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 // for all others, include the necessary headers
  28 #ifndef WX_PRECOMP
  29     #include "wx/log.h"
  30
  31     #include "wx/bitmap.h"
  32     #include "wx/button.h"
  33     #include "wx/checkbox.h"
  34     #include "wx/combobox.h"
  35     #include "wx/listbox.h"
  36     #include "wx/radiobox.h"
  37     #include "wx/statbox.h"
  38     #include "wx/textctrl.h"
  39 #endif
  40
  41 #include "wx/sizer.h"
  42
  43 #include "wx/checklst.h"
  44
  45 #include "widgets.h"
  46 #if 1
  47 #include "icons/listbox.xpm"
  48
  49 // ----------------------------------------------------------------------------
  50 // constants
  51 // ----------------------------------------------------------------------------
  52
  53 // control ids
  54 enum
  55 {
  56     ListboxPage_Reset = 100,
  57     ListboxPage_Add,
  58     ListboxPage_AddText,
  59     ListboxPage_AddSeveral,
  60     ListboxPage_AddMany,
  61     ListboxPage_Clear,
  62     ListboxPage_Change,
  63     ListboxPage_ChangeText,
  64     ListboxPage_Delete,
  65     ListboxPage_DeleteText,
  66     ListboxPage_DeleteSel,
  67     ListboxPage_Listbox
  68 };
  69
  70 // ----------------------------------------------------------------------------
  71 // ListboxWidgetsPage
  72 // ----------------------------------------------------------------------------
  73
  74 class ListboxWidgetsPage : public WidgetsPage
  75 {
  76 public:
  77     ListboxWidgetsPage(wxNotebook *notebook, wxImageList *imaglist);
  78
  79 protected:
  80     // event handlers
  81     void OnButtonReset(wxCommandEvent& event);
  82     void OnButtonChange(wxCommandEvent& event);
  83     void OnButtonDelete(wxCommandEvent& event);
  84     void OnButtonDeleteSel(wxCommandEvent& event);
  85     void OnButtonClear(wxCommandEvent& event);
  86     void OnButtonAdd(wxCommandEvent& event);
  87     void OnButtonAddSeveral(wxCommandEvent& event);
  88     void OnButtonAddMany(wxCommandEvent& event);
  89
  90     void OnListbox(wxCommandEvent& event);
  91     void OnListboxDClick(wxCommandEvent& event);
  92     void OnCheckListbox(wxCommandEvent& event);
  93
  94     void OnCheckOrRadioBox(wxCommandEvent& event);
  95
  96     void OnUpdateUIAddSeveral(wxUpdateUIEvent& event);
  97     void OnUpdateUIClearButton(wxUpdateUIEvent& event);
  98     void OnUpdateUIDeleteButton(wxUpdateUIEvent& event);
  99     void OnUpdateUIDeleteSelButton(wxUpdateUIEvent& event);
 100     void OnUpdateUIResetButton(wxUpdateUIEvent& event);
 101
 102     // reset the listbox parameters
 103     void Reset();
 104
 105     // (re)create the listbox
 106     void CreateLbox();
 107
 108     // listbox parameters
 109     // ------------------
 110
 111     // the selection mode
 112     enum LboxSelection
 113     {
 114         LboxSel_Single,
 115         LboxSel_Extended,
 116         LboxSel_Multiple
 117     } m_lboxSelMode;
 118
 119     // should it be sorted?
 120     bool m_sorted;
 121
 122     // should it have horz scroll/vert scrollbar permanently shown?
