src/generic/wizard.cpp

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // Name:        generic/wizard.cpp
   3 // Purpose:     generic implementation of wxWizard class
   4 // Author:      Vadim Zeitlin
   5 // Modified by: Robert Cavanaugh
   6 //              1) Added capability for wxWizardPage to accept resources
   7 //              2) Added "Help" button handler stub
   8 //              3) Fixed ShowPage() bug on displaying bitmaps
   9 //              Robert Vazan (sizers)
  10 // Created:     15.08.99
  11 // RCS-ID:      $Id$
  12 // Copyright:   (c) 1999 Vadim Zeitlin <zeitlin@dptmaths.ens-cachan.fr>
  13 // Licence:     wxWindows licence
  14 ///////////////////////////////////////////////////////////////////////////////
  15
  16 // ============================================================================
  17 // declarations
  18 // ============================================================================
  19
  20 // ----------------------------------------------------------------------------
  21 // headers
  22 // ----------------------------------------------------------------------------
  23
  24 #if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
  25     #pragma implementation "wizardg.h"
  26 #endif
  27
  28 // For compilers that support precompilation, includes "wx.h".
  29 #include "wx/wxprec.h"
  30
  31 #ifdef __BORLANDC__
  32     #pragma hdrstop
  33 #endif
  34
  35 #if wxUSE_WIZARDDLG
  36
  37 #ifndef WX_PRECOMP
  38     #include "wx/dynarray.h"
  39     #include "wx/intl.h"
  40     #include "wx/statbmp.h"
  41     #include "wx/button.h"
  42 #endif //WX_PRECOMP
  43
  44 #include "wx/statline.h"
  45 #include "wx/sizer.h"
  46
  47 #include "wx/wizard.h"
  48
  49 // ----------------------------------------------------------------------------
  50 // wxWizardSizer
  51 // ----------------------------------------------------------------------------
  52
  53 class wxWizardSizer : public wxSizer
  54 {
  55 public:
  56     wxWizardSizer(wxWizard *owner);
  57
  58     void RecalcSizes();
  59     wxSize CalcMin();
  60
  61     wxSize GetMaxChildSize();
  62     int Border() const;
  63
  64 private:
  65     wxSize SiblingSize(wxSizerItem *child);
  66
  67     wxWizard *m_owner;
  68     bool m_childSizeValid;
  69     wxSize m_childSize;
  70 };
  71
  72 // ----------------------------------------------------------------------------
  73 // event tables and such
  74 // ----------------------------------------------------------------------------
  75
  76 DEFINE_EVENT_TYPE(wxEVT_WIZARD_PAGE_CHANGED)
  77 DEFINE_EVENT_TYPE(wxEVT_WIZARD_PAGE_CHANGING)
  78 DEFINE_EVENT_TYPE(wxEVT_WIZARD_CANCEL)
  79 DEFINE_EVENT_TYPE(wxEVT_WIZARD_FINISHED)
  80 DEFINE_EVENT_TYPE(wxEVT_WIZARD_HELP)
  81
  82 BEGIN_EVENT_TABLE(wxWizard, wxDialog)
  83     EVT_BUTTON(wxID_CANCEL, wxWizard::OnCancel)
  84     EVT_BUTTON(wxID_BACKWARD, wxWizard::OnBackOrNext)
  85     EVT_BUTTON(wxID_FORWARD, wxWizard::OnBackOrNext)
  86     EVT_BUTTON(wxID_HELP, wxWizard::OnHelp)
  87
  88     EVT_WIZARD_PAGE_CHANGED(-1, wxWizard::OnWizEvent)
  89     EVT_WIZARD_PAGE_CHANGING(-1, wxWizard::OnWizEvent)
  90     EVT_WIZARD_CANCEL(-1, wxWizard::OnWizEvent)
  91     EVT_WIZARD_FINISHED(-1, wxWizard::OnWizEvent)
  92     EVT_WIZARD_HELP(-1, wxWizard::OnWizEvent)
  93 END_EVENT_TABLE()
  94
  95 IMPLEMENT_DYNAMIC_CLASS(wxWizard, wxDialog)
  96
  97 /*
  98         TODO PROPERTIES :
  99         wxWizard
 100                 extstyle
