* Add special wxValidator derivation: wxNumericTextValidator
* This class validates input for wxTextCtrl to be numeric only * Also upon initialization of the window that contains the "validated" text controls; these controls will be filled with a number given by a passed pointer * Upon closing of this window the current value from these text controls will be written back into that pointer git-svn-id: svn+ssh://svn.gna.org/svn/warzone/trunk@2211 4a71c877-e1ca-e34f-864e-861f7616d084master
Giel van Schijndel
parent
962a6db92c
commit
18bf3bfa9c
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/*
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This file is part of Warzone 2100.
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Copyright (C) 2007 Giel van Schijndel
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Copyright (C) 2007 Warzone Resurrection Project
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Warzone 2100 is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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Warzone 2100 is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with Warzone 2100; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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$Revision$
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$Id$
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$HeadURL$
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*/
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#include "numtextval.hpp"
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#include <wx/string.h>
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#include <wx/wxchar.h>
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BEGIN_EVENT_TABLE(wxTextValidator, wxValidator)
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EVT_CHAR(wxNumericTextValidator::OnChar)
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END_EVENT_TABLE()
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wxNumericTextValidator::wxNumericTextValidator(long* val) :
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_longValue(val),
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_UlongValue(NULL)
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{
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}
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wxNumericTextValidator::wxNumericTextValidator(unsigned long* val) :
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_longValue(NULL),
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_UlongValue(val)
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{
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}
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wxNumericTextValidator::wxNumericTextValidator(const wxNumericTextValidator& rhs) :
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_longValue(rhs._longValue),
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_UlongValue(rhs._UlongValue)
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{
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wxValidator::Copy(rhs);
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}
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const wxNumericTextValidator& wxNumericTextValidator::operator=(const wxNumericTextValidator& rhs)
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{
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wxValidator::Copy(rhs);
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_longValue = rhs._longValue;
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_UlongValue = rhs._UlongValue;
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}
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wxObject* wxNumericTextValidator::Clone() const;
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{
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return new wxNumericTextValidator(*this);
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}
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static inline bool wxIsNumeric(int keycode)
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{
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return keycode == wxT('.')
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|| keycode == wxT(',')
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|| keycode == wxT('e')
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|| keycode == wxT('E')
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|| keycode == wxT('+')
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|| keycode == wxT('-')
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|| wxIsdigit(keycode);
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}
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static bool wxIsNumeric(const wxString& val)
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{
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for (unsigned int i = 0; i < val.Length(); ++i)
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{
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// Allow for "," (French) as well as "." -- in future we should
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// use wxSystemSettings or other to do better localisation
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if (!wxIsNumeric(val[i]))
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return false;
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}
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return true;
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}
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// Called when the value in the window must be validated.
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// This function can pop up an error message.
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bool wxNumericTextValidator::Validate(wxWindow *parent)
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{
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if (!CheckValidator())
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return false;
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wxTextCtrl* control = dynamic_cast<wxTextCtrl*>(m_validatorWindow);
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if (!control)
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return false;
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// If window is disabled, simply return
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if ( !control->IsEnabled() )
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return true;
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if (!wxIsNumeric(control->GetValue()))
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{
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m_validatorWindow->SetFocus();
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wxString buf;
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buf.Printf(_("'%s' should be numeric."), val.c_str());
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wxMessageBox(buf, _("Validation conflict"),
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wxOK | wxICON_EXCLAMATION, parent);
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return false;
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}
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return true;
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}
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// Called to transfer data to the window
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bool wxNumericTextValidator::TransferToWindow()
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{
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if (!CheckValidator())
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return false;
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if (!_longValue
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&& !_UlongValue)
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return true;
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wxTextCtrl* control = dynamic_cast<wxTextCtrl*>(m_validatorWindow);
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if (!control)
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return false;
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if (_longValue)
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control->SetValue(wxString::Format("%d", *_longValue));
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else
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control->SetValue(wxString::Format("%u", *_UlongValue));
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return true;
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}
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// Called to transfer data from the window
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bool wxNumericTextValidator::TransferFromWindow()
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{
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if (!CheckValidator())
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return false;
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if (!_longValue
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&& !_UlongValue)
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return true;
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wxTextCtrl* control = dynamic_cast<wxTextCtrl*>(m_validatorWindow);
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if (!control)
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return false;
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if (_longValue)
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control->ToLong(_longValue);
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else
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control->ToULong(_UlongValue);
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return true;
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}
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// Filter keystrokes
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void wxNumericTextValidator::OnChar(wxKeyEvent& event)
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{
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if (!m_validatorWindow)
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return;
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int keycode = event.GetKeyCode();
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// we don't filter special keys and Delete
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if (keyCode < WXK_SPACE || keyCode == WXK_DELETE || keyCode > WXK_START)
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{
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// Don't disable following event handlers in the chain (i.e. use the key)
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event.Skip();
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return;
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}
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if (!wxIsNumeric(keycode))
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{
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if (!wxValidator::IsSilent())
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wxBell();
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// eat message
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return;
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}
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// Don't disable following event handlers in the chain (i.e. use the key)
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event.Skip();
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}
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@ -0,0 +1,72 @@
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/*
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This file is part of Warzone 2100.
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Copyright (C) 2007 Giel van Schijndel
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Copyright (C) 2007 Warzone Resurrection Project
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Warzone 2100 is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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Warzone 2100 is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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|
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You should have received a copy of the GNU General Public License
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along with Warzone 2100; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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$Revision$
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$Id$
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$HeadURL$
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*/
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#ifndef __INCLUDE_NUMTEXTVAL_HPP__
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#define __INCLUDE_NUMTEXTVAL_HPP__
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#include <wx/wxprec.h>
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#include <wx/textctrl.h>
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#include <wx/validate.h>
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class wxNumericTextValidator : public wxValidator
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{
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public:
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wxNumericTextValidator(long* val = NULL);
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wxNumericTextValidator(unsigned long* val = NULL);
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wxNumericTextValidator(const wxNumericTextValidator& rhs);
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const wxNumericTextValidator& operator=(const wxNumericTextValidator& rhs);
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virtual wxObject* Clone() const;
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// Called when the value in the window must be validated.
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// This function can pop up an error message.
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virtual bool Validate(wxWindow *parent)
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// Called to transfer data to the window
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virtual bool TransferToWindow();
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// Called to transfer data from the window
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virtual bool TransferFromWindow();
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// Filter keystrokes
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void OnChar(wxKeyEvent& event);
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protected:
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inline bool CheckValidator() const
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{
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wxCHECK_MSG( m_validatorWindow, false,
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_T("No window associated with validator") );
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wxCHECK_MSG( m_validatorWindow->IsKindOf(CLASSINFO(wxTextCtrl)), false,
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_T("wxNumericTextValidator is only for wxTextCtrl's") );
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return true;
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}
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private:
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long* _longValue;
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unsigned long* _UlongValue;
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};
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#endif // __INCLUDE_NUMTEXTVAL_HPP__
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