samples/widgets/textctrl.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Program:     wxWidgets 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     #include "wx/msgdlg.h"
  40 #endif
  41
  42 #include "wx/sizer.h"
  43 #include "wx/ioswrap.h"
  44
  45 #include "widgets.h"
  46
  47 #include "icons/text.xpm"
  48
  49 // ----------------------------------------------------------------------------
  50 // constants
  51 // ----------------------------------------------------------------------------
  52
  53 // control ids
  54 enum
  55 {
  56     TextPage_Reset = 100,
  57
  58     TextPage_Set,
  59     TextPage_Add,
  60     TextPage_Insert,
  61     TextPage_Clear,
  62     TextPage_Load,
  63
  64     TextPage_StreamRedirector,
  65
  66     TextPage_Password,
  67     TextPage_WrapLines,
  68     TextPage_Textctrl
  69 };
  70
  71 // textctrl line number radiobox values
  72 enum TextLines
  73 {
  74     TextLines_Single,
  75     TextLines_Multi,
  76     TextLines_Max
  77 };
  78
  79 // wrap style radio box
  80 enum WrapStyle
  81 {
  82     WrapStyle_None,
  83     WrapStyle_Word,
  84     WrapStyle_Char,
  85     WrapStyle_Best,
  86     WrapStyle_Max
  87 };
  88
  89 #ifdef __WXMSW__
  90
  91 // textctrl kind values
  92 enum TextKind
  93 {
  94     TextKind_Plain,
  95     TextKind_Rich,
  96     TextKind_Rich2,
  97     TextKind_Max
  98 };
  99
 100 #endif // __WXMSW__
 101
 102 // default values for the controls
 103 static const struct ControlValues
 104 {
 105     TextLines textLines;
 106
 107     bool password;
 108     bool readonly;
 109
 110     WrapStyle wrapStyle;
 111
 112 #ifdef __WXMSW__
 113     TextKind textKind;
 114 #endif // __WXMSW__
 115 } DEFAULTS =
 116 {
 117     TextLines_Multi,    // multiline
 118     false,              // not password
 119     false,              // not readonly
 120     WrapStyle_Word,     // wrap on word boundaries
 121 #ifdef __WXMSW__
 122     TextKind_Plain      // plain EDIT control
 123 #endif // __WXMSW__
 124 };
 125
 126 // ----------------------------------------------------------------------------
 127 // TextWidgetsPage
 128 // ----------------------------------------------------------------------------
 129
 130 // Define a new frame type: this is going to be our main frame
 131 class TextWidgetsPage : public WidgetsPage
 132 {
 133 public:
 134     // ctor(s) and dtor
 135     TextWidgetsPage(WidgetsBookCtrl *book, wxImageList *imaglist);
 136     virtual ~TextWidgetsPage(){};
 137
 138     virtual wxControl *GetWidget() const { return m_text; }
 139     virtual void RecreateWidget() { CreateText(); }
 140
 141 protected:
 142     // create an info text contorl
 143     wxTextCtrl *CreateInfoText();
 144
 145     // create a horz sizer holding a static text and this text control
 146     wxSizer *CreateTextWithLabelSizer(const wxString& label,
 147                                       wxTextCtrl *text,
 148                                       const wxString& label2 = wxEmptyString,
 149                                       wxTextCtrl *text2 = NULL);
 150
 151     // event handlers
 152     void OnButtonReset(wxCommandEvent& event);
 153     void OnButtonClearLog(wxCommandEvent& event);
 154
 155     void OnButtonSet(wxCommandEvent& event);
 156     void OnButtonAdd(wxCommandEvent& event);
 157     void OnButtonInsert(wxCommandEvent& event);
 158     void OnButtonClear(wxCommandEvent& event);
 159     void OnButtonLoad(wxCommandEvent& event);
 160
 161     void OnStreamRedirector(wxCommandEvent& event);
 162     void OnButtonQuit(wxCommandEvent& event);
 163
 164     void OnText(wxCommandEvent& event);
 165     void OnTextEnter(wxCommandEvent& event);
 166
 167     void OnCheckOrRadioBox(wxCommandEvent& event);
 168
 169     void OnUpdateUIClearButton(wxUpdateUIEvent& event);
 170
 171     void OnUpdateUIPasswordCheckbox(wxUpdateUIEvent& event);
 172     void OnUpdateUIWrapLinesCheckbox(wxUpdateUIEvent& event);
 173
 174     void OnUpdateUIResetButton(wxUpdateUIEvent& event);
 175
 176     void OnIdle(wxIdleEvent& event);
 177
 178     // reset the textctrl parameters
 179     void Reset();
 180
 181     // (re)create the textctrl
 182     void CreateText();
 183
 184     // is the control currently single line?
