// Windows Template Library - WTL version 8.0
// Copyright (C) Microsoft Corporation. All rights reserved.
//
// This file is a part of the Windows Template Library.
// The use and distribution terms for this software are covered by the
// Microsoft Permissive License (Ms-PL) which can be found in the file
// Ms-PL.txt at the root of this distribution.
#ifndef __ATLFIND_H__
#define __ATLFIND_H__
#pragma once
#ifndef __cplusplus
#error ATL requires C++ compilation (use a .cpp suffix)
#endif
#ifdef _WIN32_WCE
#error atlfind.h is not supported on Windows CE
#endif
#ifndef __ATLCTRLS_H__
#error atlfind.h requires atlctrls.h to be included first
#endif
#ifndef __ATLDLGS_H__
#error atlfind.h requires atldlgs.h to be included first
#endif
#if !((defined(__ATLMISC_H__) && defined(_WTL_USE_CSTRING)) || defined(__ATLSTR_H__))
#error atlfind.h requires CString (either from ATL's atlstr.h or WTL's atlmisc.h with _WTL_USE_CSTRING)
#endif
///////////////////////////////////////////////////////////////////////////////
// Classes in this file:
//
// CEditFindReplaceImplBase<T, TFindReplaceDialog>
// CEditFindReplaceImpl<T, TFindReplaceDialog>
// CRichEditFindReplaceImpl<T, TFindReplaceDialog>
namespace WTL
{
///////////////////////////////////////////////////////////////////////////////
// CEditFindReplaceImplBase - Base class for mixin classes that
// help implement Find/Replace for CEdit or CRichEditCtrl based window classes.
template <class T, class TFindReplaceDialog = CFindReplaceDialog>
class CEditFindReplaceImplBase
{
protected:
// Typedefs
typedef CEditFindReplaceImplBase<T, TFindReplaceDialog> thisClass;
// Data members
TFindReplaceDialog* m_pFindReplaceDialog;
_CSTRING_NS::CString m_sFindNext, m_sReplaceWith;
BOOL m_bFindOnly, m_bFirstSearch, m_bMatchCase, m_bWholeWord, m_bFindDown;
LONG m_nInitialSearchPos;
HCURSOR m_hOldCursor;
// Enumerations
enum TranslationTextItem
{
eText_OnReplaceAllMessage = 0,
eText_OnReplaceAllTitle = 1,
eText_OnTextNotFoundMessage = 2,
eText_OnTextNotFoundTitle = 3
};
public:
// Constructors
CEditFindReplaceImplBase() :
m_pFindReplaceDialog(NULL),
m_bFindOnly(TRUE),
m_bFirstSearch(TRUE),
m_bMatchCase(FALSE),
m_bWholeWord(FALSE),
m_bFindDown(TRUE),
m_nInitialSearchPos(0),
m_hOldCursor(NULL)
{
}
// Message Handlers
BEGIN_MSG_MAP(thisClass)
ALT_MSG_MAP(1)
MESSAGE_HANDLER(WM_DESTROY, OnDestroy)
MESSAGE_HANDLER(TFindReplaceDialog::GetFindReplaceMsg(), OnFindReplaceCmd)
COMMAND_ID_HANDLER(ID_EDIT_FIND, OnEditFind)
COMMAND_ID_HANDLER(ID_EDIT_REPEAT, OnEditRepeat)
COMMAND_ID_HANDLER(ID_EDIT_REPLACE, OnEditReplace)
END_MSG_MAP()
LRESULT OnDestroy(UINT /*uMsg*/, WPARAM /*wParam*/, LPARAM /*lParam*/, BOOL& bHandled)
{
if(m_pFindReplaceDialog != NULL)
{
m_pFindReplaceDialog->SendMessage(WM_CLOSE);
ATLASSERT(m_pFindReplaceDialog == NULL);
}
bHandled = FALSE;
return 0;
}
LRESULT OnFindReplaceCmd(UINT /*uMsg*/, WPARAM /*wParam*/, LPARAM lParam, BOOL& /*bHandled*/)
{
T* pT = static_cast<T*>(this);
TFindReplaceDialog* pDialog = TFindReplaceDialog::GetNotifier(lParam);
if(pDialog == NULL)
{
ATLASSERT(FALSE);
::MessageBeep(MB_ICONERROR);
return 1;
}
