wxWidgets/samples/validate/validate.cpp
2003-07-28 17:51:33 +00:00

242 lines
8.6 KiB
C++

/////////////////////////////////////////////////////////////////////////////
// Name: validate.cpp
// Purpose: wxWindows validator sample
// Author: Julian Smart
// Modified by:
// Created: 04/01/98
// RCS-ID: $Id$
// Copyright: (c) Julian Smart
// Licence: wxWindows license
/////////////////////////////////////////////////////////////////////////////
// See online help for an overview of validators. In general, a
// validator transfers data between a control and a variable.
// It may also test for validity of a string transferred to or
// from a text control. All validators transfer data, but not
// all test validity, so don't be confused by the name.
#if defined(__GNUG__) && !defined(__APPLE__)
# pragma implementation
#endif // __GNUG__
// For compilers that support precompilation, includes "wx/wx.h".
#include "wx/wxprec.h"
#ifdef __BORLANDC__
# pragma hdrstop
#endif // __BORLANDC__
#ifndef WX_PRECOMP
# include "wx/wx.h"
#endif // WX_PRECOMP
#include "validate.h"
#include "wx/sizer.h"
#include "wx/valgen.h"
#include "wx/valtext.h"
// ----------------------------------------------------------------------------
// Global data
// ----------------------------------------------------------------------------
MyData g_data;
wxString g_listbox_choices[] =
{wxT("one"), wxT("two"), wxT("three")};
wxString g_combobox_choices[] =
{wxT("yes"), wxT("no"), wxT("maybe")};
wxString g_radiobox_choices[] =
{wxT("green"), wxT("yellow"), wxT("red")};
// ----------------------------------------------------------------------------
// MyData
// ----------------------------------------------------------------------------
MyData::MyData()
{
// This string will be passed to an alpha-only validator, which
// will complain because spaces aren't alpha. Note that validation
// is performed only when 'OK' is pressed. It would be nice to
// enhance this so that validation would occur when the text
// control loses focus.
m_string = wxT("Spaces are invalid here");
m_listbox_choices.Add(0);
}
// ----------------------------------------------------------------------------
// MyApp
// ----------------------------------------------------------------------------
IMPLEMENT_APP(MyApp)
bool MyApp::OnInit()
{
// Create and display the main frame window.
MyFrame *frame = new MyFrame((wxFrame *) NULL, wxT("Validator Test"),
50, 50, 300, 250);
frame->Show(true);
SetTopWindow(frame);
return true;
}
// ----------------------------------------------------------------------------
// MyFrame
// ----------------------------------------------------------------------------
BEGIN_EVENT_TABLE(MyFrame, wxFrame)
EVT_MENU(wxID_EXIT, MyFrame::OnQuit)
EVT_MENU(VALIDATE_TEST_DIALOG, MyFrame::OnTestDialog)
EVT_MENU(VALIDATE_TOGGLE_BELL, MyFrame::OnToggleBell)
END_EVENT_TABLE()
MyFrame::MyFrame(wxFrame *frame, const wxString&title, int x, int y, int w, int h)
: wxFrame(frame, -1, title, wxPoint(x, y), wxSize(w, h)),
m_silent(true)
{
#ifdef __WXMSW__
SetIcon(wxIcon(_T("mondrian")));
#endif // __WXMSW__
// Create a listbox to display the validated data.
m_listbox = new wxListBox(this, -1);
m_listbox->Append(wxString(_T("Try 'File|Test' to see how validators work.")));
wxMenu *file_menu = new wxMenu;
file_menu->Append(VALIDATE_TEST_DIALOG, wxT("&Test"), wxT("Demonstrate validators"));
file_menu->Append(VALIDATE_TOGGLE_BELL, wxT("&Bell on error"), wxT("Toggle bell on error"), true);
file_menu->AppendSeparator();
file_menu->Append(wxID_EXIT, wxT("E&xit"));
wxMenuBar *menu_bar = new wxMenuBar;
menu_bar->Append(file_menu, wxT("File"));
SetMenuBar(menu_bar);
// All validators share a common (static) flag that controls
// whether they beep on error. Here we turn it off:
wxValidator::SetBellOnError(m_silent);
file_menu->Check(VALIDATE_TOGGLE_BELL, !wxValidator::IsSilent());
CreateStatusBar(1);
}
void MyFrame::OnQuit(wxCommandEvent& WXUNUSED(event))
{
Close(true);
}
void MyFrame::OnTestDialog(wxCommandEvent& WXUNUSED(event))
{
// The validators defined in the dialog implementation bind controls
// and variables together. Values are transferred between them behind
// the scenes, so here we don't have to query the controls for their
// values.
