samples/widgets/listbox.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Program:     wxWidgets Widgets Sample
   3 // Name:        listbox.cpp
   4 // Purpose:     Part of the widgets sample showing wxListbox
   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 #if wxUSE_LISTBOX
  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/listbox.h"
  38     #include "wx/radiobox.h"
  39     #include "wx/statbox.h"
  40     #include "wx/textctrl.h"
  41 #endif
  42
  43 #include "wx/sizer.h"
  44
  45 #include "wx/checklst.h"
  46
  47 #include "widgets.h"
  48
  49 #include "icons/listbox.xpm"
  50
  51 // ----------------------------------------------------------------------------
  52 // constants
  53 // ----------------------------------------------------------------------------
  54
  55 // control ids
  56 enum
  57 {
  58     ListboxPage_Reset = wxID_HIGHEST,
  59     ListboxPage_Add,
  60     ListboxPage_AddText,
  61     ListboxPage_AddSeveral,
  62     ListboxPage_AddMany,
  63     ListboxPage_Clear,
  64     ListboxPage_Change,
  65     ListboxPage_ChangeText,
  66     ListboxPage_Delete,
  67     ListboxPage_DeleteText,
  68     ListboxPage_DeleteSel,
  69     ListboxPage_Listbox
  70 };
  71
  72 // ----------------------------------------------------------------------------
  73 // ListboxWidgetsPage
  74 // ----------------------------------------------------------------------------
  75
  76 class ListboxWidgetsPage : public WidgetsPage
  77 {
  78 public:
  79     ListboxWidgetsPage(WidgetsBookCtrl *book, wxImageList *imaglist);
  80
  81     virtual wxControl *GetWidget() const { return m_lbox; }
  82     virtual void RecreateWidget() { CreateLbox(); }
  83
  84 protected:
  85     // event handlers
  86     void OnButtonReset(wxCommandEvent& event);
  87     void OnButtonChange(wxCommandEvent& event);
  88     void OnButtonDelete(wxCommandEvent& event);
  89     void OnButtonDeleteSel(wxCommandEvent& event);
  90     void OnButtonClear(wxCommandEvent& event);
  91     void OnButtonAdd(wxCommandEvent& event);
  92     void OnButtonAddSeveral(wxCommandEvent& event);
  93     void OnButtonAddMany(wxCommandEvent& event);
  94
  95     void OnListbox(wxCommandEvent& event);
  96     void OnListboxDClick(wxCommandEvent& event);
  97     void OnCheckListbox(wxCommandEvent& event);
  98
  99     void OnCheckOrRadioBox(wxCommandEvent& event);
 100
 101     void OnUpdateUIAddSeveral(wxUpdateUIEvent& event);
 102     void OnUpdateUIClearButton(wxUpdateUIEvent& event);
 103     void OnUpdateUIDeleteButton(wxUpdateUIEvent& event);
 104     void OnUpdateUIDeleteSelButton(wxUpdateUIEvent& event);
 105     void OnUpdateUIResetButton(wxUpdateUIEvent& event);
 106
 107     // reset the listbox parameters
 108     void Reset();
 109
 110     // (re)create the listbox
 111     void CreateLbox();
 112
 113     // listbox parameters
 114     // ------------------
 115
 116     // the selection mode
 117     enum LboxSelection
 118     {
 119         LboxSel_Single,
 120         LboxSel_Extended,
 121         LboxSel_Multiple
 122     } m_lboxSelMode;
 123
 124     // should it be sorted?
 125     bool m_sorted;
 126
 127     // should it have horz scroll/vert scrollbar permanently shown?
