samples/treectrl/treetest.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        treetest.cpp
   3 // Purpose:     wxTreeCtrl sample
   4 // Author:      Julian Smart
   5 // Modified by:
   6 // Created:     04/01/98
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Julian Smart
   9 // Licence:     wxWindows license
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 #ifdef __GNUG__
  13   #pragma implementation
  14   #pragma interface
  15 #endif
  16
  17 // For compilers that support precompilation, includes "wx/wx.h".
  18 #include "wx/wxprec.h"
  19
  20 #ifdef __BORLANDC__
  21   #pragma hdrstop
  22 #endif
  23
  24 #ifndef WX_PRECOMP
  25   #include "wx/wx.h"
  26   #include "wx/log.h"
  27 #endif
  28
  29 #include "wx/colordlg.h"
  30
  31 #include "wx/image.h"
  32 #include "wx/imaglist.h"
  33 #include "wx/treectrl.h"
  34
  35 #include "math.h"
  36
  37 #ifdef __WIN32__
  38     // this is not supported by native control
  39     #define NO_VARIABLE_HEIGHT
  40 #endif
  41
  42 #include "treetest.h"
  43
  44 #include "icon1.xpm"
  45 #include "icon2.xpm"
  46 #include "icon3.xpm"
  47 #include "icon4.xpm"
  48 #include "icon5.xpm"
  49
  50 #if defined(__WXGTK__) || defined(__WXX11__) || defined(__WXMOTIF__) || defined(__WXMAC__) || defined(__WXMGL__)
  51 #include "mondrian.xpm"
  52 #endif
  53
  54
  55 // verify that the item is ok and insult the user if it is not
  56 #define CHECK_ITEM( item ) if ( !item.IsOk() ) {                                 \
  57                              wxMessageBox(wxT("Please select some item first!"), \
  58                                           wxT("Tree sample error"),              \
  59                                           wxOK | wxICON_EXCLAMATION,             \
  60                                           this);                                 \
  61                              return;                                             \
  62                            }
  63
  64 #define MENU_LINK(name) EVT_MENU(TreeTest_##name, MyFrame::On##name)
  65
  66 BEGIN_EVENT_TABLE(MyFrame, wxFrame)
  67     EVT_IDLE(MyFrame::OnIdle)
  68     EVT_SIZE(MyFrame::OnSize)
  69
  70     MENU_LINK(Quit)
  71     MENU_LINK(About)
  72
  73     MENU_LINK(TogButtons)
  74     MENU_LINK(TogTwist)
  75     MENU_LINK(TogLines)
  76     MENU_LINK(TogEdit)
  77     MENU_LINK(TogHideRoot)
  78     MENU_LINK(TogRootLines)
  79     MENU_LINK(TogBorder)
  80     MENU_LINK(TogFullHighlight)
  81     MENU_LINK(SetFgColour)
  82     MENU_LINK(SetBgColour)
  83     MENU_LINK(ResetStyle)
  84
  85     MENU_LINK(Dump)
  86 #ifndef NO_MULTIPLE_SELECTION
  87     MENU_LINK(DumpSelected)
  88     MENU_LINK(Select)
  89     MENU_LINK(Unselect)
  90     MENU_LINK(ToggleSel)
  91 #endif // NO_MULTIPLE_SELECTION
  92     MENU_LINK(Rename)
  93     MENU_LINK(Count)
  94     MENU_LINK(CountRec)
  95     MENU_LINK(Sort)
  96     MENU_LINK(SortRev)
  97     MENU_LINK(SetBold)
  98     MENU_LINK(ClearBold)
  99     MENU_LINK(Delete)
 100     MENU_LINK(DeleteChildren)
 101     MENU_LINK(DeleteAll)
 102     MENU_LINK(Recreate)
 103     MENU_LINK(ToggleImages)
 104     MENU_LINK(ToggleButtons)
 105     MENU_LINK(SetImageSize)
 106     MENU_LINK(CollapseAndReset)
 107     MENU_LINK(EnsureVisible)
 108     MENU_LINK(AddItem)
 109     MENU_LINK(InsertItem)
 110     MENU_LINK(IncIndent)
 111     MENU_LINK(DecIndent)
 112     MENU_LINK(IncSpacing)
 113     MENU_LINK(DecSpacing)
 114     MENU_LINK(ToggleIcon)
 115 #undef MENU_LINK
 116
 117 END_EVENT_TABLE()
 118
 119 #if USE_GENERIC_TREECTRL
 120 BEGIN_EVENT_TABLE(MyTreeCtrl, wxGenericTreeCtrl)
 121 #else
 122 BEGIN_EVENT_TABLE(MyTreeCtrl, wxTreeCtrl)
 123 #endif
 124     EVT_TREE_BEGIN_DRAG(TreeTest_Ctrl, MyTreeCtrl::OnBeginDrag)
 125     EVT_TREE_BEGIN_RDRAG(TreeTest_Ctrl, MyTreeCtrl::OnBeginRDrag)
 126     EVT_TREE_END_DRAG(TreeTest_Ctrl, MyTreeCtrl::OnEndDrag)
 127     EVT_TREE_BEGIN_LABEL_EDIT(TreeTest_Ctrl, MyTreeCtrl::OnBeginLabelEdit)
 128     EVT_TREE_END_LABEL_EDIT(TreeTest_Ctrl, MyTreeCtrl::OnEndLabelEdit)
 129     EVT_TREE_DELETE_ITEM(TreeTest_Ctrl, MyTreeCtrl::OnDeleteItem)
 130 #if 0       // there are so many of those that logging them causes flicker
 131     EVT_TREE_GET_INFO(TreeTest_Ctrl, MyTreeCtrl::OnGetInfo)
 132 #endif
 133     EVT_TREE_SET_INFO(TreeTest_Ctrl, MyTreeCtrl::OnSetInfo)
 134     EVT_TREE_ITEM_EXPANDED(TreeTest_Ctrl, MyTreeCtrl::OnItemExpanded)
 135     EVT_TREE_ITEM_EXPANDING(TreeTest_Ctrl, MyTreeCtrl::OnItemExpanding)
 136     EVT_TREE_ITEM_COLLAPSED(TreeTest_Ctrl, MyTreeCtrl::OnItemCollapsed)
 137     EVT_TREE_ITEM_COLLAPSING(TreeTest_Ctrl, MyTreeCtrl::OnItemCollapsing)
 138     //EVT_TREE_ITEM_RIGHT_CLICK(TreeTest_Ctrl, MyTreeCtrl::OnItemRightClick)
 139
 140     EVT_CONTEXT_MENU(MyTreeCtrl::OnContextMenu)
 141     EVT_TREE_SEL_CHANGED(TreeTest_Ctrl, MyTreeCtrl::OnSelChanged)
 142     EVT_TREE_SEL_CHANGING(TreeTest_Ctrl, MyTreeCtrl::OnSelChanging)
 143     EVT_TREE_KEY_DOWN(TreeTest_Ctrl, MyTreeCtrl::OnTreeKeyDown)
 144     EVT_TREE_ITEM_ACTIVATED(TreeTest_Ctrl, MyTreeCtrl::OnItemActivated)
 145     EVT_RIGHT_DCLICK(MyTreeCtrl::OnRMouseDClick)
 146 END_EVENT_TABLE()
 147
 148 IMPLEMENT_APP(MyApp)
 149
 150 bool MyApp::OnInit()
 151 {
 152     // Create the main frame window
 153     MyFrame *frame = new MyFrame(wxT("wxTreeCtrl Test"), 50, 50, 450, 600);
 154
 155     // Show the frame
 156     frame->Show(TRUE);
 157     SetTopWindow(frame);
 158
 159     return TRUE;
 160 }
 161
 162
 163 // My frame constructor
 164 MyFrame::MyFrame(const wxString& title, int x, int y, int w, int h)
 165        : wxFrame((wxFrame *)NULL, -1, title, wxPoint(x, y), wxSize(w, h)),
 166          m_treeCtrl(NULL), m_textCtrl(NULL)
 167 {
 168     // This reduces flicker effects - even better would be to define
 169     // OnEraseBackground to do nothing. When the tree control's scrollbars are
 170     // show or hidden, the frame is sent a background erase event.
