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 #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 // global data
  30 //-----------------------------------------------------------------------------
  31
  32 extern int g_openDialogs;
  33
  34 //-----------------------------------------------------------------------------
  35 // wxDialog
  36 //-----------------------------------------------------------------------------
  37
  38 BEGIN_EVENT_TABLE(wxDialog,wxDialogBase)
  39     EVT_BUTTON  (wxID_OK,       wxDialog::OnOK)
  40     EVT_BUTTON  (wxID_CANCEL,   wxDialog::OnCancel)
  41     EVT_BUTTON  (wxID_APPLY,    wxDialog::OnApply)
  42     EVT_CLOSE   (wxDialog::OnCloseWindow)
  43 END_EVENT_TABLE()
  44
  45 IMPLEMENT_DYNAMIC_CLASS(wxDialog,wxTopLevelWindow)
  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_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     wxFAIL_MSG( wxT("wxDialog:SetModal obsolete now") );
 179 }
 180
 181 int wxDialog::ShowModal()
 182 {
 183     if (IsModal())
 184     {
 185        wxFAIL_MSG( wxT("wxDialog:ShowModal called twice") );
 186        return GetReturnCode();
 187     }
 188
 189     // use the apps top level window as parent if none given unless explicitly
 190     // forbidden
 191     if ( !GetParent() && !(GetWindowStyleFlag() & wxDIALOG_NO_PARENT) )
 192     {
 193         wxWindow *parent = wxTheApp->GetTopWindow();
 194         if ( parent &&
 195                 parent != this &&
 196                     parent->IsBeingDeleted() &&
 197                         !(parent->GetExtraStyle() & wxWS_EX_TRANSIENT) )
 198         {
 199             m_parent = parent;
 200             gtk_window_set_transient_for( GTK_WINDOW(m_widget), GTK_WINDOW(parent->m_widget) );
 201         }
 202     }
 203
 204     wxBusyCursorSuspender cs; // temporarily suppress the busy cursor
 205
 206     Show( true );
 207
 208     SetFocus();
 209
 210     m_modalShowing = true;
 211
 212     g_openDialogs++;
 213
 214     gtk_grab_add( m_widget );
 215     gtk_main();
 216     gtk_grab_remove( m_widget );
 217
 218     g_openDialogs--;
 219
 220     return GetReturnCode();
 221 }
 222
 223 void wxDialog::EndModal( int retCode )
 224 {
 225     SetReturnCode( retCode );
 226
 227     if (!IsModal())
 228     {
 229         wxFAIL_MSG( wxT("wxDialog:EndModal called twice") );
 230         return;
 231     }
 232
 233     m_modalShowing = false;
 234
 235     gtk_main_quit();
 236
 237     Show( false );
 238 }