samples/widgets/textctrl.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Program:     wxWindows Widgets Sample
   3 // Name:        textctrl.cpp
   4 // Purpose:     part of the widgets sample showing wxTextCtrl
   5 // Author:      Vadim Zeitlin
   6 // Created:     27.03.01
   7 // Id:          $Id$
   8 // Copyright:   (c) 2001 Vadim Zeitlin
   9 // License:     wxWindows license
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 // ============================================================================
  13 // declarations
  14 // ============================================================================
  15
  16 // ----------------------------------------------------------------------------
  17 // headers
  18 // ----------------------------------------------------------------------------
  19
  20 // for compilers that support precompilation, includes "wx/wx.h".
  21 #include "wx/wxprec.h"
  22
  23 #ifdef __BORLANDC__
  24     #pragma hdrstop
  25 #endif
  26
  27 // for all others, include the necessary headers
  28 #ifndef WX_PRECOMP
  29     #include "wx/log.h"
  30     #include "wx/timer.h"
  31
  32     #include "wx/bitmap.h"
  33     #include "wx/button.h"
  34     #include "wx/checkbox.h"
  35     #include "wx/radiobox.h"
  36     #include "wx/statbox.h"
  37     #include "wx/stattext.h"
  38     #include "wx/textctrl.h"
  39 #endif
  40
  41 #include "wx/sizer.h"
  42
  43 #include "widgets.h"
  44
  45 #include "icons/text.xpm"
  46
  47 // ----------------------------------------------------------------------------
  48 // constants
  49 // ----------------------------------------------------------------------------
  50
  51 // control ids
  52 enum
  53 {
  54     TextPage_Reset = 100,
  55
  56     TextPage_Set,
  57     TextPage_Add,
  58     TextPage_Insert,
  59     TextPage_Clear,
  60     TextPage_Load,
  61
  62     TextPage_Password,
  63     TextPage_WrapLines,
  64     TextPage_Textctrl
  65 };
  66
  67 // textctrl line number radiobox values
  68 enum TextLines
  69 {
  70     TextLines_Single,
  71     TextLines_Multi
  72 };
  73
  74 #ifdef __WXMSW__
  75
  76 // textctrl kind values
  77 enum TextKind
  78 {
  79     TextKind_Plain,
  80     TextKind_Rich,
  81     TextKind_Rich2
  82 };
  83
  84 #endif // __WXMSW__
  85
  86 // default values for the controls
  87 static const struct ControlValues
  88 {
  89     TextLines textLines;
  90     bool password;
  91     bool wraplines;
  92     bool readonly;
  93 #ifdef __WXMSW__
  94     TextKind textKind;
  95 #endif // __WXMSW__
  96 } DEFAULTS =
  97 {
  98     TextLines_Multi,    // multiline
  99     FALSE,              // not password
 100     TRUE,               // do wrap lines
 101     FALSE,              // not readonly
 102 #ifdef __WXMSW__
 103     TextKind_Plain      // plain EDIT control
 104 #endif // __WXMSW__
 105 };
 106
 107 // ----------------------------------------------------------------------------
 108 // TextWidgetsPage
 109 // ----------------------------------------------------------------------------
 110
 111 // Define a new frame type: this is going to be our main frame
 112 class TextWidgetsPage : public WidgetsPage
 113 {
 114 public:
 115     // ctor(s) and dtor
 116     TextWidgetsPage(wxNotebook *notebook, wxImageList *imaglist);
 117     virtual ~TextWidgetsPage();
 118
 119 protected:
 120     // create an info text contorl
 121     wxTextCtrl *CreateInfoText();
 122
 123     // create a horz sizer holding a static text and this text control
 124     wxSizer *CreateTextWithLabelSizer(const wxString& label,
 125                                       wxTextCtrl *text,
 126                                       const wxString& label2 = wxEmptyString,
 127                                       wxTextCtrl *text2 = NULL);
 128
 129     // event handlers
 130     void OnButtonReset(wxCommandEvent& event);
 131     void OnButtonClearLog(wxCommandEvent& event);
 132
 133     void OnButtonSet(wxCommandEvent& event);
 134     void OnButtonAdd(wxCommandEvent& event);
 135     void OnButtonInsert(wxCommandEvent& event);
 136     void OnButtonClear(wxCommandEvent& event);
 137     void OnButtonLoad(wxCommandEvent& event);
 138
 139     void OnButtonQuit(wxCommandEvent& event);
 140
 141     void OnText(wxCommandEvent& event);
 142     void OnTextEnter(wxCommandEvent& event);
 143
 144     void OnCheckOrRadioBox(wxCommandEvent& event);
 145
 146     void OnUpdateUIClearButton(wxUpdateUIEvent& event);
 147
 148     void OnUpdateUIPasswordCheckbox(wxUpdateUIEvent& event);
 149     void OnUpdateUIWrapLinesCheckbox(wxUpdateUIEvent& event);
 150
 151     void OnUpdateUIResetButton(wxUpdateUIEvent& event);
 152
 153     void OnIdle(wxIdleEvent& event);
 154
 155     // reset the textctrl parameters
 156     void Reset();
 157
 158     // (re)create the textctrl
 159     void CreateText();
 160
 161     // is the control currently single line?