ATLASSERT(pDialog == m_pFindReplaceDialog);
LPFINDREPLACE findReplace = (LPFINDREPLACE)lParam;
if((m_pFindReplaceDialog != NULL) && (findReplace != NULL))
{
if(pDialog->FindNext())
{
pT->OnFindNext(pDialog->GetFindString(), pDialog->SearchDown(),
pDialog->MatchCase(), pDialog->MatchWholeWord());
}
else if(pDialog->ReplaceCurrent())
{
pT->OnReplaceSel(pDialog->GetFindString(),
pDialog->SearchDown(), pDialog->MatchCase(), pDialog->MatchWholeWord(),
pDialog->GetReplaceString());
}
else if(pDialog->ReplaceAll())
{
pT->OnReplaceAll(pDialog->GetFindString(), pDialog->GetReplaceString(),
pDialog->MatchCase(), pDialog->MatchWholeWord());
}
else if(pDialog->IsTerminating())
{
// Dialog is going away (but hasn't gone away yet)
// OnFinalMessage will "delete this"
pT->OnTerminatingFindReplaceDialog(m_pFindReplaceDialog);
m_pFindReplaceDialog = NULL;
}
}
return 0;
}
LRESULT OnEditFind(WORD /*wNotifyCode*/, WORD /*wID*/, HWND /*hWndCtl*/, BOOL& /*bHandled*/)
{
T* pT = static_cast<T*>(this);
pT->FindReplace(TRUE);
return 0;
}
LRESULT OnEditRepeat(WORD /*wNotifyCode*/, WORD /*wID*/, HWND /*hWndCtl*/, BOOL& /*bHandled*/)
{
T* pT = static_cast<T*>(this);
// If the user is holding down SHIFT when hitting F3, we'll
// search in reverse. Otherwise, we'll search forward.
// (be sure to have an accelerator mapped to ID_EDIT_REPEAT
// for both F3 and Shift+F3)
m_bFindDown = !((::GetKeyState(VK_SHIFT) & 0x8000) == 0x8000);
if(m_sFindNext.IsEmpty())
{
pT->FindReplace(TRUE);
}
else
{
if(!pT->FindTextSimple(m_sFindNext, m_bMatchCase, m_bWholeWord, m_bFindDown))
pT->TextNotFound(m_sFindNext);
}
return 0;
}
LRESULT OnEditReplace(WORD /*wNotifyCode*/, WORD /*wID*/, HWND /*hWndCtl*/, BOOL& bHandled)
{
T* pT = static_cast<T*>(this);
DWORD style = pT->GetStyle();
if((style & ES_READONLY) != ES_READONLY)
{
pT->FindReplace(FALSE);
}
else
{
// Don't allow replace when the edit control is read only
bHandled = FALSE;
}
return 0;
}
// Operations (overrideable)
TFindReplaceDialog* CreateFindReplaceDialog(BOOL bFindOnly, // TRUE for Find, FALSE for FindReplace
LPCTSTR lpszFindWhat,
LPCTSTR lpszReplaceWith = NULL,
DWORD dwFlags = FR_DOWN,
HWND hWndParent = NULL)
{
// You can override all of this in a derived class
TFindReplaceDialog* findReplaceDialog = new TFindReplaceDialog();
if(findReplaceDialog == NULL)
{
::MessageBeep(MB_ICONHAND);
}
else
{
HWND hWndFindReplace = findReplaceDialog->Create(bFindOnly,
lpszFindWhat, lpszReplaceWith, dwFlags, hWndParent);
if(hWndFindReplace == NULL)
{
delete findReplaceDialog;
findReplaceDialog = NULL;
}
else
{
findReplaceDialog->SetActiveWindow();
findReplaceDialog->ShowWindow(SW_SHOW);
}
}
return findReplaceDialog;
}
void AdjustDialogPosition(HWND hWndDialog)
{
ATLASSERT((hWndDialog != NULL) && ::IsWindow(hWndDialog));
T* pT = static_cast<T*>(this);
LONG nStartChar = 0, nEndChar = 0;
// Send EM_GETSEL so we can use both Edit and RichEdit
// (CEdit::GetSel uses int&, and CRichEditCtrlT::GetSel uses LONG&)
::SendMessage(pT->m_hWnd, EM_GETSEL, (WPARAM)&nStartChar, (LPARAM)&nEndChar);
POINT point = pT->PosFromChar(nStartChar);
::ClientToScreen(pT->GetParent(), &point);
