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 #include "wx/settings.h"
  47
  48 #include "wx/wizard.h"
  49
  50 // ----------------------------------------------------------------------------
  51 // wxWizardSizer
  52 // ----------------------------------------------------------------------------
  53
  54 class wxWizardSizer : public wxSizer
  55 {
  56 public:
  57     wxWizardSizer(wxWizard *owner);
  58
  59     void RecalcSizes();
  60     wxSize CalcMin();
  61
  62     wxSize GetMaxChildSize();
  63     int Border() const;
  64
  65 private:
  66     wxSize SiblingSize(wxSizerItem *child);
  67
  68     wxWizard *m_owner;
  69     bool m_childSizeValid;
  70     wxSize m_childSize;
  71 };
  72
  73 // ----------------------------------------------------------------------------
  74 // event tables and such
  75 // ----------------------------------------------------------------------------
  76
  77 DEFINE_EVENT_TYPE(wxEVT_WIZARD_PAGE_CHANGED)
  78 DEFINE_EVENT_TYPE(wxEVT_WIZARD_PAGE_CHANGING)
  79 DEFINE_EVENT_TYPE(wxEVT_WIZARD_CANCEL)
  80 DEFINE_EVENT_TYPE(wxEVT_WIZARD_FINISHED)
  81 DEFINE_EVENT_TYPE(wxEVT_WIZARD_HELP)
  82
  83 BEGIN_EVENT_TABLE(wxWizard, wxDialog)
  84     EVT_BUTTON(wxID_CANCEL, wxWizard::OnCancel)
  85     EVT_BUTTON(wxID_BACKWARD, wxWizard::OnBackOrNext)
  86     EVT_BUTTON(wxID_FORWARD, wxWizard::OnBackOrNext)
  87     EVT_BUTTON(wxID_HELP, wxWizard::OnHelp)
  88
  89     EVT_WIZARD_PAGE_CHANGED(wxID_ANY, wxWizard::OnWizEvent)
  90     EVT_WIZARD_PAGE_CHANGING(wxID_ANY, wxWizard::OnWizEvent)
  91     EVT_WIZARD_CANCEL(wxID_ANY, wxWizard::OnWizEvent)
  92     EVT_WIZARD_FINISHED(wxID_ANY, wxWizard::OnWizEvent)
  93     EVT_WIZARD_HELP(wxID_ANY, wxWizard::OnWizEvent)
  94 END_EVENT_TABLE()
  95
  96 IMPLEMENT_DYNAMIC_CLASS(wxWizard, wxDialog)
  97
  98 /*
  99     TODO PROPERTIES :
 100     wxWizard
 101         extstyle
 102         title
 103 */
 104
 105 IMPLEMENT_ABSTRACT_CLASS(wxWizardPage, wxPanel)
 106 IMPLEMENT_DYNAMIC_CLASS(wxWizardPageSimple, wxWizardPage)
 107 IMPLEMENT_DYNAMIC_CLASS(wxWizardEvent, wxNotifyEvent)
 108
 109 // ============================================================================
 110 // implementation
 111 // ============================================================================
 112
 113 // ----------------------------------------------------------------------------
 114 // wxWizardPage
 115 // ----------------------------------------------------------------------------
 116
 117 void wxWizardPage::Init()
 118 {
 119     m_bitmap = wxNullBitmap;
 120 }
 121
 122 wxWizardPage::wxWizardPage(wxWizard *parent,
 123                            const wxBitmap& bitmap,
 124                            const wxChar *resource)
 125 {
 126     Create(parent, bitmap, resource);
 127 }
 128
 129 bool wxWizardPage::Create(wxWizard *parent,
 130                           const wxBitmap& bitmap,
 131                           const wxChar *resource)
 132 {
 133     if ( !wxPanel::Create(parent, wxID_ANY) )
 134         return false;
 135
 136     if ( resource != NULL )
 137     {
 138 #if wxUSE_WX_RESOURCES
 139 #if 0
 140        if ( !LoadFromResource(this, resource) )
 141         {
 142             wxFAIL_MSG(wxT("wxWizardPage LoadFromResource failed!!!!"));
 143         }
 144 #endif
 145 #endif // wxUSE_RESOURCES
 146     }
 147
 148     m_bitmap = bitmap;
 149
 150     // initially the page is hidden, it's shown only when it becomes current
 151     Hide();
 152
 153     return true;
 154 }
 155
 156 // ----------------------------------------------------------------------------
