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