954 lines
29 KiB
C++
954 lines
29 KiB
C++
//+-------------------------------------------------------------------------
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//
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// Microsoft Windows
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//
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// Copyright (C) Microsoft Corporation, 1999 - 1999
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//
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// File: copypast.cpp
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//
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//--------------------------------------------------------------------------
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#include "stdafx.h"
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#include "objfmts.h"
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#include "copypast.h"
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#include "multisel.h"
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#include "dbg.h"
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#include "rsltitem.h"
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///////////////////////////////////////////////////////////////////////////////
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///////////////////////////////////////////////////////////////////////////////
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/***************************************************************************\
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| NOTE: DataObject Cleanup works by these rules (see CNode::CDataObjectCleanup):
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| 1. Data object created for cut , copy or dragdrop registers every node added to it
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| 2. Nodes are registered in the static multimap, mapping node to the data object it belongs to.
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| 3. Node destructor checks the map and triggers cleanup for all affected data objects.
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| 4. Data Object cleanup is: a) unregistering its nodes,
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| b) release contained data objects
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| b) entering invalid state (allowing only removal of cut objects to succeed)
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| c) revoking itself from clipboard if it is on the clipboard.
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| It will not do any of following: a) release references to IComponents as long as is alive
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| b) prevent MMCN_CUTORMOVE to be send by invoking RemoveCutItems()
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\***************************************************************************/
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/***************************************************************************\
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*
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* METHOD: CMMCClipBoardDataObject~CMMCClipBoardDataObject
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*
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* PURPOSE: Destructor. Informs CNode's that they are no longer on clipboard
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*
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\***************************************************************************/
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CMMCClipBoardDataObject::~CMMCClipBoardDataObject()
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{
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DECLARE_SC(sc, TEXT("CMMCClipBoardDataObject::~CMMCClipBoardDataObject"));
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// inform all nodes put to clipboard about being removed from there
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// but do not ask to force clenup on itself - it is not needed (we are in desrtuctor)
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// and it is harmfull to cleanup ole in such a case (see bug #164789)
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sc = CNode::CDataObjectCleanup::ScUnadviseDataObject( this , false/*bForceDataObjectCleanup*/);
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if (sc)
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sc.TraceAndClear();
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}
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/***************************************************************************\
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*
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* METHOD: CMMCClipBoardDataObject::GetSourceProcessId
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*
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* PURPOSE: returns process id of the source data object
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*
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* PARAMETERS:
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* DWORD *pdwProcID - [out] id of source process
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*
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* RETURNS:
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* HRESULT - result code
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*
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\***************************************************************************/
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STDMETHODIMP CMMCClipBoardDataObject::GetSourceProcessId( DWORD *pdwProcID )
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{
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DECLARE_SC(sc, TEXT("CMMCClipBoardDataObject::GetSourceProcessID"));
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// should not be called on this object (too late)
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if ( !m_bObjectValid )
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return (sc = E_UNEXPECTED).ToHr();
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// parameter check
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sc = ScCheckPointers(pdwProcID);
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if (sc)
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return sc.ToHr();
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// return the id
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*pdwProcID = ::GetCurrentProcessId();
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return sc.ToHr();
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}
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/***************************************************************************\
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*
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* METHOD: CMMCClipBoardDataObject::GetAction
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*
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* PURPOSE: returns ction which created the data object
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*
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* PARAMETERS:
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* DATA_SOURCE_ACTION *peAction [out] - action
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*
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* RETURNS:
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* HRESULT - result code.
