src/msw/dialog.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/msw/dialog.cpp
   3 // Purpose:     wxDialog class
   4 // Author:      Julian Smart
   5 // Modified by:
   6 // Created:     01/02/97
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Julian Smart
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 // ============================================================================
  13 // declarations
  14 // ============================================================================
  15
  16 // ----------------------------------------------------------------------------
  17 // headers
  18 // ----------------------------------------------------------------------------
  19
  20 #if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
  21     #pragma implementation "dialog.h"
  22 #endif
  23
  24 // For compilers that support precompilation, includes "wx.h".
  25 #include "wx/wxprec.h"
  26
  27 #ifdef __BORLANDC__
  28     #pragma hdrstop
  29 #endif
  30
  31 #ifndef WX_PRECOMP
  32     #include "wx/dialog.h"
  33     #include "wx/utils.h"
  34     #include "wx/frame.h"
  35     #include "wx/app.h"
  36     #include "wx/settings.h"
  37     #include "wx/intl.h"
  38     #include "wx/log.h"
  39 #endif
  40
  41 #include "wx/msw/private.h"
  42 #include "wx/log.h"
  43 #include "wx/evtloop.h"
  44 #include "wx/ptr_scpd.h"
  45
  46 #if wxUSE_COMMON_DIALOGS && !defined(__WXMICROWIN__)
  47     #include <commdlg.h>
  48 #endif
  49
  50 #ifdef __SMARTPHONE__
  51     #include "wx/msw/wince/resources.h"
  52 #endif // __SMARTPHONE__
  53
  54 // ----------------------------------------------------------------------------
  55 // wxWin macros
  56 // ----------------------------------------------------------------------------
  57
  58 #if wxUSE_EXTENDED_RTTI
  59 WX_DEFINE_FLAGS( wxDialogStyle )
  60
  61 wxBEGIN_FLAGS( wxDialogStyle )
  62     // new style border flags, we put them first to
  63     // use them for streaming out
  64     wxFLAGS_MEMBER(wxBORDER_SIMPLE)
  65     wxFLAGS_MEMBER(wxBORDER_SUNKEN)
  66     wxFLAGS_MEMBER(wxBORDER_DOUBLE)
  67     wxFLAGS_MEMBER(wxBORDER_RAISED)
  68     wxFLAGS_MEMBER(wxBORDER_STATIC)
  69     wxFLAGS_MEMBER(wxBORDER_NONE)
  70
  71     // old style border flags
  72     wxFLAGS_MEMBER(wxSIMPLE_BORDER)
  73     wxFLAGS_MEMBER(wxSUNKEN_BORDER)
  74     wxFLAGS_MEMBER(wxDOUBLE_BORDER)
  75     wxFLAGS_MEMBER(wxRAISED_BORDER)
  76     wxFLAGS_MEMBER(wxSTATIC_BORDER)
  77     wxFLAGS_MEMBER(wxNO_BORDER)
  78
  79     // standard window styles
  80     wxFLAGS_MEMBER(wxTAB_TRAVERSAL)
  81     wxFLAGS_MEMBER(wxCLIP_CHILDREN)
  82
  83     // dialog styles
  84     wxFLAGS_MEMBER(wxWS_EX_VALIDATE_RECURSIVELY)
  85     wxFLAGS_MEMBER(wxSTAY_ON_TOP)
  86     wxFLAGS_MEMBER(wxCAPTION)
  87     wxFLAGS_MEMBER(wxTHICK_FRAME)
  88     wxFLAGS_MEMBER(wxSYSTEM_MENU)
  89     wxFLAGS_MEMBER(wxRESIZE_BORDER)
  90     wxFLAGS_MEMBER(wxRESIZE_BOX)
  91     wxFLAGS_MEMBER(wxCLOSE_BOX)
  92     wxFLAGS_MEMBER(wxMAXIMIZE_BOX)
  93     wxFLAGS_MEMBER(wxMINIMIZE_BOX)
  94 wxEND_FLAGS( wxDialogStyle )
  95
  96 IMPLEMENT_DYNAMIC_CLASS_XTI(wxDialog, wxTopLevelWindow,"wx/dialog.h")
  97
  98 wxBEGIN_PROPERTIES_TABLE(wxDialog)
  99     wxPROPERTY( Title, wxString, SetTitle, GetTitle, wxString() , 0 /*flags*/ , wxT("Helpstring") , wxT("group"))
 100     wxPROPERTY_FLAGS( WindowStyle , wxDialogStyle , long , SetWindowStyleFlag , GetWindowStyleFlag , EMPTY_MACROVALUE , 0 /*flags*/ , wxT("Helpstring") , wxT("group")) // style
 101 wxEND_PROPERTIES_TABLE()
 102
