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 #include "wx/numdlg.h"
  31
  32 #include "wx/image.h"
  33 #include "wx/imaglist.h"
  34 #include "wx/treectrl.h"
  35
  36 #include "math.h"
  37
  38 #ifdef __WIN32__
  39     // this is not supported by native control
  40     #define NO_VARIABLE_HEIGHT
  41 #endif
  42
  43 #include "treetest.h"
  44
  45 #include "icon1.xpm"
  46 #include "icon2.xpm"
  47 #include "icon3.xpm"
  48 #include "icon4.xpm"
  49 #include "icon5.xpm"
  50
  51 #if defined(__WXGTK__) || defined(__WXX11__) || defined(__WXMOTIF__) || defined(__WXMAC__) || defined(__WXMGL__)
  52 #include "mondrian.xpm"
  53 #endif
  54
  55
  56 // verify that the item is ok and insult the user if it is not
  57 #define CHECK_ITEM( item ) if ( !item.IsOk() ) {                                 \
  58                              wxMessageBox(wxT("Please select some item first!"), \
  59                                           wxT("Tree sample error"),              \
  60                                           wxOK | wxICON_EXCLAMATION,             \
  61                                           this);                                 \
  62                              return;                                             \
  63                            }
  64
  65 #define MENU_LINK(name) EVT_MENU(TreeTest_##name, MyFrame::On##name)
  66
  67 BEGIN_EVENT_TABLE(MyFrame, wxFrame)
  68     EVT_IDLE(MyFrame::OnIdle)
  69     EVT_SIZE(MyFrame::OnSize)
  70
  71     MENU_LINK(Quit)
  72     MENU_LINK(About)
  73
  74     MENU_LINK(TogButtons)
  75     MENU_LINK(TogTwist)
  76     MENU_LINK(TogLines)
  77     MENU_LINK(TogEdit)
  78     MENU_LINK(TogHideRoot)
  79     MENU_LINK(TogRootLines)
  80     MENU_LINK(TogBorder)
  81     MENU_LINK(TogFullHighlight)
  82     MENU_LINK(SetFgColour)
  83     MENU_LINK(SetBgColour)
  84     MENU_LINK(ResetStyle)
  85
  86     MENU_LINK(Dump)
  87 #ifndef NO_MULTIPLE_SELECTION
  88     MENU_LINK(DumpSelected)
  89     MENU_LINK(Select)
  90     MENU_LINK(Unselect)
  91     MENU_LINK(ToggleSel)
  92 #endif // NO_MULTIPLE_SELECTION
  93     MENU_LINK(Rename)
  94     MENU_LINK(Count)
  95     MENU_LINK(CountRec)
  96     MENU_LINK(Sort)
  97     MENU_LINK(SortRev)
  98     MENU_LINK(SetBold)
  99     MENU_LINK(ClearBold)
 100     MENU_LINK(Delete)
 101     MENU_LINK(DeleteChildren)
 102     MENU_LINK(DeleteAll)
 103     MENU_LINK(Recreate)
 104     MENU_LINK(ToggleImages)
 105     MENU_LINK(ToggleButtons)
 106     MENU_LINK(SetImageSize)
 107     MENU_LINK(CollapseAndReset)
 108     MENU_LINK(EnsureVisible)
 109     MENU_LINK(AddItem)
 110     MENU_LINK(InsertItem)
 111     MENU_LINK(IncIndent)
 112     MENU_LINK(DecIndent)
 113     MENU_LINK(IncSpacing)
 114     MENU_LINK(DecSpacing)
 115     MENU_LINK(ToggleIcon)
 116     MENU_LINK(SelectRoot)
 117 #undef MENU_LINK
 118
 119 END_EVENT_TABLE()
 120
 121 #if USE_GENERIC_TREECTRL
 122 BEGIN_EVENT_TABLE(MyTreeCtrl, wxGenericTreeCtrl)
 123 #else
 124 BEGIN_EVENT_TABLE(MyTreeCtrl, wxTreeCtrl)
 125 #endif
 126     EVT_TREE_BEGIN_DRAG(TreeTest_Ctrl, MyTreeCtrl::OnBeginDrag)
 127     EVT_TREE_BEGIN_RDRAG(TreeTest_Ctrl, MyTreeCtrl::OnBeginRDrag)
 128     EVT_TREE_END_DRAG(TreeTest_Ctrl, MyTreeCtrl::OnEndDrag)
 129     EVT_TREE_BEGIN_LABEL_EDIT(TreeTest_Ctrl, MyTreeCtrl::OnBeginLabelEdit)
 130     EVT_TREE_END_LABEL_EDIT(TreeTest_Ctrl, MyTreeCtrl::OnEndLabelEdit)
 131     EVT_TREE_DELETE_ITEM(TreeTest_Ctrl, MyTreeCtrl::OnDeleteItem)
