| 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 | // ============================================================================ |
| 13 | // declarations |
| 14 | // ============================================================================ |
| 15 | |
| 16 | // ---------------------------------------------------------------------------- |
| 17 | // headers |
| 18 | // ---------------------------------------------------------------------------- |
| 19 | |
| 20 | #ifdef __GNUG__ |
| 21 | #pragma implementation "textctrl.h" |
| 22 | #endif |
| 23 | |
| 24 | #ifdef __VMS |
| 25 | #define XtParent XTPARENT |
| 26 | #endif |
| 27 | |
| 28 | #include <sys/types.h> |
| 29 | #include <sys/stat.h> |
| 30 | #include <fstream.h> |
| 31 | #include <ctype.h> |
| 32 | |
| 33 | #include "wx/textctrl.h" |
| 34 | #include "wx/settings.h" |
| 35 | #include "wx/filefn.h" |
| 36 | #include "wx/utils.h" |
| 37 | |
| 38 | #ifdef __VMS__ |
| 39 | #pragma message disable nosimpint |
| 40 | #endif |
| 41 | #include <Xm/Text.h> |
| 42 | #ifdef __VMS__ |
| 43 | #pragma message enable nosimpint |
| 44 | #endif |
| 45 | |
| 46 | #include "wx/motif/private.h" |
| 47 | |
| 48 | // ---------------------------------------------------------------------------- |
| 49 | // private functions |
| 50 | // ---------------------------------------------------------------------------- |
| 51 | |
| 52 | // helper: inserts the new text in the value of the text ctrl and returns the |
| 53 | // result in place |
| 54 | static void MergeChangesIntoString(wxString& value, |
| 55 | XmTextVerifyCallbackStruct *textStruct); |
| 56 | |
| 57 | // callbacks |
| 58 | static void wxTextWindowChangedProc(Widget w, XtPointer clientData, XtPointer ptr); |
| 59 | static void wxTextWindowModifyProc(Widget w, XtPointer clientData, XmTextVerifyCallbackStruct *cbs); |
| 60 | static void wxTextWindowGainFocusProc(Widget w, XtPointer clientData, XmAnyCallbackStruct *cbs); |
| 61 | static void wxTextWindowLoseFocusProc(Widget w, XtPointer clientData, XmAnyCallbackStruct *cbs); |
| 62 | static void wxTextWindowActivateProc(Widget w, XtPointer clientData, XmAnyCallbackStruct *ptr); |
| 63 | |
| 64 | IMPLEMENT_DYNAMIC_CLASS(wxTextCtrl, wxControl) |
| 65 | |
| 66 | BEGIN_EVENT_TABLE(wxTextCtrl, wxControl) |
| 67 | EVT_DROP_FILES(wxTextCtrl::OnDropFiles) |
| 68 | EVT_CHAR(wxTextCtrl::OnChar) |
| 69 | |
| 70 | EVT_MENU(wxID_CUT, wxTextCtrl::OnCut) |
| 71 | EVT_MENU(wxID_COPY, wxTextCtrl::OnCopy) |
| 72 | EVT_MENU(wxID_PASTE, wxTextCtrl::OnPaste) |
| 73 | EVT_MENU(wxID_UNDO, wxTextCtrl::OnUndo) |
| 74 | EVT_MENU(wxID_REDO, wxTextCtrl::OnRedo) |
| 75 | |
| 76 | EVT_UPDATE_UI(wxID_CUT, wxTextCtrl::OnUpdateCut) |
| 77 | EVT_UPDATE_UI(wxID_COPY, wxTextCtrl::OnUpdateCopy) |
| 78 | EVT_UPDATE_UI(wxID_PASTE, wxTextCtrl::OnUpdatePaste) |
| 79 | EVT_UPDATE_UI(wxID_UNDO, wxTextCtrl::OnUpdateUndo) |
| 80 | EVT_UPDATE_UI(wxID_REDO, wxTextCtrl::OnUpdateRedo) |
| 81 | |
| 82 | END_EVENT_TABLE() |
| 83 | |
| 84 | // ============================================================================ |
| 85 | // implementation |
| 86 | // ============================================================================ |
| 87 | |
| 88 | // ---------------------------------------------------------------------------- |
| 89 | // wxTextCtrl |
| 90 | // ---------------------------------------------------------------------------- |
| 91 | |
| 92 | // Text item |
| 93 | wxTextCtrl::wxTextCtrl() |
| 94 | { |
| 95 | m_tempCallbackStruct = (void*) NULL; |
| 96 | m_modified = FALSE; |
| 97 | m_processedDefault = FALSE; |
| 98 | } |
| 99 | |
| 100 | bool wxTextCtrl::Create(wxWindow *parent, |
| 101 | wxWindowID id, |
| 102 | const wxString& value, |
| 103 | const wxPoint& pos, |
| 104 | const wxSize& size, |
| 105 | long style, |
