samples/widgets/combobox.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Program:     wxWidgets Widgets Sample
   3 // Name:        combobox.cpp
   4 // Purpose:     Part of the widgets sample showing wxComboBox
   5 // Author:      Vadim Zeitlin
   6 // Created:     27.03.01
   7 // Id:          $Id$
   8 // Copyright:   (c) 2001 Vadim Zeitlin
   9 // Licence:     wxWindows licence
  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 #if wxUSE_COMBOBOX
  28
  29 // for all others, include the necessary headers
  30 #ifndef WX_PRECOMP
  31     #include "wx/log.h"
  32
  33     #include "wx/bitmap.h"
  34     #include "wx/button.h"
  35     #include "wx/checkbox.h"
  36     #include "wx/combobox.h"
  37     #include "wx/radiobox.h"
  38     #include "wx/statbox.h"
  39     #include "wx/textctrl.h"
  40 #endif
  41
  42 #include "wx/sizer.h"
  43
  44 #include "itemcontainer.h"
  45 #include "widgets.h"
  46 #include "icons/combobox.xpm"
  47
  48 // ----------------------------------------------------------------------------
  49 // constants
  50 // ----------------------------------------------------------------------------
  51
  52 // control ids
  53 enum
  54 {
  55     ComboPage_Reset = wxID_HIGHEST,
  56     ComboPage_Popup,
  57     ComboPage_Dismiss,
  58     ComboPage_SetCurrent,
  59     ComboPage_CurText,
  60     ComboPage_InsertionPointText,
  61     ComboPage_Insert,
  62     ComboPage_InsertText,
  63     ComboPage_Add,
  64     ComboPage_AddText,
  65     ComboPage_SetFirst,
  66     ComboPage_SetFirstText,
  67     ComboPage_AddSeveral,
  68     ComboPage_AddMany,
  69     ComboPage_Clear,
  70     ComboPage_Change,
  71     ComboPage_ChangeText,
  72     ComboPage_Delete,
  73     ComboPage_DeleteText,
  74     ComboPage_DeleteSel,
  75     ComboPage_SetValue,
  76     ComboPage_SetValueText,
  77     ComboPage_Combo,
  78     ComboPage_ContainerTests
  79 };
  80
  81 // kinds of comboboxes
  82 enum
  83 {
  84     ComboKind_Default,
  85     ComboKind_Simple,
  86     ComboKind_DropDown
  87 };
  88
  89 // ----------------------------------------------------------------------------
  90 // ComboboxWidgetsPage
  91 // ----------------------------------------------------------------------------
  92
  93 class ComboboxWidgetsPage : public ItemContainerWidgetsPage
  94 {
  95 public:
  96     ComboboxWidgetsPage(WidgetsBookCtrl *book, wxImageList *imaglist);
  97
  98     virtual wxControl *GetWidget() const { return m_combobox; }
  99     virtual wxTextEntryBase *GetTextEntry() const { return m_combobox; }
 100     virtual wxItemContainer* GetContainer() const { return m_combobox; }
 101     virtual void RecreateWidget() { CreateCombo(); }
 102
 103     // lazy creation of the content
 104     virtual void CreateContent();
 105
 106 protected:
 107     // event handlers
 108     void OnButtonReset(wxCommandEvent& event);
 109     void OnButtonPopup(wxCommandEvent&) { m_combobox->Popup(); }
 110     void OnButtonDismiss(wxCommandEvent&) { m_combobox->Dismiss(); }
 111     void OnButtonChange(wxCommandEvent& event);
 112     void OnButtonDelete(wxCommandEvent& event);
 113     void OnButtonDeleteSel(wxCommandEvent& event);
