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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 | // ============================================================================ | |
10 | // declarations | |
11 | // ============================================================================ | |
12 | ||
13 | // ---------------------------------------------------------------------------- | |
14 | // headers | |
15 | // ---------------------------------------------------------------------------- | |
16 | ||
17 | #ifdef __GNUG__ | |
18 | #pragma implementation "univdialog.h" | |
19 | #endif | |
20 | ||
21 | // For compilers that support precompilation, includes "wx.h". | |
22 | #include "wx/wxprec.h" | |
23 | ||
24 | #ifdef __BORLANDC__ | |
25 | #pragma hdrstop | |
26 | #endif | |
27 | ||
28 | #ifndef WX_PRECOMP | |
29 | #include "wx/dialog.h" | |
30 | #include "wx/utils.h" | |
31 | #include "wx/app.h" | |
32 | #endif | |
33 | ||
34 | #include "wx/evtloop.h" | |
35 | ||
36 | //----------------------------------------------------------------------------- | |
37 | // wxDialog | |
38 | //----------------------------------------------------------------------------- | |
39 | ||
40 | BEGIN_EVENT_TABLE(wxDialog,wxDialogBase) | |
41 | EVT_BUTTON (wxID_OK, wxDialog::OnOK) | |
42 | EVT_BUTTON (wxID_CANCEL, wxDialog::OnCancel) | |
43 | EVT_BUTTON (wxID_APPLY, wxDialog::OnApply) | |
44 | EVT_CLOSE (wxDialog::OnCloseWindow) | |
45 | END_EVENT_TABLE() | |
46 | ||
47 | IMPLEMENT_DYNAMIC_CLASS(wxDialog,wxTopLevelWindow) | |
48 | ||
49 | void wxDialog::Init() | |
50 | { | |
51 | m_returnCode = 0; | |
52 | m_windowDisabler = NULL; | |
53 | m_eventLoop = NULL; | |
54 | m_isShowingModal = FALSE; | |
55 | } | |
56 | ||
57 | wxDialog::~wxDialog() | |
58 | { | |
59 | delete m_eventLoop; | |
60 | } | |
61 | ||
62 | bool wxDialog::Create(wxWindow *parent, | |
63 | wxWindowID id, const wxString &title, | |
64 | const wxPoint &pos, const wxSize &size, | |
65 | long style, const wxString &name) | |
66 | { | |
67 | SetExtraStyle(GetExtraStyle() | wxTOPLEVEL_EX_DIALOG); | |
68 | ||
69 | // all dialogs should have tab traversal enabled | |
70 | style |= wxTAB_TRAVERSAL; | |
71 | ||
72 | return wxTopLevelWindow::Create(parent, id, title, pos, size, style, name); | |
73 | } | |
74 | ||
75 | void wxDialog::OnApply(wxCommandEvent &WXUNUSED(event)) | |
76 | { | |
77 | if ( Validate() ) | |
78 | TransferDataFromWindow(); | |
79 | } | |
80 | ||
81 | void wxDialog::OnCancel(wxCommandEvent &WXUNUSED(event)) | |
82 | { | |
83 | if ( IsModal() ) | |
84 | { | |
85 | EndModal(wxID_CANCEL); | |
86 | } | |
87 | else | |
88 | { | |
89 | SetReturnCode(wxID_CANCEL); | |
90 | Show(FALSE); | |
91 | } | |
92 | } | |
93 | ||
94 | void wxDialog::OnOK(wxCommandEvent &WXUNUSED(event)) | |
95 | { | |
96 | if ( Validate() && TransferDataFromWindow() ) | |
97 | { | |
98 | if ( IsModal() ) | |
99 | { | |
100 | EndModal(wxID_OK); | |
101 | } | |
102 | else | |
103 | { | |
104 | SetReturnCode(wxID_OK); | |
105 | Show(FALSE); | |
106 | } | |
107 | } | |
108 | } | |
109 | ||
110 | void wxDialog::OnCloseWindow(wxCloseEvent& WXUNUSED(event)) | |
111 | { | |
112 | // We'll send a Cancel message by default, | |
113 | // which may close the dialog. | |
114 | // Check for looping if the Cancel event handler calls Close(). | |
115 | ||
