src/gtk/dialog.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        dialog.cpp
   3 // Purpose:
   4 // Author:      Robert Roebling
   5 // Id:          $Id$
   6 // Copyright:   (c) 1998 Robert Roebling
   7 // Licence:     wxWindows licence
   8 /////////////////////////////////////////////////////////////////////////////
   9
  10 // For compilers that support precompilation, includes "wx.h".
  11 #include "wx/wxprec.h"
  12
  13 #include "wx/dialog.h"
  14 #include "wx/frame.h"
  15 #include "wx/app.h"
  16 #include "wx/cursor.h"
  17 #include "wx/evtloop.h"
  18
  19 #include <gdk/gdk.h>
  20 #include <gtk/gtk.h>
  21 #include <gdk/gdkkeysyms.h>
  22
  23 #include "wx/gtk/win_gtk.h"
  24
  25 //-----------------------------------------------------------------------------
  26 // global data
  27 //-----------------------------------------------------------------------------
  28
  29 extern int g_openDialogs;
  30
  31 //-----------------------------------------------------------------------------
  32 // wxDialog
  33 //-----------------------------------------------------------------------------
  34
  35 BEGIN_EVENT_TABLE(wxDialog,wxDialogBase)
  36     EVT_BUTTON  (wxID_OK,       wxDialog::OnOK)
  37     EVT_BUTTON  (wxID_CANCEL,   wxDialog::OnCancel)
  38     EVT_BUTTON  (wxID_APPLY,    wxDialog::OnApply)
  39     EVT_CLOSE   (wxDialog::OnCloseWindow)
  40 END_EVENT_TABLE()
  41
  42 IMPLEMENT_DYNAMIC_CLASS(wxDialog,wxTopLevelWindow)
  43
  44 void wxDialog::Init()
  45 {
  46     m_returnCode = 0;
  47     m_sizeSet = false;
  48     m_modalShowing = false;
  49     m_themeEnabled = true;
  50 }
  51
  52 wxDialog::wxDialog( wxWindow *parent,
  53                     wxWindowID id, const wxString &title,
  54                     const wxPoint &pos, const wxSize &size,
  55                     long style, const wxString &name )
  56 {
  57     Init();
  58
  59     (void)Create( parent, id, title, pos, size, style, name );
  60 }
  61
  62 bool wxDialog::Create( wxWindow *parent,
  63                        wxWindowID id, const wxString &title,
  64                        const wxPoint &pos, const wxSize &size,
  65                        long style, const wxString &name )
  66 {
  67     SetExtraStyle(GetExtraStyle() | wxTOPLEVEL_EX_DIALOG);
  68
  69     // all dialogs should have tab traversal enabled
  70     style |= wxTAB_TRAVERSAL;
  71
  72     return wxTopLevelWindow::Create(parent, id, title, pos, size, style, name);
  73 }
  74
  75 void wxDialog::OnApply( wxCommandEvent &WXUNUSED(event) )
  76 {
  77     if (Validate())
  78         TransferDataFromWindow();
  79 }
  80
  81 void wxDialog::OnCancel( wxCommandEvent &WXUNUSED(event) )
  82 {
  83     if (IsModal())
  84     {
  85         EndModal(wxID_CANCEL);
  86     }
  87     else
  88     {
  89         SetReturnCode(wxID_CANCEL);
  90         Show(false);
  91     }
  92 }
  93
  94 void wxDialog::OnOK( wxCommandEvent &WXUNUSED(event) )
  95 {
  96     if (Validate() && TransferDataFromWindow())
  97     {
  98         if (IsModal())
  99         {
 100             EndModal(wxID_OK);
 101         }
 102         else
 103         {
 104             SetReturnCode(wxID_OK);
 105             Show(false);
 106         }
 107     }
 108 }
 109
 110 void wxDialog::OnPaint( wxPaintEvent& WXUNUSED(event) )
 111 {
 112     // yes
 113 }
 114
 115 void wxDialog::OnCloseWindow(wxCloseEvent& WXUNUSED(event))
 116 {
 117     // We'll send a Cancel message by default,
 118     // which may close the dialog.