 114     void OnButtonClear(wxCommandEvent& event);
 115     void OnButtonInsert(wxCommandEvent &event);
 116     void OnButtonAdd(wxCommandEvent& event);
 117     void OnButtonSetFirst(wxCommandEvent& event);
 118     void OnButtonAddSeveral(wxCommandEvent& event);
 119     void OnButtonAddMany(wxCommandEvent& event);
 120     void OnButtonSetValue(wxCommandEvent& event);
 121     void OnButtonSetCurrent(wxCommandEvent& event);
 122
 123     void OnDropdown(wxCommandEvent& event);
 124     void OnCloseup(wxCommandEvent& event);
 125     void OnComboBox(wxCommandEvent& event);
 126     void OnComboText(wxCommandEvent& event);
 127
 128     void OnCheckOrRadioBox(wxCommandEvent& event);
 129
 130     void OnUpdateUIInsertionPointText(wxUpdateUIEvent& event);
 131
 132     void OnUpdateUIInsert(wxUpdateUIEvent& event);
 133     void OnUpdateUIAddSeveral(wxUpdateUIEvent& event);
 134     void OnUpdateUIClearButton(wxUpdateUIEvent& event);
 135     void OnUpdateUIDeleteButton(wxUpdateUIEvent& event);
 136     void OnUpdateUIDeleteSelButton(wxUpdateUIEvent& event);
 137     void OnUpdateUIResetButton(wxUpdateUIEvent& event);
 138     void OnUpdateUISetCurrent(wxUpdateUIEvent& event);
 139
 140     // reset the combobox parameters
 141     void Reset();
 142
 143     // (re)create the combobox
 144     void CreateCombo();
 145
 146     // the controls
 147     // ------------
 148
 149     // the sel mode radiobox
 150     wxRadioBox *m_radioKind;
 151
 152     // the checkboxes for styles
 153     wxCheckBox *m_chkSort,
 154                *m_chkReadonly,
 155                *m_chkFilename;
 156
 157     // the combobox itself and the sizer it is in
 158     wxComboBox *m_combobox;
 159     wxSizer *m_sizerCombo;
 160
 161     // the text entries for "Add/change string" and "Delete" buttons
 162     wxTextCtrl *m_textInsert,
 163                *m_textAdd,
 164                *m_textSetFirst,
 165                *m_textChange,
 166                *m_textSetValue,
 167                *m_textDelete,
 168                *m_textCur;
 169
 170 private:
 171     DECLARE_EVENT_TABLE()
 172     DECLARE_WIDGETS_PAGE(ComboboxWidgetsPage)
 173 };
 174
 175 // ----------------------------------------------------------------------------
 176 // event tables
 177 // ----------------------------------------------------------------------------
 178
 179 BEGIN_EVENT_TABLE(ComboboxWidgetsPage, WidgetsPage)
 180     EVT_BUTTON(ComboPage_Reset, ComboboxWidgetsPage::OnButtonReset)
 181     EVT_BUTTON(ComboPage_Popup, ComboboxWidgetsPage::OnButtonPopup)
 182     EVT_BUTTON(ComboPage_Dismiss, ComboboxWidgetsPage::OnButtonDismiss)
 183     EVT_BUTTON(ComboPage_Change, ComboboxWidgetsPage::OnButtonChange)
 184     EVT_BUTTON(ComboPage_Delete, ComboboxWidgetsPage::OnButtonDelete)
 185     EVT_BUTTON(ComboPage_DeleteSel, ComboboxWidgetsPage::OnButtonDeleteSel)
 186     EVT_BUTTON(ComboPage_Clear, ComboboxWidgetsPage::OnButtonClear)
 187     EVT_BUTTON(ComboPage_Insert, ComboboxWidgetsPage::OnButtonInsert)
 188     EVT_BUTTON(ComboPage_Add, ComboboxWidgetsPage::OnButtonAdd)
 189     EVT_BUTTON(ComboPage_SetFirst, ComboboxWidgetsPage::OnButtonSetFirst)
