src/common/dlgcmn.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/common/dlgcmn.cpp
   3 // Purpose:     common (to all ports) wxDialog functions
   4 // Author:      Vadim Zeitlin
   5 // Modified by:
   6 // Created:     28.06.99
   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 // For compilers that support precompilation, includes "wx.h".
  21 #include "wx/wxprec.h"
  22
  23 #ifdef __BORLANDC__
  24     #pragma hdrstop
  25 #endif
  26
  27 #include "wx/dialog.h"
  28
  29 #ifndef WX_PRECOMP
  30     #include "wx/app.h"
  31     #include "wx/button.h"
  32     #include "wx/dcclient.h"
  33     #include "wx/intl.h"
  34     #include "wx/settings.h"
  35     #include "wx/stattext.h"
  36     #include "wx/sizer.h"
  37     #include "wx/containr.h"
  38 #endif
  39
  40 #include "wx/statline.h"
  41 #include "wx/sysopt.h"
  42 #include "wx/module.h"
  43 #include "wx/private/stattext.h"
  44 #include "wx/bookctrl.h"
  45 #include "wx/scrolwin.h"
  46
  47 #if wxUSE_DISPLAY
  48 #include "wx/display.h"
  49 #endif
  50
  51 // ----------------------------------------------------------------------------
  52 // wxDialogBase
  53 // ----------------------------------------------------------------------------
  54
  55 BEGIN_EVENT_TABLE(wxDialogBase, wxTopLevelWindow)
  56     EVT_BUTTON(wxID_ANY, wxDialogBase::OnButton)
  57
  58     EVT_CLOSE(wxDialogBase::OnCloseWindow)
  59
  60     EVT_CHAR_HOOK(wxDialogBase::OnCharHook)
  61 END_EVENT_TABLE()
  62
  63 wxDialogLayoutAdapter* wxDialogBase::sm_layoutAdapter = NULL;
  64 bool wxDialogBase::sm_layoutAdaptation = false;
  65
  66 void wxDialogBase::Init()
  67 {
  68     m_returnCode = 0;
  69     m_affirmativeId = wxID_OK;
  70     m_escapeId = wxID_ANY;
  71     m_layoutAdaptationLevel = 3;
  72     m_layoutAdaptationDone = FALSE;
  73     m_layoutAdaptationMode = wxDIALOG_ADAPTATION_MODE_DEFAULT;
  74
  75     // the dialogs have this flag on by default to prevent the events from the
  76     // dialog controls from reaching the parent frame which is usually
  77     // undesirable and can lead to unexpected and hard to find bugs
  78     SetExtraStyle(GetExtraStyle() | wxWS_EX_BLOCK_EVENTS);
  79 }
  80
  81 wxWindow *wxDialogBase::CheckIfCanBeUsedAsParent(wxWindow *parent) const
  82 {
  83     if ( !parent )
  84         return NULL;
  85
  86     extern WXDLLIMPEXP_DATA_CORE(wxList) wxPendingDelete;
  87     if ( wxPendingDelete.Member(parent) || parent->IsBeingDeleted() )
  88     {
  89         // this window is being deleted and we shouldn't create any children
  90         // under it
  91         return NULL;
  92     }
  93
  94     if ( parent->HasExtraStyle(wxWS_EX_TRANSIENT) )
  95     {
  96         // this window is not being deleted yet but it's going to disappear
  97         // soon so still don't parent this window under it
  98         return NULL;
  99     }
 100
 101     if ( !parent->IsShownOnScreen() )
 102     {
 103         // using hidden parent won't work correctly neither
 104         return NULL;
 105     }
 106
 107     // FIXME-VC6: this compiler requires an explicit const cast or it fails
 108     //            with error C2446
 109     if ( const_cast<const wxWindow *>(parent) == this )
 110     {
 111         // not sure if this can really happen but it doesn't hurt to guard
 112         // against this clearly invalid situation
 113         return NULL;
 114     }
 115
 116     return parent;
 117 }
 118
 119 wxWindow *wxDialogBase::GetParentForModalDialog(wxWindow *parent) const
 120 {
 121     // creating a parent-less modal dialog will result (under e.g. wxGTK2)
 122     // in an unfocused dialog, so try to find a valid parent for it unless we
 123     // were explicitly asked not to
 124     if ( HasFlag(wxDIALOG_NO_PARENT) )
 125         return NULL;
 126
 127     // first try the given parent
 128     if ( parent )
 129         parent = CheckIfCanBeUsedAsParent(wxGetTopLevelParent(parent));
 130
 131     // then the currently active window
 132     if ( !parent )
 133         parent = CheckIfCanBeUsedAsParent(