 157 // wxWizardPageSimple
 158 // ----------------------------------------------------------------------------
 159
 160 wxWizardPage *wxWizardPageSimple::GetPrev() const
 161 {
 162     return m_prev;
 163 }
 164
 165 wxWizardPage *wxWizardPageSimple::GetNext() const
 166 {
 167     return m_next;
 168 }
 169
 170 // ----------------------------------------------------------------------------
 171 // wxWizardSizer
 172 // ----------------------------------------------------------------------------
 173
 174 wxWizardSizer::wxWizardSizer(wxWizard *owner)
 175     : m_owner(owner)
 176 {
 177     m_childSizeValid = false;
 178 }
 179
 180 void wxWizardSizer::RecalcSizes()
 181 {
 182     // Effect of this function depends on m_owner->m_page and
 183     // it should be called whenever it changes (wxWizard::ShowPage)
 184     if ( m_owner->m_page )
 185     {
 186         m_owner->m_page->SetSize(m_position.x,m_position.y, m_size.x,m_size.y);
 187     }
 188 }
 189
 190 wxSize wxWizardSizer::CalcMin()
 191 {
 192     return m_owner->GetPageSize();
 193 }
 194
 195 wxSize wxWizardSizer::GetMaxChildSize()
 196 {
 197 #if !defined(__WXDEBUG__)
 198     if ( m_childSizeValid )
 199         return m_childSize;
 200 #endif
 201
 202     wxSize maxOfMin;
 203     wxSizerItemList::compatibility_iterator childNode;
 204
 205     for(childNode = m_children.GetFirst(); childNode;
 206         childNode = childNode->GetNext())
 207     {
 208         wxSizerItem *child = childNode->GetData();
 209         maxOfMin.IncTo(child->CalcMin());
 210         maxOfMin.IncTo(SiblingSize(child));
 211     }
 212
 213 #ifdef __WXDEBUG__
 214     if ( m_childSizeValid && m_childSize != maxOfMin )
 215     {
 216         wxFAIL_MSG( _T("Size changed in wxWizard::GetPageAreaSizer()")
 217                     _T("after RunWizard().\n")
 218                     _T("Did you forget to call GetSizer()->Fit(this) ")
 219                     _T("for some page?")) ;
 220
 221         return m_childSize;
 222     }
 223 #endif // __WXDEBUG__
 224
 225     if ( m_owner->m_started )
 226     {
 227         m_childSizeValid = true;
 228         m_childSize = maxOfMin;
 229     }
 230
 231     return maxOfMin;
 232 }
 233
 234 int wxWizardSizer::Border() const
 235 {
 236     if ( m_owner->m_calledSetBorder )
 237         return m_owner->m_border;
 238
 239     return m_children.IsEmpty() ? 5 : 0;
 240 }
 241
 242 wxSize wxWizardSizer::SiblingSize(wxSizerItem *child)
 243 {
 244     wxSize maxSibling;
 245
 246     if ( child->IsWindow() )
 247     {
 248         wxWizardPage *page = wxDynamicCast(child->GetWindow(), wxWizardPage);
 249         if ( page )
 250         {
 251             for ( wxWizardPage *sibling = page->GetNext();
 252                   sibling;
 253                   sibling = sibling->GetNext() )
 254             {
 255                 if ( sibling->GetSizer() )
 256                 {
 257                     maxSibling.IncTo(sibling->GetSizer()->CalcMin());
 258                 }
 259             }
 260         }
 261     }
 262
 263     return maxSibling;
 264 }
 265
 266 // ----------------------------------------------------------------------------
 267 // generic wxWizard implementation
 268 // ----------------------------------------------------------------------------
 269
 270 void wxWizard::Init()
 271 {
 272     m_posWizard = wxDefaultPosition;
 273     m_page = (wxWizardPage *)NULL;
 274     m_btnPrev = m_btnNext = NULL;
 275     m_statbmp = NULL;
 276     m_sizerBmpAndPage = NULL;
 277     m_sizerPage = NULL;
 278     m_calledSetBorder = false;
