TeslaRel410/BORLAND/BC45/SOURCE/OCF/BOCOLE/BOLEFACT.CPP

//
//**************************************************************************
//
// BOleFact.cpp -- Implements the server-side helper for allowing OLE2 to
//                 create objects made available by Bolero server apps.
//
// Copyright (c) 1993,94 by Borland International, Inc. All rights reserved
//
//**************************************************************************

#include "BOleFact.h"
#include "BOleSvc.h"
#include "BOleIPS.h"
#include "BOleCMan.h"


//
//	DllGetClassObject
//
//
//
//

STDAPI DllGetClassObject(REFCLSID clsid, REFIID iid, void FAR* FAR* ppv)
{
	HRESULT hRes =  ResultFromScode(E_OUTOFMEMORY);
	return hRes;
}


STDAPI  DllCanUnloadNow()
{
	return ResultFromScode( S_OK );
}


BOleFact::BOleFact(BOleClassManager * pFact, IBUnknownMain *pOuter):
		RefCnt (1), 
		pObjCM(NULL), 
		hReg (0L), 
		regId (0),
		dwRegisterActiveObject (0),
		id (CLSID_NULL), 
		BOleComponent(pFact, (IBUnknownMain *) this),
		pIPEFact (NULL)
{
}

BOleFact::~BOleFact()
{
	if (pIPEFact) {
		pIPEFact->Release();
		pIPEFact = NULL;
	}
}

HRESULT _IFUNC BOleFact::QueryInterfaceMain(REFIID iid, LPVOID FAR* ppv)
{
	HRESULT hr = ResultFromScode(E_NOINTERFACE);
	*ppv = NULL;

	// interfaces
	
	SUCCEEDED(hr = IBClass_QueryInterface(this, iid, ppv))

	// base classes
	
	|| SUCCEEDED(hr = BOleComponent::QueryInterfaceMain(iid, ppv))
		
	// helpers
	;

	return hr;
}

HRESULT _IFUNC BOleFact::Init (BOOL fInProc, LPCOLESTR szProgId, IBClassMgr *pCM, BCID rid)
{
	pObjCM = pCM;
	regId = rid;

	// If the user's object is capable of being instantiated in its own
	// container, create a special BOleInProcFactory
	//
	if (fInProc) {
		pIPEFact = new BOleInProcFactory (pFactory, this, id);
		if (!pIPEFact)
			return ResultFromScode(E_OUTOFMEMORY);
	}

	return CLSIDFromProgID(szProgId, &id);
}

HRESULT _IFUNC BOleFact::Register (BOOL fSingleUse)
{
	HRESULT hErr;

	// register the class factory for this id
	//
	if (!SUCCEEDED(hErr = CoRegisterClassObject(
		id,
		(IClassFactory *)this,
		CLSCTX_LOCAL_SERVER,
		fSingleUse ? REGCLS_SINGLEUSE : REGCLS_MULTI_SEPARATE,
		&hReg))) {
		OLEHRES("Failed Registering", hErr);
		}

	// Register the embedding helper factory if we embed in ourselves
	if (pIPEFact) {
		if (!SUCCEEDED(hErr = pIPEFact->Register (fSingleUse)))
			return hErr;
	}

	// The online dox for CoLockObjectExternal say we should do this here
	//
	if (SUCCEEDED(hErr)) {
		LPCLASSFACTORY pWorkAround = this;
		CoLockObjectExternal (pWorkAround, TRUE, TRUE);
	}
	
	// if the class manager supports automation let's register it as "Active"
	//
	IDispatch *pDispatch;
	if (SUCCEEDED(pObjCM->QueryInterface(IID_IDispatch, &(LPVOID)pDispatch))) {
		RegisterActiveObject (pDispatch, id, NULL, &dwRegisterActiveObject);
		pDispatch->Release();
	}
	return hErr;
}

HRESULT _IFUNC BOleFact::Revoke ()
{
	if (hReg) {
		LPCLASSFACTORY pWorkAround = this;
		CoLockObjectExternal (pWorkAround, FALSE, TRUE);
		CoRevokeClassObject( hReg);
		hReg = 0;
	}

	if (dwRegisterActiveObject) {
		RevokeActiveObject (dwRegisterActiveObject, NULL);
		dwRegisterActiveObject = 0;
	}

	if (pIPEFact) {
		pIPEFact->Revoke ();
		pIPEFact->Release ();
		pIPEFact = NULL;
	}
	return NOERROR;
}

HRESULT _IFUNC BOleFact::GetClassID (LPCLSID pClass)
{
	*pClass = id;
	return NOERROR;
}

BOOL _IFUNC BOleFact::IsA (REFCLSID cid)
{
	return IsEqualCLSID(cid, id);
}

HRESULT _IFUNC BOleFact::CreateInstance(IUnknown FAR* pUnk, REFIID iid, LPVOID  FAR* ppv)
{
	HRESULT hr = ResultFromScode(E_FAIL);
	*ppv = 0L;

