samples/checklst/checklst.cpp

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // Name:        checklst.cpp
   3 // Purpose:     wxCheckListBox sample
   4 // Author:      Vadim Zeitlin
   5 // Modified by:
   6 // Created:     13.11.97
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) 1998 Vadim Zeitlin <zeitlin@dptmaths.ens-cachan.fr>
   9 // Licence:     wxWindows license
  10 ///////////////////////////////////////////////////////////////////////////////
  11
  12 #ifdef __GNUG__
  13     //#pragma implementation
  14 #endif
  15
  16 // For compilers that support precompilation, includes "wx.h".
  17 #include "wx/wxprec.h"
  18
  19 #ifdef __BORLANDC__
  20     #pragma hdrstop
  21 #endif
  22
  23 #ifndef WX_PRECOMP
  24 #include "wx/wx.h"
  25 #endif
  26
  27 #ifdef __WXMSW__
  28     #include  "wx/ownerdrw.h"
  29 #endif
  30
  31 #include  "wx/log.h"
  32
  33 #include  "wx/sizer.h"
  34 #include  "wx/menuitem.h"
  35 #include  "wx/checklst.h"
  36
  37 // Define a new application type
  38 class CheckListBoxApp: public wxApp
  39 {
  40 public:
  41     bool OnInit();
  42 };
  43
  44 // Define a new frame type
  45 class CheckListBoxFrame : public wxFrame
  46 {
  47 public:
  48     // ctor & dtor
  49     CheckListBoxFrame(wxFrame *frame, const wxChar *title,
  50                       int x, int y, int w, int h);
  51     virtual ~CheckListBoxFrame();
  52
  53     // notifications
  54     void OnQuit(wxCommandEvent& event);
  55     void OnAbout(wxCommandEvent& event);
  56
  57     void OnCheckFirstItem(wxCommandEvent& event);
  58     void OnUncheckFirstItem(wxCommandEvent& event);
  59     void OnToggleFirstItem(wxCommandEvent& event);
  60     void OnToggleSelection(wxCommandEvent& event);
  61     void OnAddItems(wxCommandEvent& event);
  62
  63     void OnListboxSelect(wxCommandEvent& event);
  64     void OnCheckboxToggle(wxCommandEvent& event);
  65     void OnListboxDblClick(wxCommandEvent& event);
  66
  67     void OnButtonUp(wxCommandEvent& event);
  68     void OnButtonDown(wxCommandEvent& event);
  69
  70 private:
  71     void CreateCheckListbox(long flags = 0);
  72
  73     void OnButtonMove(bool up);
  74
  75     void AdjustColour(size_t index);
  76
  77     wxPanel *m_panel;
  78
  79     wxCheckListBox *m_pListBox;
  80
  81     DECLARE_EVENT_TABLE()
  82 };
  83
  84 enum
  85 {
  86     Menu_About = 100,
  87     Menu_Quit,
  88
  89     Menu_CheckFirst,
  90     Menu_UncheckFirst,
  91     Menu_ToggleFirst,
  92     Menu_Selection,
  93     Menu_AddItems,
  94
  95     Control_First = 1000,
  96     Control_Listbox,
  97     Btn_Up,
  98     Btn_Down
  99 };
 100
 101 BEGIN_EVENT_TABLE(CheckListBoxFrame, wxFrame)
 102     EVT_MENU(Menu_About, CheckListBoxFrame::OnAbout)
 103     EVT_MENU(Menu_Quit, CheckListBoxFrame::OnQuit)
 104
 105     EVT_MENU(Menu_CheckFirst, CheckListBoxFrame::OnCheckFirstItem)
 106     EVT_MENU(Menu_UncheckFirst, CheckListBoxFrame::OnUncheckFirstItem)
 107     EVT_MENU(Menu_ToggleFirst, CheckListBoxFrame::OnToggleFirstItem)
 108     EVT_MENU(Menu_Selection, CheckListBoxFrame::OnToggleSelection)
 109     EVT_MENU(Menu_AddItems, CheckListBoxFrame::OnAddItems)
 110
 111     EVT_LISTBOX(Control_Listbox, CheckListBoxFrame::OnListboxSelect)
 112     EVT_CHECKLISTBOX(Control_Listbox, CheckListBoxFrame::OnCheckboxToggle)
 113     EVT_LISTBOX_DCLICK(Control_Listbox, CheckListBoxFrame::OnListboxDblClick)
 114
 115     EVT_BUTTON(Btn_Up, CheckListBoxFrame::OnButtonUp)
