src/motif/dialog.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        dialog.cpp
   3 // Purpose:     wxDialog class
   4 // Author:      Julian Smart
   5 // Modified by:
   6 // Created:     17/09/98
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Julian Smart
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 #ifdef __GNUG__
  13 #pragma implementation "dialog.h"
  14 #endif
  15
  16 #ifdef __VMS
  17 #define XtDisplay XTDISPLAY
  18 #define XtWindow XTWINDOW
  19 #define XtParent XTPARENT
  20 #define XtScreen XTSCREEN
  21 #endif
  22
  23 #include "wx/dialog.h"
  24 #include "wx/utils.h"
  25 #include "wx/app.h"
  26 #include "wx/settings.h"
  27 #include "wx/evtloop.h"
  28
  29 #ifdef __VMS__
  30 #pragma message disable nosimpint
  31 #endif
  32 #include <Xm/Xm.h>
  33
  34 #include <X11/Shell.h>
  35 #if XmVersion >= 1002
  36 #include <Xm/XmAll.h>
  37 #endif
  38 #include <Xm/MwmUtil.h>
  39 #include <Xm/Label.h>
  40 #include <Xm/BulletinB.h>
  41 #include <Xm/Frame.h>
  42 #include <Xm/Text.h>
  43 #include <Xm/DialogS.h>
  44 #include <Xm/FileSB.h>
  45 #include <Xm/RowColumn.h>
  46 #include <Xm/LabelG.h>
  47 #include <Xm/AtomMgr.h>
  48 #if   XmVersion > 1000
  49 #include <Xm/Protocols.h>
  50 #endif
  51 #ifdef __VMS__
  52 #pragma message enable nosimpint
  53 #endif
  54
  55 #include "wx/motif/private.h"
  56
  57 // A stack of modal_showing flags, since we can't rely
  58 // on accessing wxDialog::m_modalShowing within
  59 // wxDialog::Show in case a callback has deleted the wxDialog.
  60 // static wxList wxModalShowingStack;
  61
  62 // Lists to keep track of windows, so we can disable/enable them
  63 // for modal dialogs
  64 wxList wxModalDialogs;
  65 extern wxList wxModelessWindows;  // Frames and modeless dialogs
  66 extern wxList wxPendingDelete;
  67
  68 #define wxUSE_INVISIBLE_RESIZE 1
  69
  70 IMPLEMENT_DYNAMIC_CLASS(wxDialog, wxTopLevelWindow)
  71
  72 BEGIN_EVENT_TABLE(wxDialog, wxTopLevelWindow)
  73   EVT_BUTTON(wxID_OK, wxDialog::OnOK)
  74   EVT_BUTTON(wxID_APPLY, wxDialog::OnApply)
  75   EVT_BUTTON(wxID_CANCEL, wxDialog::OnCancel)
  76   EVT_CHAR_HOOK(wxDialog::OnCharHook)
  77   EVT_SYS_COLOUR_CHANGED(wxDialog::OnSysColourChanged)
  78   EVT_CLOSE(wxDialog::OnCloseWindow)
  79 END_EVENT_TABLE()
  80
  81
  82 wxDialog::wxDialog()
  83 {
  84     m_modalShowing = FALSE;
  85     m_eventLoop = NULL;
  86     m_backgroundColour = wxSystemSettings::GetColour(wxSYS_COLOUR_3DFACE);
  87 }
  88
  89 bool wxDialog::Create(wxWindow *parent, wxWindowID id,
  90                       const wxString& title,
  91                       const wxPoint& pos,
  92                       const wxSize& size,
  93                       long style,
  94                       const wxString& name)
  95 {
  96     SetExtraStyle(GetExtraStyle() | wxTOPLEVEL_EX_DIALOG);
  97
  98     if( !wxTopLevelWindow::Create( parent, id, title, pos, size, style,
  99                                    name ) )
 100         return FALSE;
 101
 102     m_modalShowing = FALSE;
 103     m_eventLoop = NULL;
 104
 105     m_backgroundColour = wxSystemSettings::GetColour(wxSYS_COLOUR_3DFACE);
 106     m_foregroundColour = *wxBLACK;
 107
 108     Widget dialogShell = (Widget) m_mainWidget;
 109     Widget shell = XtParent(dialogShell) ;
 110
 111     SetTitle( title );
 112
 113     m_font = wxSystemSettings::GetFont(wxSYS_DEFAULT_GUI_FONT);
 114     ChangeFont(FALSE);
 115
 116     // Can't remember what this was about... but I think it's necessary.