| 106 | const wxValidator& validator, |
| 107 | const wxString& name) |
| 108 | { |
| 109 | m_tempCallbackStruct = (void*) NULL; |
| 110 | m_modified = FALSE; |
| 111 | m_processedDefault = FALSE; |
| 112 | // m_backgroundColour = parent->GetBackgroundColour(); |
| 113 | m_backgroundColour = * wxWHITE; |
| 114 | m_foregroundColour = parent->GetForegroundColour(); |
| 115 | |
| 116 | SetName(name); |
| 117 | SetValidator(validator); |
| 118 | if (parent) |
| 119 | parent->AddChild(this); |
| 120 | |
| 121 | m_windowStyle = style; |
| 122 | |
| 123 | if ( id == -1 ) |
| 124 | m_windowId = (int)NewControlId(); |
| 125 | else |
| 126 | m_windowId = id; |
| 127 | |
| 128 | Widget parentWidget = (Widget) parent->GetClientWidget(); |
| 129 | |
| 130 | bool wantHorizScrolling = ((m_windowStyle & wxHSCROLL) != 0); |
| 131 | |
| 132 | // If we don't have horizontal scrollbars, we want word wrap. |
| 133 | bool wantWordWrap = !wantHorizScrolling; |
| 134 | |
| 135 | if (m_windowStyle & wxTE_MULTILINE) |
| 136 | { |
| 137 | Arg args[2]; |
| 138 | XtSetArg (args[0], XmNscrollHorizontal, wantHorizScrolling ? True : False); |
| 139 | XtSetArg (args[1], XmNwordWrap, wantWordWrap ? True : False); |
| 140 | |
| 141 | m_mainWidget = (WXWidget) XmCreateScrolledText(parentWidget, |
| 142 | (char*)name.c_str(), |
| 143 | args, 2); |
| 144 | |
| 145 | XtVaSetValues ((Widget) m_mainWidget, |
| 146 | XmNeditable, ((style & wxTE_READONLY) ? False : True), |
| 147 | XmNeditMode, XmMULTI_LINE_EDIT, |
| 148 | NULL); |
| 149 | XtManageChild ((Widget) m_mainWidget); |
| 150 | } |
| 151 | else |
| 152 | { |
| 153 | m_mainWidget = (WXWidget)XtVaCreateManagedWidget |
| 154 | ( |
| 155 | (char*)name.c_str(), |
| 156 | xmTextWidgetClass, |
| 157 | parentWidget, |
| 158 | NULL |
| 159 | ); |
| 160 | |
| 161 | XtVaSetValues ((Widget) m_mainWidget, |
| 162 | XmNeditable, ((style & wxTE_READONLY) ? False : True), |
| 163 | NULL); |
| 164 | |
| 165 | // TODO: Is this relevant? What does it do? |
| 166 | int noCols = 2; |
| 167 | if (!value.IsNull() && (value.Length() > (unsigned int) noCols)) |
| 168 | noCols = value.Length(); |
| 169 | XtVaSetValues((Widget) m_mainWidget, |
| 170 | XmNcolumns, noCols, |
| 171 | NULL); |
| 172 | } |
| 173 | |
| 174 | // remove border if asked for |
| 175 | if ( style & wxNO_BORDER ) |
| 176 | { |
| 177 | XtVaSetValues((Widget)m_mainWidget, |
| 178 | XmNshadowThickness, 0, |
| 179 | NULL); |
| 180 | } |
| 181 | |
| 182 | if ( !!value ) |
| 183 | { |
| 184 | #if 0 |
| 185 | // don't do this because it is just linking the text to a source |
| 186 | // string which is unsafe. MB |
| 187 | // |
| 188 | XmTextSetString ((Widget) m_mainWidget, (char*)value.c_str()); |
| 189 | #else |
| 190 | // do this instead... MB |
| 191 | // |
| 192 | XtVaSetValues( (Widget) m_mainWidget, |
| 193 | XmNvalue, (char *)value.c_str(), |
| 194 | NULL); |
| 195 | #endif |
| 196 | } |
| 197 | |
| 198 | // install callbacks |
| 199 | XtAddCallback((Widget) m_mainWidget, XmNvalueChangedCallback, (XtCallbackProc)wxTextWindowChangedProc, (XtPointer)this); |
| 200 | |
| 201 | XtAddCallback((Widget) m_mainWidget, XmNmodifyVerifyCallback, (XtCallbackProc)wxTextWindowModifyProc, (XtPointer)this); |
| 202 | |
| 203 | XtAddCallback((Widget) m_mainWidget, XmNactivateCallback, (XtCallbackProc)wxTextWindowActivateProc, (XtPointer)this); |
| 204 | |
| 205 | XtAddCallback((Widget) m_mainWidget, XmNfocusCallback, (XtCallbackProc)wxTextWindowGainFocusProc, (XtPointer)this); |
| 206 | |
| 207 | XtAddCallback((Widget) m_mainWidget, XmNlosingFocusCallback, (XtCallbackProc)wxTextWindowLoseFocusProc, (XtPointer)this); |
| 208 | |
| 209 | // font |
| 210 | m_font = parent->GetFont(); |
| 211 | ChangeFont(FALSE); |
| 212 | |
| 213 | SetCanAddEventHandler(TRUE); |
