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lightning-sunbird  0.9+nobinonly
ControlEventSink.h
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00001 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
00002 /* ***** BEGIN LICENSE BLOCK *****
00003  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
00004  *
00005  * The contents of this file are subject to the Mozilla Public License Version
00006  * 1.1 (the "License"); you may not use this file except in compliance with
00007  * the License. You may obtain a copy of the License at
00008  * http://www.mozilla.org/MPL/
00009  *
00010  * Software distributed under the License is distributed on an "AS IS" basis,
00011  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
00012  * for the specific language governing rights and limitations under the
00013  * License.
00014  *
00015  * The Original Code is mozilla.org code.
00016  *
00017  * The Initial Developer of the Original Code is
00018  * Netscape Communications Corporation.
00019  * Portions created by the Initial Developer are Copyright (C) 1998
00020  * the Initial Developer. All Rights Reserved.
00021  *
00022  * Contributor(s):
00023  *   Adam Lock <adamlock@netscape.com>
00024  *
00025  * Alternatively, the contents of this file may be used under the terms of
00026  * either the GNU General Public License Version 2 or later (the "GPL"), or
00027  * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
00028  * in which case the provisions of the GPL or the LGPL are applicable instead
00029  * of those above. If you wish to allow use of your version of this file only
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00033  * and other provisions required by the GPL or the LGPL. If you do not delete
00034  * the provisions above, a recipient may use your version of this file under
00035  * the terms of any one of the MPL, the GPL or the LGPL.
00036  *
00037  * ***** END LICENSE BLOCK ***** */
00038 
00039 #ifndef CONTROLEVENTSINK_H
00040 #define CONTROLEVENTSINK_H
00041 
00042 // This class listens for events from the specified control
00043 
00044 class CControlEventSink : 
00045     public CComObjectRootEx<CComSingleThreadModel>,
00046     public IDispatch
00047 {
00048 public:
00049     CControlEventSink();
00050 
00051     // Current event connection point
00052     CComPtr<IConnectionPoint> m_spEventCP;
00053     CComPtr<ITypeInfo> m_spEventSinkTypeInfo;
00054     DWORD m_dwEventCookie;
00055     IID m_EventIID;
00056 
00057 protected:
00058     virtual ~CControlEventSink();
00059 
00060     static HRESULT WINAPI SinkQI(void* pv, REFIID riid, LPVOID* ppv, DWORD dw)
00061     {
00062         CControlEventSink *pThis = (CControlEventSink *) pv;
00063         if (!IsEqualIID(pThis->m_EventIID, GUID_NULL) && 
00064              IsEqualIID(pThis->m_EventIID, riid))
00065         {
00066             return pThis->QueryInterface(__uuidof(IDispatch), ppv);
00067         }
00068         return E_NOINTERFACE;
00069     }
00070 
00071 public:
00072 
00073 BEGIN_COM_MAP(CControlEventSink)
00074     COM_INTERFACE_ENTRY(IDispatch)
00075     COM_INTERFACE_ENTRY_FUNC_BLIND(0, SinkQI)
00076 END_COM_MAP()
00077 
00078     virtual HRESULT SubscribeToEvents(IUnknown *pControl);
00079     virtual void UnsubscribeFromEvents();
00080     virtual BOOL GetEventSinkIID(IUnknown *pControl, IID &iid, ITypeInfo **typeInfo);
00081     virtual HRESULT InternalInvoke(DISPID dispIdMember, REFIID riid, LCID lcid, WORD wFlags, DISPPARAMS *pDispParams, VARIANT *pVarResult, EXCEPINFO *pExcepInfo, UINT *puArgErr);
00082 
00083 // IDispatch
00084     virtual HRESULT STDMETHODCALLTYPE GetTypeInfoCount(/* [out] */ UINT __RPC_FAR *pctinfo);
00085     virtual HRESULT STDMETHODCALLTYPE GetTypeInfo(/* [in] */ UINT iTInfo, /* [in] */ LCID lcid, /* [out] */ ITypeInfo __RPC_FAR *__RPC_FAR *ppTInfo);
00086     virtual HRESULT STDMETHODCALLTYPE GetIDsOfNames(/* [in] */ REFIID riid, /* [size_is][in] */ LPOLESTR __RPC_FAR *rgszNames, /* [in] */ UINT cNames, /* [in] */ LCID lcid, /* [size_is][out] */ DISPID __RPC_FAR *rgDispId);
00087     virtual /* [local] */ HRESULT STDMETHODCALLTYPE Invoke(/* [in] */ DISPID dispIdMember, /* [in] */ REFIID riid, /* [in] */ LCID lcid, /* [in] */ WORD wFlags, /* [out][in] */ DISPPARAMS __RPC_FAR *pDispParams, /* [out] */ VARIANT __RPC_FAR *pVarResult, /* [out] */ EXCEPINFO __RPC_FAR *pExcepInfo, /* [out] */ UINT __RPC_FAR *puArgErr);
00088 };
00089 
00090 typedef CComObject<CControlEventSink> CControlEventSinkInstance;
00091 
00092 #endif