 190     EVT_BUTTON(ComboPage_AddSeveral, ComboboxWidgetsPage::OnButtonAddSeveral)
 191     EVT_BUTTON(ComboPage_AddMany, ComboboxWidgetsPage::OnButtonAddMany)
 192     EVT_BUTTON(ComboPage_SetValue, ComboboxWidgetsPage::OnButtonSetValue)
 193     EVT_BUTTON(ComboPage_SetCurrent, ComboboxWidgetsPage::OnButtonSetCurrent)
 194     EVT_BUTTON(ComboPage_ContainerTests, ItemContainerWidgetsPage::OnButtonTestItemContainer)
 195
 196     EVT_TEXT_ENTER(ComboPage_InsertText, ComboboxWidgetsPage::OnButtonInsert)
 197     EVT_TEXT_ENTER(ComboPage_AddText, ComboboxWidgetsPage::OnButtonAdd)
 198     EVT_TEXT_ENTER(ComboPage_DeleteText, ComboboxWidgetsPage::OnButtonDelete)
 199
 200     EVT_UPDATE_UI(ComboPage_InsertionPointText, ComboboxWidgetsPage::OnUpdateUIInsertionPointText)
 201
 202     EVT_UPDATE_UI(ComboPage_Reset, ComboboxWidgetsPage::OnUpdateUIResetButton)
 203     EVT_UPDATE_UI(ComboPage_Insert, ComboboxWidgetsPage::OnUpdateUIInsert)
 204     EVT_UPDATE_UI(ComboPage_AddSeveral, ComboboxWidgetsPage::OnUpdateUIAddSeveral)
 205     EVT_UPDATE_UI(ComboPage_Clear, ComboboxWidgetsPage::OnUpdateUIClearButton)
 206     EVT_UPDATE_UI(ComboPage_DeleteText, ComboboxWidgetsPage::OnUpdateUIClearButton)
 207     EVT_UPDATE_UI(ComboPage_Delete, ComboboxWidgetsPage::OnUpdateUIDeleteButton)
 208     EVT_UPDATE_UI(ComboPage_Change, ComboboxWidgetsPage::OnUpdateUIDeleteSelButton)
 209     EVT_UPDATE_UI(ComboPage_ChangeText, ComboboxWidgetsPage::OnUpdateUIDeleteSelButton)
 210     EVT_UPDATE_UI(ComboPage_DeleteSel, ComboboxWidgetsPage::OnUpdateUIDeleteSelButton)
 211     EVT_UPDATE_UI(ComboPage_SetCurrent, ComboboxWidgetsPage::OnUpdateUISetCurrent)
 212
 213     EVT_COMBOBOX(ComboPage_Combo, ComboboxWidgetsPage::OnComboBox)
 214     EVT_COMBOBOX_DROPDOWN(ComboPage_Combo, ComboboxWidgetsPage::OnDropdown)
 215     EVT_COMBOBOX_CLOSEUP(ComboPage_Combo, ComboboxWidgetsPage::OnCloseup)
 216     EVT_TEXT(ComboPage_Combo, ComboboxWidgetsPage::OnComboText)
 217     EVT_TEXT_ENTER(ComboPage_Combo, ComboboxWidgetsPage::OnComboText)
 218
 219     EVT_CHECKBOX(wxID_ANY, ComboboxWidgetsPage::OnCheckOrRadioBox)
 220     EVT_RADIOBOX(wxID_ANY, ComboboxWidgetsPage::OnCheckOrRadioBox)
 221 END_EVENT_TABLE()
 222
 223 // ============================================================================
 224 // implementation
 225 // ============================================================================
 226
 227 #if defined(__WXUNIVERSAL__)
 228     #define FAMILY_CTRLS UNIVERSAL_CTRLS
 229 #else
 230     #define FAMILY_CTRLS NATIVE_CTRLS
 231 #endif
 232
 233 IMPLEMENT_WIDGETS_PAGE(ComboboxWidgetsPage, wxT("Combobox"),
 234                        FAMILY_CTRLS | WITH_ITEMS_CTRLS | COMBO_CTRLS
 235                        );
 236
 237 ComboboxWidgetsPage::ComboboxWidgetsPage(WidgetsBookCtrl *book,
 238                                          wxImageList *imaglist)
 239                   : ItemContainerWidgetsPage(book, imaglist, combobox_xpm)
 240 {
 241     // init everything
 242     m_chkSort =
 243     m_chkReadonly =
 244     m_chkFilename = (wxCheckBox *)NULL;
 245
 246     m_combobox = (wxComboBox *)NULL;
 247     m_sizerCombo = (wxSizer *)NULL;
 248 }
 249
