joachim99@75: /*
joachim99@75:  * Copyright (c) 2003, Sergey Zorin. All rights reserved.
joachim99@75:  *
joachim99@75:  * This software is distributable under the BSD license. See the terms
joachim99@75:  * of the BSD license in the LICENSE file provided with this software.
joachim99@75:  *
joachim99@75:  */
joachim99@75: 
joachim99@75: #include "class_factory.h"
joachim99@75: #include "diff_ext.h"
joachim99@75: #include "server.h"
joachim99@75: 
joachim99@75: CLASS_FACTORY::CLASS_FACTORY() {
joachim99@75:   _ref_count = 0L;
joachim99@75: 
joachim99@75:   SERVER::instance()->lock();
joachim99@75: }
joachim99@75: 
joachim99@75: CLASS_FACTORY::~CLASS_FACTORY() {
joachim99@75:   SERVER::instance()->release();
joachim99@75: }
joachim99@75: 
joachim99@75: STDMETHODIMP 
joachim99@75: CLASS_FACTORY::QueryInterface(REFIID riid, void** ppv) {
joachim99@75:   HRESULT ret = E_NOINTERFACE;
joachim99@75:   *ppv = 0;
joachim99@75: 
joachim99@75:   if(IsEqualIID(riid, IID_IUnknown) || IsEqualIID(riid, IID_IClassFactory)) {
joachim99@75:     *ppv = static_cast<CLASS_FACTORY*>(this);
joachim99@75: 
joachim99@75:     AddRef();
joachim99@75: 
joachim99@75:     ret = NOERROR;
joachim99@75:   }
joachim99@75: 
joachim99@75:   return ret;
joachim99@75: }
joachim99@75: 
joachim99@75: STDMETHODIMP_(ULONG) 
joachim99@75: CLASS_FACTORY::AddRef() {
joachim99@75:   return InterlockedIncrement((LPLONG)&_ref_count);
joachim99@75: }
joachim99@75: 
joachim99@75: STDMETHODIMP_(ULONG) 
joachim99@75: CLASS_FACTORY::Release() {
joachim99@75:   ULONG ret = 0L;
joachim99@75:   
joachim99@75:   if(InterlockedDecrement((LPLONG)&_ref_count) != 0)
joachim99@75:     ret = _ref_count;
joachim99@75:   else
joachim99@75:     delete this;
joachim99@75: 
joachim99@75:   return ret;
joachim99@75: }
joachim99@75: 
joachim99@75: STDMETHODIMP 
joachim99@75: CLASS_FACTORY::CreateInstance(IUnknown* outer, REFIID refiid, void** obj) {
joachim99@75:   HRESULT ret = CLASS_E_NOAGGREGATION;
joachim99@75:   *obj = 0;
joachim99@75: 
joachim99@75:   // Shell extensions typically don't support aggregation (inheritance)
joachim99@75:   if(outer == 0) {
joachim99@75:     DIFF_EXT* ext = new DIFF_EXT();
joachim99@75:   
joachim99@75:     if(ext == 0)
joachim99@75:       ret = E_OUTOFMEMORY;    
joachim99@75:     else
joachim99@75:       ret = ext->QueryInterface(refiid, obj);
joachim99@75:   }
joachim99@75:   
joachim99@75:   return ret;
joachim99@75: }
joachim99@75: 
joachim99@75: STDMETHODIMP 
joachim99@75: CLASS_FACTORY::LockServer(BOOL) {
joachim99@75:   return NOERROR;
joachim99@75: }