| 214 | AttachWidget (parent, m_mainWidget, (WXWidget) NULL, pos.x, pos.y, size.x, size.y); |
| 215 | |
| 216 | ChangeBackgroundColour(); |
| 217 | |
| 218 | return TRUE; |
| 219 | } |
| 220 | |
| 221 | WXWidget wxTextCtrl::GetTopWidget() const |
| 222 | { |
| 223 | return ((m_windowStyle & wxTE_MULTILINE) ? (WXWidget) XtParent((Widget) m_mainWidget) : m_mainWidget); |
| 224 | } |
| 225 | |
| 226 | wxString wxTextCtrl::GetValue() const |
| 227 | { |
| 228 | wxString str; // result |
| 229 | |
| 230 | if (m_windowStyle & wxTE_PASSWORD) |
| 231 | { |
| 232 | // the value is stored always in m_value because it can't be retrieved |
| 233 | // from the text control |
| 234 | str = m_value; |
| 235 | } |
| 236 | else |
| 237 | { |
| 238 | // just get the string from Motif |
| 239 | char *s = XmTextGetString ((Widget) m_mainWidget); |
| 240 | if ( s ) |
| 241 | { |
| 242 | str = s; |
| 243 | XtFree (s); |
| 244 | } |
| 245 | //else: return empty string |
| 246 | |
| 247 | if ( m_tempCallbackStruct ) |
| 248 | { |
| 249 | // the string in the control isn't yet updated, can't use it as is |
| 250 | MergeChangesIntoString(str, (XmTextVerifyCallbackStruct *) |
| 251 | m_tempCallbackStruct); |
| 252 | } |
| 253 | } |
| 254 | |
| 255 | return str; |
| 256 | } |
| 257 | |
| 258 | void wxTextCtrl::SetValue(const wxString& value) |
| 259 | { |
| 260 | m_inSetValue = TRUE; |
| 261 | |
| 262 | #if 0 |
| 263 | // don't do this because it is just linking the text to a source |
| 264 | // string which is unsafe. MB |
| 265 | // |
| 266 | XmTextSetString ((Widget) m_mainWidget, (char*)value.c_str()); |
| 267 | #else |
| 268 | // do this instead... MB |
| 269 | // |
| 270 | XtVaSetValues( (Widget) m_mainWidget, |
| 271 | XmNvalue, (char *)value.c_str(), |
| 272 | NULL); |
| 273 | #endif |
| 274 | |
| 275 | m_inSetValue = FALSE; |
| 276 | } |
| 277 | |
| 278 | // Clipboard operations |
| 279 | void wxTextCtrl::Copy() |
| 280 | { |
| 281 | XmTextCopy((Widget) m_mainWidget, CurrentTime); |
| 282 | } |
| 283 | |
| 284 | void wxTextCtrl::Cut() |
| 285 | { |
| 286 | XmTextCut((Widget) m_mainWidget, CurrentTime); |
| 287 | } |
| 288 | |
| 289 | void wxTextCtrl::Paste() |
| 290 | { |
| 291 | XmTextPaste((Widget) m_mainWidget); |
| 292 | } |
| 293 | |
| 294 | bool wxTextCtrl::CanCopy() const |
| 295 | { |
| 296 | // Can copy if there's a selection |
| 297 | long from, to; |
| 298 | GetSelection(& from, & to); |
| 299 | return (from != to) ; |
| 300 | } |
| 301 | |
| 302 | bool wxTextCtrl::CanCut() const |
| 303 | { |
| 304 | // Can cut if there's a selection |
| 305 | long from, to; |
| 306 | GetSelection(& from, & to); |
| 307 | return (from != to) && (IsEditable()); |
| 308 | } |
| 309 | |
| 310 | bool wxTextCtrl::CanPaste() const |
| 311 | { |
| 312 | return IsEditable() ; |
| 313 | } |
| 314 | |
| 315 | // Undo/redo |
| 316 | void wxTextCtrl::Undo() |
| 317 | { |
| 318 | // Not possible in Motif |
| 319 | } |
| 320 | |
| 321 | void wxTextCtrl::Redo() |
| 322 | { |
| 323 | // Not possible in Motif |
| 324 | } |
| 325 | |
| 326 | bool wxTextCtrl::CanUndo() const |
| 327 | { |
| 328 | // No Undo in Motif |
| 329 | return FALSE; |
| 330 | } |
| 331 | |
| 332 | bool wxTextCtrl::CanRedo() const |
| 333 | { |
| 334 | // No Redo in Motif |
| 335 | return FALSE; |
| 336 | } |
| 337 | |
| 338 | // If the return values from and to are the same, there is no |
| 339 | // selection. |
| 340 | void wxTextCtrl::GetSelection(long* from, long* to) const |
| 341 | { |
| 342 | XmTextPosition left, right; |
| 343 | |
| 344 | XmTextGetSelectionPosition((Widget) m_mainWidget, & left, & right); |
| 345 | |
| 346 | *from = (long) left; |
| 347 | *to = (long) right; |
| 348 | } |
| 349 | |
| 350 | bool wxTextCtrl::IsEditable() const |
| 351 | { |