 185     bool IsSingleLine() const
 186     {
 187         return m_radioTextLines->GetSelection() == TextLines_Single;
 188     }
 189
 190     // the controls
 191     // ------------
 192
 193     // the radiobox to choose between single and multi line
 194     wxRadioBox *m_radioTextLines;
 195
 196     // and another one to choose the wrapping style
 197     wxRadioBox *m_radioWrap;
 198
 199     // the checkboxes controlling text ctrl styles
 200     wxCheckBox *m_chkPassword,
 201                *m_chkReadonly;
 202
 203     // under MSW we test rich edit controls as well here
 204 #ifdef __WXMSW__
 205     wxRadioBox *m_radioKind;
 206 #endif // __WXMSW__
 207
 208     // the textctrl itself and the sizer it is in
 209     wxTextCtrl *m_text;
 210     wxSizer *m_sizerText;
 211
 212     // the information text zones
 213     wxTextCtrl *m_textPosCur,
 214                *m_textRowCur,
 215                *m_textColCur,
 216                *m_textPosLast,
 217                *m_textLineLast,
 218                *m_textSelFrom,
 219                *m_textSelTo,
 220                *m_textRange;
 221
 222     // and the data to show in them
 223     long m_posCur,
 224          m_posLast,
 225          m_selFrom,
 226          m_selTo;
 227
 228     wxString m_range10_20;
 229
 230 private:
 231     // any class wishing to process wxWidgets events must use this macro
 232     DECLARE_EVENT_TABLE()
 233     DECLARE_WIDGETS_PAGE(TextWidgetsPage)
 234 };
 235
 236 // ----------------------------------------------------------------------------
 237 // WidgetsTextCtrl
 238 // ----------------------------------------------------------------------------
 239
 240 class WidgetsTextCtrl : public wxTextCtrl
 241 {
 242 public:
 243     WidgetsTextCtrl(wxWindow *parent,
 244                     wxWindowID id,
 245                     const wxString& value,
 246                     int flags)
 247         : wxTextCtrl(parent, id, value, wxDefaultPosition, wxDefaultSize, flags)
 248     {
 249     }
 250
 251 protected:
 252     void OnRightClick(wxMouseEvent& event)
 253     {
 254         wxString where;
 255         wxTextCoord x, y;
 256         switch ( HitTest(event.GetPosition(), &x, &y) )
 257         {
 258             default:
 259                 wxFAIL_MSG( _T("unexpected HitTest() result") );
 260                 // fall through
 261
 262             case wxTE_HT_UNKNOWN:
 263                 x = y = -1;
 264                 where = _T("nowhere near");
 265                 break;
 266
 267             case wxTE_HT_BEFORE:
 268                 where = _T("before");
 269                 break;
 270
 271             case wxTE_HT_BELOW:
 272                 where = _T("below");
 273                 break;
 274
 275             case wxTE_HT_BEYOND:
 276                 where = _T("beyond");
 277                 break;
 278
 279             case wxTE_HT_ON_TEXT:
 280                 where = _T("at");
 281                 break;
 282         }
 283
 284         wxLogMessage(_T("Mouse is %s (%ld, %ld)"), where.c_str(), x, y);
 285
 286         event.Skip();
 287     }
 288
 289 private:
 290     DECLARE_EVENT_TABLE()
 291 };
 292
 293 // ----------------------------------------------------------------------------
 294 // event tables
 295 // ----------------------------------------------------------------------------
 296
 297 BEGIN_EVENT_TABLE(TextWidgetsPage, WidgetsPage)
 298     EVT_IDLE(TextWidgetsPage::OnIdle)
 299
 300     EVT_BUTTON(TextPage_Reset, TextWidgetsPage::OnButtonReset)
 301
 302     EVT_BUTTON(TextPage_StreamRedirector, TextWidgetsPage::OnStreamRedirector)
 303
