src/common/valtext.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        valtext.cpp
   3 // Purpose:     wxTextValidator
   4 // Author:      Julian Smart
   5 // Modified by:
   6 // Created:     04/01/98
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Julian Smart
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 #if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
  13 #pragma implementation "valtext.h"
  14 #endif
  15
  16 // For compilers that support precompilation, includes "wx.h".
  17 #include "wx/wxprec.h"
  18
  19 #ifdef __BORLANDC__
  20   #pragma hdrstop
  21 #endif
  22
  23 #if wxUSE_VALIDATORS && wxUSE_TEXTCTRL
  24
  25 #ifndef WX_PRECOMP
  26   #include <stdio.h>
  27   #include "wx/textctrl.h"
  28   #include "wx/utils.h"
  29   #include "wx/msgdlg.h"
  30   #include "wx/intl.h"
  31 #endif
  32
  33 #include "wx/valtext.h"
  34
  35 #include <ctype.h>
  36 #include <string.h>
  37 #include <stdlib.h>
  38
  39 #ifdef __SALFORDC__
  40     #include <clib.h>
  41 #endif
  42
  43 IMPLEMENT_DYNAMIC_CLASS(wxTextValidator, wxValidator)
  44
  45 BEGIN_EVENT_TABLE(wxTextValidator, wxValidator)
  46     EVT_CHAR(wxTextValidator::OnChar)
  47 END_EVENT_TABLE()
  48
  49 static bool wxIsNumeric(const wxString& val);
  50
  51 wxTextValidator::wxTextValidator(long style, wxString *val)
  52 {
  53     m_validatorStyle = style;
  54     m_stringValue = val;
  55 /*
  56     m_refData = new wxVTextRefData;
  57
  58     M_VTEXTDATA->m_validatorStyle = style;
  59     M_VTEXTDATA->m_stringValue = val;
  60 */
  61 }
  62
  63 wxTextValidator::wxTextValidator(const wxTextValidator& val)
  64     : wxValidator()
  65 {
  66     Copy(val);
  67 }
  68
  69 bool wxTextValidator::Copy(const wxTextValidator& val)
  70 {
  71     wxValidator::Copy(val);
  72
  73     m_validatorStyle = val.m_validatorStyle;
  74     m_stringValue = val.m_stringValue;
  75
  76     m_includeList = val.m_includeList;
  77     m_excludeList = val.m_excludeList;
  78
  79     return true;
  80 }
  81
  82 static bool wxIsAlpha(const wxString& val)
  83 {
  84     int i;
  85     for ( i = 0; i < (int)val.Length(); i++)
  86     {
  87         if (!wxIsalpha(val[i]))
  88             return false;
  89     }
  90     return true;
  91 }
  92
  93 static bool wxIsAlphaNumeric(const wxString& val)
  94 {
  95     int i;
  96     for ( i = 0; i < (int)val.Length(); i++)
  97     {
  98         if (!wxIsalnum(val[i]))
  99             return false;
 100     }
 101     return true;
 102 }
 103
 104 // Called when the value in the window must be validated.
 105 // This function can pop up an error message.
 106 bool wxTextValidator::Validate(wxWindow *parent)
 107 {
 108     if( !CheckValidator() )
 109         return false;
 110
 111     wxTextCtrl *control = (wxTextCtrl *) m_validatorWindow;
 112
 113     // If window is disabled, simply return
 114     if ( !control->IsEnabled() )
 115         return true;
 116
 117     wxString val(control->GetValue());
 118
 119     bool ok = true;
 120
 121     // NB: this format string should contian exactly one '%s'
 122     wxString errormsg;
 123
 124     bool includeList = (m_validatorStyle & wxFILTER_INCLUDE_LIST) != 0;
 125     if ( includeList || (m_validatorStyle & wxFILTER_EXCLUDE_LIST) )
 126     {
 127         // if includeList, it's only ok to have the members of the list,
 128         // otherwise it's only ok to have non-members
 129         ok = includeList == m_includeList.Member(val);
 130         if ( !ok )
 131         {
 132             errormsg = _("'%s' is invalid");
 133         }
 134     }
 135     else if ( (m_validatorStyle & wxFILTER_ASCII) && !val.IsAscii() )
 136     {
 137         ok = false;
 138
 139         errormsg = _("'%s' should only contain ASCII characters.");
 140     }
 141     else if ( (m_validatorStyle & wxFILTER_ALPHA) && !wxIsAlpha(val) )
 142     {
 143         ok = false;
 144
 145         errormsg = _("'%s' should only contain alphabetic characters.");
 146     }
 147     else if ( (m_validatorStyle & wxFILTER_ALPHANUMERIC) && !wxIsAlphaNumeric(val))
 148     {
 149         ok = false;
 150
 151         errormsg = _("'%s' should only contain alphabetic or numeric characters.");
 152     }
 153     else if ( (m_validatorStyle & wxFILTER_NUMERIC) && !wxIsNumeric(val))
 154     {
 155         ok = false;
 156
 157         errormsg = _("'%s' should be numeric.");
 158     }