 117     if (wxUSE_INVISIBLE_RESIZE)
 118     {
 119         if (pos.x > -1)
 120             XtVaSetValues(dialogShell, XmNx, pos.x,
 121             NULL);
 122         if (pos.y > -1)
 123             XtVaSetValues(dialogShell, XmNy, pos.y,
 124             NULL);
 125
 126         if (size.x > -1)
 127             XtVaSetValues(dialogShell, XmNwidth, size.x, NULL);
 128         if (size.y > -1)
 129             XtVaSetValues(dialogShell, XmNheight, size.y, NULL);
 130     }
 131
 132     // Positioning of the dialog doesn't work properly unless the dialog
 133     // is managed, so we manage without mapping to the screen.
 134     // To show, we map the shell (actually it's parent).
 135     if (!wxUSE_INVISIBLE_RESIZE)
 136         XtVaSetValues(shell, XmNmappedWhenManaged, FALSE, NULL);
 137
 138     if (!wxUSE_INVISIBLE_RESIZE)
 139     {
 140         XtManageChild(dialogShell);
 141         SetSize(pos.x, pos.y, size.x, size.y);
 142     }
 143     XtAddEventHandler(dialogShell,ExposureMask,FALSE,
 144         wxUniversalRepaintProc, (XtPointer) this);
 145
 146     ChangeBackgroundColour();
 147
 148     return TRUE;
 149 }
 150
 151 bool wxDialog::DoCreate( wxWindow* parent, wxWindowID id,
 152                          const wxString& title,
 153                          const wxPoint& pos,
 154                          const wxSize& size,
 155                          long style,
 156                          const wxString& name )
 157 {
 158     Widget parentWidget = (Widget) 0;
 159     if( parent )
 160         parentWidget = (Widget) parent->GetTopWidget();
 161     if( !parent )
 162         parentWidget = (Widget) wxTheApp->GetTopLevelWidget();
 163
 164     wxASSERT_MSG( (parentWidget != (Widget) 0),
 165                   "Could not find a suitable parent shell for dialog." );
 166
 167     Arg args[2];
 168     XtSetArg (args[0], XmNdefaultPosition, False);
 169     XtSetArg (args[1], XmNautoUnmanage, False);
 170     Widget dialogShell =
 171         XmCreateBulletinBoardDialog( parentWidget, (char*)name.c_str(),
 172                                      args, 2);
 173     m_mainWidget = (WXWidget) dialogShell;
 174
 175     // We don't want margins, since there is enough elsewhere.
 176     XtVaSetValues( dialogShell,
 177                    XmNmarginHeight,   0,
 178                    XmNmarginWidth,    0,
 179                    XmNresizePolicy, XmRESIZE_NONE,
 180                    NULL ) ;
 181
 182     XtTranslations ptr ;
 183     XtOverrideTranslations(dialogShell,
 184         ptr = XtParseTranslationTable("<Configure>: resize()"));
 185     XtFree((char *)ptr);
 186
 187     XtRealizeWidget(dialogShell);
 188
 189     wxAddWindowToTable( (Widget)m_mainWidget, this );
 190
 191     return TRUE;
 192 }
 193
 194 void wxDialog::SetModal(bool flag)
 195 {
 196     if ( flag )
 197         m_windowStyle |= wxDIALOG_MODAL ;
 198     else
 199         if ( m_windowStyle & wxDIALOG_MODAL )
 200             m_windowStyle -= wxDIALOG_MODAL ;
 201
 202         wxModelessWindows.DeleteObject(this);
 203         if (!flag)
 204             wxModelessWindows.Append(this);
 205 }
 206
 207 wxDialog::~wxDialog()
 208 {
 209     m_isBeingDeleted = TRUE;
 210     delete m_eventLoop;
 211
 212     if (m_mainWidget)
 213     {
 214         XtRemoveEventHandler((Widget) m_mainWidget, ExposureMask, FALSE,
 215                              wxUniversalRepaintProc, (XtPointer) this);
 216     }
 217
 218     m_modalShowing = FALSE;
 219     if (!wxUSE_INVISIBLE_RESIZE && m_mainWidget)
 220     {
 221         XtUnmapWidget((Widget) m_mainWidget);
 222     }
 223 }
 224
 225 void wxDialog::DoDestroy()
 226 {
 227     if( m_mainWidget )
 228     {
 229         wxDeleteWindowFromTable( (Widget)m_mainWidget );
 230         XtDestroyWidget( (Widget)m_mainWidget );
 231     }
 232 }
 233
 234 // By default, pressing escape cancels the dialog
 235 void wxDialog::OnCharHook(wxKeyEvent& event)
 236 {
 237     if (event.m_keyCode == WXK_ESCAPE)
 238     {
 239         // Behaviour changed in 2.0: we'll send a Cancel message
 240         // to the dialog instead of Close.