CRect rect;
::GetWindowRect(hWndDialog, &rect);
if(rect.PtInRect(point))
{
if(point.y > rect.Height())
{
rect.OffsetRect(0, point.y - rect.bottom - 20);
}
else
{
int nVertExt = GetSystemMetrics(SM_CYSCREEN);
if(point.y + rect.Height() < nVertExt)
rect.OffsetRect(0, 40 + point.y - rect.top);
}
::MoveWindow(hWndDialog, rect.left, rect.top, rect.Width(), rect.Height(), TRUE);
}
}
DWORD GetFindReplaceDialogFlags(void) const
{
DWORD dwFlags = 0;
if(m_bFindDown)
dwFlags |= FR_DOWN;
if(m_bMatchCase)
dwFlags |= FR_MATCHCASE;
if(m_bWholeWord)
dwFlags |= FR_WHOLEWORD;
return dwFlags;
}
void FindReplace(BOOL bFindOnly)
{
T* pT = static_cast<T*>(this);
m_bFirstSearch = TRUE;
if(m_pFindReplaceDialog != NULL)
{
if(m_bFindOnly == bFindOnly)
{
m_pFindReplaceDialog->SetActiveWindow();
m_pFindReplaceDialog->ShowWindow(SW_SHOW);
return;
}
else
{
m_pFindReplaceDialog->SendMessage(WM_CLOSE);
ATLASSERT(m_pFindReplaceDialog == NULL);
}
}
ATLASSERT(m_pFindReplaceDialog == NULL);
_CSTRING_NS::CString findNext;
pT->GetSelText(findNext);
// if selection is empty or spans multiple lines use old find text
if(findNext.IsEmpty() || (findNext.FindOneOf(_T("\n\r")) != -1))
findNext = m_sFindNext;
_CSTRING_NS::CString replaceWith = m_sReplaceWith;
DWORD dwFlags = pT->GetFindReplaceDialogFlags();
m_pFindReplaceDialog = pT->CreateFindReplaceDialog(bFindOnly,
findNext, replaceWith, dwFlags, pT->operator HWND());
ATLASSERT(m_pFindReplaceDialog != NULL);
if(m_pFindReplaceDialog != NULL)
m_bFindOnly = bFindOnly;
}
BOOL SameAsSelected(LPCTSTR lpszCompare, BOOL bMatchCase, BOOL /*bWholeWord*/)
{
T* pT = static_cast<T*>(this);
// check length first
size_t nLen = lstrlen(lpszCompare);
LONG nStartChar = 0, nEndChar = 0;
// Send EM_GETSEL so we can use both Edit and RichEdit
// (CEdit::GetSel uses int&, and CRichEditCtrlT::GetSel uses LONG&)
::SendMessage(pT->m_hWnd, EM_GETSEL, (WPARAM)&nStartChar, (LPARAM)&nEndChar);
if(nLen != (size_t)(nEndChar - nStartChar))
return FALSE;
// length is the same, check contents
_CSTRING_NS::CString selectedText;
pT->GetSelText(selectedText);
return (bMatchCase && selectedText.Compare(lpszCompare) == 0) ||
(!bMatchCase && selectedText.CompareNoCase(lpszCompare) == 0);
}
void TextNotFound(LPCTSTR lpszFind)
{
T* pT = static_cast<T*>(this);
m_bFirstSearch = TRUE;
pT->OnTextNotFound(lpszFind);
}
_CSTRING_NS::CString GetTranslationText(enum TranslationTextItem eItem) const
{
_CSTRING_NS::CString text;
switch(eItem)
{
case eText_OnReplaceAllMessage:
text = _T("Replaced %d occurances of \"%s\" with \"%s\"");
break;
case eText_OnReplaceAllTitle:
text = _T("Replace All");
break;
case eText_OnTextNotFoundMessage:
text = _T("Unable to find the text \"%s\"");
break;
case eText_OnTextNotFoundTitle:
text = _T("Text not found");
break;
}
return text;
}
// Overrideable Handlers
void OnFindNext(LPCTSTR lpszFind, BOOL bFindDown, BOOL bMatchCase, BOOL bWholeWord)
{
T* pT = static_cast<T*>(this);
m_sFindNext = lpszFind;
m_bMatchCase = bMatchCase;
m_bWholeWord = bWholeWord;
m_bFindDown = bFindDown;
if(!pT->FindTextSimple(m_sFindNext, m_bMatchCase, m_bWholeWord, m_bFindDown))
