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[wxWidgets.git] / src / msw / textctrl.cpp
1 /////////////////////////////////////////////////////////////////////////////
2 // Name: msw/textctrl.cpp
3 // Purpose: wxTextCtrl
4 // Author: Julian Smart
5 // Modified by:
6 // Created: 04/01/98
7 // RCS-ID: $Id$
8 // Copyright: (c) Julian Smart and Markus Holzem
9 // Licence: wxWindows license
10 /////////////////////////////////////////////////////////////////////////////
11
12 // ============================================================================
13 // declarations
14 // ============================================================================
15
16 #ifdef __GNUG__
17 #pragma implementation "textctrl.h"
18 #endif
19
20 // ----------------------------------------------------------------------------
21 // headers
22 // ----------------------------------------------------------------------------
23
24 // For compilers that support precompilation, includes "wx.h".
25 #include "wx/wxprec.h"
26
27 #ifdef __BORLANDC__
28 #pragma hdrstop
29 #endif
30
31 #if wxUSE_TEXTCTRL
32
33 #ifndef WX_PRECOMP
34 #include "wx/textctrl.h"
35 #include "wx/settings.h"
36 #include "wx/brush.h"
37 #include "wx/utils.h"
38 #include "wx/intl.h"
39 #include "wx/log.h"
40 #include "wx/app.h"
41 #include "wx/menu.h"
42 #endif
43
44 #include "wx/module.h"
45
46 #if wxUSE_CLIPBOARD
47 #include "wx/clipbrd.h"
48 #endif
49
50 #include "wx/textfile.h"
51
52 #include <windowsx.h>
53
54 #include "wx/msw/private.h"
55
56 #include <string.h>
57 #include <stdlib.h>
58 #include <sys/types.h>
59
60 #if wxUSE_RICHEDIT
61
62 // old mingw32 has richedit stuff directly in windows.h and doesn't have
63 // richedit.h at all
64 #if !defined(__GNUWIN32_OLD__) || defined(__CYGWIN10__)
65 #include <richedit.h>
66 #endif
67
68 // old mingw32 doesn't define this
69 #ifndef CFM_CHARSET
70 #define CFM_CHARSET 0x08000000
71 #endif // CFM_CHARSET
72
73 #ifndef CFM_BACKCOLOR
74 #define CFM_BACKCOLOR 0x04000000
75 #endif
76
77 // cygwin does not have these defined for richedit
78 #ifndef ENM_LINK
79 #define ENM_LINK 0x04000000
80 #endif
81
82 #ifndef EM_AUTOURLDETECT
83 #define EM_AUTOURLDETECT (WM_USER + 91)
84 #endif
85
86 #ifndef EN_LINK
87 #define EN_LINK 0x070b
88
89 typedef struct _enlink
90 {
91 NMHDR nmhdr;
92 UINT msg;
93 WPARAM wParam;
94 LPARAM lParam;
95 CHARRANGE chrg;
96 } ENLINK;
97 #endif // ENLINK
98
99 #ifndef SF_UNICODE
100 #define SF_UNICODE 0x0010
101 #endif
102
103 // Watcom C++ doesn't define this
104 #ifndef SCF_ALL
105 #define SCF_ALL 0x0004
106 #endif
107
108 #endif // wxUSE_RICHEDIT
109
110 // ----------------------------------------------------------------------------
111 // private functions
112 // ----------------------------------------------------------------------------
113
114 #if wxUSE_RICHEDIT
115
116 DWORD CALLBACK wxRichEditStreamIn(DWORD dwCookie, BYTE *buf, LONG cb, LONG *pcb);
117
118 #endif // wxUSE_RICHEDIT
119
120 // ----------------------------------------------------------------------------
121 // private classes
122 // ----------------------------------------------------------------------------
123
124 #if wxUSE_RICHEDIT
125
126 // this module initializes RichEdit DLL(s) if needed
127 class wxRichEditModule : public wxModule
128 {
129 public:
130 virtual bool OnInit();
131 virtual void OnExit();
132
133 // load the richedit DLL of at least of required version
134 static bool Load(int version = 1);
135
136 private:
137 // the handles to richedit 1.0 and 2.0 (or 3.0) DLLs
138 static HINSTANCE ms_hRichEdit[2];
139
140 DECLARE_DYNAMIC_CLASS(wxRichEditModule)
141 };
142
143 HINSTANCE wxRichEditModule::ms_hRichEdit[2] = { NULL, NULL };
144
145 IMPLEMENT_DYNAMIC_CLASS(wxRichEditModule, wxModule)
146
147 #endif // wxUSE_RICHEDIT
148
149 // ----------------------------------------------------------------------------
150 // event tables and other macros
151 // ----------------------------------------------------------------------------
152
153 IMPLEMENT_DYNAMIC_CLASS(wxTextCtrl, wxControl)
154
155 BEGIN_EVENT_TABLE(wxTextCtrl, wxControl)
156 EVT_CHAR(wxTextCtrl::OnChar)
157 EVT_DROP_FILES(wxTextCtrl::OnDropFiles)
158
159 #if wxUSE_RICHEDIT
160 EVT_RIGHT_UP(wxTextCtrl::OnRightClick)
161 #endif
162
163 EVT_MENU(wxID_CUT, wxTextCtrl::OnCut)
164 EVT_MENU(wxID_COPY, wxTextCtrl::OnCopy)
165 EVT_MENU(wxID_PASTE, wxTextCtrl::OnPaste)
166 EVT_MENU(wxID_UNDO, wxTextCtrl::OnUndo)
167 EVT_MENU(wxID_REDO, wxTextCtrl::OnRedo)
168 EVT_MENU(wxID_CLEAR, wxTextCtrl::OnDelete)
169 EVT_MENU(wxID_SELECTALL, wxTextCtrl::OnSelectAll)
170
171 EVT_UPDATE_UI(wxID_CUT, wxTextCtrl::OnUpdateCut)
172 EVT_UPDATE_UI(wxID_COPY, wxTextCtrl::OnUpdateCopy)
173 EVT_UPDATE_UI(wxID_PASTE, wxTextCtrl::OnUpdatePaste)
174 EVT_UPDATE_UI(wxID_UNDO, wxTextCtrl::OnUpdateUndo)
175 EVT_UPDATE_UI(wxID_REDO, wxTextCtrl::OnUpdateRedo)
176 EVT_UPDATE_UI(wxID_CLEAR, wxTextCtrl::OnUpdateDelete)
177 EVT_UPDATE_UI(wxID_SELECTALL, wxTextCtrl::OnUpdateSelectAll)
178 #ifdef __WIN16__
179 EVT_ERASE_BACKGROUND(wxTextCtrl::OnEraseBackground)
180 #endif
181 END_EVENT_TABLE()
182
183 // ============================================================================
184 // implementation
185 // ============================================================================
186
187 // ----------------------------------------------------------------------------
188 // creation
189 // ----------------------------------------------------------------------------
190
191 void wxTextCtrl::Init()
192 {
193 #if wxUSE_RICHEDIT
194 m_verRichEdit = 0;
195 #endif // wxUSE_RICHEDIT
196
197 m_privateContextMenu = NULL;
198 m_suppressNextUpdate = FALSE;
199 }
200
201 wxTextCtrl::~wxTextCtrl()
202 {
203 if (m_privateContextMenu)
204 {
205 delete m_privateContextMenu;
206 m_privateContextMenu = NULL;
207 }
208 }
209
210 bool wxTextCtrl::Create(wxWindow *parent, wxWindowID id,
211 const wxString& value,
212 const wxPoint& pos,
213 const wxSize& size,
214 long style,
215 const wxValidator& validator,
216 const wxString& name)
217 {
218 // base initialization
219 if ( !CreateBase(parent, id, pos, size, style, validator, name) )
220 return FALSE;
221
222 if ( parent )
223 parent->AddChild(this);
224
225 // translate wxWin style flags to MSW ones
226 WXDWORD msStyle = MSWGetCreateWindowFlags();
227
228 // do create the control - either an EDIT or RICHEDIT
229 wxString windowClass = wxT("EDIT");
230
231 #if wxUSE_RICHEDIT
232 if ( m_windowStyle & wxTE_AUTO_URL )
233 {
234 // automatic URL detection only works in RichEdit 2.0+
235 m_windowStyle |= wxTE_RICH2;
236 }
237
238 if ( m_windowStyle & wxTE_RICH2 )
239 {
240 // using richedit 2.0 implies using wxTE_RICH
241 m_windowStyle |= wxTE_RICH;
242 }
243
244 // we need to load the richedit DLL before creating the rich edit control
245 if ( m_windowStyle & wxTE_RICH )
246 {
247 static bool s_errorGiven = FALSE;// MT-FIXME
248
249 // Which version do we need? Use 1.0 by default because it is much more
250 // like the the standard EDIT or 2.0 if explicitly requested, but use
251 // only 2.0 in Unicode mode as 1.0 doesn't support Unicode at all
252 //
253 // TODO: RichEdit 3.0 is apparently capable of emulating RichEdit 1.0
254 // (and thus EDIT) much better than RichEdit 2.0 so we probably
255 // should use 3.0 if available as it is the best of both worlds -
256 // but as I can't test it right now I don't do it (VZ)
257 #if wxUSE_UNICODE
258 const int verRichEdit = 2;
259 #else // !wxUSE_UNICODE
260 int verRichEdit = m_windowStyle & wxTE_RICH2 ? 2 : 1;
261 #endif // wxUSE_UNICODE/!wxUSE_UNICODE
262
263 // only give the error msg once if the DLL can't be loaded
264 if ( !s_errorGiven )
265 {
266 // try to load the RichEdit DLL (will do nothing if already done)
267 if ( !wxRichEditModule::Load(verRichEdit) )
268 {
269 #if !wxUSE_UNICODE
270 // try another version?
