src/gtk1/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 #ifdef __GNUG__
  11 #pragma implementation "dialog.h"
  12 #endif
  13
  14 #include "wx/dialog.h"
  15 #include "wx/frame.h"
  16 #include "wx/app.h"
  17 #include "wx/cursor.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 // idle system
  27 //-----------------------------------------------------------------------------
  28
  29 extern void wxapp_install_idle_handler();
  30 extern bool g_isIdle;
  31 extern int g_openDialogs;
  32
  33
  34
  35 //-----------------------------------------------------------------------------
  36 // wxDialog
  37 //-----------------------------------------------------------------------------
  38
  39 BEGIN_EVENT_TABLE(wxDialog,wxDialogBase)
  40     EVT_BUTTON  (wxID_OK,       wxDialog::OnOK)
  41     EVT_BUTTON  (wxID_CANCEL,   wxDialog::OnCancel)
  42     EVT_BUTTON  (wxID_APPLY,    wxDialog::OnApply)
  43     EVT_CLOSE   (wxDialog::OnCloseWindow)
  44 END_EVENT_TABLE()
  45
  46 IMPLEMENT_DYNAMIC_CLASS(wxDialog,wxTopLevelWindow)
  47
  48 void wxDialog::Init()
  49 {
  50     m_returnCode = 0;
  51     m_sizeSet = FALSE;
  52     m_modalShowing = FALSE;
  53     m_themeEnabled = TRUE;
  54 }
  55
  56 wxDialog::wxDialog( wxWindow *parent,
  57                     wxWindowID id, const wxString &title,
  58                     const wxPoint &pos, const wxSize &size,
  59                     long style, const wxString &name )
  60 {
  61     Init();
  62
  63     // all dialogs should have tab traversal enabled
  64     style |= wxTAB_TRAVERSAL;
  65
  66     Create( parent, id, title, pos, size, style, name );
  67 }
  68
  69 bool wxDialog::Create( wxWindow *parent,
  70                        wxWindowID id, const wxString &title,
  71                        const wxPoint &pos, const wxSize &size,
  72                        long style, const wxString &name )
  73 {
  74     SetExtraStyle(GetExtraStyle() | wxTOPLEVEL_EX_DIALOG);
  75
  76     return wxTopLevelWindow::Create(parent, id, title, pos, size, style, name);
  77 }
  78
  79 void wxDialog::OnApply( wxCommandEvent &WXUNUSED(event) )
  80 {
  81     if (Validate()) TransferDataFromWindow();
  82 }
  83
  84 void wxDialog::OnCancel( wxCommandEvent &WXUNUSED(event) )
  85 {
  86     if (IsModal())
  87     {
  88         EndModal(wxID_CANCEL);
  89     }
  90     else
  91     {
  92         SetReturnCode(wxID_CANCEL);
  93         Show(FALSE);
  94     }
  95 }
  96
  97 void wxDialog::OnOK( wxCommandEvent &WXUNUSED(event) )
  98 {
  99     if (Validate() && TransferDataFromWindow())
 100     {
 101         if (IsModal())
 102         {
 103             EndModal(wxID_OK);
 104         }
 105         else
 106         {
 107             SetReturnCode(wxID_OK);
 108             Show(FALSE);
 109         }
 110     }
 111 }
 112
 113 void wxDialog::OnPaint( wxPaintEvent& WXUNUSED(event) )
 114 {
 115     // yes
 116 }
 117
 118 void wxDialog::OnCloseWindow(wxCloseEvent& WXUNUSED(event))
 119 {
 120     // We'll send a Cancel message by default,
 121     // which may close the dialog.
 122     // Check for looping if the Cancel event handler calls Close().
 123
 124     // Note that if a cancel button and handler aren't present in the dialog,
 125     // nothing will happen when you close the dialog via the window manager, or
 126     // via Close().
 127     // We wouldn't want to destroy the dialog by default, since the dialog may have been
 128     // created on the stack.
 129     // However, this does mean that calling dialog->Close() won't delete the dialog
 130     // unless the handler for wxID_CANCEL does so. So use Destroy() if you want to be
 131     // sure to destroy the dialog.
 132     // The default OnCancel (above) simply ends a modal dialog, and hides a modeless dialog.
 133
 134     static wxList s_closing;
 135
 136     if (s_closing.Member(this))
 137         return;   // no loops
 138
 139     s_closing.Append(this);
 140
 141     wxCommandEvent cancelEvent(wxEVT_COMMAND_BUTTON_CLICKED, wxID_CANCEL);
 142     cancelEvent.SetEventObject( this );
 143     GetEventHandler()->ProcessEvent(cancelEvent);
 144     s_closing.DeleteObject(this);
 145 }
 146
 147 bool wxDialog::Show( bool show )
 148 {
 149     if (!show && IsModal())
 150     {
 151         EndModal( wxID_CANCEL );
 152     }
 153
 154     if (show && !m_sizeSet)
 155     {
 156         /* by calling GtkOnSize here, we don't have to call
 157            either after showing the frame, which would entail
 158            much ugly flicker nor from within the size_allocate
 159            handler, because GTK 1.1.X forbids that. */
 160
 161         GtkOnSize( m_x, m_y, m_width, m_height );
 162     }
 163
 164     bool ret = wxWindow::Show( show );
 165
 166     if (show) InitDialog();
 167
 168     return ret;
 169 }
 170
 171 bool wxDialog::IsModal() const
 172 {
 173     return m_modalShowing;
 174 }
 175
 176 void wxDialog::SetModal( bool WXUNUSED(flag) )
 177 {
 178 /*
 179   if (flag)
 180     m_windowStyle |= wxDIALOG_MODAL;
 181   else
 182     if (m_windowStyle & wxDIALOG_MODAL) m_windowStyle -= wxDIALOG_MODAL;
 183 */
 184     wxFAIL_MSG( wxT("wxDialog:SetModal obsolete now") );
 185 }
 186
 187 int wxDialog::ShowModal()
 188 {
 189     if (IsModal())
 190     {
 191        wxFAIL_MSG( wxT("wxDialog:ShowModal called twice") );
 192        return GetReturnCode();
 193     }
 194
 195     // use the apps top level window as parent if none given unless explicitly
 196     // forbidden
 197     if ( !GetParent() && !(GetWindowStyleFlag() & wxDIALOG_NO_PARENT) )
 198     {
 199         wxWindow *parent = wxTheApp->GetTopWindow();
 200         if ( parent && parent != this )
 201         {
 202             m_parent = parent;
 203             gtk_window_set_transient_for( GTK_WINDOW(m_widget), GTK_WINDOW(parent->m_widget) );
 204         }
 205     }
 206
 207     wxBusyCursorSuspender cs; // temporarily suppress the busy cursor
 208
 209     Show( TRUE );
 210
 211     m_modalShowing = TRUE;
 212
 213     g_openDialogs++;
 214
 215     gtk_grab_add( m_widget );
 216     gtk_main();
 217     gtk_grab_remove( m_widget );
 218
 219     g_openDialogs--;
 220
 221     return GetReturnCode();
 222 }
 223
 224 void wxDialog::EndModal( int retCode )
 225 {
 226     SetReturnCode( retCode );
 227
 228     if (!IsModal())
 229     {
 230         wxFAIL_MSG( wxT("wxDialog:EndModal called twice") );
 231         return;
 232     }
 233
 234     m_modalShowing = FALSE;
 235
 236     gtk_main_quit();
 237
 238     Show( FALSE );
 239 }