samples/validate/validate.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        validate.cpp
   3 // Purpose:     wxWidgets validator sample
   4 // Author:      Julian Smart
   5 // Modified by:
   6 // Created:     04/01/98
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Julian Smart
   9 // Licence:     wxWindows license
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 // See online help for an overview of validators. In general, a
  13 // validator transfers data between a control and a variable.
  14 // It may also test for validity of a string transferred to or
  15 // from a text control. All validators transfer data, but not
  16 // all test validity, so don't be confused by the name.
  17
  18 // For compilers that support precompilation, includes "wx/wx.h".
  19 #include "wx/wxprec.h"
  20
  21 #ifdef __BORLANDC__
  22     #pragma hdrstop
  23 #endif // __BORLANDC__
  24
  25 #ifndef WX_PRECOMP
  26     #include "wx/wx.h"
  27 #endif // WX_PRECOMP
  28
  29 #include "validate.h"
  30
  31 #include "wx/sizer.h"
  32 #include "wx/valgen.h"
  33 #include "wx/valtext.h"
  34
  35 #ifndef __WXMSW__
  36     #include "../sample.xpm"
  37 #endif
  38
  39 // ----------------------------------------------------------------------------
  40 // Global data
  41 // ----------------------------------------------------------------------------
  42
  43 MyData g_data;
  44
  45 wxString g_listbox_choices[] =
  46     {wxT("one"),  wxT("two"),  wxT("three")};
  47
  48 wxString g_combobox_choices[] =
  49     {wxT("yes"), wxT("no"), wxT("maybe")};
  50
  51 wxString g_radiobox_choices[] =
  52     {wxT("green"), wxT("yellow"), wxT("red")};
  53
  54 // ----------------------------------------------------------------------------
  55 // MyData
  56 // ----------------------------------------------------------------------------
  57
  58 MyData::MyData()
  59 {
  60     // This string will be passed to an alpha-only validator, which
  61     // will complain because spaces aren't alpha. Note that validation
  62     // is performed only when 'OK' is pressed. It would be nice to
  63     // enhance this so that validation would occur when the text
  64     // control loses focus.
  65     m_string = wxT("Spaces are invalid here");
  66     m_listbox_choices.Add(0);
  67 }
  68
  69 // ----------------------------------------------------------------------------
  70 // MyApp
  71 // ----------------------------------------------------------------------------
  72
  73 IMPLEMENT_APP(MyApp)
  74
  75 bool MyApp::OnInit()
  76 {
  77     if ( !wxApp::OnInit() )
  78         return false;
  79
  80     // Create and display the main frame window.
  81     MyFrame *frame = new MyFrame((wxFrame *) NULL, wxT("Validator Test"),
  82                                  50, 50, 300, 250);
  83     frame->Show(true);
  84     SetTopWindow(frame);
  85     return true;
  86 }
  87
  88 // ----------------------------------------------------------------------------
  89 // MyFrame
  90 // ----------------------------------------------------------------------------
  91
  92 BEGIN_EVENT_TABLE(MyFrame, wxFrame)
  93     EVT_MENU(wxID_EXIT, MyFrame::OnQuit)
  94     EVT_MENU(VALIDATE_TEST_DIALOG, MyFrame::OnTestDialog)
  95     EVT_MENU(VALIDATE_TOGGLE_BELL, MyFrame::OnToggleBell)
  96 END_EVENT_TABLE()
  97
  98 MyFrame::MyFrame(wxFrame *frame, const wxString&title, int x, int y, int w, int h)
  99        : wxFrame(frame, wxID_ANY, title, wxPoint(x, y), wxSize(w, h)),
 100          m_silent(true)
 101 {
 102     SetIcon(wxICON(sample));
 103
 104     // Create a listbox to display the validated data.
 105     m_listbox = new wxListBox(this, wxID_ANY);
 106     m_listbox->Append(wxString(_T("Try 'File|Test' to see how validators work.")));
 107
 108     wxMenu *file_menu = new wxMenu;
 109
 110     file_menu->Append(VALIDATE_TEST_DIALOG, wxT("&Test"), wxT("Demonstrate validators"));
 111     file_menu->AppendCheckItem(VALIDATE_TOGGLE_BELL, wxT("&Bell on error"), wxT("Toggle bell on error"));
 112     file_menu->AppendSeparator();
 113     file_menu->Append(wxID_EXIT, wxT("E&xit"));
 114
 115     wxMenuBar *menu_bar = new wxMenuBar;
 116     menu_bar->Append(file_menu, wxT("File"));
 117     SetMenuBar(menu_bar);
 118
 119     // All validators share a common (static) flag that controls
 120     // whether they beep on error. Here we turn it off:
 121     wxValidator::SetBellOnError(m_silent);
 122     file_menu->Check(VALIDATE_TOGGLE_BELL, !wxValidator::IsSilent());
 123
 124 #if wxUSE_STATUSBAR
 125     CreateStatusBar(1);
 126 #endif // wxUSE_STATUSBAR
 127 }
 128
 129 void MyFrame::OnQuit(wxCommandEvent& WXUNUSED(event))
 130 {
 131     Close(true);
 132 }
 133
 134 void MyFrame::OnTestDialog(wxCommandEvent& WXUNUSED(event))
 135 {
 136     // The validators defined in the dialog implementation bind controls
 137     // and variables together. Values are transferred between them behind
 138     // the scenes, so here we don't have to query the controls for their
 139     // values.
 140     MyDialog dialog(this, wxT("Validator demonstration"));
 141
 142     // When the dialog is displayed, validators automatically transfer
 143     // data from variables to their corresponding controls.