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*
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\***************************************************************************/
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STDMETHODIMP CMMCClipBoardDataObject::GetAction( DATA_SOURCE_ACTION *peAction )
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{
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DECLARE_SC(sc, TEXT("CMMCClipBoardDataObject::IsCreatedForCopy"));
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// should not be called on this object (too late)
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if ( !m_bObjectValid )
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return (sc = E_UNEXPECTED).ToHr();
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// parameter check
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sc = ScCheckPointers(peAction);
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if (sc)
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return sc.ToHr();
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// return the action
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*peAction = m_eOperation;
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return sc.ToHr();
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}
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/***************************************************************************\
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*
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* METHOD: CMMCClipBoardDataObject::GetCount
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*
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* PURPOSE: Retuns the count of contined snapin data objects
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*
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* PARAMETERS:
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* DWORD *pdwCount [out] - count of objects
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*
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* RETURNS:
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* HRESULT - result code. S_OK, or error code
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*
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\***************************************************************************/
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STDMETHODIMP CMMCClipBoardDataObject::GetCount( DWORD *pdwCount )
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{
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DECLARE_SC(sc, TEXT("CMMCClipBoardDataObject::GetCount"));
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// should not be called on this object (too late)
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if ( !m_bObjectValid )
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return (sc = E_UNEXPECTED).ToHr();
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// parameter check
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sc = ScCheckPointers(pdwCount);
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if (sc)
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return sc.ToHr();
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*pdwCount = m_SelectionObjects.size();
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return sc.ToHr();
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}
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/***************************************************************************\
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*
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* METHOD: CMMCClipBoardDataObject::GetDataObject
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*
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* PURPOSE: Returns one of contained snapin data objects
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*
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* PARAMETERS:
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* DWORD dwIndex [in] - index of reqested object
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* IDataObject **ppObject [out] - requested object
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* DWORD *pdwFlags [out] - object flags
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*
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* RETURNS:
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* HRESULT - result code. S_OK, or error code
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*
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\***************************************************************************/
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STDMETHODIMP CMMCClipBoardDataObject::GetDataObject( DWORD dwIdx, IDataObject **ppObject, DWORD *pdwFlags )
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{
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DECLARE_SC(sc, TEXT("CMMCClipBoardDataObject::GetDataObject"));
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// should not be called on this object (too late)
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if ( !m_bObjectValid )
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return (sc = E_UNEXPECTED).ToHr();
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// check out param
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sc = ScCheckPointers(ppObject, pdwFlags);
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if (sc)
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return sc.ToHr();
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// init out param
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*ppObject = NULL;
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*pdwFlags = 0;
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// more parameter check
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if ( dwIdx >= m_SelectionObjects.size() )
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return (sc = E_INVALIDARG).ToHr();
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// return the object
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IDataObjectPtr spObject = m_SelectionObjects[dwIdx].spDataObject;
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*ppObject = spObject.Detach();
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*pdwFlags = m_SelectionObjects[dwIdx].dwSnapinOptions;
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return sc.ToHr();
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}
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///////////////////////////////////////////////////////////////////////////////
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/***************************************************************************\
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*
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* METHOD: CMMCClipBoardDataObject::ScGetSingleSnapinObject
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*
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* PURPOSE: Returns interface to data object created by the source snapin
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* NOTE: returns S_FALSE (and NULL ptr) when snapin count is not
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* equal to one
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*
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* PARAMETERS:
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* IDataObject **ppDataObject [out] - interface to data object
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*
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* RETURNS:
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* HRESULT - result code. S_OK, or error code
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*
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\***************************************************************************/
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SC CMMCClipBoardDataObject::ScGetSingleSnapinObject( IDataObject **ppDataObject )
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{
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DECLARE_SC(sc, TEXT("CMMCClipBoardDataObject::GetContainedSnapinObject"));
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// should not be called on this object (too late)
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if ( !m_bObjectValid )
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return sc = E_UNEXPECTED;
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// parameter check
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sc = ScCheckPointers( ppDataObject );
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if (sc)
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return sc;
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// init out parameter
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*ppDataObject = NULL;
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// we can only resolve to the snapin if we have only one of them
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if ( m_SelectionObjects.size() != 1 )
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return sc = S_FALSE;
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// ask for snapins DO
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IDataObjectPtr spDataObject = m_SelectionObjects[0].spDataObject;
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// return
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*ppDataObject = spDataObject.Detach();
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return sc;
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}
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/***************************************************************************\
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*
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* METHOD: CMMCClipBoardDataObject::GetDataHere
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*
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* PURPOSE: Implements IDataObject::GetDataHere. Forwards to snapin or fails
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*
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* PARAMETERS:
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* LPFORMATETC lpFormatetc
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* LPSTGMEDIUM lpMedium
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*
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* RETURNS:
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* HRESULT - result code. S_OK, or error code
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*
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\***************************************************************************/
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STDMETHODIMP CMMCClipBoardDataObject::GetDataHere(LPFORMATETC lpFormatetc, LPSTGMEDIUM lpMedium)
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{
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DECLARE_SC(sc, TEXT("CMMCClipBoardDataObject::GetDataHere"));
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// should not be called on this object (too late)
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if ( !m_bObjectValid )
