samples/wizard/wizard.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        wizard.cpp
   3 // Purpose:     wxWindows sample demonstrating wxWizard control
   4 // Author:      Vadim Zeitlin
   5 // Modified by:
   6 // Created:     15.08.99
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Vadim Zeitlin
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 // ============================================================================
  13 // declarations
  14 // ============================================================================
  15
  16 // ----------------------------------------------------------------------------
  17 // headers
  18 // ----------------------------------------------------------------------------
  19
  20 #if defined(__GNUG__) && !defined(__APPLE__)
  21     #pragma implementation "wizard.cpp"
  22     #pragma interface "wizard.cpp"
  23 #endif
  24
  25 // For compilers that support precompilation, includes "wx/wx.h".
  26 #include "wx/wxprec.h"
  27
  28 #ifdef __BORLANDC__
  29     #pragma hdrstop
  30 #endif
  31
  32 // for all others, include the necessary headers (this file is usually all you
  33 // need because it includes almost all "standard" wxWindows headers
  34 #ifndef WX_PRECOMP
  35     #include "wx/wx.h"
  36 #endif
  37
  38 #include "wx/wizard.h"
  39
  40 #ifndef __WXMSW__
  41     #include "wiztest.xpm"
  42     #include "wiztest2.xpm"
  43 #endif
  44
  45 // ----------------------------------------------------------------------------
  46 // constants
  47 // ----------------------------------------------------------------------------
  48
  49 // ids for menu items
  50 enum
  51 {
  52     Wizard_Quit = 100,
  53     Wizard_Run,
  54     Wizard_About = 1000
  55 };
  56
  57 // ----------------------------------------------------------------------------
  58 // private classes
  59 // ----------------------------------------------------------------------------
  60
  61 // Define a new application type, each program should derive a class from wxApp
  62 class MyApp : public wxApp
  63 {
  64 public:
  65     // override base class virtuals
  66     virtual bool OnInit();
  67 };
  68
  69 class MyFrame : public wxFrame
  70 {
  71 public:
  72     // ctor(s)
  73     MyFrame(const wxString& title);
  74
  75     // event handlers (these functions should _not_ be virtual)
  76     void OnQuit(wxCommandEvent& event);
  77     void OnAbout(wxCommandEvent& event);
  78     void OnRunWizard(wxCommandEvent& event);
  79     void OnWizardCancel(wxWizardEvent& event);
  80
  81 private:
  82     // any class wishing to process wxWindows events must use this macro
  83     DECLARE_EVENT_TABLE()
  84 };
  85
  86 // ----------------------------------------------------------------------------
  87 // some pages for our wizard
  88 // ----------------------------------------------------------------------------
  89
  90 // this shows how to simply control the validity of the user input by just
  91 // overriding TransferDataFromWindow() - of course, in a real program, the
  92 // check wouldn't be so trivial and the data will be probably saved somewhere
  93 // too
  94 //
  95 // it also shows how to use a different bitmap for one of the pages
  96 class wxValidationPage : public wxWizardPageSimple
  97 {
  98 public:
  99     wxValidationPage(wxWizard *parent) : wxWizardPageSimple(parent)
 100     {
 101         m_bitmap = wxBITMAP(wiztest2);
 102
 103         m_checkbox = new wxCheckBox(this, -1, _T("&Check me"));
 104     }
 105
 106     virtual bool TransferDataFromWindow()
 107     {
 108         if ( !m_checkbox->GetValue() )
 109         {
 110             wxMessageBox(_T("Check the checkbox first!"), _T("No way"),
 111                          wxICON_WARNING | wxOK, this);
 112
 113             return FALSE;
 114         }
 115
 116         return TRUE;
 117     }
 118
 119 private:
 120     wxCheckBox *m_checkbox;
 121 };
 122
 123 // This is a more complicated example of validity checking: using events we may
 124 // allow to return to the previous page, but not to proceed. It also
 125 // demonstrates how to intercept [Cancel] button press.
