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1 /////////////////////////////////////////////////////////////////////////////
2 // Name: src/os2/dialog.cpp
3 // Purpose: wxDialog class
4 // Author: David Webster
5 // Modified by:
6 // Created: 10/14/99
7 // RCS-ID: $Id$
8 // Copyright: (c) David Webster
9 // Licence: wxWindows licence
10 /////////////////////////////////////////////////////////////////////////////
11
12 // For compilers that support precompilation, includes "wx.h".
13 #include "wx/wxprec.h"
14
15 #include "wx/dialog.h"
16
17 #ifndef WX_PRECOMP
18 #include "wx/utils.h"
19 #include "wx/frame.h"
20 #include "wx/app.h"
21 #include "wx/settings.h"
22 #include "wx/intl.h"
23 #include "wx/log.h"
24 #endif
25
26 #include "wx/os2/private.h"
27 #include "wx/evtloop.h"
28 #include "wx/scopedptr.h"
29
30 #define wxDIALOG_DEFAULT_X 300
31 #define wxDIALOG_DEFAULT_Y 300
32
33 #define wxDIALOG_DEFAULT_WIDTH 500
34 #define wxDIALOG_DEFAULT_HEIGHT 500
35
36
37 // ----------------------------------------------------------------------------
38 // wxDialogModalData
39 // ----------------------------------------------------------------------------
40
41 // this is simply a container for any data we need to implement modality which
42 // allows us to avoid changing wxDialog each time the implementation changes
43 class wxDialogModalData
44 {
45 public:
46 wxDialogModalData(wxDialog *dialog) : m_evtLoop(dialog) { }
47
48 void RunLoop()
49 {
50 m_evtLoop.Run();
51 }
52
53 void ExitLoop()
54 {
55 m_evtLoop.Exit();
56 }
57
58 private:
59 wxModalEventLoop m_evtLoop;
60 };
61
62 wxDEFINE_TIED_SCOPED_PTR_TYPE(wxDialogModalData);
63
64 // ============================================================================
65 // implementation
66 // ============================================================================
67
68 // ----------------------------------------------------------------------------
69 // wxDialog construction
70 // ----------------------------------------------------------------------------
71
72 void wxDialog::Init()
73 {
74 m_pOldFocus = NULL;
75 m_isShown = false;
76 m_pWindowDisabler = NULL;
77 m_modalData = NULL;
78 SetBackgroundColour(wxSystemSettings::GetColour(wxSYS_COLOUR_3DFACE));
79 } // end of wxDialog::Init
80
81 bool wxDialog::Create( wxWindow* pParent,
82 wxWindowID vId,
83 const wxString& rsTitle,
84 const wxPoint& rPos,
85 const wxSize& rSize,
86 long lStyle,
87 const wxString& rsName )
88 {
89 Init();
90 SetExtraStyle(GetExtraStyle() | wxTOPLEVEL_EX_DIALOG);
91
92 //
93 // Save focus before doing anything which can potentially change it
94 //
95 m_pOldFocus = FindFocus();
96
97 //
98 // All dialogs should really have this style
99 //
100 lStyle |= wxTAB_TRAVERSAL;
101
102 if (!wxTopLevelWindow::Create( pParent
103 ,vId
104 ,rsTitle
105 ,rPos
106 ,rSize
107 ,lStyle
108 ,rsName
109 ))
110 return false;
111
112 SetFont(wxSystemSettings::GetFont(wxSYS_DEFAULT_GUI_FONT));
113
114 //
115 // Must defer setting the title until after dialog is created and sized
116 //
117 if ( !rsTitle.empty() )
118 SetTitle(rsTitle);
119 return true;
120 } // end of wxDialog::Create
121
122 #if WXWIN_COMPATIBILITY_2_6
123
124 // deprecated ctor
125 wxDialog::wxDialog(wxWindow *parent,
126 const wxString& title,
127 bool WXUNUSED(modal),
128 int x,
129 int y,
130 int w,
131 int h,
132 long style,
133 const wxString& name)
134 {
135 Init();
136
137 Create(parent, wxID_ANY, title, wxPoint(x, y), wxSize(w, h), style, name);
138 }
139
140 void wxDialog::SetModal(bool WXUNUSED(bFlag))
141 {
142 // nothing to do, obsolete method
143 } // end of wxDialog::SetModal
144
145 #endif // WXWIN_COMPATIBILITY_2_6
146
147 wxDialog::~wxDialog()
148 {
149 SendDestroyEvent();
150
151 // this will also reenable all the other windows for a modal dialog
152 Show(false);
153 } // end of wxDialog::~wxDialog
154
155 // ----------------------------------------------------------------------------
156 // showing the dialogs
157 // ----------------------------------------------------------------------------
158
159 #if WXWIN_COMPATIBILITY_2_6
160
161 bool wxDialog::IsModalShowing() const
162 {
163 return IsModal();
164 } // end of wxDialog::IsModalShowing
165
166 #endif // WXWIN_COMPATIBILITY_2_6
167
168 bool wxDialog::Show( bool bShow )
169 {
170 if ( bShow == IsShown() )
171 return false;
172
173 if (!bShow && m_modalData )
174 {
175 // we need to do this before calling wxDialogBase version because if we
176 // had disabled other app windows, they must be reenabled right now as
177 // if they stay disabled Windows will activate another window (one
178 // which is enabled, anyhow) when we're hidden in the base class Show()
179 // and we will lose activation
180 m_modalData->ExitLoop();
181 #if 0
182 wxDELETE(m_pWindowDisabler);
183 #endif
184 }
185
186 if (bShow)
187 {
188 if (CanDoLayoutAdaptation())
189 DoLayoutAdaptation();
190
191 // this usually will result in TransferDataToWindow() being called
192 // which will change the controls values so do it before showing as
193 // otherwise we could have some flicker
194 InitDialog();
195 }
196
197 wxDialogBase::Show(bShow);
198
199 wxString title = GetTitle();
200 if (!title.empty())
201 ::WinSetWindowText((HWND)GetHwnd(), title.c_str());
202
203 if ( bShow )
204 {
205 // dialogs don't get WM_SIZE message after creation unlike most (all?)