 250 void ComboboxWidgetsPage::CreateContent()
 251 {
 252     /*
 253        What we create here is a frame having 3 panes: style pane is the
 254        leftmost one, in the middle the pane with buttons allowing to perform
 255        miscellaneous combobox operations and the pane containing the combobox
 256        itself to the right
 257     */
 258     wxSizer *sizerTop = new wxBoxSizer(wxHORIZONTAL);
 259
 260     // upper left pane
 261
 262     // should be in sync with ComboKind_XXX values
 263     static const wxString kinds[] =
 264     {
 265         wxT("default"),
 266         wxT("simple"),
 267         wxT("drop down"),
 268     };
 269
 270     m_radioKind = new wxRadioBox(this, wxID_ANY, wxT("Combobox &kind:"),
 271                                  wxDefaultPosition, wxDefaultSize,
 272                                  WXSIZEOF(kinds), kinds,
 273                                  1, wxRA_SPECIFY_COLS);
 274
 275     wxSizer *sizerLeftTop = new wxStaticBoxSizer(wxVERTICAL, this, "&Set style");
 276
 277     m_chkSort = CreateCheckBoxAndAddToSizer(sizerLeftTop, wxT("&Sort items"));
 278     m_chkReadonly = CreateCheckBoxAndAddToSizer(sizerLeftTop, wxT("&Read only"));
 279     m_chkFilename = CreateCheckBoxAndAddToSizer(sizerLeftTop, wxT("&File name"));
 280     m_chkFilename->Disable(); // not implemented yet
 281
 282     sizerLeftTop->Add(5, 5, 0, wxGROW | wxALL, 5); // spacer
 283     sizerLeftTop->Add(m_radioKind, 0, wxGROW | wxALL, 5);
 284
 285     wxButton *btn = new wxButton(this, ComboPage_Reset, wxT("&Reset"));
 286     sizerLeftTop->Add(btn, 0, wxALIGN_CENTRE_HORIZONTAL | wxALL, 15);
 287
 288     // lower left pane
 289     wxSizer *sizerLeftBottom = new wxStaticBoxSizer(wxVERTICAL, this, "&Popup");
 290     sizerLeftBottom->Add(new wxButton(this, ComboPage_Popup, "&Show"),
 291                          wxSizerFlags().Border().Centre());
 292     sizerLeftBottom->Add(new wxButton(this, ComboPage_Dismiss, "&Hide"),
 293                          wxSizerFlags().Border().Centre());
 294
 295
 296     wxSizer *sizerLeft = new wxBoxSizer(wxVERTICAL);
 297     sizerLeft->Add(sizerLeftTop);
 298     sizerLeft->AddSpacer(10);
 299     sizerLeft->Add(sizerLeftBottom);
 300
 301     // middle pane
 302     wxStaticBox *box2 = new wxStaticBox(this, wxID_ANY,
 303         wxT("&Change combobox contents"));
 304     wxSizer *sizerMiddle = new wxStaticBoxSizer(box2, wxVERTICAL);
 305
 306     wxSizer *sizerRow;
 307
 308     sizerRow = CreateSizerWithTextAndButton(ComboPage_SetCurrent,
 309                                             wxT("Current &selection"),
 310                                             ComboPage_CurText,
 311                                             &m_textCur);
 312
 313     sizerMiddle->Add(sizerRow, 0, wxALL | wxGROW, 5);
 314
 315     wxTextCtrl *text;
 316     sizerRow = CreateSizerWithTextAndLabel(wxT("Insertion Point"),
 317                                            ComboPage_InsertionPointText,
 318                                            &text);
 319     text->SetEditable(false);
 320
 321     sizerMiddle->Add(sizerRow, 0, wxALL | wxGROW, 5);
 322
