src/gtk/dialog.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/gtk/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/cursor.h"
  17 #endif // WX_PRECOMP
  18
  19 #include "wx/evtloop.h"
  20
  21 #include <gtk/gtk.h>
  22
  23 // this is defined in src/gtk/toplevel.cpp
  24 extern int wxOpenModalDialogsCount;
  25
  26 //-----------------------------------------------------------------------------
  27 // wxDialog
  28 //-----------------------------------------------------------------------------
  29
  30 IMPLEMENT_DYNAMIC_CLASS(wxDialog,wxTopLevelWindow)
  31
  32 void wxDialog::Init()
  33 {
  34     m_returnCode = 0;
  35     m_modalShowing = false;
  36     m_themeEnabled = true;
  37 }
  38
  39 wxDialog::wxDialog( wxWindow *parent,
  40                     wxWindowID id, const wxString &title,
  41                     const wxPoint &pos, const wxSize &size,
  42                     long style, const wxString &name )
  43 {
  44     Init();
  45
  46     (void)Create( parent, id, title, pos, size, style, name );
  47 }
  48
  49 bool wxDialog::Create( wxWindow *parent,
  50                        wxWindowID id, const wxString &title,
  51                        const wxPoint &pos, const wxSize &size,
  52                        long style, const wxString &name )
  53 {
  54     SetExtraStyle(GetExtraStyle() | wxTOPLEVEL_EX_DIALOG);
  55
  56     // all dialogs should have tab traversal enabled
  57     style |= wxTAB_TRAVERSAL;
  58
  59     return wxTopLevelWindow::Create(parent, id, title, pos, size, style, name);
  60 }
  61
  62 bool wxDialog::Show( bool show )
  63 {
  64     if (!show && IsModal())
  65     {
  66         EndModal( wxID_CANCEL );
  67     }
  68
  69     if (show && CanDoLayoutAdaptation())
  70         DoLayoutAdaptation();
  71
  72     bool ret = wxDialogBase::Show(show);
  73
  74     if (show)
  75         InitDialog();
  76
  77     return ret;
  78 }
  79
  80 wxDialog::~wxDialog()
  81 {
  82     m_isBeingDeleted = true;
  83
  84     // if the dialog is modal, this will end its event loop
  85     if ( IsModal() )
  86         EndModal(wxID_CANCEL);
  87 }
  88
  89 bool wxDialog::IsModal() const
  90 {
  91     return m_modalShowing;
  92 }
  93
  94 void wxDialog::SetModal( bool WXUNUSED(flag) )
  95 {
  96     wxFAIL_MSG( wxT("wxDialog:SetModal obsolete now") );
  97 }
  98
  99 int wxDialog::ShowModal()
 100 {
 101     wxASSERT_MSG( !IsModal(), "ShowModal() can't be called twice" );
 102
 103     // release the mouse if it's currently captured as the window having it
 104     // will be disabled when this dialog is shown -- but will still keep the
 105     // capture making it impossible to do anything in the modal dialog itself
 106     wxWindow * const win = wxWindow::GetCapture();
 107     if ( win )
 108         win->GTKReleaseMouseAndNotify();
 109
 110     // use the apps top level window as parent if none given unless explicitly
 111     // forbidden
 112     if ( !GetParent() && !(GetWindowStyleFlag() & wxDIALOG_NO_PARENT) )
 113     {
 114         wxWindow * const parent = GetParentForModalDialog();
 115         if ( parent && parent != this )
 116         {
 117             gtk_window_set_transient_for( GTK_WINDOW(m_widget),
 118                                           GTK_WINDOW(parent->m_widget) );
 119         }
 120     }
 121
 122     wxBusyCursorSuspender cs; // temporarily suppress the busy cursor
 123
 124     Show( true );
 125
 126     m_modalShowing = true;
 127
 128     wxOpenModalDialogsCount++;
 129
 130     // NOTE: gtk_window_set_modal internally calls gtk_grab_add() !
 131     gtk_window_set_modal(GTK_WINDOW(m_widget), TRUE);
 132
 133     wxGUIEventLoop().Run();
 134
 135     gtk_window_set_modal(GTK_WINDOW(m_widget), FALSE);
 136
 137     wxOpenModalDialogsCount--;
 138
 139     return GetReturnCode();
 140 }
 141
 142 void wxDialog::EndModal( int retCode )
 143 {
 144     SetReturnCode( retCode );
 145
 146     if (!IsModal())
 147     {
 148         wxFAIL_MSG( "either wxDialog:EndModal called twice or ShowModal wasn't called" );
 149         return;
 150     }
 151
 152     m_modalShowing = false;
 153
 154     gtk_main_quit();
 155
 156     Show( false );
 157 }