src/os2/textctrl.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        textctrl.cpp
   3 // Purpose:     wxTextCtrl
   4 // Author:      AUTHOR
   5 // Modified by:
   6 // Created:     ??/??/98
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) AUTHOR
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 #ifdef __GNUG__
  13 #pragma implementation "textctrl.h"
  14 #endif
  15
  16 #include <sys/types.h>
  17 #include <sys/stat.h>
  18 #include <fstream.h>
  19
  20 #include "wx/textctrl.h"
  21 #include "wx/settings.h"
  22 #include "wx/filefn.h"
  23 #include "wx/utils.h"
  24
  25 #if defined(__BORLANDC__) && !defined(__WIN32__)
  26 #include <alloc.h>
  27 #else
  28 #ifndef __GNUWIN32__
  29 #include <malloc.h>
  30 #endif
  31 #endif
  32
  33 #if !USE_SHARED_LIBRARY
  34 IMPLEMENT_DYNAMIC_CLASS(wxTextCtrl, wxControl)
  35
  36 BEGIN_EVENT_TABLE(wxTextCtrl, wxControl)
  37         EVT_DROP_FILES(wxTextCtrl::OnDropFiles)
  38     EVT_MENU(wxID_CUT, wxTextCtrl::OnCut)
  39     EVT_MENU(wxID_COPY, wxTextCtrl::OnCopy)
  40     EVT_MENU(wxID_PASTE, wxTextCtrl::OnPaste)
  41     EVT_MENU(wxID_UNDO, wxTextCtrl::OnUndo)
  42     EVT_MENU(wxID_REDO, wxTextCtrl::OnRedo)
  43
  44     EVT_UPDATE_UI(wxID_CUT, wxTextCtrl::OnUpdateCut)
  45     EVT_UPDATE_UI(wxID_COPY, wxTextCtrl::OnUpdateCopy)
  46     EVT_UPDATE_UI(wxID_PASTE, wxTextCtrl::OnUpdatePaste)
  47     EVT_UPDATE_UI(wxID_UNDO, wxTextCtrl::OnUpdateUndo)
  48     EVT_UPDATE_UI(wxID_REDO, wxTextCtrl::OnUpdateRedo)
  49 END_EVENT_TABLE()
  50 #endif
  51
  52 // Text item
  53 wxTextCtrl::wxTextCtrl()
  54 #ifndef NO_TEXT_WINDOW_STREAM
  55  :streambuf()
  56 #endif
  57 {
  58     m_fileName = "";
  59 }
  60
  61 bool wxTextCtrl::Create(wxWindow *parent, wxWindowID id,
  62                    const wxString& value,
  63            const wxPoint& pos,
  64            const wxSize& size, long style,
  65            const wxValidator& validator,
  66            const wxString& name)
  67 {
  68     m_fileName = "";
  69     SetName(name);
  70     SetValidator(validator);
  71     if (parent) parent->AddChild(this);
  72
  73     m_windowStyle = style;
  74
  75     if ( id == -1 )
  76             m_windowId = (int)NewControlId();
  77     else
  78             m_windowId = id;
  79
  80     return TRUE;
  81 }
  82
  83 wxString wxTextCtrl::GetValue() const
  84 {
  85     // TODO
  86     return wxString("");
  87 }
  88
  89 void wxTextCtrl::SetValue(const wxString& value)
  90 {
  91     // TODO
  92 }
  93
  94 void wxTextCtrl::SetSize(int x, int y, int width, int height, int sizeFlags)
  95 {
  96     // TODO
  97 }
  98
  99 // Clipboard operations
 100 void wxTextCtrl::Copy()
 101 {
 102     // TODO
 103 }
 104
 105 void wxTextCtrl::Cut()
 106 {
 107     // TODO
 108 }
 109
 110 void wxTextCtrl::Paste()
 111 {
 112     // TODO
 113 }
 114
 115 void wxTextCtrl::SetEditable(bool editable)
 116 {
 117     // TODO
 118 }
 119
 120 void wxTextCtrl::SetInsertionPoint(long pos)
 121 {
 122     // TODO
 123 }
 124
 125 void wxTextCtrl::SetInsertionPointEnd()
 126 {
 127     long pos = GetLastPosition();
 128     SetInsertionPoint(pos);
 129 }
 130
 131 long wxTextCtrl::GetInsertionPoint() const
 132 {
 133     // TODO
 134     return 0;
 135 }
 136
 137 long wxTextCtrl::GetLastPosition() const
 138 {
 139     // TODO
 140     return 0;
 141 }
 142
 143 void wxTextCtrl::Replace(long from, long to, const wxString& value)
 144 {
 145     // TODO
 146 }
 147
 148 void wxTextCtrl::Remove(long from, long to)
 149 {
 150     // TODO
 151 }
 152
 153 void wxTextCtrl::SetSelection(long from, long to)
 154 {
 155     // TODO
 156 }
 157
 158 bool wxTextCtrl::LoadFile(const wxString& file)
 159 {
 160     if (!wxFileExists(file))