 159     else if ( (m_validatorStyle & wxFILTER_INCLUDE_CHAR_LIST) && !IsInCharIncludeList(val))
 160     {
 161         //it's only ok to have the members of the list
 162         errormsg = _("'%s' is invalid");
 163         ok = false;
 164     }
 165     else if ( (m_validatorStyle & wxFILTER_EXCLUDE_CHAR_LIST) && !IsNotInCharExcludeList(val))
 166     {
 167         // it's only ok to have non-members of the list
 168         errormsg = _("'%s' is invalid");
 169         ok = false;
 170     }
 171
 172     if ( !ok )
 173     {
 174         wxASSERT_MSG( !errormsg.empty(), _T("you forgot to set errormsg") );
 175
 176         m_validatorWindow->SetFocus();
 177
 178         wxString buf;
 179         buf.Printf(errormsg, val.c_str());
 180
 181         wxMessageBox(buf, _("Validation conflict"),
 182                      wxOK | wxICON_EXCLAMATION, parent);
 183     }
 184
 185     return ok;
 186 }
 187
 188 // Called to transfer data to the window
 189 bool wxTextValidator::TransferToWindow(void)
 190 {
 191     if( !CheckValidator() )
 192         return false;
 193
 194     if ( m_stringValue )
 195     {
 196         wxTextCtrl *control = (wxTextCtrl *) m_validatorWindow;
 197         control->SetValue(* m_stringValue);
 198     }
 199
 200     return true;
 201 }
 202
 203 // Called to transfer data to the window
 204 bool wxTextValidator::TransferFromWindow(void)
 205 {
 206     if( !CheckValidator() )
 207         return false;
 208
 209     if ( m_stringValue )
 210     {
 211         wxTextCtrl *control = (wxTextCtrl *) m_validatorWindow;
 212         *m_stringValue = control->GetValue();
 213     }
 214
 215     return true;
 216 }
 217
 218 void wxTextValidator::SetIncludeList(const wxStringList& list)
 219 {
 220     m_includeList = list;
 221 }
 222
 223 void wxTextValidator::SetExcludeList(const wxStringList& list)
 224 {
 225     m_excludeList = list;
 226 }
 227
 228 void wxTextValidator::OnChar(wxKeyEvent& event)
 229 {
 230 /*
 231     if ( !M_VTEXTDATA )
 232         return;
 233 */
 234
 235     if ( m_validatorWindow )
 236     {
 237         int keyCode = event.GetKeyCode();
 238
 239         // we don't filter special keys and Delete
 240         if (
 241              !(keyCode < WXK_SPACE || keyCode == WXK_DELETE || keyCode > WXK_START) &&
 242              (
 243               ((m_validatorStyle & wxFILTER_INCLUDE_CHAR_LIST) && !IsInCharIncludeList(wxString((wxChar) keyCode, 1))) ||
 244               ((m_validatorStyle & wxFILTER_EXCLUDE_CHAR_LIST) && !IsNotInCharExcludeList(wxString((wxChar) keyCode, 1))) ||
 245               ((m_validatorStyle & wxFILTER_ASCII) && !isascii(keyCode)) ||
 246               ((m_validatorStyle & wxFILTER_ALPHA) && !wxIsalpha(keyCode)) ||
 247               ((m_validatorStyle & wxFILTER_ALPHANUMERIC) && !wxIsalnum(keyCode)) ||
 248               ((m_validatorStyle & wxFILTER_NUMERIC) && !wxIsdigit(keyCode)
 249                                 && keyCode != '.' && keyCode != ',' && keyCode != '-')
 250              )
 251            )
 252         {
 253             if ( !wxValidator::IsSilent() )
 254                 wxBell();
 255
 256             // eat message
 257             return;
 258         }
 259     }
 260
 261     event.Skip();
 262 }
 263
 264 static bool wxIsNumeric(const wxString& val)
 265 {
 266     int i;
 267     for ( i = 0; i < (int)val.Length(); i++)
 268     {
 269         // Allow for "," (French) as well as "." -- in future we should
 270         // use wxSystemSettings or other to do better localisation
 271         if ((!wxIsdigit(val[i])) && (val[i] != '.') && (val[i] != ',') && (val[i] != wxT('e')) && (val[i] != wxT('E')) && (val[i] != wxT('+')) && (val[i] != wxT('-')))
 272             return false;
 273     }
 274     return true;
 275 }
 276
 277 bool wxTextValidator::IsInCharIncludeList(const wxString& val)
 278 {
 279     size_t i;
 280     for ( i = 0; i < val.Length(); i++)
 281     {
 282         if (!m_includeList.Member((wxString) val[i]))
 283             return false;
 284     }
 285     return true;
 286 }
 287
 288 bool wxTextValidator::IsNotInCharExcludeList(const wxString& val)
 289 {
 290     size_t i;
 291     for ( i = 0; i < val.Length(); i++)
 292     {
 293        if (m_excludeList.Member((wxString) val[i]))
 294        return false;
 295     }
 296     return true;
 297 }
 298
 299 #endif
 300   // wxUSE_VALIDATORS && wxUSE_TEXTCTRL