 132 #if 0       // there are so many of those that logging them causes flicker
 133     EVT_TREE_GET_INFO(TreeTest_Ctrl, MyTreeCtrl::OnGetInfo)
 134 #endif
 135     EVT_TREE_SET_INFO(TreeTest_Ctrl, MyTreeCtrl::OnSetInfo)
 136     EVT_TREE_ITEM_EXPANDED(TreeTest_Ctrl, MyTreeCtrl::OnItemExpanded)
 137     EVT_TREE_ITEM_EXPANDING(TreeTest_Ctrl, MyTreeCtrl::OnItemExpanding)
 138     EVT_TREE_ITEM_COLLAPSED(TreeTest_Ctrl, MyTreeCtrl::OnItemCollapsed)
 139     EVT_TREE_ITEM_COLLAPSING(TreeTest_Ctrl, MyTreeCtrl::OnItemCollapsing)
 140     //EVT_TREE_ITEM_RIGHT_CLICK(TreeTest_Ctrl, MyTreeCtrl::OnItemRightClick)
 141
 142     EVT_CONTEXT_MENU(MyTreeCtrl::OnContextMenu)
 143     EVT_TREE_SEL_CHANGED(TreeTest_Ctrl, MyTreeCtrl::OnSelChanged)
 144     EVT_TREE_SEL_CHANGING(TreeTest_Ctrl, MyTreeCtrl::OnSelChanging)
 145     EVT_TREE_KEY_DOWN(TreeTest_Ctrl, MyTreeCtrl::OnTreeKeyDown)
 146     EVT_TREE_ITEM_ACTIVATED(TreeTest_Ctrl, MyTreeCtrl::OnItemActivated)
 147     EVT_RIGHT_DCLICK(MyTreeCtrl::OnRMouseDClick)
 148 END_EVENT_TABLE()
 149
 150 IMPLEMENT_APP(MyApp)
 151
 152 bool MyApp::OnInit()
 153 {
 154     // Create the main frame window
 155     MyFrame *frame = new MyFrame(wxT("wxTreeCtrl Test"), 50, 50, 450, 600);
 156
 157     // Show the frame
 158     frame->Show(true);
 159     SetTopWindow(frame);
 160
 161     return true;
 162 }
 163
 164
 165 // My frame constructor
 166 MyFrame::MyFrame(const wxString& title, int x, int y, int w, int h)
 167        : wxFrame((wxFrame *)NULL, wxID_ANY, title, wxPoint(x, y), wxSize(w, h)),
 168          m_treeCtrl(NULL)
 169 #if wxUSE_LOG
 170          , m_textCtrl(NULL)
 171 #endif // wxUSE_LOG
 172 {
 173     // This reduces flicker effects - even better would be to define
 174     // OnEraseBackground to do nothing. When the tree control's scrollbars are
 175     // show or hidden, the frame is sent a background erase event.
 176     SetBackgroundColour(wxColour(255, 255, 255));
 177
 178     // Give it an icon
 179     SetIcon(wxICON(mondrian));
 180
 181 #if wxUSE_MENUS
 182     // Make a menubar
 183     wxMenu *file_menu = new wxMenu,
 184            *style_menu = new wxMenu,
 185            *tree_menu = new wxMenu,
 186            *item_menu = new wxMenu;
 187
 188     file_menu->Append(TreeTest_About, wxT("&About..."));
 189     file_menu->AppendSeparator();
 190     file_menu->Append(TreeTest_Quit, wxT("E&xit\tAlt-X"));
 191
 192     style_menu->AppendCheckItem(TreeTest_TogButtons, wxT("Toggle &normal buttons"));
 193     style_menu->AppendCheckItem(TreeTest_TogTwist, wxT("Toggle &twister buttons"));
 194     style_menu->AppendCheckItem(TreeTest_ToggleButtons, wxT("Toggle image &buttons"));
 195     style_menu->AppendSeparator();
 196     style_menu->AppendCheckItem(TreeTest_TogLines, wxT("Toggle &connecting lines"));
 197     style_menu->AppendCheckItem(TreeTest_TogRootLines, wxT("Toggle &lines at root"));
 198     style_menu->AppendCheckItem(TreeTest_TogHideRoot, wxT("Toggle &hidden root"));
 199     style_menu->AppendCheckItem(TreeTest_TogBorder, wxT("Toggle &item border"));
 200     style_menu->AppendCheckItem(TreeTest_TogFullHighlight, wxT("Toggle &full row highlight"));
 201     style_menu->AppendCheckItem(TreeTest_TogEdit, wxT("Toggle &edit mode"));
 202 #ifndef NO_MULTIPLE_SELECTION
 203     style_menu->AppendCheckItem(TreeTest_ToggleSel, wxT("Toggle &selection mode"));
 204 #endif // NO_MULTIPLE_SELECTION
 205     style_menu->AppendCheckItem(TreeTest_ToggleImages, wxT("Toggle show ima&ges"));