 103 wxBEGIN_HANDLERS_TABLE(wxDialog)
 104 wxEND_HANDLERS_TABLE()
 105
 106 wxCONSTRUCTOR_6( wxDialog , wxWindow* , Parent , wxWindowID , Id , wxString , Title , wxPoint , Position , wxSize , Size , long , WindowStyle)
 107
 108 #else
 109 IMPLEMENT_DYNAMIC_CLASS(wxDialog, wxTopLevelWindow)
 110 #endif
 111
 112 BEGIN_EVENT_TABLE(wxDialog, wxDialogBase)
 113     EVT_BUTTON(wxID_OK, wxDialog::OnOK)
 114     EVT_BUTTON(wxID_APPLY, wxDialog::OnApply)
 115     EVT_BUTTON(wxID_CANCEL, wxDialog::OnCancel)
 116
 117     EVT_SYS_COLOUR_CHANGED(wxDialog::OnSysColourChanged)
 118
 119     EVT_CLOSE(wxDialog::OnCloseWindow)
 120 END_EVENT_TABLE()
 121
 122 // ----------------------------------------------------------------------------
 123 // wxDialogModalData
 124 // ----------------------------------------------------------------------------
 125
 126 // this is simply a container for any data we need to implement modality which
 127 // allows us to avoid changing wxDialog each time the implementation changes
 128 class wxDialogModalData
 129 {
 130 public:
 131     wxDialogModalData(wxDialog *dialog) : m_evtLoop(dialog) { }
 132
 133     void RunLoop()
 134     {
 135         m_evtLoop.Run();
 136     }
 137
 138     void ExitLoop()
 139     {
 140         m_evtLoop.Exit();
 141     }
 142
 143 private:
 144     wxModalEventLoop m_evtLoop;
 145 };
 146
 147 wxDEFINE_TIED_SCOPED_PTR_TYPE(wxDialogModalData);
 148
 149 // ============================================================================
 150 // implementation
 151 // ============================================================================
 152
 153 // ----------------------------------------------------------------------------
 154 // wxDialog construction
 155 // ----------------------------------------------------------------------------
 156
 157 void wxDialog::Init()
 158 {
 159     m_oldFocus = (wxWindow *)NULL;
 160     m_isShown = false;
 161     m_modalData = NULL;
 162     m_endModalCalled = false;
 163 }
 164
 165 bool wxDialog::Create(wxWindow *parent,
 166                       wxWindowID id,
 167                       const wxString& title,
 168                       const wxPoint& pos,
 169                       const wxSize& size,
 170                       long style,
 171                       const wxString& name)
 172 {
 173     SetExtraStyle(GetExtraStyle() | wxTOPLEVEL_EX_DIALOG);
 174
 175     // save focus before doing anything which can potentially change it
 176     m_oldFocus = FindFocus();
 177
 178     // All dialogs should really have this style
 179     style |= wxTAB_TRAVERSAL;
 180
 181     if ( !wxTopLevelWindow::Create(parent, id, title, pos, size, style, name) )
 182         return false;
 183
 184     if ( !m_hasFont )
 185         SetFont(wxSystemSettings::GetFont(wxSYS_DEFAULT_GUI_FONT));
 186
 187     SetBackgroundColour(wxSystemSettings::GetColour(wxSYS_COLOUR_3DFACE));
 188
 189 #ifdef __SMARTPHONE__
 190     SetLeftMenu(wxID_OK, _("OK"));
 191 #endif
 192
 193     return true;
 194 }
 195
 196 // deprecated ctor
 197 wxDialog::wxDialog(wxWindow *parent,
 198                    const wxString& title,
 199                    bool WXUNUSED(modal),
 200                    int x,
 201                    int y,
 202                    int w,
 203                    int h,
 204                    long style,
 205                    const wxString& name)
 206 {
 207     Init();
 208
 209     Create(parent, wxID_ANY, title, wxPoint(x, y), wxSize(w, h), style, name);
 210 }
 211
 212 void wxDialog::SetModal(bool WXUNUSED(flag))
 213 {
