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 #if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
  11 #pragma implementation "dialog.h"
  12 #endif
  13
  14 // For compilers that support precompilation, includes "wx.h".
  15 #include "wx/wxprec.h"
  16
  17 #include "wx/dialog.h"
  18 #include "wx/frame.h"
  19 #include "wx/app.h"
  20 #include "wx/cursor.h"
  21
  22 #include <gdk/gdk.h>
  23 #include <gtk/gtk.h>
  24 #include <gdk/gdkkeysyms.h>
  25
  26 #include "wx/gtk/win_gtk.h"
  27
  28 //-----------------------------------------------------------------------------
  29 // idle system
  30 //-----------------------------------------------------------------------------
  31
  32 extern void wxapp_install_idle_handler();
  33 extern bool g_isIdle;
  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 IMPLEMENT_DYNAMIC_CLASS(wxDialog,wxTopLevelWindow)
  48
  49 void wxDialog::Init()
  50 {
  51     m_returnCode = 0;
  52     m_sizeSet = FALSE;
  53     m_modalShowing = FALSE;
  54     m_themeEnabled = TRUE;
  55 }
  56
  57 wxDialog::wxDialog( wxWindow *parent,
  58                     wxWindowID id, const wxString &title,
  59                     const wxPoint &pos, const wxSize &size,
  60                     long style, const wxString &name )
  61 {
  62     Init();
  63
  64     (void)Create( parent, id, title, pos, size, style, name );
  65 }
  66
  67 bool wxDialog::Create( wxWindow *parent,
  68                        wxWindowID id, const wxString &title,
  69                        const wxPoint &pos, const wxSize &size,
  70                        long style, const wxString &name )
  71 {
  72     SetExtraStyle(GetExtraStyle() | wxTOPLEVEL_EX_DIALOG);
  73
  74     // all dialogs should have tab traversal enabled
  75     style |= wxTAB_TRAVERSAL;
  76
  77     return wxTopLevelWindow::Create(parent, id, title, pos, size, style, name);
  78 }
  79
  80 void wxDialog::OnApply( wxCommandEvent &WXUNUSED(event) )
  81 {
  82     if (Validate())
  83         TransferDataFromWindow();
  84 }
  85
  86 void wxDialog::OnCancel( wxCommandEvent &WXUNUSED(event) )
  87 {
  88     if (IsModal())
  89     {
  90         EndModal(wxID_CANCEL);
  91     }
  92     else
  93     {
  94         SetReturnCode(wxID_CANCEL);
  95         Show(FALSE);
  96     }
  97 }
  98
  99 void wxDialog::OnOK( wxCommandEvent &WXUNUSED(event) )
 100 {
 101     if (Validate() && TransferDataFromWindow())
 102     {
 103         if (IsModal())
 104         {
 105             EndModal(wxID_OK);
 106         }
 107         else
 108         {
 109             SetReturnCode(wxID_OK);
 110             Show(FALSE);
 111         }
 112     }
 113 }
 114
 115 void wxDialog::OnPaint( wxPaintEvent& WXUNUSED(event) )
 116 {
 117     // yes
 118 }
 119
 120 void wxDialog::OnCloseWindow(wxCloseEvent& WXUNUSED(event))
 121 {
 122     // We'll send a Cancel message by default,
 123     // which may close the dialog.
 124     // Check for looping if the Cancel event handler calls Close().
 125
 126     // Note that if a cancel button and handler aren't present in the dialog,
 127     // nothing will happen when you close the dialog via the window manager, or
 128     // via Close().
 129     // We wouldn't want to destroy the dialog by default, since the dialog may have been
 130     // created on the stack.
 131     // However, this does mean that calling dialog->Close() won't delete the dialog
 132     // unless the handler for wxID_CANCEL does so. So use Destroy() if you want to be
 133     // sure to destroy the dialog.
 134     // The default OnCancel (above) simply ends a modal dialog, and hides a modeless dialog.
 135
 136     static wxList s_closing;
 137
 138     if (s_closing.Member(this))
 139         return;   // no loops
 140
 141     s_closing.Append(this);
 142
 143     wxCommandEvent cancelEvent(wxEVT_COMMAND_BUTTON_CLICKED, wxID_CANCEL);
 144     cancelEvent.SetEventObject( this );
 145     GetEventHandler()->ProcessEvent(cancelEvent);
 146     s_closing.DeleteObject(this);
 147 }
 148
 149 bool wxDialog::Show( bool show )
 150 {
 151     if (!show && IsModal())
 152     {
 153         EndModal( wxID_CANCEL );
 154     }
 155
 156     if (show && !m_sizeSet)
 157     {
 158         /* by calling GtkOnSize here, we don't have to call
 159            either after showing the frame, which would entail
 160            much ugly flicker nor from within the size_allocate
 161            handler, because GTK 1.1.X forbids that. */
 162
 163         GtkOnSize( m_x, m_y, m_width, m_height );
 164     }
 165
 166     bool ret = wxWindow::Show( show );
 167
 168     if (show) InitDialog();
 169
 170     return ret;
 171 }
 172
 173 bool wxDialog::IsModal() const
 174 {
 175     return m_modalShowing;
 176 }
 177
 178 void wxDialog::SetModal( bool WXUNUSED(flag) )
 179 {
 180     wxFAIL_MSG( wxT("wxDialog:SetModal obsolete now") );
 181 }
 182
 183 int wxDialog::ShowModal()
 184 {
 185     if (IsModal())
 186     {
 187        wxFAIL_MSG( wxT("wxDialog:ShowModal called twice") );
 188        return GetReturnCode();
 189     }
 190
 191     // use the apps top level window as parent if none given unless explicitly
 192     // forbidden
 193     if ( !GetParent() && !(GetWindowStyleFlag() & wxDIALOG_NO_PARENT) )
 194     {
 195         wxWindow *parent = wxTheApp->GetTopWindow();
 196         if ( parent &&
 197                 parent != this &&
 198                     parent->IsBeingDeleted() &&
 199                         !(parent->GetExtraStyle() & wxWS_EX_TRANSIENT) )
 200         {
 201             m_parent = parent;
 202             gtk_window_set_transient_for( GTK_WINDOW(m_widget), GTK_WINDOW(parent->m_widget) );
 203         }
 204     }
 205
 206     wxBusyCursorSuspender cs; // temporarily suppress the busy cursor
 207
 208     Show( TRUE );
 209
 210     SetFocus();
 211
 212     m_modalShowing = TRUE;
 213
 214     g_openDialogs++;
 215
 216     gtk_grab_add( m_widget );
 217     gtk_main();
 218     gtk_grab_remove( m_widget );
 219
 220     g_openDialogs--;
 221
 222     return GetReturnCode();
 223 }
 224
 225 void wxDialog::EndModal( int retCode )
 226 {
 227     SetReturnCode( retCode );
 228
 229     if (!IsModal())
 230     {
 231         wxFAIL_MSG( wxT("wxDialog:EndModal called twice") );
 232         return;
 233     }
 234
 235     m_modalShowing = FALSE;
 236
 237     gtk_main_quit();
 238
 239     Show( FALSE );
 240 }