1063 lines
26 KiB
C++
1063 lines
26 KiB
C++
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/*
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* @doc INTERNAL
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*
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* @module ANTIEVT.C |
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*
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* Purpose:
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* implemenation of common anti-events and a caching mechanism
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*
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* Author:
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* alexgo 3/25/95
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*
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* Copyright (c) 1995-1997, Microsoft Corporation. All rights reserved.
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*/
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#include "_common.h"
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#include "_m_undo.h"
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#include "_antievt.h"
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#include "_edit.h"
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#include "_range.h"
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#include "_select.h"
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#include "_format.h"
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#include "_coleobj.h"
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#include "_objmgr.h"
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#ifdef DEBUG
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#include "_uspi.h"
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#endif
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ASSERTDATA
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//
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// CAntiEventDispenser global instance
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//
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CAntiEventDispenser gAEDispenser;
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//
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// CBaseAE PUBLIC methods
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//
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/*
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* CBaseAE::Destroy ()
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*
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* @mfunc
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* sends the Destroy notification to the next anti-event in the list
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*/
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void CBaseAE::Destroy()
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{
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TRACEBEGIN(TRCSUBSYSUNDO, TRCSCOPEINTERN, "CBaseAE::Destroy");
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;
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}
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/*
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* CBaseAE::Undo (ped, publdr)
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*
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* @mfunc
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* sends the Undo notification to the next anti-event in the list
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*
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* @rdesc HRESULT
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*/
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HRESULT CBaseAE::Undo(
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CTxtEdit *ped, //@parm the context for this undo operation
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IUndoBuilder *publdr) //@parm the undo context.
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{
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TRACEBEGIN(TRCSUBSYSUNDO, TRCSCOPEINTERN, "CBaseAE::Undo");
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return NOERROR;
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}
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/*
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* CBaseAE::OnCommit (ped)
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*
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* @mfunc called after the anti-event is added to the undo stack
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*
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* @rdesc void
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*/
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void CBaseAE::OnCommit(
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CTxtEdit *ped) //@parm the edit context
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{
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;
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}
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/*
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* CBaseAE::MergeData (dwDataType, pdata)
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*
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* @mfunc simply forwards the merge data request to the next anti-evt
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* (if one exists)
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*
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* @rdesc HRESULT. If S_FALSE, indicates that nothing could be done
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* with the merge data.
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*/
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HRESULT CBaseAE::MergeData(
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DWORD dwDataType, //@parm the type of data in <p pdata>
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void *pdata) //@parm the merge data
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{
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TRACEBEGIN(TRCSUBSYSUNDO, TRCSCOPEINTERN, "CBaseAE::MergeData");
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return S_FALSE;
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}
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/*
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* CBaseAE::SetNext
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*
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* @mfunc
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* informs this anti-event of the anti-event which should follow it
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*/
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void CBaseAE::SetNext(
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IAntiEvent *pNext) //@parm the AntiEvent to link to
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{
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TRACEBEGIN(TRCSUBSYSUNDO, TRCSCOPEINTERN, "CBaseAE::SetNext");
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_pnext = pNext;
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}
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/*
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* CBaseAE::GetNext
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*
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* @mfunc
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* retrieves the next element (if any)
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*
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* @rdesc a pointer to the next AntiEvent
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*/
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IAntiEvent *CBaseAE::GetNext()
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{
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TRACEBEGIN(TRCSUBSYSUNDO, TRCSCOPEINTERN, "CBaseAE::GetNext");
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return _pnext;
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}
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//
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// CBaseAE PROTECTED methods
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//
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/*
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* CBaseAE::CBaseAE()
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*
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* @mfunc Constructor
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*/
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CBaseAE::CBaseAE()
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{
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TRACEBEGIN(TRCSUBSYSUNDO, TRCSCOPEINTERN, "CBaseAE::CBaseAE");
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_pnext = NULL;
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}
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/*
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* CReplaceRangeAE::Destroy ()
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*
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* @mfunc
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* deletes this instance
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*/
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void CReplaceRangeAE::Destroy()
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{
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TRACEBEGIN(TRCSUBSYSUNDO, TRCSCOPEINTERN, "CReplaceRangeAE::Destroy");
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if(_paeCF)
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{
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_paeCF->Destroy();
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_paeCF = NULL;
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}
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if(_paePF)
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{
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_paePF->Destroy();
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_paePF = NULL;
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}
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CBaseAE::Destroy();
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delete this;
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}
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/*
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* CReplaceRangeAE::Undo (ped, publdr)
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*
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* @mfunc
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* undoes a CTxtPtr::ReplaceRange operation
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*
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* @comm
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* Algorithm:
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*
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* A replace range works as follows: delete n characters and in their
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* place, put m characters.
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*
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* To undo this, we delete m characters and restore the n that were
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* originally deleted. Note that we restore the n characters with
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* default formatting. If there was any other formatting to those
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* characters, a separate anti-event (CReplaceFormattingAE) will
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* apply the correct formatting.
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*/
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HRESULT CReplaceRangeAE::Undo(
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CTxtEdit *ped, //@parm Context for this undo operation
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IUndoBuilder *publdr) //@parm Undo context
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{
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TRACEBEGIN(TRCSUBSYSUNDO, TRCSCOPEINTERN, "CReplaceRangeAE::Undo");
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CRchTxtPtr rtp(ped, _cpMin);
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LONG cchMove = 0;
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rtp.ReplaceRange(_cpMax - _cpMin,
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_cchDel,
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_pchDel,
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publdr,
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-1,
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&cchMove,
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RR_NO_EOR_CHECK | RR_ITMZ_NONE); // RAID 6554
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// Passing NULL for the publdr is *extremely* important
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// below. The rich text pointer ReplaceRange call will
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// already generate the appropriate anti-events for any
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// deleted formatting, so we do not need to repeat that here.