 126 class wxRadioboxPage : public wxWizardPageSimple
 127 {
 128 public:
 129     // directions in which we allow the user to proceed from this page
 130     enum
 131     {
 132         Forward, Backward, Both, Neither
 133     };
 134
 135     wxRadioboxPage(wxWizard *parent) : wxWizardPageSimple(parent)
 136     {
 137         // should correspond to the enum above
 138         //        static wxString choices[] = { "forward", "backward", "both", "neither" };
 139         // The above syntax can cause an internal compiler error with gcc.
 140         wxString choices[4];
 141         choices[0] = _T("forward");
 142         choices[1] = _T("backward");
 143         choices[2] = _T("both");
 144         choices[3] = _T("neither");
 145
 146         m_radio = new wxRadioBox(this, -1, _T("Allow to proceed:"),
 147                                  wxPoint(5, 5), wxDefaultSize,
 148                                  WXSIZEOF(choices), choices,
 149                                  1, wxRA_SPECIFY_COLS);
 150         m_radio->SetSelection(Both);
 151     }
 152
 153     // wizard event handlers
 154     void OnWizardCancel(wxWizardEvent& event)
 155     {
 156         if ( wxMessageBox(_T("Do you really want to cancel?"), _T("Question"),
 157                           wxICON_QUESTION | wxYES_NO, this) != wxYES )
 158         {
 159             // not confirmed
 160             event.Veto();
 161         }
 162     }
 163
 164     void OnWizardPageChanging(wxWizardEvent& event)
 165     {
 166         int sel = m_radio->GetSelection();
 167
 168         if ( sel == Both )
 169             return;
 170
 171         if ( event.GetDirection() && sel == Forward )
 172             return;
 173
 174         if ( !event.GetDirection() && sel == Backward )
 175             return;
 176
 177         wxMessageBox(_T("You can't go there"), _T("Not allowed"),
 178                      wxICON_WARNING | wxOK, this);
 179
 180         event.Veto();
 181     }
 182
 183 private:
 184     wxRadioBox *m_radio;
 185
 186     DECLARE_EVENT_TABLE()
 187 };
 188
 189 // this shows how to dynamically (i.e. during run-time) arrange the page order
 190 class wxCheckboxPage : public wxWizardPage
 191 {
 192 public:
 193     wxCheckboxPage(wxWizard *parent,
 194                    wxWizardPage *prev,
 195                    wxWizardPage *next)
 196         : wxWizardPage(parent)
 197     {
 198         m_prev = prev;
 199         m_next = next;
 200
 201         (void)new wxStaticText(this, -1, _T("Try checking the box below and\n")
 202                                          _T("then going back and clearing it"));
 203
 204         m_checkbox = new wxCheckBox(this, -1, _T("&Skip the next page"),
 205                                     wxPoint(5, 30));
 206     }
 207
 208     // implement wxWizardPage functions
 209     virtual wxWizardPage *GetPrev() const { return m_prev; }
 210     virtual wxWizardPage *GetNext() const
 211     {
 212         return m_checkbox->GetValue() ? m_next->GetNext() : m_next;
 213     }
 214
 215 private:
 216     wxWizardPage *m_prev,
 217                  *m_next;
 218
 219     wxCheckBox *m_checkbox;
 220 };
 221
 222 // ============================================================================
 223 // implementation
 224 // ============================================================================
 225
 226 // ----------------------------------------------------------------------------
 227 // event tables and such
 228 // ----------------------------------------------------------------------------
 229
 230 BEGIN_EVENT_TABLE(MyFrame, wxFrame)
 231     EVT_MENU(Wizard_Quit,  MyFrame::OnQuit)
 232     EVT_MENU(Wizard_About, MyFrame::OnAbout)
 233     EVT_MENU(Wizard_Run,   MyFrame::OnRunWizard)
 234
 235     EVT_WIZARD_CANCEL(-1, MyFrame::OnWizardCancel)
 236 END_EVENT_TABLE()
 237
 238 BEGIN_EVENT_TABLE(wxRadioboxPage, wxWizardPageSimple)
 239     EVT_WIZARD_PAGE_CHANGING(-1, wxRadioboxPage::OnWizardPageChanging)