 161         return FALSE;
 162
 163     m_fileName = file;
 164
 165     Clear();
 166
 167     ifstream input((char*) (const char*) file, ios::nocreate | ios::in);
 168
 169     if (!input.bad())
 170     {
 171         struct stat stat_buf;
 172         if (stat(file, &stat_buf) < 0)
 173             return FALSE;
 174         // This may need to be a bigger buffer than the file size suggests,
 175         // if it's a UNIX file. Give it an extra 1000 just in case.
 176         char *tmp_buffer = (char*)malloc((size_t)(stat_buf.st_size+1+1000));
 177         long no_lines = 0;
 178         long pos = 0;
 179         while (!input.eof() && input.peek() != EOF)
 180         {
 181             input.getline(wxBuffer, 500);
 182                 int len = strlen(wxBuffer);
 183                 wxBuffer[len] = 13;
 184                 wxBuffer[len+1] = 10;
 185                 wxBuffer[len+2] = 0;
 186                 strcpy(tmp_buffer+pos, wxBuffer);
 187                 pos += strlen(wxBuffer);
 188                 no_lines++;
 189          }
 190
 191          // TODO add line
 192
 193          free(tmp_buffer);
 194
 195          return TRUE;
 196     }
 197     return FALSE;
 198 }
 199
 200 // If file is null, try saved file name first
 201 // Returns TRUE if succeeds.
 202 bool wxTextCtrl::SaveFile(const wxString& file)
 203 {
 204     wxString theFile(file);
 205     if (theFile == "")
 206         theFile = m_fileName;
 207     if (theFile == "")
 208         return FALSE;
 209     m_fileName = theFile;
 210
 211     ofstream output((char*) (const char*) theFile);
 212     if (output.bad())
 213             return FALSE;
 214
 215     // TODO get and save text
 216
 217     return FALSE;
 218 }
 219
 220 void wxTextCtrl::WriteText(const wxString& text)
 221 {
 222     // TODO write text to control
 223 }
 224
 225 void wxTextCtrl::AppendText(const wxString& text)
 226 {
 227     // TODO append text to control
 228 }
 229
 230 void wxTextCtrl::Clear()
 231 {
 232     // TODO
 233 }
 234
 235 bool wxTextCtrl::IsModified() const
 236 {
 237     // TODO
 238     return FALSE;
 239 }
 240
 241 // Makes 'unmodified'
 242 void wxTextCtrl::DiscardEdits()
 243 {
 244     // TODO
 245 }
 246
 247 int wxTextCtrl::GetNumberOfLines() const
 248 {
 249     // TODO
 250     return 0;
 251 }
 252
 253 long wxTextCtrl::XYToPosition(long x, long y) const
 254 {
 255     // TODO
 256     return 0;
 257 }
 258
 259 void wxTextCtrl::PositionToXY(long pos, long *x, long *y) const
 260 {
 261     // TODO
 262 }
 263
 264 void wxTextCtrl::ShowPosition(long pos)
 265 {
 266     // TODO
 267 }
 268
 269 int wxTextCtrl::GetLineLength(long lineNo) const
 270 {
 271     // TODO
 272     return 0;
 273 }
 274
 275 wxString wxTextCtrl::GetLineText(long lineNo) const
 276 {
 277     // TODO
 278     return wxString("");
 279 }
 280
 281 bool wxTextCtrl::CanCopy() const
 282 {
 283     // Can copy if there's a selection
 284     long from, to;
 285     GetSelection(& from, & to);
 286     return (from != to) ;
 287 }
 288
 289 bool wxTextCtrl::CanCut() const
 290 {
 291     // Can cut if there's a selection
 292     long from, to;
 293     GetSelection(& from, & to);
 294     return (from != to) ;
 295 }
 296
 297 bool wxTextCtrl::CanPaste() const
 298 {
 299     return IsEditable() ;
 300 }
 301
 302 // Undo/redo
 303 void wxTextCtrl::Undo()
 304 {
 305     // TODO
 306 }
 307
 308 void wxTextCtrl::Redo()
 309 {
 310     // TODO
 311 }
 312
 313 bool wxTextCtrl::CanUndo() const
 314 {
 315     // TODO
 316     return FALSE;
 317 }
 318
 319 bool wxTextCtrl::CanRedo() const
 320 {
 321     // TODO
 322     return FALSE;
 323 }
 324
 325 // If the return values from and to are the same, there is no
 326 // selection.
