src/gtk1/dialog.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/gtk1/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
  15 #ifndef WX_PRECOMP
  16     #include "wx/app.h"
  17     #include "wx/frame.h"
  18     #include "wx/cursor.h"
  19 #endif // WX_PRECOMP
  20
  21 #include "wx/evtloop.h"
  22 #include "wx/modalhook.h"
  23
  24 #include <gdk/gdk.h>
  25 #include <gtk/gtk.h>
  26 #include <gdk/gdkkeysyms.h>
  27
  28 #include "wx/gtk1/win_gtk.h"
  29
  30 //-----------------------------------------------------------------------------
  31 // global data
  32 //-----------------------------------------------------------------------------
  33
  34 extern int g_openDialogs;
  35
  36 //-----------------------------------------------------------------------------
  37 // wxDialog
  38 //-----------------------------------------------------------------------------
  39
  40 BEGIN_EVENT_TABLE(wxDialog,wxDialogBase)
  41     EVT_BUTTON  (wxID_OK,       wxDialog::OnOK)
  42     EVT_BUTTON  (wxID_CANCEL,   wxDialog::OnCancel)
  43     EVT_BUTTON  (wxID_APPLY,    wxDialog::OnApply)
  44     EVT_CLOSE   (wxDialog::OnCloseWindow)
  45 END_EVENT_TABLE()
  46
  47 void wxDialog::Init()
  48 {
  49     m_returnCode = 0;
  50     m_sizeSet = false;
  51     m_modalShowing = false;
  52     m_themeEnabled = true;
  53 }
  54
  55 wxDialog::wxDialog( wxWindow *parent,
  56                     wxWindowID id, const wxString &title,
  57                     const wxPoint &pos, const wxSize &size,
  58                     long style, const wxString &name )
  59 {
  60     Init();
  61
  62     (void)Create( parent, id, title, pos, size, style, name );
  63 }
  64
  65 bool wxDialog::Create( wxWindow *parent,
  66                        wxWindowID id, const wxString &title,
  67                        const wxPoint &pos, const wxSize &size,
  68                        long style, const wxString &name )
  69 {
  70     SetExtraStyle(GetExtraStyle() | wxTOPLEVEL_EX_DIALOG);
  71
  72     // all dialogs should have tab traversal enabled
  73     style |= wxTAB_TRAVERSAL;
  74
  75     return wxTopLevelWindow::Create(parent, id, title, pos, size, style, name);
  76 }
  77
  78 void wxDialog::OnApply( wxCommandEvent &WXUNUSED(event) )
  79 {
  80     if (Validate())
  81         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_BUTTON, wxID_CANCEL);
 142     cancelEvent.SetEventObject( this );
 143     HandleWindowEvent(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     if (show && CanDoLayoutAdaptation())
 165         DoLayoutAdaptation();
 166
 167     bool ret = wxWindow::Show( show );
 168
 169     if (show) InitDialog();
 170
 171     return ret;
 172 }
 173
 174 bool wxDialog::IsModal() const
 175 {
 176     return m_modalShowing;
 177 }
 178
 179 void wxDialog::SetModal( bool WXUNUSED(flag) )
 180 {
 181     wxFAIL_MSG( wxT("wxDialog:SetModal obsolete now") );
 182 }
 183
 184 int wxDialog::ShowModal()
 185 {
 186     WX_HOOK_MODAL_DIALOG();
 187
 188     if (IsModal())
 189     {
 190        wxFAIL_MSG( wxT("wxDialog:ShowModal called twice") );
 191        return GetReturnCode();
 192     }
 193
 194     // use the apps top level window as parent if none given unless explicitly
 195     // forbidden
 196     wxWindow * const parent = GetParentForModalDialog();
 197     if ( parent )
 198     {
 199         m_parent = parent;
 200         gtk_window_set_transient_for( GTK_WINDOW(m_widget), GTK_WINDOW(parent->m_widget) );
 201     }
 202
 203     wxBusyCursorSuspender cs; // temporarily suppress the busy cursor
 204
 205     Show( true );
 206
 207     m_modalShowing = true;
 208
 209     g_openDialogs++;
 210
 211     gtk_grab_add( m_widget );
 212
 213     wxEventLoop().Run();
 214
 215     gtk_grab_remove( m_widget );
 216
 217     g_openDialogs--;
 218
 219     return GetReturnCode();
 220 }
 221
 222 void wxDialog::EndModal( int retCode )
 223 {
 224     SetReturnCode( retCode );
 225
 226     if (!IsModal())
 227     {
 228         wxFAIL_MSG( wxT("wxDialog:EndModal called twice") );
 229         return;
 230     }
 231
 232     m_modalShowing = false;
 233
 234     gtk_main_quit();
 235
 236     Show( false );
 237 }