 304     EVT_BUTTON(TextPage_Clear, TextWidgetsPage::OnButtonClear)
 305     EVT_BUTTON(TextPage_Set, TextWidgetsPage::OnButtonSet)
 306     EVT_BUTTON(TextPage_Add, TextWidgetsPage::OnButtonAdd)
 307     EVT_BUTTON(TextPage_Insert, TextWidgetsPage::OnButtonInsert)
 308     EVT_BUTTON(TextPage_Load, TextWidgetsPage::OnButtonLoad)
 309
 310     EVT_UPDATE_UI(TextPage_Clear, TextWidgetsPage::OnUpdateUIClearButton)
 311
 312     EVT_UPDATE_UI(TextPage_Password, TextWidgetsPage::OnUpdateUIPasswordCheckbox)
 313     EVT_UPDATE_UI(TextPage_WrapLines, TextWidgetsPage::OnUpdateUIWrapLinesCheckbox)
 314
 315     EVT_UPDATE_UI(TextPage_Reset, TextWidgetsPage::OnUpdateUIResetButton)
 316
 317     EVT_TEXT(TextPage_Textctrl, TextWidgetsPage::OnText)
 318     EVT_TEXT_ENTER(TextPage_Textctrl, TextWidgetsPage::OnTextEnter)
 319
 320     EVT_CHECKBOX(wxID_ANY, TextWidgetsPage::OnCheckOrRadioBox)
 321     EVT_RADIOBOX(wxID_ANY, TextWidgetsPage::OnCheckOrRadioBox)
 322 END_EVENT_TABLE()
 323
 324 BEGIN_EVENT_TABLE(WidgetsTextCtrl, wxTextCtrl)
 325     EVT_RIGHT_UP(WidgetsTextCtrl::OnRightClick)
 326 END_EVENT_TABLE()
 327
 328 // ============================================================================
 329 // implementation
 330 // ============================================================================
 331
 332 IMPLEMENT_WIDGETS_PAGE(TextWidgetsPage, _T("Text"),
 333                        (int)wxPlatform(GENERIC_CTRLS).If(wxMSW,NATIVE_CTRLS)
 334                        | EDITABLE_CTRLS
 335                        );
 336
 337 // ----------------------------------------------------------------------------
 338 // TextWidgetsPage creation
 339 // ----------------------------------------------------------------------------
 340
 341 TextWidgetsPage::TextWidgetsPage(WidgetsBookCtrl *book, wxImageList *imaglist)
 342                : WidgetsPage(book)
 343 {
 344     imaglist->Add(wxBitmap(text_xpm));
 345
 346     // init everything
 347 #ifdef __WXMSW__
 348     m_radioKind =
 349 #endif // __WXMSW__
 350     m_radioWrap =
 351     m_radioTextLines = (wxRadioBox *)NULL;
 352
 353     m_chkPassword =
 354     m_chkReadonly = (wxCheckBox *)NULL;
 355
 356     m_text =
 357     m_textPosCur =
 358     m_textRowCur =
 359     m_textColCur =
 360     m_textPosLast =
 361     m_textLineLast =
 362     m_textSelFrom =
 363     m_textSelTo =
 364     m_textRange = (wxTextCtrl *)NULL;
 365
 366     m_sizerText = (wxSizer *)NULL;
 367
 368     m_posCur =
 369     m_posLast =
 370     m_selFrom =
 371     m_selTo = -2; // not -1 which means "no selection"
 372
 373     // left pane
 374     static const wxString modes[] =
 375     {
 376         _T("single line"),
 377         _T("multi line"),
 378     };
 379
 380     wxStaticBox *box = new wxStaticBox(this, wxID_ANY, _T("&Set textctrl parameters"));
 381     m_radioTextLines = new wxRadioBox(this, wxID_ANY, _T("&Number of lines:"),
 382                                       wxDefaultPosition, wxDefaultSize,
 383                                       WXSIZEOF(modes), modes,
 384                                       1, wxRA_SPECIFY_COLS);
 385
 386     wxSizer *sizerLeft = new wxStaticBoxSizer(box, wxVERTICAL);
 387
 388     sizerLeft->Add(m_radioTextLines, 0, wxGROW | wxALL, 5);
 389     sizerLeft->AddSpacer(5);
 390
 391     m_chkPassword = CreateCheckBoxAndAddToSizer(
 392                         sizerLeft, _T("&Password control"), TextPage_Password
 393                     );
 394     m_chkReadonly = CreateCheckBoxAndAddToSizer(
 395                         sizerLeft, _T("&Read-only mode")
 396                     );
 397     sizerLeft->AddSpacer(5);