 279     m_border = 0;
 280     m_started = false;
 281 }
 282
 283 bool wxWizard::Create(wxWindow *parent,
 284                       int id,
 285                       const wxString& title,
 286                       const wxBitmap& bitmap,
 287                       const wxPoint& pos,
 288                       long style)
 289 {
 290     bool result = wxDialog::Create(parent,id,title,pos,wxDefaultSize,style);
 291
 292     m_posWizard = pos;
 293     m_bitmap = bitmap ;
 294
 295     DoCreateControls();
 296
 297     return result;
 298 }
 299
 300 void wxWizard::AddBitmapRow(wxBoxSizer *mainColumn)
 301 {
 302     m_sizerBmpAndPage = new wxBoxSizer(wxHORIZONTAL);
 303     mainColumn->Add(
 304         m_sizerBmpAndPage,
 305         1, // Vertically stretchable
 306         wxEXPAND // Horizonal stretching, no border
 307     );
 308     mainColumn->Add(0,5,
 309         0, // No vertical stretching
 310         wxEXPAND // No border, (mostly useless) horizontal stretching
 311     );
 312
 313 #if wxUSE_STATBMP
 314     if ( m_bitmap.Ok() )
 315     {
 316         m_statbmp = new wxStaticBitmap(this, wxID_ANY, m_bitmap);
 317         m_sizerBmpAndPage->Add(
 318             m_statbmp,
 319             0, // No horizontal stretching
 320             wxALL, // Border all around, top alignment
 321             5 // Border width
 322         );
 323         m_sizerBmpAndPage->Add(
 324             5,0,
 325             0, // No horizontal stretching
 326             wxEXPAND // No border, (mostly useless) vertical stretching
 327         );
 328     }
 329 #endif
 330
 331     // Added to m_sizerBmpAndPage in FinishLayout
 332     m_sizerPage = new wxWizardSizer(this);
 333 }
 334
 335 void wxWizard::AddStaticLine(wxBoxSizer *mainColumn)
 336 {
 337 #if wxUSE_STATLINE
 338     mainColumn->Add(
 339         new wxStaticLine(this, wxID_ANY),
 340         0, // Vertically unstretchable
 341         wxEXPAND | wxALL, // Border all around, horizontally stretchable
 342         5 // Border width
 343     );
 344     mainColumn->Add(0,5,
 345         0, // No vertical stretching
 346         wxEXPAND // No border, (mostly useless) horizontal stretching
 347     );
 348 #else
 349     (void)mainColumn;
 350 #endif // wxUSE_STATLINE
 351 }
 352
 353 void wxWizard::AddBackNextPair(wxBoxSizer *buttonRow)
 354 {
 355     wxASSERT_MSG( m_btnNext && m_btnPrev,
 356                   _T("You must create the buttons before calling ")
 357                   _T("wxWizard::AddBackNextPair") );
 358
 359     // margin between Back and Next buttons
 360 #ifdef __WXMAC__
 361     static const int BACKNEXT_MARGIN = 10;
 362 #else
 363     static const int BACKNEXT_MARGIN = 0;
 364 #endif
 365
 366     wxBoxSizer *backNextPair = new wxBoxSizer(wxHORIZONTAL);
 367     buttonRow->Add(
 368         backNextPair,
 369         0, // No horizontal stretching
 370         wxALL, // Border all around
 371         5 // Border width
 372     );
 373
 374     backNextPair->Add(m_btnPrev);
 375     backNextPair->Add(BACKNEXT_MARGIN,0,
 376         0, // No horizontal stretching
 377         wxEXPAND // No border, (mostly useless) vertical stretching
 378     );
 379     backNextPair->Add(m_btnNext);
 380 }
 381
 382 void wxWizard::AddButtonRow(wxBoxSizer *mainColumn)
 383 {
 384     // the order in which the buttons are created determines the TAB order - at least under MSWindows...
 385     // although the 'back' button appears before the 'next' button, a more userfriendly tab order is
 386     // to activate the 'next' button first (create the next button before the back button).