 171     SetBackgroundColour(wxColour(255, 255, 255));
 172
 173     // Give it an icon
 174     SetIcon(wxICON(mondrian));
 175
 176 #if wxUSE_MENUS
 177     // Make a menubar
 178     wxMenu *file_menu = new wxMenu,
 179            *style_menu = new wxMenu,
 180            *tree_menu = new wxMenu,
 181            *item_menu = new wxMenu;
 182
 183     file_menu->Append(TreeTest_About, wxT("&About..."));
 184     file_menu->AppendSeparator();
 185     file_menu->Append(TreeTest_Quit, wxT("E&xit\tAlt-X"));
 186
 187     style_menu->Append(TreeTest_TogButtons, wxT("Toggle &normal buttons"), wxT(""), TRUE);
 188     style_menu->Append(TreeTest_TogTwist, wxT("Toggle &twister buttons"), wxT(""), TRUE);
 189     style_menu->Append(TreeTest_ToggleButtons, wxT("Toggle image &buttons"), wxT(""), TRUE);
 190     style_menu->AppendSeparator();
 191     style_menu->Append(TreeTest_TogLines, wxT("Toggle &connecting lines"), wxT(""), TRUE);
 192     style_menu->Append(TreeTest_TogRootLines, wxT("Toggle &lines at root"), wxT(""), TRUE);
 193     style_menu->Append(TreeTest_TogHideRoot, wxT("Toggle &hidden root"), wxT(""), TRUE);
 194     style_menu->Append(TreeTest_TogBorder, wxT("Toggle &item border"), wxT(""), TRUE);
 195     style_menu->Append(TreeTest_TogFullHighlight, wxT("Toggle &full row highlight"), wxT(""), TRUE);
 196     style_menu->Append(TreeTest_TogEdit, wxT("Toggle &edit mode"), wxT(""), TRUE);
 197 #ifndef NO_MULTIPLE_SELECTION
 198     style_menu->Append(TreeTest_ToggleSel, wxT("Toggle &selection mode"), wxT(""), TRUE);
 199 #endif // NO_MULTIPLE_SELECTION
 200     style_menu->Append(TreeTest_ToggleImages, wxT("Toggle show ima&ges"), wxT(""), TRUE);
 201     style_menu->Append(TreeTest_SetImageSize, wxT("Set image si&ze..."));
 202     style_menu->AppendSeparator();
 203     style_menu->Append(TreeTest_SetFgColour, wxT("Set &foreground colour..."));
 204     style_menu->Append(TreeTest_SetBgColour, wxT("Set &background colour..."));
 205     style_menu->AppendSeparator();
 206     style_menu->Append(TreeTest_ResetStyle, wxT("&Reset to default\tF10"));
 207
 208     tree_menu->Append(TreeTest_Recreate, wxT("&Recreate the tree"));
 209     tree_menu->Append(TreeTest_CollapseAndReset, wxT("C&ollapse and reset"));
 210     tree_menu->AppendSeparator();
 211     tree_menu->Append(TreeTest_AddItem, wxT("Append a &new item"));
 212     tree_menu->Append(TreeTest_InsertItem, wxT("&Insert a new item"));
 213     tree_menu->Append(TreeTest_Delete, wxT("&Delete this item"));
 214     tree_menu->Append(TreeTest_DeleteChildren, wxT("Delete &children"));
 215     tree_menu->Append(TreeTest_DeleteAll, wxT("Delete &all items"));
 216     tree_menu->AppendSeparator();
 217     tree_menu->Append(TreeTest_Count, wxT("Count children of current item"));
 218     tree_menu->Append(TreeTest_CountRec, wxT("Recursively count children of current item"));
 219     tree_menu->AppendSeparator();
 220     tree_menu->Append(TreeTest_Sort, wxT("Sort children of current item"));
 221     tree_menu->Append(TreeTest_SortRev, wxT("Sort in reversed order"));
 222     tree_menu->AppendSeparator();
 223     tree_menu->Append(TreeTest_EnsureVisible, wxT("Make the last item &visible"));
 224     tree_menu->AppendSeparator();
 225     tree_menu->Append(TreeTest_IncIndent, wxT("Add 5 points to indentation\tAlt-I"));
 226     tree_menu->Append(TreeTest_DecIndent, wxT("Reduce indentation by 5 points\tAlt-R"));
 227     tree_menu->AppendSeparator();
 228     tree_menu->Append(TreeTest_IncSpacing, wxT("Add 5 points to spacing\tCtrl-I"));
 229     tree_menu->Append(TreeTest_DecSpacing, wxT("Reduce spacing by 5 points\tCtrl-R"));
 230
 231     item_menu->Append(TreeTest_Dump, wxT("&Dump item children"));
 232     item_menu->Append(TreeTest_Rename, wxT("&Rename item..."));
 233
 234     item_menu->AppendSeparator();
 235     item_menu->Append(TreeTest_SetBold, wxT("Make item &bold"));
 236     item_menu->Append(TreeTest_ClearBold, wxT("Make item &not bold"));
 237     item_menu->AppendSeparator();
 238     item_menu->Append(TreeTest_ToggleIcon, wxT("Toggle the item's &icon"));
 239
 240 #ifndef NO_MULTIPLE_SELECTION
 241     item_menu->AppendSeparator();
 242     item_menu->Append(TreeTest_DumpSelected, wxT("Dump selected items\tAlt-D"));
 243     item_menu->Append(TreeTest_Select, wxT("Select current item\tAlt-S"));
 244     item_menu->Append(TreeTest_Unselect, wxT("Unselect everything\tAlt-U"));
 245 #endif // NO_MULTIPLE_SELECTION
 246
 247     wxMenuBar *menu_bar = new wxMenuBar;
 248     menu_bar->Append(file_menu, wxT("&File"));
 249     menu_bar->Append(style_menu, wxT("&Style"));
 250     menu_bar->Append(tree_menu, wxT("&Tree"));
 251     menu_bar->Append(item_menu, wxT("&Item"));
 252     SetMenuBar(menu_bar);
 253 #endif // wxUSE_MENUS
 254
 255     // create the controls
 256     m_textCtrl = new wxTextCtrl(this, -1, wxT(""),
 257                                 wxDefaultPosition, wxDefaultSize,
 258                                 wxTE_MULTILINE | wxSUNKEN_BORDER);
 259
 260     CreateTreeWithDefStyle();
 261
 262     menu_bar->Check(TreeTest_ToggleImages, TRUE);
 263
 264 #if wxUSE_STATUSBAR
 265     // create a status bar
 266     CreateStatusBar(2);
 267 #endif // wxUSE_STATUSBAR
 268
 269 #ifdef __WXMOTIF__
 270     // For some reason, we get a memcpy crash in wxLogStream::DoLogStream
 271     // on gcc/wxMotif, if we use wxLogTextCtl. Maybe it's just gcc?