| 352 | return (XmTextGetEditable((Widget) m_mainWidget) != 0); |
| 353 | } |
| 354 | |
| 355 | void wxTextCtrl::SetEditable(bool editable) |
| 356 | { |
| 357 | XmTextSetEditable((Widget) m_mainWidget, (Boolean) editable); |
| 358 | } |
| 359 | |
| 360 | void wxTextCtrl::SetInsertionPoint(long pos) |
| 361 | { |
| 362 | XmTextSetInsertionPosition ((Widget) m_mainWidget, (XmTextPosition) pos); |
| 363 | } |
| 364 | |
| 365 | void wxTextCtrl::SetInsertionPointEnd() |
| 366 | { |
| 367 | long pos = GetLastPosition(); |
| 368 | SetInsertionPoint(pos); |
| 369 | } |
| 370 | |
| 371 | long wxTextCtrl::GetInsertionPoint() const |
| 372 | { |
| 373 | return (long) XmTextGetInsertionPosition ((Widget) m_mainWidget); |
| 374 | } |
| 375 | |
| 376 | long wxTextCtrl::GetLastPosition() const |
| 377 | { |
| 378 | return (long) XmTextGetLastPosition ((Widget) m_mainWidget); |
| 379 | } |
| 380 | |
| 381 | void wxTextCtrl::Replace(long from, long to, const wxString& value) |
| 382 | { |
| 383 | XmTextReplace ((Widget) m_mainWidget, (XmTextPosition) from, (XmTextPosition) to, |
| 384 | (char*) (const char*) value); |
| 385 | } |
| 386 | |
| 387 | void wxTextCtrl::Remove(long from, long to) |
| 388 | { |
| 389 | XmTextSetSelection ((Widget) m_mainWidget, (XmTextPosition) from, (XmTextPosition) to, |
| 390 | (Time) 0); |
| 391 | XmTextRemove ((Widget) m_mainWidget); |
| 392 | } |
| 393 | |
| 394 | void wxTextCtrl::SetSelection(long from, long to) |
| 395 | { |
| 396 | XmTextSetSelection ((Widget) m_mainWidget, (XmTextPosition) from, (XmTextPosition) to, |
| 397 | (Time) 0); |
| 398 | } |
| 399 | |
| 400 | bool wxTextCtrl::LoadFile(const wxString& file) |
| 401 | { |
| 402 | if (!wxFileExists(file)) |
| 403 | return FALSE; |
| 404 | |
| 405 | m_fileName = file; |
| 406 | |
| 407 | Clear(); |
| 408 | |
| 409 | Widget textWidget = (Widget) m_mainWidget; |
| 410 | FILE *fp = 0; |
| 411 | |
| 412 | struct stat statb; |
| 413 | if ((stat ((char*) (const char*) file, &statb) == -1) || (statb.st_mode & S_IFMT) != S_IFREG || |
| 414 | !(fp = fopen ((char*) (const char*) file, "r"))) |
| 415 | { |
| 416 | return FALSE; |
| 417 | } |
| 418 | else |
| 419 | { |
| 420 | long len = statb.st_size; |
| 421 | char *text; |
| 422 | if (!(text = XtMalloc ((unsigned) (len + 1)))) |
| 423 | { |
| 424 | fclose (fp); |
| 425 | return FALSE; |
| 426 | } |
| 427 | if (fread (text, sizeof (char), len, fp) != (size_t) len) |
| 428 | { |
| 429 | } |
| 430 | fclose (fp); |
| 431 | |
| 432 | text[len] = 0; |
| 433 | XmTextSetString (textWidget, text); |
| 434 | // m_textPosition = len; |
| 435 | XtFree (text); |
| 436 | m_modified = FALSE; |
| 437 | return TRUE; |
| 438 | } |
| 439 | } |
| 440 | |
| 441 | // If file is null, try saved file name first |
| 442 | // Returns TRUE if succeeds. |
| 443 | bool wxTextCtrl::SaveFile(const wxString& file) |
| 444 | { |
| 445 | wxString theFile(file); |
| 446 | if (theFile == "") |
| 447 | theFile = m_fileName; |
| 448 | if (theFile == "") |
| 449 | return FALSE; |
| 450 | m_fileName = theFile; |
| 451 | |
| 452 | Widget textWidget = (Widget) m_mainWidget; |
| 453 | FILE *fp; |
| 454 | |
| 455 | if (!(fp = fopen ((char*) (const char*) theFile, "w"))) |
| 456 | { |
| 457 | return FALSE; |
| 458 | } |
| 459 | else |
| 460 | { |
| 461 | char *text = XmTextGetString (textWidget); |
| 462 | long len = XmTextGetLastPosition (textWidget); |
| 463 | |
| 464 | if (fwrite (text, sizeof (char), len, fp) != (size_t) len) |
| 465 | { |
| 466 | // Did not write whole file |
| 467 | } |
| 468 | // Make sure newline terminates the file |
| 469 | if (text[len - 1] != '\n') |
| 470 | fputc ('\n', fp); |
| 471 | |
| 472 | fclose (fp); |
| 473 | XtFree (text); |
| 474 | m_modified = FALSE; |
| 475 | return TRUE; |
| 476 | } |
| 477 | } |
| 478 | |