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return (sc = E_UNEXPECTED).ToHr();
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// parameter check
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sc = ScCheckPointers(lpFormatetc, lpMedium);
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if (sc)
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return sc.ToHr();
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// try to get the snapin
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IDataObjectPtr spDataObject;
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sc = ScGetSingleSnapinObject( &spDataObject );
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if (sc)
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return sc.ToHr();
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// we do not support any clipboard format at all ourselves
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if (sc == S_FALSE)
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return (sc = DATA_E_FORMATETC).ToHr();
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// recheck
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sc = ScCheckPointers( spDataObject, E_UNEXPECTED );
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if (sc)
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return sc.ToHr();
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// forward to the snapin
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sc = spDataObject->GetDataHere(lpFormatetc, lpMedium);
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if (sc)
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return sc.ToHr();
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return sc.ToHr();
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}
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/***************************************************************************\
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*
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* METHOD: CMMCClipBoardDataObject::GetData
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*
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* PURPOSE: Implements IDataObject::GetData. Forwards to snapin or fails
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*
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* PARAMETERS:
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* LPFORMATETC lpFormatetcIn
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* LPSTGMEDIUM lpMedium
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*
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* RETURNS:
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* HRESULT - result code. S_OK, or error code
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*
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\***************************************************************************/
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STDMETHODIMP CMMCClipBoardDataObject::GetData(LPFORMATETC lpFormatetcIn, LPSTGMEDIUM lpMedium)
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{
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DECLARE_SC(sc, TEXT("CMMCClipBoardDataObject::GetData"));
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// should not be called on this object (too late)
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if ( !m_bObjectValid )
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return (sc = E_UNEXPECTED).ToHr();
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// parameter check
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sc = ScCheckPointers(lpFormatetcIn, lpMedium);
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if (sc)
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return sc.ToHr();
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// try to get the snapin
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IDataObjectPtr spDataObject;
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sc = ScGetSingleSnapinObject( &spDataObject );
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if (sc)
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return sc.ToHr();
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// we do not support any clipboard format at all ourselves
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if (sc == S_FALSE)
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return (sc = DATA_E_FORMATETC).ToHr();
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// recheck
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sc = ScCheckPointers( spDataObject, E_UNEXPECTED );
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if (sc)
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return sc.ToHr();
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// forward to the snapin
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sc = spDataObject->GetData(lpFormatetcIn, lpMedium);
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if (sc)
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{
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HRESULT hr = sc.ToHr();
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sc.Clear(); // ignore the error
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return hr;
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}
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return sc.ToHr();
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}
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/***************************************************************************\
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*
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* METHOD: CMMCClipBoardDataObject::EnumFormatEtc
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*
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* PURPOSE: Implements IDataObject::EnumFormatEtc. Forwards to snapin or fails
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*
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* PARAMETERS:
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* DWORD dwDirection
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* LPENUMFORMATETC* ppEnumFormatEtc
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*
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* RETURNS:
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* HRESULT - result code. S_OK, or error code
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*
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\***************************************************************************/
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STDMETHODIMP CMMCClipBoardDataObject::EnumFormatEtc(DWORD dwDirection, LPENUMFORMATETC* ppEnumFormatEtc)
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{
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DECLARE_SC(sc, TEXT("CMMCClipBoardDataObject::EnumFormatEtc"));
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// should not be called on this object (too late)
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if ( !m_bObjectValid )
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return (sc = E_UNEXPECTED).ToHr();
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// parameter check
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sc = ScCheckPointers(ppEnumFormatEtc);
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if (sc)
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return sc.ToHr();
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// init out parameter
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*ppEnumFormatEtc = NULL;
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IEnumFORMATETCPtr spEnum;
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std::vector<FORMATETC> vecFormats;
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// add own entry
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if (dwDirection == DATADIR_GET)
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{
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FORMATETC fmt ={GetWrapperCF(), NULL, DVASPECT_CONTENT, -1, TYMED_HGLOBAL};
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vecFormats.push_back( fmt );
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}
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// try to get the snapin
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IDataObjectPtr spDataObject;
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sc = ScGetSingleSnapinObject( &spDataObject );
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if (sc)
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return sc.ToHr();
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// add snapins formats (when we have one-and-only snapin)
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IEnumFORMATETCPtr spEnumSnapin;
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if (sc == S_OK)
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{
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// recheck
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sc = ScCheckPointers( spDataObject, E_UNEXPECTED );
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if (sc)
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return sc.ToHr();
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// forward to the snapin
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sc = spDataObject->EnumFormatEtc(dwDirection, &spEnumSnapin);
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if ( !sc.IsError() )
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{
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// recheck the pointer
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sc = ScCheckPointers( spEnumSnapin );
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if (sc)
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return sc.ToHr();
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// reset the enumeration
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sc = spEnumSnapin->Reset();
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if (sc)
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return sc.ToHr();
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FORMATETC frm;
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ZeroMemory( &frm, sizeof(frm) );
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while ( (sc = spEnumSnapin->Next( 1, &frm, NULL )) == S_OK )
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{
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vecFormats.push_back( frm );
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}
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// trap the error
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if (sc)
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return sc.ToHr();
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}
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else
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{
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sc.Clear(); // ignore the error - some snapins does not implement it
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}
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}
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if ( vecFormats.size() == 0 ) // have nothing to return ?