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if(_paeCF)
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_paeCF->Undo(ped, NULL);
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if(_paePF)
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_paePF->Undo(ped, NULL);
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if (ped->IsComplexScript())
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{
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// For complex script doc, we need itemization at the end of the range undo.
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// Since the formattings were rolled back. The rtp's runptrs are no longer
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// reliable.
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if (_paeCF && rtp._rpCF.IsValid())
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rtp._rpCF.BindToCp(_cpMin + _cchDel);
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if (_paePF && rtp._rpPF.IsValid())
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rtp._rpPF.BindToCp(_cpMin + _cchDel);
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rtp.ItemizeReplaceRange(_cchDel, cchMove, NULL, FALSE);
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}
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return CBaseAE::Undo(ped, publdr);
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}
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/*
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* CReplaceRangeAE::MergeData (dwDataType, pdata)
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*
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* @mfunc gives the caller a chance to extend the current anti-event
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* if we're in merge typing mode
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*
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* @comm if the requested data can be trivially merged into this
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* anti-event, then do so; otherwise, return S_FALSE.
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*
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* There are two cases of interest: <nl>
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* 1. typing another character
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* 2. backspacing over a character in this merge
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* typing session.
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*/
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HRESULT CReplaceRangeAE::MergeData(
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DWORD dwDataType, //@parm the type of <p pdata>
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void *pdata) //@parm the merge data
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{
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TRACEBEGIN(TRCSUBSYSUNDO, TRCSCOPEINTERN, "CReplaceRangeAE::MergeData");
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if(dwDataType == MD_SIMPLE_REPLACERANGE)
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{
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SimpleReplaceRange *psr = (SimpleReplaceRange *)pdata;
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// Test for first case: just typing another character
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if(psr->cpMin == _cpMax && psr->cchDel == 0)
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{
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_cpMax = psr->cpMax;
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return NOERROR;
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}
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// Second case: deleting text stored in this antievent
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if (psr->cpMax == psr->cpMin &&
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psr->cpMin + psr->cchDel == _cpMax &&
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psr->cpMin >= _cpMin)
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{
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_cpMax = psr->cpMax;
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return NOERROR;
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}
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}
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return S_FALSE;
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}
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/*
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* CReplaceRangeAE::CReplaceRangeAE (cpMin, cpMax, cchDel, pchDel, paeCF, paePF)
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*
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* @mfunc Constructor for a text replace range anti-event
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*/
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CReplaceRangeAE::CReplaceRangeAE(
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LONG cpMin, //@parm cp starting the *final* range
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LONG cpMax, //@parm cp ending the *final* range
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LONG cchDel, //@parm # of chars deleted during ReplaceRange
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TCHAR *pchDel, //@parm deleted characters. Ownership of
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// memory is transferred to this object.
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IAntiEvent *paeCF, //@parm Anti-event for any character formatting
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// replacement
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IAntiEvent *paePF) //@parm Anti-event for any paragraph formatting
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// replacement
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{
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TRACEBEGIN(TRCSUBSYSUNDO, TRCSCOPEINTERN, "CReplaceRangeAE::CReplaceRangeAE");
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_cpMin = cpMin;
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_cpMax = cpMax;
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_cchDel = cchDel;
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_pchDel = pchDel;
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_paeCF = paeCF;
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_paePF = paePF;
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}
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/*
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* CReplaceRangeAE::~CReplaceRangeAE ()
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*
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* @mfunc Destructor
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*/
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CReplaceRangeAE::~CReplaceRangeAE()
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{
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TRACEBEGIN(TRCSUBSYSUNDO, TRCSCOPEINTERN, "CReplaceRangeAE::~CReplaceRangeAE");
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if(_pchDel)
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delete _pchDel;
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}
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/*
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* CReplaceFormattingAE
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*
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* @mfunc Destroys this instance
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*/
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void CReplaceFormattingAE::Destroy()
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{
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TRACEBEGIN(TRCSUBSYSUNDO, TRCSCOPEINTERN, "CReplaceFormattingAE::Destroy");
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CBaseAE::Destroy();
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delete this;
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}
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/*
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* CReplaceFormattingAE::Undo (ped, publdr)
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*
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* @mfunc Undoes a formatting operation
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*
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* @devnote This anti-event assumes that the text to which formatting
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* should be applied exists!!
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*/
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HRESULT CReplaceFormattingAE::Undo(
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CTxtEdit *ped, //@parm CTxtEdit closure
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IUndoBuilder *publdr) //@parm Undo builder context
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{
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TRACEBEGIN(TRCSUBSYSUNDO, TRCSCOPEINTERN, "CReplaceFormattingAE::Undo");
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LONG cchEaten;
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LONG cchTotal = 0;
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LONG delta;
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LONG i;
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LONG iRunMerge;
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IAntiEvent * pae;
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IFormatCache * pf = _fPara
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? (IFormatCache *)GetParaFormatCache()
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: (IFormatCache *)GetCharFormatCache();
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CNotifyMgr * pnm = ped->GetNotifyMgr();
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CFormatRuns ** ppfmtruns;
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CTxtStory * pStory = ped->GetTxtStory();
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const CParaFormat * pDefPF = _fPara ? pStory->GetParaFormat(-1) : NULL;
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BYTE bDefPFLevel = pDefPF && pDefPF->IsRtlPara() ? 1 : 0;
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// First set things up correctly for whether we are paragraph
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// or character formatting
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CFormatRunPtr rp(_fPara ? pStory->GetPFRuns() :pStory->GetCFRuns());
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// Count up count of characters affected
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for(i = 0 ; i < _cRuns; i++)
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cchTotal += _prgRuns[i]._cch;
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// We are going to be adding in some runs, so be sure the format
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// run array is allocated!