| 479 | void wxTextCtrl::WriteText(const wxString& text) |
| 480 | { |
| 481 | long textPosition = GetInsertionPoint() + strlen (text); |
| 482 | XmTextInsert ((Widget) m_mainWidget, GetInsertionPoint(), (char*) (const char*) text); |
| 483 | XtVaSetValues ((Widget) m_mainWidget, XmNcursorPosition, textPosition, NULL); |
| 484 | SetInsertionPoint(textPosition); |
| 485 | XmTextShowPosition ((Widget) m_mainWidget, textPosition); |
| 486 | m_modified = TRUE; |
| 487 | } |
| 488 | |
| 489 | void wxTextCtrl::AppendText(const wxString& text) |
| 490 | { |
| 491 | long textPosition = GetLastPosition() + strlen(text); |
| 492 | XmTextInsert ((Widget) m_mainWidget, GetLastPosition(), (char*) (const char*) text); |
| 493 | XtVaSetValues ((Widget) m_mainWidget, XmNcursorPosition, textPosition, NULL); |
| 494 | SetInsertionPoint(textPosition); |
| 495 | XmTextShowPosition ((Widget) m_mainWidget, textPosition); |
| 496 | m_modified = TRUE; |
| 497 | } |
| 498 | |
| 499 | void wxTextCtrl::Clear() |
| 500 | { |
| 501 | XmTextSetString ((Widget) m_mainWidget, ""); |
| 502 | m_modified = FALSE; |
| 503 | } |
| 504 | |
| 505 | bool wxTextCtrl::IsModified() const |
| 506 | { |
| 507 | return m_modified; |
| 508 | } |
| 509 | |
| 510 | // Makes 'unmodified' |
| 511 | void wxTextCtrl::DiscardEdits() |
| 512 | { |
| 513 | m_modified = FALSE; |
| 514 | } |
| 515 | |
| 516 | int wxTextCtrl::GetNumberOfLines() const |
| 517 | { |
| 518 | // HIDEOUSLY inefficient, but we have no choice. |
| 519 | char *s = XmTextGetString ((Widget) m_mainWidget); |
| 520 | if (s) |
| 521 | { |
| 522 | long i = 0; |
| 523 | int currentLine = 0; |
| 524 | bool finished = FALSE; |
| 525 | while (!finished) |
| 526 | { |
| 527 | int ch = s[i]; |
| 528 | if (ch == '\n') |
| 529 | { |
| 530 | currentLine++; |
| 531 | i++; |
| 532 | } |
| 533 | else if (ch == 0) |
| 534 | { |
| 535 | finished = TRUE; |
| 536 | } |
| 537 | else |
| 538 | i++; |
| 539 | } |
| 540 | |
| 541 | XtFree (s); |
| 542 | return currentLine; |
| 543 | } |
| 544 | return 0; |
| 545 | } |
| 546 | |
| 547 | long wxTextCtrl::XYToPosition(long x, long y) const |
| 548 | { |
| 549 | /* It seems, that there is a bug in some versions of the Motif library, |
| 550 | so the original wxWin-Code doesn't work. */ |
| 551 | /* |
| 552 | Widget textWidget = (Widget) handle; |
| 553 | return (long) XmTextXYToPos (textWidget, (Position) x, (Position) y); |
| 554 | */ |
| 555 | /* Now a little workaround: */ |
| 556 | long r=0; |
| 557 | for (int i=0; i<y; i++) r+=(GetLineLength(i)+1); |
| 558 | return r+x; |
| 559 | } |
| 560 | |
| 561 | bool wxTextCtrl::PositionToXY(long pos, long *x, long *y) const |
| 562 | { |
| 563 | Position xx, yy; |
| 564 | XmTextPosToXY((Widget) m_mainWidget, pos, &xx, &yy); |
| 565 | if ( x ) |
| 566 | *x = xx; |
| 567 | if ( y ) |
| 568 | *y = yy; |
| 569 | |
| 570 | return TRUE; |
| 571 | } |
| 572 | |
| 573 | void wxTextCtrl::ShowPosition(long pos) |
| 574 | { |
| 575 | XmTextShowPosition ((Widget) m_mainWidget, (XmTextPosition) pos); |
| 576 | } |
| 577 | |
| 578 | int wxTextCtrl::GetLineLength(long lineNo) const |
| 579 | { |
| 580 | wxString str = GetLineText (lineNo); |
| 581 | return (int) str.Length(); |
| 582 | } |
| 583 | |
| 584 | wxString wxTextCtrl::GetLineText(long lineNo) const |
| 585 | { |
| 586 | // HIDEOUSLY inefficient, but we have no choice. |
| 587 | char *s = XmTextGetString ((Widget) m_mainWidget); |
| 588 | |
| 589 | if (s) |
| 590 | { |
| 591 | wxString buf(""); |
| 592 | long i; |
| 593 | int currentLine = 0; |
| 594 | for (i = 0; currentLine != lineNo && s[i]; i++ ) |
| 595 | if (s[i] == '\n') |
| 596 | currentLine++; |
| 597 | // Now get the text |
| 598 | int j; |
| 599 | for (j = 0; s[i] && s[i] != '\n'; i++, j++ ) |
| 600 | buf += s[i]; |
| 601 | |
| 602 | XtFree(s); |