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return (sc = E_FAIL).ToHr();
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// create the enumerator
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sc = ::GetObjFormats( vecFormats.size(), vecFormats.begin(), (void **)ppEnumFormatEtc );
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if (sc)
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return sc.ToHr();
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return sc.ToHr();
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}
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/***************************************************************************\
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*
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* METHOD: CMMCClipBoardDataObject::QueryGetData
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*
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* PURPOSE: Implements IDataObject::QueryGetData. Forwards to snapin or fails
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*
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* PARAMETERS:
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* LPFORMATETC lpFormatetc
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*
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* RETURNS:
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* HRESULT - result code. S_OK, or error code
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*
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\***************************************************************************/
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STDMETHODIMP CMMCClipBoardDataObject::QueryGetData(LPFORMATETC lpFormatetc)
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{
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DECLARE_SC(sc, TEXT("CMMCClipBoardDataObject::QueryGetData"));
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// should not be called on this object (too late)
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if ( !m_bObjectValid )
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return (sc = E_UNEXPECTED).ToHr();
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// parameter check
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sc = ScCheckPointers(lpFormatetc);
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if (sc)
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return sc.ToHr();
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// try to get the snapin
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IDataObjectPtr spDataObject;
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sc = ScGetSingleSnapinObject( &spDataObject );
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if (sc)
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return sc.ToHr();
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// we do not support any clipboard format at all ourselves
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if (sc == S_FALSE)
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return DV_E_FORMATETC; // not assigning to sc - not an error
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// recheck
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sc = ScCheckPointers( spDataObject, E_UNEXPECTED );
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if (sc)
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return sc.ToHr();
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// forward to the snapin
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sc = spDataObject->QueryGetData(lpFormatetc);
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if (sc)
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{
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HRESULT hr = sc.ToHr();
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sc.Clear(); // ignore the error
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return hr;
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}
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return sc.ToHr();
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}
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/***************************************************************************\
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*
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* METHOD: CMMCClipBoardDataObject::RemoveCutItems
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*
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* PURPOSE: Called to remove copied objects from the source snapin
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*
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* PARAMETERS:
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* DWORD dwIndex [in] snapin index
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* IDataObject *pCutDataObject [in] items to be removed
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*
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* RETURNS:
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* SC - result code
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*
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\***************************************************************************/
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STDMETHODIMP CMMCClipBoardDataObject::RemoveCutItems( DWORD dwIndex, IDataObject *pCutDataObject )
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{
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DECLARE_SC(sc, TEXT("CMMCClipBoardDataObject::RemoveCutItems"));
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// this is the only method allowed to be called on invalid object
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// check param
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sc = ScCheckPointers(pCutDataObject);
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if (sc)
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return sc.ToHr();
