зеркало из https://github.com/mozilla/pjs.git
NOT PART OF BUILD. Event sink class for controls, first cut
This commit is contained in:
locka%iol.ie
Родитель
04309b9a82
Коммит
88bec411ef
|
|
@ -0,0 +1,204 @@
|
|||
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
|
||||
/* ***** BEGIN LICENSE BLOCK *****
|
||||
* Version: NPL 1.1/GPL 2.0/LGPL 2.1
|
||||
*
|
||||
* The contents of this file are subject to the Netscape Public License
|
||||
* Version 1.1 (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.mozilla.org/NPL/
|
||||
*
|
||||
* Software distributed under the License is distributed on an "AS IS" basis,
|
||||
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
|
||||
* for the specific language governing rights and limitations under the
|
||||
* License.
|
||||
*
|
||||
* The Original Code is mozilla.org code.
|
||||
*
|
||||
* The Initial Developer of the Original Code is
|
||||
* Netscape Communications Corporation.
|
||||
* Portions created by the Initial Developer are Copyright (C) 1998
|
||||
* the Initial Developer. All Rights Reserved.
|
||||
*
|
||||
* Contributor(s):
|
||||
*
|
||||
* Adam Lock <adamlock@netscape.com>
|
||||
*
|
||||
* Alternatively, the contents of this file may be used under the terms of
|
||||
* either the GNU General Public License Version 2 or later (the "GPL"), or
|
||||
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
|
||||
* in which case the provisions of the GPL or the LGPL are applicable instead
|
||||
* of those above. If you wish to allow use of your version of this file only
|
||||
* under the terms of either the GPL or the LGPL, and not to allow others to
|
||||
* use your version of this file under the terms of the NPL, indicate your
|
||||
* decision by deleting the provisions above and replace them with the notice
|
||||
* and other provisions required by the GPL or the LGPL. If you do not delete
|
||||
* the provisions above, a recipient may use your version of this file under
|
||||
* the terms of any one of the NPL, the GPL or the LGPL.
|
||||
*
|
||||
* ***** END LICENSE BLOCK ***** */
|
||||
|
||||
#include "StdAfx.h"
|
||||
|
||||
#include "ControlEventSink.h"
|
||||
|
||||
CControlEventSink::CControlEventSink() :
|
||||
m_dwEventCookie(0),
|
||||
m_EventIID(GUID_NULL)
|
||||
{
|
||||
}
|
||||
|
||||
CControlEventSink::~CControlEventSink()
|
||||
{
|
||||
UnsubscribeFromEvents();
|
||||
}
|
||||
|
||||
BOOL
|
||||
CControlEventSink::GetEventSinkIID(IUnknown *pControl, IID &iid)
|
||||
{
|
||||
iid = GUID_NULL;
|
||||
if (!pControl)
|
||||
{
|
||||
return E_INVALIDARG;
|
||||
}
|
||||
|
||||
// IProvideClassInfo2 way is easiest
|
||||
CComQIPtr<IProvideClassInfo2> classInfo2 = pControl;
|
||||
if (classInfo2)
|
||||
{
|
||||
classInfo2->GetGUID(GUIDKIND_DEFAULT_SOURCE_DISP_IID, &iid);
|
||||
if (!::IsEqualIID(iid, GUID_NULL))
|
||||
{
|
||||
return TRUE;
|
||||
}
|
||||
}
|
||||
|
||||
// Yuck, the hard way
|
||||
CComQIPtr<IProvideClassInfo> classInfo = pControl;
|
||||
if (!classInfo)
|
||||
{
|
||||
return FALSE;
|
||||
}
|
||||
|
||||
// Search the class type information for the default source interface
|
||||
// which is the outgoing event sink.
