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0e320a79 1/////////////////////////////////////////////////////////////////////////////
743e24aa 2// Name: src/os2/dialog.cpp
0e320a79 3// Purpose: wxDialog class
fb46a9a6 4// Author: David Webster
0e320a79 5// Modified by:
fb46a9a6 6// Created: 10/14/99
0e320a79 7// RCS-ID: $Id$
fb46a9a6 8// Copyright: (c) David Webster
65571936 9// Licence: wxWindows licence
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10/////////////////////////////////////////////////////////////////////////////
11
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12// For compilers that support precompilation, includes "wx.h".
13#include "wx/wxprec.h"
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14
15#include "wx/dialog.h"
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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"
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24#endif
25
26#include "wx/os2/private.h"
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27#include "wx/evtloop.h"
28#include "wx/ptr_scpd.h"
27476f73 29
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30#define wxDIALOG_DEFAULT_X 300
31#define wxDIALOG_DEFAULT_Y 300
0e320a79 32
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33#define wxDIALOG_DEFAULT_WIDTH 500
34#define wxDIALOG_DEFAULT_HEIGHT 500
35
5d44b24e 36IMPLEMENT_DYNAMIC_CLASS(wxDialog, wxTopLevelWindow)
27476f73 37
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38// ----------------------------------------------------------------------------
39// wxDialogModalData
40// ----------------------------------------------------------------------------
41
42// this is simply a container for any data we need to implement modality which
43// allows us to avoid changing wxDialog each time the implementation changes
44class wxDialogModalData
45{
46public:
47 wxDialogModalData(wxDialog *dialog) : m_evtLoop(dialog) { }
48
49 void RunLoop()
50 {
51 m_evtLoop.Run();
52 }
53
54 void ExitLoop()
55 {
56 m_evtLoop.Exit();
57 }
58
59private:
60 wxModalEventLoop m_evtLoop;
61};
62
63wxDEFINE_TIED_SCOPED_PTR_TYPE(wxDialogModalData);
64
65// ============================================================================
66// implementation
67// ============================================================================
68
69// ----------------------------------------------------------------------------
70// wxDialog construction
71// ----------------------------------------------------------------------------
72
c9cb56f7 73void wxDialog::Init()
0e320a79 74{
c9cb56f7 75 m_pOldFocus = (wxWindow *)NULL;
743e24aa 76 m_isShown = false;
c9cb56f7 77 m_pWindowDisabler = (wxWindowDisabler *)NULL;
ee22d7f3 78 m_modalData = NULL;
a756f210 79 SetBackgroundColour(wxSystemSettings::GetColour(wxSYS_COLOUR_3DFACE));
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80} // end of wxDialog::Init
81
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82bool wxDialog::Create( wxWindow* pParent,
83 wxWindowID vId,
84 const wxString& rsTitle,
85 const wxPoint& rPos,
86 const wxSize& rSize,
87 long lStyle,
88 const wxString& rsName )
0e320a79 89{
c9cb56f7 90 Init();
5d44b24e 91 SetExtraStyle(GetExtraStyle() | wxTOPLEVEL_EX_DIALOG);
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92
93 //
5d44b24e 94 // Save focus before doing anything which can potentially change it
c9cb56f7 95 //
5d44b24e 96 m_pOldFocus = FindFocus();
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97
98 //
5d44b24e 99 // All dialogs should really have this style
c9cb56f7 100 //
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101 lStyle |= wxTAB_TRAVERSAL;
102
103 if (!wxTopLevelWindow::Create( pParent
104 ,vId
105 ,rsTitle
106 ,rPos
107 ,rSize
108 ,lStyle
109 ,rsName
110 ))
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111 return false;
112
a756f210 113 SetFont(wxSystemSettings::GetFont(wxSYS_DEFAULT_GUI_FONT));
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114
115 //
116 // Must defer setting the title until after dialog is created and sized
117 //
118 if (!rsTitle.IsNull())
119 SetTitle(rsTitle);
6670f564 120 return true;
c9cb56f7 121} // end of wxDialog::Create
0e320a79 122