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// more parameter check
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if ( dwIndex >= m_SelectionObjects.size() )
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return (sc = E_INVALIDARG).ToHr();
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// get to the snapin
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IComponent *pComponent = m_SelectionObjects[dwIndex].spComponent;
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sc = ScCheckPointers( pComponent, E_UNEXPECTED );
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if (sc)
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return sc.ToHr();
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sc = pComponent->Notify( NULL, MMCN_CUTORMOVE,
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reinterpret_cast<LONG_PTR>(pCutDataObject), 0 );
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if (sc)
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return sc.ToHr();
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return sc.ToHr();
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}
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///////////////////////////////////////////////////////////////////////////////
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/***************************************************************************\
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*
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* METHOD: CMMCClipBoardDataObject::ScCreateInstance
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*
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* PURPOSE: Helper method (static) to create instance of CMMCClipBoardDataObject
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*
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* PARAMETERS:
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* DATA_SOURCE_ACTION operation [in] why the object is created
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* CMTNode *pTiedObj [in] object to trigger revoking
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* CMMCClipBoardDataObject **ppRawObject [out] raw pointer
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* IMMCClipboardDataObject **ppInterface [out] pointer to interface
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*
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* RETURNS:
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* SC - result code
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*
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|
\***************************************************************************/
|
|
SC CMMCClipBoardDataObject::ScCreateInstance(DATA_SOURCE_ACTION operation,
|
|
CMMCClipBoardDataObject **ppRawObject,
|
|
IMMCClipboardDataObject **ppInterface)
|
|
{
|
|
DECLARE_SC(sc, TEXT("CMMCClipBoardDataObject::ScCreateInstance"));
|
|
|
|
// parameter check;
|
|
sc = ScCheckPointers( ppRawObject, ppInterface );
|
|
if (sc)
|
|
return sc;
|
|
|
|
// out param initialization
|
|
*ppInterface = NULL;
|
|
*ppRawObject = NULL;
|
|
|
|
typedef CComObject<CMMCClipBoardDataObject> CreatedObj;
|
|
CreatedObj *pCreatedObj;
|
|
|
|
sc = CreatedObj::CreateInstance( &pCreatedObj );
|
|
if (sc)
|
|
return sc;
|
|
|
|
// add first reference if non null;
|
|
IMMCClipboardDataObjectPtr spMMCDataObject = pCreatedObj;
|
|
|
|
// recheck
|
|
sc = ScCheckPointers( spMMCDataObject, E_UNEXPECTED );
|
|
if (sc)
|
|
{
|
|
delete pCreatedObj;
|
|
return sc;
|
|
}
|
|
|
|
// init the object
|
|
static_cast<CMMCClipBoardDataObject *>(pCreatedObj)->m_eOperation = operation;
|
|
|
|
// return 'em
|
|
*ppInterface = spMMCDataObject.Detach();
|
|
*ppRawObject = pCreatedObj;
|
|
|
|
return sc;
|
|
}
|
|
|
|
/***************************************************************************\
|
|
*
|
|
* METHOD: CMMCClipBoardDataObject::ScAddSnapinDataObject
|
|
*
|
|
* PURPOSE: Part of creating DO for the operation
|
|
* Adds snapins data to be carried inside
|
|
*
|
|
* PARAMETERS:
|
|
* IComponent *pComponent [in] - source snapin, which data id added
|
|
* IDataObject *pObject [in] - data object supplied by snapin
|
|
* bool bCopyEnabled [in] - if snapin allows to copy the data
|
|
* bool bCutEnabled [in] - if snapin allows to move the data
|
|
*
|
|
* RETURNS:
|
|
* SC - result code
|
|
*
|
|
\***************************************************************************/
|
|
SC CMMCClipBoardDataObject::ScAddSnapinDataObject( const CNodePtrArray& nodes,
|
|
IComponent *pComponent,
|
|
IDataObject *pObject,
|
|
bool bCopyEnabled, bool bCutEnabled )
|
|
{
|
|
DECLARE_SC(sc, TEXT("CMMCClipBoardDataObject::ScAddSnapinDataObject"));
|
|
|
|
// parameter check
|
|
sc = ScCheckPointers( pComponent, pObject );
|
|
if (sc)
|
|
return sc;
|
|
|
|
// create the object;
|
|
ObjectEntry object;
|
|
object.dwSnapinOptions = (bCopyEnabled ? COPY_ALLOWED : 0) |
|
|
(bCutEnabled ? MOVE_ALLOWED : 0);
|
|
object.spComponent = pComponent;
|
|
object.spDataObject = pObject;
|
|
|
|
// register the nodes to invalidate this data object on destruction
|
|
for ( CNodePtrArray::const_iterator it = nodes.begin(); it != nodes.end(); ++it )
|
|
{
|
|
CNode *pNode = *it;
|
|
sc = ScCheckPointers( pNode, E_UNEXPECTED );
|
|
if (sc)
|
|
return sc;
|
|
|
|
// register node to revoke this object from destructor
|
|
sc = CNode::CDataObjectCleanup::ScRegisterNode( pNode, this );
|
|
if (sc)
|
|
return sc;
|
|
}
|
|
|
|
// add to the array
|
|
m_SelectionObjects.push_back(object);
|
|
|
|
return sc;
|
|
}
|
|
|
|
/***************************************************************************\
|
|
*
|
|
* METHOD: CMMCClipBoardDataObject::GetNodeCopyAndCutVerbs
|
|
*
|
|
* PURPOSE: Calculates if copy and cut verb are enabled for node
|
|
*
|
|
* PARAMETERS:
|
|
* CNode* pNode [in] node to examine
|
|
* IDataObject *pDataObject [in] snapin's data object
|
|
* bool bScopePane [in] Scope or result (item for which the verb states needed).
