gecko-dev/dom/devicestorage/DeviceStorageRequestParent.h

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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* 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_devicestorage_DeviceStorageRequestParent_h
#define mozilla_dom_devicestorage_DeviceStorageRequestParent_h
#include "mozilla/dom/devicestorage/PDeviceStorageRequestParent.h"
#include "mozilla/dom/ContentChild.h"
#include "nsThreadUtils.h"
#include "nsDeviceStorage.h"
#include "nsTArray.h"
namespace mozilla {
namespace dom {
namespace devicestorage {
class DeviceStorageRequestParent : public PDeviceStorageRequestParent
{
public:
DeviceStorageRequestParent(const DeviceStorageParams& aParams);
NS_IMETHOD_(nsrefcnt) AddRef();
NS_IMETHOD_(nsrefcnt) Release();
virtual void ActorDestroy(ActorDestroyReason);
protected:
~DeviceStorageRequestParent();
private:
nsAutoRefCnt mRefCnt;
class CancelableRunnable : public nsRunnable
{
public:
CancelableRunnable(DeviceStorageRequestParent* aParent)
: mParent(aParent)
{
mCanceled = !(mParent->AddRunnable(this));
}
virtual ~CancelableRunnable() {
}
NS_IMETHOD Run() {
nsresult rv = NS_OK;
if (!mCanceled) {
rv = CancelableRun();
mParent->RemoveRunnable(this);
}
return rv;
}
void Cancel() {
mCanceled = true;
}
virtual nsresult CancelableRun() = 0;
protected:
nsRefPtr<DeviceStorageRequestParent> mParent;
private:
bool mCanceled;
};
class PostErrorEvent : public CancelableRunnable
{
public:
PostErrorEvent(DeviceStorageRequestParent* aParent, const char* aError);
virtual ~PostErrorEvent();
virtual nsresult CancelableRun();
private:
nsString mError;
};
class PostSuccessEvent : public CancelableRunnable
{
public:
PostSuccessEvent(DeviceStorageRequestParent* aParent);
virtual ~PostSuccessEvent();
virtual nsresult CancelableRun();
};
class PostBlobSuccessEvent : public CancelableRunnable
{
public:
PostBlobSuccessEvent(DeviceStorageRequestParent* aParent, DeviceStorageFile* aFile, uint32_t aLength, nsACString& aMimeType);
virtual ~PostBlobSuccessEvent();
virtual nsresult CancelableRun();
private:
uint32_t mLength;
nsRefPtr<DeviceStorageFile> mFile;
nsCString mMimeType;
};
class PostEnumerationSuccessEvent : public CancelableRunnable
{
public:
PostEnumerationSuccessEvent(DeviceStorageRequestParent* aParent, InfallibleTArray<DeviceStorageFileValue>& aPaths);
virtual ~PostEnumerationSuccessEvent();
virtual nsresult CancelableRun();
private:
InfallibleTArray<DeviceStorageFileValue> mPaths;
};
class WriteFileEvent : public CancelableRunnable
{
public:
WriteFileEvent(DeviceStorageRequestParent* aParent, DeviceStorageFile* aFile, nsIInputStream* aInputStream);
virtual ~WriteFileEvent();
virtual nsresult CancelableRun();
private:
nsRefPtr<DeviceStorageFile> mFile;
nsCOMPtr<nsIInputStream> mInputStream;
};
class DeleteFileEvent : public CancelableRunnable
{
public:
DeleteFileEvent(DeviceStorageRequestParent* aParent, DeviceStorageFile* aFile);
virtual ~DeleteFileEvent();
virtual nsresult CancelableRun();
private:
nsRefPtr<DeviceStorageFile> mFile;
};
class StatFileEvent : public CancelableRunnable
{
public:
StatFileEvent(DeviceStorageRequestParent* aParent, DeviceStorageFile* aFile);
virtual ~StatFileEvent();
virtual nsresult CancelableRun();
private:
nsRefPtr<DeviceStorageFile> mFile;
};
class ReadFileEvent : public CancelableRunnable
{
public:
ReadFileEvent(DeviceStorageRequestParent* aParent, DeviceStorageFile* aFile);
virtual ~ReadFileEvent();
virtual nsresult CancelableRun();
private:
nsRefPtr<DeviceStorageFile> mFile;
nsCString mMimeType;
};
class EnumerateFileEvent : public CancelableRunnable
{
public:
EnumerateFileEvent(DeviceStorageRequestParent* aParent, DeviceStorageFile* aFile, uint64_t aSince);
virtual ~EnumerateFileEvent();
virtual nsresult CancelableRun();
private:
nsRefPtr<DeviceStorageFile> mFile;
uint64_t mSince;
};
class PostPathResultEvent : public CancelableRunnable
{
public:
PostPathResultEvent(DeviceStorageRequestParent* aParent, const nsAString& aPath);
virtual ~PostPathResultEvent();
virtual nsresult CancelableRun();
private:
nsRefPtr<DeviceStorageFile> mFile;
nsString mPath;
};
class PostStatResultEvent : public CancelableRunnable
{
public:
PostStatResultEvent(DeviceStorageRequestParent* aParent,
int64_t aFreeBytes,
int64_t aTotalBytes);
virtual ~PostStatResultEvent();
virtual nsresult CancelableRun();
private:
int64_t mFreeBytes, mTotalBytes;
};
protected:
bool AddRunnable(CancelableRunnable* aRunnable) {
MutexAutoLock lock(mMutex);
if (mActorDestoryed)
return false;
mRunnables.AppendElement(aRunnable);
return true;
}
void RemoveRunnable(CancelableRunnable* aRunnable) {
MutexAutoLock lock(mMutex);
mRunnables.RemoveElement(aRunnable);
}
Mutex mMutex;
bool mActorDestoryed;
nsTArray<nsRefPtr<CancelableRunnable> > mRunnables;
};
} // namespace devicestorage
} // namespace dom
} // namespace mozilla
#endif