src/gtk1/dialog.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/gtk1/dialog.cpp
   3 // Purpose:
   4 // Author:      Robert Roebling
   5 // Copyright:   (c) 1998 Robert Roebling
   6 // Licence:     wxWindows licence
   7 /////////////////////////////////////////////////////////////////////////////
   8
   9 // For compilers that support precompilation, includes "wx.h".
  10 #include "wx/wxprec.h"
  11
  12 #include "wx/dialog.h"
  13
  14 #ifndef WX_PRECOMP
  15     #include "wx/app.h"
  16     #include "wx/frame.h"
  17     #include "wx/cursor.h"
  18 #endif // WX_PRECOMP
  19
  20 #include "wx/evtloop.h"
  21 #include "wx/modalhook.h"
  22
  23 #include <gdk/gdk.h>
  24 #include <gtk/gtk.h>
  25 #include <gdk/gdkkeysyms.h>
  26
  27 #include "wx/gtk1/win_gtk.h"
  28
  29 //-----------------------------------------------------------------------------
  30 // global data
  31 //-----------------------------------------------------------------------------
  32
  33 extern int g_openDialogs;
  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 void wxDialog::Init()
  47 {
  48     m_returnCode = 0;
  49     m_sizeSet = false;
  50     m_modalShowing = false;
  51     m_themeEnabled = true;
  52 }
  53
  54 wxDialog::wxDialog( wxWindow *parent,
  55                     wxWindowID id, const wxString &title,
  56                     const wxPoint &pos, const wxSize &size,
  57                     long style, const wxString &name )
  58 {
  59     Init();
  60
  61     (void)Create( parent, id, title, pos, size, style, name );
  62 }
  63
  64 bool wxDialog::Create( wxWindow *parent,
  65                        wxWindowID id, const wxString &title,
  66                        const wxPoint &pos, const wxSize &size,
  67                        long style, const wxString &name )
  68 {
  69     SetExtraStyle(GetExtraStyle() | wxTOPLEVEL_EX_DIALOG);
  70
  71     // all dialogs should have tab traversal enabled
  72     style |= wxTAB_TRAVERSAL;
  73
  74     return wxTopLevelWindow::Create(parent, id, title, pos, size, style, name);
  75 }
  76
  77 void wxDialog::OnApply( wxCommandEvent &WXUNUSED(event) )
  78 {
  79     if (Validate())
  80         TransferDataFromWindow();
  81 }
  82
  83 void wxDialog::OnCancel( wxCommandEvent &WXUNUSED(event) )
  84 {
  85     if (IsModal())
  86     {
  87         EndModal(wxID_CANCEL);
  88     }
  89     else
  90     {
  91         SetReturnCode(wxID_CANCEL);
  92         Show(false);
  93     }
  94 }
  95
  96 void wxDialog::OnOK( wxCommandEvent &WXUNUSED(event) )
  97 {
  98     if (Validate() && TransferDataFromWindow())
  99     {
 100         if (IsModal())
 101         {
 102             EndModal(wxID_OK);
 103         }
 104         else
 105         {
 106             SetReturnCode(wxID_OK);
 107             Show(false);
 108         }
 109     }
 110 }
 111
 112 void wxDialog::OnPaint( wxPaintEvent& WXUNUSED(event) )
 113 {
 114     // yes
 115 }
 116
 117 void wxDialog::OnCloseWindow(wxCloseEvent& WXUNUSED(event))
 118 {
 119     // We'll send a Cancel message by default,
 120     // which may close the dialog.
 121     // Check for looping if the Cancel event handler calls Close().
 122
 123     // Note that if a cancel button and handler aren't present in the dialog,
 124     // nothing will happen when you close the dialog via the window manager, or
 125     // via Close().
 126     // We wouldn't want to destroy the dialog by default, since the dialog may have been
 127     // created on the stack.
 128     // However, this does mean that calling dialog->Close() won't delete the dialog
 129     // unless the handler for wxID_CANCEL does so. So use Destroy() if you want to be
 130     // sure to destroy the dialog.
 131     // The default OnCancel (above) simply ends a modal dialog, and hides a modeless dialog.
 132
 133     static wxList s_closing;
 134
 135     if (s_closing.Member(this))
 136         return;   // no loops
 137
 138     s_closing.Append(this);
 139
 140     wxCommandEvent cancelEvent(wxEVT_BUTTON, wxID_CANCEL);
 141     cancelEvent.SetEventObject( this );
 142     HandleWindowEvent(cancelEvent);
 143     s_closing.DeleteObject(this);
 144 }
 145
 146 bool wxDialog::Show( bool show )
 147 {
 148     if (!show && IsModal())
 149     {
 150         EndModal( wxID_CANCEL );
 151     }
 152
 153     if (show && !m_sizeSet)
 154     {
 155         /* by calling GtkOnSize here, we don't have to call
 156            either after showing the frame, which would entail
 157            much ugly flicker nor from within the size_allocate
 158            handler, because GTK 1.1.X forbids that. */
 159
 160         GtkOnSize( m_x, m_y, m_width, m_height );
 161     }
 162
 163     if (show && CanDoLayoutAdaptation())
 164         DoLayoutAdaptation();
 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     WX_HOOK_MODAL_DIALOG();
 186
 187     if (IsModal())
 188     {
 189        wxFAIL_MSG( wxT("wxDialog:ShowModal called twice") );
 190        return GetReturnCode();
 191     }
 192
 193     // use the apps top level window as parent if none given unless explicitly
 194     // forbidden
 195     wxWindow * const parent = GetParentForModalDialog();
 196     if ( parent )
 197     {
 198         m_parent = parent;
 199         gtk_window_set_transient_for( GTK_WINDOW(m_widget), GTK_WINDOW(parent->m_widget) );
 200     }
 201
 202     wxBusyCursorSuspender cs; // temporarily suppress the busy cursor
 203
 204     Show( true );
 205
 206     m_modalShowing = true;
 207
 208     g_openDialogs++;
 209
 210     gtk_grab_add( m_widget );
 211
 212     wxEventLoop().Run();
 213
 214     gtk_grab_remove( m_widget );
 215
 216     g_openDialogs--;
 217
 218     return GetReturnCode();
 219 }
 220
 221 void wxDialog::EndModal( int retCode )
 222 {
 223     SetReturnCode( retCode );
 224
 225     if (!IsModal())
 226     {
 227         wxFAIL_MSG( wxT("wxDialog:EndModal called twice") );
 228         return;
 229     }
 230
 231     m_modalShowing = false;
 232
 233     gtk_main_quit();
 234
 235     Show( false );
 236 }