	PIUnknown pObj;
	IBClassMgr * pICM;
		
	if (SUCCEEDED(pObjCM->QueryInterface(IID_IBClassMgr, &(LPVOID)pICM))) {
		if (SUCCEEDED(pICM->ComponentCreate(&pObj, pUnk, regId))) {
			if (pUnk && iid == IID_IUnknown) {
				hr = NOERROR;			
				*ppv = pObj;	// always give out main IUnknown
			}
			else {
				hr = pObj->QueryInterface(iid, ppv);
				pObj->Release();	// QI bumps
			}
		}
		pICM->Release();
	}

	return hr;
}


HRESULT _IFUNC BOleFact::LockServer( BOOL fLock )
{
	LPCLASSFACTORY pICF = this;
	CoLockObjectExternal(pICF, fLock, TRUE);
	pFactory->ServerCount( fLock ? 1L : -1L);
	
	return NOERROR;
}

// Used by DllGetClassObject to return the interface to the factory which
// creates the default handler which will create the in-proc server object.
//
HRESULT _IFUNC BOleFact::GetEmbeddingHelperFactory (LPUNKNOWN *ppF)
{
	if (pIPEFact) {
		*ppF = pIPEFact;
		(*ppF)->AddRef();
		return NOERROR;
	}
	else {
		*ppF = NULL;
		return ResultFromScode(E_FAIL);
	}
}

// When Bolero container-side dialog boxes need to know whether to put the
// CLSID for our own factories in the dialog box, this is how they find out
//
BOOL _IFUNC BOleFact::AllowEmbedFromSelf ()
{
	return pIPEFact ? TRUE : FALSE;
}

//**************************************************************************
//
// BOleInProcFactory -- The role of this factory is to load the default
//                      handler on the server side when the container 
//                      side of an app needs to instantiate an object it 
//                      serves. 
//
//                      If we don't do this, the RPC/handler system 
//                      creates the server object as if it were an inproc 
//                      server with no handler, but our EXE-based objects 
//                      must use the default handler.
//
//**************************************************************************

//***********************************
//
// Implementation methods
//
//***********************************

BOleInProcFactory::BOleInProcFactory (BOleClassManager *pCM, BOleFact FAR *pF, REFIID iid) :  BOleComponent(pCM, NULL),
	iidServer (iid),
	nRef (1),
	pRealFactory (pF),
	regCookie (0)
{
	pF->AddRef();
}

BOleInProcFactory::~BOleInProcFactory ()
{
	if (pRealFactory) {
		pRealFactory->Release();
		pRealFactory = NULL;
	}
}

HRESULT _IFUNC BOleInProcFactory::Register (BOOL fSingleUse)
{
	HRESULT hr =  ::CoRegisterClassObject (
		iidServer, this, CLSCTX_INPROC_SERVER, 
		fSingleUse ? REGCLS_SINGLEUSE : REGCLS_MULTI_SEPARATE, &regCookie);

	if (SUCCEEDED(hr)) {
		LPCLASSFACTORY pWorkAround = this;
		CoLockObjectExternal (pWorkAround, TRUE, TRUE);
	}

	return hr;
}

HRESULT _IFUNC BOleInProcFactory::Revoke ()
{
	if (regCookie) {
		LPCLASSFACTORY pWorkAround = this;
		CoLockObjectExternal (pWorkAround, FALSE, TRUE);
		return ::CoRevokeClassObject (regCookie);
	}

	if (pRealFactory) {               // this breaks a cycle when we're 
		pRealFactory->Release();  // in the embed from file "registered case"
		pRealFactory = NULL;
	}
	// if we don't register we expect releasing BOleInProcFactory
	// to release BOleFact (since BOleInProcFactory is returned
	// from DllGetClassObject)
	//  
	
	return ResultFromScode (E_FAIL);
}

//***********************************
//
// IUnknown methods
//
//***********************************

HRESULT _IFUNC BOleInProcFactory::QueryInterfaceMain(REFIID riid, LPVOID FAR *ppObj)
{
	HRESULT hr;
	*ppObj = NULL;
	if (SUCCEEDED(hr = IClassFactory_QueryInterface (this, riid, ppObj))) {
	}
	else if (SUCCEEDED(hr = BOleComponent::QueryInterfaceMain(riid, ppObj))) {
	}
	return hr;
}

//***********************************
// 
// IClassFactory methods
//
//***********************************

HRESULT _IFUNC BOleInProcFactory::CreateInstance (LPUNKNOWN pUnkOuter, 
                                  REFIID iidContainer, LPVOID FAR* ppv)
{
	// We ask OLE2 to create an instance
	// of the default handler. The default handler uses pRealFactory to
	// call back to us when it's time to create the real server object.
	//
	return ::OleCreateEmbeddingHelper (iidServer, pUnkOuter, 
		EMBDHLP_INPROC_SERVER | EMBDHLP_DELAYCREATE, pRealFactory, 
		iidContainer, ppv);
}

HRESULT _IFUNC BOleInProcFactory::LockServer (BOOL fLock)
{
	::CoLockObjectExternal (this, fLock, TRUE);
	pFactory->ServerCount (fLock ? 1L : -1L);
	return NOERROR;
}