src/os2/dialog.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        dialog.cpp
   3 // Purpose:     wxDialog class
   4 // Author:      AUTHOR
   5 // Modified by:
   6 // Created:     ??/??/98
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) AUTHOR
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 // For compilers that support precompilation, includes "wx.h".
  13 #include "wx/wxprec.h"
  14
  15 #ifndef WX_PRECOMP
  16 #include "wx/dialog.h"
  17 #include "wx/utils.h"
  18 #include "wx/frame.h"
  19 #include "wx/app.h"
  20 #include "wx/settings.h"
  21 #include "wx/intl.h"
  22 #include "wx/log.h"
  23 #endif
  24
  25 #include "wx/os2/private.h"
  26 #include "wx/log.h"
  27
  28 #if wxUSE_COMMON_DIALOGS
  29 #include <commdlg.h>
  30 #endif
  31
  32 #define wxDIALOG_DEFAULT_X 300
  33 #define wxDIALOG_DEFAULT_Y 300
  34
  35 // Lists to keep track of windows, so we can disable/enable them
  36 // for modal dialogs
  37 wxWindowList wxModalDialogs;
  38 wxWindowList wxModelessWindows;  // Frames and modeless dialogs
  39 extern wxList WXDLLEXPORT wxPendingDelete;
  40
  41 #if !USE_SHARED_LIBRARY
  42    IMPLEMENT_DYNAMIC_CLASS(wxDialog, wxPanel)
  43
  44    BEGIN_EVENT_TABLE(wxDialog, wxPanel)
  45       EVT_SIZE(wxDialog::OnSize)
  46       EVT_BUTTON(wxID_OK, wxDialog::OnOK)
  47       EVT_BUTTON(wxID_APPLY, wxDialog::OnApply)
  48       EVT_BUTTON(wxID_CANCEL, wxDialog::OnCancel)
  49       EVT_CHAR_HOOK(wxDialog::OnCharHook)
  50       EVT_SYS_COLOUR_CHANGED(wxDialog::OnSysColourChanged)
  51       EVT_CLOSE(wxDialog::OnCloseWindow)
  52    END_EVENT_TABLE()
  53 #endif
  54
  55 wxDialog::wxDialog()
  56 {
  57     m_isShown = FALSE;
  58     m_modalShowing = FALSE;
  59
  60     SetBackgroundColour(wxSystemSettings::GetSystemColour(wxSYS_COLOUR_3DFACE));
  61 }
  62
  63 bool wxDialog::Create(wxWindow *parent, wxWindowID id,
  64            const wxString& title,
  65            const wxPoint& pos,
  66            const wxSize& size,
  67            long style,
  68            const wxString& name)
  69 {
  70 #if wxUSE_TOOLTIPS
  71     m_hwndToolTip = 0;
  72 #endif
  73
  74     SetBackgroundColour(wxSystemSettings::GetSystemColour(wxSYS_COLOUR_3DFACE));
  75     SetName(name);
  76
  77     if (!parent)
  78         wxTopLevelWindows.Append(this);
  79
  80     if (parent) parent->AddChild(this);
  81
  82     if ( id == -1 )
  83         m_windowId = (int)NewControlId();
  84     else
  85         m_windowId = id;
  86
  87     int x = pos.x;
  88     int y = pos.y;
  89     int width = size.x;
  90     int height = size.y;
  91
  92     if (x < 0) x = wxDIALOG_DEFAULT_X;
  93     if (y < 0) y = wxDIALOG_DEFAULT_Y;
  94
  95     m_windowStyle = style;
  96
  97     m_isShown = FALSE;
  98     m_modalShowing = FALSE;
  99
 100     if (width < 0)
 101         width = 500;
 102     if (height < 0)
 103         height = 500;
 104
 105     // TODO: convert below to OS/2 PM code
 106
 107     // All dialogs should really have this style
 108 //    m_windowStyle |= wxTAB_TRAVERSAL;
 109 //
 110 //    WXDWORD extendedStyle = MakeExtendedStyle(m_windowStyle);
 111 //    if (m_windowStyle & wxSTAY_ON_TOP)