116 | // Note that if a cancel button and handler aren't present in the dialog, | |
117 | // nothing will happen when you close the dialog via the window manager, or | |
118 | // via Close(). | |
119 | // We wouldn't want to destroy the dialog by default, since the dialog may have been | |
120 | // created on the stack. | |
121 | // However, this does mean that calling dialog->Close() won't delete the dialog | |
122 | // unless the handler for wxID_CANCEL does so. So use Destroy() if you want to be | |
123 | // sure to destroy the dialog. | |
124 | // The default OnCancel (above) simply ends a modal dialog, and hides a modeless dialog. | |
125 | ||
126 | static wxList s_closing; | |
127 | ||
128 | if (s_closing.Member(this)) | |
129 | return; // no loops | |
130 | ||
131 | s_closing.Append(this); | |
132 | ||
133 | wxCommandEvent cancelEvent(wxEVT_COMMAND_BUTTON_CLICKED, wxID_CANCEL); | |
134 | cancelEvent.SetEventObject(this); | |
135 | GetEventHandler()->ProcessEvent(cancelEvent); | |
136 | s_closing.DeleteObject(this); | |
137 | } | |
138 | ||
139 | bool wxDialog::Show(bool show) | |
140 | { | |
141 | if ( !show ) | |
142 | { | |
143 | // if we had disabled other app windows, reenable them back now because | |
144 | // if they stay disabled Windows will activate another window (one | |
145 | // which is enabled, anyhow) and we will lose activation | |
146 | if ( m_windowDisabler ) | |
147 | { | |
148 | delete m_windowDisabler; | |
149 | m_windowDisabler = NULL; | |
150 | } | |
151 | ||
152 | if ( IsModal() ) | |
153 | EndModal(wxID_CANCEL); | |
154 | } | |
155 | ||
156 | bool ret = wxDialogBase::Show(show); | |
157 | ||
158 | if ( show ) | |
159 | InitDialog(); | |
160 | ||
161 | return ret; | |
162 | } | |
163 | ||
164 | bool wxDialog::IsModal() const | |
165 | { | |
166 | return m_isShowingModal; | |
167 | } | |
168 | ||
169 | void wxDialog::SetModal(bool WXUNUSED(flag)) | |
170 | { | |
171 | wxFAIL_MSG( wxT("wxDialog:SetModal obsolete now") ); | |
172 | } | |
173 | ||
174 | int wxDialog::ShowModal() | |
175 | { | |
176 | if ( IsModal() ) | |
177 | { | |
178 | wxFAIL_MSG( wxT("wxDialog:ShowModal called twice") ); | |
179 | return GetReturnCode(); | |
180 | } | |
181 | ||
182 | // use the apps top level window as parent if none given unless explicitly | |
183 | // forbidden | |
184 | if ( !GetParent() && !(GetWindowStyleFlag() & wxDIALOG_NO_PARENT) ) | |
185 | { | |
186 | wxWindow *parent = wxTheApp->GetTopWindow(); | |
187 | if ( parent && parent != this ) | |
188 | { | |
189 | m_parent = parent; | |
190 | } | |
191 | } | |
192 | ||
193 | Show(TRUE); | |
194 | ||
195 | m_isShowingModal = TRUE; | |
196 | ||
197 | wxASSERT_MSG( !m_windowDisabler, _T("disabling windows twice?") ); | |
198 | ||
199 | m_windowDisabler = new wxWindowDisabler(this); | |
200 | if ( !m_eventLoop ) | |
201 | m_eventLoop = new wxEventLoop; | |
202 | ||
203 | m_eventLoop->Run(); | |
204 | ||
205 | return GetReturnCode(); | |
206 | } | |
207 | ||
208 | void wxDialog::EndModal(int retCode) | |
209 | { | |
210 | wxASSERT_MSG( m_eventLoop, _T("wxDialog is not modal") ); | |
211 | ||
212 | SetReturnCode(retCode); | |
213 | ||
214 | if ( !IsModal() ) | |
215 | { | |
216 | wxFAIL_MSG( wxT("wxDialog:EndModal called twice") ); | |
217 | return; | |
218 | } | |
219 | ||
220 | m_isShowingModal = FALSE; | |
221 | ||
222 | m_eventLoop->Exit(); | |
223 | ||
224 | Show(FALSE); | |
225 | } |