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/* $Id: EventImpl.h $ */
/** @file
* VirtualBox COM IEvent implementation
*/
/*
* Copyright (C) 2010-2012 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
#include "VirtualBoxBase.h"
class ATL_NO_VTABLE VBoxEvent :
public VirtualBoxBase,
VBOX_SCRIPTABLE_IMPL(IEvent)
{
public:
VIRTUALBOXBASE_ADD_ERRORINFO_SUPPORT(VBoxEvent, IEvent)
DECLARE_NOT_AGGREGATABLE(VBoxEvent)
DECLARE_PROTECT_FINAL_CONSTRUCT()
BEGIN_COM_MAP(VBoxEvent)
VBOX_DEFAULT_INTERFACE_ENTRIES(IEvent)
END_COM_MAP()
VBoxEvent() {}
virtual ~VBoxEvent() {}
HRESULT FinalConstruct();
void FinalRelease();
// public initializer/uninitializer for internal purposes only
HRESULT init(IEventSource *aSource, VBoxEventType_T aType, BOOL aWaitable);
void uninit();
// IEvent properties
STDMETHOD(COMGETTER(Type))(VBoxEventType_T *aType);
STDMETHOD(COMGETTER(Source))(IEventSource * *aSource);
STDMETHOD(COMGETTER(Waitable))(BOOL *aWaitable);
// IEvent methods
STDMETHOD(SetProcessed)();
STDMETHOD(WaitProcessed)(LONG aTimeout, BOOL *aResult);
private:
struct Data;
Data* m;
};
class ATL_NO_VTABLE VBoxVetoEvent :
public VBoxEvent,
VBOX_SCRIPTABLE_IMPL(IVetoEvent)
{
public:
VIRTUALBOXBASE_ADD_ERRORINFO_SUPPORT(VBoxVetoEvent, IVetoEvent)
DECLARE_NOT_AGGREGATABLE(VBoxVetoEvent)
DECLARE_PROTECT_FINAL_CONSTRUCT()
BEGIN_COM_MAP(VBoxVetoEvent)
COM_INTERFACE_ENTRY2(IEvent, IVetoEvent)
VBOX_DEFAULT_INTERFACE_ENTRIES(IVetoEvent)
END_COM_MAP()
VBoxVetoEvent() {}
virtual ~VBoxVetoEvent() {}
HRESULT FinalConstruct();
void FinalRelease();
// public initializer/uninitializer for internal purposes only
HRESULT init(IEventSource *aSource, VBoxEventType_T aType);
void uninit();
// IEvent properties
STDMETHOD(COMGETTER(Type))(VBoxEventType_T *aType)
{
return VBoxEvent::COMGETTER(Type)(aType);
}
STDMETHOD(COMGETTER(Source))(IEventSource * *aSource)
{
return VBoxEvent::COMGETTER(Source)(aSource);
}
STDMETHOD(COMGETTER(Waitable))(BOOL *aWaitable)
{
return VBoxEvent::COMGETTER(Waitable)(aWaitable);
}
// IEvent methods
STDMETHOD(SetProcessed)()
{
return VBoxEvent::SetProcessed();
}
STDMETHOD(WaitProcessed)(LONG aTimeout, BOOL *aResult)
{
return VBoxEvent::WaitProcessed(aTimeout, aResult);
}
// IVetoEvent methods
STDMETHOD(AddVeto)(IN_BSTR aVeto);
STDMETHOD(IsVetoed)(BOOL *aResult);
STDMETHOD(GetVetos)(ComSafeArrayOut(BSTR, aVetos));
private:
struct Data;
Data* m;
};
class ATL_NO_VTABLE EventSource :
public VirtualBoxBase,
VBOX_SCRIPTABLE_IMPL(IEventSource)
{
public:
VIRTUALBOXBASE_ADD_ERRORINFO_SUPPORT(EventSource, IEventSource)
DECLARE_NOT_AGGREGATABLE(EventSource)
DECLARE_PROTECT_FINAL_CONSTRUCT()
BEGIN_COM_MAP(EventSource)
VBOX_DEFAULT_INTERFACE_ENTRIES(IEventSource)
END_COM_MAP()
DECLARE_EMPTY_CTOR_DTOR(EventSource)
HRESULT FinalConstruct();
void FinalRelease();
// public initializer/uninitializer for internal purposes only
HRESULT init();
void uninit();
// IEventSource methods
STDMETHOD(CreateListener)(IEventListener **aListener);
STDMETHOD(CreateAggregator)(ComSafeArrayIn(IEventSource *, aSubordinates),
IEventSource **aAggregator);
STDMETHOD(RegisterListener)(IEventListener *aListener,
ComSafeArrayIn(VBoxEventType_T, aInterested),
BOOL aActive);
STDMETHOD(UnregisterListener)(IEventListener *aListener);
STDMETHOD(FireEvent)(IEvent *aEvent, LONG aTimeout, BOOL *aProcessed);
STDMETHOD(GetEvent)(IEventListener *aListener, LONG aTimeout,
IEvent **aEvent);
STDMETHOD(EventProcessed)(IEventListener *aListener, IEvent *aEvent);
private:
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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