cfindtextdlg.cpp

一个完整的编辑器的代码（很值得参考

////////////////////////////////////////////////////////////////////////////
//  File:       cfindtextdlg.cpp
//  Version:    1.0.0.0
//  Created:    29-Dec-1998
//
//  Author:     Stcherbatchenko Andrei
//  E-mail:     [e-mail]
//
//  Implementation of the CFindTextDlg dialog, a part of Crystal Edit -
//  syntax coloring text editor.
//
//  You are free to use or modify this code to the following restrictions:
//  - Acknowledge me somewhere in your about box, simple "Parts of code by.."
//  will be enough. If you can't (or don't want to), contact me personally.
//  - LEAVE THIS HEADER INTACT
////////////////////////////////////////////////////////////////////////////

////////////////////////////////////////////////////////////////////////////
//  19-Jul-99
//      Ferdinand Prantl:
//  +   FEATURE: regular expressions, go to line and things ...
//  +   FEATURE: some other things I've forgotten ...
//
//  ... it's being edited very rapidly so sorry for non-commented
//        and maybe "ugly" code ...
////////////////////////////////////////////////////////////////////////////

#include "stdafx.h"
#include "cfindtextdlg.h"
#include "ccrystaltextview.h"

#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif

/////////////////////////////////////////////////////////////////////////////
// CFindTextDlg dialog

CFindTextDlg::CFindTextDlg (CCrystalTextView * pBuddy):CDialog (CFindTextDlg::IDD, NULL)
{
  m_pBuddy = pBuddy;
  //{{AFX_DATA_INIT(CFindTextDlg)
  m_nDirection = 1;
  m_bMatchCase = FALSE;
  m_bWholeWord = FALSE;
  m_bRegExp = FALSE;
  m_sText = _T ("");
  //}}AFX_DATA_INIT
  m_ptCurrentPos = CPoint (0, 0);
}

void CFindTextDlg::
DoDataExchange (CDataExchange * pDX)
{
  CDialog::DoDataExchange (pDX);
  //{{AFX_DATA_MAP(CFindTextDlg)
  DDX_Control (pDX, IDC_EDIT_TEXT, m_ctlFindText);
  DDX_Control (pDX, IDC_EDIT_WHOLE_WORD, m_ctlWholeWord);
  DDX_Radio (pDX, IDC_EDIT_DIRECTION_UP, m_nDirection);
  DDX_Check (pDX, IDC_EDIT_MATCH_CASE, m_bMatchCase);
  DDX_CBString (pDX, IDC_EDIT_TEXT, m_sText);
  DDX_Check (pDX, IDC_EDIT_WHOLE_WORD, m_bWholeWord);
  DDX_Check (pDX, IDC_EDIT_REGEXP, m_bRegExp);
  //}}AFX_DATA_MAP
}

void CFindTextDlg::
UpdateRegExp ()
{
  if (m_bRegExp)
    {
      m_ctlWholeWord.EnableWindow (FALSE);
      m_bWholeWord = FALSE;
    }
  else
    {
      m_ctlWholeWord.EnableWindow (TRUE);
    }
}

BEGIN_MESSAGE_MAP (CFindTextDlg, CDialog)
//{{AFX_MSG_MAP(CFindTextDlg)
ON_CBN_EDITCHANGE (IDC_EDIT_TEXT, OnChangeEditText)
ON_CBN_SELCHANGE (IDC_EDIT_TEXT, OnChangeEditText)
ON_BN_CLICKED (IDC_EDIT_REGEXP, OnRegExp)
//}}AFX_MSG_MAP
END_MESSAGE_MAP ()

/////////////////////////////////////////////////////////////////////////////
// CFindTextDlg message handlers

void CFindTextDlg::OnOK ()
{
  if (UpdateData ())
    {
      ASSERT (m_pBuddy != NULL);
      DWORD dwSearchFlags = 0;
      if (m_bMatchCase)
        dwSearchFlags |= FIND_MATCH_CASE;
      if (m_bWholeWord)
        dwSearchFlags |= FIND_WHOLE_WORD;
      if (m_bRegExp)
        dwSearchFlags |= FIND_REGEXP;
      if (m_nDirection == 0)
        dwSearchFlags |= FIND_DIRECTION_UP;

      CPoint ptTextPos;
      if (!m_pBuddy->FindText (m_sText, m_ptCurrentPos, dwSearchFlags, TRUE, &ptTextPos))
        {
          CString prompt;
          prompt.Format (IDS_EDIT_TEXT_NOT_FOUND, m_sText);
          AfxMessageBox (prompt);
          m_ptCurrentPos = CPoint (0, 0);
          return;
        }

      m_pBuddy->HighlightText (ptTextPos, m_pBuddy->m_nLastFindWhatLen, (dwSearchFlags & FIND_DIRECTION_UP) != 0);

      CDialog::OnOK ();
    }
}

void CFindTextDlg::
OnChangeEditText ()
{
  UpdateData();
  GetDlgItem (IDOK)->EnableWindow (!m_sText.IsEmpty ());
}

BOOL CFindTextDlg::
OnInitDialog ()
{
  CDialog::OnInitDialog ();

  UpdateData (FALSE);
  m_ctlFindText.m_sGroup = _T ("FindText");
  m_ctlFindText.OnSetfocus ();
  GetDlgItem (IDOK)->EnableWindow (!m_sText.IsEmpty ());
  UpdateRegExp ();

  return TRUE;
}

void CFindTextDlg::
OnCancel ()
{
  VERIFY (UpdateData ());
  CDialog::OnCancel ();
}

void CFindTextDlg::
OnRegExp ()
{
  UpdateData (TRUE);
  UpdateRegExp ();
  UpdateData (FALSE);
}