 272     delete wxLog::SetActiveTarget(new wxLogStderr);
 273 #else
 274     // set our text control as the log target
 275     wxLogTextCtrl *logWindow = new wxLogTextCtrl(m_textCtrl);
 276     delete wxLog::SetActiveTarget(logWindow);
 277 #endif
 278 }
 279
 280 MyFrame::~MyFrame()
 281 {
 282     delete wxLog::SetActiveTarget(NULL);
 283 }
 284
 285 void MyFrame::CreateTreeWithDefStyle()
 286 {
 287     long style = wxTR_DEFAULT_STYLE |
 288 #ifndef NO_VARIABLE_HEIGHT
 289                  wxTR_HAS_VARIABLE_ROW_HEIGHT |
 290 #endif
 291                  wxTR_EDIT_LABELS;
 292
 293     CreateTree(style | wxSUNKEN_BORDER);
 294
 295     // as we don't know what wxTR_DEFAULT_STYLE could contain, test for
 296     // everything
 297     wxMenuBar *mbar = GetMenuBar();
 298     mbar->Check(TreeTest_TogButtons, (style & wxTR_HAS_BUTTONS) != 0);
 299     mbar->Check(TreeTest_TogButtons, (style & wxTR_TWIST_BUTTONS) != 0);
 300     mbar->Check(TreeTest_TogLines, (style & wxTR_NO_LINES) == 0);
 301     mbar->Check(TreeTest_TogRootLines, (style & wxTR_LINES_AT_ROOT) != 0);
 302     mbar->Check(TreeTest_TogHideRoot, (style & wxTR_HIDE_ROOT) != 0);
 303     mbar->Check(TreeTest_TogEdit, (style & wxTR_EDIT_LABELS) != 0);
 304     mbar->Check(TreeTest_TogBorder, (style & wxTR_ROW_LINES) != 0);
 305     mbar->Check(TreeTest_TogFullHighlight, (style & wxTR_FULL_ROW_HIGHLIGHT) != 0);
 306 }
 307
 308 void MyFrame::CreateTree(long style)
 309 {
 310     m_treeCtrl = new MyTreeCtrl(this, TreeTest_Ctrl,
 311                                 wxDefaultPosition, wxDefaultSize,
 312                                 style);
 313     Resize();
 314 }
 315
 316 void MyFrame::TogStyle(int id, long flag)
 317 {
 318     long style = m_treeCtrl->GetWindowStyle() ^ flag;
 319
 320     // most treectrl styles can't be changed on the fly using the native
 321     // control and the tree must be recreated
 322 #ifndef __WXMSW__
 323     m_treeCtrl->SetWindowStyle(style);
 324 #else // MSW
 325     delete m_treeCtrl;
 326     CreateTree(style);
 327 #endif // !MSW/MSW
 328
 329     GetMenuBar()->Check(id, (style & flag) != 0);
 330 }
 331
 332 void MyFrame::OnIdle(wxIdleEvent& event)
 333 {
 334 #if wxUSE_STATUSBAR
 335     if ( m_treeCtrl )
 336     {
 337         wxTreeItemId idRoot = m_treeCtrl->GetRootItem();
 338
 339         SetStatusText(wxString::Format
 340                       (
 341                         _T("Root/last item is %svisible/%svisible"),
 342                         m_treeCtrl->IsVisible(idRoot) ? _T("") : _T("not "),
 343                         m_treeCtrl->IsVisible(m_treeCtrl->GetLastChild(idRoot))
 344                             ? _T("") : _T("not ")
 345                       ), 1);
 346     }
 347 #endif // wxUSE_STATUSBAR
 348
 349     event.Skip();
 350 }
 351
 352 void MyFrame::OnSize(wxSizeEvent& event)
 353 {
 354     if ( m_treeCtrl && m_textCtrl )
 355     {
 356         Resize();
 357     }
 358
 359     event.Skip();
 360 }
 361
 362 void MyFrame::Resize()
 363 {
 364     wxSize size = GetClientSize();
 365     m_treeCtrl->SetSize(0, 0, size.x, 2*size.y/3);
 366     m_textCtrl->SetSize(0, 2*size.y/3, size.x, size.y/3);
 367 }
 368
 369 void MyFrame::OnQuit(wxCommandEvent& WXUNUSED(event))
 370 {
 371     Close(TRUE);
 372 }
 373
 374 void MyFrame::OnAbout(wxCommandEvent& WXUNUSED(event))
 375 {
 376     wxMessageBox(wxT("Tree test sample\n")
 377                  wxT("(c) Julian Smart 1997, Vadim Zeitlin 1998"),
 378                  wxT("About tree test"),
 379                  wxOK | wxICON_INFORMATION, this);
 380 }
 381
 382 void MyFrame::OnRename(wxCommandEvent& WXUNUSED(event))
 383 {
 384     wxTreeItemId item = m_treeCtrl->GetSelection();
 385
 386     CHECK_ITEM( item );
 387
 388     // old code - now we edit in place
 389 #if 0
 390     static wxString s_text;
 391     s_text = wxGetTextFromUser(wxT("New name: "), wxT("Tree sample question"),
 392             s_text, this);
 393     if ( !s_text.IsEmpty() )
 394     {
 395         m_treeCtrl->SetItemText(item, s_text);
 396     }
 397 #endif // 0
 398
 399     // TODO demonstrate creating a custom edit control...