pT->TextNotFound(m_sFindNext);
else
pT->AdjustDialogPosition(m_pFindReplaceDialog->operator HWND());
}
void OnReplaceSel(LPCTSTR lpszFind, BOOL bFindDown, BOOL bMatchCase, BOOL bWholeWord, LPCTSTR lpszReplace)
{
T* pT = static_cast<T*>(this);
m_sFindNext = lpszFind;
m_sReplaceWith = lpszReplace;
m_bMatchCase = bMatchCase;
m_bWholeWord = bWholeWord;
m_bFindDown = bFindDown;
if(pT->SameAsSelected(m_sFindNext, m_bMatchCase, m_bWholeWord))
pT->ReplaceSel(m_sReplaceWith);
if(!pT->FindTextSimple(m_sFindNext, m_bMatchCase, m_bWholeWord, m_bFindDown))
pT->TextNotFound(m_sFindNext);
else
pT->AdjustDialogPosition(m_pFindReplaceDialog->operator HWND());
}
void OnReplaceAll(LPCTSTR lpszFind, LPCTSTR lpszReplace, BOOL bMatchCase, BOOL bWholeWord)
{
T* pT = static_cast<T*>(this);
m_sFindNext = lpszFind;
m_sReplaceWith = lpszReplace;
m_bMatchCase = bMatchCase;
m_bWholeWord = bWholeWord;
m_bFindDown = TRUE;
// no selection or different than what looking for
if(!pT->SameAsSelected(m_sFindNext, m_bMatchCase, m_bWholeWord))
{
if(!pT->FindTextSimple(m_sFindNext, m_bMatchCase, m_bWholeWord, m_bFindDown))
{
pT->TextNotFound(m_sFindNext);
return;
}
}
pT->OnReplaceAllCoreBegin();
int replaceCount=0;
do
{
++replaceCount;
pT->ReplaceSel(m_sReplaceWith);
} while(pT->FindTextSimple(m_sFindNext, m_bMatchCase, m_bWholeWord, m_bFindDown));
pT->OnReplaceAllCoreEnd(replaceCount);
}
void OnReplaceAllCoreBegin()
{
T* pT = static_cast<T*>(this);
m_hOldCursor = ::SetCursor(::LoadCursor(NULL, IDC_WAIT));
pT->HideSelection(TRUE, FALSE);
}
void OnReplaceAllCoreEnd(int replaceCount)
{
T* pT = static_cast<T*>(this);
pT->HideSelection(FALSE, FALSE);
::SetCursor(m_hOldCursor);
_CSTRING_NS::CString message = pT->GetTranslationText(eText_OnReplaceAllMessage);
if(message.GetLength() > 0)
{
_CSTRING_NS::CString formattedMessage;
formattedMessage.Format(message,
replaceCount, m_sFindNext, m_sReplaceWith);
if(m_pFindReplaceDialog != NULL)
{
m_pFindReplaceDialog->MessageBox(formattedMessage,
pT->GetTranslationText(eText_OnReplaceAllTitle),
MB_OK | MB_ICONINFORMATION | MB_APPLMODAL);
}
else
{
pT->MessageBox(formattedMessage,
pT->GetTranslationText(eText_OnReplaceAllTitle),
MB_OK | MB_ICONINFORMATION | MB_APPLMODAL);
}
}
}
void OnTextNotFound(LPCTSTR lpszFind)
{
T* pT = static_cast<T*>(this);
_CSTRING_NS::CString message = pT->GetTranslationText(eText_OnTextNotFoundMessage);
if(message.GetLength() > 0)
{
_CSTRING_NS::CString formattedMessage;
formattedMessage.Format(message, lpszFind);
if(m_pFindReplaceDialog != NULL)
{
m_pFindReplaceDialog->MessageBox(formattedMessage,
pT->GetTranslationText(eText_OnTextNotFoundTitle),
MB_OK | MB_ICONINFORMATION | MB_APPLMODAL);
}
else
{
pT->MessageBox(formattedMessage,
pT->GetTranslationText(eText_OnTextNotFoundTitle),
MB_OK | MB_ICONINFORMATION | MB_APPLMODAL);
}
}
else
{
::MessageBeep(MB_ICONHAND);
}
}
void OnTerminatingFindReplaceDialog(TFindReplaceDialog*& /*findReplaceDialog*/)
{
}
};
///////////////////////////////////////////////////////////////////////////////
// CEditFindReplaceImpl - Mixin class for implementing Find/Replace for CEdit
// based window classes.
