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