 387     // The reason is: The user will repeatedly enter information in the wizard pages and then wants to
 388     // press 'next'. If a user uses mostly the keyboard, he would have to skip the 'back' button
 389     // everytime. This is annoying. There is a second reason: RETURN acts as TAB. If the 'next'
 390     // button comes first in the TAB order, the user can enter information very fast using the RETURN
 391     // key to TAB to the next entry field and page. This would not be possible, if the 'back' button
 392     // was created before the 'next' button.
 393
 394     bool isPda = (wxSystemSettings::GetScreenType() <= wxSYS_SCREEN_PDA);
 395     int buttonStyle = isPda ? wxBU_EXACTFIT : 0;
 396
 397     wxBoxSizer *buttonRow = new wxBoxSizer(wxHORIZONTAL);
 398 #ifdef __WXMAC__
 399     if (GetExtraStyle() & wxWIZARD_EX_HELPBUTTON)
 400         mainColumn->Add(
 401             buttonRow,
 402             0, // Vertically unstretchable
 403             wxGROW|wxALIGN_CENTRE
 404             );
 405     else
 406 #endif
 407     mainColumn->Add(
 408         buttonRow,
 409         0, // Vertically unstretchable
 410         wxALIGN_RIGHT // Right aligned, no border
 411     );
 412
 413     // Desired TAB order is 'next', 'cancel', 'help', 'back'. This makes the 'back' button the last control on the page.
 414     // Create the buttons in the right order...
 415     wxButton *btnHelp=0;
 416 #ifdef __WXMAC__
 417     if (GetExtraStyle() & wxWIZARD_EX_HELPBUTTON)
 418         btnHelp=new wxButton(this, wxID_HELP, _("&Help"), wxDefaultPosition, wxDefaultSize, buttonStyle);
 419 #endif
 420
 421     m_btnNext = new wxButton(this, wxID_FORWARD, _("&Next >"));
 422     wxButton *btnCancel=new wxButton(this, wxID_CANCEL, _("&Cancel"), wxDefaultPosition, wxDefaultSize, buttonStyle);
 423 #ifndef __WXMAC__
 424     if (GetExtraStyle() & wxWIZARD_EX_HELPBUTTON)
 425         btnHelp=new wxButton(this, wxID_HELP, _("&Help"), wxDefaultPosition, wxDefaultSize, buttonStyle);
 426 #endif
 427     m_btnPrev = new wxButton(this, wxID_BACKWARD, _("< &Back"), wxDefaultPosition, wxDefaultSize, buttonStyle);
 428
 429     if (btnHelp)
 430     {
 431         buttonRow->Add(
 432             btnHelp,
 433             0, // Horizontally unstretchable
 434             wxALL, // Border all around, top aligned
 435             5 // Border width
 436             );
 437 #ifdef __WXMAC__
 438         // Put stretchable space between help button and others
 439         buttonRow->Add(0, 0, 1, wxALIGN_CENTRE, 0);
 440 #endif
 441     }
 442
 443     AddBackNextPair(buttonRow);
 444
 445     buttonRow->Add(
 446         btnCancel,
 447         0, // Horizontally unstretchable
 448         wxALL, // Border all around, top aligned
 449         5 // Border width
 450     );
 451 }
 452
 453 void wxWizard::DoCreateControls()
 454 {
 455     // do nothing if the controls were already created
 456     if ( WasCreated() )
 457         return;
 458
 459     bool isPda = (wxSystemSettings::GetScreenType() <= wxSYS_SCREEN_PDA);
 460
 461     // Horizontal stretching, and if not PDA, border all around
 462     int mainColumnSizerFlags = isPda ? wxEXPAND : wxALL|wxEXPAND ;
 463
 464     // wxWindow::SetSizer will be called at end