 134                     wxGetTopLevelParent(wxGetActiveWindow()));
 135
 136     // and finally the application main window
 137     if ( !parent )
 138         parent = CheckIfCanBeUsedAsParent(wxTheApp->GetTopWindow());
 139
 140     return parent;
 141 }
 142
 143 #if wxUSE_STATTEXT
 144
 145 class wxTextSizerWrapper : public wxTextWrapper
 146 {
 147 public:
 148     wxTextSizerWrapper(wxWindow *win)
 149     {
 150         m_win = win;
 151         m_hLine = 0;
 152     }
 153
 154     wxSizer *CreateSizer(const wxString& text, int widthMax)
 155     {
 156         m_sizer = new wxBoxSizer(wxVERTICAL);
 157         Wrap(m_win, text, widthMax);
 158         return m_sizer;
 159     }
 160
 161 protected:
 162     virtual void OnOutputLine(const wxString& line)
 163     {
 164         if ( !line.empty() )
 165         {
 166             m_sizer->Add(new wxStaticText(m_win, wxID_ANY, line));
 167         }
 168         else // empty line, no need to create a control for it
 169         {
 170             if ( !m_hLine )
 171                 m_hLine = m_win->GetCharHeight();
 172
 173             m_sizer->Add(5, m_hLine);
 174         }
 175     }
 176
 177 private:
 178     wxWindow *m_win;
 179     wxSizer *m_sizer;
 180     int m_hLine;
 181 };
 182
 183 wxSizer *wxDialogBase::CreateTextSizer(const wxString& message)
 184 {
 185     // I admit that this is complete bogus, but it makes
 186     // message boxes work for pda screens temporarily..
 187     int widthMax = -1;
 188     const bool is_pda = wxSystemSettings::GetScreenType() <= wxSYS_SCREEN_PDA;
 189     if (is_pda)
 190     {
 191         widthMax = wxSystemSettings::GetMetric( wxSYS_SCREEN_X ) - 25;
 192     }
 193
 194     // '&' is used as accel mnemonic prefix in the wxWidgets controls but in
 195     // the static messages created by CreateTextSizer() (used by wxMessageBox,
 196     // for example), we don't want this special meaning, so we need to quote it
 197     wxString text(message);
 198     text.Replace(_T("&"), _T("&&"));
 199
 200     wxTextSizerWrapper wrapper(this);
 201
 202     return wrapper.CreateSizer(text, widthMax);
 203 }
 204
 205 #endif // wxUSE_STATTEXT
 206
 207 wxSizer *wxDialogBase::CreateButtonSizer(long flags)
 208 {
 209 #ifdef __SMARTPHONE__
 210     wxDialog* dialog = (wxDialog*) this;
 211     if ( flags & wxOK )
 212         dialog->SetLeftMenu(wxID_OK);
 213
 214     if ( flags & wxCANCEL )
 215         dialog->SetRightMenu(wxID_CANCEL);
 216
 217     if ( flags & wxYES )
 218         dialog->SetLeftMenu(wxID_YES);
 219
 220     if ( flags & wxNO )
 221         dialog->SetRightMenu(wxID_NO);
 222
 223     return NULL;
 224 #else // !__SMARTPHONE__
 225
 226 #if wxUSE_BUTTON
 227
 228 #ifdef __POCKETPC__
 229     // PocketPC guidelines recommend for Ok/Cancel dialogs to use OK button
 230     // located inside caption bar and implement Cancel functionality through
 231     // Undo outside dialog. As native behaviour this will be default here but
 232     // can be replaced with real wxButtons by setting the option below to 1
 233     if ( (flags & ~(wxCANCEL|wxNO_DEFAULT)) != wxOK ||
 234             wxSystemOptions::GetOptionInt(wxT("wince.dialog.real-ok-cancel")) )
 235 #endif // __POCKETPC__
 236     {
 237         return CreateStdDialogButtonSizer(flags);
 238     }
 239 #ifdef __POCKETPC__
 240     return NULL;
 241 #endif // __POCKETPC__
 242
 243 #else // !wxUSE_BUTTON
 244     wxUnusedVar(flags);
 245
 246     return NULL;
 247 #endif // wxUSE_BUTTON/!wxUSE_BUTTON
 248
 249 #endif // __SMARTPHONE__/!__SMARTPHONE__
 250 }
 251
 252 wxSizer *wxDialogBase::CreateSeparatedButtonSizer(long flags)
 253 {
 254     wxSizer *sizer = CreateButtonSizer(flags);
 255     if ( !sizer )
 256         return NULL;
 257
 258     // Mac Human Interface Guidelines recommend not to use static lines as
 259     // grouping elements
 260 #if wxUSE_STATLINE && !defined(__WXMAC__)
 261     wxBoxSizer *topsizer = new wxBoxSizer(wxVERTICAL);
 262     topsizer->Add(new wxStaticLine(this),