 101                 title
 102 */
 103
 104 IMPLEMENT_ABSTRACT_CLASS(wxWizardPage, wxPanel)
 105 IMPLEMENT_DYNAMIC_CLASS(wxWizardPageSimple, wxWizardPage)
 106 IMPLEMENT_DYNAMIC_CLASS(wxWizardEvent, wxNotifyEvent)
 107
 108 // ============================================================================
 109 // implementation
 110 // ============================================================================
 111
 112 // ----------------------------------------------------------------------------
 113 // wxWizardPage
 114 // ----------------------------------------------------------------------------
 115
 116 void wxWizardPage::Init()
 117 {
 118     m_bitmap = wxNullBitmap;
 119 }
 120
 121 wxWizardPage::wxWizardPage(wxWizard *parent,
 122                            const wxBitmap& bitmap,
 123                            const wxChar *resource)
 124 {
 125     Create(parent, bitmap, resource);
 126 }
 127
 128 bool wxWizardPage::Create(wxWizard *parent,
 129                           const wxBitmap& bitmap,
 130                           const wxChar *resource)
 131 {
 132     if ( !wxPanel::Create(parent, -1) )
 133         return FALSE;
 134
 135     if ( resource != NULL )
 136     {
 137 #if wxUSE_WX_RESOURCES
 138 #if 0
 139        if ( !LoadFromResource(this, resource) )
 140         {
 141             wxFAIL_MSG(wxT("wxWizardPage LoadFromResource failed!!!!"));
 142         }
 143 #endif
 144 #endif // wxUSE_RESOURCES
 145     }
 146
 147     m_bitmap = bitmap;
 148
 149     // initially the page is hidden, it's shown only when it becomes current
 150     Hide();
 151
 152     return TRUE;
 153 }
 154
 155 // ----------------------------------------------------------------------------
 156 // wxWizardPageSimple
 157 // ----------------------------------------------------------------------------
 158
 159 wxWizardPage *wxWizardPageSimple::GetPrev() const
 160 {
 161     return m_prev;
 162 }
 163
 164 wxWizardPage *wxWizardPageSimple::GetNext() const
 165 {
 166     return m_next;
 167 }
 168
 169 // ----------------------------------------------------------------------------
 170 // wxWizardSizer
 171 // ----------------------------------------------------------------------------
 172
 173 wxWizardSizer::wxWizardSizer(wxWizard *owner)
 174     : m_owner(owner)
 175 {
 176     m_childSizeValid = false;
 177 }
 178
 179 void wxWizardSizer::RecalcSizes()
 180 {
 181     // Effect of this function depends on m_owner->m_page and
 182     // it should be called whenever it changes (wxWizard::ShowPage)
 183     if ( m_owner->m_page )
 184     {
 185         m_owner->m_page->SetSize(m_position.x,m_position.y, m_size.x,m_size.y);
 186     }
 187 }
 188
 189 wxSize wxWizardSizer::CalcMin()
 190 {
 191     return m_owner->GetPageSize();
 192 }
 193
 194 wxSize wxWizardSizer::GetMaxChildSize()
 195 {
 196 #if !defined(__WXDEBUG__)
 197     if ( m_childSizeValid )
 198         return m_childSize;
 199 #endif
 200
 201     wxSize maxOfMin;
 202     wxSizerItemList::compatibility_iterator childNode;
 203
 204     for(childNode = m_children.GetFirst(); childNode;
 205         childNode = childNode->GetNext())
 206     {
 207         wxSizerItem *child = childNode->GetData();
 208         maxOfMin.IncTo(child->CalcMin());
 209         maxOfMin.IncTo(SiblingSize(child));
 210     }
 211
 212 #ifdef __WXDEBUG__
 213     if ( m_childSizeValid && m_childSize != maxOfMin )
 214     {
 215         wxFAIL_MSG( _T("Size changed in wxWizard::GetPageAreaSizer()")