 128     bool m_horzScroll,
 129          m_vertScrollAlways;
 130
 131     // the controls
 132     // ------------
 133
 134     // the sel mode radiobox
 135     wxRadioBox *m_radioSelMode;
 136
 137     // the checkboxes
 138     wxCheckBox *m_chkVScroll,
 139                *m_chkHScroll,
 140                *m_chkCheck,
 141                *m_chkSort,
 142                *m_chkOwnerDraw;
 143
 144     // the listbox itself and the sizer it is in
 145     wxListBox *m_lbox;
 146     wxSizer *m_sizerLbox;
 147
 148     // the text entries for "Add/change string" and "Delete" buttons
 149     wxTextCtrl *m_textAdd,
 150                *m_textChange,
 151                *m_textDelete;
 152
 153 private:
 154     DECLARE_EVENT_TABLE()
 155     DECLARE_WIDGETS_PAGE(ListboxWidgetsPage)
 156 };
 157
 158 // ----------------------------------------------------------------------------
 159 // event tables
 160 // ----------------------------------------------------------------------------
 161
 162 BEGIN_EVENT_TABLE(ListboxWidgetsPage, WidgetsPage)
 163     EVT_BUTTON(ListboxPage_Reset, ListboxWidgetsPage::OnButtonReset)
 164     EVT_BUTTON(ListboxPage_Change, ListboxWidgetsPage::OnButtonChange)
 165     EVT_BUTTON(ListboxPage_Delete, ListboxWidgetsPage::OnButtonDelete)
 166     EVT_BUTTON(ListboxPage_DeleteSel, ListboxWidgetsPage::OnButtonDeleteSel)
 167     EVT_BUTTON(ListboxPage_Clear, ListboxWidgetsPage::OnButtonClear)
 168     EVT_BUTTON(ListboxPage_Add, ListboxWidgetsPage::OnButtonAdd)
 169     EVT_BUTTON(ListboxPage_AddSeveral, ListboxWidgetsPage::OnButtonAddSeveral)
 170     EVT_BUTTON(ListboxPage_AddMany, ListboxWidgetsPage::OnButtonAddMany)
 171
 172     EVT_TEXT_ENTER(ListboxPage_AddText, ListboxWidgetsPage::OnButtonAdd)
 173     EVT_TEXT_ENTER(ListboxPage_DeleteText, ListboxWidgetsPage::OnButtonDelete)
 174
 175     EVT_UPDATE_UI(ListboxPage_Reset, ListboxWidgetsPage::OnUpdateUIResetButton)
 176     EVT_UPDATE_UI(ListboxPage_AddSeveral, ListboxWidgetsPage::OnUpdateUIAddSeveral)
 177     EVT_UPDATE_UI(ListboxPage_Clear, ListboxWidgetsPage::OnUpdateUIClearButton)
 178     EVT_UPDATE_UI(ListboxPage_DeleteText, ListboxWidgetsPage::OnUpdateUIClearButton)
 179     EVT_UPDATE_UI(ListboxPage_Delete, ListboxWidgetsPage::OnUpdateUIDeleteButton)
 180     EVT_UPDATE_UI(ListboxPage_Change, ListboxWidgetsPage::OnUpdateUIDeleteSelButton)
 181     EVT_UPDATE_UI(ListboxPage_ChangeText, ListboxWidgetsPage::OnUpdateUIDeleteSelButton)
 182     EVT_UPDATE_UI(ListboxPage_DeleteSel, ListboxWidgetsPage::OnUpdateUIDeleteSelButton)
 183
 184     EVT_LISTBOX(ListboxPage_Listbox, ListboxWidgetsPage::OnListbox)
 185     EVT_LISTBOX_DCLICK(ListboxPage_Listbox, ListboxWidgetsPage::OnListboxDClick)
 186     EVT_CHECKLISTBOX(ListboxPage_Listbox, ListboxWidgetsPage::OnCheckListbox)
 187
 188     EVT_CHECKBOX(wxID_ANY, ListboxWidgetsPage::OnCheckOrRadioBox)
 189     EVT_RADIOBOX(wxID_ANY, ListboxWidgetsPage::OnCheckOrRadioBox)
 190 END_EVENT_TABLE()
 191
 192 // ============================================================================
 193 // implementation