 123     bool m_horzScroll,
 124          m_vertScrollAlways;
 125
 126     // the controls
 127     // ------------
 128
 129     // the sel mode radiobox
 130     wxRadioBox *m_radioSelMode;
 131
 132     // the checkboxes
 133     wxCheckBox *m_chkSort,
 134                *m_chkCheck,
 135                *m_chkHScroll,
 136                *m_chkVScroll;
 137
 138     // the listbox itself and the sizer it is in
 139     wxListBox *m_lbox;
 140     wxSizer *m_sizerLbox;
 141
 142     // the text entries for "Add/change string" and "Delete" buttons
 143     wxTextCtrl *m_textAdd,
 144                *m_textChange,
 145                *m_textDelete;
 146
 147 private:
 148     DECLARE_EVENT_TABLE()
 149     DECLARE_WIDGETS_PAGE(ListboxWidgetsPage)
 150 };
 151
 152 // ----------------------------------------------------------------------------
 153 // event tables
 154 // ----------------------------------------------------------------------------
 155
 156 BEGIN_EVENT_TABLE(ListboxWidgetsPage, WidgetsPage)
 157     EVT_BUTTON(ListboxPage_Reset, ListboxWidgetsPage::OnButtonReset)
 158     EVT_BUTTON(ListboxPage_Change, ListboxWidgetsPage::OnButtonChange)
 159     EVT_BUTTON(ListboxPage_Delete, ListboxWidgetsPage::OnButtonDelete)
 160     EVT_BUTTON(ListboxPage_DeleteSel, ListboxWidgetsPage::OnButtonDeleteSel)
 161     EVT_BUTTON(ListboxPage_Clear, ListboxWidgetsPage::OnButtonClear)
 162     EVT_BUTTON(ListboxPage_Add, ListboxWidgetsPage::OnButtonAdd)
 163     EVT_BUTTON(ListboxPage_AddSeveral, ListboxWidgetsPage::OnButtonAddSeveral)
 164     EVT_BUTTON(ListboxPage_AddMany, ListboxWidgetsPage::OnButtonAddMany)
 165
 166     EVT_TEXT_ENTER(ListboxPage_AddText, ListboxWidgetsPage::OnButtonAdd)
 167     EVT_TEXT_ENTER(ListboxPage_DeleteText, ListboxWidgetsPage::OnButtonDelete)
 168
 169     EVT_UPDATE_UI(ListboxPage_Reset, ListboxWidgetsPage::OnUpdateUIResetButton)
 170     EVT_UPDATE_UI(ListboxPage_AddSeveral, ListboxWidgetsPage::OnUpdateUIAddSeveral)
 171     EVT_UPDATE_UI(ListboxPage_Clear, ListboxWidgetsPage::OnUpdateUIClearButton)
 172     EVT_UPDATE_UI(ListboxPage_DeleteText, ListboxWidgetsPage::OnUpdateUIClearButton)
 173     EVT_UPDATE_UI(ListboxPage_Delete, ListboxWidgetsPage::OnUpdateUIDeleteButton)
 174     EVT_UPDATE_UI(ListboxPage_Change, ListboxWidgetsPage::OnUpdateUIDeleteSelButton)
 175     EVT_UPDATE_UI(ListboxPage_ChangeText, ListboxWidgetsPage::OnUpdateUIDeleteSelButton)
 176     EVT_UPDATE_UI(ListboxPage_DeleteSel, ListboxWidgetsPage::OnUpdateUIDeleteSelButton)
 177
 178     EVT_LISTBOX(ListboxPage_Listbox, ListboxWidgetsPage::OnListbox)
 179     EVT_LISTBOX_DCLICK(ListboxPage_Listbox, ListboxWidgetsPage::OnListboxDClick)
 180     EVT_CHECKLISTBOX(ListboxPage_Listbox, ListboxWidgetsPage::OnCheckListbox)
 181
 182     EVT_CHECKBOX(wxID_ANY, ListboxWidgetsPage::OnCheckOrRadioBox)
 183     EVT_RADIOBOX(wxID_ANY, ListboxWidgetsPage::OnCheckOrRadioBox)
 184 END_EVENT_TABLE()
 185
 186 // ============================================================================
 187 // implementation
 188 // ============================================================================
 189
 190 IMPLEMENT_WIDGETS_PAGE(ListboxWidgetsPage, _T("Listbox"));
 191
 192 ListboxWidgetsPage::ListboxWidgetsPage(wxNotebook *notebook,
 193                                        wxImageList *imaglist)
 194                   : WidgetsPage(notebook)
 195 {
 196     imaglist->Add(wxBitmap(listbox_xpm));
 197
 198     // init everything
 199     m_radioSelMode = (wxRadioBox *)NULL;
 200
 201     m_chkVScroll =
 202     m_chkHScroll =
 203     m_chkCheck =
 204     m_chkSort = (wxCheckBox *)NULL;
 205
 206     m_lbox = (wxListBox *)NULL;
 207     m_sizerLbox = (wxSizer *)NULL;