| 603 | return buf; |
| 604 | } |
| 605 | else |
| 606 | return wxEmptyString; |
| 607 | } |
| 608 | |
| 609 | /* |
| 610 | * Text item |
| 611 | */ |
| 612 | |
| 613 | void wxTextCtrl::Command(wxCommandEvent & event) |
| 614 | { |
| 615 | SetValue (event.GetString()); |
| 616 | ProcessCommand (event); |
| 617 | } |
| 618 | |
| 619 | void wxTextCtrl::OnDropFiles(wxDropFilesEvent& event) |
| 620 | { |
| 621 | // By default, load the first file into the text window. |
| 622 | if (event.GetNumberOfFiles() > 0) |
| 623 | { |
| 624 | LoadFile(event.GetFiles()[0]); |
| 625 | } |
| 626 | } |
| 627 | |
| 628 | void wxTextCtrl::OnChar(wxKeyEvent& event) |
| 629 | { |
| 630 | // Indicates that we should generate a normal command, because |
| 631 | // we're letting default behaviour happen (otherwise it's vetoed |
| 632 | // by virtue of overriding OnChar) |
| 633 | m_processedDefault = TRUE; |
| 634 | |
| 635 | if (m_tempCallbackStruct) |
| 636 | { |
| 637 | XmTextVerifyCallbackStruct *textStruct = |
| 638 | (XmTextVerifyCallbackStruct *) m_tempCallbackStruct; |
| 639 | textStruct->doit = True; |
| 640 | if (isascii(event.m_keyCode) && (textStruct->text->length == 1)) |
| 641 | { |
| 642 | textStruct->text->ptr[0] = ((event.m_keyCode == WXK_RETURN) ? 10 : event.m_keyCode); |
| 643 | } |
| 644 | } |
| 645 | } |
| 646 | |
| 647 | void wxTextCtrl::ChangeFont(bool keepOriginalSize) |
| 648 | { |
| 649 | wxWindow::ChangeFont(keepOriginalSize); |
| 650 | } |
| 651 | |
| 652 | void wxTextCtrl::ChangeBackgroundColour() |
| 653 | { |
| 654 | wxWindow::ChangeBackgroundColour(); |
| 655 | |
| 656 | /* TODO: should scrollbars be affected? Should probably have separate |
| 657 | * function to change them (by default, taken from wxSystemSettings) |
| 658 | */ |
| 659 | if (m_windowStyle & wxTE_MULTILINE) |
| 660 | { |
| 661 | Widget parent = XtParent ((Widget) m_mainWidget); |
| 662 | Widget hsb, vsb; |
| 663 | |
| 664 | XtVaGetValues (parent, |
| 665 | XmNhorizontalScrollBar, &hsb, |
| 666 | XmNverticalScrollBar, &vsb, |
| 667 | NULL); |
| 668 | wxColour backgroundColour = wxSystemSettings::GetSystemColour(wxSYS_COLOUR_3DFACE); |
| 669 | if (hsb) |
| 670 | DoChangeBackgroundColour((WXWidget) hsb, backgroundColour, TRUE); |
| 671 | if (vsb) |
| 672 | DoChangeBackgroundColour((WXWidget) vsb, backgroundColour, TRUE); |
| 673 | |
| 674 | DoChangeBackgroundColour((WXWidget) parent, m_backgroundColour, TRUE); |
| 675 | } |
| 676 | } |
| 677 | |
| 678 | void wxTextCtrl::ChangeForegroundColour() |
| 679 | { |
| 680 | wxWindow::ChangeForegroundColour(); |
| 681 | |
| 682 | if (m_windowStyle & wxTE_MULTILINE) |
| 683 | { |
| 684 | Widget parent = XtParent ((Widget) m_mainWidget); |
| 685 | Widget hsb, vsb; |
| 686 | |
| 687 | XtVaGetValues (parent, |
| 688 | XmNhorizontalScrollBar, &hsb, |
| 689 | XmNverticalScrollBar, &vsb, |
| 690 | NULL); |
| 691 | |
| 692 | /* TODO: should scrollbars be affected? Should probably have separate |
| 693 | * function to change them (by default, taken from wxSystemSettings) |
| 694 | if (hsb) |
| 695 | DoChangeForegroundColour((WXWidget) hsb, m_foregroundColour); |
| 696 | if (vsb) |
| 697 | DoChangeForegroundColour((WXWidget) vsb, m_foregroundColour); |
| 698 | */ |
| 699 | DoChangeForegroundColour((WXWidget) parent, m_foregroundColour); |
| 700 | } |
| 701 | } |
| 702 | |
| 703 | void wxTextCtrl::DoSendEvents(void *wxcbs, long keycode) |
| 704 | { |
| 705 | // we're in process of updating the text control |
| 706 | m_tempCallbackStruct = wxcbs; |
| 707 | |
| 708 | XmTextVerifyCallbackStruct *cbs = (XmTextVerifyCallbackStruct *)wxcbs; |
| 709 | |
| 710 | wxKeyEvent event (wxEVT_CHAR); |
| 711 | event.SetId(GetId()); |
| 712 | event.m_keyCode = keycode; |
| 713 | event.SetEventObject(this); |
| 714 | |