 216                     _T("after RunWizard().\n")
 217                     _T("Did you forget to call GetSizer()->Fit(this) ")
 218                     _T("for some page?")) ;
 219
 220         return m_childSize;
 221     }
 222 #endif // __WXDEBUG__
 223
 224     if ( m_owner->m_started )
 225     {
 226         m_childSizeValid = true;
 227         m_childSize = maxOfMin;
 228     }
 229
 230     return maxOfMin;
 231 }
 232
 233 int wxWizardSizer::Border() const
 234 {
 235     if ( m_owner->m_calledSetBorder )
 236         return m_owner->m_border;
 237
 238     return m_children.IsEmpty() ? 5 : 0;
 239 }
 240
 241 wxSize wxWizardSizer::SiblingSize(wxSizerItem *child)
 242 {
 243     wxSize maxSibling;
 244
 245     if ( child->IsWindow() )
 246     {
 247         wxWizardPage *page = wxDynamicCast(child->GetWindow(), wxWizardPage);
 248         if ( page )
 249         {
 250             for ( wxWizardPage *sibling = page->GetNext();
 251                   sibling;
 252                   sibling = sibling->GetNext() )
 253             {
 254                 if ( sibling->GetSizer() )
 255                 {
 256                     maxSibling.IncTo(sibling->GetSizer()->CalcMin());
 257                 }
 258             }
 259         }
 260     }
 261
 262     return maxSibling;
 263 }
 264
 265 // ----------------------------------------------------------------------------
 266 // generic wxWizard implementation
 267 // ----------------------------------------------------------------------------
 268
 269 void wxWizard::Init()
 270 {
 271     m_posWizard = wxDefaultPosition;
 272     m_page = (wxWizardPage *)NULL;
 273     m_btnPrev = m_btnNext = NULL;
 274     m_statbmp = NULL;
 275     m_sizerBmpAndPage = NULL;
 276     m_sizerPage = NULL;
 277     m_calledSetBorder = false;
 278     m_border = 0;
 279     m_started = false;
 280 }
 281
 282 bool wxWizard::Create(wxWindow *parent,
 283                       int id,
 284                       const wxString& title,
 285                       const wxBitmap& bitmap,
 286                       const wxPoint& pos,
 287                       long style)
 288 {
 289     bool result = wxDialog::Create(parent,id,title,pos,wxDefaultSize,style);
 290
 291     m_posWizard = pos;
 292     m_bitmap = bitmap ;
 293
 294     DoCreateControls();
 295
 296     return result;
 297 }
 298
 299 void wxWizard::AddBitmapRow(wxBoxSizer *mainColumn)
 300 {
 301     m_sizerBmpAndPage = new wxBoxSizer(wxHORIZONTAL);
 302     mainColumn->Add(
 303         m_sizerBmpAndPage,
 304         1, // Vertically stretchable
 305         wxEXPAND // Horizonal stretching, no border
 306     );
 307     mainColumn->Add(0,5,
 308         0, // No vertical stretching
 309         wxEXPAND // No border, (mostly useless) horizontal stretching
 310     );
 311
 312     if ( m_bitmap.Ok() )
 313     {
 314         m_statbmp = new wxStaticBitmap(this, -1, m_bitmap);
 315         m_sizerBmpAndPage->Add(
 316             m_statbmp,
 317             0, // No horizontal stretching
 318             wxALL, // Border all around, top alignment
 319             5 // Border width
 320         );
 321         m_sizerBmpAndPage->Add(
 322             5,0,
 323             0, // No horizontal stretching
 324             wxEXPAND // No border, (mostly useless) vertical stretching
 325         );
 326     }
 327
 328     // Added to m_sizerBmpAndPage in FinishLayout
 329     m_sizerPage = new wxWizardSizer(this);
 330 }
 331