 323     sizerRow = CreateSizerWithTextAndButton(ComboPage_Insert,
 324                                             wxT("&Insert this string"),
 325                                             ComboPage_InsertText,
 326                                             &m_textInsert);
 327     sizerMiddle->Add(sizerRow, 0, wxALL | wxGROW, 5);
 328
 329     sizerRow = CreateSizerWithTextAndButton(ComboPage_Add,
 330                                             wxT("&Add this string"),
 331                                             ComboPage_AddText,
 332                                             &m_textAdd);
 333     sizerMiddle->Add(sizerRow, 0, wxALL | wxGROW, 5);
 334
 335     sizerRow = CreateSizerWithTextAndButton(ComboPage_SetFirst,
 336                                             wxT("Change &1st string"),
 337                                             ComboPage_SetFirstText,
 338                                             &m_textSetFirst);
 339     sizerMiddle->Add(sizerRow, 0, wxALL | wxGROW, 5);
 340
 341     btn = new wxButton(this, ComboPage_AddSeveral, wxT("&Append a few strings"));
 342     sizerMiddle->Add(btn, 0, wxALL | wxGROW, 5);
 343
 344     btn = new wxButton(this, ComboPage_AddMany, wxT("Append &many strings"));
 345     sizerMiddle->Add(btn, 0, wxALL | wxGROW, 5);
 346
 347     sizerRow = CreateSizerWithTextAndButton(ComboPage_Change,
 348                                             wxT("C&hange current"),
 349                                             ComboPage_ChangeText,
 350                                             &m_textChange);
 351     sizerMiddle->Add(sizerRow, 0, wxALL | wxGROW, 5);
 352
 353     sizerRow = CreateSizerWithTextAndButton(ComboPage_Delete,
 354                                             wxT("&Delete this item"),
 355                                             ComboPage_DeleteText,
 356                                             &m_textDelete);
 357     sizerMiddle->Add(sizerRow, 0, wxALL | wxGROW, 5);
 358
 359     btn = new wxButton(this, ComboPage_DeleteSel, wxT("Delete &selection"));
 360     sizerMiddle->Add(btn, 0, wxALL | wxGROW, 5);
 361
 362     btn = new wxButton(this, ComboPage_Clear, wxT("&Clear"));
 363     sizerMiddle->Add(btn, 0, wxALL | wxGROW, 5);
 364
 365     sizerRow = CreateSizerWithTextAndButton(ComboPage_SetValue,
 366                                             wxT("SetValue"),
 367                                             ComboPage_SetValueText,
 368                                             &m_textSetValue);
 369     sizerMiddle->Add(sizerRow, 0, wxALL | wxGROW, 5);
 370
 371     btn = new wxButton(this, ComboPage_ContainerTests, wxT("Run &tests"));
 372     sizerMiddle->Add(btn, 0, wxALL | wxGROW, 5);
 373
 374
 375
 376     // right pane
 377     wxSizer *sizerRight = new wxBoxSizer(wxVERTICAL);
 378     m_combobox = new wxComboBox(this, ComboPage_Combo, wxEmptyString,
 379                                 wxDefaultPosition, wxDefaultSize,
 380                                 0, NULL,
 381                                 0);
 382     sizerRight->Add(m_combobox, 0, wxGROW | wxALL, 5);
 383     sizerRight->SetMinSize(150, 0);
 384     m_sizerCombo = sizerRight; // save it to modify it later