 214     // nothing to do, obsolete method
 215 }
 216
 217 wxDialog::~wxDialog()
 218 {
 219     m_isBeingDeleted = true;
 220
 221     // this will also reenable all the other windows for a modal dialog
 222     Show(false);
 223 }
 224
 225 // ----------------------------------------------------------------------------
 226 // showing the dialogs
 227 // ----------------------------------------------------------------------------
 228
 229 bool wxDialog::IsModalShowing() const
 230 {
 231     return IsModal();
 232 }
 233
 234 wxWindow *wxDialog::FindSuitableParent() const
 235 {
 236     // first try to use the currently active window
 237     HWND hwndFg = ::GetForegroundWindow();
 238     wxWindow *parent = hwndFg ? wxFindWinFromHandle((WXHWND)hwndFg)
 239                               : NULL;
 240     if ( !parent )
 241     {
 242         // next try the main app window
 243         parent = wxTheApp->GetTopWindow();
 244     }
 245
 246     // finally, check if the parent we found is really suitable
 247     if ( !parent || parent == (wxWindow *)this || !parent->IsShown() )
 248     {
 249         // don't use this one
 250         parent = NULL;
 251     }
 252
 253     return parent;
 254 }
 255
 256 bool wxDialog::Show(bool show)
 257 {
 258     if ( show == IsShown() )
 259         return false;
 260
 261     if ( !show && m_modalData )
 262     {
 263         // we need to do this before calling wxDialogBase version because if we
 264         // had disabled other app windows, they must be reenabled right now as
 265         // if they stay disabled Windows will activate another window (one
 266         // which is enabled, anyhow) when we're hidden in the base class Show()
 267         // and we will lose activation
 268         m_modalData->ExitLoop();
 269     }
 270
 271     if ( show )
 272     {
 273         // this usually will result in TransferDataToWindow() being called
 274         // which will change the controls values so do it before showing as
 275         // otherwise we could have some flicker
 276         InitDialog();
 277     }
 278
 279     wxDialogBase::Show(show);
 280
 281     if ( show )
 282     {
 283         // dialogs don't get WM_SIZE message after creation unlike most (all?)
 284         // other windows and so could start their life non laid out correctly
 285         // if we didn't call Layout() from here
 286         //
 287         // NB: normally we should call it just the first time but doing it
 288         //     every time is simpler than keeping a flag
 289         Layout();
 290     }
 291
 292     return true;
 293 }
 294
 295 void wxDialog::Raise()
 296 {
 297     ::SetForegroundWindow(GetHwnd());
 298 }
 299
 300 // show dialog modally
 301 int wxDialog::ShowModal()
 302 {
 303     wxASSERT_MSG( !IsModal(), _T("wxDialog::ShowModal() reentered?") );
 304
 305     m_endModalCalled = false;
 306
 307     Show();
 308
 309     // EndModal may have been called from InitDialog handler (called from
 310     // inside Show()), which would cause an infinite loop if we didn't take it
 311     // into account
 312     if ( !m_endModalCalled )
 313     {
 314         // modal dialog needs a parent window, so try to find one
 315         wxWindow *parent = GetParent();
 316         if ( !parent )
 317         {
 318             parent = FindSuitableParent();
 319         }
 320
 321         // remember where the focus was
 322         wxWindow *oldFocus = m_oldFocus;
 323         if ( !oldFocus )
 324         {
 325             // VZ: do we really want to do this?