 400     (void)m_treeCtrl->EditLabel(item);
 401 }
 402
 403 void MyFrame::OnCount(wxCommandEvent& WXUNUSED(event))
 404 {
 405     wxTreeItemId item = m_treeCtrl->GetSelection();
 406
 407     CHECK_ITEM( item );
 408
 409     int i = m_treeCtrl->GetChildrenCount( item, FALSE );
 410
 411     wxLogMessage(wxT("%d children"), i);
 412 }
 413
 414 void MyFrame::OnCountRec(wxCommandEvent& WXUNUSED(event))
 415 {
 416     wxTreeItemId item = m_treeCtrl->GetSelection();
 417
 418     CHECK_ITEM( item );
 419
 420     int i = m_treeCtrl->GetChildrenCount( item );
 421
 422     wxLogMessage(wxT("%d children"), i);
 423 }
 424
 425 void MyFrame::DoSort(bool reverse)
 426 {
 427     wxTreeItemId item = m_treeCtrl->GetSelection();
 428
 429     CHECK_ITEM( item );
 430
 431     m_treeCtrl->DoSortChildren(item, reverse);
 432 }
 433
 434 void MyFrame::OnDump(wxCommandEvent& WXUNUSED(event))
 435 {
 436     wxTreeItemId root = m_treeCtrl->GetSelection();
 437
 438     CHECK_ITEM( root );
 439
 440     m_treeCtrl->GetItemsRecursively(root);
 441 }
 442
 443 #ifndef NO_MULTIPLE_SELECTION
 444
 445 void MyFrame::OnToggleSel(wxCommandEvent& event)
 446 {
 447     TogStyle(event.GetId(), wxTR_MULTIPLE);
 448 }
 449
 450 void MyFrame::OnDumpSelected(wxCommandEvent& WXUNUSED(event))
 451 {
 452     wxArrayTreeItemIds array;
 453
 454     size_t count = m_treeCtrl->GetSelections(array);
 455     wxLogMessage(wxT("%u items selected"), count);
 456
 457     for ( size_t n = 0; n < count; n++ )
 458     {
 459         wxLogMessage(wxT("\t%s"), m_treeCtrl->GetItemText(array.Item(n)).c_str());
 460     }
 461 }
 462
 463 void MyFrame::OnSelect(wxCommandEvent& WXUNUSED(event))
 464 {
 465     m_treeCtrl->SelectItem(m_treeCtrl->GetSelection());
 466 }
 467
 468 void MyFrame::OnUnselect(wxCommandEvent& WXUNUSED(event))
 469 {
 470     m_treeCtrl->UnselectAll();
 471 }
 472
 473 #endif // NO_MULTIPLE_SELECTION
 474
 475 void MyFrame::DoSetBold(bool bold)
 476 {
 477     wxTreeItemId item = m_treeCtrl->GetSelection();
 478
 479     CHECK_ITEM( item );
 480
 481     m_treeCtrl->SetItemBold(item, bold);
 482 }
 483
 484 void MyFrame::OnDelete(wxCommandEvent& WXUNUSED(event))
 485 {
 486     wxTreeItemId item = m_treeCtrl->GetSelection();
 487
 488     CHECK_ITEM( item );
 489
 490     m_treeCtrl->Delete(item);
 491 }
 492
 493 void MyFrame::OnDeleteChildren(wxCommandEvent& WXUNUSED(event))
 494 {
 495     wxTreeItemId item = m_treeCtrl->GetSelection();
 496
 497     CHECK_ITEM( item );
 498
 499     m_treeCtrl->DeleteChildren(item);
 500 }
 501
 502 void MyFrame::OnDeleteAll(wxCommandEvent& WXUNUSED(event))
 503 {
 504     m_treeCtrl->DeleteAllItems();
 505 }
 506
 507 void MyFrame::OnRecreate(wxCommandEvent& event)
 508 {
 509     OnDeleteAll(event);
 510     m_treeCtrl->AddTestItemsToTree(5, 2);
 511 }
 512
 513 void MyFrame::OnSetImageSize(wxCommandEvent& WXUNUSED(event))
 514 {
 515     int size = wxGetNumberFromUser(wxT("Enter the size for the images to use"),
 516                                     wxT("Size: "),
 517                                     wxT("TreeCtrl sample"),
 518                                     m_treeCtrl->ImageSize());
 519     if ( size == -1 )
 520         return;
 521
 522     m_treeCtrl->CreateImageList(size);
 523     wxGetApp().SetShowImages(TRUE);
 524 }
 525
 526 void MyFrame::OnToggleImages(wxCommandEvent& WXUNUSED(event))
 527 {
 528     if ( wxGetApp().ShowImages() )
 529     {
 530         m_treeCtrl->CreateImageList(-1);
 531         wxGetApp().SetShowImages(FALSE);
 532     }
 533     else
 534     {
 535         m_treeCtrl->CreateImageList(0);
 536         wxGetApp().SetShowImages(TRUE);
 537     }
 538 }
 539
 540 void MyFrame::OnToggleButtons(wxCommandEvent& WXUNUSED(event))
 541 {
 542 #if USE_GENERIC_TREECTRL || !defined(__WXMSW__)
 543     if ( wxGetApp().ShowButtons() )
 544     {
 545         m_treeCtrl->CreateButtonsImageList(-1);
 546         wxGetApp().SetShowButtons(FALSE);
 547     }
 548     else
 549     {
 550         m_treeCtrl->CreateButtonsImageList(15);
 551         wxGetApp().SetShowButtons(TRUE);
 552     }
 553 #endif
 554 }
 555
 556 void MyFrame::OnCollapseAndReset(wxCommandEvent& WXUNUSED(event))
 557 {
 558     m_treeCtrl->CollapseAndReset(m_treeCtrl->GetRootItem());
 559 }
 560
 561 void MyFrame::OnEnsureVisible(wxCommandEvent& WXUNUSED(event))
 562 {
 563     m_treeCtrl->DoEnsureVisible();
 564 }
 565
 566 void MyFrame::OnInsertItem(wxCommandEvent& WXUNUSED(event))
 567 {
 568     int image = wxGetApp().ShowImages() ? MyTreeCtrl::TreeCtrlIcon_File : -1;
 569     m_treeCtrl->InsertItem(m_treeCtrl->GetRootItem(), image, wxT("2nd item"));
 570 }
 571
 572 void MyFrame::OnAddItem(wxCommandEvent& WXUNUSED(event))
 573 {
 574     static int s_num = 0;
 575
 576     wxString text;
 577     text.Printf(wxT("Item #%d"), ++s_num);
 578
 579     m_treeCtrl->AppendItem(m_treeCtrl->GetRootItem(),
 580                            text /*,
 581                            MyTreeCtrl::TreeCtrlIcon_File */ );
 582 }
 583
 584 void MyFrame::OnIncIndent(wxCommandEvent& WXUNUSED(event))
 585 {
 586     unsigned int indent = m_treeCtrl->GetIndent();
 587     if (indent < 100)
 588         m_treeCtrl->SetIndent( indent+5 );
 589 }
 590
 591 void MyFrame::OnDecIndent(wxCommandEvent& WXUNUSED(event))
 592 {
 593     unsigned int indent = m_treeCtrl->GetIndent();
 594     if (indent > 10)
 595         m_treeCtrl->SetIndent( indent-5 );
 596 }
 597
 598 void MyFrame::OnIncSpacing(wxCommandEvent& WXUNUSED(event))
 599 {
 600     unsigned int indent = m_treeCtrl->GetSpacing();
 601     if (indent < 100)
 602         m_treeCtrl->SetSpacing( indent+5 );
 603 }
 604
 605 void MyFrame::OnDecSpacing(wxCommandEvent& WXUNUSED(event))
 606 {
 607     unsigned int indent = m_treeCtrl->GetSpacing();
 608     if (indent > 10)
 609         m_treeCtrl->SetSpacing( indent-5 );
 610 }
 611
 612 void MyFrame::OnToggleIcon(wxCommandEvent& WXUNUSED(event))
 613 {
 614     wxTreeItemId item = m_treeCtrl->GetSelection();
 615