 263                    wxSizerFlags().Expand().DoubleBorder(wxBOTTOM));
 264     topsizer->Add(sizer, wxSizerFlags().Expand());
 265     sizer = topsizer;
 266 #endif // wxUSE_STATLINE
 267
 268     return sizer;
 269 }
 270
 271 #if wxUSE_BUTTON
 272
 273 wxStdDialogButtonSizer *wxDialogBase::CreateStdDialogButtonSizer( long flags )
 274 {
 275     wxStdDialogButtonSizer *sizer = new wxStdDialogButtonSizer();
 276
 277     wxButton *ok = NULL;
 278     wxButton *yes = NULL;
 279     wxButton *no = NULL;
 280
 281     if (flags & wxOK)
 282     {
 283         ok = new wxButton(this, wxID_OK);
 284         sizer->AddButton(ok);
 285     }
 286
 287     if (flags & wxCANCEL)
 288     {
 289         wxButton *cancel = new wxButton(this, wxID_CANCEL);
 290         sizer->AddButton(cancel);
 291     }
 292
 293     if (flags & wxYES)
 294     {
 295         yes = new wxButton(this, wxID_YES);
 296         sizer->AddButton(yes);
 297     }
 298
 299     if (flags & wxNO)
 300     {
 301         no = new wxButton(this, wxID_NO);
 302         sizer->AddButton(no);
 303     }
 304
 305     if (flags & wxAPPLY)
 306     {
 307         wxButton *apply = new wxButton(this, wxID_APPLY);
 308         sizer->AddButton(apply);
 309     }
 310
 311     if (flags & wxCLOSE)
 312     {
 313         wxButton *close = new wxButton(this, wxID_CLOSE);
 314         sizer->AddButton(close);
 315     }
 316
 317     if (flags & wxHELP)
 318     {
 319         wxButton *help = new wxButton(this, wxID_HELP);
 320         sizer->AddButton(help);
 321     }
 322
 323     if (flags & wxNO_DEFAULT)
 324     {
 325         if (no)
 326         {
 327             no->SetDefault();
 328             no->SetFocus();
 329         }
 330     }
 331     else
 332     {
 333         if (ok)
 334         {
 335             ok->SetDefault();
 336             ok->SetFocus();
 337         }
 338         else if (yes)
 339         {
 340             yes->SetDefault();
 341             yes->SetFocus();
 342         }
 343     }
 344
 345     if (flags & wxOK)
 346         SetAffirmativeId(wxID_OK);
 347     else if (flags & wxYES)
 348         SetAffirmativeId(wxID_YES);
 349
 350     sizer->Realize();
 351
 352     return sizer;
 353 }
 354
 355 #endif // wxUSE_BUTTON
 356
 357 // ----------------------------------------------------------------------------
 358 // standard buttons handling
 359 // ----------------------------------------------------------------------------
 360
 361 void wxDialogBase::EndDialog(int rc)
 362 {
 363     if ( IsModal() )
 364         EndModal(rc);
 365     else
 366         Hide();
 367 }
 368
 369 void wxDialogBase::AcceptAndClose()
 370 {
 371     if ( Validate() && TransferDataFromWindow() )
 372     {
 373         EndDialog(m_affirmativeId);
 374     }
 375 }
 376
 377 void wxDialogBase::SetAffirmativeId(int affirmativeId)
 378 {
 379     m_affirmativeId = affirmativeId;
 380 }
 381
 382 void wxDialogBase::SetEscapeId(int escapeId)
 383 {
 384     m_escapeId = escapeId;
 385 }
 386
 387 bool wxDialogBase::EmulateButtonClickIfPresent(int id)
 388 {
 389 #if wxUSE_BUTTON
 390     wxButton *btn = wxDynamicCast(FindWindow(id), wxButton);
 391
 392     if ( !btn || !btn->IsEnabled() || !btn->IsShown() )
 393         return false;
 394
 395     wxCommandEvent event(wxEVT_COMMAND_BUTTON_CLICKED, id);
 396     event.SetEventObject(btn);
 397     btn->GetEventHandler()->ProcessEvent(event);
 398
 399     return true;
 400 #else // !wxUSE_BUTTON
 401     wxUnusedVar(id);
 402     return false;
 403 #endif // wxUSE_BUTTON/!wxUSE_BUTTON
 404 }
 405
 406 bool wxDialogBase::IsEscapeKey(const wxKeyEvent& event)
 407 {
 408     // for most platforms, Esc key is used to close the dialogs
 409     return event.GetKeyCode() == WXK_ESCAPE &&
 410                 event.GetModifiers() == wxMOD_NONE;
 411 }
 412
 413 void wxDialogBase::OnCharHook(wxKeyEvent& event)
 414 {
 415     if ( event.GetKeyCode() == WXK_ESCAPE )
 416     {
 417         int idCancel = GetEscapeId();
 418         switch ( idCancel )
 419         {
 420             case wxID_NONE:
 421                 // don't handle Esc specially at all
 422                 break;
 423
 424             case wxID_ANY:
 425                 // this value is special: it means translate Esc to wxID_CANCEL
 426                 // but if there is no such button, then fall back to wxID_OK
 427                 if ( EmulateButtonClickIfPresent(wxID_CANCEL) )
 428                     return;
 429                 idCancel = GetAffirmativeId();
 430                 // fall through
 431
 432             default:
 433                 // translate Esc to button press for the button with given id
 434                 if ( EmulateButtonClickIfPresent(idCancel) )
 435                     return;
 436         }
 437     }
 438
 439     event.Skip();
 440 }
 441
 442 void wxDialogBase::OnButton(wxCommandEvent& event)
 443 {
 444     const int id = event.GetId();
 445     if ( id == GetAffirmativeId() )
 446     {
 447         AcceptAndClose();
 448     }
 449     else if ( id == wxID_APPLY )
 450     {
 451         if ( Validate() )
 452             TransferDataFromWindow();
 453
 454         // TODO: disable the Apply button until things change again
 455     }
 456     else if ( id == GetEscapeId() ||
 457                 (id == wxID_CANCEL && GetEscapeId() == wxID_ANY) )
 458     {
 459         EndDialog(wxID_CANCEL);
 460     }
 461     else // not a standard button
 462     {
 463         event.Skip();
 464     }
 465 }
 466
 467 // ----------------------------------------------------------------------------
 468 // other event handlers
 469 // ----------------------------------------------------------------------------
 470
 471 void wxDialogBase::OnCloseWindow(wxCloseEvent& WXUNUSED(event))
 472 {
 473     // We'll send a Cancel message by default, which may close the dialog.
 474     // Check for looping if the Cancel event handler calls Close().
 475
 476     // Note that if a cancel button and handler aren't present in the dialog,
 477     // nothing will happen when you close the dialog via the window manager, or
 478     // via Close(). We wouldn't want to destroy the dialog by default, since
 479     // the dialog may have been created on the stack. However, this does mean
 480     // that calling dialog->Close() won't delete the dialog unless the handler
 481     // for wxID_CANCEL does so. So use Destroy() if you want to be sure to
 482     // destroy the dialog. The default OnCancel (above) simply ends a modal
 483     // dialog, and hides a modeless dialog.
 484
 485     int idCancel = GetEscapeId();
 486     if ( idCancel == wxID_NONE )
 487         return;
 488     if ( idCancel == wxID_ANY )
 489         idCancel = wxID_CANCEL;
 490
 491     // VZ: this is horrible and MT-unsafe. Can't we reuse some of these global
 492     //     lists here? don't dare to change it now, but should be done later!
 493     static wxList closing;
 494
 495     if ( closing.Member(this) )
 496         return;
 497
 498     closing.Append(this);
 499
 500     wxCommandEvent cancelEvent(wxEVT_COMMAND_BUTTON_CLICKED, idCancel);
 501     cancelEvent.SetEventObject( this );
 502     GetEventHandler()->ProcessEvent(cancelEvent); // This may close the dialog
 503
 504     closing.DeleteObject(this);
 505 }
 506
 507 void wxDialogBase::OnSysColourChanged(wxSysColourChangedEvent& event)
 508 {
 509 #ifndef __WXGTK__
 510     SetBackgroundColour(wxSystemSettings::GetColour(wxSYS_COLOUR_3DFACE));
 511     Refresh();
 512 #endif
 513
 514     event.Skip();
 515 }
 516
 517 /// Do the adaptation
 518 bool wxDialogBase::DoLayoutAdaptation()
 519 {
 520     if (GetLayoutAdapter())
 521     {
 522         wxWindow* focusWindow = wxFindFocusDescendant(this); // from event.h
 523         if (GetLayoutAdapter()->DoLayoutAdaptation((wxDialog*) this))
 524         {
 525             if (focusWindow)
 526                 focusWindow->SetFocus();
 527             return true;
 528         }
 529         else
 530             return false;
 531     }
 532     else
 533         return false;
 534 }
 535
 536 /// Can we do the adaptation?