271 verRichEdit = 3 - verRichEdit; // 1 <-> 2
272
273 if ( !wxRichEditModule::Load(verRichEdit) )
274 #endif // wxUSE_UNICODE
275 {
276 wxLogError(_("Impossible to create a rich edit control, using simple text control instead. Please reinstall riched32.dll"));
277
278 s_errorGiven = TRUE;
279 }
280 }
281 }
282
283 // have we managed to load any richedit version?
284 if ( !s_errorGiven )
285 {
286 m_verRichEdit = verRichEdit;
287 if ( m_verRichEdit == 1 )
288 {
289 windowClass = wxT("RICHEDIT");
290 }
291 else
292 {
293 #ifndef RICHEDIT_CLASS
294 wxString RICHEDIT_CLASS;
295 RICHEDIT_CLASS.Printf(_T("RichEdit%d0"), m_verRichEdit);
296 #if wxUSE_UNICODE
297 RICHEDIT_CLASS += _T('W');
298 #else // ANSI
299 RICHEDIT_CLASS += _T('A');
300 #endif // Unicode/ANSI
301 #endif // !RICHEDIT_CLASS
302
303 windowClass = RICHEDIT_CLASS;
304 }
305 }
306 }
307 #endif // wxUSE_RICHEDIT
308
309 // we need to turn '\n's into "\r\n"s for the multiline controls
310 wxString valueWin;
311 if ( m_windowStyle & wxTE_MULTILINE )
312 {
313 valueWin = wxTextFile::Translate(value, wxTextFileType_Dos);
314 }
315 else // single line
316 {
317 valueWin = value;
318 }
319
320 if ( !MSWCreateControl(windowClass, msStyle, pos, size, valueWin) )
321 return FALSE;
322
323 SetBackgroundColour(wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOW));
324
325 #if wxUSE_RICHEDIT
326 if ( IsRich() )
327 {
328 // enable the events we're interested in: we want to get EN_CHANGE as
329 // for the normal controls
330 LPARAM mask = ENM_CHANGE;
331
332 if ( GetRichVersion() == 1 )
333 {
334 // we also need EN_MSGFILTER for richedit 1.0 for the reasons
335 // explained in its handler
336 mask |= ENM_MOUSEEVENTS;
337 }
338 else if ( m_windowStyle & wxTE_AUTO_URL )
339 {
340 mask |= ENM_LINK;
341
342 ::SendMessage(GetHwnd(), EM_AUTOURLDETECT, TRUE, 0);
343 }
344
345 ::SendMessage(GetHwnd(), EM_SETEVENTMASK, 0, mask);
346 }
347 #endif // wxUSE_RICHEDIT
348
349 return TRUE;
350 }
351
352 // Make sure the window style (etc.) reflects the HWND style (roughly)
353 void wxTextCtrl::AdoptAttributesFromHWND()
354 {
355 wxWindow::AdoptAttributesFromHWND();
356
357 HWND hWnd = GetHwnd();
358 long style = ::GetWindowLong(hWnd, GWL_STYLE);
359
360 // retrieve the style to see whether this is an edit or richedit ctrl
361 #if wxUSE_RICHEDIT
362 wxString classname = wxGetWindowClass(GetHWND());
363
364 if ( classname.IsSameAs(_T("EDIT"), FALSE /* no case */) )
365 {
366 m_verRichEdit = 0;
367 }
368 else // rich edit?
369 {
370 wxChar c;
371 if ( wxSscanf(classname, _T("RichEdit%d0%c"), &m_verRichEdit, &c) != 2 )
372 {
373 wxLogDebug(_T("Unknown edit control '%s'."), classname.c_str());
374
375 m_verRichEdit = 0;
376 }
377 }
378 #endif // wxUSE_RICHEDIT
379
380 if (style & ES_MULTILINE)
381 m_windowStyle |= wxTE_MULTILINE;
382 if (style & ES_PASSWORD)
383 m_windowStyle |= wxTE_PASSWORD;
384 if (style & ES_READONLY)
385 m_windowStyle |= wxTE_READONLY;
386 if (style & ES_WANTRETURN)
387 m_windowStyle |= wxTE_PROCESS_ENTER;
388 if (style & ES_CENTER)
389 m_windowStyle |= wxTE_CENTRE;
390 if (style & ES_RIGHT)
391 m_windowStyle |= wxTE_RIGHT;
392 }
393
394 WXDWORD wxTextCtrl::MSWGetStyle(long style, WXDWORD *exstyle) const
395 {
396 // default border for the text controls is the sunken one
397 if ( (style & wxBORDER_MASK) == wxBORDER_DEFAULT )
398 {
399 style |= wxBORDER_SUNKEN;
400 }
401
402 long msStyle = wxControl::MSWGetStyle(style, exstyle);
403
404 // styles which we alaways add by default
405 if ( style & wxTE_MULTILINE )
406 {
407 wxASSERT_MSG( !(style & wxTE_PROCESS_ENTER),
408 wxT("wxTE_PROCESS_ENTER style is ignored for multiline text controls (they always process it)") );
409
410 msStyle |= ES_MULTILINE | ES_WANTRETURN;
411 if ( !(style & wxTE_NO_VSCROLL) )
412 {
413 // always adjust the vertical scrollbar automatically if we have it
414 msStyle |= WS_VSCROLL | ES_AUTOVSCROLL;
415
416 // we have to use this style for the rich edit controls because
417 // without it the vertical scrollbar never appears at all in
418 // richedit 3.0 because of our ECO_NOHIDESEL hack (search for it)
419 if ( style & wxTE_RICH2 )
420 {
421 msStyle |= ES_DISABLENOSCROLL;
422 }
423 }
424
425 style |= wxTE_PROCESS_ENTER;
426 }
427 else // !multiline
428 {
429 // there is really no reason to not have this style for single line
430 // text controls
431 msStyle |= ES_AUTOHSCROLL;
432 }
433
434 // styles which we add depending on the specified wxWindows styles
435 if ( style & wxHSCROLL )
436 {
437 // automatically scroll the control horizontally as necessary
438 msStyle |= WS_HSCROLL;// | ES_AUTOHSCROLL;
439 }
440
441 if ( style & wxTE_READONLY )
442 msStyle |= ES_READONLY;
443
444 if ( style & wxTE_PASSWORD )
445 msStyle |= ES_PASSWORD;
446
447 if ( style & wxTE_NOHIDESEL )
448 msStyle |= ES_NOHIDESEL;
449
450 // note that we can't do do "& wxTE_LEFT" as wxTE_LEFT == 0
451 if ( style & wxTE_CENTRE )
452 msStyle |= ES_CENTER;
453 else if ( style & wxTE_RIGHT )
454 msStyle |= ES_RIGHT;
455 else
456 msStyle |= ES_LEFT; // ES_LEFT if 0 as well but for consistency...
457
458 return msStyle;
459 }
460
461 void wxTextCtrl::SetWindowStyleFlag(long style)
462 {
463 if ( (style & wxBORDER_MASK) == wxBORDER_DEFAULT )
464 style |= wxBORDER_SUNKEN;
465
466 #if wxUSE_RICHEDIT
467 // we have to deal with some styles separately because they can't be
468 // changed by simply calling SetWindowLong(GWL_STYLE) but can be changed
469 // using richedit-specific EM_SETOPTIONS
470 if ( IsRich() &&
471 ((style & wxTE_NOHIDESEL) != (GetWindowStyle() & wxTE_NOHIDESEL)) )
472 {
473 bool set = (style & wxTE_NOHIDESEL) != 0;
474
475 ::SendMessage(GetHwnd(), EM_SETOPTIONS, set ? ECOOP_OR : ECOOP_AND,
476 set ? ECO_NOHIDESEL : ~ECO_NOHIDESEL);
477 }
478 #endif // wxUSE_RICHEDIT
479
480 wxControl::SetWindowStyleFlag(style);
481 }
482
483 // ----------------------------------------------------------------------------
484 // set/get the controls text
485 // ----------------------------------------------------------------------------
486
487 wxString wxTextCtrl::GetValue() const
488 {
489 // range 0..-1 is special for GetRange() and means to retrieve all text
490 return GetRange(0, -1);
491 }
492
493 wxString wxTextCtrl::GetRange(long from, long to) const
494 {
495 wxString str;
496
497 if ( from >= to && to != -1 )
498 {
499 // nothing to retrieve
500 return str;
501 }
502
503 #if wxUSE_RICHEDIT
504 if ( IsRich() )
505 {
506 int len = GetWindowTextLength(GetHwnd());
507 if ( len > from )
508 {
509 // alloc one extra WORD as needed by the control
510 wxChar *p = str.GetWriteBuf(++len);
511
512 TEXTRANGE textRange;
513 textRange.chrg.cpMin = from;
514 textRange.chrg.cpMax = to == -1 ? len : to;
515 textRange.lpstrText = p;
516
517 (void)SendMessage(GetHwnd(), EM_GETTEXTRANGE, 0, (LPARAM)&textRange);
518
519 if ( m_verRichEdit > 1 )
520 {
521 // RichEdit 2.0 uses just CR ('\r') for the newlines which is
522 // neither Unix nor Windows style - convert it to something
523 // reasonable
524 for ( ; *p; p++ )
525 {
526 if ( *p == _T('\r') )
527 *p = _T('\n');
528 }
529 }
530
531 str.UngetWriteBuf();
532
533 if ( m_verRichEdit == 1 )
534 {
535 // convert to the canonical form - see comment below
536 str = wxTextFile::Translate(str, wxTextFileType_Unix);
537 }
538 }
539 //else: no text at all, leave the string empty
540 }
541 else
542 #endif // wxUSE_RICHEDIT
543 {
544 // retrieve all text
545 str = wxGetWindowText(GetHWND());
546
547 // need only a range?