 162     bool IsSingleLine() const
 163     {
 164         return m_radioTextLines->GetSelection() == TextLines_Single;
 165     }
 166
 167     // the controls
 168     // ------------
 169
 170     // the radiobox to choose between single and multi line
 171     wxRadioBox *m_radioTextLines;
 172
 173     // the checkboxes controlling text ctrl styles
 174     wxCheckBox *m_chkPassword,
 175                *m_chkWrapLines,
 176                *m_chkReadonly;
 177
 178     // under MSW we test rich edit controls as well here
 179 #ifdef __WXMSW__
 180     wxRadioBox *m_radioKind;
 181 #endif // __WXMSW__
 182
 183     // the textctrl itself and the sizer it is in
 184     wxTextCtrl *m_text;
 185     wxSizer *m_sizerText;
 186
 187     // the information text zones
 188     wxTextCtrl *m_textPosCur,
 189                *m_textRowCur,
 190                *m_textColCur,
 191                *m_textPosLast,
 192                *m_textLineLast,
 193                *m_textSelFrom,
 194                *m_textSelTo,
 195                *m_textRange;
 196
 197     // and the data to show in them
 198     long m_posCur,
 199          m_posLast,
 200          m_selFrom,
 201          m_selTo;
 202
 203     wxString m_range10_20;
 204
 205 private:
 206     // any class wishing to process wxWindows events must use this macro
 207     DECLARE_EVENT_TABLE()
 208     DECLARE_WIDGETS_PAGE(TextWidgetsPage)
 209 };
 210
 211 // ----------------------------------------------------------------------------
 212 // event tables
 213 // ----------------------------------------------------------------------------
 214
 215 BEGIN_EVENT_TABLE(TextWidgetsPage, WidgetsPage)
 216     EVT_IDLE(TextWidgetsPage::OnIdle)
 217
 218     EVT_BUTTON(TextPage_Reset, TextWidgetsPage::OnButtonReset)
 219
 220     EVT_BUTTON(TextPage_Clear, TextWidgetsPage::OnButtonClear)
 221     EVT_BUTTON(TextPage_Set, TextWidgetsPage::OnButtonSet)
 222     EVT_BUTTON(TextPage_Add, TextWidgetsPage::OnButtonAdd)
 223     EVT_BUTTON(TextPage_Insert, TextWidgetsPage::OnButtonInsert)
 224     EVT_BUTTON(TextPage_Load, TextWidgetsPage::OnButtonLoad)
 225
 226     EVT_UPDATE_UI(TextPage_Clear, TextWidgetsPage::OnUpdateUIClearButton)
 227
 228     EVT_UPDATE_UI(TextPage_Password, TextWidgetsPage::OnUpdateUIPasswordCheckbox)
 229     EVT_UPDATE_UI(TextPage_WrapLines, TextWidgetsPage::OnUpdateUIWrapLinesCheckbox)
 230
 231     EVT_UPDATE_UI(TextPage_Reset, TextWidgetsPage::OnUpdateUIResetButton)
 232
 233     EVT_TEXT(TextPage_Textctrl, TextWidgetsPage::OnText)
 234     EVT_TEXT_ENTER(TextPage_Textctrl, TextWidgetsPage::OnTextEnter)
 235
 236     EVT_CHECKBOX(-1, TextWidgetsPage::OnCheckOrRadioBox)
 237     EVT_RADIOBOX(-1, TextWidgetsPage::OnCheckOrRadioBox)
 238 END_EVENT_TABLE()
 239
 240 // ============================================================================
 241 // implementation
 242 // ============================================================================
 243
 244 IMPLEMENT_WIDGETS_PAGE(TextWidgetsPage, _T("Text"));
 245
 246 // ----------------------------------------------------------------------------
 247 // TextWidgetsPage creation
 248 // ----------------------------------------------------------------------------
 249
 250 TextWidgetsPage::TextWidgetsPage(wxNotebook *notebook, wxImageList *imaglist)
 251                : WidgetsPage(notebook)
 252 {
 253     imaglist->Add(wxBitmap(text_xpm));
 254
 255     // init everything
 256 #ifdef __WXMSW__