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if(!rp.IsValid())
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{
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ppfmtruns = _fPara ? &(pStory->_pPFRuns) : &(pStory->_pCFRuns);
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if(!rp.InitRuns(0, ped->GetTextLength(), ppfmtruns))
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return E_OUTOFMEMORY;
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// tell folks we allocated a new run
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if(pnm)
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pnm->NotifyPostReplaceRange(NULL, CP_INFINITE, 0, 0, CP_INFINITE, CP_INFINITE);
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}
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// Now do a pre-notification of the change we are about to make
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||
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// This let's objects like a delayed render data object grab
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// any data *before* we change it.
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||
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rp.BindToCp(_cp);
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// do a little more checking
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AssertNr(rp.CalcTextLength() == ped->GetTextLength());
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if(pnm)
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pnm->NotifyPreReplaceRange(NULL, CP_INFINITE, 0, 0, _cp, _cp + cchTotal);
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|
|
// We want to merge runs with where we start plus one behind.
|
||
|
|
iRunMerge = rp._iRun;
|
||
|
|
if(iRunMerge > 0)
|
||
|
|
iRunMerge--;
|
||
|
|
|
||
|
|
// if we need to be able to undo this opertion, go through and
|
||
|
|
// save existing run information
|
||
|
|
if(publdr)
|
||
|
|
{
|
||
|
|
LONG cchBackup = 0, cchAdvance = 0;
|
||
|
|
if (ped->IsBiDi())
|
||
|
|
{
|
||
|
|
// For redo'ing purpose, we expand the range to keep in the antievent
|
||
|
|
// to make sure that BiDi levels are recorded adequately.
|
||
|
|
CRchTxtPtr rtp(ped, _cp);
|
||
|
|
cchBackup = rtp.ExpandRangeFormatting(cchTotal, 0, cchAdvance);
|
||
|
|
Assert(cchBackup >= 0);
|
||
|
|
}
|
||
|
|
rp.AdvanceCp(-cchBackup);
|
||
|
|
pae = gAEDispenser.CreateReplaceFormattingAE(ped, rp, cchTotal + cchBackup + cchAdvance,
|
||
|
|
pf, _fPara);
|
||
|
|
rp.AdvanceCp(cchBackup);
|
||
|
|
|
||
|
|
if(pae)
|
||
|
|
publdr->AddAntiEvent(pae);
|
||
|
|
}
|
||
|
|
|
||
|
|
#ifdef DEBUG
|
||
|
|
CTxtPtr rtp(ped, _cp);
|
||
|
|
WCHAR ch;
|
||
|
|
#endif
|
||
|
|
|
||
|
|
// Now go through and apply the saved formatting.
|
||
|
|
for(i = 0; i < _cRuns; i++)
|
||
|
|
{
|
||
|
|
cchEaten = 0;
|
||
|
|
|
||
|
|
// Use a do-while, because we may have a zero-length
|
||
|
|
// format run. We know we need to do "something" at
|
||
|
|
// least once, because otherwise, we would not have
|
||
|
|
// bothered creating a run!
|
||
|
|
do
|
||
|
|
{
|
||
|
|
if (_fPara && _prgRuns[i]._iFormat == -1)
|
||
|
|
// (#6768) The -1 format may have changed before undoing.
|
||
|
|
_prgRuns[i]._level._value = bDefPFLevel;
|
||
|
|
|
||
|
|
delta = rp.SetFormat(_prgRuns[i]._iFormat,
|
||
|
|
_prgRuns[i]._cch - cchEaten, pf, &_prgRuns[i]._level);
|
||
|
|
if(delta == -1)
|
||
|
|
{
|
||
|
|
ped->GetCallMgr()->SetOutOfMemory();
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
cchEaten += delta;
|
||
|
|
} while(cchEaten < _prgRuns[i]._cch);
|
||
|
|
|
||
|
|
#ifdef DEBUG
|
||
|
|
if (_fPara)
|
||
|
|
{
|
||
|
|
rtp.AdvanceCp(_prgRuns[i]._cch);
|
||
|
|
ch = rtp.GetPrevChar();
|
||
|
|
if(!IsASCIIEOP(ch))
|
||
|
|
{
|
||
|
|
rtp.MoveGapToEndOfBlock(); // Make it easier to see
|
||
|
|
AssertSz(FALSE, // what's going on
|
||
|
|
"CReplaceFormattingAE::Undo: PF run doesn't end with EOP");
|
||
|
|
}
|
||
|
|
}
|
||
|
|
#endif
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
// Merge formatting runs in case there are duplicate formatting
|
||
|
|
// runs side by side
|
||
|
|
rp.NextRun();
|
||
|
|
rp.MergeRuns(iRunMerge, pf);
|
||
|
|
|
||
|
|
// Make sure the runs are still OK.