 240     EVT_WIZARD_CANCEL(-1, wxRadioboxPage::OnWizardCancel)
 241 END_EVENT_TABLE()
 242
 243 IMPLEMENT_APP(MyApp)
 244
 245 // ----------------------------------------------------------------------------
 246 // the application class
 247 // ----------------------------------------------------------------------------
 248
 249 // `Main program' equivalent: the program execution "starts" here
 250 bool MyApp::OnInit()
 251 {
 252     MyFrame *frame = new MyFrame(_T("wxWizard Sample"));
 253
 254     // and show it (the frames, unlike simple controls, are not shown when
 255     // created initially)
 256     frame->Show(TRUE);
 257
 258     // we're done
 259     return TRUE;
 260 }
 261
 262 // ----------------------------------------------------------------------------
 263 // MyFrame
 264 // ----------------------------------------------------------------------------
 265
 266 MyFrame::MyFrame(const wxString& title)
 267        : wxFrame((wxFrame *)NULL, -1, title,
 268                   wxDefaultPosition, wxSize(250, 150))  // small frame
 269 {
 270     wxMenu *menuFile = new wxMenu;
 271     menuFile->Append(Wizard_Run, _T("&Run wizard...\tCtrl-R"));
 272     menuFile->AppendSeparator();
 273     menuFile->Append(Wizard_Quit, _T("E&xit\tAlt-X"), _T("Quit this program"));
 274
 275     wxMenu *helpMenu = new wxMenu;
 276     helpMenu->Append(Wizard_About, _T("&About...\tF1"), _T("Show about dialog"));
 277
 278     // now append the freshly created menu to the menu bar...
 279     wxMenuBar *menuBar = new wxMenuBar();
 280     menuBar->Append(menuFile, _T("&File"));
 281     menuBar->Append(helpMenu, _T("&Help"));
 282
 283     // ... and attach this menu bar to the frame
 284     SetMenuBar(menuBar);
 285
 286     // also create status bar which we use in OnWizardCancel
 287     CreateStatusBar();
 288 }
 289
 290 void MyFrame::OnQuit(wxCommandEvent& WXUNUSED(event))
 291 {
 292     // TRUE is to force the frame to close
 293     Close(TRUE);
 294 }
 295
 296 void MyFrame::OnAbout(wxCommandEvent& WXUNUSED(event))
 297 {
 298     wxMessageBox(_T("Demo of wxWizard class\n")
 299                  _T("© 1999, 2000 Vadim Zeitlin"),
 300                  _T("About wxWizard sample"), wxOK | wxICON_INFORMATION, this);
 301 }
 302
 303 void MyFrame::OnRunWizard(wxCommandEvent& WXUNUSED(event))
 304 {
 305     wxWizard *wizard = new wxWizard(this, -1,
 306                     _T("Absolutely Useless Wizard"),
 307                     wxBITMAP(wiztest));
 308
 309     // a wizard page may be either an object of predefined class
 310     wxWizardPageSimple *page1 = new wxWizardPageSimple(wizard);
 311     wxStaticText *text = new wxStaticText(page1, -1,
 312              _T("This wizard doesn't help you to do anything at all.\n")
 313              _T("\n")
 314              _T("The next pages will present you with more useless controls.")
 315         );
 316     wxSize size = text->GetBestSize();
 317
 318     // ... or a derived class
 319     wxRadioboxPage *page3 = new wxRadioboxPage(wizard);
 320     wxValidationPage *page4 = new wxValidationPage(wizard);
 321
 322     // set the page order using a convenience function - could also use
 323     // SetNext/Prev directly as below
 324     wxWizardPageSimple::Chain(page3, page4);
 325
 326     // this page is not a wxWizardPageSimple, so we use SetNext/Prev to insert
 327     // it into the chain of pages
 328     wxCheckboxPage *page2 = new wxCheckboxPage(wizard, page1, page3);
 329     page1->SetNext(page2);
 330     page3->SetPrev(page2);
 331
 332     wizard->SetPageSize(size);
 333     if ( wizard->RunWizard(page1) )
 334     {
 335         wxMessageBox(_T("The wizard successfully completed"), _T("That's all"),
 336                      wxICON_INFORMATION | wxOK);
 337     }
 338
 339     wizard->Destroy();
 340 }
 341
 342 void MyFrame::OnWizardCancel(wxWizardEvent& WXUNUSED(event))
 343 {
 344     wxLogStatus(this, wxT("The wizard was cancelled."));
 345 }