 257     m_radioKind =
 258 #endif // __WXMSW__
 259     m_radioTextLines = (wxRadioBox *)NULL;
 260
 261     m_chkPassword =
 262     m_chkWrapLines =
 263     m_chkReadonly = (wxCheckBox *)NULL;
 264
 265     m_text =
 266     m_textPosCur =
 267     m_textRowCur =
 268     m_textColCur =
 269     m_textPosLast =
 270     m_textLineLast =
 271     m_textSelFrom =
 272     m_textSelTo =
 273     m_textRange = (wxTextCtrl *)NULL;
 274
 275     m_sizerText = (wxSizer *)NULL;
 276
 277     m_posCur =
 278     m_posLast =
 279     m_selFrom =
 280     m_selTo = -2; // not -1 which means "no selection"
 281
 282     // left pane
 283     static const wxString modes[] =
 284     {
 285         _T("single line"),
 286         _T("multi line"),
 287     };
 288
 289     wxStaticBox *box = new wxStaticBox(this, -1, _T("&Set textctrl parameters"));
 290     m_radioTextLines = new wxRadioBox(this, -1, _T("&Number of lines:"),
 291                                       wxDefaultPosition, wxDefaultSize,
 292                                       WXSIZEOF(modes), modes,
 293                                       1, wxRA_SPECIFY_COLS);
 294
 295     wxSizer *sizerLeft = new wxStaticBoxSizer(box, wxVERTICAL);
 296
 297     sizerLeft->Add(m_radioTextLines, 0, wxGROW | wxALL, 5);
 298     sizerLeft->Add(5, 5, 0, wxGROW | wxALL, 5); // spacer
 299
 300     m_chkPassword = CreateCheckBoxAndAddToSizer(
 301                         sizerLeft, _T("&Password control"), TextPage_Password
 302                     );
 303     m_chkWrapLines = CreateCheckBoxAndAddToSizer(
 304                         sizerLeft, _T("Line &wrap"), TextPage_WrapLines
 305                      );
 306     m_chkReadonly = CreateCheckBoxAndAddToSizer(
 307                         sizerLeft, _T("&Read-only mode")
 308                     );
 309
 310 #ifdef __WXMSW__
 311     static const wxString kinds[] =
 312     {
 313         _T("plain edit"),
 314         _T("rich edit"),
 315         _T("rich edit 2.0"),
 316     };
 317
 318     m_radioKind = new wxRadioBox(this, -1, _T("Control &kind"),
 319                                  wxDefaultPosition, wxDefaultSize,
 320                                  WXSIZEOF(kinds), kinds,
 321                                  1, wxRA_SPECIFY_COLS);
 322
 323     sizerLeft->Add(5, 5, 0, wxGROW | wxALL, 5); // spacer
 324     sizerLeft->Add(m_radioKind, 0, wxGROW | wxALL, 5);
 325 #endif // __WXMSW__
 326
 327     wxButton *btn = new wxButton(this, TextPage_Reset, _T("&Reset"));
 328     sizerLeft->Add(2, 2, 0, wxGROW | wxALL, 1); // spacer
 329     sizerLeft->Add(btn, 0, wxALIGN_CENTRE_HORIZONTAL | wxALL, 15);
 330
 331     // middle pane
 332     wxStaticBox *box2 = new wxStaticBox(this, -1, _T("&Change contents:"));
 333     wxSizer *sizerMiddleUp = new wxStaticBoxSizer(box2, wxVERTICAL);
 334
 335     btn = new wxButton(this, TextPage_Set, _T("&Set text value"));
 336     sizerMiddleUp->Add(btn, 0, wxALL | wxGROW, 1);
 337
 338     btn = new wxButton(this, TextPage_Add, _T("&Append text"));
 339     sizerMiddleUp->Add(btn, 0, wxALL | wxGROW, 1);
 340
 341     btn = new wxButton(this, TextPage_Insert, _T("&Insert text"));
 342     sizerMiddleUp->Add(btn, 0, wxALL | wxGROW, 1);
 343
 344     btn = new wxButton(this, TextPage_Load, _T("&Load file"));
 345     sizerMiddleUp->Add(btn, 0, wxALL | wxGROW, 1);
 346
 347     btn = new wxButton(this, TextPage_Clear, _T("&Clear"));
 348     sizerMiddleUp->Add(btn, 0, wxALL | wxGROW, 1);