 537 bool wxDialogBase::CanDoLayoutAdaptation()
 538 {
 539     // Check if local setting overrides the global setting
 540     bool layoutEnabled = (GetLayoutAdaptationMode() == wxDIALOG_ADAPTATION_MODE_ENABLED) || (IsLayoutAdaptationEnabled() && (GetLayoutAdaptationMode() != wxDIALOG_ADAPTATION_MODE_DISABLED));
 541
 542     return (layoutEnabled && !m_layoutAdaptationDone && GetLayoutAdaptationLevel() != 0 && GetLayoutAdapter() != NULL && GetLayoutAdapter()->CanDoLayoutAdaptation((wxDialog*) this));
 543 }
 544
 545 /// Set scrolling adapter class, returning old adapter
 546 wxDialogLayoutAdapter* wxDialogBase::SetLayoutAdapter(wxDialogLayoutAdapter* adapter)
 547 {
 548     wxDialogLayoutAdapter* oldLayoutAdapter = sm_layoutAdapter;
 549     sm_layoutAdapter = adapter;
 550     return oldLayoutAdapter;
 551 }
 552
 553 /*!
 554  * Standard adapter
 555  */
 556
 557 IMPLEMENT_CLASS(wxDialogLayoutAdapter, wxObject)
 558
 559 IMPLEMENT_CLASS(wxStandardDialogLayoutAdapter, wxDialogLayoutAdapter)
 560
 561 // Allow for caption size on wxWidgets < 2.9
 562 #if defined(__WXGTK__) && !wxCHECK_VERSION(2,9,0)
 563 #define wxEXTRA_DIALOG_HEIGHT 30
 564 #else
 565 #define wxEXTRA_DIALOG_HEIGHT 0
 566 #endif
 567
 568 /// Indicate that adaptation should be done
 569 bool wxStandardDialogLayoutAdapter::CanDoLayoutAdaptation(wxDialog* dialog)
 570 {
 571     if (dialog->GetSizer())
 572     {
 573         wxSize windowSize, displaySize;
 574         return MustScroll(dialog, windowSize, displaySize) != 0;
 575     }
 576     else
 577         return false;
 578 }
 579
 580 bool wxStandardDialogLayoutAdapter::DoLayoutAdaptation(wxDialog* dialog)
 581 {
 582     if (dialog->GetSizer())
 583     {
 584 #if wxUSE_BOOKCTRL
 585         wxBookCtrlBase* bookContentWindow = wxDynamicCast(dialog->GetContentWindow(), wxBookCtrlBase);
 586
 587         if (bookContentWindow)
 588         {
 589             // If we have a book control, make all the pages (that use sizers) scrollable
 590             wxWindowList windows;
 591             for (size_t i = 0; i < bookContentWindow->GetPageCount(); i++)
 592             {
 593                 wxWindow* page = bookContentWindow->GetPage(i);
 594
 595                 wxScrolledWindow* scrolledWindow = wxDynamicCast(page, wxScrolledWindow);
 596                 if (scrolledWindow)
 597                     windows.Append(scrolledWindow);
 598                 else if (!scrolledWindow && page->GetSizer())
 599                 {
 600                     // Create a scrolled window and reparent
 601                     scrolledWindow = CreateScrolledWindow(page);
 602                     wxSizer* oldSizer = page->GetSizer();
 603
 604                     wxSizer* newSizer = new wxBoxSizer(wxVERTICAL);
 605                     newSizer->Add(scrolledWindow,1, wxEXPAND, 0);
 606
 607                     page->SetSizer(newSizer, false /* don't delete the old sizer */);
 608
 609                     scrolledWindow->SetSizer(oldSizer);
 610
 611                     ReparentControls(page, scrolledWindow);
 612
 613                     windows.Append(scrolledWindow);
 614                 }
 615             }
 616
 617             FitWithScrolling(dialog, windows);
 618         }
 619         else
 620 #endif // wxUSE_BOOKCTRL
 621         {
 622             // If we have an arbitrary dialog, create a scrolling area for the main content, and a button sizer
 623             // for the main buttons.