// Chain to CEditFindReplaceImpl message map. Your class must also derive from CEdit.
// Example:
// class CMyEdit : public CWindowImpl<CMyEdit, CEdit>,
// public CEditFindReplaceImpl<CMyEdit>
// {
// public:
// BEGIN_MSG_MAP(CMyEdit)
// // your handlers...
// CHAIN_MSG_MAP_ALT(CEditFindReplaceImpl<CMyEdit>, 1)
// END_MSG_MAP()
// // other stuff...
// };
template <class T, class TFindReplaceDialog = CFindReplaceDialog>
class CEditFindReplaceImpl : public CEditFindReplaceImplBase<T, TFindReplaceDialog>
{
protected:
typedef CEditFindReplaceImpl<T, TFindReplaceDialog> thisClass;
typedef CEditFindReplaceImplBase<T, TFindReplaceDialog> baseClass;
// Data members
LPTSTR m_pShadowBuffer; // Special shadow buffer only used in some cases.
UINT m_nShadowSize;
int m_bShadowBufferNeeded; // TRUE, FALSE, < 0 => Need to check
public:
// Constructors
CEditFindReplaceImpl() :
m_pShadowBuffer(NULL),
m_nShadowSize(0),
m_bShadowBufferNeeded(-1)
{
}
virtual ~CEditFindReplaceImpl()
{
if(m_pShadowBuffer != NULL)
{
delete [] m_pShadowBuffer;
m_pShadowBuffer = NULL;
}
}
// Message Handlers
BEGIN_MSG_MAP(thisClass)
ALT_MSG_MAP(1)
CHAIN_MSG_MAP_ALT(baseClass, 1)
END_MSG_MAP()
// Operations
// Supported only for RichEdit, so this does nothing for Edit
void HideSelection(BOOL /*bHide*/ = TRUE, BOOL /*bChangeStyle*/ = FALSE)
{
}
// Operations (overrideable)
BOOL FindTextSimple(LPCTSTR lpszFind, BOOL bMatchCase, BOOL bWholeWord, BOOL bFindDown = TRUE)
{
T* pT = static_cast<T*>(this);
ATLASSERT(lpszFind != NULL);
ATLASSERT(*lpszFind != _T('\0'));
UINT nLen = pT->GetBufferLength();
int nStartChar = 0, nEndChar = 0;
pT->GetSel(nStartChar, nEndChar);
UINT nStart = nStartChar;
int iDir = bFindDown ? +1 : -1;
// can't find a match before the first character
if(nStart == 0 && iDir < 0)
return FALSE;
LPCTSTR lpszText = pT->LockBuffer();
bool isDBCS = false;
#ifdef _MBCS
CPINFO info = { 0 };
::GetCPInfo(::GetOEMCP(), &info);
isDBCS = (info.MaxCharSize > 1);
#endif
if(iDir < 0)
{
// always go back one for search backwards
nStart -= int((lpszText + nStart) - ::CharPrev(lpszText, lpszText + nStart));
}
else if(nStartChar != nEndChar && pT->SameAsSelected(lpszFind, bMatchCase, bWholeWord))
{
// easy to go backward/forward with SBCS
#ifndef _UNICODE
if(::IsDBCSLeadByte(lpszText[nStart]))
nStart++;
#endif
nStart += iDir;
}
// handle search with nStart past end of buffer
UINT nLenFind = ::lstrlen(lpszFind);
if(nStart + nLenFind - 1 >= nLen)
{
if(iDir < 0 && nLen >= nLenFind)
{
if(isDBCS)
{
// walk back to previous character n times
nStart = nLen;
int n = nLenFind;
while(n--)
{
nStart -= int((lpszText + nStart) - ::CharPrev(lpszText, lpszText + nStart));
}
}
else
{
// single-byte character set is easy and fast
nStart = nLen - nLenFind;
}
ATLASSERT(nStart + nLenFind - 1 <= nLen);
}
else
{
pT->UnlockBuffer();
return FALSE;
}
}
// start the search at nStart
LPCTSTR lpsz = lpszText + nStart;
typedef int (WINAPI* CompareProc)(LPCTSTR str1, LPCTSTR str2);
CompareProc pfnCompare = bMatchCase ? lstrcmp : lstrcmpi;
if(isDBCS)
{
// double-byte string search
LPCTSTR lpszStop = NULL;
if(iDir > 0)
