src/motif/textctrl.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        textctrl.cpp
   3 // Purpose:     wxTextCtrl
   4 // Author:      Julian Smart
   5 // Modified by:
   6 // Created:     17/09/98
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Julian Smart
   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 END_EVENT_TABLE()
  39 #endif
  40
  41 // Text item
  42 wxTextCtrl::wxTextCtrl()
  43 #ifndef NO_TEXT_WINDOW_STREAM
  44  :streambuf()
  45 #endif
  46 {
  47     m_fileName = "";
  48 }
  49
  50 bool wxTextCtrl::Create(wxWindow *parent, wxWindowID id,
  51                    const wxString& value,
  52            const wxPoint& pos,
  53            const wxSize& size, long style,
  54            const wxValidator& validator,
  55            const wxString& name)
  56 {
  57     m_fileName = "";
  58     SetName(name);
  59     SetValidator(validator);
  60     if (parent) parent->AddChild(this);
  61
  62     m_windowStyle = style;
  63
  64     if ( id == -1 )
  65             m_windowId = (int)NewControlId();
  66     else
  67             m_windowId = id;
  68
  69     return TRUE;
  70 }
  71
  72 wxString wxTextCtrl::GetValue() const
  73 {
  74     // TODO
  75     return wxString("");
  76 }
  77
  78 void wxTextCtrl::SetValue(const wxString& value)
  79 {
  80     // TODO
  81 }
  82
  83 void wxTextCtrl::SetSize(int x, int y, int width, int height, int sizeFlags)
  84 {
  85     // TODO
  86 }
  87
  88 // Clipboard operations
  89 void wxTextCtrl::Copy()
  90 {
  91     // TODO
  92 }
  93
  94 void wxTextCtrl::Cut()
  95 {
  96     // TODO
  97 }
  98
  99 void wxTextCtrl::Paste()
 100 {
 101     // TODO
 102 }
 103
 104 void wxTextCtrl::SetEditable(bool editable)
 105 {
 106     // TODO
 107 }
 108
 109 void wxTextCtrl::SetInsertionPoint(long pos)
 110 {
 111     // TODO
 112 }
 113
 114 void wxTextCtrl::SetInsertionPointEnd()
 115 {
 116     long pos = GetLastPosition();
 117     SetInsertionPoint(pos);
 118 }
 119
 120 long wxTextCtrl::GetInsertionPoint() const
 121 {
 122     // TODO
 123     return 0;
 124 }
 125
 126 long wxTextCtrl::GetLastPosition() const
 127 {
 128     // TODO
 129     return 0;
 130 }
 131
 132 void wxTextCtrl::Replace(long from, long to, const wxString& value)
 133 {
 134     // TODO
 135 }
 136
 137 void wxTextCtrl::Remove(long from, long to)
 138 {
 139     // TODO
 140 }
 141
 142 void wxTextCtrl::SetSelection(long from, long to)
 143 {
 144     // TODO
 145 }
 146
 147 bool wxTextCtrl::LoadFile(const wxString& file)
 148 {
 149     if (!wxFileExists(file))
 150         return FALSE;
 151
 152     m_fileName = file;
 153
 154     Clear();
 155
 156     ifstream input((char*) (const char*) file, ios::nocreate | ios::in);
 157
 158     if (!input.bad())
 159     {
 160         struct stat stat_buf;
 161         if (stat(file, &stat_buf) < 0)
 162             return FALSE;
 163         // This may need to be a bigger buffer than the file size suggests,
 164         // if it's a UNIX file. Give it an extra 1000 just in case.