 116     EVT_BUTTON(Btn_Down, CheckListBoxFrame::OnButtonDown)
 117 END_EVENT_TABLE()
 118
 119 IMPLEMENT_APP(CheckListBoxApp);
 120
 121 // init our app: create windows
 122 bool CheckListBoxApp::OnInit(void)
 123 {
 124     CheckListBoxFrame *pFrame = new CheckListBoxFrame
 125                                     (
 126                                      NULL,
 127                                      _T("wxWidgets Checklistbox Sample"),
 128                                      50, 50, 480, 320
 129                                     );
 130     SetTopWindow(pFrame);
 131
 132     return true;
 133 }
 134
 135 // main frame constructor
 136 CheckListBoxFrame::CheckListBoxFrame(wxFrame *frame,
 137                                      const wxChar *title,
 138                                      int x, int y, int w, int h)
 139                  : wxFrame(frame, wxID_ANY, title, wxPoint(x, y), wxSize(w, h))
 140 {
 141     // create the status line
 142     const int widths[] = { -1, 60 };
 143     CreateStatusBar(2);
 144     SetStatusWidths(2, widths);
 145     wxLogStatus(this, _T("no selection"));
 146
 147     // Make a menubar
 148     // --------------
 149
 150     // file submenu
 151     wxMenu *menuFile = new wxMenu;
 152     menuFile->Append(Menu_About, _T("&About...\tF1"));
 153     menuFile->AppendSeparator();
 154     menuFile->Append(Menu_Quit, _T("E&xit\tAlt-X"));
 155
 156     // listbox submenu
 157     wxMenu *menuList = new wxMenu;
 158     menuList->Append(Menu_CheckFirst, _T("Check the first item\tCtrl-C"));
 159     menuList->Append(Menu_UncheckFirst, _T("Uncheck the first item\tCtrl-U"));
 160     menuList->Append(Menu_ToggleFirst, _T("Toggle the first item\tCtrl-T"));
 161     menuList->AppendSeparator();
 162     menuList->AppendCheckItem(Menu_AddItems, _T("Add more items\tCtrl-A"));
 163     menuList->AppendSeparator();
 164     menuList->AppendCheckItem(Menu_Selection, _T("Multiple selection\tCtrl-M"));
 165
 166     // put it all together
 167     wxMenuBar *menu_bar = new wxMenuBar;
 168     menu_bar->Append(menuFile, _T("&File"));
 169     menu_bar->Append(menuList, _T("&List"));
 170     SetMenuBar(menu_bar);
 171
 172     // make a panel with some controls
 173     m_panel = new wxPanel(this, wxID_ANY, wxPoint(0, 0),
 174                           wxSize(400, 200), wxTAB_TRAVERSAL);
 175
 176     CreateCheckListbox();
 177
 178     // create buttons for moving the items around
 179     wxButton *button1 = new wxButton(m_panel, Btn_Up, _T("   &Up  "), wxPoint(420, 90));
 180     wxButton *button2 = new wxButton(m_panel, Btn_Down, _T("&Down"), wxPoint(420, 120));
 181
 182
 183     wxBoxSizer *mainsizer = new wxBoxSizer( wxVERTICAL );
 184
 185     mainsizer->Add( m_pListBox, 1, wxGROW|wxALL, 10 );
 186
 187     wxBoxSizer *bottomsizer = new wxBoxSizer( wxHORIZONTAL );
 188
 189     bottomsizer->Add( button1, 0, wxALL, 10 );
 190     bottomsizer->Add( button2, 0, wxALL, 10 );
 191
 192     mainsizer->Add( bottomsizer, 0, wxCENTER );
 193
 194     // tell frame to make use of sizer (or constraints, if any)
 195     m_panel->SetAutoLayout( true );
 196     m_panel->SetSizer( mainsizer );
 197
 198     // don't allow frame to get smaller than what the sizers tell ye
 199     mainsizer->SetSizeHints( this );
 200
 201     Show(true);
 202 }
 203
 204 void CheckListBoxFrame::CreateCheckListbox(long flags)
 205 {
 206     // check list box
 207     static const wxChar *aszChoices[] =