 349
 350     wxStaticBox *box4 = new wxStaticBox(this, -1, _T("&Info:"));
 351     wxSizer *sizerMiddleDown = new wxStaticBoxSizer(box4, wxVERTICAL);
 352
 353     m_textPosCur = CreateInfoText();
 354     m_textRowCur = CreateInfoText();
 355     m_textColCur = CreateInfoText();
 356
 357     wxSizer *sizerRow = new wxBoxSizer(wxHORIZONTAL);
 358     sizerRow->Add(CreateTextWithLabelSizer
 359                   (
 360                     _T("Current pos:"),
 361                     m_textPosCur
 362                   ),
 363                   0, wxRIGHT, 5);
 364     sizerRow->Add(CreateTextWithLabelSizer
 365                   (
 366                     _T("Col:"),
 367                     m_textColCur
 368                   ),
 369                   0, wxLEFT | wxRIGHT, 5);
 370     sizerRow->Add(CreateTextWithLabelSizer
 371                   (
 372                     _T("Row:"),
 373                     m_textRowCur
 374                   ),
 375                   0, wxLEFT, 5);
 376     sizerMiddleDown->Add(sizerRow, 0, wxALL, 5);
 377
 378     m_textLineLast = CreateInfoText();
 379     m_textPosLast = CreateInfoText();
 380     sizerMiddleDown->Add
 381                      (
 382                         CreateTextWithLabelSizer
 383                         (
 384                           _T("Number of lines:"),
 385                           m_textLineLast,
 386                           _T("Last position:"),
 387                           m_textPosLast
 388                         ),
 389                         0, wxALL, 5
 390                      );
 391
 392     m_textSelFrom = CreateInfoText();
 393     m_textSelTo = CreateInfoText();
 394     sizerMiddleDown->Add
 395                      (
 396                         CreateTextWithLabelSizer
 397                         (
 398                           _T("Selection: from"),
 399                           m_textSelFrom,
 400                           _T("to"),
 401                           m_textSelTo
 402                         ),
 403                         0, wxALL, 5
 404                      );
 405
 406     m_textRange = new wxTextCtrl(this, -1, _T(""),
 407                                  wxDefaultPosition, wxDefaultSize,
 408                                  wxTE_READONLY);
 409     sizerMiddleDown->Add
 410                      (
 411                         CreateTextWithLabelSizer
 412                         (
 413                           _T("Range 10..20:"),
 414                           m_textRange
 415                         ),
 416                         0, wxALL, 5
 417                      );
 418
 419     wxSizer *sizerMiddle = new wxBoxSizer(wxVERTICAL);
 420     sizerMiddle->Add(sizerMiddleUp, 0, wxGROW);
 421     sizerMiddle->Add(sizerMiddleDown, 1, wxGROW | wxTOP, 5);
 422
 423     // right pane
 424     wxStaticBox *box3 = new wxStaticBox(this, -1, _T("&Text:"));
 425     m_sizerText = new wxStaticBoxSizer(box3, wxHORIZONTAL);
 426     Reset();
 427     CreateText();
 428     m_sizerText->SetMinSize(150, 0);
 429
 430     // the 3 panes panes compose the upper part of the window
 431     wxSizer *sizerTop = new wxBoxSizer(wxHORIZONTAL);
 432     sizerTop->Add(sizerLeft, 0, wxGROW | (wxALL & ~wxLEFT), 10);
 433     sizerTop->Add(sizerMiddle, 0, wxGROW | wxALL, 10);
 434     sizerTop->Add(m_sizerText, 1, wxGROW | (wxALL & ~wxRIGHT), 10);
 435
 436     SetAutoLayout(TRUE);
 437     SetSizer(sizerTop);
 438