| 715 | // Only if wxTextCtrl::OnChar is called will this be set to True (and |
| 716 | // the character passed through) |
| 717 | cbs->doit = False; |
| 718 | |
| 719 | GetEventHandler()->ProcessEvent(event); |
| 720 | |
| 721 | if ( !InSetValue() && m_processedDefault ) |
| 722 | { |
| 723 | // Can generate a command |
| 724 | wxCommandEvent commandEvent(wxEVT_COMMAND_TEXT_UPDATED, GetId()); |
| 725 | commandEvent.SetEventObject(this); |
| 726 | ProcessCommand(commandEvent); |
| 727 | } |
| 728 | |
| 729 | // do it after the (user) event handlers processed the events because |
| 730 | // otherwise GetValue() would return incorrect (not yet updated value) |
| 731 | m_tempCallbackStruct = NULL; |
| 732 | } |
| 733 | |
| 734 | // ---------------------------------------------------------------------------- |
| 735 | // helpers and Motif callbacks |
| 736 | // ---------------------------------------------------------------------------- |
| 737 | |
| 738 | static void MergeChangesIntoString(wxString& value, |
| 739 | XmTextVerifyCallbackStruct *cbs) |
| 740 | { |
| 741 | /* _sm_ |
| 742 | * At least on my system (SunOS 4.1.3 + Motif 1.2), you need to think of |
| 743 | * every event as a replace event. cbs->text->ptr gives the replacement |
| 744 | * text, cbs->startPos gives the index of the first char affected by the |
| 745 | * replace, and cbs->endPos gives the index one more than the last char |
| 746 | * affected by the replace (startPos == endPos implies an empty range). |
| 747 | * Hence, a deletion is represented by replacing all input text with a |
| 748 | * blank string ("", *not* NULL!). A simple insertion that does not |
| 749 | * overwrite any text has startPos == endPos. |
| 750 | */ |
| 751 | |
| 752 | if ( !value ) |
| 753 | { |
| 754 | // easy case: the ol value was empty |
| 755 | value = cbs->text->ptr; |
| 756 | } |
| 757 | else |
| 758 | { |
| 759 | // merge the changes into the value |
| 760 | const char * const passwd = value; |
| 761 | int len = value.length(); |
| 762 | |
| 763 | len += strlen(cbs->text->ptr) + 1; // + new text (if any) + NUL |
| 764 | len -= cbs->endPos - cbs->startPos; // - text from affected region. |
| 765 | |
| 766 | char * newS = new char [len]; |
| 767 | char * dest = newS, |
| 768 | * insert = cbs->text->ptr; |
| 769 | |
| 770 | // Copy (old) text from passwd, up to the start posn of the change. |
| 771 | int i; |
| 772 | const char * p = passwd; |
| 773 | for (i = 0; i < cbs->startPos; ++i) |
| 774 | *dest++ = *p++; |
| 775 | |
| 776 | // Copy the text to be inserted). |
| 777 | while (*insert) |
| 778 | *dest++ = *insert++; |
| 779 | |
| 780 | // Finally, copy into newS any remaining text from passwd[endPos] on. |
| 781 | for (p = passwd + cbs->endPos; *p; ) |
| 782 | *dest++ = *p++; |
| 783 | *dest = 0; |
| 784 | |
| 785 | value = newS; |
| 786 | |
| 787 | delete[] newS; |
| 788 | } |
| 789 | } |
| 790 | |
| 791 | static void |
| 792 | wxTextWindowChangedProc (Widget w, XtPointer clientData, XtPointer WXUNUSED(ptr)) |
| 793 | { |
| 794 | if (!wxGetWindowFromTable(w)) |
| 795 | // Widget has been deleted! |
| 796 | return; |
| 797 | |
| 798 | wxTextCtrl *tw = (wxTextCtrl *) clientData; |
| 799 | tw->SetModified(TRUE); |
| 800 | } |
| 801 | |
| 802 | static void |
| 803 | wxTextWindowModifyProc (Widget WXUNUSED(w), XtPointer clientData, XmTextVerifyCallbackStruct *cbs) |
| 804 | { |
| 805 | wxTextCtrl *tw = (wxTextCtrl *) clientData; |
| 806 | tw->m_processedDefault = FALSE; |
| 807 | |
| 808 | // First, do some stuff if it's a password control: in this case, we need |
| 809 | // to store the string inside the class because GetValue() can't retrieve |
| 810 | // it from the text ctrl. We do *not* do it in other circumstances because |
| 811 | // it would double the amount of memory needed. |