 616     CHECK_ITEM( item );
 617
 618     m_treeCtrl->DoToggleIcon(item);
 619 }
 620
 621 void MyFrame::OnSetFgColour(wxCommandEvent& WXUNUSED(event))
 622 {
 623     wxColour col = wxGetColourFromUser(this, m_treeCtrl->GetForegroundColour());
 624     if ( col.Ok() )
 625         m_treeCtrl->SetForegroundColour(col);
 626 }
 627
 628 void MyFrame::OnSetBgColour(wxCommandEvent& WXUNUSED(event))
 629 {
 630     wxColour col = wxGetColourFromUser(this, m_treeCtrl->GetBackgroundColour());
 631     if ( col.Ok() )
 632         m_treeCtrl->SetBackgroundColour(col);
 633 }
 634
 635 // MyTreeCtrl implementation
 636 #if USE_GENERIC_TREECTRL
 637 IMPLEMENT_DYNAMIC_CLASS(MyTreeCtrl, wxGenericTreeCtrl)
 638 #else
 639 IMPLEMENT_DYNAMIC_CLASS(MyTreeCtrl, wxTreeCtrl)
 640 #endif
 641
 642 MyTreeCtrl::MyTreeCtrl(wxWindow *parent, const wxWindowID id,
 643                        const wxPoint& pos, const wxSize& size,
 644                        long style)
 645           : wxTreeCtrl(parent, id, pos, size, style)
 646 {
 647     m_reverseSort = FALSE;
 648
 649     CreateImageList();
 650
 651     // Add some items to the tree
 652     AddTestItemsToTree(5, 2);
 653 }
 654
 655 void MyTreeCtrl::CreateImageList(int size)
 656 {
 657     if ( size == -1 )
 658     {
 659         SetImageList(NULL);
 660         return;
 661     }
 662     if ( size == 0 )
 663         size = m_imageSize;
 664     else
 665         m_imageSize = size;
 666
 667     // Make an image list containing small icons
 668     wxImageList *images = new wxImageList(size, size, TRUE);
 669
 670     // should correspond to TreeCtrlIcon_xxx enum
 671     wxBusyCursor wait;
 672     wxIcon icons[5];
 673     icons[0] = wxIcon(icon1_xpm);
 674     icons[1] = wxIcon(icon2_xpm);
 675     icons[2] = wxIcon(icon3_xpm);
 676     icons[3] = wxIcon(icon4_xpm);
 677     icons[4] = wxIcon(icon5_xpm);
 678
 679     int sizeOrig = icons[0].GetWidth();
 680     for ( size_t i = 0; i < WXSIZEOF(icons); i++ )
 681     {
 682         if ( size == sizeOrig )
 683         {
 684             images->Add(icons[i]);
 685         }
 686         else
 687         {
 688             images->Add(wxBitmap(wxBitmap(icons[i]).ConvertToImage().Rescale(size, size)));
 689         }
 690     }
 691
 692     AssignImageList(images);
 693 }
 694
 695 #if USE_GENERIC_TREECTRL || !defined(__WXMSW__)
 696 void MyTreeCtrl::CreateButtonsImageList(int size)
 697 {
 698     if ( size == -1 )
 699     {
 700         SetButtonsImageList(NULL);
 701         return;
 702     }
 703
 704     // Make an image list containing small icons
 705     wxImageList *images = new wxImageList(size, size, TRUE);
 706
 707     // should correspond to TreeCtrlIcon_xxx enum
 708     wxBusyCursor wait;
 709     wxIcon icons[4];
 710     icons[0] = wxIcon(icon3_xpm);   // closed
 711     icons[1] = wxIcon(icon3_xpm);   // closed, selected
 712     icons[2] = wxIcon(icon5_xpm);   // open
 713     icons[3] = wxIcon(icon5_xpm);   // open, selected
 714
 715     for ( size_t i = 0; i < WXSIZEOF(icons); i++ )
 716     {
 717         int sizeOrig = icons[i].GetWidth();
 718         if ( size == sizeOrig )
 719         {
 720             images->Add(icons[i]);
 721         }
 722         else
 723         {
 724             images->Add(wxBitmap(wxBitmap(icons[i]).ConvertToImage().Rescale(size, size)));
 725         }
 726     }
 727
 728     AssignButtonsImageList(images);
 729 #else
 730 void MyTreeCtrl::CreateButtonsImageList(int WXUNUSED(size))
 731 {
 732 #endif
 733 }
 734
 735 MyTreeCtrl::~MyTreeCtrl()
 736 {
 737 }
 738
 739 int MyTreeCtrl::OnCompareItems(const wxTreeItemId& item1,
 740                                const wxTreeItemId& item2)
 741 {
 742     if ( m_reverseSort )
 743     {
 744         // just exchange 1st and 2nd items
 745         return wxTreeCtrl::OnCompareItems(item2, item1);
 746     }
 747     else
 748     {
 749         return wxTreeCtrl::OnCompareItems(item1, item2);
 750     }
 751 }
 752
 753 void MyTreeCtrl::AddItemsRecursively(const wxTreeItemId& idParent,
 754                                      size_t numChildren,
 755                                      size_t depth,
 756                                      size_t folder)
 757 {
 758     if ( depth > 0 )
 759     {
 760         bool hasChildren = depth > 1;
 761
 762         wxString str;
 763         for ( size_t n = 0; n < numChildren; n++ )
 764         {
 765             // at depth 1 elements won't have any more children
 766             if ( hasChildren )
 767                 str.Printf(wxT("%s child %d"), wxT("Folder"), n + 1);
 768             else
 769                 str.Printf(wxT("%s child %d.%d"), wxT("File"), folder, n + 1);
 770
 771             // here we pass to AppendItem() normal and selected item images (we
 772             // suppose that selected image follows the normal one in the enum)
 773             int image, imageSel;
 774             if ( wxGetApp().ShowImages() )
 775             {
 776                 image = depth == 1 ? TreeCtrlIcon_File : TreeCtrlIcon_Folder;
 777                 imageSel = image + 1;
 778             }
 779             else
 780             {
 781                 image = imageSel = -1;
 782             }
 783             wxTreeItemId id = AppendItem(idParent, str, image, imageSel,
 784                                          new MyTreeItemData(str));
 785
 786             // and now we also set the expanded one (only for the folders)
 787             if ( hasChildren && wxGetApp().ShowImages() )
 788             {
 789                 SetItemImage(id, TreeCtrlIcon_FolderOpened,
 790                              wxTreeItemIcon_Expanded);
 791             }
 792
 793             // remember the last child for OnEnsureVisible()
 794             if ( !hasChildren && n == numChildren - 1 )
 795             {
 796                 m_lastItem = id;
 797             }
 798
 799             AddItemsRecursively(id, numChildren, depth - 1, n + 1);
 800         }
 801     }
 802     //else: done!