 165         char *tmp_buffer = (char*)malloc((size_t)(stat_buf.st_size+1+1000));
 166         long no_lines = 0;
 167         long pos = 0;
 168         while (!input.eof() && input.peek() != EOF)
 169         {
 170             input.getline(wxBuffer, 500);
 171                 int len = strlen(wxBuffer);
 172                 wxBuffer[len] = 13;
 173                 wxBuffer[len+1] = 10;
 174                 wxBuffer[len+2] = 0;
 175                 strcpy(tmp_buffer+pos, wxBuffer);
 176                 pos += strlen(wxBuffer);
 177                 no_lines++;
 178          }
 179
 180          // TODO add line
 181
 182          free(tmp_buffer);
 183
 184          return TRUE;
 185     }
 186     return FALSE;
 187 }
 188
 189 // If file is null, try saved file name first
 190 // Returns TRUE if succeeds.
 191 bool wxTextCtrl::SaveFile(const wxString& file)
 192 {
 193     wxString theFile(file);
 194     if (theFile == "")
 195         theFile = m_fileName;
 196     if (theFile == "")
 197         return FALSE;
 198     m_fileName = theFile;
 199
 200     ofstream output((char*) (const char*) theFile);
 201     if (output.bad())
 202             return FALSE;
 203
 204     // TODO get and save text
 205
 206     return FALSE;
 207 }
 208
 209 void wxTextCtrl::WriteText(const wxString& text)
 210 {
 211     // TODO write text to control
 212 }
 213
 214 void wxTextCtrl::Clear()
 215 {
 216     // TODO
 217 }
 218
 219 bool wxTextCtrl::IsModified() const
 220 {
 221     // TODO
 222     return FALSE;
 223 }
 224
 225 // Makes 'unmodified'
 226 void wxTextCtrl::DiscardEdits()
 227 {
 228     // TODO
 229 }
 230
 231 int wxTextCtrl::GetNumberOfLines() const
 232 {
 233     // TODO
 234     return 0;
 235 }
 236
 237 long wxTextCtrl::XYToPosition(long x, long y) const
 238 {
 239     // TODO
 240     return 0;
 241 }
 242
 243 void wxTextCtrl::PositionToXY(long pos, long *x, long *y) const
 244 {
 245     // TODO
 246 }
 247
 248 void wxTextCtrl::ShowPosition(long pos)
 249 {
 250     // TODO
 251 }
 252
 253 int wxTextCtrl::GetLineLength(long lineNo) const
 254 {
 255     // TODO
 256     return 0;
 257 }
 258
 259 wxString wxTextCtrl::GetLineText(long lineNo) const
 260 {
 261     // TODO
 262     return wxString("");
 263 }
 264
 265 /*
 266  * Text item
 267  */
 268
 269 void wxTextCtrl::Command(wxCommandEvent & event)
 270 {
 271     SetValue (event.GetString());
 272     ProcessCommand (event);
 273 }
 274
 275 void wxTextCtrl::OnDropFiles(wxDropFilesEvent& event)
 276 {
 277     // By default, load the first file into the text window.
 278     if (event.GetNumberOfFiles() > 0)
 279     {
 280         LoadFile(event.GetFiles()[0]);
 281     }
 282 }
 283
 284 // The streambuf code was partly taken from chapter 3 by Jerry Schwarz of
 285 // AT&T's "C++ Lanuage System Release 3.0 Library Manual" - Stein Somers
 286
 287 //=========================================================================
 288 // Called then the buffer is full (gcc 2.6.3)
 289 // or when "endl" is output (Borland 4.5)
 290 //=========================================================================
 291 // Class declaration using multiple inheritance doesn't work properly for
 292 // Borland. See note in wb_text.h.
 293 #ifndef NO_TEXT_WINDOW_STREAM
 294 int wxTextCtrl::overflow(int c)
 295 {
 296   // Make sure there is a holding area
 297   if ( allocate()==EOF )
 298   {
 299     wxError("Streambuf allocation failed","Internal error");
 300     return EOF;
 301   }
 302
 303   // Verify that there are no characters in get area
 304   if ( gptr() && gptr() < egptr() )
 305   {
 306      wxError("Who's trespassing my get area?","Internal error");
 307      return EOF;
 308   }
 309
 310   // Reset get area
 311   setg(0,0,0);
 312
 313   // Make sure there is a put area
 314   if ( ! pptr() )
 315   {
 316 /* This doesn't seem to be fatal so comment out error message */
 317 //    wxError("Put area not opened","Internal error");
 318     setp( base(), base() );
 319   }
 320
 321   // Determine how many characters have been inserted but no consumed
 322   int plen = pptr() - pbase();
 323
 324   // Now Jerry relies on the fact that the buffer is at least 2 chars
 325   // long, but the holding area "may be as small as 1" ???
