src/Utils/MiscUI/RegexEdit.cpp

   1 // TortoiseGit - a Windows shell extension for easy version control
   2
   3 // Copyright (C) 2012 - TortoiseGit
   4 // Copyright (C) 2011 - TortoiseSVN
   5
   6 // This program is free software; you can redistribute it and/or
   7 // modify it under the terms of the GNU General Public License
   8 // as published by the Free Software Foundation; either version 2
   9 // of the License, or (at your option) any later version.
  10
  11 // This program is distributed in the hope that it will be useful,
  12 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 // GNU General Public License for more details.
  15
  16 // You should have received a copy of the GNU General Public License
  17 // along with this program; if not, write to the Free Software Foundation,
  18 // 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  19 //
  20 #include "stdafx.h"
  21 #include "RegexEdit.h"
  22 #include <regex>
  23
  24 // CRegexEdit
  25
  26 IMPLEMENT_DYNAMIC(CRegexEdit, CEdit)
  27 CRegexEdit::CRegexEdit()
  28 {
  29         m_bValid = true;
  30 }
  31
  32 CRegexEdit::~CRegexEdit()
  33 {
  34 }
  35
  36 BEGIN_MESSAGE_MAP(CRegexEdit, CEdit)
  37         ON_WM_CTLCOLOR_REFLECT()
  38 END_MESSAGE_MAP()
  39
  40 HBRUSH CRegexEdit::CtlColor(CDC* pDC, UINT /*nCtlColor*/)
  41 {
  42         bool oldState = m_bValid;
  43         // check if the regex is valid
  44         m_bValid = true;
  45         try
  46         {
  47                 CString sRegex;
  48                 GetWindowText(sRegex);
  49                 const std::tr1::wregex regMatch(sRegex, std::tr1::regex_constants::icase | std::tr1::regex_constants::ECMAScript);
  50         }
  51         catch (std::exception)
  52         {
  53                 m_bValid = false;
  54         }
  55
  56         if (!m_bValid)
  57         {
  58                 pDC->SetBkColor(GetSysColor(COLOR_3DFACE) - RGB(0,20,20));
  59                 if (m_invalidBkgnd.GetSafeHandle() == NULL)
  60                         m_invalidBkgnd.CreateSolidBrush(GetSysColor(COLOR_3DFACE) - RGB(0,20,20));
  61                 return (HBRUSH)m_invalidBkgnd.GetSafeHandle();
  62         }
  63         else if (!oldState)
  64                 this->Invalidate();
  65
  66         return NULL;
  67 }