 208
 209     /*
 210        What we create here is a frame having 3 panes: style pane is the
 211        leftmost one, in the middle the pane with buttons allowing to perform
 212        miscellaneous listbox operations and the pane containing the listbox
 213        itself to the right
 214     */
 215     wxSizer *sizerTop = new wxBoxSizer(wxHORIZONTAL);
 216
 217     // left pane
 218     wxStaticBox *box = new wxStaticBox(this, wxID_ANY,
 219         _T("&Set listbox parameters"));
 220     wxSizer *sizerLeft = new wxStaticBoxSizer(box, wxVERTICAL);
 221
 222     static const wxString modes[] =
 223     {
 224         _T("single"),
 225         _T("extended"),
 226         _T("multiple"),
 227     };
 228
 229     m_radioSelMode = new wxRadioBox(this, wxID_ANY, _T("Selection &mode:"),
 230                                     wxDefaultPosition, wxDefaultSize,
 231                                     WXSIZEOF(modes), modes,
 232                                     1, wxRA_SPECIFY_COLS);
 233
 234     m_chkVScroll = CreateCheckBoxAndAddToSizer
 235                    (
 236                     sizerLeft,
 237                     _T("Always show &vertical scrollbar")
 238                    );
 239     m_chkHScroll = CreateCheckBoxAndAddToSizer
 240                    (
 241                     sizerLeft,
 242                     _T("Show &horizontal scrollbar")
 243                    );
 244     m_chkCheck = CreateCheckBoxAndAddToSizer(sizerLeft, _T("&Check list box"));
 245     m_chkSort = CreateCheckBoxAndAddToSizer(sizerLeft, _T("&Sort items"));
 246
 247     sizerLeft->Add(5, 5, 0, wxGROW | wxALL, 5); // spacer
 248     sizerLeft->Add(m_radioSelMode, 0, wxGROW | wxALL, 5);
 249
 250     wxButton *btn = new wxButton(this, ListboxPage_Reset, _T("&Reset"));
 251     sizerLeft->Add(btn, 0, wxALIGN_CENTRE_HORIZONTAL | wxALL, 15);
 252
 253     // middle pane
 254     wxStaticBox *box2 = new wxStaticBox(this, wxID_ANY,
 255         _T("&Change listbox contents"));
 256     wxSizer *sizerMiddle = new wxStaticBoxSizer(box2, wxVERTICAL);
 257
 258     wxSizer *sizerRow = new wxBoxSizer(wxHORIZONTAL);
 259     btn = new wxButton(this, ListboxPage_Add, _T("&Add this string"));
 260     m_textAdd = new wxTextCtrl(this, ListboxPage_AddText, _T("test item 0"));
 261     sizerRow->Add(btn, 0, wxRIGHT, 5);
 262     sizerRow->Add(m_textAdd, 1, wxLEFT, 5);
 263     sizerMiddle->Add(sizerRow, 0, wxALL | wxGROW, 5);
 264
 265     btn = new wxButton(this, ListboxPage_AddSeveral, _T("&Insert a few strings"));
 266     sizerMiddle->Add(btn, 0, wxALL | wxGROW, 5);
 267
 268     btn = new wxButton(this, ListboxPage_AddMany, _T("Add &many strings"));
 269     sizerMiddle->Add(btn, 0, wxALL | wxGROW, 5);
 270
 271     sizerRow = new wxBoxSizer(wxHORIZONTAL);
 272     btn = new wxButton(this, ListboxPage_Change, _T("C&hange current"));
 273     m_textChange = new wxTextCtrl(this, ListboxPage_ChangeText, wxEmptyString);
 274     sizerRow->Add(btn, 0, wxRIGHT, 5);
 275     sizerRow->Add(m_textChange, 1, wxLEFT, 5);
 276     sizerMiddle->Add(sizerRow, 0, wxALL | wxGROW, 5);
 277
 278     sizerRow = new wxBoxSizer(wxHORIZONTAL);
 279     btn = new wxButton(this, ListboxPage_Delete, _T("&Delete this item"));
 280     m_textDelete = new wxTextCtrl(this, ListboxPage_DeleteText, wxEmptyString);
 281     sizerRow->Add(btn, 0, wxRIGHT, 5);
 282     sizerRow->Add(m_textDelete, 1, wxLEFT, 5);
 283     sizerMiddle->Add(sizerRow, 0, wxALL | wxGROW, 5);
 284
 285     btn = new wxButton(this, ListboxPage_DeleteSel, _T("Delete &selection"));
 286     sizerMiddle->Add(btn, 0, wxALL | wxGROW, 5);
 287
 288     btn = new wxButton(this, ListboxPage_Clear, _T("&Clear"));