|
||
|
|
AssertNr(rp.CalcTextLength() == ped->GetTextLength());
|
||
|
|
|
||
|
|
if(pnm)
|
||
|
|
pnm->NotifyPostReplaceRange(NULL, CP_INFINITE, 0, 0, _cp, _cp + cchTotal);
|
||
|
|
|
||
|
|
ped->GetCallMgr()->SetChangeEvent(CN_GENERIC);
|
||
|
|
|
||
|
|
return CBaseAE::Undo(ped, publdr);
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
* CReplaceFormattingAE::CReplaceFormattingAE(&rpIn, cch, pf, fPara)
|
||
|
|
*
|
||
|
|
* @mfunc Constructor. During construction, we will loop through and
|
||
|
|
* find all of the formats for the given text range
|
||
|
|
*/
|
||
|
|
CReplaceFormattingAE::CReplaceFormattingAE(
|
||
|
|
CTxtEdit *ped, //@parm CTxtEdit
|
||
|
|
CFormatRunPtr &rpIn, //@parm Run pointer to start with
|
||
|
|
LONG cch, //@parm Count of characters to
|
||
|
|
// find formatting info on
|
||
|
|
IFormatCache *pf, //@parm Format cache (to AddRef/
|
||
|
|
// Release formats)
|
||
|
|
BOOL fPara) //@parm If TRUE, formatting is for paras
|
||
|
|
{
|
||
|
|
TRACEBEGIN(TRCSUBSYSUNDO, TRCSCOPEINTERN, "CReplaceFormattingAE::CReplaceFormattingAE");
|
||
|
|
|
||
|
|
LONG cchLeft;
|
||
|
|
LONG cchtemp = (LONG)cch;
|
||
|
|
LONG i;
|
||
|
|
CFormatRunPtr rp(rpIn); // We use 2 format run pointers to avoid
|
||
|
|
CFormatRunPtr rpTemp(rpIn); // backing up after counting the number of
|
||
|
|
// format runs
|
||
|
|
Assert(pf);
|
||
|
|
|
||
|
|
// TODO: pass in cp as a parameter to avoid following calculation
|
||
|
|
_cp = rpIn.CalculateCp();
|
||
|
|
_fPara = fPara;
|
||
|
|
|
||
|
|
// Count the number of formats needed. Recall that even
|
||
|
|
// if 0 characters are to be deleted, we may still be
|
||
|
|
// "deleting" a zero length format run.
|
||
|
|
_cRuns = 0;
|
||
|
|
do
|
||
|
|
{
|
||
|
|
_cRuns++;
|
||
|
|
cchLeft = rp.GetCchLeft();
|
||
|
|
cchtemp -= min(cchLeft, cchtemp);
|
||
|
|
rp.NextRun();
|
||
|
|
} while(cchtemp > 0);
|
||
|
|
|
||
|
|
_prgRuns = new CFormatRun[_cRuns];
|
||
|
|
|
||
|
|
if(!_prgRuns)
|
||
|
|
{
|
||
|
|
_cRuns = 0;
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
|
||
|
|
// Would be nice to add this but ped is not passed in
|
||
|
|
// CTxtPtr rtp(ped, _cp);
|
||
|
|
// WCHAR ch;
|
||
|
|
|
||
|
|
for(i = 0; i < _cRuns; i++)
|
||
|
|
{
|
||
|
|
_prgRuns[i]._cch = min(cch, rpTemp.GetCchLeft());
|
||
|
|
CFormatRun *pRun = rpTemp.GetRun(0);
|
||
|
|
|
||
|
|
_prgRuns[i]._iFormat = pRun->_iFormat;
|
||
|
|
|
||
|
|
_prgRuns[i]._level = pRun->_level;
|
||
|
|
pf->AddRef(_prgRuns[i]._iFormat);
|
||
|
|
rpTemp.NextRun();
|
||
|
|
cch -= _prgRuns[i]._cch;
|
||
|
|
|
||
|
|
#if 0
|
||
|
|
// Would be nice dor DEBUG but ped is not passed in
|
||
|
|
|
||
|
|
if (_fPara)
|
||
|
|
{
|
||
|
|
rtp.AdvanceCp(_prgRuns[i]._cch);
|
||
|
|
ch = rtp.GetPrevChar();
|
||
|
|
if(!IsASCIIEOP(ch))
|
||
|
|
{
|
||
|
|
rtp.MoveGapToEndOfBlock(); // Make it easier to see
|
||
|
|
AssertSz(FALSE, // what's going on
|
||
|
|
"CReplaceFormattingAE::CReplaceFormattingAE: PF run doesn't end with EOP");
|
||
|
|
}
|
||
|
|
}
|
||
|
|
#endif
|
||
|
|
}
|
||
|
|
|
||
|
|
Assert(cch == 0);
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
* CReplaceFormattingAE::~CReplaceFormattingAE ()
|
||
|
|
*
|
||
|
|
* @mfunc Destructor
|
||
|
|
*/
|
||
|
|
CReplaceFormattingAE::~CReplaceFormattingAE()
|
||
|
|
{
|
||
|
|
TRACEBEGIN(TRCSUBSYSUNDO, TRCSCOPEINTERN, "CReplaceFormattingAE::~CReplaceFormattingAE");
|
||
|
|
|
||
|
|
IFormatCache * pf = _fPara
|
||
|
|
? (IFormatCache *)GetParaFormatCache()
|
||
|
|
: (IFormatCache *)GetCharFormatCache();
|
||
|
|
if(_prgRuns)
|
||
|
|
{
|
||
|
|
if(pf)
|
||
|
|
{
|
||
|
|
for(LONG i = 0; i < _cRuns; i++)
|
||
|
|
pf->Release(_prgRuns[i]._iFormat);
|
||
|
|
}
|
||
|
|
delete _prgRuns;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
//
|
||
|
|
// CReplaceObjectAE PUBLIC methods
|
||
|
|
//
|
||
|
|
|
||
|
|
/*
|
||
|
|
* CReplaceObjectAE::Destroy()
|
||
|
|
*
|
||
|
|
* @mfunc Destroy's this object
|
||
|
|
*/
|
||
|
|
void CReplaceObjectAE::Destroy()
|
||
|
|
{
|
||
|
|
COleObject *pobj;
|
||
|
|
|
||
|
|
TRACEBEGIN(TRCSUBSYSUNDO, TRCSCOPEINTERN, "CReplaceObjectAE::Destroy");
|
||
|
|
|
||
|
|
pobj = _pobj;
|
||
|
|
_pobj = NULL;
|
||
|
|
|
||
|
|
// we only need to zombie the object if it wasn't put back into
|
||
|
|
// the document.
