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 "wx/scopedptr.h"
  22
  23 #include <gtk/gtk.h>
  24
  25 // this is defined in src/gtk/toplevel.cpp
  26 extern int wxOpenModalDialogsCount;
  27
  28 wxDEFINE_TIED_SCOPED_PTR_TYPE(wxGUIEventLoop)
  29
  30
  31 //-----------------------------------------------------------------------------
  32 // wxDialog
  33 //-----------------------------------------------------------------------------
  34
  35 void wxDialog::Init()
  36 {
  37     m_modalLoop = NULL;
  38     m_returnCode = 0;
  39     m_modalShowing = false;
  40     m_themeEnabled = true;
  41 }
  42
  43 wxDialog::wxDialog( wxWindow *parent,
  44                     wxWindowID id, const wxString &title,
  45                     const wxPoint &pos, const wxSize &size,
  46                     long style, const wxString &name )
  47 {
  48     Init();
  49
  50     (void)Create( parent, id, title, pos, size, style, name );
  51 }
  52
  53 bool wxDialog::Create( wxWindow *parent,
  54                        wxWindowID id, const wxString &title,
  55                        const wxPoint &pos, const wxSize &size,
  56                        long style, const wxString &name )
  57 {
  58     SetExtraStyle(GetExtraStyle() | wxTOPLEVEL_EX_DIALOG);
  59
  60     // all dialogs should have tab traversal enabled
  61     style |= wxTAB_TRAVERSAL;
  62
  63     return wxTopLevelWindow::Create(parent, id, title, pos, size, style, name);
  64 }
  65
  66 bool wxDialog::Show( bool show )
  67 {
  68     if (!show && IsModal())
  69     {
  70         EndModal( wxID_CANCEL );
  71     }
  72
  73     if (show && CanDoLayoutAdaptation())
  74         DoLayoutAdaptation();
  75
  76     bool ret = wxDialogBase::Show(show);
  77
  78     if (show)
  79         InitDialog();
  80
  81     return ret;
  82 }
  83
  84 wxDialog::~wxDialog()
  85 {
  86     // if the dialog is modal, this will end its event loop
  87     if ( IsModal() )
  88         EndModal(wxID_CANCEL);
  89 }
  90
  91 bool wxDialog::IsModal() const
  92 {
  93     return m_modalShowing;
  94 }
  95
  96 void wxDialog::SetModal( bool WXUNUSED(flag) )
  97 {
  98     wxFAIL_MSG( wxT("wxDialog:SetModal obsolete now") );
  99 }
 100
 101 int wxDialog::ShowModal()
 102 {
 103     wxASSERT_MSG( !IsModal(), "ShowModal() can't be called twice" );
 104
 105     // release the mouse if it's currently captured as the window having it
 106     // will be disabled when this dialog is shown -- but will still keep the
 107     // capture making it impossible to do anything in the modal dialog itself
 108     wxWindow * const win = wxWindow::GetCapture();
 109     if ( win )
 110         win->GTKReleaseMouseAndNotify();
 111
 112     wxWindow * const parent = GetParentForModalDialog();
 113     if ( parent )
 114     {
 115         gtk_window_set_transient_for( GTK_WINDOW(m_widget),
 116                                       GTK_WINDOW(parent->m_widget) );
 117     }
 118
 119     wxBusyCursorSuspender cs; // temporarily suppress the busy cursor
 120
 121     Show( true );
 122
 123     m_modalShowing = true;
 124
 125     wxOpenModalDialogsCount++;
 126
 127     // NOTE: gtk_window_set_modal internally calls gtk_grab_add() !
 128     gtk_window_set_modal(GTK_WINDOW(m_widget), TRUE);
 129
 130     // Run modal dialog event loop.
 131     {
 132         wxGUIEventLoopTiedPtr modal(&m_modalLoop, new wxGUIEventLoop());
 133         m_modalLoop->Run();
 134     }
 135
 136     gtk_window_set_modal(GTK_WINDOW(m_widget), FALSE);
 137
 138     wxOpenModalDialogsCount--;
 139
 140     return GetReturnCode();
 141 }
 142
 143 void wxDialog::EndModal( int retCode )
 144 {
 145     SetReturnCode( retCode );
 146
 147     if (!IsModal())
 148     {
 149         wxFAIL_MSG( "either wxDialog:EndModal called twice or ShowModal wasn't called" );
 150         return;
 151     }
 152
 153     m_modalShowing = false;
 154
 155     // Ensure Exit() is only called once. The dialog's event loop may be terminated
 156     // externally due to an uncaught exception.
 157     if (m_modalLoop && m_modalLoop->IsRunning())
 158         m_modalLoop->Exit();
 159
 160     Show( false );
 161 }