|
|
* LPARAM lvData [in] If result then the LVDATA.
|
|
* bool *pCopyEnabled [out] true == Copy verb enabled
|
|
* bool *bCutEnabled [out] true == Cut verb enabled
|
|
*
|
|
* RETURNS:
|
|
* SC - result code
|
|
*
|
|
\***************************************************************************/
|
|
SC CMMCClipBoardDataObject::ScGetNodeCopyAndCutVerbs( CNode* pNode, IDataObject *pDataObject,
|
|
bool bScopePane, LPARAM lvData,
|
|
bool *pbCopyEnabled, bool *pbCutEnabled )
|
|
{
|
|
DECLARE_SC(sc, TEXT("CMMCClipBoardDataObject::ScGetNodeCopyAndCutVerbs"));
|
|
|
|
// paramter check
|
|
sc = ScCheckPointers(pNode, pDataObject, pbCopyEnabled, pbCutEnabled);
|
|
if (sc)
|
|
return sc;
|
|
|
|
// init out parameters
|
|
*pbCopyEnabled = *pbCutEnabled = false;
|
|
|
|
// Create temp verb with given context.
|
|
CComObject<CTemporaryVerbSet> stdVerbTemp;
|
|
|
|
sc = stdVerbTemp.ScInitialize(pDataObject, pNode, bScopePane, lvData);
|
|
|
|
BOOL bFlag = FALSE;
|
|
stdVerbTemp.GetVerbState(MMC_VERB_COPY, ENABLED, &bFlag);
|
|
*pbCopyEnabled = bFlag;
|
|
stdVerbTemp.GetVerbState(MMC_VERB_CUT, ENABLED, &bFlag);
|
|
*pbCutEnabled = bFlag;
|
|
|
|
return sc;
|
|
}
|
|
|
|
|
|
/***************************************************************************\
|
|
*
|
|
* METHOD: CMMCClipBoardDataObject::ScCreate
|
|
*
|
|
* PURPOSE: helper. Creates and initializes CMMCClipBoardDataObject
|
|
*
|
|
* PARAMETERS:
|
|
* DATA_SOURCE_ACTION operation [in] - for which operation (d&d, cut, copy)
|
|
* CNode* pNode [in] - Node to tie to
|
|
* bool bScopePane [in] - if it is scope pane operation
|
|
* bool bMultiSelect [in] - if it is multiselection
|
|
* LPARAM lvData [in] - lvdata for result item
|
|
* IMMCClipboardDataObject **ppMMCDO [out] - created data object
|
|
* bool& bContainsItems [out] - If snapin does not support cut/copy then
|
|
* dataobjets will not be added and this is
|
|
* not an error
|
|
*
|
|
* RETURNS:
|
|
* SC - result code
|
|
*
|
|
\***************************************************************************/
|
|
SC CMMCClipBoardDataObject::ScCreate( DATA_SOURCE_ACTION operation,
|
|
CNode* pNode, bool bScopePane,
|
|
bool bMultiSelect, LPARAM lvData,
|
|
IMMCClipboardDataObject **ppMMCDataObject,
|
|
bool& bContainsItems )
|
|
{
|
|
DECLARE_SC(sc, TEXT("CMMCClipBoardDataObject::Create"));
|
|
|
|
bContainsItems = false;
|
|
|
|
// parameter check
|
|
sc = ScCheckPointers( ppMMCDataObject, pNode );
|
|
if (sc)
|
|
return sc;
|
|
|
|
// init out param
|
|
*ppMMCDataObject = NULL;
|
|
|
|
// get MT node, view data;
|
|
CMTNode* pMTNode = pNode->GetMTNode();
|
|
CViewData *pViewData = pNode->GetViewData();
|
|
sc = ScCheckPointers( pMTNode, pViewData, E_UNEXPECTED );
|
|
if (sc)
|
|