 624             wxScrolledWindow* scrolledWindow = CreateScrolledWindow(dialog);
 625
 626             int buttonSizerBorder = 0;
 627
 628             // First try to find a wxStdDialogButtonSizer
 629             wxSizer* buttonSizer = FindButtonSizer(true /* find std button sizer */, dialog, dialog->GetSizer(), buttonSizerBorder);
 630
 631             // Next try to find a wxBoxSizer containing the controls
 632             if (!buttonSizer && dialog->GetLayoutAdaptationLevel() > wxDIALOG_ADAPTATION_STANDARD_SIZER)
 633                 buttonSizer = FindButtonSizer(false /* find ordinary sizer */, dialog, dialog->GetSizer(), buttonSizerBorder);
 634
 635             // If we still don't have a button sizer, collect any 'loose' buttons in the layout
 636             if (!buttonSizer && dialog->GetLayoutAdaptationLevel() > wxDIALOG_ADAPTATION_ANY_SIZER)
 637             {
 638                 int count = 0;
 639                 wxStdDialogButtonSizer* stdButtonSizer = new wxStdDialogButtonSizer;
 640                 buttonSizer = stdButtonSizer;
 641
 642                 FindLooseButtons(dialog, stdButtonSizer, dialog->GetSizer(), count);
 643                 if (count > 0)
 644                     stdButtonSizer->Realize();
 645                 else
 646                 {
 647                     delete buttonSizer;
 648                     buttonSizer = NULL;
 649                 }
 650             }
 651
 652             if (buttonSizerBorder == 0)
 653                 buttonSizerBorder = 5;
 654
 655             ReparentControls(dialog, scrolledWindow, buttonSizer);
 656
 657             wxBoxSizer* newTopSizer = new wxBoxSizer(wxVERTICAL);
 658             wxSizer* oldSizer = dialog->GetSizer();
 659
 660             dialog->SetSizer(newTopSizer, false /* don't delete old sizer */);
 661
 662             newTopSizer->Add(scrolledWindow, 1, wxEXPAND|wxALL, 0);
 663             if (buttonSizer)
 664                 newTopSizer->Add(buttonSizer, 0, wxEXPAND|wxALL, buttonSizerBorder);
 665
 666             scrolledWindow->SetSizer(oldSizer);
 667
 668             FitWithScrolling(dialog, scrolledWindow);
 669         }
 670     }
 671
 672     dialog->SetLayoutAdaptationDone(true);
 673     return true;
 674 }
 675
 676 // Create the scrolled window
 677 wxScrolledWindow* wxStandardDialogLayoutAdapter::CreateScrolledWindow(wxWindow* parent)
 678 {
 679     wxScrolledWindow* scrolledWindow = new wxScrolledWindow(parent, wxID_ANY, wxDefaultPosition, wxDefaultSize, wxTAB_TRAVERSAL|wxVSCROLL|wxHSCROLL|wxBORDER_NONE);
 680     return scrolledWindow;
 681 }
 682
 683 /// Find and remove the button sizer, if any
 684 wxSizer* wxStandardDialogLayoutAdapter::FindButtonSizer(bool stdButtonSizer, wxDialog* dialog, wxSizer* sizer, int& retBorder, int accumlatedBorder)
 685 {
 686     for ( wxSizerItemList::compatibility_iterator node = sizer->GetChildren().GetFirst();
 687           node; node = node->GetNext() )
 688     {
 689         wxSizerItem *item = node->GetData();
 690         wxSizer *childSizer = item->GetSizer();
 691
 692         if ( childSizer )
 693         {
 694             int newBorder = accumlatedBorder;
 695             if (item->GetFlag() & wxALL)
 696                 newBorder += item->GetBorder();
 697
 698             if (stdButtonSizer) // find wxStdDialogButtonSizer
 699             {
 700                 wxStdDialogButtonSizer* buttonSizer = wxDynamicCast(childSizer, wxStdDialogButtonSizer);
 701                 if (buttonSizer)
 702                 {
 703                     sizer->Detach(childSizer);
 704                     retBorder = newBorder;
 705                     return buttonSizer;
 706                 }
 707             }
 708             else // find a horizontal box sizer containing standard buttons
 709             {
 710                 wxBoxSizer* buttonSizer = wxDynamicCast(childSizer, wxBoxSizer);
 711                 if (buttonSizer && IsOrdinaryButtonSizer(dialog, buttonSizer))
 712                 {
 713                     sizer->Detach(childSizer);
 714                     retBorder = newBorder;
 715                     return buttonSizer;
 716                 }
 717             }
 718
 719             wxSizer* s = FindButtonSizer(stdButtonSizer, dialog, childSizer, retBorder, newBorder);
 720             if (s)
 721                 return s;
 722         }
 723     }
 724     return NULL;
 725 }
 726
 727 /// Check if this sizer contains standard buttons, and so can be repositioned in the dialog