 112 //        extendedStyle |= WS_EX_TOPMOST;
 113 //
 114     // Allows creation of dialogs with & without captions under MSWindows,
 115     // resizeable or not (but a resizeable dialog always has caption -
 116     // otherwise it would look too strange)
 117 //    const wxChar *dlg;
 118 //    if ( style & wxRESIZE_BORDER )
 119 //        dlg = wxT("wxResizeableDialog");
 120 //    else if ( style & wxCAPTION )
 121 //        dlg = wxT("wxCaptionDialog");
 122 //    else
 123 //        dlg = wxT("wxNoCaptionDialog");
 124 //    MSWCreate(m_windowId, parent, NULL, this, NULL,
 125 //              x, y, width, height,
 126 //              0, // style is not used if we have dlg template
 127 //              dlg,
 128 //              extendedStyle);
 129 //
 130 //    HWND hwnd = (HWND)GetHWND();
 131 //
 132 //    if ( !hwnd )
 133 //    {
 134 //        wxLogError(wxT("Failed to create dialog."));
 135 //
 136 //        return FALSE;
 137 //    }
 138 //
 139 //    SubclassWin(GetHWND());
 140 //
 141 //    SetWindowText(hwnd, title);
 142 //    SetFont(wxSystemSettings::GetSystemFont(wxSYS_DEFAULT_GUI_FONT));
 143 //
 144     return TRUE;
 145 }
 146
 147 void wxDialog::SetModal(bool flag)
 148 {
 149     if ( flag )
 150         m_windowStyle |= wxDIALOG_MODAL ;
 151     else if ( m_windowStyle & wxDIALOG_MODAL )
 152         m_windowStyle -= wxDIALOG_MODAL ;
 153
 154       wxModelessWindows.DeleteObject(this);
 155       if (!flag)
 156           wxModelessWindows.Append(this);
 157 }
 158
 159 wxDialog::~wxDialog()
 160 {
 161     m_isBeingDeleted = TRUE;
 162
 163     wxTopLevelWindows.DeleteObject(this);
 164
 165     Show(FALSE);
 166
 167     if (m_modalShowing)
 168     {
 169         if (GetParent() && GetParent()->GetHWND())
 170            // TODO: bring the parent to the top
 171            return;
 172     }
 173
 174     m_modalShowing = FALSE;
 175     if ( (GetWindowStyleFlag() & wxDIALOG_MODAL) != wxDIALOG_MODAL )
 176         wxModelessWindows.DeleteObject(this);
 177
 178
 179     // If this is the last top-level window, exit.
 180     if (wxTheApp && (wxTopLevelWindows.Number() == 0))
 181     {
 182       wxTheApp->SetTopWindow(NULL);
 183
 184       if (wxTheApp->GetExitOnFrameDelete())
 185       {
 186          // TODO: exit
 187       }
 188     }
 189 }
 190
 191 // By default, pressing escape cancels the dialog
 192 void wxDialog::OnCharHook(wxKeyEvent& event)
 193 {
 194     if (GetHWND())
 195     {
 196         if (event.m_keyCode == WXK_ESCAPE)
 197         {
 198             // Behaviour changed in 2.0: we'll send a Cancel message
 199             // to the dialog instead of Close.
 200             wxCommandEvent cancelEvent(wxEVT_COMMAND_BUTTON_CLICKED, wxID_CANCEL);
 201             cancelEvent.SetEventObject( this );
 202             GetEventHandler()->ProcessEvent(cancelEvent);
 203
 204             return;
 205         }
 206     }
 207     // We didn't process this event.
 208     event.Skip();
 209 }
 210
 211 void wxDialog::OnPaint(wxPaintEvent& event)
 212 {
 213   // No: if you call the default procedure, it makes
 214   // the following painting code not work.