548 if ( from < to )
549 {
550 str = str.Mid(from, to - from);
551 }
552
553 // WM_GETTEXT uses standard DOS CR+LF (\r\n) convention - convert to the
554 // canonical one (same one as above) for consistency with the other kinds
555 // of controls and, more importantly, with the other ports
556 str = wxTextFile::Translate(str, wxTextFileType_Unix);
557 }
558
559 return str;
560 }
561
562 void wxTextCtrl::SetValue(const wxString& value)
563 {
564 // if the text is long enough, it's faster to just set it instead of first
565 // comparing it with the old one (chances are that it will be different
566 // anyhow, this comparison is there to avoid flicker for small single-line
567 // edit controls mostly)
568 if ( (value.length() > 0x400) || (value != GetValue()) )
569 {
570 DoWriteText(value, FALSE /* not selection only */);
571
572 // mark the control as being not dirty - we changed its text, not the
573 // user
574 DiscardEdits();
575
576 // for compatibility, don't move the cursor when doing SetValue()
577 SetInsertionPoint(0);
578 }
579 }
580
581 #if wxUSE_RICHEDIT && (!wxUSE_UNICODE || wxUSE_UNICODE_MSLU)
582
583 DWORD CALLBACK wxRichEditStreamIn(DWORD dwCookie, BYTE *buf, LONG cb, LONG *pcb)
584 {
585 *pcb = 0;
586
587 wchar_t *wbuf = (wchar_t *)buf;
588 const wchar_t *wpc = *(const wchar_t **)dwCookie;
589 while ( cb && *wpc )
590 {
591 *wbuf++ = *wpc++;
592
593 cb -= sizeof(wchar_t);
594 (*pcb) += sizeof(wchar_t);
595 }
596
597 *(const wchar_t **)dwCookie = wpc;
598
599 return 0;
600 }
601
602 extern long wxEncodingToCodepage(wxFontEncoding encoding); // from utils.cpp
603
604 #if wxUSE_UNICODE_MSLU
605 bool wxTextCtrl::StreamIn(const wxString& value,
606 wxFontEncoding WXUNUSED(encoding),
607 bool selectionOnly)
608 {
609 const wchar_t *wpc = value.c_str();
610 #else // !wxUSE_UNICODE_MSLU
611 bool wxTextCtrl::StreamIn(const wxString& value,
612 wxFontEncoding encoding,
613 bool selectionOnly)
614 {
615 // we have to use EM_STREAMIN to force richedit control 2.0+ to show any
616 // text in the non default charset -- otherwise it thinks it knows better
617 // than we do and always shows it in the default one
618
619 // first get the Windows code page for this encoding
620 long codepage = wxEncodingToCodepage(encoding);
621 if ( codepage == -1 )
622 {
623 // unknown encoding
624 return FALSE;
625 }
626
627 // next translate to Unicode using this code page
628 int len = ::MultiByteToWideChar(codepage, 0, value, -1, NULL, 0);
629
630 #if wxUSE_WCHAR_T
631 wxWCharBuffer wchBuf(len);
632 #else
633 wchar_t *wchBuf = (wchar_t *)malloc((len + 1)*sizeof(wchar_t));
634 #endif
635
636 if ( !::MultiByteToWideChar(codepage, 0, value, -1,
637 (wchar_t *)(const wchar_t *)wchBuf, len) )
638 {
639 wxLogLastError(_T("MultiByteToWideChar"));
640 }
641
642 // finally, stream it in the control
643 const wchar_t *wpc = wchBuf;
644 #endif // wxUSE_UNICODE_MSLU
645
646 EDITSTREAM eds;
647 wxZeroMemory(eds);
648 eds.dwCookie = (DWORD)&wpc;
649 // the cast below is needed for broken (very) old mingw32 headers
650 eds.pfnCallback = (EDITSTREAMCALLBACK)wxRichEditStreamIn;
651
652 // we're going to receive 2 EN_CHANGE notifications if we got any selection
653 // (same problem as in DoWriteText())
654 if ( selectionOnly && HasSelection() )
655 {
656 // so suppress one of them
657 m_suppressNextUpdate = TRUE;
658 }
659
660 ::SendMessage(GetHwnd(), EM_STREAMIN,
661 SF_TEXT |
662 SF_UNICODE |
663 (selectionOnly ? SFF_SELECTION : 0),
664 (LPARAM)&eds);
665
666 if ( eds.dwError )
667 {
668 wxLogLastError(_T("EM_STREAMIN"));
669 }
670
671 #if !wxUSE_WCHAR_T
672 free(wchBuf);
673 #endif // !wxUSE_WCHAR_T
674
675 return TRUE;
676 }
677
678 #endif // wxUSE_RICHEDIT
679
680 void wxTextCtrl::WriteText(const wxString& value)
681 {
682 DoWriteText(value);
683 }
684
685 void wxTextCtrl::DoWriteText(const wxString& value, bool selectionOnly)
686 {
687 wxString valueDos;
688 if ( m_windowStyle & wxTE_MULTILINE )
689 valueDos = wxTextFile::Translate(value, wxTextFileType_Dos);
690 else
691 valueDos = value;
692
693 #if wxUSE_RICHEDIT
694 // there are several complications with the rich edit controls here
695 bool done = FALSE;
696 if ( IsRich() )
697 {
698 // first, ensure that the new text will be in the default style
699 if ( !m_defaultStyle.IsDefault() )
700 {
701 long start, end;
702 GetSelection(&start, &end);
703 SetStyle(start, end, m_defaultStyle);
704 }
705
706 #if wxUSE_UNICODE_MSLU
707 // RichEdit doesn't have Unicode version of EM_REPLACESEL on Win9x,
708 // but EM_STREAMIN works
709 if ( wxUsingUnicowsDll() && GetRichVersion() > 1 )
710 {
711 done = StreamIn(valueDos, wxFONTENCODING_SYSTEM, selectionOnly);
712 }
713 #endif // wxUSE_UNICODE_MSLU
714
715 #if !wxUSE_UNICODE
716 // next check if the text we're inserting must be shown in a non
717 // default charset -- this only works for RichEdit > 1.0
718 if ( GetRichVersion() > 1 )
719 {
720 wxFont font = m_defaultStyle.GetFont();
721 if ( !font.Ok() )
722 font = GetFont();
723
724 if ( font.Ok() )
725 {
726 wxFontEncoding encoding = font.GetEncoding();
727 if ( encoding != wxFONTENCODING_SYSTEM )
728 {
729 done = StreamIn(valueDos, encoding, selectionOnly);
730 }
731 }
732 }
733 #endif // !wxUSE_UNICODE
734 }
735
736 if ( !done )
737 #endif // wxUSE_RICHEDIT
738 {
739 // in some cases we get 2 EN_CHANGE notifications after the SendMessage
740 // call below which is confusing for the client code and so should be
741 // avoided
742 //
743 // these cases are: (a) plain EDIT controls if EM_REPLACESEL is used
744 // and there is a non empty selection currently and (b) rich text
745 // controls in any case
746 if (
747 #if wxUSE_RICHEDIT
748 IsRich() ||
749 #endif // wxUSE_RICHEDIT
750 (selectionOnly && HasSelection()) )
751 {
752 m_suppressNextUpdate = TRUE;
753 }
754
755 ::SendMessage(GetHwnd(), selectionOnly ? EM_REPLACESEL : WM_SETTEXT,
756 0, (LPARAM)valueDos.c_str());
757
758 // OTOH, non rich text controls don't generate any events at all when
759 // we use WM_SETTEXT -- have to emulate them here
760 if ( !selectionOnly
761 #if wxUSE_RICHEDIT
762 && !IsRich()
763 #endif // wxUSE_RICHEDIT
764 )
765 {
766 // Windows already sends an update event for single-line
767 // controls.
768 if ( m_windowStyle & wxTE_MULTILINE )
769 SendUpdateEvent();
770 }
771 }
772
773 AdjustSpaceLimit();
774 }
775
776 void wxTextCtrl::AppendText(const wxString& text)
777 {
778 SetInsertionPointEnd();
779
780 WriteText(text);
781
782 #if wxUSE_RICHEDIT
783 if ( IsMultiLine() && GetRichVersion() > 1 )
784 {
785 // setting the caret to the end and showing it simply doesn't work for
786 // RichEdit 2.0 -- force it to still do what we want
787 ::SendMessage(GetHwnd(), EM_LINESCROLL, 0, GetNumberOfLines());
788 }
789 #endif // wxUSE_RICHEDIT
790 }
791
792 void wxTextCtrl::Clear()
793 {
794 ::SetWindowText(GetHwnd(), wxT(""));
795
796 #if wxUSE_RICHEDIT
797 if ( !IsRich() )
798 #endif // wxUSE_RICHEDIT
799 {
800 // rich edit controls send EN_UPDATE from WM_SETTEXT handler themselves
801 // but the normal ones don't -- make Clear() behaviour consistent by
802 // always sending this event
803
804 // Windows already sends an update event for single-line
805 // controls.