 398
 399     static const wxString wrap[] =
 400     {
 401         _T("no wrap"),
 402         _T("word wrap"),
 403         _T("char wrap"),
 404         _T("best wrap"),
 405     };
 406
 407     m_radioWrap = new wxRadioBox(this, wxID_ANY, _T("&Wrap style:"),
 408                                  wxDefaultPosition, wxDefaultSize,
 409                                  WXSIZEOF(wrap), wrap,
 410                                  1, wxRA_SPECIFY_COLS);
 411     sizerLeft->Add(m_radioWrap, 0, wxGROW | wxALL, 5);
 412
 413 #ifdef __WXMSW__
 414     static const wxString kinds[] =
 415     {
 416         _T("plain edit"),
 417         _T("rich edit"),
 418         _T("rich edit 2.0"),
 419     };
 420
 421     m_radioKind = new wxRadioBox(this, wxID_ANY, _T("Control &kind"),
 422                                  wxDefaultPosition, wxDefaultSize,
 423                                  WXSIZEOF(kinds), kinds,
 424                                  1, wxRA_SPECIFY_COLS);
 425
 426     sizerLeft->AddSpacer(5);
 427     sizerLeft->Add(m_radioKind, 0, wxGROW | wxALL, 5);
 428 #endif // __WXMSW__
 429
 430     wxButton *btn = new wxButton(this, TextPage_Reset, _T("&Reset"));
 431     sizerLeft->Add(2, 2, 0, wxGROW | wxALL, 1); // spacer
 432     sizerLeft->Add(btn, 0, wxALIGN_CENTRE_HORIZONTAL | wxALL, 15);
 433
 434     // middle pane
 435     wxStaticBox *box2 = new wxStaticBox(this, wxID_ANY, _T("&Change contents:"));
 436     wxSizer *sizerMiddleUp = new wxStaticBoxSizer(box2, wxVERTICAL);
 437
 438     btn = new wxButton(this, TextPage_Set, _T("&Set text value"));
 439     sizerMiddleUp->Add(btn, 0, wxALL | wxGROW, 1);
 440
 441     btn = new wxButton(this, TextPage_Add, _T("&Append text"));
 442     sizerMiddleUp->Add(btn, 0, wxALL | wxGROW, 1);
 443
 444     btn = new wxButton(this, TextPage_Insert, _T("&Insert text"));
 445     sizerMiddleUp->Add(btn, 0, wxALL | wxGROW, 1);
 446
 447     btn = new wxButton(this, TextPage_Load, _T("&Load file"));
 448     sizerMiddleUp->Add(btn, 0, wxALL | wxGROW, 1);
 449
 450     btn = new wxButton(this, TextPage_Clear, _T("&Clear"));
 451     sizerMiddleUp->Add(btn, 0, wxALL | wxGROW, 1);
 452
 453     btn = new wxButton(this, TextPage_StreamRedirector, _T("St&ream redirection"));
 454     sizerMiddleUp->Add(btn, 0, wxALL | wxGROW, 1);
 455
 456     wxStaticBox *box4 = new wxStaticBox(this, wxID_ANY, _T("&Info:"));
 457     wxSizer *sizerMiddleDown = new wxStaticBoxSizer(box4, wxVERTICAL);
 458
 459     m_textPosCur = CreateInfoText();
 460     m_textRowCur = CreateInfoText();
 461     m_textColCur = CreateInfoText();
 462
 463     wxSizer *sizerRow = new wxBoxSizer(wxHORIZONTAL);
 464     sizerRow->Add(CreateTextWithLabelSizer
 465                   (
 466                     _T("Current pos:"),
 467                     m_textPosCur
 468                   ),
 469                   0, wxRIGHT, 5);
 470     sizerRow->Add(CreateTextWithLabelSizer
 471                   (
 472                     _T("Col:"),
 473                     m_textColCur
 474                   ),
 475                   0, wxLEFT | wxRIGHT, 5);
 476     sizerRow->Add(CreateTextWithLabelSizer
 477                   (
 478                     _T("Row:"),
 479                     m_textRowCur
 480                   ),
 481                   0, wxLEFT, 5);
 482     sizerMiddleDown->Add(sizerRow, 0, wxALL, 5);
 483
 484     m_textLineLast = CreateInfoText();
 485     m_textPosLast = CreateInfoText();
 486     sizerMiddleDown->Add
 487                      (
 488                         CreateTextWithLabelSizer
 489                         (
 490                           _T("Number of lines:"),