{
// start at current and find _first_ occurrance
lpszStop = lpszText + nLen - nLenFind + 1;
}
else
{
// start at top and find _last_ occurrance
lpszStop = lpsz;
lpsz = lpszText;
}
LPCTSTR lpszFound = NULL;
while(lpsz <= lpszStop)
{
#ifndef _UNICODE
if(!bMatchCase || (*lpsz == *lpszFind && (!::IsDBCSLeadByte(*lpsz) || lpsz[1] == lpszFind[1])))
#else
if(!bMatchCase || (*lpsz == *lpszFind && lpsz[1] == lpszFind[1]))
#endif
{
LPTSTR lpch = (LPTSTR)(lpsz + nLenFind);
TCHAR chSave = *lpch;
*lpch = _T('\0');
int nResult = (*pfnCompare)(lpsz, lpszFind);
*lpch = chSave;
if(nResult == 0)
{
lpszFound = lpsz;
if(iDir > 0)
break;
}
}
lpsz = ::CharNext(lpsz);
}
pT->UnlockBuffer();
if(lpszFound != NULL)
{
int n = (int)(lpszFound - lpszText);
pT->SetSel(n, n + nLenFind);
return TRUE;
}
}
else
{
// single-byte string search
UINT nCompare;
if(iDir < 0)
nCompare = (UINT)(lpsz - lpszText) + 1;
else
nCompare = nLen - (UINT)(lpsz - lpszText) - nLenFind + 1;
while(nCompare > 0)
{
ATLASSERT(lpsz >= lpszText);
ATLASSERT(lpsz + nLenFind - 1 <= lpszText + nLen - 1);
LPSTR lpch = (LPSTR)(lpsz + nLenFind);
char chSave = *lpch;
*lpch = '\0';
int nResult = (*pfnCompare)(lpsz, lpszFind);
*lpch = chSave;
if(nResult == 0)
{
pT->UnlockBuffer();
int n = (int)(lpsz - lpszText);
pT->SetSel(n, n + nLenFind);
return TRUE;
}
// restore character at end of search
*lpch = chSave;
// move on to next substring
nCompare--;
lpsz += iDir;
}
pT->UnlockBuffer();
}
return FALSE;
}
LPCTSTR LockBuffer() const
{
const T* pT = static_cast<const T*>(this);
ATLASSERT(pT->m_hWnd != NULL);
BOOL useShadowBuffer = pT->UseShadowBuffer();
if(useShadowBuffer)
{
if(m_pShadowBuffer == NULL || pT->GetModify())
{
ATLASSERT(m_pShadowBuffer != NULL || m_nShadowSize == 0);
UINT nSize = pT->GetWindowTextLength() + 1;
if(nSize > m_nShadowSize)
{
// need more room for shadow buffer
T* pThisNoConst = const_cast<T*>(pT);
delete[] m_pShadowBuffer;
pThisNoConst->m_pShadowBuffer = NULL;
pThisNoConst->m_nShadowSize = 0;
pThisNoConst->m_pShadowBuffer = new TCHAR[nSize];
pThisNoConst->m_nShadowSize = nSize;
}
// update the shadow buffer with GetWindowText
ATLASSERT(m_nShadowSize >= nSize);
ATLASSERT(m_pShadowBuffer != NULL);
pT->GetWindowText(m_pShadowBuffer, nSize);
}
return m_pShadowBuffer;
}
HLOCAL hLocal = pT->GetHandle();
ATLASSERT(hLocal != NULL);
LPCTSTR lpszText = (LPCTSTR)::LocalLock(hLocal);
ATLASSERT(lpszText != NULL);
return lpszText;
}
void UnlockBuffer() const
{
const T* pT = static_cast<const T*>(this);
ATLASSERT(pT->m_hWnd != NULL);
BOOL useShadowBuffer = pT->UseShadowBuffer();
if(!useShadowBuffer)
{
HLOCAL hLocal = pT->GetHandle();
ATLASSERT(hLocal != NULL);
::LocalUnlock(hLocal);
}
}
UINT GetBufferLength() const
{
const T* pT = static_cast<const T*>(this);
ATLASSERT(pT->m_hWnd != NULL);
UINT nLen = 0;
LPCTSTR lpszText = pT->LockBuffer();
if(lpszText != NULL)
nLen = ::lstrlen(lpszText);
pT->UnlockBuffer();
return nLen;
}
LONG EndOfLine(LPCTSTR lpszText, UINT nLen, UINT nIndex) const
{
LPCTSTR lpsz = lpszText + nIndex;
LPCTSTR lpszStop = lpszText + nLen;
while(lpsz < lpszStop && *lpsz != _T('\r'))