 803 }
 804
 805 void MyTreeCtrl::AddTestItemsToTree(size_t numChildren,
 806                                     size_t depth)
 807 {
 808     int image = wxGetApp().ShowImages() ? MyTreeCtrl::TreeCtrlIcon_Folder : -1;
 809     wxTreeItemId rootId = AddRoot(wxT("Root"),
 810                                   image, image,
 811                                   new MyTreeItemData(wxT("Root item")));
 812     if ( image != -1 )
 813     {
 814         SetItemImage(rootId, TreeCtrlIcon_FolderOpened, wxTreeItemIcon_Expanded);
 815     }
 816
 817     AddItemsRecursively(rootId, numChildren, depth, 0);
 818
 819     // set some colours/fonts for testing
 820     SetItemFont(rootId, *wxITALIC_FONT);
 821
 822     wxTreeItemIdValue cookie;
 823     wxTreeItemId id = GetFirstChild(rootId, cookie);
 824     SetItemTextColour(id, *wxBLUE);
 825
 826     id = GetNextChild(rootId, cookie);
 827     id = GetNextChild(rootId, cookie);
 828     SetItemTextColour(id, *wxRED);
 829     SetItemBackgroundColour(id, *wxLIGHT_GREY);
 830 }
 831
 832 void MyTreeCtrl::GetItemsRecursively(const wxTreeItemId& idParent,
 833                                      wxTreeItemIdValue cookie)
 834 {
 835     wxTreeItemId id;
 836
 837     if ( !cookie )
 838         id = GetFirstChild(idParent, cookie);
 839     else
 840         id = GetNextChild(idParent, cookie);
 841
 842     if ( !id.IsOk() )
 843         return;
 844
 845     wxString text = GetItemText(id);
 846     wxLogMessage(text);
 847
 848     if (ItemHasChildren(id))
 849         GetItemsRecursively(id);
 850
 851     GetItemsRecursively(idParent, cookie);
 852 }
 853
 854 void MyTreeCtrl::DoToggleIcon(const wxTreeItemId& item)
 855 {
 856     int image = GetItemImage(item) == TreeCtrlIcon_Folder ? TreeCtrlIcon_File
 857                                                           : TreeCtrlIcon_Folder;
 858
 859     SetItemImage(item, image);
 860 }
 861
 862
 863 // avoid repetition
 864 #define TREE_EVENT_HANDLER(name)                                 \
 865 void MyTreeCtrl::name(wxTreeEvent& event)                        \
 866 {                                                                \
 867     wxLogMessage(wxT(#name));                                    \
 868     SetLastItem(wxTreeItemId());                                 \
 869     event.Skip();                                                \
 870 }
 871
 872 TREE_EVENT_HANDLER(OnBeginRDrag)
 873 TREE_EVENT_HANDLER(OnDeleteItem)
 874 TREE_EVENT_HANDLER(OnGetInfo)
 875 TREE_EVENT_HANDLER(OnSetInfo)
 876 TREE_EVENT_HANDLER(OnItemExpanded)
 877 TREE_EVENT_HANDLER(OnItemExpanding)
 878 TREE_EVENT_HANDLER(OnItemCollapsed)
 879 TREE_EVENT_HANDLER(OnSelChanged)
 880 TREE_EVENT_HANDLER(OnSelChanging)
 881
 882 #undef TREE_EVENT_HANDLER
 883
 884 void LogKeyEvent(const wxChar *name, const wxKeyEvent& event)
 885 {
 886     wxString key;
 887     long keycode = event.GetKeyCode();
 888     {
 889         switch ( keycode )
 890         {
 891             case WXK_BACK: key = wxT("BACK"); break;
 892             case WXK_TAB: key = wxT("TAB"); break;
 893             case WXK_RETURN: key = wxT("RETURN"); break;
 894             case WXK_ESCAPE: key = wxT("ESCAPE"); break;
 895             case WXK_SPACE: key = wxT("SPACE"); break;
 896             case WXK_DELETE: key = wxT("DELETE"); break;
 897             case WXK_START: key = wxT("START"); break;
 898             case WXK_LBUTTON: key = wxT("LBUTTON"); break;
 899             case WXK_RBUTTON: key = wxT("RBUTTON"); break;
 900             case WXK_CANCEL: key = wxT("CANCEL"); break;
 901             case WXK_MBUTTON: key = wxT("MBUTTON"); break;
 902             case WXK_CLEAR: key = wxT("CLEAR"); break;
 903             case WXK_SHIFT: key = wxT("SHIFT"); break;
 904             case WXK_ALT: key = wxT("ALT"); break;
 905             case WXK_CONTROL: key = wxT("CONTROL"); break;
 906             case WXK_MENU: key = wxT("MENU"); break;
 907             case WXK_PAUSE: key = wxT("PAUSE"); break;
 908             case WXK_CAPITAL: key = wxT("CAPITAL"); break;
 909             case WXK_PRIOR: key = wxT("PRIOR"); break;
 910             case WXK_NEXT: key = wxT("NEXT"); break;
 911             case WXK_END: key = wxT("END"); break;
 912             case WXK_HOME: key = wxT("HOME"); break;
 913             case WXK_LEFT: key = wxT("LEFT"); break;
 914             case WXK_UP: key = wxT("UP"); break;
 915             case WXK_RIGHT: key = wxT("RIGHT"); break;
 916             case WXK_DOWN: key = wxT("DOWN"); break;
 917             case WXK_SELECT: key = wxT("SELECT"); break;
 918             case WXK_PRINT: key = wxT("PRINT"); break;
 919             case WXK_EXECUTE: key = wxT("EXECUTE"); break;
 920             case WXK_SNAPSHOT: key = wxT("SNAPSHOT"); break;
 921             case WXK_INSERT: key = wxT("INSERT"); break;
 922             case WXK_HELP: key = wxT("HELP"); break;
 923             case WXK_NUMPAD0: key = wxT("NUMPAD0"); break;
 924             case WXK_NUMPAD1: key = wxT("NUMPAD1"); break;
 925             case WXK_NUMPAD2: key = wxT("NUMPAD2"); break;
 926             case WXK_NUMPAD3: key = wxT("NUMPAD3"); break;
 927             case WXK_NUMPAD4: key = wxT("NUMPAD4"); break;
 928             case WXK_NUMPAD5: key = wxT("NUMPAD5"); break;
 929             case WXK_NUMPAD6: key = wxT("NUMPAD6"); break;
 930             case WXK_NUMPAD7: key = wxT("NUMPAD7"); break;
 931             case WXK_NUMPAD8: key = wxT("NUMPAD8"); break;
 932             case WXK_NUMPAD9: key = wxT("NUMPAD9"); break;