|
||
|
|
if(!_fUndoInvoked)
|
||
|
|
pobj->MakeZombie();
|
||
|
|
|
||
|
|
pobj->Release();
|
||
|
|
CBaseAE::Destroy();
|
||
|
|
delete this;
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
* CReplaceObjectAE::Undo (ped, publdr)
|
||
|
|
*
|
||
|
|
* @mfunc Undo'es the delete operation and restores the object
|
||
|
|
* to it's original state
|
||
|
|
*
|
||
|
|
* @rdesc HRESULT
|
||
|
|
*/
|
||
|
|
HRESULT CReplaceObjectAE::Undo(
|
||
|
|
CTxtEdit *ped, //@parm edit context
|
||
|
|
IUndoBuilder *publdr) //@parm undo/redo context
|
||
|
|
{
|
||
|
|
CObjectMgr *pobjmgr;
|
||
|
|
|
||
|
|
TRACEBEGIN(TRCSUBSYSUNDO, TRCSCOPEINTERN, "CReplaceObjectAE::Undo");
|
||
|
|
|
||
|
|
pobjmgr = ped->GetObjectMgr();
|
||
|
|
if(_pobj && pobjmgr)
|
||
|
|
{
|
||
|
|
_fUndoInvoked = TRUE;
|
||
|
|
_pobj->Restore();
|
||
|
|
pobjmgr->RestoreObject(_pobj);
|
||
|
|
}
|
||
|
|
|
||
|
|
return CBaseAE::Undo(ped, publdr);
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
* CReplaceObjectAE::OnCommit(ped)
|
||
|
|
*
|
||
|
|
* @mfunc called when the anti-event chain is committed to the
|
||
|
|
* undo stack. This gives us a chance to make 'dangerous'
|
||
|
|
* calls that could cause us to be re-entered.
|
||
|
|
*/
|
||
|
|
void CReplaceObjectAE::OnCommit(
|
||
|
|
CTxtEdit *ped) //@parm the edit context
|
||
|
|
{
|
||
|
|
TRACEBEGIN(TRCSUBSYSUNDO, TRCSCOPEINTERN, "CReplaceObjectAE::OnCommit");
|
||
|
|
_pobj->Close(OLECLOSE_SAVEIFDIRTY);
|
||
|
|
}
|
||
|
|
|
||
|
|
//
|
||
|
|
// CReplaceObjectAE PRIVATE methods
|
||
|
|
//
|
||
|
|
|
||
|
|
/*
|
||
|
|
* CReplaceObjectAE::CReplaceObjectAE (pobj)
|
||
|
|
*
|
||
|
|
* @mfunc constructor
|
||
|
|
*/
|
||
|
|
CReplaceObjectAE::CReplaceObjectAE(
|
||
|
|
COleObject *pobj) //@parm object that was deleted
|
||
|
|
{
|
||
|
|
_fUndoInvoked = FALSE;
|
||
|
|
_pobj = pobj;
|
||
|
|
_pobj->AddRef();
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
* CReplaceObjectAE::~CReplaceObjectAE
|
||
|
|
*
|
||
|
|
* @mfunc destructor
|
||
|
|
*/
|
||
|
|
CReplaceObjectAE::~CReplaceObjectAE()
|
||
|
|
{
|
||
|
|
Assert(_pobj == NULL);
|
||
|
|
}
|
||
|
|
|
||
|
|
//
|
||
|
|
// CResizeObjectAE PUBLIC methods
|
||
|
|
//
|
||
|
|
|
||
|
|
/*
|
||
|
|
* CResizeObjectAE::Destroy
|
||
|
|
*
|
||
|
|
* @mfunc Destroy's this object
|
||
|
|
*/
|
||
|
|
void CResizeObjectAE::Destroy(void)
|
||
|
|
{
|
||
|
|
TRACEBEGIN(TRCSUBSYSUNDO, TRCSCOPEINTERN, "CResizeObjectAE::Destroy");
|
||
|
|
|
||
|
|
_pobj = NULL;
|
||
|
|
CBaseAE::Destroy();
|
||
|
|
|
||
|
|
delete this;
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
* CResizeObjectAE::Undo(ped, publdr)
|
||
|
|
*
|
||
|
|
* @mfunc Undo'es the resize operation and restores the object
|
||
|
|
* to it's original size/position
|
||
|
|
*
|
||
|
|
* @rdesc HRESULT
|
||
|
|
*/
|
||
|
|
HRESULT CResizeObjectAE::Undo(
|
||
|
|
CTxtEdit *ped, //@parm edit context
|
||
|
|
IUndoBuilder *publdr) //@parm undo/redo context
|
||
|
|
{
|
||
|
|
CObjectMgr *pobjmgr;
|
||
|
|
|
||
|
|
TRACEBEGIN(TRCSUBSYSUNDO, TRCSCOPEINTERN, "CReplaceObjectAE::Undo");
|
||
|
|
|
||
|
|
pobjmgr = ped->GetObjectMgr();
|
||
|
|
|
||
|
|
if(_pobj && pobjmgr)
|
||
|
|
{
|
||
|
|
_fUndoInvoked = TRUE;
|
||
|
|
_pobj->Resize(_rcPos);
|
||
|
|
}
|
||
|
|
|
||
|
|
return CBaseAE::Undo(ped, publdr);
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
* CResizeObjectAE::OnCommit
|
||
|
|
*
|
||
|
|
* @mfunc called when the anti-event chain is committed to the
|
||
|
|
* undo stack. This gives us a chance to make 'dangerous'
|
||
|
|
* calls that could cause us to be re-entered.