 439     sizerTop->Fit(this);
 440 }
 441
 442 TextWidgetsPage::~TextWidgetsPage()
 443 {
 444 }
 445
 446 // ----------------------------------------------------------------------------
 447 // creation helpers
 448 // ----------------------------------------------------------------------------
 449
 450 wxTextCtrl *TextWidgetsPage::CreateInfoText()
 451 {
 452     static int s_maxWidth = 0;
 453     if ( !s_maxWidth )
 454     {
 455         // calc it once only
 456         GetTextExtent(_T("9999999"), &s_maxWidth, NULL);
 457     }
 458
 459     wxTextCtrl *text = new wxTextCtrl(this, -1, _T(""),
 460                                       wxDefaultPosition,
 461                                       wxSize(s_maxWidth, -1),
 462                                       wxTE_READONLY);
 463     return text;
 464 }
 465
 466 wxSizer *TextWidgetsPage::CreateTextWithLabelSizer(const wxString& label,
 467                                                  wxTextCtrl *text,
 468                                                  const wxString& label2,
 469                                                  wxTextCtrl *text2)
 470 {
 471     wxSizer *sizerRow = new wxBoxSizer(wxHORIZONTAL);
 472     sizerRow->Add(new wxStaticText(this, -1, label), 0,
 473                   wxALIGN_CENTRE_VERTICAL | wxRIGHT, 5);
 474     sizerRow->Add(text, 0, wxALIGN_CENTRE_VERTICAL);
 475     if ( text2 )
 476     {
 477         sizerRow->Add(new wxStaticText(this, -1, label2), 0,
 478                       wxALIGN_CENTRE_VERTICAL | wxLEFT | wxRIGHT, 5);
 479         sizerRow->Add(text2, 0, wxALIGN_CENTRE_VERTICAL);
 480     }
 481
 482     return sizerRow;
 483 }
 484
 485 // ----------------------------------------------------------------------------
 486 // operations
 487 // ----------------------------------------------------------------------------
 488
 489 void TextWidgetsPage::Reset()
 490 {
 491     m_radioTextLines->SetSelection(DEFAULTS.textLines);
 492     m_chkPassword->SetValue(DEFAULTS.password);
 493     m_chkWrapLines->SetValue(DEFAULTS.wraplines);
 494     m_chkReadonly->SetValue(DEFAULTS.readonly);
 495 #ifdef __WXMSW__
 496     m_radioKind->SetSelection(DEFAULTS.textKind);
 497 #endif // __WXMSW__
 498 }
 499
 500 void TextWidgetsPage::CreateText()
 501 {
 502     int flags = 0;
 503     switch ( m_radioTextLines->GetSelection() )
 504     {
 505         default:
 506             wxFAIL_MSG( _T("unexpected lines radio box selection") );
 507
 508         case TextLines_Single:
 509             break;
 510
 511         case TextLines_Multi:
 512             flags |= wxTE_MULTILINE;
 513             m_chkPassword->SetValue(FALSE);
 514             break;
 515     }
 516
 517     if ( m_chkPassword->GetValue() )
 518         flags |= wxTE_PASSWORD;
 519     if ( m_chkReadonly->GetValue() )
 520         flags |= wxTE_READONLY;
 521     if ( !m_chkWrapLines->GetValue() )
 522         flags |= wxHSCROLL;
 523
 524 #ifdef __WXMSW__
 525     switch ( m_radioKind->GetSelection() )
 526     {
 527         default:
 528             wxFAIL_MSG( _T("unexpected kind radio box selection") );
 529
 530         case TextKind_Plain:
 531             break;
 532
 533         case TextKind_Rich:
 534             flags |= wxTE_RICH;
 535             break;
 536
 537         case TextKind_Rich2:
 538             flags |= wxTE_RICH2;
 539             break;
 540     }
 541 #endif // __WXMSW__
 542
 543     wxString valueOld;
 544     if ( m_text )
 545     {