|
||||
|
||||
CComPtr<ITypeInfo> classTypeInfo;
|
||||
classInfo->GetClassInfo(&classTypeInfo);
|
||||
if (!classTypeInfo)
|
||||
{
|
||||
return FALSE;
|
||||
}
|
||||
TYPEATTR *classAttr = NULL;
|
||||
if (FAILED(classTypeInfo->GetTypeAttr(&classAttr)))
|
||||
{
|
||||
return FALSE;
|
||||
}
|
||||
INT implFlags = 0;
|
||||
for (UINT i = 0; i < classAttr->cImplTypes; i++)
|
||||
{
|
||||
// Search for the interface with the [default, source] attr
|
||||
if (SUCCEEDED(classTypeInfo->GetImplTypeFlags(i, &implFlags)) &&
|
||||
implFlags == (IMPLTYPEFLAG_FDEFAULT | IMPLTYPEFLAG_FSOURCE))
|
||||
{
|
||||
CComPtr<ITypeInfo> eventSinkTypeInfo;
|
||||
HREFTYPE hRefType;
|
||||
if (SUCCEEDED(classTypeInfo->GetRefTypeOfImplType(i, &hRefType)) &&
|
||||
SUCCEEDED(classTypeInfo->GetRefTypeInfo(hRefType, &eventSinkTypeInfo)))
|
||||
{
|
||||
TYPEATTR *eventSinkAttr = NULL;
|
||||
if (SUCCEEDED(eventSinkTypeInfo->GetTypeAttr(&eventSinkAttr)))
|
||||
{
|
||||
iid = eventSinkAttr->guid;
|
||||
eventSinkTypeInfo->ReleaseTypeAttr(eventSinkAttr);
|
||||
}
|
||||
}
|
||||
break;
|
||||
}
|
||||
}
|
||||
classTypeInfo->ReleaseTypeAttr(classAttr);
|
||||
|
||||
return (!::IsEqualIID(iid, GUID_NULL));
|
||||
}
|
||||
|
||||
void CControlEventSink::UnsubscribeFromEvents()
|
||||
{
|
||||
if (m_spEventCP)
|
||||
{
|
||||
// Unsubscribe and reset
|
||||
m_spEventCP->Unadvise(m_dwEventCookie);
|
||||
m_dwEventCookie = 0;
|
||||
m_spEventCP.Release();
|
||||
}
|
||||
}
|
||||
|
||||
HRESULT CControlEventSink::SubscribeToEvents(IUnknown *pControl)
|
||||
{
|
||||
if (!pControl)
|
||||
{
|
||||
return E_INVALIDARG;
|
||||
}
|
||||
|
||||
// Throw away any existing connections
|
||||
UnsubscribeFromEvents();
|
||||
|
||||
// Grab the outgoing event sink IID which will be used to subscribe
|
||||
// to events via the connection point container.
|
||||
|
||||
IID iidEventSink;
|
||||
if (!GetEventSinkIID(pControl, iidEventSink))
|
||||
{
|
||||
return E_FAIL;
|
||||
}
|
||||
|
||||
// Get the connection point
|
||||
CComQIPtr<IConnectionPointContainer> ccp = pControl;
|
||||
CComPtr<IConnectionPoint> cp;
|
||||
if (!ccp)
|
||||
{
|
||||
return E_FAIL;
|
||||
}
|
||||
|
||||
// Custom IID
|
||||
m_EventIID = iidEventSink;
|
||||
DWORD dwCookie = 0;
|
||||
if (!ccp ||
|
||||
FAILED(ccp->FindConnectionPoint(m_EventIID, &cp)) ||
|
||||
FAILED(cp->Advise(this, &m_dwEventCookie)))
|
||||
{
|
||||
return E_FAIL;
|
||||
}
|
||||
|
||||
m_spEventCP = cp;
|
||||
m_dwEventCookie = dwCookie;
|
||||
return S_OK;
|
||||
}
|
||||
|
||||
///////////////////////////////////////////////////////////////////////////////
|
||||
// IDispatch implementation
|
||||
|
||||
|
||||
HRESULT STDMETHODCALLTYPE CControlEventSink::GetTypeInfoCount(/* [out] */ UINT __RPC_FAR *pctinfo)
|
||||
{
|
||||
return E_NOTIMPL;
|
||||
}
|
||||
|
||||
|
||||
HRESULT STDMETHODCALLTYPE CControlEventSink::GetTypeInfo(/* [in] */ UINT iTInfo, /* [in] */ LCID lcid, /* [out] */ ITypeInfo __RPC_FAR *__RPC_FAR *ppTInfo)
|
||||
{
|
||||
return E_NOTIMPL;
|
||||
}
|
||||
|
||||
|
||||
HRESULT STDMETHODCALLTYPE CControlEventSink::GetIDsOfNames(/* [in] */ REFIID riid, /* [size_is][in] */ LPOLESTR __RPC_FAR *rgszNames, /* [in] */ UINT cNames, /* [in] */ LCID lcid, /* [size_is][out] */ DISPID __RPC_FAR *rgDispId)
|
||||
{
|
||||
return E_NOTIMPL;
|
||||
}
|
||||
|
||||
|
||||
HRESULT STDMETHODCALLTYPE CControlEventSink::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)
|
||||
{
|
||||
ATLTRACE(_T("Invoke(%d)\n"), (int) dispIdMember);
|
||||
return S_OK;
|
||||
}
|
||||
|
||||
|
||||
|
|
@ -0,0 +1,91 @@
|
|||
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
|
||||
/* ***** BEGIN LICENSE BLOCK *****
|
||||
* Version: NPL 1.1/GPL 2.0/LGPL 2.1
|
||||
*
|
||||
* The contents of this file are subject to the Netscape Public License
|
||||
* Version 1.1 (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.mozilla.org/NPL/
|
||||
*
|
||||
* Software distributed under the License is distributed on an "AS IS" basis,
|
||||
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
|
||||
* for the specific language governing rights and limitations under the
|
||||
* License.