 194 // ============================================================================
 195
 196 #if defined(__WXUNIVERSAL__)
 197     #define FAMILY_CTRLS UNIVERSAL_CTRLS
 198 #else
 199     #define FAMILY_CTRLS NATIVE_CTRLS
 200 #endif
 201
 202 IMPLEMENT_WIDGETS_PAGE(ListboxWidgetsPage, _T("Listbox"),
 203                        FAMILY_CTRLS | WITH_ITEMS_CTRLS
 204                        );
 205
 206 ListboxWidgetsPage::ListboxWidgetsPage(WidgetsBookCtrl *book,
 207                                        wxImageList *imaglist)
 208                   : WidgetsPage(book)
 209 {
 210     imaglist->Add(wxBitmap(listbox_xpm));
 211
 212     // init everything
 213     m_radioSelMode = (wxRadioBox *)NULL;
 214
 215     m_chkVScroll =
 216     m_chkHScroll =
 217     m_chkCheck =
 218     m_chkSort =
 219     m_chkOwnerDraw = (wxCheckBox *)NULL;
 220
 221     m_lbox = (wxListBox *)NULL;
 222     m_sizerLbox = (wxSizer *)NULL;
 223
 224     /*
 225        What we create here is a frame having 3 panes: style pane is the
 226        leftmost one, in the middle the pane with buttons allowing to perform
 227        miscellaneous listbox operations and the pane containing the listbox
 228        itself to the right
 229     */
 230     wxSizer *sizerTop = new wxBoxSizer(wxHORIZONTAL);
 231
 232     // left pane
 233     wxStaticBox *box = new wxStaticBox(this, wxID_ANY,
 234         _T("&Set listbox parameters"));
 235     wxSizer *sizerLeft = new wxStaticBoxSizer(box, wxVERTICAL);
 236
 237     static const wxString modes[] =
 238     {
 239         _T("single"),
 240         _T("extended"),
 241         _T("multiple"),
 242     };
 243
 244     m_radioSelMode = new wxRadioBox(this, wxID_ANY, _T("Selection &mode:"),
 245                                     wxDefaultPosition, wxDefaultSize,
 246                                     WXSIZEOF(modes), modes,
 247                                     1, wxRA_SPECIFY_COLS);
 248
 249     m_chkVScroll = CreateCheckBoxAndAddToSizer
 250                    (
 251                     sizerLeft,
 252                     _T("Always show &vertical scrollbar")
 253                    );
 254     m_chkHScroll = CreateCheckBoxAndAddToSizer
 255                    (
 256                     sizerLeft,
 257                     _T("Show &horizontal scrollbar")
 258                    );
 259     m_chkCheck = CreateCheckBoxAndAddToSizer(sizerLeft, _T("&Check list box"));
 260     m_chkSort = CreateCheckBoxAndAddToSizer(sizerLeft, _T("&Sort items"));
 261     m_chkOwnerDraw = CreateCheckBoxAndAddToSizer(sizerLeft, _T("&Owner drawn"));
 262
 263     sizerLeft->Add(5, 5, 0, wxGROW | wxALL, 5); // spacer
 264     sizerLeft->Add(m_radioSelMode, 0, wxGROW | wxALL, 5);
 265
 266     wxButton *btn = new wxButton(this, ListboxPage_Reset, _T("&Reset"));
 267     sizerLeft->Add(btn, 0, wxALIGN_CENTRE_HORIZONTAL | wxALL, 15);
 268
 269     // middle pane
 270     wxStaticBox *box2 = new wxStaticBox(this, wxID_ANY,
 271         _T("&Change listbox contents"));
 272     wxSizer *sizerMiddle = new wxStaticBoxSizer(box2, wxVERTICAL);
 273