return sc;
|
|
|
|
// create data object to be used for data transfer
|
|
CMMCClipBoardDataObject *pResultObject = NULL;
|
|
IMMCClipboardDataObjectPtr spResultInterface;
|
|
sc = ScCreateInstance(operation, &pResultObject, &spResultInterface);
|
|
if (sc)
|
|
return sc;
|
|
|
|
// recheck pointers
|
|
sc = ScCheckPointers( pResultObject, spResultInterface, E_UNEXPECTED );
|
|
if (sc)
|
|
return sc;
|
|
|
|
// valid from the start
|
|
pResultObject->m_bObjectValid = true;
|
|
|
|
// add data to the object...
|
|
|
|
if (!bMultiSelect) // single selection
|
|
{
|
|
// get snapins data object
|
|
IDataObjectPtr spDataObject;
|
|
CComponent* pCComponent;
|
|
bool bScopeItem = bScopePane;
|
|
sc = pNode->ScGetDataObject(bScopePane, lvData, bScopeItem, &spDataObject, &pCComponent);
|
|
if (sc)
|
|
return sc;
|
|
|
|
// recheck data object
|
|
if ( IS_SPECIAL_DATAOBJECT ( spDataObject.GetInterfacePtr() ) )
|
|
{
|
|
spDataObject.Detach();
|
|
return sc = E_UNEXPECTED;
|
|
}
|
|
|
|
sc = ScCheckPointers(pCComponent, E_UNEXPECTED);
|
|
if (sc)
|
|
return sc;
|
|
|
|
IComponent *pComponent = pCComponent->GetIComponent();
|
|
sc = ScCheckPointers(pComponent, E_UNEXPECTED);
|
|
if (sc)
|
|
return sc;
|
|
|
|
// add snapin's data object to transfer object
|
|
sc = pResultObject->ScAddDataObjectForItem( pNode, bScopePane, lvData,
|
|
pComponent, spDataObject,
|
|
bContainsItems );
|
|
if (sc)
|
|
return sc;
|
|
|
|
if (! bContainsItems)
|
|
return sc;
|
|
}
|
|
else // result pane : multi selection
|
|
{
|
|
// get pointer to multiselection
|
|
CMultiSelection *pMultiSel = pViewData->GetMultiSelection();
|
|
sc = ScCheckPointers( pMultiSel, E_UNEXPECTED );
|
|
if (sc)
|
|
return sc;
|
|
|
|
sc = pMultiSel->ScGetSnapinDataObjects(pResultObject);
|
|
if (sc)
|
|
return sc;
|
|
}
|
|
|
|
// if no items were added, something is wrong
|
|
DWORD dwCount = 0;
|
|
sc = pResultObject->GetCount( &dwCount );
|
|
if (sc)
|
|
return sc;
|
|
|
|
if ( dwCount == 0 )
|
|
return sc = E_UNEXPECTED;
|
|
|
|
bContainsItems = true;
|
|
|
|
// return interface
|
|
*ppMMCDataObject = spResultInterface.Detach();
|
|
|
|
return sc;
|
|
}
|
|
|
|
|
|
/***************************************************************************\
|
|
*
|
|
* METHOD: CMMCClipBoardDataObject::ScAddDataObjectForItem
|
|
*
|
|
* PURPOSE: Adds data object for one item
|
|
*
|
|
* PARAMETERS:
|
|
* CNode* pNode [in] - node to add (or one owning the item)
|
|
* bool bScopePane [in] - if operation is on scope pane
|
|
* LPARAM lvData [in] - if result pane the LVDATA
|
|
* IComponent *pComponent [in] - snapins interface
|
|
* IDataObject *pDataObject [in] - data object to add
|
|
* bool& bContainsItems [out] - Are there any dataobjects added?
