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 #include "wx/testing.h"
  23
  24 #include <gtk/gtk.h>
  25
  26 // this is defined in src/gtk/toplevel.cpp
  27 extern int wxOpenModalDialogsCount;
  28
  29 wxDEFINE_TIED_SCOPED_PTR_TYPE(wxGUIEventLoop)
  30
  31
  32 //-----------------------------------------------------------------------------
  33 // wxDialog
  34 //-----------------------------------------------------------------------------
  35
  36 void wxDialog::Init()
  37 {
  38     m_modalLoop = NULL;
  39     m_returnCode = 0;
  40     m_modalShowing = false;
  41     m_themeEnabled = true;
  42 }
  43
  44 wxDialog::wxDialog( wxWindow *parent,
  45                     wxWindowID id, const wxString &title,
  46                     const wxPoint &pos, const wxSize &size,
  47                     long style, const wxString &name )
  48 {
  49     Init();
  50
  51     (void)Create( parent, id, title, pos, size, style, name );
  52 }
  53
  54 bool wxDialog::Create( wxWindow *parent,
  55                        wxWindowID id, const wxString &title,
  56                        const wxPoint &pos, const wxSize &size,
  57                        long style, const wxString &name )
  58 {
  59     SetExtraStyle(GetExtraStyle() | wxTOPLEVEL_EX_DIALOG);
  60
  61     // all dialogs should have tab traversal enabled
  62     style |= wxTAB_TRAVERSAL;
  63
  64     return wxTopLevelWindow::Create(parent, id, title, pos, size, style, name);
  65 }
  66
  67 bool wxDialog::Show( bool show )
  68 {
  69     if (!show && IsModal())
  70     {
  71         EndModal( wxID_CANCEL );
  72     }
  73
  74     if (show && CanDoLayoutAdaptation())
  75         DoLayoutAdaptation();
  76
  77     bool ret = wxDialogBase::Show(show);
  78
  79     if (show)
  80         InitDialog();
  81
  82     return ret;
  83 }
  84
  85 wxDialog::~wxDialog()
  86 {
  87     // if the dialog is modal, this will end its event loop
  88     if ( IsModal() )
  89         EndModal(wxID_CANCEL);
  90 }
  91
  92 bool wxDialog::IsModal() const
  93 {
  94     return m_modalShowing;
  95 }
  96
  97 void wxDialog::SetModal( bool WXUNUSED(flag) )
  98 {
  99     wxFAIL_MSG( wxT("wxDialog:SetModal obsolete now") );
 100 }
 101
 102 int wxDialog::ShowModal()
 103 {
 104     WX_TESTING_SHOW_MODAL_HOOK();
 105
 106     wxASSERT_MSG( !IsModal(), "ShowModal() can't be called twice" );
 107
 108     // release the mouse if it's currently captured as the window having it
 109     // will be disabled when this dialog is shown -- but will still keep the
 110     // capture making it impossible to do anything in the modal dialog itself
 111     wxWindow * const win = wxWindow::GetCapture();
 112     if ( win )
 113         win->GTKReleaseMouseAndNotify();
 114
 115     wxWindow * const parent = GetParentForModalDialog();
 116     if ( parent )
 117     {
 118         gtk_window_set_transient_for( GTK_WINDOW(m_widget),
 119                                       GTK_WINDOW(parent->m_widget) );
 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     // Run modal dialog event loop.
 134     {
 135         wxGUIEventLoopTiedPtr modal(&m_modalLoop, new wxGUIEventLoop());
 136         m_modalLoop->Run();
 137     }
 138
 139     gtk_window_set_modal(GTK_WINDOW(m_widget), FALSE);
 140
 141     wxOpenModalDialogsCount--;
 142
 143     return GetReturnCode();
 144 }
 145
 146 void wxDialog::EndModal( int retCode )
 147 {
 148     SetReturnCode( retCode );
 149
 150     if (!IsModal())
 151     {
 152         wxFAIL_MSG( "either wxDialog:EndModal called twice or ShowModal wasn't called" );
 153         return;
 154     }
 155
 156     m_modalShowing = false;
 157
 158     // Ensure Exit() is only called once. The dialog's event loop may be terminated
 159     // externally due to an uncaught exception.
 160     if (m_modalLoop && m_modalLoop->IsRunning())
 161         m_modalLoop->Exit();
 162
 163     Show( false );
 164 }