 215 //  wxWindow::OnPaint(event);
 216 }
 217
 218 void wxDialog::Fit()
 219 {
 220     wxWindow::Fit();
 221 }
 222
 223 void wxDialog::Iconize(bool WXUNUSED(iconize))
 224 {
 225     // Windows dialog boxes can't be iconized
 226 }
 227
 228 bool wxDialog::IsIconized() const
 229 {
 230     return FALSE;
 231 }
 232
 233 void wxDialog::DoSetClientSize(int width, int height)
 234 {
 235     // TODO: Convert the below to OS/2 PM code
 236
 237 //    HWND hWnd = (HWND) GetHWND();
 238 //    RECT rect;
 239 //    ::GetClientRect(hWnd, &rect);
 240 //
 241 //    RECT rect2;
 242 //    GetWindowRect(hWnd, &rect2);
 243 //
 244     // Find the difference between the entire window (title bar and all)
 245     // and the client area; add this to the new client size to move the
 246     // window
 247 //    int actual_width = rect2.right - rect2.left - rect.right + width;
 248 //    int actual_height = rect2.bottom - rect2.top - rect.bottom + height;
 249
 250 //    MoveWindow(hWnd, rect2.left, rect2.top, actual_width, actual_height, TRUE);
 251 //
 252 //    wxSizeEvent event(wxSize(actual_width, actual_height), m_windowId);
 253 //    event.SetEventObject( this );
 254 //    GetEventHandler()->ProcessEvent(event);
 255 }
 256 void wxDialog::GetPosition(int *x, int *y) const
 257 {
 258     // TODO: Convert
 259 //  HWND hWnd = (HWND) GetHWND();
 260 //  RECT rect;
 261 //  GetWindowRect(hWnd, &rect);
 262
 263 //  *x = rect.left;
 264 //  *y = rect.top;
 265 }
 266
 267 bool wxDialog::IsShown() const
 268 {
 269   return m_isShown;
 270 }
 271
 272 bool wxDialog::IsModal() const
 273 {
 274     return wxModalDialogs.Find((wxDialog *)this) != 0; // const_cast
 275 }
 276
 277 bool wxDialog::Show(bool show)
 278 {
 279     // TODO: This is involved code, look at msw port for details
 280     return FALSE;
 281 }
 282
 283 void wxDialog::SetTitle(const wxString& title)
 284 {
 285     ::WinSetWindowText((HWND) GetHWND(), title.c_str());
 286 }
 287
 288 wxString wxDialog::GetTitle() const
 289 {
 290     ::WinQueryWindowText((HWND) GetHWND(), 1000, wxBuffer);
 291     return wxString(wxBuffer);
 292 }
 293
 294 void wxDialog::Centre(int direction)
 295 {
 296   int x_offset,y_offset ;
 297   int display_width, display_height;
 298   int  width, height, x, y;
 299   wxWindow *parent = GetParent();
 300   if ((direction & wxCENTER_FRAME) && parent)
 301   {
 302       parent->GetPosition(&x_offset,&y_offset) ;
 303       parent->GetSize(&display_width,&display_height) ;
 304   }
 305   else
 306   {
 307     wxDisplaySize(&display_width, &display_height);
 308     x_offset = 0 ;
 309     y_offset = 0 ;
 310   }
 311
 312   GetSize(&width, &height);
 313   GetPosition(&x, &y);
 314
 315   if (direction & wxHORIZONTAL)
 316     x = (int)((display_width - width)/2);
 317   if (direction & wxVERTICAL)
 318     y = (int)((display_height - height)/2);
 319
 320   SetSize(x+x_offset, y+y_offset, width, height);
 321 }
 322
 323 // Replacement for Show(TRUE) for modal dialogs - returns return code
 324 int wxDialog::ShowModal()
 325 {
 326     m_windowStyle |= wxDIALOG_MODAL;
 327     Show(TRUE);
 328     return GetReturnCode();
 329 }
 330
 331 void wxDialog::EndModal(int retCode)
 332 {
 333     SetReturnCode(retCode);
 334     // TODO modal un-showing
 335     Show(FALSE);
 336 }
 337
 338 // Define for each class of dialog and control
 339 WXHBRUSH wxDialog::OnCtlColor(WXHDC pDC, WXHWND pWnd, WXUINT nCtlColor,