 332 void wxWizard::AddStaticLine(wxBoxSizer *mainColumn)
 333 {
 334 #if wxUSE_STATLINE
 335     mainColumn->Add(
 336         new wxStaticLine(this, -1),
 337         0, // Vertically unstretchable
 338         wxEXPAND | wxALL, // Border all around, horizontally stretchable
 339         5 // Border width
 340     );
 341     mainColumn->Add(0,5,
 342         0, // No vertical stretching
 343         wxEXPAND // No border, (mostly useless) horizontal stretching
 344     );
 345 #else
 346     (void)mainColumn;
 347 #endif // wxUSE_STATLINE
 348 }
 349
 350 void wxWizard::AddBackNextPair(wxBoxSizer *buttonRow)
 351 {
 352     wxASSERT_MSG( m_btnNext && m_btnPrev,
 353                   _T("You must create the buttons before calling ")
 354                   _T("wxWizard::AddBackNextPair") );
 355
 356     // margin between Back and Next buttons
 357 #ifdef __WXMAC__
 358     static const int BACKNEXT_MARGIN = 10;
 359 #else
 360     static const int BACKNEXT_MARGIN = 0;
 361 #endif
 362
 363     wxBoxSizer *backNextPair = new wxBoxSizer(wxHORIZONTAL);
 364     buttonRow->Add(
 365         backNextPair,
 366         0, // No horizontal stretching
 367         wxALL, // Border all around
 368         5 // Border width
 369     );
 370
 371     backNextPair->Add(m_btnPrev);
 372     backNextPair->Add(BACKNEXT_MARGIN,0,
 373         0, // No horizontal stretching
 374         wxEXPAND // No border, (mostly useless) vertical stretching
 375     );
 376     backNextPair->Add(m_btnNext);
 377 }
 378
 379 void wxWizard::AddButtonRow(wxBoxSizer *mainColumn)
 380 {
 381     // the order in which the buttons are created determines the TAB order - at least under MSWindows...
 382     // although the 'back' button appears before the 'next' button, a more userfriendly tab order is
 383     // to activate the 'next' button first (create the next button before the back button).
 384     // The reason is: The user will repeatedly enter information in the wizard pages and then wants to
 385     // press 'next'. If a user uses mostly the keyboard, he would have to skip the 'back' button
 386     // everytime. This is annoying. There is a second reason: RETURN acts as TAB. If the 'next'
 387     // button comes first in the TAB order, the user can enter information very fast using the RETURN
 388     // key to TAB to the next entry field and page. This would not be possible, if the 'back' button
 389     // was created before the 'next' button.
 390
 391     wxBoxSizer *buttonRow = new wxBoxSizer(wxHORIZONTAL);
 392     mainColumn->Add(
 393         buttonRow,
 394         0, // Vertically unstretchable
 395         wxALIGN_RIGHT // Right aligned, no border
 396     );
 397
 398     // Desired TAB order is 'next', 'cancel', 'help', 'back'. This makes the 'back' button the last control on the page.
 399     // Create the buttons in the right order...
 400     m_btnNext = new wxButton(this, wxID_FORWARD, _("&Next >"));
 401     wxButton *btnCancel=new wxButton(this, wxID_CANCEL, _("&Cancel"));
 402     wxButton *btnHelp=0;
 403     if (GetExtraStyle() & wxWIZARD_EX_HELPBUTTON)
 404         btnHelp=new wxButton(this, wxID_HELP, _("&Help"));
 405     m_btnPrev = new wxButton(this, wxID_BACKWARD, _("< &Back"));
 406
 407     if (btnHelp)
 408         buttonRow->Add(
 409             btnHelp,
 410             0, // Horizontally unstretchable
 411             wxALL, // Border all around, top aligned
 412             5 // Border width
 413         );
 414