806 if ( m_windowStyle & wxTE_MULTILINE )
807 SendUpdateEvent();
808 }
809 }
810
811 #ifdef __WIN32__
812
813 bool wxTextCtrl::EmulateKeyPress(const wxKeyEvent& event)
814 {
815 SetFocus();
816
817 size_t lenOld = GetValue().length();
818
819 wxUint32 code = event.GetRawKeyCode();
820 ::keybd_event(code, 0, 0 /* key press */, 0);
821 ::keybd_event(code, 0, KEYEVENTF_KEYUP, 0);
822
823 // assume that any alphanumeric key changes the total number of characters
824 // in the control - this should work in 99% of cases
825 return GetValue().length() != lenOld;
826 }
827
828 #endif // __WIN32__
829
830 // ----------------------------------------------------------------------------
831 // Clipboard operations
832 // ----------------------------------------------------------------------------
833
834 void wxTextCtrl::Copy()
835 {
836 if (CanCopy())
837 {
838 ::SendMessage(GetHwnd(), WM_COPY, 0, 0L);
839 }
840 }
841
842 void wxTextCtrl::Cut()
843 {
844 if (CanCut())
845 {
846 ::SendMessage(GetHwnd(), WM_CUT, 0, 0L);
847 }
848 }
849
850 void wxTextCtrl::Paste()
851 {
852 if (CanPaste())
853 {
854 ::SendMessage(GetHwnd(), WM_PASTE, 0, 0L);
855 }
856 }
857
858 bool wxTextCtrl::HasSelection() const
859 {
860 long from, to;
861 GetSelection(&from, &to);
862 return from != to;
863 }
864
865 bool wxTextCtrl::CanCopy() const
866 {
867 // Can copy if there's a selection
868 return HasSelection();
869 }
870
871 bool wxTextCtrl::CanCut() const
872 {
873 return CanCopy() && IsEditable();
874 }
875
876 bool wxTextCtrl::CanPaste() const
877 {
878 if ( !IsEditable() )
879 return FALSE;
880
881 #if wxUSE_RICHEDIT
882 if ( IsRich() )
883 {
884 UINT cf = 0; // 0 == any format
885
886 return ::SendMessage(GetHwnd(), EM_CANPASTE, cf, 0) != 0;
887 }
888 #endif // wxUSE_RICHEDIT
889
890 // Standard edit control: check for straight text on clipboard
891 if ( !::OpenClipboard(GetHwndOf(wxTheApp->GetTopWindow())) )
892 return FALSE;
893
894 bool isTextAvailable = ::IsClipboardFormatAvailable(CF_TEXT) != 0;
895 ::CloseClipboard();
896
897 return isTextAvailable;
898 }
899
900 // ----------------------------------------------------------------------------
901 // Accessors
902 // ----------------------------------------------------------------------------
903
904 void wxTextCtrl::SetEditable(bool editable)
905 {
906 HWND hWnd = GetHwnd();
907 SendMessage(hWnd, EM_SETREADONLY, (WPARAM)!editable, (LPARAM)0L);
908 }
909
910 void wxTextCtrl::SetInsertionPoint(long pos)
911 {
912 DoSetSelection(pos, pos);
913 }
914
915 void wxTextCtrl::SetInsertionPointEnd()
916 {
917 long pos;
918
919 #if wxUSE_RICHEDIT
920 if ( m_verRichEdit == 1 )
921 {
922 // we don't have to waste time calling GetLastPosition() in this case
923 pos = -1;
924 }
925 else // !RichEdit 1.0
926 #endif // wxUSE_RICHEDIT
927 {
928 pos = GetLastPosition();
929 }
930
931 SetInsertionPoint(pos);
932 }
933
934 long wxTextCtrl::GetInsertionPoint() const
935 {
936 #if wxUSE_RICHEDIT
937 if ( IsRich() )
938 {
939 CHARRANGE range;
940 range.cpMin = 0;
941 range.cpMax = 0;
942 SendMessage(GetHwnd(), EM_EXGETSEL, 0, (LPARAM) &range);
943 return range.cpMin;
944 }
945 #endif // wxUSE_RICHEDIT
946
947 DWORD Pos = (DWORD)SendMessage(GetHwnd(), EM_GETSEL, 0, 0L);
948 return Pos & 0xFFFF;
949 }
950
951 long wxTextCtrl::GetLastPosition() const
952 {
953 int numLines = GetNumberOfLines();
954 long posStartLastLine = XYToPosition(0, numLines - 1);
955
956 long lenLastLine = GetLengthOfLineContainingPos(posStartLastLine);
957
958 return posStartLastLine + lenLastLine;
959 }
960
961 // If the return values from and to are the same, there is no
962 // selection.
963 void wxTextCtrl::GetSelection(long* from, long* to) const
964 {
965 #if wxUSE_RICHEDIT
966 if ( IsRich() )
967 {
968 CHARRANGE charRange;
969 ::SendMessage(GetHwnd(), EM_EXGETSEL, 0, (LPARAM) &charRange);
970
971 *from = charRange.cpMin;
972 *to = charRange.cpMax;
973 }
974 else
975 #endif // !wxUSE_RICHEDIT
976 {
977 DWORD dwStart, dwEnd;
978 ::SendMessage(GetHwnd(), EM_GETSEL, (WPARAM)&dwStart, (LPARAM)&dwEnd);
979
980 *from = dwStart;
981 *to = dwEnd;
982 }
983 }
984
985 bool wxTextCtrl::IsEditable() const
986 {
987 // strangely enough, we may be called before the control is created: our
988 // own Create() calls MSWGetStyle() which calls AcceptsFocus() which calls
989 // us
990 if ( !m_hWnd )
991 return TRUE;
992
993 long style = ::GetWindowLong(GetHwnd(), GWL_STYLE);
994
995 return (style & ES_READONLY) == 0;
996 }
997
998 // ----------------------------------------------------------------------------
999 // selection
1000 // ----------------------------------------------------------------------------
1001
1002 void wxTextCtrl::SetSelection(long from, long to)
1003 {
1004 // if from and to are both -1, it means (in wxWindows) that all text should
1005 // be selected - translate into Windows convention
1006 if ( (from == -1) && (to == -1) )
1007 {
1008 from = 0;
1009 to = -1;
1010 }
1011
1012 DoSetSelection(from, to);
1013 }
1014
1015 void wxTextCtrl::DoSetSelection(long from, long to, bool scrollCaret)
1016 {
1017 HWND hWnd = GetHwnd();
1018
1019 #ifdef __WIN32__
1020 #if wxUSE_RICHEDIT
1021 if ( IsRich() )
1022 {
1023 CHARRANGE range;
1024 range.cpMin = from;
1025 range.cpMax = to;
1026 SendMessage(hWnd, EM_EXSETSEL, 0, (LPARAM) &range);
1027 }
1028 else
1029 #endif // wxUSE_RICHEDIT
1030 {
1031 SendMessage(hWnd, EM_SETSEL, (WPARAM)from, (LPARAM)to);
1032 }
1033
1034 if ( scrollCaret )
1035 {
1036 #if wxUSE_RICHEDIT
1037 // richedit 3.0 (i.e. the version living in riched20.dll distributed
1038 // with Windows 2000 and beyond) doesn't honour EM_SCROLLCARET when
1039 // emulating richedit 2.0 unless the control has focus or ECO_NOHIDESEL
1040 // option is set (but it does work ok in richedit 1.0 mode...)
