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1 | ///////////////////////////////////////////////////////////////////////////// | |
2 | // Name: src/univ/dialog.cpp | |
3 | // Author: Robert Roebling, Vaclav Slavik | |
4 | // Id: $Id$ | |
5 | // Copyright: (c) 2001 SciTech Software, Inc. (www.scitechsoft.com) | |
6 | // Licence: wxWindows licence | |
7 | ///////////////////////////////////////////////////////////////////////////// | |
8 | ||
9 | #ifdef __GNUG__ | |
10 | #pragma implementation "univdialog.h" | |
11 | #endif | |
12 | ||
13 | #include "wx/dialog.h" | |
14 | #include "wx/utils.h" | |
15 | #include "wx/evtloop.h" | |
16 | #include "wx/app.h" | |
17 | ||
18 | //----------------------------------------------------------------------------- | |
19 | // wxDialog | |
20 | //----------------------------------------------------------------------------- | |
21 | ||
22 | BEGIN_EVENT_TABLE(wxDialog,wxDialogBase) | |
23 | EVT_BUTTON (wxID_OK, wxDialog::OnOK) | |
24 | EVT_BUTTON (wxID_CANCEL, wxDialog::OnCancel) | |
25 | EVT_BUTTON (wxID_APPLY, wxDialog::OnApply) | |
26 | EVT_CLOSE (wxDialog::OnCloseWindow) | |
27 | END_EVENT_TABLE() | |
28 | ||
29 | IMPLEMENT_DYNAMIC_CLASS(wxDialog,wxTopLevelWindow) | |
30 | ||
31 | void wxDialog::Init() | |
32 | { | |
33 | m_returnCode = 0; | |
34 | m_windowDisabler = NULL; | |
35 | m_eventLoop = NULL; | |
36 | m_isShowingModal = FALSE; | |
37 | } | |
38 | ||
39 | wxDialog::~wxDialog() | |
40 | { | |
41 | delete m_eventLoop; | |
42 | } | |
43 | ||
44 | bool wxDialog::Create(wxWindow *parent, | |
45 | wxWindowID id, const wxString &title, | |
46 | const wxPoint &pos, const wxSize &size, | |
47 | long style, const wxString &name) | |
48 | { | |
49 | SetExtraStyle(GetExtraStyle() | wxTOPLEVEL_EX_DIALOG); | |
50 | ||
51 | // all dialogs should have tab traversal enabled | |
52 | style |= wxTAB_TRAVERSAL; | |
53 | ||
54 | return wxTopLevelWindow::Create(parent, id, title, pos, size, style, name); | |
55 | } | |
56 | ||
57 | void wxDialog::OnApply(wxCommandEvent &WXUNUSED(event)) | |
58 | { | |
59 | if ( Validate() ) | |
60 | TransferDataFromWindow(); | |
61 | } | |
62 | ||
63 | void wxDialog::OnCancel(wxCommandEvent &WXUNUSED(event)) | |
64 | { | |
65 | if ( IsModal() ) | |
66 | { | |
67 | EndModal(wxID_CANCEL); | |
68 | } | |
69 | else | |
70 | { | |
71 | SetReturnCode(wxID_CANCEL); | |
72 | Show(FALSE); | |
73 | } | |
74 | } | |
75 | ||
76 | void wxDialog::OnOK(wxCommandEvent &WXUNUSED(event)) | |
77 | { | |
78 | if ( Validate() && TransferDataFromWindow() ) | |
79 | { | |
80 | if ( IsModal() ) | |
81 | { | |
82 | EndModal(wxID_OK); | |
83 | } | |
84 | else | |
85 | { | |
86 | SetReturnCode(wxID_OK); | |
87 | Show(FALSE); | |
88 | } | |
89 | } | |
90 | } | |
91 | ||
92 | void wxDialog::OnCloseWindow(wxCloseEvent& WXUNUSED(event)) | |
93 | { | |
94 | // We'll send a Cancel message by default, | |
95 | // which may close the dialog. | |
96 | // Check for looping if the Cancel event handler calls Close(). | |
97 | ||
98 | // Note that if a cancel button and handler aren't present in the dialog, | |
99 | // nothing will happen when you close the dialog via the window manager, or | |
100 | // via Close(). | |
101 | // We wouldn't want to destroy the dialog by default, since the dialog may have been | |