 491                           m_textLineLast,
 492                           _T("Last position:"),
 493                           m_textPosLast
 494                         ),
 495                         0, wxALL, 5
 496                      );
 497
 498     m_textSelFrom = CreateInfoText();
 499     m_textSelTo = CreateInfoText();
 500     sizerMiddleDown->Add
 501                      (
 502                         CreateTextWithLabelSizer
 503                         (
 504                           _T("Selection: from"),
 505                           m_textSelFrom,
 506                           _T("to"),
 507                           m_textSelTo
 508                         ),
 509                         0, wxALL, 5
 510                      );
 511
 512     m_textRange = new wxTextCtrl(this, wxID_ANY, wxEmptyString,
 513                                  wxDefaultPosition, wxDefaultSize,
 514                                  wxTE_READONLY);
 515     sizerMiddleDown->Add
 516                      (
 517                         CreateTextWithLabelSizer
 518                         (
 519                           _T("Range 10..20:"),
 520                           m_textRange
 521                         ),
 522                         0, wxALL, 5
 523                      );
 524
 525     wxSizer *sizerMiddle = new wxBoxSizer(wxVERTICAL);
 526     sizerMiddle->Add(sizerMiddleUp, 0, wxGROW);
 527     sizerMiddle->Add(sizerMiddleDown, 1, wxGROW | wxTOP, 5);
 528
 529     // right pane
 530     wxStaticBox *box3 = new wxStaticBox(this, wxID_ANY, _T("&Text:"));
 531     m_sizerText = new wxStaticBoxSizer(box3, wxHORIZONTAL);
 532     Reset();
 533     CreateText();
 534     m_sizerText->SetMinSize(150, 0);
 535
 536     // the 3 panes panes compose the upper part of the window
 537     wxSizer *sizerTop = new wxBoxSizer(wxHORIZONTAL);
 538     sizerTop->Add(sizerLeft, 0, wxGROW | (wxALL & ~wxLEFT), 10);
 539     sizerTop->Add(sizerMiddle, 0, wxGROW | wxALL, 10);
 540     sizerTop->Add(m_sizerText, 1, wxGROW | (wxALL & ~wxRIGHT), 10);
 541
 542     SetSizer(sizerTop);
 543
 544     sizerTop->Fit(this);
 545 }
 546
 547 // ----------------------------------------------------------------------------
 548 // creation helpers
 549 // ----------------------------------------------------------------------------
 550
 551 wxTextCtrl *TextWidgetsPage::CreateInfoText()
 552 {
 553     static int s_maxWidth = 0;
 554     if ( !s_maxWidth )
 555     {
 556         // calc it once only
 557         GetTextExtent(_T("9999999"), &s_maxWidth, NULL);
 558     }
 559
 560     wxTextCtrl *text = new wxTextCtrl(this, wxID_ANY, wxEmptyString,
 561                                       wxDefaultPosition,
 562                                       wxSize(s_maxWidth, wxDefaultCoord),
 563                                       wxTE_READONLY);
 564     return text;
 565 }
 566
 567 wxSizer *TextWidgetsPage::CreateTextWithLabelSizer(const wxString& label,
 568                                                  wxTextCtrl *text,
 569                                                  const wxString& label2,
 570                                                  wxTextCtrl *text2)
 571 {
 572     wxSizer *sizerRow = new wxBoxSizer(wxHORIZONTAL);
 573     sizerRow->Add(new wxStaticText(this, wxID_ANY, label), 0,
 574                   wxALIGN_CENTRE_VERTICAL | wxRIGHT, 5);
 575     sizerRow->Add(text, 0, wxALIGN_CENTRE_VERTICAL);
 576     if ( text2 )
 577     {
 578         sizerRow->Add(new wxStaticText(this, wxID_ANY, label2), 0,
 579                       wxALIGN_CENTRE_VERTICAL | wxLEFT | wxRIGHT, 5);