 241         wxCommandEvent cancelEvent(wxEVT_COMMAND_BUTTON_CLICKED, wxID_CANCEL);
 242         cancelEvent.SetEventObject( this );
 243         GetEventHandler()->ProcessEvent(cancelEvent);
 244
 245         return;
 246     }
 247     // We didn't process this event.
 248     event.Skip();
 249 }
 250
 251 void wxDialog::DoSetSize(int x, int y, int width, int height, int sizeFlags)
 252 {
 253     XtVaSetValues((Widget) m_mainWidget, XmNresizePolicy, XmRESIZE_ANY, NULL);
 254     wxWindow::DoSetSize(x, y, width, height, sizeFlags);
 255     XtVaSetValues((Widget) m_mainWidget, XmNresizePolicy, XmRESIZE_NONE, NULL);
 256 }
 257
 258 void wxDialog::DoSetClientSize(int width, int height)
 259 {
 260     wxWindow::SetSize(-1, -1, width, height);
 261 }
 262
 263 void wxDialog::SetTitle(const wxString& title)
 264 {
 265     wxTopLevelWindow::SetTitle( title );
 266
 267     if( !title.empty() )
 268     {
 269         wxXmString str( title );
 270         XtVaSetValues( (Widget)m_mainWidget,
 271                        XmNtitle, title.c_str(),
 272                        XmNdialogTitle, str(), // Roberto Cocchi
 273                        XmNiconName, title.c_str(),
 274                        NULL );
 275     }
 276 }
 277
 278 bool wxDialog::Show( bool show )
 279 {
 280     if( !wxTopLevelWindowMotif::Show( show ) )
 281         return FALSE;
 282
 283     m_isShown = show;
 284
 285     if (show)
 286     {
 287         if (!wxUSE_INVISIBLE_RESIZE)
 288             XtMapWidget(XtParent((Widget) m_mainWidget));
 289         else
 290             XtManageChild((Widget)m_mainWidget) ;
 291
 292         XRaiseWindow( XtDisplay( (Widget)m_mainWidget ),
 293                       XtWindow( (Widget)m_mainWidget) );
 294
 295     }
 296     else
 297     {
 298         if (!wxUSE_INVISIBLE_RESIZE)
 299             XtUnmapWidget(XtParent((Widget) m_mainWidget));
 300         else
 301             XtUnmanageChild((Widget)m_mainWidget) ;
 302
 303         XFlush(XtDisplay((Widget) wxTheApp->GetTopLevelWidget()));
 304         XSync(XtDisplay((Widget) wxTheApp->GetTopLevelWidget()), FALSE);
 305     }
 306
 307     return TRUE;
 308 }
 309
 310 // Shows a dialog modally, returning a return code
 311 int wxDialog::ShowModal()
 312 {
 313     m_windowStyle |= wxDIALOG_MODAL;
 314
 315     Show(TRUE);
 316
 317     if (m_modalShowing)
 318         return 0;
 319     m_eventLoop = new wxEventLoop;
 320
 321     m_modalShowing = TRUE;
 322     XtAddGrab((Widget) m_mainWidget, TRUE, FALSE);
 323
 324     m_eventLoop->Run();
 325
 326     // Now process all events in case they get sent to a destroyed dialog
 327     XSync(XtDisplay((Widget) wxTheApp->GetTopLevelWidget()), FALSE);
 328     while (m_eventLoop->Pending())
 329     {
 330         XFlush(XtDisplay((Widget) wxTheApp->GetTopLevelWidget()));
 331         m_eventLoop->Dispatch();
 332     }
 333
 334     delete m_eventLoop;
 335     m_eventLoop = NULL;
 336
 337     // TODO: is it safe to call this, if the dialog may have been deleted
 338     // by now? Probably only if we're using delayed deletion of dialogs.
