = nullptr;
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return IPC_OK();
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}
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void WebBrowserPersistSerializeParent::ActorDestroy(ActorDestroyReason aWhy) {
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if (mFinish) {
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MOZ_ASSERT(aWhy != Deletion);
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// See comment in WebBrowserPersistDocumentParent::ActorDestroy
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// (or bug 1202887) for why this is deferred.
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nsCOMPtr<nsIRunnable> errorLater =
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NewRunnableMethod<nsCOMPtr<nsIWebBrowserPersistDocument>,
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nsCOMPtr<nsIOutputStream>, nsCString, nsresult>(
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"nsIWebBrowserPersistWriteCompletion::OnFinish", mFinish,
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&nsIWebBrowserPersistWriteCompletion::OnFinish, mDocument, mStream,
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""_ns, NS_ERROR_FAILURE);
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NS_DispatchToCurrentThread(errorLater);
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mFinish = nullptr;
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}
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}
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} // namespace mozilla
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