 415     AddBackNextPair(buttonRow);
 416
 417     buttonRow->Add(
 418         btnCancel,
 419         0, // Horizontally unstretchable
 420         wxALL, // Border all around, top aligned
 421         5 // Border width
 422     );
 423 }
 424
 425 void wxWizard::DoCreateControls()
 426 {
 427     // do nothing if the controls were already created
 428     if ( WasCreated() )
 429         return;
 430
 431     // wxWindow::SetSizer will be called at end
 432     wxBoxSizer *windowSizer = new wxBoxSizer(wxVERTICAL);
 433
 434     wxBoxSizer *mainColumn = new wxBoxSizer(wxVERTICAL);
 435     windowSizer->Add(
 436         mainColumn,
 437         1, // Vertical stretching
 438         wxALL | wxEXPAND, // Border all around, horizontal stretching
 439         5 // Border width
 440     );
 441
 442     AddBitmapRow(mainColumn);
 443     AddStaticLine(mainColumn);
 444     AddButtonRow(mainColumn);
 445
 446     // wxWindow::SetSizer should be followed by wxWindow::Fit, but
 447     // this is done in FinishLayout anyway so why duplicate it
 448     SetSizer(windowSizer);
 449 }
 450
 451 void wxWizard::SetPageSize(const wxSize& size)
 452 {
 453     wxCHECK_RET(!m_started,wxT("wxWizard::SetPageSize after RunWizard"));
 454     m_sizePage = size;
 455 }
 456
 457 void wxWizard::FinishLayout()
 458 {
 459     m_sizerBmpAndPage->Add(
 460         m_sizerPage,
 461         1, // Horizontal stretching
 462         wxEXPAND | wxALL, // Vertically stretchable
 463         m_sizerPage->Border()
 464     );
 465
 466     GetSizer()->SetSizeHints(this);
 467     if ( m_posWizard == wxDefaultPosition )
 468         CentreOnScreen();
 469 }
 470
 471 void wxWizard::FitToPage(const wxWizardPage *page)
 472 {
 473     wxCHECK_RET(!m_started,wxT("wxWizard::FitToPage after RunWizard"));
 474
 475     while ( page )
 476     {
 477         wxSize size = page->GetBestSize();
 478
 479         m_sizePage.IncTo(size);
 480
 481         page = page->GetNext();
 482     }
 483 }
 484
 485 bool wxWizard::ShowPage(wxWizardPage *page, bool goingForward)
 486 {
 487     wxASSERT_MSG( page != m_page, wxT("this is useless") );
 488
 489     // we'll use this to decide whether we have to change the label of this
 490     // button or not (initially the label is "Next")
 491     bool btnLabelWasNext = TRUE;
 492
 493     // Modified 10-20-2001 Robert Cavanaugh.
 494     // Fixed bug for displaying a new bitmap
 495     // in each *consecutive* page
 496
 497     // flag to indicate if this page uses a new bitmap
 498     bool bmpIsDefault = TRUE;
 499
 500     // use these labels to determine if we need to change the bitmap
 501     // for this page
 502     wxBitmap bmpPrev, bmpCur;
 503
 504     // check for previous page
 505     if ( m_page )
 506     {
 507         // send the event to the old page
 508         wxWizardEvent event(wxEVT_WIZARD_PAGE_CHANGING, GetId(), goingForward, m_page);
 509         if ( m_page->GetEventHandler()->ProcessEvent(event) &&
 510              !event.IsAllowed() )
 511         {
 512             // vetoed by the page
 513             return FALSE;
 514         }
 515
 516         m_page->Hide();
 517
 518         btnLabelWasNext = HasNextPage(m_page);
 519
 520         // Get the bitmap of the previous page (if it exists)
 521         if ( m_page->GetBitmap().Ok() )
 522         {
 523             bmpPrev = m_page->GetBitmap();
 524         }
 525     }
 526
 527     // set the new page
 528     m_page = page;
 529
 530     // is this the end?