 546         valueOld = m_text->GetValue();
 547
 548         m_sizerText->Detach( m_text );
 549         delete m_text;
 550     }
 551     else
 552     {
 553         valueOld = _T("Hello, Universe!");
 554     }
 555
 556     m_text = new wxTextCtrl(this, TextPage_Textctrl,
 557                             valueOld,
 558                             wxDefaultPosition, wxDefaultSize,
 559                             flags);
 560
 561     // cast to int needed to silence gcc warning about different enums
 562     m_sizerText->Add(m_text, 1, wxALL |
 563                      (flags & wxTE_MULTILINE ? (int)wxGROW
 564                                              : wxALIGN_TOP), 5);
 565     m_sizerText->Layout();
 566 }
 567
 568 // ----------------------------------------------------------------------------
 569 // event handlers
 570 // ----------------------------------------------------------------------------
 571
 572 void TextWidgetsPage::OnIdle(wxIdleEvent& WXUNUSED(event))
 573 {
 574     // update all info texts
 575
 576     if ( m_textPosCur )
 577     {
 578         long posCur = m_text->GetInsertionPoint();
 579         if ( posCur != m_posCur )
 580         {
 581             m_textPosCur->Clear();
 582             m_textRowCur->Clear();
 583             m_textColCur->Clear();
 584
 585             long col, row;
 586             m_text->PositionToXY(posCur, &col, &row);
 587
 588             *m_textPosCur << posCur;
 589             *m_textRowCur << row;
 590             *m_textColCur << col;
 591
 592             m_posCur = posCur;
 593         }
 594     }
 595
 596     if ( m_textPosLast )
 597     {
 598         long posLast = m_text->GetLastPosition();
 599         if ( posLast != m_posLast )
 600         {
 601             m_textPosLast->Clear();
 602             *m_textPosLast << posLast;
 603
 604             m_posLast = posLast;
 605         }
 606     }
 607
 608     if ( m_textLineLast )
 609     {
 610         m_textLineLast->SetValue(
 611                 wxString::Format(_T("%d"), m_text->GetNumberOfLines()) );
 612     }
 613
 614     if ( m_textSelFrom && m_textSelTo )
 615     {
 616         long selFrom, selTo;
 617         m_text->GetSelection(&selFrom, &selTo);
 618         if ( selFrom != m_selFrom )
 619         {
 620             m_textSelFrom->Clear();
 621             *m_textSelFrom << selFrom;
 622
 623             m_selFrom = selFrom;
 624         }
 625
 626         if ( selTo != m_selTo )
 627         {
 628             m_textSelTo->Clear();
 629             *m_textSelTo << selTo;
 630
 631             m_selTo = selTo;
 632         }
 633     }
 634
 635     if ( m_textRange )
 636     {
 637         wxString range = m_text->GetRange(10, 20);
 638         if ( range != m_range10_20 )
 639         {
 640             m_range10_20 = range;
 641             m_textRange->SetValue(range);
 642         }
 643     }
 644 }
 645
 646 void TextWidgetsPage::OnButtonReset(wxCommandEvent& WXUNUSED(event))
 647 {
 648     Reset();
 649
 650     CreateText();
 651 }
 652
 653 void TextWidgetsPage::OnButtonSet(wxCommandEvent& WXUNUSED(event))
 654 {
 655     m_text->SetValue(m_text->GetWindowStyle() & wxTE_MULTILINE
 656                         ? _T("Here,\nthere and\neverywhere")
 657                         : _T("Yellow submarine"));
 658
 659     m_text->SetFocus();
 660 }
 661
 662 void TextWidgetsPage::OnButtonAdd(wxCommandEvent& WXUNUSED(event))
 663 {
 664     if ( m_text->GetWindowStyle() & wxTE_MULTILINE )
