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/*
* Jitsi, the OpenSource Java VoIP and Instant Messaging client.
*
* Copyright @ 2015 Atlassian Pty Ltd
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef _JMSOFFICECOMM_DISPATCHIMPL_H_
#define _JMSOFFICECOMM_DISPATCHIMPL_H_
#include <oaidl.h>
#include "UnknownImpl.h"
/**
* Represents a base implementation of the <tt>IDispatch</tt> interface.
*
* @author Lyubomir Marinov
*/
template <class T, REFIID IID_T>
class DispatchImpl
: public UnknownImpl<T, IID_T>
{
public:
// IUnknown
STDMETHODIMP QueryInterface(REFIID iid, PVOID *obj)
{
HRESULT ret;
if (obj)
{
if (IID_IDispatch == iid)
{
static_cast<LPUNKNOWN>(this)->AddRef();
*obj = static_cast<LPDISPATCH>(this);
ret = S_OK;
}
else
ret = UnknownImpl<T, IID_T>::QueryInterface(iid, obj);
}
else
ret = E_POINTER;
return ret;
}
// IDispatch
STDMETHODIMP GetTypeInfoCount(UINT *pctinfo)
#ifdef DISPATCHIMPL_CREATESTDDISPATCH
{
LPDISPATCH iDispatch = getIDispatch();
HRESULT hr;
if (iDispatch)
hr = iDispatch->GetTypeInfoCount(pctinfo);
else if (pctinfo)
{
*pctinfo = 0;
hr = S_OK;
}
else
hr = E_INVALIDARG;
return hr;
}
#else
STDMETHODIMP_E_NOTIMPL_STUB
#endif /* #ifdef DISPATCHIMPL_CREATESTDDISPATCH */
STDMETHODIMP GetTypeInfo(UINT iTInfo, LCID lcid, LPTYPEINFO *ppTInfo)
#ifdef DISPATCHIMPL_CREATESTDDISPATCH
{
LPDISPATCH iDispatch = getIDispatch();
HRESULT hr;
if (iDispatch)
hr = iDispatch->GetTypeInfo(iTInfo, lcid, ppTInfo);
else if (ppTInfo)
{
*ppTInfo = NULL;
hr = TYPE_E_ELEMENTNOTFOUND;
}
else
hr = E_INVALIDARG;
return hr;
}
#else
STDMETHODIMP_E_NOTIMPL_STUB
#endif /* #ifdef DISPATCHIMPL_CREATESTDDISPATCH */
STDMETHODIMP GetIDsOfNames(REFIID riid, LPOLESTR *rgszNames, UINT cNames, LCID lcid, DISPID *rgDispId)
#ifdef DISPATCHIMPL_CREATESTDDISPATCH
{
LPDISPATCH iDispatch = getIDispatch();
HRESULT hr;
if (iDispatch)
hr = iDispatch->GetIDsOfNames(riid, rgszNames, cNames, lcid, rgDispId);
else
hr = TYPE_E_ELEMENTNOTFOUND;
return hr;
}
#else
STDMETHODIMP_E_NOTIMPL_STUB
#endif /* #ifdef DISPATCHIMPL_CREATESTDDISPATCH */
STDMETHODIMP Invoke(DISPID dispIdMember, REFIID riid, LCID lcid, WORD wFlags, DISPPARAMS *pDispParams, VARIANT *pVarResult, EXCEPINFO *pExcepInfo, UINT *puArgErr)
#ifdef DISPATCHIMPL_CREATESTDDISPATCH
{
LPDISPATCH iDispatch = getIDispatch();
HRESULT hr;
if (iDispatch)
hr = iDispatch->Invoke(dispIdMember, riid, lcid, wFlags, pDispParams, pVarResult, pExcepInfo, puArgErr);
else
hr = TYPE_E_ELEMENTNOTFOUND;
return hr;
}
#else
STDMETHODIMP_E_NOTIMPL_STUB
#endif /* #ifdef DISPATCHIMPL_CREATESTDDISPATCH */
protected:
DispatchImpl() : _iDispatch(NULL) {};
virtual ~DispatchImpl()
{
if (_iDispatch)
{
_iDispatch->Release();
_iDispatch = NULL;
}
}
private:
#ifdef DISPATCHIMPL_CREATESTDDISPATCH
LPDISPATCH getIDispatch()
{
if (!_iDispatch)
{
LPTYPEINFO iTypeInfo;
if (SUCCEEDED(
OutOfProcessServer::getTypeInfoOfGuid(
IID_T,
&iTypeInfo)))
{
LPUNKNOWN iUnknown;
if (SUCCEEDED(
::CreateStdDispatch(
this,
this,
iTypeInfo,
&iUnknown)))
{
LPDISPATCH iDispatch;
if (SUCCEEDED(
iUnknown->QueryInterface(
IID_IDispatch,
(PVOID *) &iDispatch)))
_iDispatch = iDispatch;
iUnknown->Release();
}
iTypeInfo->Release();
}
}
return _iDispatch;
}
#endif /* #ifdef DISPATCHIMPL_CREATESTDDISPATCH */
LPDISPATCH _iDispatch;
};
#endif /* #ifndef _JMSOFFICECOMM_DISPATCHIMPL_H_ */
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