206 // other windows and so could start their life not laid out correctly
207 // if we didn't call Layout() from here
208 //
209 // NB: normally we should call it just the first time but doing it
210 // every time is simpler than keeping a flag
211 Layout();
212 }
213
214 return true;
215 } // end of wxDialog::Show
216
217 //
218 // Replacement for Show(true) for modal dialogs - returns return code
219 //
220 int wxDialog::ShowModal()
221 {
222 wxASSERT_MSG( !IsModal(), wxT("wxDialog::ShowModal() reentered?") );
223
224 m_endModalCalled = false;
225
226 Show();
227
228 // EndModal may have been called from InitDialog handler (called from
229 // inside Show()), which would cause an infinite loop if we didn't take it
230 // into account
231 if ( !m_endModalCalled )
232 {
233 // modal dialog needs a parent window, so try to find one
234 wxWindow * const parent = GetParentForModalDialog();
235
236 // remember where the focus was
237 wxWindow *oldFocus = m_pOldFocus;
238 if ( !oldFocus )
239 {
240 // VZ: do we really want to do this?
241 oldFocus = parent;
242 }
243
244 // We have to remember the HWND because we need to check
245 // the HWND still exists (oldFocus can be garbage when the dialog
246 // exits, if it has been destroyed)
247 HWND hwndOldFocus = oldFocus ? GetHwndOf(oldFocus) : NULL;
248
249
250 //
251 // Before entering the modal loop, reset the "is in OnIdle()" flag (see
252 // comment in app.cpp)
253 //
254 extern bool gbInOnIdle;
255 bool bWasInOnIdle = gbInOnIdle;
256
257 gbInOnIdle = false;
258
259 // enter and run the modal loop
260 {
261 wxDialogModalDataTiedPtr modalData(&m_modalData,
262 new wxDialogModalData(this));
263 modalData->RunLoop();
264 }
265 gbInOnIdle = bWasInOnIdle;
266
267 // and restore focus
268 // Note that this code MUST NOT access the dialog object's data
269 // in case the object has been deleted (which will be the case
270 // for a modal dialog that has been destroyed before calling EndModal).
271 if ( oldFocus && (oldFocus != this) && ::WinIsWindow(vHabmain, hwndOldFocus))
272 {
273 // This is likely to prove that the object still exists
274 if (wxFindWinFromHandle((WXHWND) hwndOldFocus) == oldFocus)
275 oldFocus->SetFocus();
276 }
277 }
278
279 return GetReturnCode();
280 } // end of wxDialog::ShowModal
281
282 void wxDialog::EndModal(
283 int nRetCode
284 )
285 {
286 wxASSERT_MSG( IsModal(), wxT("EndModal() called for non modal dialog") );
287
288 m_endModalCalled = true;
289 SetReturnCode(nRetCode);
290
291 Hide();
292 } // end of wxDialog::EndModal
293
294 MRESULT wxDialog::OS2WindowProc( WXUINT uMessage, WXWPARAM wParam, WXLPARAM lParam )
295 {
296 MRESULT rc = 0;
297 bool bProcessed = false;
298
299 switch (uMessage)
300 {
301 case WM_CLOSE:
302 //
303 // If we can't close, tell the system that we processed the
304 // message - otherwise it would close us
305 //
306 bProcessed = !Close();
307 break;
308 }
309
310 if (!bProcessed)
311 rc = wxWindow::OS2WindowProc( uMessage
312 ,wParam
313 ,lParam
314 );
315 return rc;
316 } // end of wxDialog::OS2WindowProc