 274     wxSizer *sizerRow = new wxBoxSizer(wxHORIZONTAL);
 275     btn = new wxButton(this, ListboxPage_Add, _T("&Add this string"));
 276     m_textAdd = new wxTextCtrl(this, ListboxPage_AddText, _T("test item 0"));
 277     sizerRow->Add(btn, 0, wxRIGHT, 5);
 278     sizerRow->Add(m_textAdd, 1, wxLEFT, 5);
 279     sizerMiddle->Add(sizerRow, 0, wxALL | wxGROW, 5);
 280
 281     btn = new wxButton(this, ListboxPage_AddSeveral, _T("&Insert a few strings"));
 282     sizerMiddle->Add(btn, 0, wxALL | wxGROW, 5);
 283
 284     btn = new wxButton(this, ListboxPage_AddMany, _T("Add &many strings"));
 285     sizerMiddle->Add(btn, 0, wxALL | wxGROW, 5);
 286
 287     sizerRow = new wxBoxSizer(wxHORIZONTAL);
 288     btn = new wxButton(this, ListboxPage_Change, _T("C&hange current"));
 289     m_textChange = new wxTextCtrl(this, ListboxPage_ChangeText, wxEmptyString);
 290     sizerRow->Add(btn, 0, wxRIGHT, 5);
 291     sizerRow->Add(m_textChange, 1, wxLEFT, 5);
 292     sizerMiddle->Add(sizerRow, 0, wxALL | wxGROW, 5);
 293
 294     sizerRow = new wxBoxSizer(wxHORIZONTAL);
 295     btn = new wxButton(this, ListboxPage_Delete, _T("&Delete this item"));
 296     m_textDelete = new wxTextCtrl(this, ListboxPage_DeleteText, wxEmptyString);
 297     sizerRow->Add(btn, 0, wxRIGHT, 5);
 298     sizerRow->Add(m_textDelete, 1, wxLEFT, 5);
 299     sizerMiddle->Add(sizerRow, 0, wxALL | wxGROW, 5);
 300
 301     btn = new wxButton(this, ListboxPage_DeleteSel, _T("Delete &selection"));
 302     sizerMiddle->Add(btn, 0, wxALL | wxGROW, 5);
 303
 304     btn = new wxButton(this, ListboxPage_Clear, _T("&Clear"));
 305     sizerMiddle->Add(btn, 0, wxALL | wxGROW, 5);
 306
 307     // right pane
 308     wxSizer *sizerRight = new wxBoxSizer(wxVERTICAL);
 309     m_lbox = new wxListBox(this, ListboxPage_Listbox,
 310                            wxDefaultPosition, wxDefaultSize,
 311                            0, NULL,
 312                            wxLB_HSCROLL);
 313     sizerRight->Add(m_lbox, 1, wxGROW | wxALL, 5);
 314     sizerRight->SetMinSize(150, 0);
 315     m_sizerLbox = sizerRight; // save it to modify it later
 316
 317     // the 3 panes panes compose the window
 318     sizerTop->Add(sizerLeft, 0, wxGROW | (wxALL & ~wxLEFT), 10);
 319     sizerTop->Add(sizerMiddle, 1, wxGROW | wxALL, 10);
 320     sizerTop->Add(sizerRight, 1, wxGROW | (wxALL & ~wxRIGHT), 10);
 321
 322     // final initializations
 323     Reset();
 324
 325     SetSizer(sizerTop);
 326
 327     sizerTop->Fit(this);
 328 }
 329
 330 // ----------------------------------------------------------------------------
 331 // operations
 332 // ----------------------------------------------------------------------------
 333
 334 void ListboxWidgetsPage::Reset()
 335 {
 336     m_radioSelMode->SetSelection(LboxSel_Single);
 337     m_chkVScroll->SetValue(false);
 338     m_chkHScroll->SetValue(true);
 339     m_chkCheck->SetValue(false);
 340     m_chkSort->SetValue(false);
 341     m_chkOwnerDraw->SetValue(false);
 342 }
 343
 344 void ListboxWidgetsPage::CreateLbox()
 345 {