 665     {
 666         m_text->AppendText(_T("We all live in a\n"));
 667     }
 668
 669     m_text->AppendText(_T("Yellow submarine"));
 670 }
 671
 672 void TextWidgetsPage::OnButtonInsert(wxCommandEvent& WXUNUSED(event))
 673 {
 674     m_text->WriteText(_T("Is there anybody going to listen to my story"));
 675     if ( m_text->GetWindowStyle() & wxTE_MULTILINE )
 676     {
 677         m_text->WriteText(_T("\nall about the girl who came to stay"));
 678     }
 679 }
 680
 681 void TextWidgetsPage::OnButtonClear(wxCommandEvent& WXUNUSED(event))
 682 {
 683     m_text->Clear();
 684     m_text->SetFocus();
 685 }
 686
 687 void TextWidgetsPage::OnButtonLoad(wxCommandEvent& WXUNUSED(event))
 688 {
 689     // search for the file in several dirs where it's likely to be
 690     wxPathList pathlist;
 691     pathlist.Add(_T("."));
 692     pathlist.Add(_T(".."));
 693     pathlist.Add(_T("../../../samples/widgets"));
 694
 695     wxString filename = pathlist.FindValidPath(_T("textctrl.cpp"));
 696     if ( !filename )
 697     {
 698         wxLogError(_T("File textctrl.cpp not found."));
 699     }
 700     else // load it
 701     {
 702         wxStopWatch sw;
 703         if ( !m_text->LoadFile(filename) )
 704         {
 705             // this is not supposed to happen ...
 706             wxLogError(_T("Error loading file."));
 707         }
 708         else
 709         {
 710             long elapsed = sw.Time();
 711             wxLogMessage(_T("Loaded file '%s' in %lu.%us"),
 712                          filename.c_str(), elapsed / 1000,
 713                          (unsigned int) elapsed % 1000);
 714         }
 715     }
 716 }
 717
 718 void TextWidgetsPage::OnUpdateUIClearButton(wxUpdateUIEvent& event)
 719 {
 720     event.Enable(!m_text->GetValue().empty());
 721 }
 722
 723 void TextWidgetsPage::OnUpdateUIWrapLinesCheckbox(wxUpdateUIEvent& event)
 724 {
 725     event.Enable( !IsSingleLine() );
 726 }
 727
 728 void TextWidgetsPage::OnUpdateUIPasswordCheckbox(wxUpdateUIEvent& event)
 729 {
 730     // can't put multiline control in password mode
 731     event.Enable( IsSingleLine() );
 732 }
 733
 734 void TextWidgetsPage::OnUpdateUIResetButton(wxUpdateUIEvent& event)
 735 {
 736     event.Enable( (m_radioTextLines->GetSelection() != DEFAULTS.textLines) ||
 737 #ifdef __WXMSW__
 738                   (m_radioKind->GetSelection() != DEFAULTS.textKind) ||
 739 #endif // __WXMSW__
 740                   (m_chkReadonly->GetValue() != DEFAULTS.readonly) ||
 741                   (m_chkPassword->GetValue() != DEFAULTS.password) ||
 742                   (m_chkWrapLines->GetValue() != DEFAULTS.wraplines) );
 743 }
 744
 745 void TextWidgetsPage::OnText(wxCommandEvent& WXUNUSED(event))
 746 {
 747     // small hack to suppress the very first message: by then the logging is
 748     // not yet redirected and so initial setting of the text value results in
 749     // an annoying message box
 750     static bool s_firstTime = TRUE;
 751     if ( s_firstTime )
 752     {
 753         s_firstTime = FALSE;
 754         return;
 755     }
 756
 757     wxLogMessage(_T("Text ctrl value changed"));
 758 }
 759
 760 void TextWidgetsPage::OnTextEnter(wxCommandEvent& event)
 761 {
 762     wxLogMessage(_T("Text entered: '%s'"), event.GetString().c_str());
 763 }
 764
 765 void TextWidgetsPage::OnCheckOrRadioBox(wxCommandEvent& WXUNUSED(event))
 766 {
 767     CreateText();
 768 }
 769