 327 void wxTextCtrl::GetSelection(long* from, long* to) const
 328 {
 329     // TODO
 330     *from = 0;
 331     *to = 0;
 332 }
 333
 334 bool wxTextCtrl::IsEditable() const
 335 {
 336     // TODO
 337     return FALSE;
 338 }
 339
 340 void wxTextCtrl::Command(wxCommandEvent & event)
 341 {
 342     SetValue (event.GetString());
 343     ProcessCommand (event);
 344 }
 345
 346 void wxTextCtrl::OnDropFiles(wxDropFilesEvent& event)
 347 {
 348     // By default, load the first file into the text window.
 349     if (event.GetNumberOfFiles() > 0)
 350     {
 351         LoadFile(event.GetFiles()[0]);
 352     }
 353 }
 354
 355 // The streambuf code was partly taken from chapter 3 by Jerry Schwarz of
 356 // AT&T's "C++ Lanuage System Release 3.0 Library Manual" - Stein Somers
 357
 358 //=========================================================================
 359 // Called then the buffer is full (gcc 2.6.3)
 360 // or when "endl" is output (Borland 4.5)
 361 //=========================================================================
 362 // Class declaration using multiple inheritance doesn't work properly for
 363 // Borland. See note in wb_text.h.
 364 #ifndef NO_TEXT_WINDOW_STREAM
 365 int wxTextCtrl::overflow(int c)
 366 {
 367   // Make sure there is a holding area
 368   if ( allocate()==EOF )
 369   {
 370     wxError("Streambuf allocation failed","Internal error");
 371     return EOF;
 372   }
 373
 374   // Verify that there are no characters in get area
 375   if ( gptr() && gptr() < egptr() )
 376   {
 377      wxError("Who's trespassing my get area?","Internal error");
 378      return EOF;
 379   }
 380
 381   // Reset get area
 382   setg(0,0,0);
 383
 384   // Make sure there is a put area
 385   if ( ! pptr() )
 386   {
 387 /* This doesn't seem to be fatal so comment out error message */
 388 //    wxError("Put area not opened","Internal error");
 389     setp( base(), base() );
 390   }
 391
 392   // Determine how many characters have been inserted but no consumed
 393   int plen = pptr() - pbase();
 394
 395   // Now Jerry relies on the fact that the buffer is at least 2 chars
 396   // long, but the holding area "may be as small as 1" ???
 397   // And we need an additional \0, so let's keep this inefficient but
 398   // safe copy.
 399
 400   // If c!=EOF, it is a character that must also be comsumed
 401   int xtra = c==EOF? 0 : 1;
 402
 403   // Write temporary C-string to wxTextWindow
 404   {
 405   char *txt = new char[plen+xtra+1];
 406   memcpy(txt, pbase(), plen);
 407   txt[plen] = (char)c;     // append c
 408   txt[plen+xtra] = '\0';   // append '\0' or overwrite c
 409     // If the put area already contained \0, output will be truncated there
 410   AppendText(txt);
 411     delete[] txt;
 412   }
 413
 414   // Reset put area
 415   setp(pbase(), epptr());
 416
 417 #if defined(__WATCOMC__)
 418   return __NOT_EOF;
 419 #elif defined(zapeof)     // HP-UX (all cfront based?)