 340       WXUINT message, WXWPARAM wParam, WXLPARAM lParam)
 341 {
 342     return 0;
 343 }
 344 // Standard buttons
 345 void wxDialog::OnOK(wxCommandEvent& event)
 346 {
 347     if ( Validate() && TransferDataFromWindow() )
 348     {
 349         if ( IsModal() )
 350             EndModal(wxID_OK);
 351         else
 352         {
 353             SetReturnCode(wxID_OK);
 354             this->Show(FALSE);
 355         }
 356     }
 357 }
 358
 359 void wxDialog::OnApply(wxCommandEvent& event)
 360 {
 361     if (Validate())
 362         TransferDataFromWindow();
 363     // TODO probably need to disable the Apply button until things change again
 364 }
 365
 366 void wxDialog::OnCancel(wxCommandEvent& event)
 367 {
 368     if ( IsModal() )
 369         EndModal(wxID_CANCEL);
 370     else
 371     {
 372         SetReturnCode(wxID_CANCEL);
 373         this->Show(FALSE);
 374     }
 375 }
 376
 377 void wxDialog::OnCloseWindow(wxCloseEvent& event)
 378 {
 379     // We'll send a Cancel message by default,
 380     // which may close the dialog.
 381     // Check for looping if the Cancel event handler calls Close().
 382
 383     // Note that if a cancel button and handler aren't present in the dialog,
 384     // nothing will happen when you close the dialog via the window manager, or
 385     // via Close().
 386     // We wouldn't want to destroy the dialog by default, since the dialog may have been
 387     // created on the stack.
 388     // However, this does mean that calling dialog->Close() won't delete the dialog
 389     // unless the handler for wxID_CANCEL does so. So use Destroy() if you want to be
 390     // sure to destroy the dialog.
 391     // The default OnCancel (above) simply ends a modal dialog, and hides a modeless dialog.
 392
 393     static wxList closing;
 394
 395     if ( closing.Member(this) )
 396         return;
 397
 398     closing.Append(this);
 399
 400     wxCommandEvent cancelEvent(wxEVT_COMMAND_BUTTON_CLICKED, wxID_CANCEL);
 401     cancelEvent.SetEventObject( this );
 402     GetEventHandler()->ProcessEvent(cancelEvent); // This may close the dialog
 403
 404     closing.DeleteObject(this);
 405 }
 406
 407 // Destroy the window (delayed, if a managed window)
 408 bool wxDialog::Destroy()
 409 {
 410     if (!wxPendingDelete.Member(this))
 411         wxPendingDelete.Append(this);
 412     return TRUE;
 413 }
 414
 415 void wxDialog::OnSize(wxSizeEvent& WXUNUSED(event))
 416 {
 417   // if we're using constraints - do use them
 418   #if wxUSE_CONSTRAINTS
 419     if ( GetAutoLayout() )
 420     {
 421       Layout();
 422     }
 423   #endif
 424 }
 425
 426 void wxDialog::OnSysColourChanged(wxSysColourChangedEvent& event)
 427 {
 428   SetBackgroundColour(wxSystemSettings::GetSystemColour(wxSYS_COLOUR_3DFACE));
 429   Refresh();
 430 }
 431
 432 MRESULT wxDialog::OS2WindowProc(HWND hwnd, WXUINT message, WXWPARAM wParam, WXLPARAM lParam)
 433 {
 434     MRESULT rc = 0;
 435     bool    processed = FALSE;
 436
 437     switch ( message )
 438     {
 439         case WM_CLOSE:
 440             // if we can't close, tell the system that we processed the
 441             // message - otherwise it would close us
 442             processed = !Close();
 443             break;
 444     }
 445
 446     if ( !processed )
 447         rc = wxWindow::OS2WindowProc(hwnd, message, wParam, lParam);
 448
 449     return rc;
 450 }
 451