MyDialog dialog(this, wxT("Validator demonstration"));
// When the dialog is displayed, validators automatically transfer
// data from variables to their corresponding controls.
if ( dialog.ShowModal() == wxID_OK )
{
// 'OK' was pressed, so controls that have validators are
// automatically transferred to the variables we specified
// when we created the validators.
m_listbox->Clear();
m_listbox->Append(wxString(_T("string: ")) + g_data.m_string);
for(unsigned int i = 0; i < g_data.m_listbox_choices.GetCount(); ++i)
{
int j = g_data.m_listbox_choices[i];
m_listbox->Append(wxString(_T("listbox choice(s): ")) + g_listbox_choices[j]);
}
wxString checkbox_state(g_data.m_checkbox_state ? _T("checked") : _T("unchecked"));
m_listbox->Append(wxString(_T("checkbox: ")) + checkbox_state);
m_listbox->Append(wxString(_T("combobox: ")) + g_data.m_combobox_choice);
m_listbox->Append(wxString(_T("radiobox: ")) + g_radiobox_choices[g_data.m_radiobox_choice]);
}
}
void MyFrame::OnToggleBell(wxCommandEvent& event)
{
m_silent = !m_silent;
wxValidator::SetBellOnError(m_silent);
event.Skip();
}
// ----------------------------------------------------------------------------
// MyDialog
// ----------------------------------------------------------------------------
MyDialog::MyDialog( wxWindow *parent, const wxString& title,
const wxPoint& pos, const wxSize& size, const long WXUNUSED(style) ) :
wxDialog(parent, VALIDATE_DIALOG_ID, title, pos, size, wxDEFAULT_DIALOG_STYLE|wxDIALOG_MODAL|wxRESIZE_BORDER)
{
// Sizers automatically ensure a workable layout.
wxBoxSizer *mainsizer = new wxBoxSizer( wxVERTICAL );
wxFlexGridSizer *flexgridsizer = new wxFlexGridSizer(2, 2, 5, 5);
// Create and add controls to sizers. Note that a member variable
// of g_data is bound to each control upon construction. There is
// currently no easy way to substitute a different validator or a
// different transfer variable after a control has been constructed.
// Pointers to some of these controls are saved in member variables
// so that we can use them elsewhere, like this one.
text = new wxTextCtrl(this, VALIDATE_TEXT, wxT(""),
wxPoint(10, 10), wxSize(120, -1), 0,
wxTextValidator(wxFILTER_ALPHA, &g_data.m_string));
flexgridsizer->Add(text);
// This wxCheckBox* doesn't need to be assigned to any pointer
// because we don't use it elsewhere--it can be anonymous.
// We don't need any such pointer to query its state, which
// can be gotten directly from g_data.
flexgridsizer->Add(new wxCheckBox(this, VALIDATE_CHECK, wxT("Sample checkbox"),
wxPoint(130, 10), wxSize(120, -1), 0,
wxGenericValidator(&g_data.m_checkbox_state)));
flexgridsizer->Add(new wxListBox((wxWindow*)this, VALIDATE_LIST,
wxPoint(10, 30), wxSize(120, -1),
3, g_listbox_choices, wxLB_MULTIPLE,
wxGenericValidator(&g_data.m_listbox_choices)));
combobox = new wxComboBox((wxWindow*)this, VALIDATE_COMBO, wxT(""),
wxPoint(130, 30), wxSize(120, -1),
3, g_combobox_choices, 0L,
wxGenericValidator(&g_data.m_combobox_choice));
flexgridsizer->Add(combobox);
mainsizer->Add(flexgridsizer, 1, wxGROW | wxALL, 10);
mainsizer->Add(new wxRadioBox((wxWindow*)this, VALIDATE_RADIO, wxT("Pick a color"),
wxPoint(10, 100), wxSize(-1, -1),
3, g_radiobox_choices, 1, wxRA_SPECIFY_ROWS,
wxGenericValidator(&g_data.m_radiobox_choice)),
0, wxGROW | wxALL, 10);
wxGridSizer *gridsizer = new wxGridSizer(2, 2, 5, 5);
wxButton *ok_button = new wxButton(this, wxID_OK, wxT("OK"), wxPoint(250, 70), wxSize(80, 30));
ok_button->SetDefault();
gridsizer->Add(ok_button);
gridsizer->Add(new wxButton(this, wxID_CANCEL, wxT("Cancel"), wxPoint(250, 100), wxSize(80, 30)));
mainsizer->Add(gridsizer, 0, wxGROW | wxALL, 10);
SetSizer(mainsizer);
mainsizer->SetSizeHints(this);
}
bool MyDialog::TransferDataToWindow()
{
bool r = wxDialog::TransferDataToWindow();
// These function calls have to be made here, after the
// dialog has been created.
text->SetFocus();
combobox->SetSelection(0);
return r;
}