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valtext.cpp
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valtext.cpp
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/////////////////////////////////////////////////////////////////////////////
// Name: src/common/valtext.cpp
// Purpose: wxTextValidator
// Author: Julian Smart
// Modified by: Francesco Montorsi
// Created: 04/01/98
// RCS-ID: $Id$
// Copyright: (c) Julian Smart
// Licence: wxWindows licence
/////////////////////////////////////////////////////////////////////////////
// For compilers that support precompilation, includes "wx.h".
#include "wx/wxprec.h"
#ifdef __BORLANDC__
#pragma hdrstop
#endif
#if wxUSE_VALIDATORS && (wxUSE_TEXTCTRL || wxUSE_COMBOBOX)
#include "wx/valtext.h"
#ifndef WX_PRECOMP
#include <stdio.h>
#include "wx/textctrl.h"
#include "wx/combobox.h"
#include "wx/utils.h"
#include "wx/msgdlg.h"
#include "wx/intl.h"
#endif
#include <ctype.h>
#include <string.h>
#include <stdlib.h>
#include "wx/combo.h"
// ----------------------------------------------------------------------------
// global helpers
// ----------------------------------------------------------------------------
static bool wxIsNumeric(const wxString& val)
{
for ( wxString::const_iterator i = val.begin(); i != val.end(); ++i )
{
// Allow for "," (French) as well as "." -- in future we should
// use wxSystemSettings or other to do better localisation
if ((!wxIsdigit(*i)) &&
(*i != wxS('.')) && (*i != wxS(',')) && (*i != wxS('e')) &&
(*i != wxS('E')) && (*i != wxS('+')) && (*i != wxS('-')))
return false;
}
return true;
}
// ----------------------------------------------------------------------------
// wxTextValidator
// ----------------------------------------------------------------------------
IMPLEMENT_DYNAMIC_CLASS(wxTextValidator, wxValidator)
BEGIN_EVENT_TABLE(wxTextValidator, wxValidator)
EVT_CHAR(wxTextValidator::OnChar)
END_EVENT_TABLE()
wxTextValidator::wxTextValidator(long style, wxString *val)
{
m_stringValue = val;
SetStyle(style);
}
wxTextValidator::wxTextValidator(const wxTextValidator& val)
: wxValidator()
{
Copy(val);
}
void wxTextValidator::SetStyle(long style)
{
m_validatorStyle = style;
#if wxDEBUG_LEVEL
int check;
check = (int)HasFlag(wxFILTER_ALPHA) + (int)HasFlag(wxFILTER_ALPHANUMERIC) +
(int)HasFlag(wxFILTER_DIGITS) + (int)HasFlag(wxFILTER_NUMERIC);
wxASSERT_MSG(check <= 1,
"It makes sense to use only one of the wxFILTER_ALPHA/wxFILTER_ALPHANUMERIC/"
"wxFILTER_SIMPLE_NUMBER/wxFILTER_NUMERIC styles");
wxASSERT_MSG(((int)HasFlag(wxFILTER_INCLUDE_LIST) + (int)HasFlag(wxFILTER_INCLUDE_CHAR_LIST) <= 1) &&
((int)HasFlag(wxFILTER_EXCLUDE_LIST) + (int)HasFlag(wxFILTER_EXCLUDE_CHAR_LIST) <= 1),
"Using both wxFILTER_[IN|EX]CLUDE_LIST _and_ wxFILTER_[IN|EX]CLUDE_CHAR_LIST "
"doesn't work since wxTextValidator internally uses the same array for both");
check = (int)HasFlag(wxFILTER_INCLUDE_LIST) + (int)HasFlag(wxFILTER_INCLUDE_CHAR_LIST) +
(int)HasFlag(wxFILTER_EXCLUDE_LIST) + (int)HasFlag(wxFILTER_EXCLUDE_CHAR_LIST);
wxASSERT_MSG(check <= 1,
"Using both an include/exclude list may lead to unexpected results");
#endif // wxDEBUG_LEVEL
}
bool wxTextValidator::Copy(const wxTextValidator& val)
{
wxValidator::Copy(val);
m_validatorStyle = val.m_validatorStyle;
m_stringValue = val.m_stringValue;
m_includes = val.m_includes;
m_excludes = val.m_excludes;
return true;
}
wxTextEntry *wxTextValidator::GetTextEntry()
{
#if wxUSE_TEXTCTRL
if (wxDynamicCast(m_validatorWindow, wxTextCtrl))
{
return (wxTextCtrl*)m_validatorWindow;
}
#endif
#if wxUSE_COMBOBOX
if (wxDynamicCast(m_validatorWindow, wxComboBox))
{
return (wxComboBox*)m_validatorWindow;
}
#endif
#if wxUSE_COMBOCTRL
if (wxDynamicCast(m_validatorWindow, wxComboCtrl))
{
return (wxComboCtrl*)m_validatorWindow;
}
#endif
wxFAIL_MSG(
"wxTextValidator can only be used with wxTextCtrl, wxComboBox, "
"or wxComboCtrl"
);
return NULL;
}
// Called when the value in the window must be validated.