 465     wxBoxSizer *windowSizer = new wxBoxSizer(wxVERTICAL);
 466
 467     wxBoxSizer *mainColumn = new wxBoxSizer(wxVERTICAL);
 468     windowSizer->Add(
 469         mainColumn,
 470         1, // Vertical stretching
 471         mainColumnSizerFlags,
 472         5 // Border width
 473     );
 474
 475     AddBitmapRow(mainColumn);
 476
 477     if (!isPda)
 478         AddStaticLine(mainColumn);
 479
 480     AddButtonRow(mainColumn);
 481
 482     // wxWindow::SetSizer should be followed by wxWindow::Fit, but
 483     // this is done in FinishLayout anyway so why duplicate it
 484     SetSizer(windowSizer);
 485 }
 486
 487 void wxWizard::SetPageSize(const wxSize& size)
 488 {
 489     wxCHECK_RET(!m_started,wxT("wxWizard::SetPageSize after RunWizard"));
 490     m_sizePage = size;
 491 }
 492
 493 void wxWizard::FinishLayout()
 494 {
 495     bool isPda = (wxSystemSettings::GetScreenType() <= wxSYS_SCREEN_PDA);
 496
 497     // Set to enable wxWizardSizer::GetMaxChildSize
 498     m_started = true;
 499
 500     m_sizerBmpAndPage->Add(
 501         m_sizerPage,
 502         1, // Horizontal stretching
 503         wxEXPAND | wxALL, // Vertically stretchable
 504         m_sizerPage->Border()
 505     );
 506
 507     if (!isPda)
 508     {
 509         GetSizer()->SetSizeHints(this);
 510         if ( m_posWizard == wxDefaultPosition )
 511             CentreOnScreen();
 512     }
 513 }
 514
 515 void wxWizard::FitToPage(const wxWizardPage *page)
 516 {
 517     wxCHECK_RET(!m_started,wxT("wxWizard::FitToPage after RunWizard"));
 518
 519     while ( page )
 520     {
 521         wxSize size = page->GetBestSize();
 522
 523         m_sizePage.IncTo(size);
 524
 525         page = page->GetNext();
 526     }
 527 }
 528
 529 bool wxWizard::ShowPage(wxWizardPage *page, bool goingForward)
 530 {
 531     wxASSERT_MSG( page != m_page, wxT("this is useless") );
 532
 533     // we'll use this to decide whether we have to change the label of this
 534     // button or not (initially the label is "Next")
 535     bool btnLabelWasNext = true;
 536
 537     // Modified 10-20-2001 Robert Cavanaugh.
 538     // Fixed bug for displaying a new bitmap
 539     // in each *consecutive* page
 540
 541     // flag to indicate if this page uses a new bitmap
 542     bool bmpIsDefault = true;
 543
 544     // use these labels to determine if we need to change the bitmap
 545     // for this page
 546     wxBitmap bmpPrev, bmpCur;
 547
 548     // check for previous page
 549     if ( m_page )
 550     {
 551         // send the event to the old page
 552         wxWizardEvent event(wxEVT_WIZARD_PAGE_CHANGING, GetId(), goingForward, m_page);
 553         if ( m_page->GetEventHandler()->ProcessEvent(event) &&
 554              !event.IsAllowed() )
 555         {
 556             // vetoed by the page
 557             return false;
 558         }
 559
 560         m_page->Hide();
 561
 562         btnLabelWasNext = HasNextPage(m_page);
 563
 564         // Get the bitmap of the previous page (if it exists)
 565         if ( m_page->GetBitmap().Ok() )
 566         {
 567             bmpPrev = m_page->GetBitmap();
 568         }
 569     }
 570
 571     // set the new page
 572     m_page = page;
 573
 574     // is this the end?