1041 //
1042 // so to make it work we either need to give focus to it here which
1043 // will probably create many problems (dummy focus events; window
1044 // containing the text control being brought to foreground
1045 // unexpectedly; ...) or to temporarily set ECO_NOHIDESEL which may
1046 // create other problems too -- and in fact it does because if we turn
1047 // on/off this style while appending the text to the control, the
1048 // vertical scrollbar never appears in it even if we append tons of
1049 // text and to work around this the only solution I found was to use
1050 // ES_DISABLENOSCROLL
1051 //
1052 // this is very ugly but I don't see any other way to make this work
1053 if ( GetRichVersion() > 1 )
1054 {
1055 if ( !HasFlag(wxTE_NOHIDESEL) )
1056 {
1057 ::SendMessage(GetHwnd(), EM_SETOPTIONS,
1058 ECOOP_OR, ECO_NOHIDESEL);
1059 }
1060 //else: everything is already ok
1061 }
1062 #endif // wxUSE_RICHEDIT
1063
1064 SendMessage(hWnd, EM_SCROLLCARET, (WPARAM)0, (LPARAM)0);
1065
1066 #if wxUSE_RICHEDIT
1067 // restore ECO_NOHIDESEL if we changed it
1068 if ( GetRichVersion() > 1 && !HasFlag(wxTE_NOHIDESEL) )
1069 {
1070 ::SendMessage(GetHwnd(), EM_SETOPTIONS,
1071 ECOOP_AND, ~ECO_NOHIDESEL);
1072 }
1073 #endif // wxUSE_RICHEDIT
1074 }
1075 #else // Win16
1076 // WPARAM is 0: selection is scrolled into view
1077 SendMessage(hWnd, EM_SETSEL, (WPARAM)0, (LPARAM)MAKELONG(from, to));
1078 #endif // Win32/16
1079 }
1080
1081 // ----------------------------------------------------------------------------
1082 // Editing
1083 // ----------------------------------------------------------------------------
1084
1085 void wxTextCtrl::Replace(long from, long to, const wxString& value)
1086 {
1087 // Set selection and remove it
1088 DoSetSelection(from, to, FALSE /* don't scroll caret into view */);
1089
1090 SendMessage(GetHwnd(), EM_REPLACESEL,
1091 #ifdef __WIN32__
1092 TRUE,
1093 #else
1094 FALSE,
1095 #endif
1096 (LPARAM)value.c_str());
1097 }
1098
1099 void wxTextCtrl::Remove(long from, long to)
1100 {
1101 Replace(from, to, _T(""));
1102 }
1103
1104 bool wxTextCtrl::LoadFile(const wxString& file)
1105 {
1106 if ( wxTextCtrlBase::LoadFile(file) )
1107 {
1108 // update the size limit if needed
1109 AdjustSpaceLimit();
1110
1111 return TRUE;
1112 }
1113
1114 return FALSE;
1115 }
1116
1117 bool wxTextCtrl::IsModified() const
1118 {
1119 return SendMessage(GetHwnd(), EM_GETMODIFY, 0, 0) != 0;
1120 }
1121
1122 // Makes 'unmodified'
1123 void wxTextCtrl::DiscardEdits()
1124 {
1125 SendMessage(GetHwnd(), EM_SETMODIFY, FALSE, 0L);
1126 }
1127
1128 int wxTextCtrl::GetNumberOfLines() const
1129 {
1130 return (int)SendMessage(GetHwnd(), EM_GETLINECOUNT, (WPARAM)0, (LPARAM)0);
1131 }
1132
1133 long wxTextCtrl::XYToPosition(long x, long y) const
1134 {
1135 // This gets the char index for the _beginning_ of this line
1136 long charIndex = SendMessage(GetHwnd(), EM_LINEINDEX, (WPARAM)y, (LPARAM)0);
1137
1138 return charIndex + x;
1139 }
1140
1141 bool wxTextCtrl::PositionToXY(long pos, long *x, long *y) const
1142 {
1143 HWND hWnd = GetHwnd();
1144
1145 // This gets the line number containing the character
1146 long lineNo;
1147 #if wxUSE_RICHEDIT
1148 if ( IsRich() )
1149 {
1150 lineNo = SendMessage(hWnd, EM_EXLINEFROMCHAR, 0, (LPARAM)pos);
1151 }
1152 else
1153 #endif // wxUSE_RICHEDIT
1154 {
1155 lineNo = SendMessage(hWnd, EM_LINEFROMCHAR, (WPARAM)pos, 0);
1156 }
1157
1158 if ( lineNo == -1 )
1159 {
1160 // no such line
1161 return FALSE;
1162 }
1163
1164 // This gets the char index for the _beginning_ of this line
1165 long charIndex = SendMessage(hWnd, EM_LINEINDEX, (WPARAM)lineNo, (LPARAM)0);
1166 if ( charIndex == -1 )
1167 {
1168 return FALSE;
1169 }
1170
1171 // The X position must therefore be the different between pos and charIndex
1172 if ( x )
1173 *x = pos - charIndex;
1174 if ( y )
1175 *y = lineNo;
1176
1177 return TRUE;
1178 }
1179
1180 void wxTextCtrl::ShowPosition(long pos)
1181 {
1182 HWND hWnd = GetHwnd();
1183
1184 // To scroll to a position, we pass the number of lines and characters
1185 // to scroll *by*. This means that we need to:
1186 // (1) Find the line position of the current line.
1187 // (2) Find the line position of pos.
1188 // (3) Scroll by (pos - current).
1189 // For now, ignore the horizontal scrolling.
1190
1191 // Is this where scrolling is relative to - the line containing the caret?
1192 // Or is the first visible line??? Try first visible line.
1193 // int currentLineLineNo1 = (int)SendMessage(hWnd, EM_LINEFROMCHAR, (WPARAM)-1, (LPARAM)0L);
1194
1195 int currentLineLineNo = (int)SendMessage(hWnd, EM_GETFIRSTVISIBLELINE, (WPARAM)0, (LPARAM)0L);
1196
1197 int specifiedLineLineNo = (int)SendMessage(hWnd, EM_LINEFROMCHAR, (WPARAM)pos, (LPARAM)0L);
1198
1199 int linesToScroll = specifiedLineLineNo - currentLineLineNo;
1200
1201 if (linesToScroll != 0)
1202 (void)SendMessage(hWnd, EM_LINESCROLL, (WPARAM)0, (LPARAM)linesToScroll);
1203 }
1204
1205 long wxTextCtrl::GetLengthOfLineContainingPos(long pos) const
1206 {
1207 return ::SendMessage(GetHwnd(), EM_LINELENGTH, (WPARAM)pos, 0);
1208 }
1209
1210 int wxTextCtrl::GetLineLength(long lineNo) const
1211 {
1212 long pos = XYToPosition(0, lineNo);
1213
1214 return GetLengthOfLineContainingPos(pos);
1215 }
1216
1217 wxString wxTextCtrl::GetLineText(long lineNo) const
1218 {
1219 size_t len = (size_t)GetLineLength(lineNo) + 1;
1220
1221 // there must be at least enough place for the length WORD in the
1222 // buffer
1223 len += sizeof(WORD);
1224
1225 wxString str;
1226 wxChar *buf = str.GetWriteBuf(len);
1227
1228 *(WORD *)buf = (WORD)len;
1229 len = (size_t)::SendMessage(GetHwnd(), EM_GETLINE, lineNo, (LPARAM)buf);
1230 buf[len] = 0;
1231
1232 str.UngetWriteBuf(len);
1233
1234 return str;
1235 }
1236
1237 void wxTextCtrl::SetMaxLength(unsigned long len)
1238 {
1239 ::SendMessage(GetHwnd(), EM_LIMITTEXT, len, 0);
1240 }
1241
1242 // ----------------------------------------------------------------------------
1243 // Undo/redo
1244 // ----------------------------------------------------------------------------
1245
1246 void wxTextCtrl::Undo()
1247 {
1248 if (CanUndo())
1249 {
1250 ::SendMessage(GetHwnd(), EM_UNDO, 0, 0);
1251 }
1252 }
1253
1254 void wxTextCtrl::Redo()
1255 {
1256 if (CanRedo())
1257 {
1258 // Same as Undo, since Undo undoes the undo, i.e. a redo.
1259 ::SendMessage(GetHwnd(), EM_UNDO, 0, 0);
1260 }
1261 }
1262
1263 bool wxTextCtrl::CanUndo() const
1264 {
1265 return ::SendMessage(GetHwnd(), EM_CANUNDO, 0, 0) != 0;
1266 }
1267
1268 bool wxTextCtrl::CanRedo() const
1269 {
1270 return ::SendMessage(GetHwnd(), EM_CANUNDO, 0, 0) != 0;
1271 }
1272
1273 // ----------------------------------------------------------------------------
1274 // implemenation details
1275 // ----------------------------------------------------------------------------
1276
1277 void wxTextCtrl::Command(wxCommandEvent & event)
1278 {
1279 SetValue(event.GetString());
1280 ProcessCommand (event);
1281 }
1282
1283 void wxTextCtrl::OnDropFiles(wxDropFilesEvent& event)
1284 {
1285 // By default, load the first file into the text window.
1286 if (event.GetNumberOfFiles() > 0)
1287 {
1288 LoadFile(event.GetFiles()[0]);
1289 }
1290 }
1291
1292 // ----------------------------------------------------------------------------
1293 // kbd input processing
1294 // ----------------------------------------------------------------------------
1295
1296 bool wxTextCtrl::MSWShouldPreProcessMessage(WXMSG* pMsg)
1297 {
1298 MSG *msg = (MSG *)pMsg;
1299
1300 // check for our special keys here: if we don't do it and the parent frame
1301 // uses them as accelerators, they wouldn't work at all, so we disable
1302 // usual preprocessing for them
1303 if ( msg->message == WM_KEYDOWN )
1304 {
1305 WORD vkey = (WORD) msg->wParam;
1306 if ( (HIWORD(msg->lParam) & KF_ALTDOWN) == KF_ALTDOWN )
1307 {
1308 if ( vkey == VK_BACK )
1309 return FALSE;
1310 }
1311 else // no Alt
1312 {
1313 // we want to process some Ctrl-foo and Shift-bar but no key
1314 // combinations without either Ctrl or Shift nor with both of them
1315 // pressed
1316 const int ctrl = wxIsCtrlDown(),
1317 shift = wxIsShiftDown();
1318 switch ( ctrl + shift )
1319 {
1320 default:
1321 wxFAIL_MSG( _T("how many modifiers have we got?") );
1322 // fall through
1323
1324 case 0:
1325 case 2:
1326 break;
1327
1328 case 1:
1329 // either Ctrl or Shift pressed
1330 if ( ctrl )
1331 {
1332 switch ( vkey )
1333 {
1334 case 'C':
1335 case 'V':
1336 case 'X':
1337 case VK_INSERT:
1338 case VK_DELETE:
1339 case VK_HOME:
1340 case VK_END:
1341 return FALSE;
1342 }
1343 }
1344 else // Shift is pressed
1345 {
1346 if ( vkey == VK_INSERT || vkey == VK_DELETE )
1347 return FALSE;
1348 }
1349 }
1350 }
1351 }
1352
1353 return wxControl::MSWShouldPreProcessMessage(pMsg);
1354 }
1355
1356 void wxTextCtrl::OnChar(wxKeyEvent& event)
1357 {
1358 switch ( event.GetKeyCode() )
1359 {
1360 case WXK_RETURN:
1361 if ( !(m_windowStyle & wxTE_MULTILINE) )
1362 {
1363 wxCommandEvent event(wxEVT_COMMAND_TEXT_ENTER, m_windowId);
1364 InitCommandEvent(event);
1365 event.SetString(GetValue());
1366 if ( GetEventHandler()->ProcessEvent(event) )
1367 return;
1368 }
1369 //else: multiline controls need Enter for themselves
1370
1371 break;
1372
1373 case WXK_TAB:
1374 // always produce navigation event - even if we process TAB
1375 // ourselves the fact that we got here means that the user code
1376 // decided to skip processing of this TAB - probably to let it
1377 // do its default job.