|
||
|
|
*/
|
||
|
|
void CResizeObjectAE::OnCommit(
|
||
|
|
CTxtEdit *ped) //@parm the edit context
|
||
|
|
{
|
||
|
|
TRACEBEGIN(TRCSUBSYSUNDO, TRCSCOPEINTERN, "CReplaceObjectAE::OnCommit");
|
||
|
|
}
|
||
|
|
|
||
|
|
//
|
||
|
|
// CResizeObjectAE PRIVATE methods
|
||
|
|
//
|
||
|
|
|
||
|
|
/*
|
||
|
|
* CResizeObjectAE::CResizeObjectAE (pobj, rcPos)
|
||
|
|
*
|
||
|
|
* @mfunc constructor
|
||
|
|
*
|
||
|
|
* @rdesc void
|
||
|
|
*/
|
||
|
|
CResizeObjectAE::CResizeObjectAE(
|
||
|
|
COleObject *pobj, //@parm the object that was resized
|
||
|
|
RECT rcPos) //@parm the old position/size rect
|
||
|
|
{
|
||
|
|
_fUndoInvoked = FALSE;
|
||
|
|
_pobj = pobj;
|
||
|
|
_rcPos = rcPos;
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
* CResizeObjectAE::~CResizeObjectAE
|
||
|
|
*
|
||
|
|
* @mfunc destructor
|
||
|
|
*/
|
||
|
|
CResizeObjectAE::~CResizeObjectAE(void)
|
||
|
|
{
|
||
|
|
Assert(_pobj == NULL);
|
||
|
|
}
|
||
|
|
|
||
|
|
//
|
||
|
|
// CSelectionAE PUBLIC methods
|
||
|
|
//
|
||
|
|
|
||
|
|
/*
|
||
|
|
* CSelectionAE::Destroy ()
|
||
|
|
*
|
||
|
|
* @mfunc gets rid of this instance
|
||
|
|
*
|
||
|
|
* @rdesc void
|
||
|
|
*/
|
||
|
|
void CSelectionAE::Destroy()
|
||
|
|
{
|
||
|
|
TRACEBEGIN(TRCSUBSYSUNDO, TRCSCOPEINTERN, "CSelectionAE::Destroy");
|
||
|
|
|
||
|
|
CBaseAE::Destroy();
|
||
|
|
delete this;
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
* CSelectionAE::Undo (ped, publdr)
|
||
|
|
*
|
||
|
|
* @mfunc restore the selection to it's former position
|
||
|
|
*
|
||
|
|
* @rdesc NOERROR
|
||
|
|
*/
|
||
|
|
HRESULT CSelectionAE::Undo(
|
||
|
|
CTxtEdit *ped, //@parm the context for this undo operation
|
||
|
|
IUndoBuilder *publdr) //@parm the undo context
|
||
|
|
{
|
||
|
|
TRACEBEGIN(TRCSUBSYSUNDO, TRCSCOPEINTERN, "CSelectionAE::Destroy");
|
||
|
|
|
||
|
|
CTxtSelection *psel = ped->GetSel();
|
||
|
|
|
||
|
|
if(psel)
|
||
|
|
psel->SetDelayedSelectionRange(_cp, _cch);
|
||
|
|
|
||
|
|
if(publdr)
|
||
|
|
{
|
||
|
|
IAntiEvent *pae;
|
||
|
|
pae = gAEDispenser.CreateSelectionAE(ped, _cpNext, _cchNext,
|
||
|
|
_cp, _cch);
|
||
|
|
if(pae)
|
||
|
|
publdr->AddAntiEvent(pae);
|
||
|
|
}
|
||
|
|
return CBaseAE::Undo(ped, publdr);
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
* CSelectionAE::MergeData(dwDataType, pdata)
|
||
|
|
*
|
||
|
|
* @mfunc merges new selection data
|
||
|
|
*
|
||
|
|
* @rdesc S_FALSE, NOERROR
|
||
|
|
*
|
||
|
|
* @comm The mergine algorithm is fairly tricky. There are basically two
|
||
|
|
* cases of interest: group typing and drag-move.
|
||
|
|
*
|
||
|
|
* In the group typing case, the "start" of the typing becomes a
|
||
|
|
* fixed reference from which characters are added or removed (i.e.
|
||
|
|
* you type or hit the backspace key). "Undo" should return you to
|
||
|
|
* that reference point; redo, on the other hand, should return the
|
||
|
|
* selection to the last insertion point. Thus, we only update
|
||
|
|
* _xxNext for the SELAE_MERGE action.