 289     sizerMiddle->Add(btn, 0, wxALL | wxGROW, 5);
 290
 291     // right pane
 292     wxSizer *sizerRight = new wxBoxSizer(wxVERTICAL);
 293     m_lbox = new wxListBox(this, ListboxPage_Listbox,
 294                            wxDefaultPosition, wxDefaultSize,
 295                            0, NULL,
 296                            wxLB_HSCROLL);
 297     sizerRight->Add(m_lbox, 1, wxGROW | wxALL, 5);
 298     sizerRight->SetMinSize(150, 0);
 299     m_sizerLbox = sizerRight; // save it to modify it later
 300
 301     // the 3 panes panes compose the window
 302     sizerTop->Add(sizerLeft, 0, wxGROW | (wxALL & ~wxLEFT), 10);
 303     sizerTop->Add(sizerMiddle, 1, wxGROW | wxALL, 10);
 304     sizerTop->Add(sizerRight, 1, wxGROW | (wxALL & ~wxRIGHT), 10);
 305
 306     // final initializations
 307     Reset();
 308
 309     SetSizer(sizerTop);
 310
 311     sizerTop->Fit(this);
 312 }
 313
 314 // ----------------------------------------------------------------------------
 315 // operations
 316 // ----------------------------------------------------------------------------
 317
 318 void ListboxWidgetsPage::Reset()
 319 {
 320     m_radioSelMode->SetSelection(LboxSel_Single);
 321     m_chkSort->SetValue(false);
 322     m_chkCheck->SetValue(false);
 323     m_chkHScroll->SetValue(true);
 324     m_chkVScroll->SetValue(false);
 325 }
 326
 327 void ListboxWidgetsPage::CreateLbox()
 328 {
 329     int flags = 0;
 330     switch ( m_radioSelMode->GetSelection() )
 331     {
 332         default:
 333             wxFAIL_MSG( _T("unexpected radio box selection") );
 334
 335         case LboxSel_Single:    flags |= wxLB_SINGLE; break;
 336         case LboxSel_Extended:  flags |= wxLB_EXTENDED; break;
 337         case LboxSel_Multiple:  flags |= wxLB_MULTIPLE; break;
 338     }
 339
 340     if ( m_chkVScroll->GetValue() )
 341         flags |= wxLB_ALWAYS_SB;
 342     if ( m_chkHScroll->GetValue() )
 343         flags |= wxLB_HSCROLL;
 344     if ( m_chkSort->GetValue() )
 345         flags |= wxLB_SORT;
 346
 347     wxArrayString items;
 348     if ( m_lbox )
 349     {
 350         int count = m_lbox->GetCount();
 351         for ( int n = 0; n < count; n++ )
 352         {
 353             items.Add(m_lbox->GetString(n));
 354         }
 355
 356         m_sizerLbox->Detach( m_lbox );
 357         delete m_lbox;
 358     }
 359
 360 #if wxUSE_CHECKLISTBOX
 361     if ( m_chkCheck->GetValue() )
 362     {
 363         m_lbox = new wxCheckListBox(this, ListboxPage_Listbox,
 364                                     wxDefaultPosition, wxDefaultSize,
 365                                     0, NULL,
 366                                     flags);
 367     }
 368     else // just a listbox
 369 #endif
 370     {
 371         m_lbox = new wxListBox(this, ListboxPage_Listbox,
 372                                wxDefaultPosition, wxDefaultSize,
 373                                0, NULL,
 374                                flags);
 375     }
 376
 377     m_lbox->Set(items);
 378     m_sizerLbox->Add(m_lbox, 1, wxGROW | wxALL, 5);
 379     m_sizerLbox->Layout();
 380 }
 381
 382 // ----------------------------------------------------------------------------
 383 // event handlers
 384 // ----------------------------------------------------------------------------
 385
 386 void ListboxWidgetsPage::OnButtonReset(wxCommandEvent& WXUNUSED(event))
 387 {
 388     Reset();
 389
 390     CreateLbox();
 391 }
 392
 393 void ListboxWidgetsPage::OnButtonChange(wxCommandEvent& WXUNUSED(event))
 394 {
 395     wxArrayInt selections;
 396     int count = m_lbox->GetSelections(selections);
 397     wxString s = m_textChange->GetValue();
 398     for ( int n = 0; n < count; n++ )