1378 {
1379 wxNavigationKeyEvent eventNav;
1380 eventNav.SetDirection(!event.ShiftDown());
1381 eventNav.SetWindowChange(event.ControlDown());
1382 eventNav.SetEventObject(this);
1383
1384 if ( GetParent()->GetEventHandler()->ProcessEvent(eventNav) )
1385 return;
1386 }
1387 break;
1388 }
1389
1390 // no, we didn't process it
1391 event.Skip();
1392 }
1393
1394 long wxTextCtrl::MSWWindowProc(WXUINT nMsg, WXWPARAM wParam, WXLPARAM lParam)
1395 {
1396 long lRc = wxTextCtrlBase::MSWWindowProc(nMsg, wParam, lParam);
1397
1398 if ( nMsg == WM_GETDLGCODE )
1399 {
1400 // we always want the chars and the arrows: the arrows for navigation
1401 // and the chars because we want Ctrl-C to work even in a read only
1402 // control
1403 long lDlgCode = DLGC_WANTCHARS | DLGC_WANTARROWS;
1404
1405 if ( IsEditable() )
1406 {
1407 // we may have several different cases:
1408 // 1. normal case: both TAB and ENTER are used for dlg navigation
1409 // 2. ctrl which wants TAB for itself: ENTER is used to pass to the
1410 // next control in the dialog
1411 // 3. ctrl which wants ENTER for itself: TAB is used for dialog
1412 // navigation
1413 // 4. ctrl which wants both TAB and ENTER: Ctrl-ENTER is used to go
1414 // to the next control
1415
1416 // the multiline edit control should always get <Return> for itself
1417 if ( HasFlag(wxTE_PROCESS_ENTER) || HasFlag(wxTE_MULTILINE) )
1418 lDlgCode |= DLGC_WANTMESSAGE;
1419
1420 if ( HasFlag(wxTE_PROCESS_TAB) )
1421 lDlgCode |= DLGC_WANTTAB;
1422
1423 lRc |= lDlgCode;
1424 }
1425 else // !editable
1426 {
1427 // NB: use "=", not "|=" as the base class version returns the
1428 // same flags is this state as usual (i.e. including
1429 // DLGC_WANTMESSAGE). This is strange (how does it work in the
1430 // native Win32 apps?) but for now live with it.
1431 lRc = lDlgCode;
1432 }
1433 }
1434
1435 return lRc;
1436 }
1437
1438 // ----------------------------------------------------------------------------
1439 // text control event processing
1440 // ----------------------------------------------------------------------------
1441
1442 bool wxTextCtrl::SendUpdateEvent()
1443 {
1444 // is event reporting suspended?
1445 if ( m_suppressNextUpdate )
1446 {
1447 // do process the next one
1448 m_suppressNextUpdate = FALSE;
1449
1450 return FALSE;
1451 }
1452
1453 wxCommandEvent event(wxEVT_COMMAND_TEXT_UPDATED, GetId());
1454 InitCommandEvent(event);
1455 event.SetString(GetValue());
1456
1457 return ProcessCommand(event);
1458 }
1459
1460 bool wxTextCtrl::MSWCommand(WXUINT param, WXWORD WXUNUSED(id))
1461 {
1462 switch ( param )
1463 {
1464 case EN_SETFOCUS:
1465 case EN_KILLFOCUS:
1466 {
1467 wxFocusEvent event(param == EN_KILLFOCUS ? wxEVT_KILL_FOCUS
1468 : wxEVT_SET_FOCUS,
1469 m_windowId);
1470 event.SetEventObject(this);
1471 GetEventHandler()->ProcessEvent(event);
1472 }
1473 break;
1474
1475 case EN_CHANGE:
1476 SendUpdateEvent();
1477 break;
1478
1479 case EN_MAXTEXT:
1480 // the text size limit has been hit -- try to increase it
1481 if ( !AdjustSpaceLimit() )
1482 {
1483 wxCommandEvent event(wxEVT_COMMAND_TEXT_MAXLEN, m_windowId);
1484 InitCommandEvent(event);
1485 event.SetString(GetValue());
1486 ProcessCommand(event);
1487 }
1488 break;
1489
1490 // the other edit notification messages are not processed
1491 default:
1492 return FALSE;
1493 }
1494
1495 // processed
1496 return TRUE;
1497 }
1498
1499 WXHBRUSH wxTextCtrl::OnCtlColor(WXHDC pDC, WXHWND WXUNUSED(pWnd), WXUINT WXUNUSED(nCtlColor),
1500 #if wxUSE_CTL3D
1501 WXUINT message,
1502 WXWPARAM wParam,
1503 WXLPARAM lParam
1504 #else
1505 WXUINT WXUNUSED(message),
1506 WXWPARAM WXUNUSED(wParam),
1507 WXLPARAM WXUNUSED(lParam)
1508 #endif
1509 )
1510 {
1511 #if wxUSE_CTL3D
1512 if ( m_useCtl3D )
1513 {
1514 HBRUSH hbrush = Ctl3dCtlColorEx(message, wParam, lParam);
1515 return (WXHBRUSH) hbrush;
1516 }
1517 #endif // wxUSE_CTL3D
1518
1519 HDC hdc = (HDC)pDC;
1520 if (GetParent()->GetTransparentBackground())
1521 SetBkMode(hdc, TRANSPARENT);
1522 else
1523 SetBkMode(hdc, OPAQUE);
1524
1525 wxColour colBack = GetBackgroundColour();
1526
1527 if (!IsEnabled() && (GetWindowStyle() & wxTE_MULTILINE) == 0)
1528 colBack = wxSystemSettings::GetColour(wxSYS_COLOUR_3DFACE);
1529
1530 ::SetBkColor(hdc, wxColourToRGB(colBack));
1531 ::SetTextColor(hdc, wxColourToRGB(GetForegroundColour()));
1532
1533 wxBrush *brush = wxTheBrushList->FindOrCreateBrush(colBack, wxSOLID);
1534
1535 return (WXHBRUSH)brush->GetResourceHandle();
1536 }
1537
1538 // In WIN16, need to override normal erasing because
1539 // Ctl3D doesn't use the wxWindows background colour.