 531     if ( !m_page )
 532     {
 533         // terminate successfully
 534         EndModal(wxID_OK);
 535
 536         // and notify the user code (this is especially useful for modeless
 537         // wizards)
 538         wxWizardEvent event(wxEVT_WIZARD_FINISHED, GetId(), FALSE, 0);
 539         (void)GetEventHandler()->ProcessEvent(event);
 540
 541         return TRUE;
 542     }
 543
 544     // position and show the new page
 545     (void)m_page->TransferDataToWindow();
 546
 547     // wxWizardSizer::RecalcSizes wants to be called when m_page changes
 548     m_sizerPage->RecalcSizes();
 549
 550     // check if bitmap needs to be updated
 551     // update default flag as well
 552     if ( m_page->GetBitmap().Ok() )
 553     {
 554         bmpCur = m_page->GetBitmap();
 555         bmpIsDefault = FALSE;
 556     }
 557
 558     // change the bitmap if:
 559     // 1) a default bitmap was selected in constructor
 560     // 2) this page was constructed with a bitmap
 561     // 3) this bitmap is not the previous bitmap
 562     if ( m_statbmp && (bmpCur != bmpPrev) )
 563     {
 564         wxBitmap bmp;
 565         if ( bmpIsDefault )
 566             bmp = m_bitmap;
 567         else
 568             bmp = m_page->GetBitmap();
 569         m_statbmp->SetBitmap(bmp);
 570     }
 571
 572     // and update the buttons state
 573     m_btnPrev->Enable(HasPrevPage(m_page));
 574
 575     bool hasNext = HasNextPage(m_page);
 576     if ( btnLabelWasNext != hasNext )
 577     {
 578         // need to update
 579         if (btnLabelWasNext)
 580             m_btnNext->SetLabel(_("&Finish"));
 581         else
 582             m_btnNext->SetLabel(_("&Next >"));
 583     }
 584     // nothing to do: the label was already correct
 585
 586     // send the change event to the new page now
 587     wxWizardEvent event(wxEVT_WIZARD_PAGE_CHANGED, GetId(), goingForward, m_page);
 588     (void)m_page->GetEventHandler()->ProcessEvent(event);
 589
 590     // and finally show it
 591     m_page->Show();
 592     m_page->SetFocus();
 593
 594     return TRUE;
 595 }
 596
 597 bool wxWizard::RunWizard(wxWizardPage *firstPage)
 598 {
 599     wxCHECK_MSG( firstPage, FALSE, wxT("can't run empty wizard") );
 600
 601     // Set before FinishLayout to enable wxWizardSizer::GetMaxChildSize
 602     m_started = true;
 603
 604     // This cannot be done sooner, because user can change layout options
 605     // up to this moment
 606     FinishLayout();
 607
 608     // can't return FALSE here because there is no old page
 609     (void)ShowPage(firstPage, TRUE /* forward */);
 610
 611     return ShowModal() == wxID_OK;
 612 }
 613
 614 wxWizardPage *wxWizard::GetCurrentPage() const
 615 {
 616     return m_page;
 617 }
 618
 619 wxSize wxWizard::GetPageSize() const
 620 {
 621     wxSize pageSize(GetManualPageSize());
 622     pageSize.IncTo(m_sizerPage->GetMaxChildSize());
 623     return pageSize;
 624 }
 625
 626 wxSizer *wxWizard::GetPageAreaSizer() const
 627 {
 628     return m_sizerPage;
 629 }
 630
 631 void wxWizard::SetBorder(int border)
 632 {
 633     wxCHECK_RET(!m_started,wxT("wxWizard::SetBorder after RunWizard"));
 634
 635     m_calledSetBorder = true;
 636     m_border = border;
 637 }
 638
 639 wxSize wxWizard::GetManualPageSize() const
 640 {
 641     // default width and height of the page
 642     static const int DEFAULT_PAGE_WIDTH = 270;
 643     static const int DEFAULT_PAGE_HEIGHT = 290;
 644
 645     wxSize totalPageSize(DEFAULT_PAGE_WIDTH,DEFAULT_PAGE_HEIGHT);
 646
 647     totalPageSize.IncTo(m_sizePage);
 648
 649     if ( m_statbmp )
 650     {
 651         totalPageSize.IncTo(wxSize(0, m_bitmap.GetHeight()));
 652     }
 653
 654     return totalPageSize;
 655 }
 656
 657 void wxWizard::OnCancel(wxCommandEvent& WXUNUSED(eventUnused))
 658 {
 659     // this function probably can never be called when we don't have an active
 660     // page, but a small extra check won't hurt