102 | // created on the stack. | |
103 | // However, this does mean that calling dialog->Close() won't delete the dialog | |
104 | // unless the handler for wxID_CANCEL does so. So use Destroy() if you want to be | |
105 | // sure to destroy the dialog. | |
106 | // The default OnCancel (above) simply ends a modal dialog, and hides a modeless dialog. | |
107 | ||
108 | static wxList s_closing; | |
109 | ||
110 | if (s_closing.Member(this)) | |
111 | return; // no loops | |
112 | ||
113 | s_closing.Append(this); | |
114 | ||
115 | wxCommandEvent cancelEvent(wxEVT_COMMAND_BUTTON_CLICKED, wxID_CANCEL); | |
116 | cancelEvent.SetEventObject(this); | |
117 | GetEventHandler()->ProcessEvent(cancelEvent); | |
118 | s_closing.DeleteObject(this); | |
119 | } | |
120 | ||
121 | bool wxDialog::Show(bool show) | |
122 | { | |
123 | if ( !show ) | |
124 | { | |
125 | // if we had disabled other app windows, reenable them back now because | |
126 | // if they stay disabled Windows will activate another window (one | |
127 | // which is enabled, anyhow) and we will lose activation | |
128 | if ( m_windowDisabler ) | |
129 | { | |
130 | delete m_windowDisabler; | |
131 | m_windowDisabler = NULL; | |
132 | } | |
133 | ||
134 | if ( IsModal() ) | |
135 | EndModal(wxID_CANCEL); | |
136 | } | |
137 | ||
138 | bool ret = wxDialogBase::Show(show); | |
139 | ||
140 | if ( show ) | |
141 | InitDialog(); | |
142 | ||
143 | return ret; | |
144 | } | |
145 | ||
146 | bool wxDialog::IsModal() const | |
147 | { | |
148 | return m_isShowingModal; | |
149 | } | |
150 | ||
151 | void wxDialog::SetModal(bool WXUNUSED(flag)) | |
152 | { | |
153 | wxFAIL_MSG( wxT("wxDialog:SetModal obsolete now") ); | |
154 | } | |
155 | ||
156 | int wxDialog::ShowModal() | |
157 | { | |
158 | if ( IsModal() ) | |
159 | { | |
160 | wxFAIL_MSG( wxT("wxDialog:ShowModal called twice") ); | |
161 | return GetReturnCode(); | |
162 | } | |
163 | ||
164 | // use the apps top level window as parent if none given unless explicitly | |
165 | // forbidden | |
166 | if ( !GetParent() && !(GetWindowStyleFlag() & wxDIALOG_NO_PARENT) ) | |
167 | { | |
168 | wxWindow *parent = wxTheApp->GetTopWindow(); | |
169 | if ( parent && parent != this ) | |
170 | { | |
171 | m_parent = parent; | |
172 | } | |
173 | } | |
174 | ||
175 | wxBusyCursorSuspender cs; // temporarily suppress the busy cursor | |
176 | ||
177 | Show(TRUE); | |
178 | ||
179 | m_isShowingModal = TRUE; | |
180 | ||
181 | wxASSERT_MSG( !m_windowDisabler, _T("disabling windows twice?") ); | |
182 | ||
183 | m_windowDisabler = new wxWindowDisabler(this); | |
184 | if ( !m_eventLoop ) | |
185 | m_eventLoop = new wxEventLoop; | |
186 | ||
187 | m_eventLoop->Run(); | |
188 | ||
189 | return GetReturnCode(); | |
190 | } | |
191 | ||
192 | void wxDialog::EndModal(int retCode) | |
193 | { | |
194 | wxASSERT_MSG( m_eventLoop, _T("wxDialog is not modal") ); | |
195 | ||
196 | SetReturnCode(retCode); | |
197 | ||
198 | if ( !IsModal() ) | |
199 | { | |
200 | wxFAIL_MSG( wxT("wxDialog:EndModal called twice") ); | |
201 | return; | |
202 | } | |
203 | ||
204 | m_isShowingModal = FALSE; | |
205 | ||
206 | m_eventLoop->Exit(); | |
207 | ||
208 | Show(FALSE); | |
209 | } |