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123#if WXWIN_COMPATIBILITY_2_6
124
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125// deprecated ctor
126wxDialog::wxDialog(wxWindow *parent,
127 const wxString& title,
128 bool WXUNUSED(modal),
129 int x,
130 int y,
131 int w,
132 int h,
133 long style,
134 const wxString& name)
135{
136 Init();
137
138 Create(parent, wxID_ANY, title, wxPoint(x, y), wxSize(w, h), style, name);
139}
140
89831b54 141void wxDialog::SetModal(bool WXUNUSED(bFlag))
0e320a79 142{
86dc2301 143 // nothing to do, obsolete method
c9cb56f7 144} // end of wxDialog::SetModal
0e320a79 145
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146#endif // WXWIN_COMPATIBILITY_2_6
147
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148wxDialog::~wxDialog()
149{
6670f564 150 m_isBeingDeleted = true;
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151
152 // this will also reenable all the other windows for a modal dialog
153 Show(false);
c9cb56f7 154} // end of wxDialog::~wxDialog
0e320a79 155
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156// ----------------------------------------------------------------------------
157// showing the dialogs
158// ----------------------------------------------------------------------------
27476f73 159
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160#if WXWIN_COMPATIBILITY_2_6
161
c9cb56f7 162bool wxDialog::IsModalShowing() const
0e320a79 163{
86dc2301 164 return IsModal();
c9cb56f7 165} // end of wxDialog::IsModalShowing
0e320a79 166
89831b54 167#endif // WXWIN_COMPATIBILITY_2_6
0e320a79 168
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169wxWindow *wxDialog::FindSuitableParent() const
170{
171 // first try to use the currently active window
172 HWND hwndFg = ::WinQueryActiveWindow(HWND_DESKTOP);
173 wxWindow *parent = hwndFg ? wxFindWinFromHandle((WXHWND)hwndFg)
174 : NULL;
175 if ( !parent )
c9cb56f7 176 {
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177 // next try the main app window
178 parent = wxTheApp->GetTopWindow();
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179 }
180
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181 // finally, check if the parent we found is really suitable
182 if ( !parent || parent == (wxWindow *)this || !parent->IsShown() )
c9cb56f7 183 {
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184 // don't use this one
185 parent = NULL;
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186 }
187
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188 return parent;
189}
c9cb56f7 190
743e24aa 191bool wxDialog::Show( bool bShow )
0e320a79 192{
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193 if ( bShow == IsShown() )
194 return false;
195
196 if (!bShow && m_modalData )
c9cb56f7 197 {
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198 // we need to do this before calling wxDialogBase version because if we
199 // had disabled other app windows, they must be reenabled right now as
c9cb56f7 200 // if they stay disabled Windows will activate another window (one
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201 // which is enabled, anyhow) when we're hidden in the base class Show()
202 // and we will lose activation
203 m_modalData->ExitLoop();
204#if 0
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205 if (m_pWindowDisabler)
206 {
207 delete m_pWindowDisabler;
208 m_pWindowDisabler = NULL;
209 }
86dc2301 210#endif
c9cb56f7 211 }
0e320a79 212
86dc2301 213 if (bShow)
c9cb56f7 214 {
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215 // this usually will result in TransferDataToWindow() being called
216 // which will change the controls values so do it before showing as
217 // otherwise we could have some flicker
218 InitDialog();
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219 }
220
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221 wxDialogBase::Show(bShow);
222
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223 wxString title = GetTitle();
224 if (!title.empty())
225 ::WinSetWindowText((HWND)GetHwnd(), (PSZ)title.c_str());
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226
227 if ( bShow )
c9cb56f7 228 {
ee22d7f3 229 // dialogs don't get WM_SIZE message after creation unlike most (all?)