| 812 | |
| 813 | if ( tw->GetWindowStyleFlag() & wxTE_PASSWORD ) |
| 814 | { |
| 815 | MergeChangesIntoString(tw->m_value, cbs); |
| 816 | |
| 817 | if ( cbs->text->length > 0 ) |
| 818 | { |
| 819 | int i; |
| 820 | for (i = 0; i < cbs->text->length; ++i) |
| 821 | cbs->text->ptr[i] = '*'; |
| 822 | cbs->text->ptr[i] = '\0'; |
| 823 | } |
| 824 | } |
| 825 | |
| 826 | // If we're already within an OnChar, return: probably a programmatic |
| 827 | // insertion. |
| 828 | if (tw->m_tempCallbackStruct) |
| 829 | return; |
| 830 | |
| 831 | // Check for a backspace |
| 832 | if (cbs->startPos == (cbs->currInsert - 1)) |
| 833 | { |
| 834 | tw->DoSendEvents((void *)cbs, WXK_DELETE); |
| 835 | |
| 836 | return; |
| 837 | } |
| 838 | |
| 839 | // Pasting operation: let it through without calling OnChar |
| 840 | if (cbs->text->length > 1) |
| 841 | return; |
| 842 | |
| 843 | // Something other than text |
| 844 | if (cbs->text->ptr == NULL) |
| 845 | return; |
| 846 | |
| 847 | // normal key press |
| 848 | char ch = cbs->text->ptr[0]; |
| 849 | tw->DoSendEvents((void *)cbs, ch == '\n' ? '\r' : ch); |
| 850 | } |
| 851 | |
| 852 | static void |
| 853 | wxTextWindowGainFocusProc (Widget w, XtPointer clientData, XmAnyCallbackStruct *WXUNUSED(cbs)) |
| 854 | { |
| 855 | if (!wxGetWindowFromTable(w)) |
| 856 | return; |
| 857 | |
| 858 | wxTextCtrl *tw = (wxTextCtrl *) clientData; |
| 859 | wxFocusEvent event(wxEVT_SET_FOCUS, tw->GetId()); |
| 860 | event.SetEventObject(tw); |
| 861 | tw->GetEventHandler()->ProcessEvent(event); |
| 862 | } |
| 863 | |
| 864 | static void |
| 865 | wxTextWindowLoseFocusProc (Widget w, XtPointer clientData, XmAnyCallbackStruct *WXUNUSED(cbs)) |
| 866 | { |
| 867 | if (!wxGetWindowFromTable(w)) |
| 868 | return; |
| 869 | |
| 870 | wxTextCtrl *tw = (wxTextCtrl *) clientData; |
| 871 | wxFocusEvent event(wxEVT_KILL_FOCUS, tw->GetId()); |
| 872 | event.SetEventObject(tw); |
| 873 | tw->GetEventHandler()->ProcessEvent(event); |
| 874 | } |
| 875 | |
| 876 | static void wxTextWindowActivateProc(Widget w, XtPointer clientData, |
| 877 | XmAnyCallbackStruct *WXUNUSED(ptr)) |
| 878 | { |
| 879 | if (!wxGetWindowFromTable(w)) |
| 880 | return; |
| 881 | |
| 882 | wxTextCtrl *tw = (wxTextCtrl *) clientData; |
| 883 | |
| 884 | if (tw->InSetValue()) |
| 885 | return; |
| 886 | |
| 887 | wxCommandEvent event(wxEVT_COMMAND_TEXT_ENTER); |
| 888 | event.SetId(tw->GetId()); |
| 889 | event.SetEventObject(tw); |
| 890 | tw->ProcessCommand(event); |
| 891 | } |
| 892 | |
| 893 | void wxTextCtrl::OnCut(wxCommandEvent& WXUNUSED(event)) |
| 894 | { |
| 895 | Cut(); |
| 896 | } |
| 897 | |
| 898 | void wxTextCtrl::OnCopy(wxCommandEvent& WXUNUSED(event)) |
| 899 | { |
| 900 | Copy(); |
| 901 | } |
| 902 | |
| 903 | void wxTextCtrl::OnPaste(wxCommandEvent& WXUNUSED(event)) |
| 904 | { |
| 905 | Paste(); |
| 906 | } |
| 907 | |
| 908 | void wxTextCtrl::OnUndo(wxCommandEvent& WXUNUSED(event)) |
| 909 | { |
| 910 | Undo(); |
| 911 | } |
| 912 | |
| 913 | void wxTextCtrl::OnRedo(wxCommandEvent& WXUNUSED(event)) |
| 914 | { |
| 915 | Redo(); |
| 916 | } |
| 917 | |
| 918 | void wxTextCtrl::OnUpdateCut(wxUpdateUIEvent& event) |
| 919 | { |
| 920 | event.Enable( CanCut() ); |
| 921 | } |
| 922 | |
| 923 | void wxTextCtrl::OnUpdateCopy(wxUpdateUIEvent& event) |
| 924 | { |
| 925 | event.Enable( CanCopy() ); |
| 926 | } |
| 927 | |
| 928 | void wxTextCtrl::OnUpdatePaste(wxUpdateUIEvent& event) |
| 929 | { |
| 930 | event.Enable( CanPaste() ); |
| 931 | } |
| 932 | |
| 933 | void wxTextCtrl::OnUpdateUndo(wxUpdateUIEvent& event) |
| 934 | { |
| 935 | event.Enable( CanUndo() ); |
| 936 | } |
| 937 | |
| 938 | void wxTextCtrl::OnUpdateRedo(wxUpdateUIEvent& event) |
| 939 | { |
| 940 | event.Enable( CanRedo() ); |
| 941 | } |