++lpsz;
return LONG(lpsz - lpszText);
}
LONG GetSelText(_CSTRING_NS::CString& strText) const
{
const T* pT = static_cast<const T*>(this);
int nStartChar = 0, nEndChar = 0;
pT->GetSel(nStartChar, nEndChar);
ATLASSERT((UINT)nEndChar <= pT->GetBufferLength());
LPCTSTR lpszText = pT->LockBuffer();
LONG nLen = pT->EndOfLine(lpszText, nEndChar, nStartChar) - nStartChar;
SecureHelper::memcpy_x(strText.GetBuffer(nLen), nLen * sizeof(TCHAR), lpszText + nStartChar, nLen * sizeof(TCHAR));
strText.ReleaseBuffer(nLen);
pT->UnlockBuffer();
return nLen;
}
BOOL UseShadowBuffer(void) const
{
const T* pT = static_cast<const T*>(this);
if(pT->m_bShadowBufferNeeded < 0)
{
T* pThisNoConst = const_cast<T*>(pT);
OSVERSIONINFO ovi = { 0 };
ovi.dwOSVersionInfoSize = sizeof(OSVERSIONINFO);
::GetVersionEx(&ovi);
bool bWin9x = (ovi.dwPlatformId == VER_PLATFORM_WIN32_WINDOWS);
if(bWin9x)
{
// Windows 95, 98, ME
// Under Win9x, it is necessary to maintain a shadow buffer.
// It is only updated when the control contents have been changed.
pThisNoConst->m_bShadowBufferNeeded = TRUE;
}
else
{
// Windows NT, 2000, XP, etc.
pThisNoConst->m_bShadowBufferNeeded = FALSE;
#ifndef _UNICODE
// On Windows XP (or later), if common controls version 6 is in use
// (such as via theming), then EM_GETHANDLE will always return a UNICODE string.
// If theming is enabled and Common Controls version 6 is in use,
// you're really not suppose to superclass or subclass common controls
// with an ANSI windows procedure (so its best to only theme if you use UNICODE).
// Using a shadow buffer uses GetWindowText instead, so it solves
// this problem for us (although it makes it a little less efficient).
if((ovi.dwMajorVersion == 5 && ovi.dwMinorVersion >= 1) || (ovi.dwMajorVersion > 5))
{
// We use DLLVERSIONINFO_private so we don't have to depend on shlwapi.h
typedef struct _DLLVERSIONINFO_private
{
DWORD cbSize;
DWORD dwMajorVersion;
DWORD dwMinorVersion;
DWORD dwBuildNumber;
DWORD dwPlatformID;
} DLLVERSIONINFO_private;
HMODULE hModule = ::LoadLibrary("comctl32.dll");
if(hModule != NULL)
{
typedef HRESULT (CALLBACK *LPFN_DllGetVersion)(DLLVERSIONINFO_private *);
LPFN_DllGetVersion fnDllGetVersion = (LPFN_DllGetVersion)::GetProcAddress(hModule, "DllGetVersion");
if(fnDllGetVersion != NULL)
{
DLLVERSIONINFO_private version = { 0 };
version.cbSize = sizeof(DLLVERSIONINFO_private);
if(SUCCEEDED(fnDllGetVersion(&version)))
{
if(version.dwMajorVersion >= 6)
{
pThisNoConst->m_bShadowBufferNeeded = TRUE;
ATLTRACE2(atlTraceUI, 0, _T("Warning: You have compiled for MBCS/ANSI but are using common controls version 6 or later (likely through a manifest file).\r\n"));
ATLTRACE2(atlTraceUI, 0, _T("If you use common controls version 6 or later, you should only do so for UNICODE builds.\r\n"));
}
}
}
::FreeLibrary(hModule);
hModule = NULL;
}
}
#endif // !_UNICODE
}
}
return (pT->m_bShadowBufferNeeded == TRUE);
}
};
///////////////////////////////////////////////////////////////////////////////
// CRichEditFindReplaceImpl - Mixin class for implementing Find/Replace for CRichEditCtrl
// based window classes.