 119     // Check for looping if the Cancel event handler calls Close().
 120
 121     // Note that if a cancel button and handler aren't present in the dialog,
 122     // nothing will happen when you close the dialog via the window manager, or
 123     // via Close().
 124     // We wouldn't want to destroy the dialog by default, since the dialog may have been
 125     // created on the stack.
 126     // However, this does mean that calling dialog->Close() won't delete the dialog
 127     // unless the handler for wxID_CANCEL does so. So use Destroy() if you want to be
 128     // sure to destroy the dialog.
 129     // The default OnCancel (above) simply ends a modal dialog, and hides a modeless dialog.
 130
 131     static wxList s_closing;
 132
 133     if (s_closing.Member(this))
 134         return;   // no loops
 135
 136     s_closing.Append(this);
 137
 138     wxCommandEvent cancelEvent(wxEVT_COMMAND_BUTTON_CLICKED, wxID_CANCEL);
 139     cancelEvent.SetEventObject( this );
 140     GetEventHandler()->ProcessEvent(cancelEvent);
 141     s_closing.DeleteObject(this);
 142 }
 143
 144 bool wxDialog::Show( bool show )
 145 {
 146     if (!show && IsModal())
 147     {
 148         EndModal( wxID_CANCEL );
 149     }
 150
 151     if (show && !m_sizeSet)
 152     {
 153         /* by calling GtkOnSize here, we don't have to call
 154            either after showing the frame, which would entail
 155            much ugly flicker nor from within the size_allocate
 156            handler, because GTK 1.1.X forbids that. */
 157
 158         GtkOnSize( m_x, m_y, m_width, m_height );
 159     }
 160
 161     bool ret = wxWindow::Show( show );
 162
 163     if (show) InitDialog();
 164
 165     return ret;
 166 }
 167
 168 bool wxDialog::IsModal() const
 169 {
 170     return m_modalShowing;
 171 }
 172
 173 void wxDialog::SetModal( bool WXUNUSED(flag) )
 174 {
 175     wxFAIL_MSG( wxT("wxDialog:SetModal obsolete now") );
 176 }
 177
 178 int wxDialog::ShowModal()
 179 {
 180     if (IsModal())
 181     {
 182        wxFAIL_MSG( wxT("wxDialog:ShowModal called twice") );
 183        return GetReturnCode();
 184     }
 185
 186     // use the apps top level window as parent if none given unless explicitly
 187     // forbidden
 188     if ( !GetParent() && !(GetWindowStyleFlag() & wxDIALOG_NO_PARENT) )
 189     {
 190         wxWindow *parent = wxTheApp->GetTopWindow();
 191         if ( parent &&
 192                 parent != this &&
 193                     parent->IsBeingDeleted() &&
 194                         !(parent->GetExtraStyle() & wxWS_EX_TRANSIENT) )
 195         {
 196             m_parent = parent;
 197             gtk_window_set_transient_for( GTK_WINDOW(m_widget), GTK_WINDOW(parent->m_widget) );
 198         }
 199     }
 200
 201     wxBusyCursorSuspender cs; // temporarily suppress the busy cursor
 202
 203     Show( true );
 204
 205     m_modalShowing = true;
 206
 207     g_openDialogs++;
 208
 209     gtk_grab_add( m_widget );
 210
 211     wxEventLoop().Run();
 212
 213     gtk_grab_remove( m_widget );
 214
 215     g_openDialogs--;
 216
 217     return GetReturnCode();
 218 }
 219
 220 void wxDialog::EndModal( int retCode )
 221 {
 222     SetReturnCode( retCode );
 223
 224     if (!IsModal())
 225     {
 226         wxFAIL_MSG( wxT("wxDialog:EndModal called twice") );
 227         return;
 228     }
 229
 230     m_modalShowing = false;
 231
 232     gtk_main_quit();
 233
 234     Show( false );
 235 }