 208     {
 209         _T("Zeroth"),
 210         _T("First"), _T("Second"), _T("Third"),
 211         _T("Fourth"), _T("Fifth"), _T("Sixth"),
 212         _T("Seventh"), _T("Eighth"), _T("Nineth")
 213     };
 214
 215     wxString *astrChoices = new wxString[WXSIZEOF(aszChoices)];
 216     unsigned int ui;
 217     for ( ui = 0; ui < WXSIZEOF(aszChoices); ui++ )
 218         astrChoices[ui] = aszChoices[ui];
 219
 220     m_pListBox = new wxCheckListBox
 221         (
 222          m_panel,               // parent
 223          Control_Listbox,       // control id
 224          wxPoint(10, 10),       // listbox poistion
 225          wxSize(400, 100),      // listbox size
 226          WXSIZEOF(aszChoices),  // number of strings
 227          astrChoices,           // array of strings
 228          flags
 229         );
 230
 231     //m_pListBox->SetBackgroundColour(*wxGREEN);
 232
 233     delete [] astrChoices;
 234
 235     // set grey background for every second entry
 236     for ( ui = 0; ui < WXSIZEOF(aszChoices); ui += 2 ) {
 237         AdjustColour(ui);
 238     }
 239
 240     m_pListBox->Check(2);
 241     m_pListBox->Select(3);
 242 }
 243
 244 CheckListBoxFrame::~CheckListBoxFrame()
 245 {
 246 }
 247
 248 void CheckListBoxFrame::OnQuit(wxCommandEvent& WXUNUSED(event))
 249 {
 250     Close(true);
 251 }
 252
 253 void CheckListBoxFrame::OnAbout(wxCommandEvent& WXUNUSED(event))
 254 {
 255     wxMessageBox(wxT("Demo of wxCheckListBox control\n© Vadim Zeitlin 1998-2002"),
 256                  wxT("About wxCheckListBox"),
 257                  wxICON_INFORMATION, this);
 258 }
 259
 260 void CheckListBoxFrame::OnCheckFirstItem(wxCommandEvent& WXUNUSED(event))
 261 {
 262     if ( !m_pListBox->IsEmpty() )
 263         m_pListBox->Check(0);
 264 }
 265
 266 void CheckListBoxFrame::OnUncheckFirstItem(wxCommandEvent& WXUNUSED(event))
 267 {
 268     if ( !m_pListBox->IsEmpty() )
 269         m_pListBox->Check(0, false);
 270 }
 271
 272 void CheckListBoxFrame::OnToggleFirstItem(wxCommandEvent& WXUNUSED(event))
 273 {
 274     if ( !m_pListBox->IsEmpty() )
 275         m_pListBox->Check(0, !m_pListBox->IsChecked(0));
 276 }
 277
 278 void CheckListBoxFrame::OnAddItems(wxCommandEvent& WXUNUSED(event))
 279 {
 280     static size_t s_nItem = 0;
 281     wxArrayString items;
 282     items.Add(wxString::Format(_T("New item %lu"), (unsigned long)++s_nItem));
 283     items.Add(wxString::Format(_T("New item %lu"), (unsigned long)++s_nItem));
 284     items.Add(wxString::Format(_T("New item %lu"), (unsigned long)++s_nItem));
 285
 286     m_pListBox->InsertItems(items, 0);//m_pListBox->GetCount());
 287 }
 288
 289 void CheckListBoxFrame::OnToggleSelection(wxCommandEvent& event)
 290 {
 291     wxSizer *sizer = m_panel->GetSizer();
 292
 293     sizer->Detach( m_pListBox );
 294     delete m_pListBox;
 295
 296     CreateCheckListbox(event.IsChecked() ? wxLB_EXTENDED : 0);
 297
 298     sizer->Insert(0, m_pListBox, 1, wxGROW | wxALL, 10);
 299
 300     m_panel->Layout();
 301 }
 302
 303 void CheckListBoxFrame::OnListboxSelect(wxCommandEvent& event)
 304 {
 305     int nSel = event.GetSelection();
 306     wxLogStatus(this, wxT("Item %d selected (%schecked)"), nSel,
 307                       m_pListBox->IsChecked(nSel) ? wxT("") : wxT("not "));
 308 }
 309
 310 void CheckListBoxFrame::OnListboxDblClick(wxCommandEvent& WXUNUSED(event))
 311 {
 312     int selection = -1;
 313     if(m_pListBox->GetWindowStyle() & wxLB_EXTENDED)