|
||||
*
|
||||
* The Original Code is mozilla.org code.
|
||||
*
|
||||
* The Initial Developer of the Original Code is
|
||||
* Netscape Communications Corporation.
|
||||
* Portions created by the Initial Developer are Copyright (C) 1998
|
||||
* the Initial Developer. All Rights Reserved.
|
||||
*
|
||||
* Contributor(s):
|
||||
*
|
||||
* Adam Lock <adamlock@netscape.com>
|
||||
*
|
||||
* Alternatively, the contents of this file may be used under the terms of
|
||||
* either the GNU General Public License Version 2 or later (the "GPL"), or
|
||||
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
|
||||
* in which case the provisions of the GPL or the LGPL are applicable instead
|
||||
* of those above. If you wish to allow use of your version of this file only
|
||||
* under the terms of either the GPL or the LGPL, and not to allow others to
|
||||
* use your version of this file under the terms of the NPL, indicate your
|
||||
* decision by deleting the provisions above and replace them with the notice
|
||||
* and other provisions required by the GPL or the LGPL. If you do not delete
|
||||
* the provisions above, a recipient may use your version of this file under
|
||||
* the terms of any one of the NPL, the GPL or the LGPL.
|
||||
*
|
||||
* ***** END LICENSE BLOCK ***** */
|
||||
|
||||
#ifndef CONTROLEVENTSINK_H
|
||||
#define CONTROLEVENTSINK_H
|
||||
|
||||
// This class listens for events from the specified control
|
||||
|
||||
class CControlEventSink :
|
||||
public CComObjectRootEx<CComSingleThreadModel>,
|
||||
public IDispatch
|
||||
{
|
||||
public:
|
||||
CControlEventSink();
|
||||
|
||||
// Current event connection point
|
||||
CComPtr<IConnectionPoint> m_spEventCP;
|
||||
DWORD m_dwEventCookie;
|
||||
IID m_EventIID;
|
||||
|
||||
protected:
|
||||
virtual ~CControlEventSink();
|
||||
|
||||
static HRESULT WINAPI SinkQI(void* pv, REFIID riid, LPVOID* ppv, DWORD dw)
|
||||
{
|
||||
CControlEventSink *pThis = (CControlEventSink *) pv;
|
||||
if (!IsEqualIID(pThis->m_EventIID, GUID_NULL) &&
|
||||
IsEqualIID(pThis->m_EventIID, riid))
|
||||
{
|
||||
return pThis->QueryInterface(__uuidof(IDispatch), ppv);
|
||||
}
|
||||
return E_NOINTERFACE;
|
||||
}
|
||||
|
||||
public:
|
||||
|
||||
BEGIN_COM_MAP(CControlEventSink)
|
||||
COM_INTERFACE_ENTRY(IDispatch)
|
||||
COM_INTERFACE_ENTRY_FUNC_BLIND(0, SinkQI)
|
||||
END_COM_MAP()
|
||||
|
||||
virtual HRESULT SubscribeToEvents(IUnknown *pControl);
|
||||
virtual void UnsubscribeFromEvents();
|
||||
virtual BOOL GetEventSinkIID(IUnknown *pControl, IID &iid);
|
||||
|
||||
// IDispatch
|
||||
virtual HRESULT STDMETHODCALLTYPE GetTypeInfoCount(/* [out] */ UINT __RPC_FAR *pctinfo);
|
||||
virtual HRESULT STDMETHODCALLTYPE GetTypeInfo(/* [in] */ UINT iTInfo, /* [in] */ LCID lcid, /* [out] */ ITypeInfo __RPC_FAR *__RPC_FAR *ppTInfo);
|
||||
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);
|
||||
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);
|
||||
};
|
||||
|
||||
typedef CComObject<CControlEventSink> CControlEventSinkInstance;
|
||||
|
||||
#endif
|
||||
Загрузка…
Ссылка в новой задаче