 385
 386     // the 3 panes panes compose the window
 387     sizerTop->Add(sizerLeft, 0, wxGROW | (wxALL & ~wxLEFT), 10);
 388     sizerTop->Add(sizerMiddle, 1, wxGROW | wxALL, 10);
 389     sizerTop->Add(sizerRight, 1, wxGROW | (wxALL & ~wxRIGHT), 10);
 390
 391     // final initializations
 392     Reset();
 393
 394     SetSizer(sizerTop);
 395 }
 396
 397 // ----------------------------------------------------------------------------
 398 // operations
 399 // ----------------------------------------------------------------------------
 400
 401 void ComboboxWidgetsPage::Reset()
 402 {
 403     m_chkSort->SetValue(false);
 404     m_chkReadonly->SetValue(false);
 405     m_chkFilename->SetValue(false);
 406 }
 407
 408 void ComboboxWidgetsPage::CreateCombo()
 409 {
 410     int flags = ms_defaultFlags;
 411
 412     if ( m_chkSort->GetValue() )
 413         flags |= wxCB_SORT;
 414     if ( m_chkReadonly->GetValue() )
 415         flags |= wxCB_READONLY;
 416
 417     switch ( m_radioKind->GetSelection() )
 418     {
 419         default:
 420             wxFAIL_MSG( wxT("unknown combo kind") );
 421             // fall through
 422
 423         case ComboKind_Default:
 424             break;
 425
 426         case ComboKind_Simple:
 427             flags |= wxCB_SIMPLE;
 428             break;
 429
 430         case ComboKind_DropDown:
 431             flags = wxCB_DROPDOWN;
 432             break;
 433     }
 434
 435     wxArrayString items;
 436     if ( m_combobox )
 437     {
 438         unsigned int count = m_combobox->GetCount();
 439         for ( unsigned int n = 0; n < count; n++ )
 440         {
 441             items.Add(m_combobox->GetString(n));
 442         }
 443
 444         m_sizerCombo->Detach( m_combobox );
 445         delete m_combobox;
 446     }
 447
 448     m_combobox = new wxComboBox(this, ComboPage_Combo, wxEmptyString,
 449                                 wxDefaultPosition, wxDefaultSize,
 450                                 0, NULL,
 451                                 flags);
 452
 453 #if 0
 454     if ( m_chkFilename->GetValue() )
 455         ;
 456 #endif // TODO
 457
 458     unsigned int count = items.GetCount();
 459     for ( unsigned int n = 0; n < count; n++ )
 460     {
 461         m_combobox->Append(items[n]);
 462     }
 463
 464     m_sizerCombo->Add(m_combobox, 0, wxGROW | wxALL, 5);
 465     m_sizerCombo->Layout();
 466 }
 467
 468 // ----------------------------------------------------------------------------
 469 // event handlers
 470 // ----------------------------------------------------------------------------
 471
 472 void ComboboxWidgetsPage::OnButtonReset(wxCommandEvent& WXUNUSED(event))
 473 {
 474     Reset();
 475
 476     CreateCombo();
 477 }
 478
 479 void ComboboxWidgetsPage::OnButtonChange(wxCommandEvent& WXUNUSED(event))
 480 {
 481     int sel = m_combobox->GetSelection();
 482     if ( sel != wxNOT_FOUND )
 483     {
 484         m_combobox->SetString(sel, m_textChange->GetValue());
 485     }
 486 }
 487
 488 void ComboboxWidgetsPage::OnButtonDelete(wxCommandEvent& WXUNUSED(event))
 489 {
 490     unsigned long n;
 491     if ( !m_textDelete->GetValue().ToULong(&n) ||