|
||
|
|
*
|
||
|
|
* Drag-Move is somewhat different; in this case, there are really
|
||
|
|
* two actions--the "paste" on the drop, and the subsequent "cut"
|
||
|
|
* operation. Thus, we need to be able to update the selection
|
||
|
|
* anti-event during the cut (since this only happens on move; not
|
||
|
|
* copies). This is accomplished with teh FORCEREPLACE flag
|
||
|
|
* and by setting fields to -1 to be ignored.
|
||
|
|
*
|
||
|
|
*/
|
||
|
|
HRESULT CSelectionAE::MergeData(
|
||
|
|
DWORD dwDataType, //@parm the type of data in <p pdata>
|
||
|
|
void *pdata) //@parm the merge data
|
||
|
|
{
|
||
|
|
TRACEBEGIN(TRCSUBSYSUNDO, TRCSCOPEINTERN, "CSelectionAE::MergeData");
|
||
|
|
|
||
|
|
SelRange *psrg = (SelRange *)pdata;
|
||
|
|
|
||
|
|
if(dwDataType == MD_SELECTIONRANGE)
|
||
|
|
{
|
||
|
|
if(psrg->flags == SELAE_MERGE)
|
||
|
|
{
|
||
|
|
Assert(psrg->cpNext != -1);
|
||
|
|
_cpNext = psrg->cpNext;
|
||
|
|
_cchNext = psrg->cchNext;
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
// -1 is used a no-op, so we should ignore it
|
||
|
|
if(psrg->cp != -1)
|
||
|
|
{
|
||
|
|
_cp = psrg->cp;
|
||
|
|
_cch = psrg->cch;
|
||
|
|
}
|
||
|
|
if(psrg->cpNext != -1)
|
||
|
|
{
|
||
|
|
_cpNext = psrg->cpNext;
|
||
|
|
_cchNext = psrg->cchNext;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
return NOERROR;
|
||
|
|
}
|
||
|
|
return S_FALSE;
|
||
|
|
}
|
||
|
|
|
||
|
|
//
|
||
|
|
// CSelectionAE PRIVATE methods
|
||
|
|
//
|
||
|
|
|
||
|
|
/*
|
||
|
|
* CSelectionAE::CSelectionAE (cp, cch, cpNext, cchNext)
|
||
|
|
*
|
||
|
|
* @mfunc Constructor
|
||
|
|
*/
|
||
|
|
CSelectionAE::CSelectionAE(
|
||
|
|
LONG cp, //@parm the actve end cp
|
||
|
|
LONG cch, //@parm the signed extension
|
||
|
|
LONG cpNext, //@parm the cp to use for the AE of this AE
|
||
|
|
LONG cchNext) //@parm the cch for the AE of this AE
|
||
|
|
{
|
||
|
|
_cp = cp;
|
||
|
|
_cch = cch;
|
||
|
|
_cpNext = cpNext;
|
||
|
|
_cchNext = cchNext;
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
* CSelectionAE::~CSelectionAE()
|
||
|
|
*
|
||
|
|
* @mfunc desctructor
|
||
|
|
*/
|
||
|
|
CSelectionAE::~CSelectionAE()
|
||
|
|
{
|
||
|
|
;
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
* CAntiEventDispenser::CreateReplaceRangeAE(ped, cpMin, cpMax, cchDel,
|
||
|
|
* pchDel, paeCF, paePF)
|
||
|
|
* @mfunc
|
||
|
|
* creates an anti-event for a replace range operation
|
||
|
|
*/
|
||
|
|
IAntiEvent * CAntiEventDispenser::CreateReplaceRangeAE(
|
||
|
|
CTxtEdit *ped, //@parm edit context
|
||
|
|
LONG cpMin, //@parm cp starting the *final* range
|
||
|
|
LONG cpMax, //@parm cp ending the *final* range
|
||
|
|
LONG cchDel, //@parm # of chars deleted during ReplaceRange
|
||
|
|
TCHAR *pchDel, //@parm Deleted characters. Ownership of
|
||
|
|
// memory is transferred to this object.
|
||
|
|
IAntiEvent *paeCF, //@parm Anti-event for any character formatting
|
||
|
|
// replacement
|
||
|
|
IAntiEvent *paePF) //@parm Anti-event for any paragraph formatting
|
||
|
|
// replacement
|
||
|
|
{
|
||
|
|
TRACEBEGIN(TRCSUBSYSUNDO, TRCSCOPEINTERN, "CAntiEventDispenser::CreateReplaceRangeAE");
|
||
|
|
|
||
|
|
// FUTURE (alexgo): improve the efficiency of this routine!!
|
||
|
|
IAntiEvent *pae;
|
||
|
|
|
||
|
|
pae = (IAntiEvent *)(new CReplaceRangeAE(cpMin, cpMax, cchDel, pchDel,
|
||
|
|
paeCF, paePF));
|
||
|
|
|
||
|
|
if(!pae)
|
||
|
|
{
|
||
|
|
// we don't need to do anything else; the callmgr will discard
|
||
|
|
// undo for us.