 661     wxWindow *win = m_page ? (wxWindow *)m_page : (wxWindow *)this;
 662
 663     wxWizardEvent event(wxEVT_WIZARD_CANCEL, GetId(), FALSE, m_page);
 664     if ( !win->GetEventHandler()->ProcessEvent(event) || event.IsAllowed() )
 665     {
 666         // no objections - close the dialog
 667         EndModal(wxID_CANCEL);
 668     }
 669     //else: request to Cancel ignored
 670 }
 671
 672 void wxWizard::OnBackOrNext(wxCommandEvent& event)
 673 {
 674     wxASSERT_MSG( (event.GetEventObject() == m_btnNext) ||
 675                   (event.GetEventObject() == m_btnPrev),
 676                   wxT("unknown button") );
 677
 678     // ask the current page first: notice that we do it before calling
 679     // GetNext/Prev() because the data transfered from the controls of the page
 680     // may change the value returned by these methods
 681     if ( m_page && (!m_page->Validate() || !m_page->TransferDataFromWindow()) )
 682     {
 683         // the page data is incorrect, don't do anything
 684         return;
 685     }
 686
 687     bool forward = event.GetEventObject() == m_btnNext;
 688
 689     wxWizardPage *page;
 690     if ( forward )
 691     {
 692         page = m_page->GetNext();
 693     }
 694     else // back
 695     {
 696         page = m_page->GetPrev();
 697
 698         wxASSERT_MSG( page, wxT("\"<Back\" button should have been disabled") );
 699     }
 700
 701     // just pass to the new page (or may be not - but we don't care here)
 702     (void)ShowPage(page, forward);
 703 }
 704
 705 void wxWizard::OnHelp(wxCommandEvent& WXUNUSED(event))
 706 {
 707     // this function probably can never be called when we don't have an active
 708     // page, but a small extra check won't hurt
 709     if(m_page != NULL)
 710     {
 711         // Create and send the help event to the specific page handler
 712         // event data contains the active page so that context-sensitive
 713         // help is possible
 714         wxWizardEvent eventHelp(wxEVT_WIZARD_HELP, GetId(), TRUE, m_page);
 715         (void)m_page->GetEventHandler()->ProcessEvent(eventHelp);
 716     }
 717 }
 718
 719 void wxWizard::OnWizEvent(wxWizardEvent& event)
 720 {
 721     // the dialogs have wxWS_EX_BLOCK_EVENTS style on by default but we want to
 722     // propagate wxEVT_WIZARD_XXX to the parent (if any), so do it manually
 723     if ( !(GetExtraStyle() & wxWS_EX_BLOCK_EVENTS) )
 724     {
 725         // the event will be propagated anyhow
 726         return;
 727     }
 728
 729     wxWindow *parent = GetParent();
 730
 731     if ( !parent || !parent->GetEventHandler()->ProcessEvent(event) )
 732     {
 733         event.Skip();
 734     }
 735 }
 736
 737 // ----------------------------------------------------------------------------
 738 // our public interface
 739 // ----------------------------------------------------------------------------
 740
 741 #if WXWIN_COMPATIBILITY_2_2
 742
 743 /* static */
 744 wxWizard *wxWizardBase::Create(wxWindow *parent,
 745                                int id,
 746                                const wxString& title,
 747                                const wxBitmap& bitmap,
 748                                const wxPoint& pos,
 749                                const wxSize& WXUNUSED(size))
 750 {
 751     return new wxWizard(parent, id, title, bitmap, pos);
 752 }
 753
 754 #endif // WXWIN_COMPATIBILITY_2_2
 755
 756 // ----------------------------------------------------------------------------
 757 // wxWizardEvent
 758 // ----------------------------------------------------------------------------
 759
 760 wxWizardEvent::wxWizardEvent(wxEventType type, int id, bool direction, wxWizardPage* page)
 761              : wxNotifyEvent(type, id)
 762 {
 763     // Modified 10-20-2001 Robert Cavanaugh
 764     // add the active page to the event data
 765     m_direction = direction;
 766     m_page = page;
 767 }
 768
 769 #endif // wxUSE_WIZARDDLG