42782237 230 // other windows and so could start their life not laid out correctly
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231 // if we didn't call Layout() from here
232 //
233 // NB: normally we should call it just the first time but doing it
234 // every time is simpler than keeping a flag
86dc2301 235 Layout();
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236 }
237
86dc2301 238 return true;
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239} // end of wxDialog::Show
240
241//
6670f564 242// Replacement for Show(true) for modal dialogs - returns return code
c9cb56f7 243//
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244int wxDialog::ShowModal()
245{
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246 wxASSERT_MSG( !IsModal(), _T("wxDialog::ShowModal() reentered?") );
247
248 m_endModalCalled = false;
249
250 Show();
251
252 // EndModal may have been called from InitDialog handler (called from
253 // inside Show()), which would cause an infinite loop if we didn't take it
254 // into account
255 if ( !m_endModalCalled )
c9cb56f7 256 {
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257 // modal dialog needs a parent window, so try to find one
258 wxWindow *parent = GetParent();
259 if ( !parent )
260 {
261 parent = FindSuitableParent();
262 }
263
264 // remember where the focus was
265 wxWindow *oldFocus = m_pOldFocus;
266 if ( !oldFocus )
267 {
268 // VZ: do we really want to do this?
269 oldFocus = parent;
270 }
271
272 // We have to remember the HWND because we need to check
273 // the HWND still exists (oldFocus can be garbage when the dialog
274 // exits, if it has been destroyed)
275 HWND hwndOldFocus = oldFocus ? GetHwndOf(oldFocus) : NULL;
276
277
278 //
279 // Before entering the modal loop, reset the "is in OnIdle()" flag (see
280 // comment in app.cpp)
281 //
282 extern bool gbInOnIdle;
283 bool bWasInOnIdle = gbInOnIdle;
284
743e24aa 285 gbInOnIdle = false;
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286
287 // enter and run the modal loop
288 {
289 wxDialogModalDataTiedPtr modalData(&m_modalData,
290 new wxDialogModalData(this));
291 modalData->RunLoop();
292 }
293 gbInOnIdle = bWasInOnIdle;
294
295 // and restore focus
296 // Note that this code MUST NOT access the dialog object's data
297 // in case the object has been deleted (which will be the case
298 // for a modal dialog that has been destroyed before calling EndModal).
299 if ( oldFocus && (oldFocus != this) && ::WinIsWindow(vHabmain, hwndOldFocus))
300 {
301 // This is likely to prove that the object still exists
302 if (wxFindWinFromHandle((WXHWND) hwndOldFocus) == oldFocus)
303 oldFocus->SetFocus();
304 }
c9cb56f7 305 }
86dc2301 306
27476f73 307 return GetReturnCode();
c9cb56f7 308} // end of wxDialog::ShowModal
0e320a79 309
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310void wxDialog::EndModal(
311 int nRetCode
312)
0e320a79 313{
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314 wxASSERT_MSG( IsModal(), _T("EndModal() called for non modal dialog") );
315
316 m_endModalCalled = true;
c9cb56f7 317 SetReturnCode(nRetCode);
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318
319 Hide();
c9cb56f7 320} // end of wxDialog::EndModal
0e320a79 321
743e24aa 322MRESULT wxDialog::OS2WindowProc( WXUINT uMessage, WXWPARAM wParam, WXLPARAM lParam )
0e320a79 323{
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324 MRESULT rc = 0;
325 bool bProcessed = false;
27476f73 326
c9cb56f7 327 switch (uMessage)
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328 {
329 case WM_CLOSE:
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330 //
331 // If we can't close, tell the system that we processed the
27476f73 332 // message - otherwise it would close us
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333 //
334 bProcessed = !Close();
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335 break;
336 }
337
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338 if (!bProcessed)
339 rc = wxWindow::OS2WindowProc( uMessage
340 ,wParam
341 ,lParam
342 );
27476f73 343 return rc;
c9cb56f7 344} // end of wxDialog::OS2WindowProc