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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 IMPLEMENT_DYNAMIC_CLASS(wxDialog,wxTopLevelWindow)
36
37 void wxDialog::Init()
38 {
39 m_modalLoop = NULL;
40 m_returnCode = 0;
41 m_modalShowing = false;
42 m_themeEnabled = true;
43 }
44
45 wxDialog::wxDialog( wxWindow *parent,
46 wxWindowID id, const wxString &title,
47 const wxPoint &pos, const wxSize &size,
48 long style, const wxString &name )
49 {
50 Init();
51
52 (void)Create( parent, id, title, pos, size, style, name );
53 }
54
55 bool wxDialog::Create( wxWindow *parent,
56 wxWindowID id, const wxString &title,
57 const wxPoint &pos, const wxSize &size,
58 long style, const wxString &name )
59 {
60 SetExtraStyle(GetExtraStyle() | wxTOPLEVEL_EX_DIALOG);
61
62 // all dialogs should have tab traversal enabled
63 style |= wxTAB_TRAVERSAL;
64
65 return wxTopLevelWindow::Create(parent, id, title, pos, size, style, name);
66 }
67
68 bool wxDialog::Show( bool show )
69 {
70 if (!show && IsModal())
71 {
72 EndModal( wxID_CANCEL );
73 }
74
75 if (show && CanDoLayoutAdaptation())
76 DoLayoutAdaptation();
77
78 bool ret = wxDialogBase::Show(show);
79
80 if (show)
81 InitDialog();
82
83 return ret;
84 }
85
86 wxDialog::~wxDialog()
87 {
88 // if the dialog is modal, this will end its event loop
89 if ( IsModal() )
90 EndModal(wxID_CANCEL);
91 }
92
93 bool wxDialog::IsModal() const
94 {
95 return m_modalShowing;
96 }
97
98 void wxDialog::SetModal( bool WXUNUSED(flag) )
99 {
100 wxFAIL_MSG( wxT("wxDialog:SetModal obsolete now") );
101 }
102
103 int wxDialog::ShowModal()
104 {
105 wxASSERT_MSG( !IsModal(), "ShowModal() can't be called twice" );
106
107 // release the mouse if it's currently captured as the window having it
108 // will be disabled when this dialog is shown -- but will still keep the
109 // capture making it impossible to do anything in the modal dialog itself
110 wxWindow * const win = wxWindow::GetCapture();
111 if ( win )
112 win->GTKReleaseMouseAndNotify();
113
114 wxWindow * const parent = GetParentForModalDialog();
115 if ( parent )
116 {
117 gtk_window_set_transient_for( GTK_WINDOW(m_widget),
118 GTK_WINDOW(parent->m_widget) );
119 }
120
121 wxBusyCursorSuspender cs; // temporarily suppress the busy cursor
122
123 Show( true );
124
125 m_modalShowing = true;
126
127 wxOpenModalDialogsCount++;
128
129 // NOTE: gtk_window_set_modal internally calls gtk_grab_add() !
130 gtk_window_set_modal(GTK_WINDOW(m_widget), TRUE);
131
132 // Run modal dialog event loop.
133 {
134 wxGUIEventLoopTiedPtr modal(&m_modalLoop, new wxGUIEventLoop());
135 m_modalLoop->Run();
136 }
137
138 gtk_window_set_modal(GTK_WINDOW(m_widget), FALSE);
139
140 wxOpenModalDialogsCount--;
141
142 return GetReturnCode();
143 }
144
145 void wxDialog::EndModal( int retCode )
146 {
147 SetReturnCode( retCode );
148
149 if (!IsModal())
150 {
151 wxFAIL_MSG( "either wxDialog:EndModal called twice or ShowModal wasn't called" );
152 return;
153 }
154
155 m_modalShowing = false;
156
157 // Ensure Exit() is only called once. The dialog's event loop may be terminated
158 // externally due to an uncaught exception.
159 if (m_modalLoop && m_modalLoop->IsRunning())
160 m_modalLoop->Exit();
161
162 Show( false );
163 }