1540 #ifdef __WIN16__
1541 void wxTextCtrl::OnEraseBackground(wxEraseEvent& event)
1542 {
1543 wxColour col(m_backgroundColour);
1544
1545 #if wxUSE_CTL3D
1546 if (m_useCtl3D)
1547 col = wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOW);
1548 #endif
1549
1550 RECT rect;
1551 ::GetClientRect(GetHwnd(), &rect);
1552
1553 COLORREF ref = wxColourToRGB(col);
1554 HBRUSH hBrush = ::CreateSolidBrush(ref);
1555 if ( !hBrush )
1556 wxLogLastError(wxT("CreateSolidBrush"));
1557
1558 HDC hdc = (HDC)event.GetDC()->GetHDC();
1559
1560 int mode = ::SetMapMode(hdc, MM_TEXT);
1561
1562 ::FillRect(hdc, &rect, hBrush);
1563 ::DeleteObject(hBrush);
1564 ::SetMapMode(hdc, mode);
1565
1566 }
1567 #endif // Win16
1568
1569 bool wxTextCtrl::AdjustSpaceLimit()
1570 {
1571 #ifndef __WIN16__
1572 unsigned int limit = ::SendMessage(GetHwnd(), EM_GETLIMITTEXT, 0, 0);
1573
1574 // HACK: we try to automatically extend the limit for the amount of text
1575 // to allow (interactively) entering more than 64Kb of text under
1576 // Win9x but we shouldn't reset the text limit which was previously
1577 // set explicitly with SetMaxLength()
1578 //
1579 // we could solve this by storing the limit we set in wxTextCtrl but
1580 // to save space we prefer to simply test here the actual limit
1581 // value: we consider that SetMaxLength() can only be called for
1582 // values < 32Kb
1583 if ( limit < 0x8000 )
1584 {
1585 // we've got more text than limit set by SetMaxLength()
1586 return FALSE;
1587 }
1588
1589 unsigned int len = ::GetWindowTextLength(GetHwnd());
1590 if ( len >= limit )
1591 {
1592 limit = len + 0x8000; // 32Kb
1593
1594 #if wxUSE_RICHEDIT
1595 if ( IsRich() )
1596 {
1597 // as a nice side effect, this also allows passing limit > 64Kb
1598 ::SendMessage(GetHwnd(), EM_EXLIMITTEXT, 0, limit);
1599 }
1600 else
1601 #endif // wxUSE_RICHEDIT
1602 {
1603 if ( limit > 0xffff )
1604 {
1605 // this will set it to a platform-dependent maximum (much more
1606 // than 64Kb under NT)
1607 limit = 0;
1608 }
1609
1610 ::SendMessage(GetHwnd(), EM_LIMITTEXT, limit, 0);
1611 }
1612 }
1613 #endif // !Win16
1614
1615 // we changed the limit
1616 return TRUE;
1617 }
1618
1619 bool wxTextCtrl::AcceptsFocus() const
1620 {
1621 // we don't want focus if we can't be edited unless we're a multiline
1622 // control because then it might be still nice to get focus from keyboard
1623 // to be able to scroll it without mouse
1624 return (IsEditable() || IsMultiLine()) && wxControl::AcceptsFocus();
1625 }
1626
1627 wxSize wxTextCtrl::DoGetBestSize() const
1628 {
1629 int cx, cy;
1630 wxGetCharSize(GetHWND(), &cx, &cy, &GetFont());
1631
1632 int wText = DEFAULT_ITEM_WIDTH;
1633
1634 int hText = EDIT_HEIGHT_FROM_CHAR_HEIGHT(cy);
1635 if ( m_windowStyle & wxTE_MULTILINE )
1636 {
1637 hText *= wxMax(GetNumberOfLines(), 5);
1638 }
1639 //else: for single line control everything is ok
1640
1641 return wxSize(wText, hText);
1642 }
1643
1644 // ----------------------------------------------------------------------------
1645 // standard handlers for standard edit menu events
1646 // ----------------------------------------------------------------------------
1647
1648 void wxTextCtrl::OnCut(wxCommandEvent& WXUNUSED(event))
1649 {
1650 Cut();
1651 }
1652
1653 void wxTextCtrl::OnCopy(wxCommandEvent& WXUNUSED(event))
1654 {
1655 Copy();
1656 }
1657
1658 void wxTextCtrl::OnPaste(wxCommandEvent& WXUNUSED(event))
1659 {
1660 Paste();
1661 }
1662
1663 void wxTextCtrl::OnUndo(wxCommandEvent& WXUNUSED(event))
1664 {
1665 Undo();
1666 }
1667
1668 void wxTextCtrl::OnRedo(wxCommandEvent& WXUNUSED(event))
1669 {
1670 Redo();
1671 }
1672
1673 void wxTextCtrl::OnDelete(wxCommandEvent& event)
1674 {
1675 long from, to;
1676 GetSelection(& from, & to);
1677 if (from != -1 && to != -1)
1678 Remove(from, to);
1679 }
1680
1681 void wxTextCtrl::OnSelectAll(wxCommandEvent& event)
1682 {
1683 SetSelection(-1, -1);
1684 }
1685
1686 void wxTextCtrl::OnUpdateCut(wxUpdateUIEvent& event)
1687 {
1688 event.Enable( CanCut() );
1689 }
1690
1691 void wxTextCtrl::OnUpdateCopy(wxUpdateUIEvent& event)
1692 {
1693 event.Enable( CanCopy() );
1694 }
1695
1696 void wxTextCtrl::OnUpdatePaste(wxUpdateUIEvent& event)
1697 {
1698 event.Enable( CanPaste() );
1699 }
1700
1701 void wxTextCtrl::OnUpdateUndo(wxUpdateUIEvent& event)
1702 {
1703 event.Enable( CanUndo() );
1704 }
1705
1706 void wxTextCtrl::OnUpdateRedo(wxUpdateUIEvent& event)
1707 {
1708 event.Enable( CanRedo() );
1709 }
1710
1711 void wxTextCtrl::OnUpdateDelete(wxUpdateUIEvent& event)
1712 {
1713 long from, to;
1714 GetSelection(& from, & to);
1715 event.Enable(from != -1 && to != -1 && from != to && IsEditable()) ;
1716 }
1717
1718 void wxTextCtrl::OnUpdateSelectAll(wxUpdateUIEvent& event)
1719 {
1720 event.Enable(GetLastPosition() > 0);
1721 }
1722
1723 void wxTextCtrl::OnRightClick(wxMouseEvent& event)
1724 {
1725 #if wxUSE_RICHEDIT
1726 if (IsRich())
1727 {
1728 if (!m_privateContextMenu)
1729 {
1730 m_privateContextMenu = new wxMenu;
1731 m_privateContextMenu->Append(wxID_UNDO, _("&Undo"));
1732 m_privateContextMenu->Append(wxID_REDO, _("&Redo"));
1733 m_privateContextMenu->AppendSeparator();
1734 m_privateContextMenu->Append(wxID_CUT, _("Cu&t"));
1735 m_privateContextMenu->Append(wxID_COPY, _("&Copy"));
1736 m_privateContextMenu->Append(wxID_PASTE, _("&Paste"));
1737 m_privateContextMenu->Append(wxID_CLEAR, _("&Delete"));
1738 m_privateContextMenu->AppendSeparator();
1739 m_privateContextMenu->Append(wxID_SELECTALL, _("Select &All"));
1740 }
1741 PopupMenu(m_privateContextMenu, event.GetPosition());
1742 return;
1743 }
1744 else
1745 #endif
1746 event.Skip();
1747 }
1748
1749 // the rest of the file only deals with the rich edit controls
1750 #if wxUSE_RICHEDIT
1751
1752 // ----------------------------------------------------------------------------
1753 // EN_LINK processing
1754 // ----------------------------------------------------------------------------
1755
1756 bool wxTextCtrl::MSWOnNotify(int idCtrl, WXLPARAM lParam, WXLPARAM *result)
1757 {
1758 NMHDR *hdr = (NMHDR* )lParam;
1759 switch ( hdr->code )
1760 {
1761 case EN_MSGFILTER:
1762 {
1763 const MSGFILTER *msgf = (MSGFILTER *)lParam;
1764 UINT msg = msgf->msg;
1765
1766 // this is a bit crazy but richedit 1.0 sends us all mouse
1767 // events _except_ WM_LBUTTONUP (don't ask me why) so we have
1768 // generate the wxWin events for this message manually
1769 //
1770 // NB: in fact, this is still not totally correct as it does
1771 // send us WM_LBUTTONUP if the selection was cleared by the
1772 // last click -- so currently we get 2 events in this case,
1773 // but as I don't see any obvious way to check for this I
1774 // leave this code in place because it's still better than
1775 // not getting left up events at all
1776 if ( msg == WM_LBUTTONUP )
1777 {
1778 WXUINT flags = msgf->wParam;
1779 int x = GET_X_LPARAM(msgf->lParam),
1780 y = GET_Y_LPARAM(msgf->lParam);
1781
1782 HandleMouseEvent(msg, x, y, flags);
1783 }
1784 }
1785
1786 // return TRUE to process the event (and FALSE to ignore it)
1787 return TRUE;
1788
1789 case EN_LINK:
1790 {
1791 const ENLINK *enlink = (ENLINK *)hdr;
1792
1793 switch ( enlink->msg )
1794 {
1795 case WM_SETCURSOR:
1796 // ok, so it is hardcoded - do we really nee to
1797 // customize it?