 575     if ( !m_page )
 576     {
 577         // terminate successfully
 578         if(IsModal())
 579         {
 580             EndModal(wxID_OK);
 581         }
 582         else
 583         {
 584             SetReturnCode(wxID_OK);
 585             Hide();
 586         }
 587
 588         // and notify the user code (this is especially useful for modeless
 589         // wizards)
 590         wxWizardEvent event(wxEVT_WIZARD_FINISHED, GetId(), false, 0);
 591         (void)GetEventHandler()->ProcessEvent(event);
 592
 593         return true;
 594     }
 595
 596     // position and show the new page
 597     (void)m_page->TransferDataToWindow();
 598
 599     // wxWizardSizer::RecalcSizes wants to be called when m_page changes
 600     m_sizerPage->RecalcSizes();
 601
 602     // check if bitmap needs to be updated
 603     // update default flag as well
 604     if ( m_page->GetBitmap().Ok() )
 605     {
 606         bmpCur = m_page->GetBitmap();
 607         bmpIsDefault = false;
 608     }
 609
 610 #if wxUSE_STATBMP
 611     // change the bitmap if:
 612     // 1) a default bitmap was selected in constructor
 613     // 2) this page was constructed with a bitmap
 614     // 3) this bitmap is not the previous bitmap
 615     if ( m_statbmp && (bmpCur != bmpPrev) )
 616     {
 617         wxBitmap bmp;
 618         if ( bmpIsDefault )
 619             bmp = m_bitmap;
 620         else
 621             bmp = m_page->GetBitmap();
 622         m_statbmp->SetBitmap(bmp);
 623     }
 624 #endif
 625
 626     // and update the buttons state
 627     m_btnPrev->Enable(HasPrevPage(m_page));
 628
 629     bool hasNext = HasNextPage(m_page);
 630     if ( btnLabelWasNext != hasNext )
 631     {
 632         // need to update
 633         if (btnLabelWasNext)
 634             m_btnNext->SetLabel(_("&Finish"));
 635         else
 636             m_btnNext->SetLabel(_("&Next >"));
 637     }
 638     m_btnNext->SetDefault();
 639     // nothing to do: the label was already correct
 640
 641     // send the change event to the new page now
 642     wxWizardEvent event(wxEVT_WIZARD_PAGE_CHANGED, GetId(), goingForward, m_page);
 643     (void)m_page->GetEventHandler()->ProcessEvent(event);
 644
 645     // and finally show it
 646     m_page->Show();
 647     m_page->SetFocus();
 648
 649     return true;
 650 }
 651
 652 bool wxWizard::RunWizard(wxWizardPage *firstPage)
 653 {
 654     wxCHECK_MSG( firstPage, false, wxT("can't run empty wizard") );
 655
 656     // This cannot be done sooner, because user can change layout options
 657     // up to this moment
 658     FinishLayout();
 659
 660     // can't return false here because there is no old page
 661     (void)ShowPage(firstPage, true /* forward */);
 662
 663     return ShowModal() == wxID_OK;
 664 }
 665
 666 wxWizardPage *wxWizard::GetCurrentPage() const
 667 {
 668     return m_page;
 669 }
 670
 671 wxSize wxWizard::GetPageSize() const
 672 {
 673     wxSize pageSize(GetManualPageSize());
 674     pageSize.IncTo(m_sizerPage->GetMaxChildSize());
 675     return pageSize;
 676 }
 677
 678 wxSizer *wxWizard::GetPageAreaSizer() const
 679 {
 680     return m_sizerPage;
 681 }
 682
 683 void wxWizard::SetBorder(int border)
 684 {
 685     wxCHECK_RET(!m_started,wxT("wxWizard::SetBorder after RunWizard"));
 686
 687     m_calledSetBorder = true;
 688     m_border = border;
 689 }
 690
 691 wxSize wxWizard::GetManualPageSize() const
 692 {
 693     // default width and height of the page
 694     int DEFAULT_PAGE_WIDTH = 270;
 695     int DEFAULT_PAGE_HEIGHT = 270;
 696     bool isPda = (wxSystemSettings::GetScreenType() <= wxSYS_SCREEN_PDA);
 697     if (isPda)
 698     {
 699         // Make the default page size small enough to fit on screen
 700         DEFAULT_PAGE_WIDTH = wxSystemSettings::GetMetric(wxSYS_SCREEN_X) / 2;
 701         DEFAULT_PAGE_HEIGHT = wxSystemSettings::GetMetric(wxSYS_SCREEN_Y) / 2;
 702     }
 703
 704     wxSize totalPageSize(DEFAULT_PAGE_WIDTH,DEFAULT_PAGE_HEIGHT);
 705
 706     totalPageSize.IncTo(m_sizePage);
 707
 708     if ( m_statbmp )
 709     {
 710         totalPageSize.IncTo(wxSize(0, m_bitmap.GetHeight()));
 711     }
 712
 713     return totalPageSize;
 714 }
 715
 716 void wxWizard::OnCancel(wxCommandEvent& WXUNUSED(eventUnused))
 717 {
