src/os2/dialog.cpp

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