 728 bool wxStandardDialogLayoutAdapter::IsOrdinaryButtonSizer(wxDialog* dialog, wxBoxSizer* sizer)
 729 {
 730     if (sizer->GetOrientation() != wxHORIZONTAL)
 731         return false;
 732
 733     for ( wxSizerItemList::compatibility_iterator node = sizer->GetChildren().GetFirst();
 734           node; node = node->GetNext() )
 735     {
 736         wxSizerItem *item = node->GetData();
 737         wxButton *childButton = wxDynamicCast(item->GetWindow(), wxButton);
 738
 739         if (childButton && IsStandardButton(dialog, childButton))
 740             return true;
 741     }
 742     return false;
 743 }
 744
 745 /// Check if this is a standard button
 746 bool wxStandardDialogLayoutAdapter::IsStandardButton(wxDialog* dialog, wxButton* button)
 747 {
 748     wxWindowID id = button->GetId();
 749
 750     return (id == wxID_OK || id == wxID_CANCEL || id == wxID_YES || id == wxID_NO || id == wxID_SAVE ||
 751             id == wxID_APPLY || id == wxID_HELP || id == wxID_CONTEXT_HELP || dialog->IsMainButtonId(id));
 752 }
 753
 754 /// Find 'loose' main buttons in the existing layout and add them to the standard dialog sizer
 755 bool wxStandardDialogLayoutAdapter::FindLooseButtons(wxDialog* dialog, wxStdDialogButtonSizer* buttonSizer, wxSizer* sizer, int& count)
 756 {
 757     wxSizerItemList::compatibility_iterator node = sizer->GetChildren().GetFirst();
 758     while (node)
 759     {
 760         wxSizerItemList::compatibility_iterator next = node->GetNext();
 761         wxSizerItem *item = node->GetData();
 762         wxSizer *childSizer = item->GetSizer();
 763         wxButton *childButton = wxDynamicCast(item->GetWindow(), wxButton);
 764
 765         if (childButton && IsStandardButton(dialog, childButton))
 766         {
 767             sizer->Detach(childButton);
 768             buttonSizer->AddButton(childButton);
 769             count ++;
 770         }
 771
 772         if (childSizer)
 773             FindLooseButtons(dialog, buttonSizer, childSizer, count);
 774
 775         node = next;
 776     }
 777     return true;
 778 }
 779
 780 /// Reparent the controls to the scrolled window
 781 void wxStandardDialogLayoutAdapter::ReparentControls(wxWindow* parent, wxWindow* reparentTo, wxSizer* buttonSizer)
 782 {
 783     DoReparentControls(parent, reparentTo, buttonSizer);
 784 }
 785
 786 void wxStandardDialogLayoutAdapter::DoReparentControls(wxWindow* parent, wxWindow* reparentTo, wxSizer* buttonSizer)
 787 {
 788     wxWindowList::compatibility_iterator node = parent->GetChildren().GetFirst();
 789     while (node)
 790     {
 791         wxWindowList::compatibility_iterator next = node->GetNext();
 792
 793         wxWindow *win = node->GetData();
 794
 795         // Don't reparent the scrolled window or buttons in the button sizer
 796         if (win != reparentTo && (!buttonSizer || !buttonSizer->GetItem(win)))
 797         {
 798             win->Reparent(reparentTo);
 799 #ifdef __WXMSW__
 800             // Restore correct tab order
 801             ::SetWindowPos((HWND) win->GetHWND(), HWND_BOTTOM, -1, -1, -1, -1, SWP_NOMOVE|SWP_NOSIZE);
 802 #endif
 803         }
 804
 805         node = next;
 806     }
 807 }
 808
 809 /// Find whether scrolling will be necessary for the dialog, returning wxVERTICAL, wxHORIZONTAL or both
 810 int wxStandardDialogLayoutAdapter::MustScroll(wxDialog* dialog, wxSize& windowSize, wxSize& displaySize)
 811 {
 812     return DoMustScroll(dialog, windowSize, displaySize);
 813 }
 814
 815 /// Find whether scrolling will be necessary for the dialog, returning wxVERTICAL, wxHORIZONTAL or both
 816 int wxStandardDialogLayoutAdapter::DoMustScroll(wxDialog* dialog, wxSize& windowSize, wxSize& displaySize)
 817 {
 818     wxSize minWindowSize = dialog->GetSizer()->GetMinSize();
 819     windowSize = dialog->GetSize();
 820     windowSize = wxSize(wxMax(windowSize.x, minWindowSize.x), wxMax(windowSize.y, minWindowSize.y));
 821 #if wxUSE_DISPLAY
 822     displaySize = wxDisplay(wxDisplay::GetFromWindow(dialog)).GetClientArea().GetSize();
 823 #else
 824     displaySize = wxGetClientDisplayRect().GetSize();
 825 #endif
 826
 827     int flags = 0;
 828
 829     if (windowSize.y >= (displaySize.y - wxEXTRA_DIALOG_HEIGHT))
 830         flags |= wxVERTICAL;
 831     if (windowSize.x >= displaySize.x)
 832         flags |= wxHORIZONTAL;
 833
 834     return flags;
 835 }
 836
 837 // A function to fit the dialog around its contents, and then adjust for screen size.