 718     // this function probably can never be called when we don't have an active
 719     // page, but a small extra check won't hurt
 720     wxWindow *win = m_page ? (wxWindow *)m_page : (wxWindow *)this;
 721
 722     wxWizardEvent event(wxEVT_WIZARD_CANCEL, GetId(), false, m_page);
 723     if ( !win->GetEventHandler()->ProcessEvent(event) || event.IsAllowed() )
 724     {
 725         // no objections - close the dialog
 726         if(IsModal())
 727         {
 728             EndModal(wxID_CANCEL);
 729         }
 730         else
 731         {
 732             SetReturnCode(wxID_CANCEL);
 733             Hide();
 734         }
 735     }
 736     //else: request to Cancel ignored
 737 }
 738
 739 void wxWizard::OnBackOrNext(wxCommandEvent& event)
 740 {
 741     wxASSERT_MSG( (event.GetEventObject() == m_btnNext) ||
 742                   (event.GetEventObject() == m_btnPrev),
 743                   wxT("unknown button") );
 744
 745     // ask the current page first: notice that we do it before calling
 746     // GetNext/Prev() because the data transfered from the controls of the page
 747     // may change the value returned by these methods
 748     if ( m_page && (!m_page->Validate() || !m_page->TransferDataFromWindow()) )
 749     {
 750         // the page data is incorrect, don't do anything
 751         return;
 752     }
 753
 754     bool forward = event.GetEventObject() == m_btnNext;
 755
 756     wxWizardPage *page;
 757     if ( forward )
 758     {
 759         page = m_page->GetNext();
 760     }
 761     else // back
 762     {
 763         page = m_page->GetPrev();
 764
 765         wxASSERT_MSG( page, wxT("\"<Back\" button should have been disabled") );
 766     }
 767
 768     // just pass to the new page (or may be not - but we don't care here)
 769     (void)ShowPage(page, forward);
 770 }
 771
 772 void wxWizard::OnHelp(wxCommandEvent& WXUNUSED(event))
 773 {
 774     // this function probably can never be called when we don't have an active
 775     // page, but a small extra check won't hurt
 776     if(m_page != NULL)
 777     {
 778         // Create and send the help event to the specific page handler
 779         // event data contains the active page so that context-sensitive
 780         // help is possible
 781         wxWizardEvent eventHelp(wxEVT_WIZARD_HELP, GetId(), true, m_page);
 782         (void)m_page->GetEventHandler()->ProcessEvent(eventHelp);
 783     }
 784 }
 785
 786 void wxWizard::OnWizEvent(wxWizardEvent& event)
 787 {
 788     // the dialogs have wxWS_EX_BLOCK_EVENTS style on by default but we want to
 789     // propagate wxEVT_WIZARD_XXX to the parent (if any), so do it manually
 790     if ( !(GetExtraStyle() & wxWS_EX_BLOCK_EVENTS) )
 791     {
 792         // the event will be propagated anyhow
 793         event.Skip();
 794     }
 795     else
 796     {
 797         wxWindow *parent = GetParent();
 798
 799         if ( !parent || !parent->GetEventHandler()->ProcessEvent(event) )
 800         {
 801             event.Skip();
 802         }
 803     }
 804 }
 805
 806 // ----------------------------------------------------------------------------
 807 // our public interface
 808 // ----------------------------------------------------------------------------
 809
 810 #if WXWIN_COMPATIBILITY_2_2
 811
 812 /* static */
 813 wxWizard *wxWizardBase::Create(wxWindow *parent,
 814                                int id,
 815                                const wxString& title,
 816                                const wxBitmap& bitmap,
 817                                const wxPoint& pos,
 818                                const wxSize& WXUNUSED(size))
 819 {
 820     return new wxWizard(parent, id, title, bitmap, pos);
 821 }
 822
 823 #endif // WXWIN_COMPATIBILITY_2_2
 824
 825 // ----------------------------------------------------------------------------
 826 // wxWizardEvent
 827 // ----------------------------------------------------------------------------
 828
 829 wxWizardEvent::wxWizardEvent(wxEventType type, int id, bool direction, wxWizardPage* page)
 830              : wxNotifyEvent(type, id)
 831 {
 832     // Modified 10-20-2001 Robert Cavanaugh
 833     // add the active page to the event data
 834     m_direction = direction;
 835     m_page = page;
 836 }
 837
 838 #endif // wxUSE_WIZARDDLG