|
||
|
|
ped->GetCallMgr()->SetOutOfMemory();
|
||
|
|
}
|
||
|
|
|
||
|
|
return pae;
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
* CAntiEventDispenser::CreateReplaceFormattingAE(ped, &rp, cch, pf, fPara)
|
||
|
|
*
|
||
|
|
* @mfunc Creates an anti-event for replacing formatting
|
||
|
|
*/
|
||
|
|
IAntiEvent * CAntiEventDispenser::CreateReplaceFormattingAE(
|
||
|
|
CTxtEdit *ped, //@parm Edit context
|
||
|
|
CFormatRunPtr &rp, //@parm Run pointer to start with
|
||
|
|
LONG cch, //@parm Countof characters to
|
||
|
|
// find formatting info on
|
||
|
|
IFormatCache *pf, //@parm Format cache (to AddRef/
|
||
|
|
//Release formats)
|
||
|
|
BOOL fPara) //@parm If TRUE, formatting is paragraphs
|
||
|
|
{
|
||
|
|
TRACEBEGIN(TRCSUBSYSUNDO, TRCSCOPEINTERN, "CAntiEventDispenser::CreateReplaceFormattingAE");
|
||
|
|
|
||
|
|
// FUTURE (alexgo): improve the efficiency of this routine!!!
|
||
|
|
IAntiEvent *pae;
|
||
|
|
pae = (IAntiEvent *)(new CReplaceFormattingAE(ped, rp, cch, pf, fPara));
|
||
|
|
if(!pae)
|
||
|
|
{
|
||
|
|
// We don't need to do anything else; the callmgr will discard
|
||
|
|
// undo for us.
|
||
|
|
ped->GetCallMgr()->SetOutOfMemory();
|
||
|
|
}
|
||
|
|
|
||
|
|
return pae;
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
* CAntiEventDispenser::CreateReplaceObjectAE (ped, pobj)
|
||
|
|
*
|
||
|
|
* @mfunc Creates an anti-event for replacing an object
|
||
|
|
*
|
||
|
|
* @rdesc the created anti-event
|
||
|
|
*/
|
||
|
|
IAntiEvent * CAntiEventDispenser::CreateReplaceObjectAE(
|
||
|
|
CTxtEdit *ped, //@parm the edit context.
|
||
|
|
COleObject *pobj) //@parm the object that was deleted
|
||
|
|
{
|
||
|
|
TRACEBEGIN(TRCSUBSYSUNDO, TRCSCOPEINTERN,
|
||
|
|
"CAntiEventDispenser::CreateReplaceObjectAE");
|
||
|
|
|
||
|
|
IAntiEvent *pae;
|
||
|
|
|
||
|
|
// Always allocating is probably a reasonable strategy for objects;
|
||
|
|
// they are not expected to be the bread & butter case.
|
||
|
|
pae = (IAntiEvent *)(new CReplaceObjectAE(pobj));
|
||
|
|
if(!pae)
|
||
|
|
{
|
||
|
|
// We don't need to do anything else; the callmgr will discard
|
||
|
|
// undo for us.
|
||
|
|
ped->GetCallMgr()->SetOutOfMemory();
|
||
|
|
}
|
||
|
|
|
||
|
|
return pae;
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
* CAntiEventDispenser::CreateResizeObjectAE (ped, pobj, rcPos)
|
||
|
|
*
|
||
|
|
* @mfunc Creates an anti-event for resizing an object
|
||
|
|
*
|
||
|
|
* @rdesc the created anti-event
|
||
|
|
*/
|
||
|
|
IAntiEvent * CAntiEventDispenser::CreateResizeObjectAE(
|
||
|
|
CTxtEdit *ped, //@parm the edit context.
|
||
|
|
COleObject *pobj, //@parm the object that was resized
|
||
|
|
RECT rcPos) //@parm the old object position rectangle
|
||
|
|
{
|
||
|
|
TRACEBEGIN(TRCSUBSYSUNDO, TRCSCOPEINTERN,
|
||
|
|
"CAntiEventDispenser::CreateResizeeObjectAE");
|
||
|
|
|
||
|
|
IAntiEvent *pae;
|
||
|
|
|
||
|
|
// Always allocating is probably a reasonable strategy for objects;
|
||
|
|
// they are not expected to be the bread & butter case.
|
||
|
|
|
||
|
|
pae = (IAntiEvent *)(new CResizeObjectAE(pobj, rcPos));
|
||
|
|
if(!pae)
|
||
|
|
{
|
||
|
|
// We don't need to do anything else; the callmgr will discard
|
||
|
|
// undo for us.
|
||
|
|
ped->GetCallMgr()->SetOutOfMemory();
|
||
|
|
}
|
||
|
|
return pae;
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
* CAntiEventDispenser::CreateSelectionAE (ped, cp, cch, cpNext, cchNext)
|
||
|
|
*
|
||
|
|
* @mfunc Creates an anti-event for restoring a non-degenerate selection
|
||
|
|
*
|
||
|
|
* @rdesc the created anti-event
|
||
|
|
*/
|
||
|
|
IAntiEvent * CAntiEventDispenser::CreateSelectionAE(
|
||
|
|
CTxtEdit *ped, //@parm edit context
|
||
|
|
LONG cp, //@parm the active end of the selection
|
||
|
|
LONG cch, //@parm the signed extension
|
||
|
|
LONG cpNext, //@parm the cp to use for the AE of this AE
|
||
|
|
LONG cchNext) //@parm the cch to use for the AE
|
||
|
|
{
|
||
|
|
// FUTURE (alexgo): improve the efficiency of this routine
|
||
|
|
IAntiEvent *pae;
|
||
|
|
|
||
|
|
pae = (IAntiEvent *)(new CSelectionAE(cp, cch, cpNext, cchNext));
|
||
|
|
if(!pae)
|
||
|
|
{
|
||
|
|
// We don't need to do anything else; the callmgr will discard
|
||
|
|
// undo for us.
|
||
|
|
ped->GetCallMgr()->SetOutOfMemory();
|
||
|
|
}
|
||
|
|
return pae;
|
||
|
|
}
|