 326   // And we need an additional \0, so let's keep this inefficient but
 327   // safe copy.
 328
 329   // If c!=EOF, it is a character that must also be comsumed
 330   int xtra = c==EOF? 0 : 1;
 331
 332   // Write temporary C-string to wxTextWindow
 333   {
 334   char *txt = new char[plen+xtra+1];
 335   memcpy(txt, pbase(), plen);
 336   txt[plen] = (char)c;     // append c
 337   txt[plen+xtra] = '\0';   // append '\0' or overwrite c
 338     // If the put area already contained \0, output will be truncated there
 339   WriteText(txt);
 340     delete[] txt;
 341   }
 342
 343   // Reset put area
 344   setp(pbase(), epptr());
 345
 346 #if defined(__WATCOMC__)
 347   return __NOT_EOF;
 348 #elif defined(zapeof)     // HP-UX (all cfront based?)
 349   return zapeof(c);
 350 #else
 351   return c!=EOF ? c : 0;  // this should make everybody happy
 352 #endif
 353 }
 354
 355 //=========================================================================
 356 // called then "endl" is output (gcc) or then explicit sync is done (Borland)
 357 //=========================================================================
 358 int wxTextCtrl::sync()
 359 {
 360   // Verify that there are no characters in get area
 361   if ( gptr() && gptr() < egptr() )
 362   {
 363      wxError("Who's trespassing my get area?","Internal error");
 364      return EOF;
 365   }
 366
 367   if ( pptr() && pptr() > pbase() ) return overflow(EOF);
 368
 369   return 0;
 370 /* OLD CODE
 371   int len = pptr() - pbase();
 372   char *txt = new char[len+1];
 373   strncpy(txt, pbase(), len);
 374   txt[len] = '\0';
 375   (*this) << txt;
 376   setp(pbase(), epptr());
 377   delete[] txt;
 378   return 0;
 379 */
 380 }
 381
 382 //=========================================================================
 383 // Should not be called by a "ostream". Used by a "istream"
 384 //=========================================================================
 385 int wxTextCtrl::underflow()
 386 {
 387   return EOF;
 388 }
 389 #endif
 390
 391 wxTextCtrl& wxTextCtrl::operator<<(const wxString& s)
 392 {
 393     WriteText(s);
 394     return *this;
 395 }
 396
 397 wxTextCtrl& wxTextCtrl::operator<<(float f)
 398 {
 399     wxString str;
 400     str.Printf("%.2f", f);
 401     WriteText(str);
 402     return *this;
 403 }
 404
 405 wxTextCtrl& wxTextCtrl::operator<<(double d)
 406 {
 407     wxString str;
 408     str.Printf("%.2f", d);
 409     WriteText(str);
 410     return *this;
 411 }
 412
 413 wxTextCtrl& wxTextCtrl::operator<<(int i)
 414 {
 415     wxString str;
 416     str.Printf("%d", i);
 417     WriteText(str);
 418     return *this;
 419 }
 420
 421 wxTextCtrl& wxTextCtrl::operator<<(long i)
 422 {
 423     wxString str;
 424     str.Printf("%ld", i);
 425     WriteText(str);
 426     return *this;
 427 }
 428
 429 wxTextCtrl& wxTextCtrl::operator<<(const char c)
 430 {
 431     char buf[2];
 432
 433     buf[0] = c;
 434     buf[1] = 0;
 435     WriteText(buf);
 436     return *this;
 437 }
 438