 492             (n >= m_combobox->GetCount()) )
 493     {
 494         return;
 495     }
 496
 497     m_combobox->Delete(n);
 498 }
 499
 500 void ComboboxWidgetsPage::OnButtonDeleteSel(wxCommandEvent& WXUNUSED(event))
 501 {
 502     int sel = m_combobox->GetSelection();
 503     if ( sel != wxNOT_FOUND )
 504     {
 505         m_combobox->Delete(sel);
 506     }
 507 }
 508
 509 void ComboboxWidgetsPage::OnButtonSetValue(wxCommandEvent& WXUNUSED(event))
 510 {
 511     wxString value = m_textSetValue->GetValue();
 512     m_combobox->SetValue( value );
 513 }
 514
 515 void ComboboxWidgetsPage::OnButtonClear(wxCommandEvent& WXUNUSED(event))
 516 {
 517     m_combobox->Clear();
 518 }
 519
 520 void ComboboxWidgetsPage::OnButtonInsert(wxCommandEvent& WXUNUSED(event))
 521 {
 522     static unsigned int s_item = 0;
 523
 524     wxString s = m_textInsert->GetValue();
 525     if ( !m_textInsert->IsModified() )
 526     {
 527         // update the default string
 528         m_textInsert->SetValue(wxString::Format(wxT("test item %u"), ++s_item));
 529     }
 530
 531     if (m_combobox->GetSelection() >= 0)
 532         m_combobox->Insert(s, m_combobox->GetSelection());
 533 }
 534
 535 void ComboboxWidgetsPage::OnButtonAdd(wxCommandEvent& WXUNUSED(event))
 536 {
 537     static unsigned int s_item = 0;
 538
 539     wxString s = m_textAdd->GetValue();
 540     if ( !m_textAdd->IsModified() )
 541     {
 542         // update the default string
 543         m_textAdd->SetValue(wxString::Format(wxT("test item %u"), ++s_item));
 544     }
 545
 546     m_combobox->Append(s);
 547 }
 548
 549 void ComboboxWidgetsPage::OnButtonSetFirst(wxCommandEvent& WXUNUSED(event))
 550 {
 551     if ( m_combobox->IsListEmpty() )
 552     {
 553         wxLogWarning("No string to change.");
 554         return;
 555     }
 556
 557     m_combobox->SetString(0, m_textSetFirst->GetValue());
 558 }
 559
 560 void ComboboxWidgetsPage::OnButtonAddMany(wxCommandEvent& WXUNUSED(event))
 561 {
 562     // "many" means 1000 here
 563     for ( unsigned int n = 0; n < 1000; n++ )
 564     {
 565         m_combobox->Append(wxString::Format(wxT("item #%u"), n));
 566     }
 567 }
 568
 569 void ComboboxWidgetsPage::OnButtonSetCurrent(wxCommandEvent& WXUNUSED(event))
 570 {
 571     long n;
 572     if ( !m_textCur->GetValue().ToLong(&n) )
 573         return;
 574
 575     m_combobox->SetSelection(n);
 576 }
 577
 578 void ComboboxWidgetsPage::OnButtonAddSeveral(wxCommandEvent& WXUNUSED(event))
 579 {
 580     m_combobox->Append(wxT("First"));
 581     m_combobox->Append(wxT("another one"));
 582     m_combobox->Append(wxT("and the last (very very very very very very very very very very long) one"));
 583 }
 584
 585 void ComboboxWidgetsPage::OnUpdateUIInsertionPointText(wxUpdateUIEvent& event)
 586 {
 587     if (m_combobox)
 588         event.SetText( wxString::Format(wxT("%ld"), m_combobox->GetInsertionPoint()) );
 589 }
 590
 591 void ComboboxWidgetsPage::OnUpdateUIResetButton(wxUpdateUIEvent& event)
 592 {
 593     event.Enable( m_chkSort->GetValue() ||
 594                     m_chkReadonly->GetValue() ||