 933             case WXK_MULTIPLY: key = wxT("MULTIPLY"); break;
 934             case WXK_ADD: key = wxT("ADD"); break;
 935             case WXK_SEPARATOR: key = wxT("SEPARATOR"); break;
 936             case WXK_SUBTRACT: key = wxT("SUBTRACT"); break;
 937             case WXK_DECIMAL: key = wxT("DECIMAL"); break;
 938             case WXK_DIVIDE: key = wxT("DIVIDE"); break;
 939             case WXK_F1: key = wxT("F1"); break;
 940             case WXK_F2: key = wxT("F2"); break;
 941             case WXK_F3: key = wxT("F3"); break;
 942             case WXK_F4: key = wxT("F4"); break;
 943             case WXK_F5: key = wxT("F5"); break;
 944             case WXK_F6: key = wxT("F6"); break;
 945             case WXK_F7: key = wxT("F7"); break;
 946             case WXK_F8: key = wxT("F8"); break;
 947             case WXK_F9: key = wxT("F9"); break;
 948             case WXK_F10: key = wxT("F10"); break;
 949             case WXK_F11: key = wxT("F11"); break;
 950             case WXK_F12: key = wxT("F12"); break;
 951             case WXK_F13: key = wxT("F13"); break;
 952             case WXK_F14: key = wxT("F14"); break;
 953             case WXK_F15: key = wxT("F15"); break;
 954             case WXK_F16: key = wxT("F16"); break;
 955             case WXK_F17: key = wxT("F17"); break;
 956             case WXK_F18: key = wxT("F18"); break;
 957             case WXK_F19: key = wxT("F19"); break;
 958             case WXK_F20: key = wxT("F20"); break;
 959             case WXK_F21: key = wxT("F21"); break;
 960             case WXK_F22: key = wxT("F22"); break;
 961             case WXK_F23: key = wxT("F23"); break;
 962             case WXK_F24: key = wxT("F24"); break;
 963             case WXK_NUMLOCK: key = wxT("NUMLOCK"); break;
 964             case WXK_SCROLL: key = wxT("SCROLL"); break;
 965             case WXK_PAGEUP: key = wxT("PAGEUP"); break;
 966             case WXK_PAGEDOWN: key = wxT("PAGEDOWN"); break;
 967             case WXK_NUMPAD_SPACE: key = wxT("NUMPAD_SPACE"); break;
 968             case WXK_NUMPAD_TAB: key = wxT("NUMPAD_TAB"); break;
 969             case WXK_NUMPAD_ENTER: key = wxT("NUMPAD_ENTER"); break;
 970             case WXK_NUMPAD_F1: key = wxT("NUMPAD_F1"); break;
 971             case WXK_NUMPAD_F2: key = wxT("NUMPAD_F2"); break;
 972             case WXK_NUMPAD_F3: key = wxT("NUMPAD_F3"); break;
 973             case WXK_NUMPAD_F4: key = wxT("NUMPAD_F4"); break;
 974             case WXK_NUMPAD_HOME: key = wxT("NUMPAD_HOME"); break;
 975             case WXK_NUMPAD_LEFT: key = wxT("NUMPAD_LEFT"); break;
 976             case WXK_NUMPAD_UP: key = wxT("NUMPAD_UP"); break;
 977             case WXK_NUMPAD_RIGHT: key = wxT("NUMPAD_RIGHT"); break;
 978             case WXK_NUMPAD_DOWN: key = wxT("NUMPAD_DOWN"); break;
 979             case WXK_NUMPAD_PRIOR: key = wxT("NUMPAD_PRIOR"); break;
 980             case WXK_NUMPAD_PAGEUP: key = wxT("NUMPAD_PAGEUP"); break;
 981             case WXK_NUMPAD_PAGEDOWN: key = wxT("NUMPAD_PAGEDOWN"); break;
 982             case WXK_NUMPAD_END: key = wxT("NUMPAD_END"); break;
 983             case WXK_NUMPAD_BEGIN: key = wxT("NUMPAD_BEGIN"); break;
 984             case WXK_NUMPAD_INSERT: key = wxT("NUMPAD_INSERT"); break;
 985             case WXK_NUMPAD_DELETE: key = wxT("NUMPAD_DELETE"); break;
 986             case WXK_NUMPAD_EQUAL: key = wxT("NUMPAD_EQUAL"); break;
 987             case WXK_NUMPAD_MULTIPLY: key = wxT("NUMPAD_MULTIPLY"); break;
 988             case WXK_NUMPAD_ADD: key = wxT("NUMPAD_ADD"); break;
 989             case WXK_NUMPAD_SEPARATOR: key = wxT("NUMPAD_SEPARATOR"); break;
 990             case WXK_NUMPAD_SUBTRACT: key = wxT("NUMPAD_SUBTRACT"); break;
 991             case WXK_NUMPAD_DECIMAL: key = wxT("NUMPAD_DECIMAL"); break;
 992
 993             default:
 994             {
 995                if ( wxIsprint((int)keycode) )
 996                    key.Printf(wxT("'%c'"), (char)keycode);
 997                else if ( keycode > 0 && keycode < 27 )
 998                    key.Printf(_("Ctrl-%c"), wxT('A') + keycode - 1);
 999                else
1000                    key.Printf(wxT("unknown (%ld)"), keycode);
1001             }
1002         }
1003     }
1004
1005     wxLogMessage( wxT("%s event: %s (flags = %c%c%c%c)"),
1006                   name,
1007                   key.c_str(),
1008                   event.ControlDown() ? wxT('C') : wxT('-'),
1009                   event.AltDown() ? wxT('A') : wxT('-'),
1010                   event.ShiftDown() ? wxT('S') : wxT('-'),
1011                   event.MetaDown() ? wxT('M') : wxT('-'));
1012 }
1013
1014 void MyTreeCtrl::OnTreeKeyDown(wxTreeEvent& event)
1015 {
1016     LogKeyEvent(wxT("Tree key down "), event.GetKeyEvent());
1017
1018     event.Skip();
1019 }
1020
1021 void MyTreeCtrl::OnBeginDrag(wxTreeEvent& event)
1022 {
1023     // need to explicitly allow drag
1024     if ( event.GetItem() != GetRootItem() )
1025     {
1026         m_draggedItem = event.GetItem();
1027
1028         wxLogMessage(wxT("OnBeginDrag: started dragging %s"),
1029                      GetItemText(m_draggedItem).c_str());
1030
1031         event.Allow();
1032     }
1033     else
1034     {
1035         wxLogMessage(wxT("OnBeginDrag: this item can't be dragged."));
1036     }
1037 }
1038
1039 void MyTreeCtrl::OnEndDrag(wxTreeEvent& event)
1040 {
1041     wxTreeItemId itemSrc = m_draggedItem,
1042                  itemDst = event.GetItem();
1043     m_draggedItem = (wxTreeItemId)0l;
1044
1045     // where to copy the item?