 326             oldFocus = parent;
 327         }
 328
 329         // We have to remember the HWND because we need to check
 330         // the HWND still exists (oldFocus can be garbage when the dialog
 331         // exits, if it has been destroyed)
 332         HWND hwndOldFocus = oldFocus ? GetHwndOf(oldFocus) : NULL;
 333
 334
 335         // enter and run the modal loop
 336         {
 337             wxDialogModalDataTiedPtr modalData(&m_modalData,
 338                                                new wxDialogModalData(this));
 339             modalData->RunLoop();
 340         }
 341
 342
 343         // and restore focus
 344         // Note that this code MUST NOT access the dialog object's data
 345         // in case the object has been deleted (which will be the case
 346         // for a modal dialog that has been destroyed before calling EndModal).
 347         if ( oldFocus && (oldFocus != this) && ::IsWindow(hwndOldFocus))
 348         {
 349             // This is likely to prove that the object still exists
 350             if (wxFindWinFromHandle((WXHWND) hwndOldFocus) == oldFocus)
 351                 oldFocus->SetFocus();
 352         }
 353     }
 354
 355     return GetReturnCode();
 356 }
 357
 358 void wxDialog::EndModal(int retCode)
 359 {
 360     wxASSERT_MSG( IsModal(), _T("EndModal() called for non modal dialog") );
 361
 362     m_endModalCalled = true;
 363     SetReturnCode(retCode);
 364
 365     Hide();
 366 }
 367
 368 void wxDialog::EndDialog(int rc)
 369 {
 370     if ( IsModal() )
 371         EndModal(rc);
 372     else
 373         Hide();
 374 }
 375
 376 // ----------------------------------------------------------------------------
 377 // wxWin event handlers
 378 // ----------------------------------------------------------------------------
 379
 380 // Standard buttons
 381 void wxDialog::OnOK(wxCommandEvent& WXUNUSED(event))
 382 {
 383   if ( Validate() && TransferDataFromWindow() )
 384   {
 385       EndDialog(wxID_OK);
 386   }
 387 }
 388
 389 void wxDialog::OnApply(wxCommandEvent& WXUNUSED(event))
 390 {
 391     if ( Validate() )
 392         TransferDataFromWindow();
 393
 394     // TODO probably need to disable the Apply button until things change again
 395 }
 396
 397 void wxDialog::OnCancel(wxCommandEvent& WXUNUSED(event))
 398 {
 399     EndDialog(wxID_CANCEL);
 400 }
 401
 402 void wxDialog::OnCloseWindow(wxCloseEvent& WXUNUSED(event))
 403 {
 404     // We'll send a Cancel message by default, which may close the dialog.
 405     // Check for looping if the Cancel event handler calls Close().
 406
 407     // Note that if a cancel button and handler aren't present in the dialog,
 408     // nothing will happen when you close the dialog via the window manager, or
 409     // via Close(). We wouldn't want to destroy the dialog by default, since
 410     // the dialog may have been created on the stack. However, this does mean
 411     // that calling dialog->Close() won't delete the dialog unless the handler
 412     // for wxID_CANCEL does so. So use Destroy() if you want to be sure to
 413     // destroy the dialog. The default OnCancel (above) simply ends a modal
 414     // dialog, and hides a modeless dialog.
 415
 416     // VZ: this is horrible and MT-unsafe. Can't we reuse some of these global
 417     //     lists here? don't dare to change it now, but should be done later!