 595                         m_chkFilename->GetValue() );
 596 }
 597
 598 void ComboboxWidgetsPage::OnUpdateUIInsert(wxUpdateUIEvent& event)
 599 {
 600     if (m_combobox)
 601     {
 602         bool enable = !(m_combobox->GetWindowStyle() & wxCB_SORT) &&
 603                        (m_combobox->GetSelection() >= 0);
 604
 605         event.Enable(enable);
 606     }
 607 }
 608
 609 void ComboboxWidgetsPage::OnUpdateUIDeleteButton(wxUpdateUIEvent& event)
 610 {
 611     if (m_combobox)
 612     {
 613       unsigned long n;
 614       event.Enable(m_textDelete->GetValue().ToULong(&n) &&
 615         (n < (unsigned)m_combobox->GetCount()));
 616     }
 617 }
 618
 619 void ComboboxWidgetsPage::OnUpdateUIDeleteSelButton(wxUpdateUIEvent& event)
 620 {
 621     if (m_combobox)
 622         event.Enable(m_combobox->GetSelection() != wxNOT_FOUND);
 623 }
 624
 625 void ComboboxWidgetsPage::OnUpdateUIClearButton(wxUpdateUIEvent& event)
 626 {
 627     if (m_combobox)
 628         event.Enable(m_combobox->GetCount() != 0);
 629 }
 630
 631 void ComboboxWidgetsPage::OnUpdateUIAddSeveral(wxUpdateUIEvent& event)
 632 {
 633     if (m_combobox)
 634         event.Enable(!(m_combobox->GetWindowStyle() & wxCB_SORT));
 635 }
 636
 637 void ComboboxWidgetsPage::OnUpdateUISetCurrent(wxUpdateUIEvent& event)
 638 {
 639     long n;
 640     event.Enable( m_textCur->GetValue().ToLong(&n) &&
 641                     (n == wxNOT_FOUND ||
 642                         (n >= 0 && (unsigned)n < m_combobox->GetCount())) );
 643 }
 644
 645 void ComboboxWidgetsPage::OnComboText(wxCommandEvent& event)
 646 {
 647     if (!m_combobox)
 648         return;
 649
 650     wxString s = event.GetString();
 651
 652     wxASSERT_MSG( s == m_combobox->GetValue(),
 653                   wxT("event and combobox values should be the same") );
 654
 655     if (event.GetEventType() == wxEVT_COMMAND_TEXT_ENTER)
 656     {
 657         wxLogMessage(wxT("Combobox enter pressed (now '%s')"), s.c_str());
 658     }
 659     else
 660     {
 661         wxLogMessage(wxT("Combobox text changed (now '%s')"), s.c_str());
 662     }
 663 }
 664
 665 void ComboboxWidgetsPage::OnComboBox(wxCommandEvent& event)
 666 {
 667     long sel = event.GetInt();
 668     const wxString selstr = wxString::Format(wxT("%ld"), sel);
 669     m_textDelete->SetValue(selstr);
 670     m_textCur->SetValue(selstr);
 671
 672     wxLogMessage(wxT("Combobox item %ld selected"), sel);
 673
 674     wxLogMessage(wxT("Combobox GetValue(): %s"), m_combobox->GetValue().c_str() );
 675
 676     if ( event.GetString() != m_combobox->GetValue() )
 677     {
 678         wxLogMessage("ERROR: Event has different string \"%s\"",
 679                      event.GetString());
 680     }
 681 }
 682
 683 void ComboboxWidgetsPage::OnCheckOrRadioBox(wxCommandEvent& WXUNUSED(event))
 684 {
 685     CreateCombo();
 686 }
 687
 688 void ComboboxWidgetsPage::OnDropdown(wxCommandEvent& WXUNUSED(event))
 689 {
 690     wxLogMessage(wxT("Combobox dropped down"));
 691 }
 692
 693 void ComboboxWidgetsPage::OnCloseup(wxCommandEvent& WXUNUSED(event))
 694 {
 695     wxLogMessage(wxT("Combobox closed up"));
 696 }
 697
 698 #endif // wxUSE_COMBOBOX