 346     int flags = ms_defaultFlags;
 347     switch ( m_radioSelMode->GetSelection() )
 348     {
 349         default:
 350             wxFAIL_MSG( _T("unexpected radio box selection") );
 351
 352         case LboxSel_Single:    flags |= wxLB_SINGLE; break;
 353         case LboxSel_Extended:  flags |= wxLB_EXTENDED; break;
 354         case LboxSel_Multiple:  flags |= wxLB_MULTIPLE; break;
 355     }
 356
 357     if ( m_chkVScroll->GetValue() )
 358         flags |= wxLB_ALWAYS_SB;
 359     if ( m_chkHScroll->GetValue() )
 360         flags |= wxLB_HSCROLL;
 361     if ( m_chkSort->GetValue() )
 362         flags |= wxLB_SORT;
 363     if ( m_chkOwnerDraw->GetValue() )
 364         flags |= wxLB_OWNERDRAW;
 365
 366     wxArrayString items;
 367     if ( m_lbox )
 368     {
 369         int count = m_lbox->GetCount();
 370         for ( int n = 0; n < count; n++ )
 371         {
 372             items.Add(m_lbox->GetString(n));
 373         }
 374
 375         m_sizerLbox->Detach( m_lbox );
 376         delete m_lbox;
 377     }
 378
 379 #if wxUSE_CHECKLISTBOX
 380     if ( m_chkCheck->GetValue() )
 381     {
 382         m_lbox = new wxCheckListBox(this, ListboxPage_Listbox,
 383                                     wxDefaultPosition, wxDefaultSize,
 384                                     0, NULL,
 385                                     flags);
 386     }
 387     else // just a listbox
 388 #endif
 389     {
 390         m_lbox = new wxListBox(this, ListboxPage_Listbox,
 391                                wxDefaultPosition, wxDefaultSize,
 392                                0, NULL,
 393                                flags);
 394     }
 395
 396     m_lbox->Set(items);
 397     m_sizerLbox->Add(m_lbox, 1, wxGROW | wxALL, 5);
 398     m_sizerLbox->Layout();
 399 }
 400
 401 // ----------------------------------------------------------------------------
 402 // event handlers
 403 // ----------------------------------------------------------------------------
 404
 405 void ListboxWidgetsPage::OnButtonReset(wxCommandEvent& WXUNUSED(event))
 406 {
 407     Reset();
 408
 409     CreateLbox();
 410 }
 411
 412 void ListboxWidgetsPage::OnButtonChange(wxCommandEvent& WXUNUSED(event))
 413 {
 414     wxArrayInt selections;
 415     int count = m_lbox->GetSelections(selections);
 416     wxString s = m_textChange->GetValue();
 417     for ( int n = 0; n < count; n++ )
 418     {
 419         m_lbox->SetString(selections[n], s);
 420     }
 421 }
 422
 423 void ListboxWidgetsPage::OnButtonDelete(wxCommandEvent& WXUNUSED(event))
 424 {
 425     unsigned long n;
 426     if ( !m_textDelete->GetValue().ToULong(&n) ||
 427             (n >= (unsigned)m_lbox->GetCount()) )
 428     {
 429         return;
 430     }
 431
 432     m_lbox->Delete(n);
 433 }
 434
 435 void ListboxWidgetsPage::OnButtonDeleteSel(wxCommandEvent& WXUNUSED(event))
 436 {
 437     wxArrayInt selections;
 438     int n = m_lbox->GetSelections(selections);
 439     while ( n > 0 )
 440     {
 441         m_lbox->Delete(selections[--n]);
 442     }
 443 }
 444