 838 // If scrolled windows are passed, scrolling is enabled in the required orientation(s).
 839 bool wxStandardDialogLayoutAdapter::FitWithScrolling(wxDialog* dialog, wxWindowList& windows)
 840 {
 841     return DoFitWithScrolling(dialog, windows);
 842 }
 843
 844 // A function to fit the dialog around its contents, and then adjust for screen size.
 845 // If a scrolled window is passed, scrolling is enabled in the required orientation(s).
 846 bool wxStandardDialogLayoutAdapter::FitWithScrolling(wxDialog* dialog, wxScrolledWindow* scrolledWindow)
 847 {
 848     return DoFitWithScrolling(dialog, scrolledWindow);
 849 }
 850
 851 // A function to fit the dialog around its contents, and then adjust for screen size.
 852 // If a scrolled window is passed, scrolling is enabled in the required orientation(s).
 853 bool wxStandardDialogLayoutAdapter::DoFitWithScrolling(wxDialog* dialog, wxScrolledWindow* scrolledWindow)
 854 {
 855     wxWindowList windows;
 856     windows.Append(scrolledWindow);
 857     return DoFitWithScrolling(dialog, windows);
 858 }
 859
 860 bool wxStandardDialogLayoutAdapter::DoFitWithScrolling(wxDialog* dialog, wxWindowList& windows)
 861 {
 862     wxSizer* sizer = dialog->GetSizer();
 863     if (!sizer)
 864         return false;
 865
 866     sizer->SetSizeHints(dialog);
 867
 868     wxSize windowSize, displaySize;
 869     int scrollFlags = DoMustScroll(dialog, windowSize, displaySize);
 870     int scrollBarSize = 20;
 871
 872     if (scrollFlags)
 873     {
 874         int scrollBarExtraX = 0, scrollBarExtraY = 0;
 875         bool resizeHorizontally = (scrollFlags & wxHORIZONTAL) != 0;
 876         bool resizeVertically = (scrollFlags & wxVERTICAL) != 0;
 877
 878         if (windows.GetCount() != 0)
 879         {
 880             // Allow extra for a scrollbar, assuming we resizing in one direction only.
 881             if ((resizeVertically && !resizeHorizontally) && (windowSize.x < (displaySize.x - scrollBarSize)))
 882                 scrollBarExtraX = scrollBarSize;
 883             if ((resizeHorizontally && !resizeVertically) && (windowSize.y < (displaySize.y - scrollBarSize)))
 884                 scrollBarExtraY = scrollBarSize;
 885         }
 886
 887         wxWindowList::compatibility_iterator node = windows.GetFirst();
 888         while (node)
 889         {
 890             wxWindow *win = node->GetData();
 891             wxScrolledWindow* scrolledWindow = wxDynamicCast(win, wxScrolledWindow);
 892             if (scrolledWindow)
 893             {
 894                 scrolledWindow->SetScrollRate(resizeHorizontally ? 10 : 0, resizeVertically ? 10 : 0);
 895
 896                 if (scrolledWindow->GetSizer())
 897                     scrolledWindow->GetSizer()->Fit(scrolledWindow);
 898             }
 899
 900             node = node->GetNext();
 901         }
 902
 903         wxSize limitTo = windowSize + wxSize(scrollBarExtraX, scrollBarExtraY);
 904         if (resizeVertically)
 905             limitTo.y = displaySize.y - wxEXTRA_DIALOG_HEIGHT;
 906         if (resizeHorizontally)
 907             limitTo.x = displaySize.x;
 908
 909         dialog->SetMinSize(limitTo);
 910         dialog->SetSize(limitTo);
 911
 912         dialog->SetSizeHints( limitTo.x, limitTo.y, dialog->GetMaxWidth(), dialog->GetMaxHeight() );
 913     }
 914
 915     return true;
 916 }
 917
 918 /*!
 919  * Module to initialise standard adapter
 920  */
 921
 922 class wxDialogLayoutAdapterModule: public wxModule
 923 {
 924     DECLARE_DYNAMIC_CLASS(wxDialogLayoutAdapterModule)
 925 public:
 926     wxDialogLayoutAdapterModule() {}
 927     virtual void OnExit() { delete wxDialogBase::SetLayoutAdapter(NULL); }
 928     virtual bool OnInit() { wxDialogBase::SetLayoutAdapter(new wxStandardDialogLayoutAdapter); return true; }
 929 };
 930
 931 IMPLEMENT_DYNAMIC_CLASS(wxDialogLayoutAdapterModule, wxModule)