1798 ::SetCursor(GetHcursorOf(wxCursor(wxCURSOR_HAND)));
1799 *result = TRUE;
1800 break;
1801
1802 case WM_MOUSEMOVE:
1803 case WM_LBUTTONDOWN:
1804 case WM_LBUTTONUP:
1805 case WM_LBUTTONDBLCLK:
1806 case WM_RBUTTONDOWN:
1807 case WM_RBUTTONUP:
1808 case WM_RBUTTONDBLCLK:
1809 // send a mouse event
1810 {
1811 static const wxEventType eventsMouse[] =
1812 {
1813 wxEVT_MOTION,
1814 wxEVT_LEFT_DOWN,
1815 wxEVT_LEFT_UP,
1816 wxEVT_LEFT_DCLICK,
1817 wxEVT_RIGHT_DOWN,
1818 wxEVT_RIGHT_UP,
1819 wxEVT_RIGHT_DCLICK,
1820 };
1821
1822 // the event ids are consecutive
1823 wxMouseEvent
1824 evtMouse(eventsMouse[enlink->msg - WM_MOUSEMOVE]);
1825
1826 InitMouseEvent(evtMouse,
1827 GET_X_LPARAM(enlink->lParam),
1828 GET_Y_LPARAM(enlink->lParam),
1829 enlink->wParam);
1830
1831 wxTextUrlEvent event(m_windowId, evtMouse,
1832 enlink->chrg.cpMin,
1833 enlink->chrg.cpMax);
1834
1835 InitCommandEvent(event);
1836
1837 *result = ProcessCommand(event);
1838 }
1839 break;
1840 }
1841 }
1842 return TRUE;
1843 }
1844
1845 // not processed, leave it to the base class
1846 return wxTextCtrlBase::MSWOnNotify(idCtrl, lParam, result);
1847 }
1848
1849 // ----------------------------------------------------------------------------
1850 // colour setting for the rich edit controls
1851 // ----------------------------------------------------------------------------
1852
1853 bool wxTextCtrl::SetBackgroundColour(const wxColour& colour)
1854 {
1855 if ( !wxTextCtrlBase::SetBackgroundColour(colour) )
1856 {
1857 // colour didn't really change
1858 return FALSE;
1859 }
1860
1861 if ( IsRich() )
1862 {
1863 // rich edit doesn't use WM_CTLCOLOR, hence we need to send
1864 // EM_SETBKGNDCOLOR additionally
1865 ::SendMessage(GetHwnd(), EM_SETBKGNDCOLOR, 0, wxColourToRGB(colour));
1866 }
1867
1868 return TRUE;
1869 }
1870
1871 bool wxTextCtrl::SetForegroundColour(const wxColour& colour)
1872 {
1873 if ( !wxTextCtrlBase::SetForegroundColour(colour) )
1874 {
1875 // colour didn't really change
1876 return FALSE;
1877 }
1878
1879 if ( IsRich() )
1880 {
1881 // change the colour of everything
1882 CHARFORMAT cf;
1883 wxZeroMemory(cf);
1884 cf.cbSize = sizeof(cf);
1885 cf.dwMask = CFM_COLOR;
1886 cf.crTextColor = wxColourToRGB(colour);
1887 ::SendMessage(GetHwnd(), EM_SETCHARFORMAT, SCF_ALL, (LPARAM)&cf);
1888 }
1889
1890 return TRUE;
1891 }
1892
1893 // ----------------------------------------------------------------------------
1894 // styling support for rich edit controls
1895 // ----------------------------------------------------------------------------
1896
1897 #if wxUSE_RICHEDIT
1898
1899 bool wxTextCtrl::SetStyle(long start, long end, const wxTextAttr& style)
1900 {
1901 if ( !IsRich() )
1902 {
1903 // can't do it with normal text control
1904 return FALSE;
1905 }
1906
1907 // the richedit 1.0 doesn't handle setting background colour, so don't
1908 // even try to do anything if it's the only thing we want to change
1909 if ( m_verRichEdit == 1 && !style.HasFont() && !style.HasTextColour() )
1910 {
1911 // nothing to do: return TRUE if there was really nothing to do and
1912 // FALSE if we failed to set bg colour
1913 return !style.HasBackgroundColour();
1914 }
1915
1916 // order the range if needed
1917 if ( start > end )
1918 {
1919 long tmp = start;
1920 start = end;
1921 end = tmp;
1922 }
1923
1924 // we can only change the format of the selection, so select the range we
1925 // want and restore the old selection later
1926 long startOld, endOld;
1927 GetSelection(&startOld, &endOld);
1928
1929 // but do we really have to change the selection?
1930 bool changeSel = start != startOld || end != endOld;
1931
1932 if ( changeSel )
1933 {
1934 DoSetSelection(start, end, FALSE /* don't scroll caret into view */);
1935 }
1936
1937 // initialize CHARFORMAT struct
1938 #if wxUSE_RICHEDIT2
1939 CHARFORMAT2 cf;
1940 #else
1941 CHARFORMAT cf;
1942 #endif
1943
1944 wxZeroMemory(cf);
1945
1946 // we can't use CHARFORMAT2 with RichEdit 1.0, so pretend it is a simple
1947 // CHARFORMAT in that case
1948 #if wxUSE_RICHEDIT2
1949 if ( m_verRichEdit == 1 )
1950 {
1951 // this is the only thing the control is going to grok
1952 cf.cbSize = sizeof(CHARFORMAT);
1953 }
1954 else
1955 #endif
1956 {
1957 // CHARFORMAT or CHARFORMAT2
1958 cf.cbSize = sizeof(cf);
1959 }
1960
1961 if ( style.HasFont() )
1962 {
1963 // VZ: CFM_CHARSET doesn't seem to do anything at all in RichEdit 2.0
1964 // but using it doesn't seem to hurt neither so leaving it for now
1965
1966 cf.dwMask |= CFM_FACE | CFM_SIZE | CFM_CHARSET |
1967 CFM_ITALIC | CFM_BOLD | CFM_UNDERLINE;
1968
1969 // fill in data from LOGFONT but recalculate lfHeight because we need
1970 // the real height in twips and not the negative number which
1971 // wxFillLogFont() returns (this is correct in general and works with
1972 // the Windows font mapper, but not here)
1973 LOGFONT lf;
1974 wxFillLogFont(&lf, &style.GetFont());
1975 cf.yHeight = 20*style.GetFont().GetPointSize(); // 1 pt = 20 twips
1976 cf.bCharSet = lf.lfCharSet;
1977 cf.bPitchAndFamily = lf.lfPitchAndFamily;
1978 wxStrncpy( cf.szFaceName, lf.lfFaceName, WXSIZEOF(cf.szFaceName) );
1979
1980 // also deal with underline/italic/bold attributes: note that we must
1981 // always set CFM_ITALIC &c bits in dwMask, even if we don't set the
1982 // style to allow clearing it
1983 if ( lf.lfItalic )
1984 {
1985 cf.dwEffects |= CFE_ITALIC;
1986 }
1987
1988 if ( lf.lfWeight == FW_BOLD )
1989 {
1990 cf.dwEffects |= CFE_BOLD;
1991 }
1992
1993 if ( lf.lfUnderline )
1994 {
1995 cf.dwEffects |= CFE_UNDERLINE;
1996 }
1997
1998 // strikeout fonts are not supported by wxWindows
1999 }
2000
2001 if ( style.HasTextColour() )
2002 {
2003 cf.dwMask |= CFM_COLOR;
2004 cf.crTextColor = wxColourToRGB(style.GetTextColour());
2005 }
2006
2007 #if wxUSE_RICHEDIT2
2008 if ( m_verRichEdit != 1 && style.HasBackgroundColour() )
2009 {
2010 cf.dwMask |= CFM_BACKCOLOR;
2011 cf.crBackColor = wxColourToRGB(style.GetBackgroundColour());
2012 }
2013 #endif // wxUSE_RICHEDIT2
2014
2015 // do format the selection
2016 bool ok = ::SendMessage(GetHwnd(), EM_SETCHARFORMAT,
2017 SCF_SELECTION, (LPARAM)&cf) != 0;
2018 if ( !ok )
2019 {
2020 wxLogDebug(_T("SendMessage(EM_SETCHARFORMAT, SCF_SELECTION) failed"));
2021 }
2022
2023 if ( changeSel )
2024 {
2025 // restore the original selection
2026 DoSetSelection(startOld, endOld, FALSE);
2027 }
2028
2029 return ok;
2030 }
2031
2032 bool wxTextCtrl::SetDefaultStyle(const wxTextAttr& style)
2033 {
2034 if ( !wxTextCtrlBase::SetDefaultStyle(style) )
2035 return FALSE;
2036
2037 // we have to do this or the style wouldn't apply for the text typed by the
2038 // user
2039 long posLast = GetLastPosition();
2040 SetStyle(posLast, posLast, m_defaultStyle);
2041
2042 return TRUE;
2043 }
2044
2045 #endif
2046
2047 // ----------------------------------------------------------------------------
2048 // wxRichEditModule
2049 // ----------------------------------------------------------------------------
2050
2051 bool wxRichEditModule::OnInit()
2052 {
2053 // don't do anything - we will load it when needed
2054 return TRUE;
2055 }
2056
2057 void wxRichEditModule::OnExit()
2058 {
2059 for ( size_t i = 0; i < WXSIZEOF(ms_hRichEdit); i++ )
2060 {
2061 if ( ms_hRichEdit[i] )
2062 {
2063 ::FreeLibrary(ms_hRichEdit[i]);
2064 }
2065 }
2066 }
2067
2068 /* static */
2069 bool wxRichEditModule::Load(int version)
2070 {
2071 // we don't support loading richedit 3.0 as I don't know how to distinguish
2072 // it from 2.0 anyhow
2073 wxCHECK_MSG( version == 1 || version == 2, FALSE,
2074 _T("incorrect richedit control version requested") );
2075
2076 // make it the index in the array
2077 version--;
2078
2079 if ( ms_hRichEdit[version] == (HINSTANCE)-1 )
2080 {
2081 // we had already tried to load it and failed
2082 return FALSE;
2083 }
2084
2085 if ( ms_hRichEdit[version] )
2086 {
2087 // we've already got this one
2088 return TRUE;
2089 }
2090
2091 wxString dllname = version ? _T("riched20") : _T("riched32");
2092 dllname += _T(".dll");
2093
2094 ms_hRichEdit[version] = ::LoadLibrary(dllname);
2095
2096 if ( !ms_hRichEdit[version] )
2097 {
2098 wxLogSysError(_("Could not load Rich Edit DLL '%s'"), dllname.c_str());
2099
2100 ms_hRichEdit[version] = (HINSTANCE)-1;
2101
2102 return FALSE;
2103 }
2104
2105 return TRUE;
2106 }
2107
2108 #endif // wxUSE_RICHEDIT
2109
2110 #endif // wxUSE_TEXTCTRL
wxWidgets (Impactor)