1046     if ( itemDst.IsOk() && !ItemHasChildren(itemDst) )
1047     {
1048         // copy to the parent then
1049         itemDst = GetItemParent(itemDst);
1050     }
1051
1052     if ( !itemDst.IsOk() )
1053     {
1054         wxLogMessage(wxT("OnEndDrag: can't drop here."));
1055
1056         return;
1057     }
1058
1059     wxString text = GetItemText(itemSrc);
1060     wxLogMessage(wxT("OnEndDrag: '%s' copied to '%s'."),
1061                  text.c_str(), GetItemText(itemDst).c_str());
1062
1063     // just do append here - we could also insert it just before/after the item
1064     // on which it was dropped, but this requires slightly more work... we also
1065     // completely ignore the client data and icon of the old item but could
1066     // copy them as well.
1067     //
1068     // Finally, we only copy one item here but we might copy the entire tree if
1069     // we were dragging a folder.
1070     int image = wxGetApp().ShowImages() ? TreeCtrlIcon_File : -1;
1071     AppendItem(itemDst, text, image);
1072 }
1073
1074 void MyTreeCtrl::OnBeginLabelEdit(wxTreeEvent& event)
1075 {
1076     wxLogMessage(wxT("OnBeginLabelEdit"));
1077
1078     // for testing, prevent this item's label editing
1079     wxTreeItemId itemId = event.GetItem();
1080     if ( IsTestItem(itemId) )
1081     {
1082         wxMessageBox(wxT("You can't edit this item."));
1083
1084         event.Veto();
1085     }
1086 }
1087
1088 void MyTreeCtrl::OnEndLabelEdit(wxTreeEvent& event)
1089 {
1090     wxLogMessage(wxT("OnEndLabelEdit"));
1091
1092     // don't allow anything except letters in the labels
1093     if ( !event.GetLabel().IsWord() )
1094     {
1095         wxMessageBox(wxT("The new label should be a single word."));
1096
1097         event.Veto();
1098     }
1099 }
1100
1101 void MyTreeCtrl::OnItemCollapsing(wxTreeEvent& event)
1102 {
1103     wxLogMessage(wxT("OnItemCollapsing"));
1104
1105     // for testing, prevent the user from collapsing the first child folder
1106     wxTreeItemId itemId = event.GetItem();
1107     if ( IsTestItem(itemId) )
1108     {
1109         wxMessageBox(wxT("You can't collapse this item."));
1110
1111         event.Veto();
1112     }
1113 }
1114
1115 void MyTreeCtrl::OnItemActivated(wxTreeEvent& event)
1116 {
1117     // show some info about this item
1118     wxTreeItemId itemId = event.GetItem();
1119     MyTreeItemData *item = (MyTreeItemData *)GetItemData(itemId);
1120
1121     if ( item != NULL )
1122     {
1123         item->ShowInfo(this);
1124     }
1125
1126     wxLogMessage(wxT("OnItemActivated"));
1127 }
1128
1129 void MyTreeCtrl::OnItemRightClick(wxTreeEvent& event)
1130 {
1131     ShowMenu(event.GetItem(), event.GetPoint());
1132 }
1133
1134 void MyTreeCtrl::OnContextMenu(wxContextMenuEvent& event)
1135 {
1136     wxPoint pt = event.GetPosition();
1137     wxTreeItemId item = GetSelection();
1138     wxLogMessage(wxT("OnContextMenu at screen coords (%i, %i)"), pt.x, pt.y);
1139
1140     //check if event was generated by keyboard (MSW-specific?)
1141     if (pt.x==-1 && pt.y==-1) //(this is how MSW indicates it)
1142     {
1143         //attempt to guess where to show the menu
1144         if (item.IsOk())
1145         {
1146             //if an item was clicked, show menu to the right of it
1147             wxRect rect;
1148             GetBoundingRect(item, rect, true); //true = only the label
1149             pt = wxPoint(rect.GetRight(), rect.GetTop());
1150         }
1151         else
1152         {
1153             pt = wxPoint(0, 0);
1154         }
1155     }
1156     else
1157     {
1158         //event was generated by mouse, use supplied coords
1159         pt = ScreenToClient(pt);
1160     }
1161
1162     ShowMenu(item, pt);
1163 }
1164
1165 void MyTreeCtrl::ShowMenu(wxTreeItemId id, const wxPoint& pt)
1166 {
1167     wxString title;
1168     if ( id.IsOk() )
1169     {
1170         title << wxT("Menu for ") << GetItemText(id);
1171     }
1172     else
1173     {
1174         title = wxT("Menu for no particular item");
1175     }
1176
1177 #if wxUSE_MENUS
1178     wxMenu menu(title);
1179     menu.Append(TreeTest_About, wxT("&About..."));
1180     menu.Append(TreeTest_Dump, wxT("&Dump"));
1181
1182     PopupMenu(&menu, pt);
1183 #endif // wxUSE_MENUS
1184 }
1185
1186 void MyTreeCtrl::OnRMouseDClick(wxMouseEvent& event)
1187 {
1188     wxTreeItemId id = HitTest(event.GetPosition());
1189     if ( !id )
1190         wxLogMessage(wxT("No item under mouse"));
1191     else
1192     {
1193         MyTreeItemData *item = (MyTreeItemData *)GetItemData(id);
1194         if ( item )
1195             wxLogMessage(wxT("Item '%s' under mouse"), item->GetDesc());
1196     }
1197 }
1198
1199 static inline const wxChar *Bool2String(bool b)
1200 {
1201     return b ? wxT("") : wxT("not ");
1202 }
1203
1204 void MyTreeItemData::ShowInfo(wxTreeCtrl *tree)
1205 {
1206     wxLogMessage(wxT("Item '%s': %sselected, %sexpanded, %sbold,\n")
1207                  wxT("%u children (%u immediately under this item)."),
1208                  m_desc.c_str(),
1209                  Bool2String(tree->IsSelected(GetId())),
1210                  Bool2String(tree->IsExpanded(GetId())),
1211                  Bool2String(tree->IsBold(GetId())),
1212                  tree->GetChildrenCount(GetId()),
1213                  tree->GetChildrenCount(GetId(), FALSE));
1214 }