 144     if ( dialog.ShowModal() == wxID_OK )
 145     {
 146         // 'OK' was pressed, so controls that have validators are
 147         // automatically transferred to the variables we specified
 148         // when we created the validators.
 149         m_listbox->Clear();
 150         m_listbox->Append(wxString(_T("string: ")) + g_data.m_string);
 151         for(unsigned int i = 0; i < g_data.m_listbox_choices.GetCount(); ++i)
 152         {
 153             int j = g_data.m_listbox_choices[i];
 154             m_listbox->Append(wxString(_T("listbox choice(s): ")) + g_listbox_choices[j]);
 155         }
 156
 157         wxString checkbox_state(g_data.m_checkbox_state ? _T("checked") : _T("unchecked"));
 158         m_listbox->Append(wxString(_T("checkbox: ")) + checkbox_state);
 159         m_listbox->Append(wxString(_T("combobox: ")) + g_data.m_combobox_choice);
 160         m_listbox->Append(wxString(_T("radiobox: ")) + g_radiobox_choices[g_data.m_radiobox_choice]);
 161     }
 162 }
 163
 164 void MyFrame::OnToggleBell(wxCommandEvent& event)
 165 {
 166     m_silent = !m_silent;
 167     wxValidator::SetBellOnError(m_silent);
 168     event.Skip();
 169 }
 170
 171 // ----------------------------------------------------------------------------
 172 // MyDialog
 173 // ----------------------------------------------------------------------------
 174
 175 MyDialog::MyDialog( wxWindow *parent, const wxString& title,
 176                     const wxPoint& pos, const wxSize& size, const long WXUNUSED(style) ) :
 177     wxDialog(parent, VALIDATE_DIALOG_ID, title, pos, size, wxDEFAULT_DIALOG_STYLE|wxRESIZE_BORDER)
 178 {
 179     // Sizers automatically ensure a workable layout.
 180     wxBoxSizer *mainsizer = new wxBoxSizer( wxVERTICAL );
 181     wxFlexGridSizer *flexgridsizer = new wxFlexGridSizer(2, 2, 5, 5);
 182
 183     // Create and add controls to sizers. Note that a member variable
 184     // of g_data is bound to each control upon construction. There is
 185     // currently no easy way to substitute a different validator or a
 186     // different transfer variable after a control has been constructed.
 187
 188     // Pointers to some of these controls are saved in member variables
 189     // so that we can use them elsewhere, like this one.
 190     text = new wxTextCtrl(this, VALIDATE_TEXT, wxEmptyString,
 191         wxPoint(10, 10), wxSize(120, wxDefaultCoord), 0,
 192         wxTextValidator(wxFILTER_ALPHA, &g_data.m_string));
 193     flexgridsizer->Add(text);
 194
 195     // This wxCheckBox* doesn't need to be assigned to any pointer
 196     // because we don't use it elsewhere--it can be anonymous.
 197     // We don't need any such pointer to query its state, which
 198     // can be gotten directly from g_data.
 199     flexgridsizer->Add(new wxCheckBox(this, VALIDATE_CHECK, wxT("Sample checkbox"),
 200         wxPoint(130, 10), wxSize(120, wxDefaultCoord), 0,
 201         wxGenericValidator(&g_data.m_checkbox_state)));
 202
 203     flexgridsizer->Add(new wxListBox((wxWindow*)this, VALIDATE_LIST,
 204         wxPoint(10, 30), wxSize(120, wxDefaultCoord),
 205         3, g_listbox_choices, wxLB_MULTIPLE,
 206         wxGenericValidator(&g_data.m_listbox_choices)));
 207
 208     combobox = new wxComboBox((wxWindow*)this, VALIDATE_COMBO, wxEmptyString,
 209         wxPoint(130, 30), wxSize(120, wxDefaultCoord),
 210         3, g_combobox_choices, 0L,
 211         wxGenericValidator(&g_data.m_combobox_choice));
 212     flexgridsizer->Add(combobox);
 213
 214     mainsizer->Add(flexgridsizer, 1, wxGROW | wxALL, 10);
 215
 216     mainsizer->Add(new wxRadioBox((wxWindow*)this, VALIDATE_RADIO, wxT("Pick a color"),
 217         wxPoint(10, 100), wxDefaultSize,
 218         3, g_radiobox_choices, 1, wxRA_SPECIFY_ROWS,
 219         wxGenericValidator(&g_data.m_radiobox_choice)),
 220         0, wxGROW | wxALL, 10);
 221
 222     wxGridSizer *gridsizer = new wxGridSizer(2, 2, 5, 5);
 223
 224     wxButton *ok_button = new wxButton(this, wxID_OK, wxT("OK"), wxPoint(250, 70), wxSize(80, 30));
 225     ok_button->SetDefault();
 226     gridsizer->Add(ok_button);
 227     gridsizer->Add(new wxButton(this, wxID_CANCEL, wxT("Cancel"), wxPoint(250, 100), wxSize(80, 30)));
 228
 229     mainsizer->Add(gridsizer, 0, wxGROW | wxALL, 10);
 230
 231     SetSizer(mainsizer);
 232     mainsizer->SetSizeHints(this);
 233 }
 234
 235 bool MyDialog::TransferDataToWindow()
 236 {
 237     bool r = wxDialog::TransferDataToWindow();
 238     // These function calls have to be made here, after the
 239     // dialog has been created.
 240     text->SetFocus();
 241     combobox->SetSelection(0);
 242     return r;
 243 }
 244