// Chain to CRichEditFindReplaceImpl message map. Your class must also derive from CRichEditCtrl.
// Example:
// class CMyRichEdit : public CWindowImpl<CMyRichEdit, CRichEditCtrl>,
// public CRichEditFindReplaceImpl<CMyRichEdit>
// {
// public:
// BEGIN_MSG_MAP(CMyRichEdit)
// // your handlers...
// CHAIN_MSG_MAP_ALT(CRichEditFindReplaceImpl<CMyRichEdit>, 1)
// END_MSG_MAP()
// // other stuff...
// };
template <class T, class TFindReplaceDialog = CFindReplaceDialog>
class CRichEditFindReplaceImpl : public CEditFindReplaceImplBase<T, TFindReplaceDialog>
{
protected:
typedef CRichEditFindReplaceImpl<T, TFindReplaceDialog> thisClass;
typedef CEditFindReplaceImplBase<T, TFindReplaceDialog> baseClass;
public:
BEGIN_MSG_MAP(thisClass)
ALT_MSG_MAP(1)
CHAIN_MSG_MAP_ALT(baseClass, 1)
END_MSG_MAP()
// Operations (overrideable)
BOOL FindTextSimple(LPCTSTR lpszFind, BOOL bMatchCase, BOOL bWholeWord, BOOL bFindDown = TRUE)
{
T* pT = static_cast<T*>(this);
ATLASSERT(lpszFind != NULL);
FINDTEXTEX ft = { 0 };
pT->GetSel(ft.chrg);
if(m_bFirstSearch)
{
if(bFindDown)
m_nInitialSearchPos = ft.chrg.cpMin;
else
m_nInitialSearchPos = ft.chrg.cpMax;
m_bFirstSearch = FALSE;
}
#if (_RICHEDIT_VER >= 0x0200)
ft.lpstrText = (LPTSTR)lpszFind;
#else // !(_RICHEDIT_VER >= 0x0200)
USES_CONVERSION;
ft.lpstrText = T2A((LPTSTR)lpszFind);
#endif // !(_RICHEDIT_VER >= 0x0200)
if(ft.chrg.cpMin != ft.chrg.cpMax) // i.e. there is a selection
{
if(bFindDown)
{
ft.chrg.cpMin++;
}
else
{
// won't wraparound backwards
ft.chrg.cpMin = __max(ft.chrg.cpMin, 0);
}
}
DWORD dwFlags = bMatchCase ? FR_MATCHCASE : 0;
dwFlags |= bWholeWord ? FR_WHOLEWORD : 0;
ft.chrg.cpMax = pT->GetTextLength() + m_nInitialSearchPos;
if(bFindDown)
{
if(m_nInitialSearchPos >= 0)
ft.chrg.cpMax = pT->GetTextLength();
dwFlags |= FR_DOWN;
ATLASSERT(ft.chrg.cpMax >= ft.chrg.cpMin);
}
else
{
if(m_nInitialSearchPos >= 0)
ft.chrg.cpMax = 0;
dwFlags &= ~FR_DOWN;
ATLASSERT(ft.chrg.cpMax <= ft.chrg.cpMin);
}
BOOL bRet = FALSE;
if(pT->FindAndSelect(dwFlags, ft) != -1)
{
bRet = TRUE; // we found the text
}
else if(m_nInitialSearchPos > 0)
{
// if the original starting point was not the beginning
// of the buffer and we haven't already been here
if(bFindDown)
{
ft.chrg.cpMin = 0;
ft.chrg.cpMax = m_nInitialSearchPos;
}
else
{
ft.chrg.cpMin = pT->GetTextLength();
ft.chrg.cpMax = m_nInitialSearchPos;
}
m_nInitialSearchPos = m_nInitialSearchPos - pT->GetTextLength();
bRet = (pT->FindAndSelect(dwFlags, ft) != -1) ? TRUE : FALSE;
}
return bRet;
}
long FindAndSelect(DWORD dwFlags, FINDTEXTEX& ft)
{
T* pT = static_cast<T*>(this);
LONG index = pT->FindText(dwFlags, ft);
if(index != -1) // i.e. we found something
pT->SetSel(ft.chrgText);
return index;
}
};
}; // namespace WTL
#endif // __ATLFIND_H__