 580         sizerRow->Add(text2, 0, wxALIGN_CENTRE_VERTICAL);
 581     }
 582
 583     return sizerRow;
 584 }
 585
 586 // ----------------------------------------------------------------------------
 587 // operations
 588 // ----------------------------------------------------------------------------
 589
 590 void TextWidgetsPage::Reset()
 591 {
 592     m_radioTextLines->SetSelection(DEFAULTS.textLines);
 593
 594     m_chkPassword->SetValue(DEFAULTS.password);
 595     m_chkReadonly->SetValue(DEFAULTS.readonly);
 596
 597     m_radioWrap->SetSelection(DEFAULTS.wrapStyle);
 598
 599 #ifdef __WXMSW__
 600     m_radioKind->SetSelection(DEFAULTS.textKind);
 601 #endif // __WXMSW__
 602 }
 603
 604 void TextWidgetsPage::CreateText()
 605 {
 606     int flags = ms_defaultFlags;
 607     switch ( m_radioTextLines->GetSelection() )
 608     {
 609         default:
 610             wxFAIL_MSG( _T("unexpected lines radio box selection") );
 611
 612         case TextLines_Single:
 613             break;
 614
 615         case TextLines_Multi:
 616             flags |= wxTE_MULTILINE;
 617             m_chkPassword->SetValue(false);
 618             break;
 619     }
 620
 621     if ( m_chkPassword->GetValue() )
 622         flags |= wxTE_PASSWORD;
 623     if ( m_chkReadonly->GetValue() )
 624         flags |= wxTE_READONLY;
 625
 626     switch ( m_radioWrap->GetSelection() )
 627     {
 628         default:
 629             wxFAIL_MSG( _T("unexpected wrap style radio box selection") );
 630
 631         case WrapStyle_None:
 632             flags |= wxTE_DONTWRAP; // same as wxHSCROLL
 633             break;
 634
 635         case WrapStyle_Word:
 636             flags |= wxTE_WORDWRAP;
 637             break;
 638
 639         case WrapStyle_Char:
 640             flags |= wxTE_CHARWRAP;
 641             break;
 642
 643         case WrapStyle_Best:
 644             // this is default but use symbolic file name for consistency
 645             flags |= wxTE_BESTWRAP;
 646             break;
 647     }
 648
 649 #ifdef __WXMSW__
 650     switch ( m_radioKind->GetSelection() )
 651     {
 652         default:
 653             wxFAIL_MSG( _T("unexpected kind radio box selection") );
 654
 655         case TextKind_Plain:
 656             break;
 657
 658         case TextKind_Rich:
 659             flags |= wxTE_RICH;
 660             break;
 661
 662         case TextKind_Rich2:
 663             flags |= wxTE_RICH2;
 664             break;
 665     }
 666 #endif // __WXMSW__
 667
 668     wxString valueOld;
 669     if ( m_text )
 670     {
 671         valueOld = m_text->GetValue();
 672
 673         m_sizerText->Detach( m_text );
 674         delete m_text;
 675     }
 676     else
 677     {
 678         valueOld = _T("Hello, Universe!");
 679     }
 680
 681     m_text = new WidgetsTextCtrl(this, TextPage_Textctrl, valueOld, flags);
 682
 683     // cast to int needed to silence gcc warning about different enums
 684     m_sizerText->Add(m_text, 1, wxALL |
 685                      (flags & wxTE_MULTILINE ? (int)wxGROW
 686                                              : wxALIGN_TOP), 5);
 687     m_sizerText->Layout();
 688 }
 689
 690 // ----------------------------------------------------------------------------
 691 // event handlers
 692 // ----------------------------------------------------------------------------
 693
 694 void TextWidgetsPage::OnIdle(wxIdleEvent& WXUNUSED(event))
 695 {
 696     // update all info texts
 697
 698     if ( m_textPosCur )
 699     {
 700         long posCur = m_text->GetInsertionPoint();
 701         if ( posCur != m_posCur )