// This function can pop up an error message.
bool wxTextValidator::Validate(wxWindow *parent)
{
// If window is disabled, simply return
if ( !m_validatorWindow->IsEnabled() )
return true;
wxTextEntry * const text = GetTextEntry();
if ( !text )
return false;
wxString val(text->GetValue());
wxString errormsg;
if ( HasFlag(wxFILTER_EMPTY) && val.empty() )
{
errormsg = _("Required information entry is empty.");
}
else if ( !(errormsg = IsValid(val)).empty() )
{
// NB: this format string should always contain exactly one '%s'
wxString buf;
buf.Printf(errormsg, val.c_str());
errormsg = buf;
}
if ( !errormsg.empty() )
{
m_validatorWindow->SetFocus();
wxMessageBox(errormsg, _("Validation conflict"),
wxOK | wxICON_EXCLAMATION, parent);
return false;
}
return true;
}
// Called to transfer data to the window
bool wxTextValidator::TransferToWindow()
{
if ( m_stringValue )
{
wxTextEntry * const text = GetTextEntry();
if ( !text )
return false;
text->SetValue(*m_stringValue);
}
return true;
}
// Called to transfer data to the window
bool wxTextValidator::TransferFromWindow()
{
if ( m_stringValue )
{
wxTextEntry * const text = GetTextEntry();
if ( !text )
return false;
*m_stringValue = text->GetValue();
}
return true;
}
// IRIX mipsPro refuses to compile wxStringCheck<func>() if func is inline so
// let's work around this by using this non-template function instead of
// wxStringCheck(). And while this might be fractionally less efficient because
// the function call won't be inlined like this, we don't care enough about
// this to add extra #ifs for non-IRIX case.
namespace
{
bool CheckString(bool (*func)(const wxUniChar&), const wxString& str)
{
for ( wxString::const_iterator i = str.begin(); i != str.end(); ++i )
{
if ( !func(*i) )
return false;
}
return true;
}
} // anonymous namespace
wxString wxTextValidator::IsValid(const wxString& val) const
{
// wxFILTER_EMPTY is checked for in wxTextValidator::Validate
if ( HasFlag(wxFILTER_ASCII) && !val.IsAscii() )
return _("'%s' should only contain ASCII characters.");
if ( HasFlag(wxFILTER_ALPHA) && !CheckString(wxIsalpha, val) )
return _("'%s' should only contain alphabetic characters.");
if ( HasFlag(wxFILTER_ALPHANUMERIC) && !CheckString(wxIsalnum, val) )
return _("'%s' should only contain alphabetic or numeric characters.");
if ( HasFlag(wxFILTER_DIGITS) && !CheckString(wxIsdigit, val) )
return _("'%s' should only contain digits.");
if ( HasFlag(wxFILTER_NUMERIC) && !wxIsNumeric(val) )
return _("'%s' should be numeric.");
if ( HasFlag(wxFILTER_INCLUDE_LIST) && m_includes.Index(val) == wxNOT_FOUND )
return _("'%s' is invalid");
if ( HasFlag(wxFILTER_INCLUDE_CHAR_LIST) && !ContainsOnlyIncludedCharacters(val) )
return _("'%s' is invalid");
if ( HasFlag(wxFILTER_EXCLUDE_LIST) && m_excludes.Index(val) != wxNOT_FOUND )
return _("'%s' is invalid");
if ( HasFlag(wxFILTER_EXCLUDE_CHAR_LIST) && ContainsExcludedCharacters(val) )
return _("'%s' is invalid");
return wxEmptyString;
}
bool wxTextValidator::ContainsOnlyIncludedCharacters(const wxString& val) const
{
for ( wxString::const_iterator i = val.begin(); i != val.end(); ++i )
if (m_includes.Index((wxString) *i) == wxNOT_FOUND)
// one character of 'val' is NOT present in m_includes...
return false;
// all characters of 'val' are present in m_includes
return true;
}
bool wxTextValidator::ContainsExcludedCharacters(const wxString& val) const
{
for ( wxString::const_iterator i = val.begin(); i != val.end(); ++i )
if (m_excludes.Index((wxString) *i) != wxNOT_FOUND)
// one character of 'val' is present in m_excludes...
return true;
// all characters of 'val' are NOT present in m_excludes
return false;
}
void wxTextValidator::SetCharIncludes(const wxString& chars)
{
wxArrayString arr;
for ( wxString::const_iterator i = chars.begin(); i != chars.end(); ++i )
arr.Add(*i);
SetIncludes(arr);
}
void wxTextValidator::SetCharExcludes(const wxString& chars)
{
wxArrayString arr;
for ( wxString::const_iterator i = chars.begin(); i != chars.end(); ++i )
arr.Add(*i);
SetExcludes(arr);
}
void wxTextValidator::OnChar(wxKeyEvent& event)
{
if (!m_validatorWindow)
{
event.Skip();
return;
}
int keyCode = event.GetKeyCode();
// we don't filter special keys and delete
if (keyCode < WXK_SPACE || keyCode == WXK_DELETE || keyCode >= WXK_START)
{
event.Skip();
return;
}
wxString str((wxUniChar)keyCode, 1);
if (!IsValid(str).empty())
{
if ( !wxValidator::IsSilent() )
wxBell();
// eat message
return;
}
else
event.Skip();
}
#endif
// wxUSE_VALIDATORS && (wxUSE_TEXTCTRL || wxUSE_COMBOBOX)