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/* $Id$ */
/** @file
* VirtualBox COM IEvent implementation
*/
/*
* Copyright (C) 2010-2019 Oracle Corporation
*
* This file is part of VirtualBox Open Source Edition (OSE), as
* available from http://www.virtualbox.org. This file is free software;
* you can redistribute it and/or modify it under the terms of the GNU
* General Public License (GPL) as published by the Free Software
* Foundation, in version 2 as it comes in the "COPYING" file of the
* VirtualBox OSE distribution. VirtualBox OSE is distributed in the
* hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
*/
#ifndef ____H_EVENTIMPL
#define ____H_EVENTIMPL
#ifndef RT_WITHOUT_PRAGMA_ONCE
# pragma once
#endif
#include "EventWrap.h"
#include "EventSourceWrap.h"
#include "VetoEventWrap.h"
class ATL_NO_VTABLE VBoxEvent :
public EventWrap
{
public:
DECLARE_EMPTY_CTOR_DTOR(VBoxEvent)
HRESULT FinalConstruct();
void FinalRelease();
// public initializer/uninitializer for internal purposes only
HRESULT init(IEventSource *aSource, VBoxEventType_T aType, BOOL aWaitable);
void uninit();
private:
// wrapped IEvent properties
HRESULT getType(VBoxEventType_T *aType);
HRESULT getSource(ComPtr<IEventSource> &aSource);
HRESULT getWaitable(BOOL *aWaitable);
// wrapped IEvent methods
HRESULT setProcessed();
HRESULT waitProcessed(LONG aTimeout, BOOL *aResult);
struct Data;
Data* m;
};
class ATL_NO_VTABLE VBoxVetoEvent :
public VetoEventWrap
{
public:
DECLARE_EMPTY_CTOR_DTOR(VBoxVetoEvent)
HRESULT FinalConstruct();
void FinalRelease();
// public initializer/uninitializer for internal purposes only
HRESULT init(IEventSource *aSource, VBoxEventType_T aType);
void uninit();
private:
// wrapped IEvent properties
HRESULT getType(VBoxEventType_T *aType);
HRESULT getSource(ComPtr<IEventSource> &aSource);
HRESULT getWaitable(BOOL *aWaitable);
// wrapped IEvent methods
HRESULT setProcessed();
HRESULT waitProcessed(LONG aTimeout, BOOL *aResult);
// wrapped IVetoEvent methods
HRESULT addVeto(const com::Utf8Str &aReason);
HRESULT isVetoed(BOOL *aResult);
HRESULT getVetos(std::vector<com::Utf8Str> &aResult);
HRESULT addApproval(const com::Utf8Str &aReason);
HRESULT isApproved(BOOL *aResult);
HRESULT getApprovals(std::vector<com::Utf8Str> &aResult);
struct Data;
Data* m;
};
class ATL_NO_VTABLE EventSource :
public EventSourceWrap
{
public:
DECLARE_EMPTY_CTOR_DTOR(EventSource)
HRESULT FinalConstruct();
void FinalRelease();
// public initializer/uninitializer for internal purposes only
HRESULT init();
void uninit();
private:
// wrapped IEventSource methods
HRESULT createListener(ComPtr<IEventListener> &aListener);
HRESULT createAggregator(const std::vector<ComPtr<IEventSource> > &aSubordinates,
ComPtr<IEventSource> &aResult);
HRESULT registerListener(const ComPtr<IEventListener> &aListener,
const std::vector<VBoxEventType_T> &aInteresting,
BOOL aActive);
HRESULT unregisterListener(const ComPtr<IEventListener> &aListener);
HRESULT fireEvent(const ComPtr<IEvent> &aEvent,
LONG aTimeout,
BOOL *aResult);
HRESULT getEvent(const ComPtr<IEventListener> &aListener,
LONG aTimeout,
ComPtr<IEvent> &aEvent);
HRESULT eventProcessed(const ComPtr<IEventListener> &aListener,
const ComPtr<IEvent> &aEvent);
struct Data;
Data* m;
friend class ListenerRecord;
};
class VBoxEventDesc
{
public:
VBoxEventDesc() : mEvent(0), mEventSource(0)
{}
~VBoxEventDesc()
{}
/**
* This function to be used with some care, as arguments order must match
* attribute declaration order event class and its superclasses up to
* IEvent. If unsure, consult implementation in generated VBoxEvents.cpp.
*/
HRESULT init(IEventSource* aSource, VBoxEventType_T aType, ...);
/**
* Function similar to the above, but assumes that init() for this type
* already called once, so no need to allocate memory, and only reinit
* fields. Assumes event is subtype of IReusableEvent, asserts otherwise.
*/
HRESULT reinit(VBoxEventType_T aType, ...);
void uninit()
{
mEvent.setNull();
mEventSource.setNull();
}
void getEvent(IEvent **aEvent)
{
mEvent.queryInterfaceTo(aEvent);
}
BOOL fire(LONG aTimeout)
{
if (mEventSource && mEvent)
{
BOOL fDelivered = FALSE;
int rc = mEventSource->FireEvent(mEvent, aTimeout, &fDelivered);
AssertRCReturn(rc, FALSE);
return fDelivered;
}
return FALSE;
}
private:
ComPtr<IEvent> mEvent;
ComPtr<IEventSource> mEventSource;
};
#endif // ____H_EVENTIMPL
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