 702         {
 703             m_textPosCur->Clear();
 704             m_textRowCur->Clear();
 705             m_textColCur->Clear();
 706
 707             long col, row;
 708             m_text->PositionToXY(posCur, &col, &row);
 709
 710             *m_textPosCur << posCur;
 711             *m_textRowCur << row;
 712             *m_textColCur << col;
 713
 714             m_posCur = posCur;
 715         }
 716     }
 717
 718     if ( m_textPosLast )
 719     {
 720         long posLast = m_text->GetLastPosition();
 721         if ( posLast != m_posLast )
 722         {
 723             m_textPosLast->Clear();
 724             *m_textPosLast << posLast;
 725
 726             m_posLast = posLast;
 727         }
 728     }
 729
 730     if ( m_textLineLast )
 731     {
 732         m_textLineLast->SetValue(
 733                 wxString::Format(_T("%d"), m_text->GetNumberOfLines()) );
 734     }
 735
 736     if ( m_textSelFrom && m_textSelTo )
 737     {
 738         long selFrom, selTo;
 739         m_text->GetSelection(&selFrom, &selTo);
 740         if ( selFrom != m_selFrom )
 741         {
 742             m_textSelFrom->Clear();
 743             *m_textSelFrom << selFrom;
 744
 745             m_selFrom = selFrom;
 746         }
 747
 748         if ( selTo != m_selTo )
 749         {
 750             m_textSelTo->Clear();
 751             *m_textSelTo << selTo;
 752
 753             m_selTo = selTo;
 754         }
 755     }
 756
 757     if ( m_textRange )
 758     {
 759         wxString range = m_text->GetRange(10, 20);
 760         if ( range != m_range10_20 )
 761         {
 762             m_range10_20 = range;
 763             m_textRange->SetValue(range);
 764         }
 765     }
 766 }
 767
 768 void TextWidgetsPage::OnButtonReset(wxCommandEvent& WXUNUSED(event))
 769 {
 770     Reset();
 771
 772     CreateText();
 773 }
 774
 775 void TextWidgetsPage::OnButtonSet(wxCommandEvent& WXUNUSED(event))
 776 {
 777     m_text->SetValue(m_text->GetWindowStyle() & wxTE_MULTILINE
 778                         ? _T("Here,\nthere and\neverywhere")
 779                         : _T("Yellow submarine"));
 780
 781     m_text->SetFocus();
 782 }
 783
 784 void TextWidgetsPage::OnButtonAdd(wxCommandEvent& WXUNUSED(event))
 785 {
 786     if ( m_text->GetWindowStyle() & wxTE_MULTILINE )
 787     {
 788         m_text->AppendText(_T("We all live in a\n"));
 789     }
 790
 791     m_text->AppendText(_T("Yellow submarine"));
 792 }
 793
 794 void TextWidgetsPage::OnButtonInsert(wxCommandEvent& WXUNUSED(event))
 795 {
 796     m_text->WriteText(_T("Is there anybody going to listen to my story"));
 797     if ( m_text->GetWindowStyle() & wxTE_MULTILINE )
 798     {
 799         m_text->WriteText(_T("\nall about the girl who came to stay"));
 800     }
 801 }
 802
 803 void TextWidgetsPage::OnButtonClear(wxCommandEvent& WXUNUSED(event))
 804 {
 805     m_text->Clear();
 806     m_text->SetFocus();
 807 }
 808
 809 void TextWidgetsPage::OnButtonLoad(wxCommandEvent& WXUNUSED(event))
 810 {
 811     // search for the file in several dirs where it's likely to be
 812     wxPathList pathlist;
 813     pathlist.Add(_T("."));
 814     pathlist.Add(_T(".."));
 815     pathlist.Add(_T("../../../samples/widgets"));
 816
 817     wxString filename = pathlist.FindValidPath(_T("textctrl.cpp"));
 818     if ( !filename )
 819     {
 820         wxLogError(_T("File textctrl.cpp not found."));
 821     }
 822     else // load it
 823     {
 824         wxStopWatch sw;
 825         if ( !m_text->LoadFile(filename) )
 826         {
 827             // this is not supposed to happen ...