 420   return zapeof(c);
 421 #else
 422   return c!=EOF ? c : 0;  // this should make everybody happy
 423 #endif
 424 }
 425
 426 //=========================================================================
 427 // called then "endl" is output (gcc) or then explicit sync is done (Borland)
 428 //=========================================================================
 429 int wxTextCtrl::sync()
 430 {
 431   // Verify that there are no characters in get area
 432   if ( gptr() && gptr() < egptr() )
 433   {
 434      wxError("Who's trespassing my get area?","Internal error");
 435      return EOF;
 436   }
 437
 438   if ( pptr() && pptr() > pbase() ) return overflow(EOF);
 439
 440   return 0;
 441 /* OLD CODE
 442   int len = pptr() - pbase();
 443   char *txt = new char[len+1];
 444   strncpy(txt, pbase(), len);
 445   txt[len] = '\0';
 446   (*this) << txt;
 447   setp(pbase(), epptr());
 448   delete[] txt;
 449   return 0;
 450 */
 451 }
 452
 453 //=========================================================================
 454 // Should not be called by a "ostream". Used by a "istream"
 455 //=========================================================================
 456 int wxTextCtrl::underflow()
 457 {
 458   return EOF;
 459 }
 460 #endif
 461
 462 wxTextCtrl& wxTextCtrl::operator<<(const wxString& s)
 463 {
 464     AppendText(s);
 465     return *this;
 466 }
 467
 468 wxTextCtrl& wxTextCtrl::operator<<(float f)
 469 {
 470     wxString str;
 471     str.Printf("%.2f", f);
 472     AppendText(str);
 473     return *this;
 474 }
 475
 476 wxTextCtrl& wxTextCtrl::operator<<(double d)
 477 {
 478     wxString str;
 479     str.Printf("%.2f", d);
 480     AppendText(str);
 481     return *this;
 482 }
 483
 484 wxTextCtrl& wxTextCtrl::operator<<(int i)
 485 {
 486     wxString str;
 487     str.Printf("%d", i);
 488     AppendText(str);
 489     return *this;
 490 }
 491
 492 wxTextCtrl& wxTextCtrl::operator<<(long i)
 493 {
 494     wxString str;
 495     str.Printf("%ld", i);
 496     AppendText(str);
 497     return *this;
 498 }
 499
 500 wxTextCtrl& wxTextCtrl::operator<<(const char c)
 501 {
 502     char buf[2];
 503
 504     buf[0] = c;
 505     buf[1] = 0;
 506     AppendText(buf);
 507     return *this;
 508 }
 509
 510 void wxTextCtrl::OnCut(wxCommandEvent& event)
 511 {
 512     Cut();
 513 }
 514
 515 void wxTextCtrl::OnCopy(wxCommandEvent& event)
 516 {
 517     Copy();
 518 }
 519
 520 void wxTextCtrl::OnPaste(wxCommandEvent& event)
 521 {
 522     Paste();
 523 }
 524
 525 void wxTextCtrl::OnUndo(wxCommandEvent& event)
 526 {
 527     Undo();
 528 }
 529
 530 void wxTextCtrl::OnRedo(wxCommandEvent& event)
 531 {
 532     Redo();
 533 }
 534
 535 void wxTextCtrl::OnUpdateCut(wxUpdateUIEvent& event)
 536 {
 537     event.Enable( CanCut() );
 538 }
 539
 540 void wxTextCtrl::OnUpdateCopy(wxUpdateUIEvent& event)
 541 {
 542     event.Enable( CanCopy() );
 543 }
 544
 545 void wxTextCtrl::OnUpdatePaste(wxUpdateUIEvent& event)
 546 {
 547     event.Enable( CanPaste() );
 548 }
 549
 550 void wxTextCtrl::OnUpdateUndo(wxUpdateUIEvent& event)
 551 {
 552     event.Enable( CanUndo() );
 553 }
 554
 555 void wxTextCtrl::OnUpdateRedo(wxUpdateUIEvent& event)
 556 {
 557     event.Enable( CanRedo() );
 558 }