 314     {
 315         wxArrayInt list;
 316         m_pListBox->GetSelections(list);
 317         if(list.Count()==1)
 318         {
 319             selection = list.Item(0);
 320         }
 321     }
 322     else
 323     {
 324         selection = m_pListBox->GetSelection();
 325     }
 326
 327     wxString strSelection;
 328     if ( selection != -1 )
 329     {
 330         strSelection.Printf(wxT("Item %d double clicked"), selection);
 331     }
 332     else
 333     {
 334         strSelection = wxT("List double clicked in multiple selection mode");
 335     }
 336     wxMessageDialog dialog(this, strSelection, wxT("wxCheckListBox message"), wxICON_INFORMATION);
 337     dialog.ShowModal();
 338 }
 339
 340 void CheckListBoxFrame::OnCheckboxToggle(wxCommandEvent& event)
 341 {
 342     unsigned int nItem = event.GetInt();
 343
 344     wxLogStatus(this, wxT("item %d was %schecked"), nItem,
 345                       m_pListBox->IsChecked(nItem) ? wxT("") : wxT("un"));
 346 }
 347
 348 void CheckListBoxFrame::OnButtonUp(wxCommandEvent& WXUNUSED(event))
 349 {
 350     OnButtonMove(true);
 351 }
 352
 353 void CheckListBoxFrame::OnButtonDown(wxCommandEvent& WXUNUSED(event))
 354 {
 355     OnButtonMove(false);
 356 }
 357
 358 void CheckListBoxFrame::OnButtonMove(bool up)
 359 {
 360     int selection = -1;
 361     if(m_pListBox->GetWindowStyle() & wxLB_EXTENDED)
 362     {
 363         wxArrayInt list;
 364         m_pListBox->GetSelections(list);
 365         if(list.Count()==1)
 366         {
 367             selection = list.Item(0);
 368         }
 369     }
 370     else
 371     {
 372         selection = m_pListBox->GetSelection();
 373     }
 374     if ( selection != -1 )
 375     {
 376         wxString label = m_pListBox->GetString(selection);
 377
 378         int positionNew = up ? selection - 1 : selection + 2;
 379         if ( positionNew < 0 || positionNew > m_pListBox->GetCount() )
 380         {
 381             wxLogStatus(this, wxT("Can't move this item %s"), up ? wxT("up") : wxT("down"));
 382         }
 383         else
 384         {
 385             bool wasChecked = m_pListBox->IsChecked(selection);
 386
 387             int positionOld = up ? selection + 1 : selection;
 388
 389             // insert the item
 390             m_pListBox->InsertItems(1, &label, positionNew);
 391
 392             // and delete the old one
 393             m_pListBox->Delete(positionOld);
 394
 395             int selectionNew = up ? positionNew : positionNew - 1;
 396             m_pListBox->Check(selectionNew, wasChecked);
 397             m_pListBox->SetSelection(selectionNew);
 398
 399             AdjustColour(selection);
 400             AdjustColour(selectionNew);
 401
 402             wxLogStatus(this, wxT("Item moved %s"), up ? wxT("up") : wxT("down"));
 403         }
 404     }
 405     else
 406     {
 407         wxLogStatus(this, wxT("Please select single item"));
 408     }
 409 }
 410
 411 // not implemented in ports other than (native) MSW yet
 412 #if defined(__WXMSW__) && !defined(__WXUNIVERSAL__)
 413 void CheckListBoxFrame::AdjustColour(size_t index)
 414 {
 415     // even items have grey backround, odd ones - white
 416     unsigned char c = index % 2 ? 255 : 200;
 417     m_pListBox->GetItem(index)->SetBackgroundColour(wxColor(c, c, c));
 418 }
 419 #else
 420 void CheckListBoxFrame::AdjustColour(size_t WXUNUSED(index))
 421 {
 422 }
 423 #endif // wxMSW