 828             wxLogError(_T("Error loading file."));
 829         }
 830         else
 831         {
 832             long elapsed = sw.Time();
 833             wxLogMessage(_T("Loaded file '%s' in %lu.%us"),
 834                          filename.c_str(), elapsed / 1000,
 835                          (unsigned int) elapsed % 1000);
 836         }
 837     }
 838 }
 839
 840 void TextWidgetsPage::OnUpdateUIClearButton(wxUpdateUIEvent& event)
 841 {
 842     event.Enable(!m_text->GetValue().empty());
 843 }
 844
 845 void TextWidgetsPage::OnUpdateUIWrapLinesCheckbox(wxUpdateUIEvent& event)
 846 {
 847     event.Enable( !IsSingleLine() );
 848 }
 849
 850 void TextWidgetsPage::OnUpdateUIPasswordCheckbox(wxUpdateUIEvent& event)
 851 {
 852     // can't put multiline control in password mode
 853     event.Enable( IsSingleLine() );
 854 }
 855
 856 void TextWidgetsPage::OnUpdateUIResetButton(wxUpdateUIEvent& event)
 857 {
 858     event.Enable( (m_radioTextLines->GetSelection() != DEFAULTS.textLines) ||
 859 #ifdef __WXMSW__
 860                   (m_radioKind->GetSelection() != DEFAULTS.textKind) ||
 861 #endif // __WXMSW__
 862                   (m_chkReadonly->GetValue() != DEFAULTS.readonly) ||
 863                   (m_chkPassword->GetValue() != DEFAULTS.password) ||
 864                   (m_radioWrap->GetSelection() != DEFAULTS.wrapStyle) );
 865 }
 866
 867 void TextWidgetsPage::OnText(wxCommandEvent& WXUNUSED(event))
 868 {
 869     // small hack to suppress the very first message: by then the logging is
 870     // not yet redirected and so initial setting of the text value results in
 871     // an annoying message box
 872     static bool s_firstTime = true;
 873     if ( s_firstTime )
 874     {
 875         s_firstTime = false;
 876         return;
 877     }
 878
 879     wxLogMessage(_T("Text ctrl value changed"));
 880 }
 881
 882 void TextWidgetsPage::OnTextEnter(wxCommandEvent& event)
 883 {
 884     wxLogMessage(_T("Text entered: '%s'"), event.GetString().c_str());
 885     event.Skip();
 886 }
 887
 888 void TextWidgetsPage::OnCheckOrRadioBox(wxCommandEvent& WXUNUSED(event))
 889 {
 890     CreateText();
 891 }
 892
 893 void TextWidgetsPage::OnStreamRedirector(wxCommandEvent& WXUNUSED(event))
 894 {
 895 #if wxHAS_TEXT_WINDOW_STREAM
 896     wxStreamToTextRedirector redirect(m_text);
 897     wxString str( _T("Outputed to cout, appears in wxTextCtrl!") );
 898     wxSTD cout << str << wxSTD endl;
 899 #else
 900     wxMessageBox(_T("This wxWidgets build does not support wxStreamToTextRedirector"));
 901 #endif
 902 }