|
|
*
|
|
* RETURNS:
|
|
* SC - result code
|
|
*
|
|
\***************************************************************************/
|
|
SC CMMCClipBoardDataObject::ScAddDataObjectForItem( CNode* pNode, bool bScopePane,
|
|
LPARAM lvData, IComponent *pComponent,
|
|
IDataObject *pDataObject ,
|
|
bool& bContainsItems)
|
|
{
|
|
DECLARE_SC(sc, TEXT("CMMCClipBoardDataObject::ScAddDataObjectForScopeNode"));
|
|
|
|
// Init out param.
|
|
bContainsItems = false;
|
|
|
|
// paramter check
|
|
sc = ScCheckPointers( pNode, pComponent, pDataObject );
|
|
if (sc)
|
|
return sc;
|
|
|
|
// get the verbs
|
|
bool bCopyEnabled = false;
|
|
bool bCutEnabled = false;
|
|
sc = ScGetNodeCopyAndCutVerbs( pNode, pDataObject, bScopePane, lvData, &bCopyEnabled, &bCutEnabled);
|
|
if (sc)
|
|
return sc;
|
|
|
|
// see it the data matches our criteria
|
|
// (needs to allow something at least)
|
|
if ( ( (m_eOperation == ACTION_COPY) && (bCopyEnabled == false) )
|
|
|| ( (m_eOperation == ACTION_CUT) && (bCutEnabled == false) )
|
|
|| ( (bCutEnabled == false) && (bCopyEnabled == false) ) )
|
|
return sc = S_FALSE;
|
|
|
|
// add to the list
|
|
sc = ScAddSnapinDataObject( CNodePtrArray(1, pNode), pComponent, pDataObject, bCopyEnabled, bCutEnabled );
|
|
if (sc)
|
|
return sc;
|
|
|
|
bContainsItems = true;
|
|
|
|
return sc;
|
|
}
|
|
|
|
/***************************************************************************\
|
|
*
|
|
* METHOD: CMMCClipBoardDataObject::GetWrapperCF
|
|
*
|
|
* PURPOSE: Helper. registers and returns own clipboard format
|
|
*
|
|
* PARAMETERS:
|
|
*
|
|
* RETURNS:
|
|
* CLIPFORMAT
|
|
*
|
|
\***************************************************************************/
|
|
CLIPFORMAT CMMCClipBoardDataObject::GetWrapperCF()
|
|
{
|
|
static CLIPFORMAT s_cf = 0;
|
|
if (s_cf == 0)
|
|
s_cf = (CLIPFORMAT) RegisterClipboardFormat(_T("CCF_MMC_INTERNAL"));
|
|
|
|
return s_cf;
|
|
}
|
|
|
|
/***************************************************************************\
|
|
*
|
|
* METHOD: CMMCClipBoardDataObject::ScEnsureNotInClipboard
|
|
*
|
|
* PURPOSE: called to remove data from clipbord when comonent is destoyed
|
|
*
|
|
* PARAMETERS:
|
|
*
|
|
* RETURNS:
|
|
* SC - result code
|
|
*
|
|
\***************************************************************************/
|
|
SC CMMCClipBoardDataObject::ScInvalidate( void )
|
|
{
|
|
DECLARE_SC(sc, TEXT("CMMCClipBoardDataObject::ScEnsureNotInClipboard"));
|
|
|
|
// not valid anymore
|
|
m_bObjectValid = false;
|
|
|
|
// release data objects
|
|
for ( int i = 0; i< m_SelectionObjects.size(); i++)
|
|
m_SelectionObjects[i].spDataObject = NULL;
|
|
|
|
// check the clipboard
|
|
sc = ::OleIsCurrentClipboard( this );
|
|
if (sc)
|
|
return sc;
|
|
|
|
// it is on clipboard - remove
|
|
if (sc == S_OK)
|
|
OleSetClipboard(NULL);
|
|
|
|
return sc;
|
|
}
|
|
|
|
///////////////////////////////////////////////////////////////////////////////
|
|
///////////////////////////////////////////////////////////////////////////////
|
|
|