 339     return GetReturnCode();
 340 }
 341
 342 void wxDialog::EndModal(int retCode)
 343 {
 344     if (!m_modalShowing)
 345         return;
 346
 347     SetReturnCode(retCode);
 348
 349     // Strangely, we don't seem to need this now.
 350     //    XtRemoveGrab((Widget) m_mainWidget);
 351
 352     Show(FALSE);
 353
 354     m_modalShowing = FALSE;
 355     m_eventLoop->Exit();
 356 }
 357
 358 // Standard buttons
 359 void wxDialog::OnOK(wxCommandEvent& WXUNUSED(event))
 360 {
 361     if ( Validate() && TransferDataFromWindow() )
 362     {
 363         if ( IsModal() )
 364             EndModal(wxID_OK);
 365         else
 366         {
 367             SetReturnCode(wxID_OK);
 368             this->Show(FALSE);
 369         }
 370     }
 371 }
 372
 373 void wxDialog::OnApply(wxCommandEvent& WXUNUSED(event))
 374 {
 375     if (Validate())
 376         TransferDataFromWindow();
 377     // TODO probably need to disable the Apply button until things change again
 378 }
 379
 380 void wxDialog::OnCancel(wxCommandEvent& WXUNUSED(event))
 381 {
 382     if ( IsModal() )
 383         EndModal(wxID_CANCEL);
 384     else
 385     {
 386         SetReturnCode(wxID_CANCEL);
 387         this->Show(FALSE);
 388     }
 389 }
 390
 391 void wxDialog::OnCloseWindow(wxCloseEvent& WXUNUSED(event))
 392 {
 393     // We'll send a Cancel message by default,
 394     // which may close the dialog.
 395     // Check for looping if the Cancel event handler calls Close().
 396
 397     // Note that if a cancel button and handler aren't present in the dialog,
 398     // nothing will happen when you close the dialog via the window manager, or
 399     // via Close().
 400     // We wouldn't want to destroy the dialog by default, since the dialog may have been
 401     // created on the stack.
 402     // However, this does mean that calling dialog->Close() won't delete the dialog
 403     // unless the handler for wxID_CANCEL does so. So use Destroy() if you want to be
 404     // sure to destroy the dialog.
 405     // The default OnCancel (above) simply ends a modal dialog, and hides a modeless dialog.
 406
 407     static wxList closing;
 408
 409     if ( closing.Member(this) )
 410         return;
 411
 412     closing.Append(this);
 413
 414     wxCommandEvent cancelEvent(wxEVT_COMMAND_BUTTON_CLICKED, wxID_CANCEL);
 415     cancelEvent.SetEventObject( this );
 416     GetEventHandler()->ProcessEvent(cancelEvent); // This may close the dialog
 417
 418     closing.DeleteObject(this);
 419 }
 420
 421 // Destroy the window (delayed, if a managed window)
 422 bool wxDialog::Destroy()
 423 {
 424     if (!wxPendingDelete.Member(this))
 425         wxPendingDelete.Append(this);
 426     return TRUE;
 427 }
 428
 429 void wxDialog::OnSysColourChanged(wxSysColourChangedEvent& WXUNUSED(event))
 430 {
 431     SetBackgroundColour(wxSystemSettings::GetColour(wxSYS_COLOUR_3DFACE));
 432     Refresh();
 433 }
 434
 435 void wxDialog::ChangeFont(bool keepOriginalSize)
 436 {
 437     wxWindow::ChangeFont(keepOriginalSize);
 438 }
 439
 440 void wxDialog::ChangeBackgroundColour()
 441 {
 442     if (GetMainWidget())
 443         DoChangeBackgroundColour(GetMainWidget(), m_backgroundColour);
 444 }
 445
 446 void wxDialog::ChangeForegroundColour()
 447 {
 448     if (GetMainWidget())
 449         DoChangeForegroundColour(GetMainWidget(), m_foregroundColour);
 450 }