 445 void ListboxWidgetsPage::OnButtonClear(wxCommandEvent& WXUNUSED(event))
 446 {
 447     m_lbox->Clear();
 448 }
 449
 450 void ListboxWidgetsPage::OnButtonAdd(wxCommandEvent& WXUNUSED(event))
 451 {
 452     static unsigned int s_item = 0;
 453
 454     wxString s = m_textAdd->GetValue();
 455     if ( !m_textAdd->IsModified() )
 456     {
 457         // update the default string
 458         m_textAdd->SetValue(wxString::Format(_T("test item %u"), ++s_item));
 459     }
 460
 461     m_lbox->Append(s);
 462 }
 463
 464 void ListboxWidgetsPage::OnButtonAddMany(wxCommandEvent& WXUNUSED(event))
 465 {
 466     // "many" means 1000 here
 467     for ( unsigned int n = 0; n < 1000; n++ )
 468     {
 469         m_lbox->Append(wxString::Format(_T("item #%u"), n));
 470     }
 471 }
 472
 473 void ListboxWidgetsPage::OnButtonAddSeveral(wxCommandEvent& WXUNUSED(event))
 474 {
 475     wxArrayString items;
 476     items.Add(_T("First"));
 477     items.Add(_T("another one"));
 478     items.Add(_T("and the last (very very very very very very very very very very long) one"));
 479     m_lbox->InsertItems(items, 0);
 480 }
 481
 482 void ListboxWidgetsPage::OnUpdateUIResetButton(wxUpdateUIEvent& event)
 483 {
 484     event.Enable( (m_radioSelMode->GetSelection() != LboxSel_Single) ||
 485                   m_chkSort->GetValue() ||
 486                   m_chkOwnerDraw->GetValue() ||
 487                   !m_chkHScroll->GetValue() ||
 488                   m_chkVScroll->GetValue() );
 489 }
 490
 491 void ListboxWidgetsPage::OnUpdateUIDeleteButton(wxUpdateUIEvent& event)
 492 {
 493     unsigned long n;
 494     event.Enable(m_textDelete->GetValue().ToULong(&n) &&
 495                     (n < (unsigned)m_lbox->GetCount()));
 496 }
 497
 498 void ListboxWidgetsPage::OnUpdateUIDeleteSelButton(wxUpdateUIEvent& event)
 499 {
 500     wxArrayInt selections;
 501     event.Enable(m_lbox->GetSelections(selections) != 0);
 502 }
 503
 504 void ListboxWidgetsPage::OnUpdateUIClearButton(wxUpdateUIEvent& event)
 505 {
 506     event.Enable(m_lbox->GetCount() != 0);
 507 }
 508
 509 void ListboxWidgetsPage::OnUpdateUIAddSeveral(wxUpdateUIEvent& event)
 510 {
 511     event.Enable(!(m_lbox->GetWindowStyle() & wxLB_SORT));
 512 }
 513
 514 void ListboxWidgetsPage::OnListbox(wxCommandEvent& event)
 515 {
 516     long sel = event.GetSelection();
 517     m_textDelete->SetValue(wxString::Format(_T("%ld"), sel));
 518
 519     if (event.IsSelection())
 520         wxLogMessage(_T("Listbox item %ld selected"), sel);
 521     else
 522         wxLogMessage(_T("Listbox item %ld deselected"), sel);
 523 }
 524
 525 void ListboxWidgetsPage::OnListboxDClick(wxCommandEvent& event)
 526 {
 527     wxLogMessage( _T("Listbox item %d double clicked"), event.GetInt() );
 528 }
 529
 530 void ListboxWidgetsPage::OnCheckListbox(wxCommandEvent& event)
 531 {
 532     wxLogMessage( _T("Listbox item %d toggled"), event.GetInt() );
 533 }
 534
 535 void ListboxWidgetsPage::OnCheckOrRadioBox(wxCommandEvent& WXUNUSED(event))
 536 {
 537     CreateLbox();
 538 }
 539
 540 #endif // wxUSE_LISTBOX