 399     {
 400         m_lbox->SetString(selections[n], s);
 401     }
 402 }
 403
 404 void ListboxWidgetsPage::OnButtonDelete(wxCommandEvent& WXUNUSED(event))
 405 {
 406     unsigned long n;
 407     if ( !m_textDelete->GetValue().ToULong(&n) ||
 408             (n >= (unsigned)m_lbox->GetCount()) )
 409     {
 410         return;
 411     }
 412
 413     m_lbox->Delete(n);
 414 }
 415
 416 void ListboxWidgetsPage::OnButtonDeleteSel(wxCommandEvent& WXUNUSED(event))
 417 {
 418     wxArrayInt selections;
 419     int n = m_lbox->GetSelections(selections);
 420     while ( n > 0 )
 421     {
 422         m_lbox->Delete(selections[--n]);
 423     }
 424 }
 425
 426 void ListboxWidgetsPage::OnButtonClear(wxCommandEvent& WXUNUSED(event))
 427 {
 428     m_lbox->Clear();
 429 }
 430
 431 void ListboxWidgetsPage::OnButtonAdd(wxCommandEvent& WXUNUSED(event))
 432 {
 433     static unsigned int s_item = 0;
 434
 435     wxString s = m_textAdd->GetValue();
 436     if ( !m_textAdd->IsModified() )
 437     {
 438         // update the default string
 439         m_textAdd->SetValue(wxString::Format(_T("test item %u"), ++s_item));
 440     }
 441
 442     m_lbox->Append(s);
 443 }
 444
 445 void ListboxWidgetsPage::OnButtonAddMany(wxCommandEvent& WXUNUSED(event))
 446 {
 447     // "many" means 1000 here
 448     for ( unsigned int n = 0; n < 1000; n++ )
 449     {
 450         m_lbox->Append(wxString::Format(_T("item #%u"), n));
 451     }
 452 }
 453
 454 void ListboxWidgetsPage::OnButtonAddSeveral(wxCommandEvent& WXUNUSED(event))
 455 {
 456     wxArrayString items;
 457     items.Add(_T("First"));
 458     items.Add(_T("another one"));
 459     items.Add(_T("and the last (very very very very very very very very very very long) one"));
 460     m_lbox->InsertItems(items, 0);
 461 }
 462
 463 void ListboxWidgetsPage::OnUpdateUIResetButton(wxUpdateUIEvent& event)
 464 {
 465     event.Enable( (m_radioSelMode->GetSelection() != LboxSel_Single) ||
 466                   m_chkSort->GetValue() ||
 467                   !m_chkHScroll->GetValue() ||
 468                   m_chkVScroll->GetValue() );
 469 }
 470
 471 void ListboxWidgetsPage::OnUpdateUIDeleteButton(wxUpdateUIEvent& event)
 472 {
 473     unsigned long n;
 474     event.Enable(m_textDelete->GetValue().ToULong(&n) &&
 475                     (n < (unsigned)m_lbox->GetCount()));
 476 }
 477
 478 void ListboxWidgetsPage::OnUpdateUIDeleteSelButton(wxUpdateUIEvent& event)
 479 {
 480     wxArrayInt selections;
 481     event.Enable(m_lbox->GetSelections(selections) != 0);
 482 }
 483
 484 void ListboxWidgetsPage::OnUpdateUIClearButton(wxUpdateUIEvent& event)
 485 {
 486     event.Enable(m_lbox->GetCount() != 0);
 487 }
 488
 489 void ListboxWidgetsPage::OnUpdateUIAddSeveral(wxUpdateUIEvent& event)
 490 {
 491     event.Enable(!(m_lbox->GetWindowStyle() & wxLB_SORT));
 492 }
 493
 494 void ListboxWidgetsPage::OnListbox(wxCommandEvent& event)
 495 {
 496     long sel = event.GetSelection();
 497     m_textDelete->SetValue(wxString::Format(_T("%ld"), sel));
 498
 499     if (event.IsSelection())
 500         wxLogMessage(_T("Listbox item %ld selected"), sel);
 501     else
 502         wxLogMessage(_T("Listbox item %ld deselected"), sel);
 503 }
 504
 505 void ListboxWidgetsPage::OnListboxDClick(wxCommandEvent& event)
 506 {
 507     wxLogMessage( _T("Listbox item %ld double clicked"), event.GetInt() );
 508 }
 509
 510 void ListboxWidgetsPage::OnCheckListbox(wxCommandEvent& event)
 511 {
 512     wxLogMessage( _T("Listbox item %ld toggled"), event.GetInt() );
 513 }
 514
 515 void ListboxWidgetsPage::OnCheckOrRadioBox(wxCommandEvent& WXUNUSED(event))
 516 {
 517     CreateLbox();
 518 }
 519
 520 #endif