 418     static wxList closing;
 419
 420     if ( closing.Member(this) )
 421         return;
 422
 423     closing.Append(this);
 424
 425     wxCommandEvent cancelEvent(wxEVT_COMMAND_BUTTON_CLICKED, wxID_CANCEL);
 426     cancelEvent.SetEventObject( this );
 427     GetEventHandler()->ProcessEvent(cancelEvent); // This may close the dialog
 428
 429     closing.DeleteObject(this);
 430 }
 431
 432 void wxDialog::OnSysColourChanged(wxSysColourChangedEvent& WXUNUSED(event))
 433 {
 434 #if wxUSE_CTL3D
 435     Ctl3dColorChange();
 436 #else
 437     SetBackgroundColour(wxSystemSettings::GetColour(wxSYS_COLOUR_3DFACE));
 438     Refresh();
 439 #endif
 440 }
 441
 442 // ---------------------------------------------------------------------------
 443 // dialog window proc
 444 // ---------------------------------------------------------------------------
 445
 446 WXLRESULT wxDialog::MSWWindowProc(WXUINT message, WXWPARAM wParam, WXLPARAM lParam)
 447 {
 448     WXLRESULT rc = 0;
 449     bool processed = false;
 450
 451     switch ( message )
 452     {
 453 #ifdef __WXWINCE__
 454         // react to pressing the OK button in the title
 455         case WM_COMMAND:
 456         {
 457             switch ( LOWORD(wParam) )
 458             {
 459 #ifndef __SMARTPHONE__
 460                 case IDOK:
 461                     wxButton *btn = wxDynamicCast(FindWindow(wxID_CANCEL), wxButton);
 462                     if ( btn && btn->IsEnabled() )
 463                     {
 464                         // if we do have a cancel button, do press it
 465                         btn->MSWCommand(BN_CLICKED, 0 /* unused */);
 466                         processed = true;
 467                         break;
 468                     }
 469 #else // ifdef __SMARTPHONE__
 470                 case IDM_LEFT:
 471                 case IDM_RIGHT:
 472                     processed = HandleCommand( LOWORD(wParam) , 0 , NULL );
 473                     break;
 474 #endif // __SMARTPHONE__
 475             }
 476             break;
 477         }
 478 #endif
 479         case WM_CLOSE:
 480             // if we can't close, tell the system that we processed the
 481             // message - otherwise it would close us
 482             processed = !Close();
 483             break;
 484
 485         case WM_SIZE:
 486             // the Windows dialogs unfortunately are not meant to be resizeable
 487             // at all and their standard class doesn't include CS_[VH]REDRAW
 488             // styles which means that the window is not refreshed properly
 489             // after the resize and no amount of WS_CLIPCHILDREN/SIBLINGS can
 490             // help with it - so we have to refresh it manually which certainly
 491             // creates flicker but at least doesn't show garbage on the screen
 492             rc = wxWindow::MSWWindowProc(message, wParam, lParam);
 493             processed = true;
 494             if ( HasFlag(wxFULL_REPAINT_ON_RESIZE) )
 495             {
 496                 ::InvalidateRect(GetHwnd(), NULL, false /* erase bg */);
 497             }
 498             break;
 499
 500 #ifndef __WXMICROWIN__
 501         case WM_SETCURSOR:
 502             // we want to override the busy cursor for modal dialogs:
 503             // typically, wxBeginBusyCursor() is called and then a modal dialog
 504             // is shown, but the modal dialog shouldn't have hourglass cursor
 505             if ( IsModal() && wxIsBusy() )
 506             {
 507                 // set our cursor for all windows (but see below)
 508                 wxCursor cursor = m_cursor;
 509                 if ( !cursor.Ok() )
 510                     cursor = wxCURSOR_ARROW;
 511
 512                 ::SetCursor(GetHcursorOf(cursor));
 513
 514                 // in any case, stop here and don't let wxWindow process this
 515                 // message (it would set the busy cursor)
 516                 processed = true;
 517
 518                 // but return false to tell the child window (if the event
 519                 // comes from one of them and not from ourselves) that it can
 520                 // set its own cursor if it has one: thus, standard controls
 521                 // (e.g. text ctrl) still have correct cursors in a dialog
 522                 // invoked while wxIsBusy()
 523                 rc = false;
 524             }
 525             break;
 526 #endif // __WXMICROWIN__
 527     }
 528
 529     if ( !processed )
 530         rc = wxWindow::MSWWindowProc(message, wParam, lParam);
 531
 532     return rc;
 533 }
 534
 535 #if wxUSE_CTL3D
 536
 537 // Define for each class of dialog and control
 538 WXHBRUSH wxDialog::OnCtlColor(WXHDC WXUNUSED(pDC),
 539                               WXHWND WXUNUSED(pWnd),
 540                               WXUINT WXUNUSED(nCtlColor),
 541                               WXUINT message,
 542                               WXWPARAM wParam,
 543                               WXLPARAM lParam)
 544 {
 545     return (WXHBRUSH)Ctl3dCtlColorEx(message, wParam, lParam);
 546 }
 547
 548 #endif // wxUSE_CTL3D
 549