gecko-dev/dom/filehandle/ActorsChild.h
Kan-Ru Chen f8100451db Bug 1314254 - Add mozilla::ipc::IPCResult type and convert IPDL handlers to use new return type. r=billm
We will use the new type for the generated IPDL message handler
prototype to make sure correct error handling method is called.

MozReview-Commit-ID: AzVbApxFGZ0
2016-11-15 04:26:00 +01:00

175 lines
4.2 KiB
C++

/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this file,
* You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifndef mozilla_dom_filehandle_ActorsChild_h
#define mozilla_dom_filehandle_ActorsChild_h
#include "js/RootingAPI.h"
#include "mozilla/Attributes.h"
#include "mozilla/dom/FileHandleCommon.h"
#include "mozilla/dom/PBackgroundFileHandleChild.h"
#include "mozilla/dom/PBackgroundFileRequestChild.h"
#include "mozilla/dom/PBackgroundMutableFileChild.h"
class nsCString;
namespace mozilla {
namespace dom {
class FileHandleBase;
class FileRequestBase;
class MutableFileBase;
class BackgroundMutableFileChildBase
: public ThreadObject
, public PBackgroundMutableFileChild
{
protected:
friend class MutableFileBase;
RefPtr<MutableFileBase> mTemporaryStrongMutableFile;
MutableFileBase* mMutableFile;
public:
void
EnsureDOMObject();
MutableFileBase*
GetDOMObject() const
{
AssertIsOnOwningThread();
return mMutableFile;
}
void
ReleaseDOMObject();
protected:
BackgroundMutableFileChildBase(DEBUGONLY(PRThread* aOwningThread));
~BackgroundMutableFileChildBase();
void
SendDeleteMeInternal();
virtual already_AddRefed<MutableFileBase>
CreateMutableFile() = 0;
// IPDL methods are only called by IPDL.
virtual void
ActorDestroy(ActorDestroyReason aWhy) override;
virtual PBackgroundFileHandleChild*
AllocPBackgroundFileHandleChild(const FileMode& aMode) override;
virtual bool
DeallocPBackgroundFileHandleChild(PBackgroundFileHandleChild* aActor)
override;
bool
SendDeleteMe() = delete;
};
class BackgroundFileHandleChild
: public ThreadObject
, public PBackgroundFileHandleChild
{
friend class BackgroundMutableFileChildBase;
friend class MutableFileBase;
// mTemporaryStrongFileHandle is strong and is only valid until the end of
// NoteComplete() member function or until the NoteActorDestroyed() member
// function is called.
RefPtr<FileHandleBase> mTemporaryStrongFileHandle;
// mFileHandle is weak and is valid until the NoteActorDestroyed() member
// function is called.
FileHandleBase* mFileHandle;
public:
explicit BackgroundFileHandleChild(DEBUGONLY(PRThread* aOwningThread,)
FileHandleBase* aFileHandle);
void
SendDeleteMeInternal();
private:
~BackgroundFileHandleChild();
void
NoteActorDestroyed();
void
NoteComplete();
// IPDL methods are only called by IPDL.
virtual void
ActorDestroy(ActorDestroyReason aWhy) override;
mozilla::ipc::IPCResult
RecvComplete(const bool& aAborted) override;
virtual PBackgroundFileRequestChild*
AllocPBackgroundFileRequestChild(const FileRequestParams& aParams)
override;
virtual bool
DeallocPBackgroundFileRequestChild(PBackgroundFileRequestChild* aActor)
override;
bool
SendDeleteMe() = delete;
};
class BackgroundFileRequestChild final
: public ThreadObject
, public PBackgroundFileRequestChild
{
friend class BackgroundFileHandleChild;
friend class FileHandleBase;
RefPtr<FileRequestBase> mFileRequest;
RefPtr<FileHandleBase> mFileHandle;
bool mActorDestroyed;
private:
// Only created by FileHandleBase.
explicit BackgroundFileRequestChild(DEBUGONLY(PRThread* aOwningThread,)
FileRequestBase* aFileRequest);
// Only destroyed by BackgroundFileHandleChild.
~BackgroundFileRequestChild();
void
HandleResponse(nsresult aResponse);
void
HandleResponse(const FileRequestGetFileResponse& aResponse);
void
HandleResponse(const nsCString& aResponse);
void
HandleResponse(const FileRequestMetadata& aResponse);
void
HandleResponse(JS::Handle<JS::Value> aResponse);
// IPDL methods are only called by IPDL.
virtual void
ActorDestroy(ActorDestroyReason aWhy) override;
virtual mozilla::ipc::IPCResult
Recv__delete__(const FileRequestResponse& aResponse) override;
virtual mozilla::ipc::IPCResult
RecvProgress(const uint64_t& aProgress,
const uint64_t& aProgressMax) override;
};
} // namespace dom
} // namespace mozilla
#endif // mozilla_dom_filehandle_ActorsChild_h