 206     style_menu->Append(TreeTest_SetImageSize, wxT("Set image si&ze..."));
 207     style_menu->AppendSeparator();
 208     style_menu->Append(TreeTest_SetFgColour, wxT("Set &foreground colour..."));
 209     style_menu->Append(TreeTest_SetBgColour, wxT("Set &background colour..."));
 210     style_menu->AppendSeparator();
 211     style_menu->Append(TreeTest_ResetStyle, wxT("&Reset to default\tF10"));
 212
 213     tree_menu->Append(TreeTest_Recreate, wxT("&Recreate the tree"));
 214     tree_menu->Append(TreeTest_CollapseAndReset, wxT("C&ollapse and reset"));
 215     tree_menu->AppendSeparator();
 216     tree_menu->Append(TreeTest_AddItem, wxT("Append a &new item"));
 217     tree_menu->Append(TreeTest_InsertItem, wxT("&Insert a new item"));
 218     tree_menu->Append(TreeTest_Delete, wxT("&Delete this item"));
 219     tree_menu->Append(TreeTest_DeleteChildren, wxT("Delete &children"));
 220     tree_menu->Append(TreeTest_DeleteAll, wxT("Delete &all items"));
 221     tree_menu->Append(TreeTest_SelectRoot, wxT("Select root item"));
 222     tree_menu->AppendSeparator();
 223     tree_menu->Append(TreeTest_Count, wxT("Count children of current item"));
 224     tree_menu->Append(TreeTest_CountRec, wxT("Recursively count children of current item"));
 225     tree_menu->AppendSeparator();
 226     tree_menu->Append(TreeTest_Sort, wxT("Sort children of current item"));
 227     tree_menu->Append(TreeTest_SortRev, wxT("Sort in reversed order"));
 228     tree_menu->AppendSeparator();
 229     tree_menu->Append(TreeTest_EnsureVisible, wxT("Make the last item &visible"));
 230     tree_menu->AppendSeparator();
 231     tree_menu->Append(TreeTest_IncIndent, wxT("Add 5 points to indentation\tAlt-I"));
 232     tree_menu->Append(TreeTest_DecIndent, wxT("Reduce indentation by 5 points\tAlt-R"));
 233     tree_menu->AppendSeparator();
 234     tree_menu->Append(TreeTest_IncSpacing, wxT("Add 5 points to spacing\tCtrl-I"));
 235     tree_menu->Append(TreeTest_DecSpacing, wxT("Reduce spacing by 5 points\tCtrl-R"));
 236
 237     item_menu->Append(TreeTest_Dump, wxT("&Dump item children"));
 238     item_menu->Append(TreeTest_Rename, wxT("&Rename item..."));
 239
 240     item_menu->AppendSeparator();
 241     item_menu->Append(TreeTest_SetBold, wxT("Make item &bold"));
 242     item_menu->Append(TreeTest_ClearBold, wxT("Make item &not bold"));
 243     item_menu->AppendSeparator();
 244     item_menu->Append(TreeTest_ToggleIcon, wxT("Toggle the item's &icon"));
 245
 246 #ifndef NO_MULTIPLE_SELECTION
 247     item_menu->AppendSeparator();
 248     item_menu->Append(TreeTest_DumpSelected, wxT("Dump selected items\tAlt-D"));
 249     item_menu->Append(TreeTest_Select, wxT("Select current item\tAlt-S"));
 250     item_menu->Append(TreeTest_Unselect, wxT("Unselect everything\tAlt-U"));
 251 #endif // NO_MULTIPLE_SELECTION
 252
 253     wxMenuBar *menu_bar = new wxMenuBar;
 254     menu_bar->Append(file_menu, wxT("&File"));
 255     menu_bar->Append(style_menu, wxT("&Style"));
 256     menu_bar->Append(tree_menu, wxT("&Tree"));
 257     menu_bar->Append(item_menu, wxT("&Item"));
 258     SetMenuBar(menu_bar);
 259 #endif // wxUSE_MENUS
 260
 261 #if wxUSE_LOG
 262     // create the controls
 263     m_textCtrl = new wxTextCtrl(this, wxID_ANY, wxT(""),
 264                                 wxDefaultPosition, wxDefaultSize,
 265                                 wxTE_MULTILINE | wxSUNKEN_BORDER);
 266 #endif // wxUSE_LOG
 267
 268     CreateTreeWithDefStyle();
 269
 270     menu_bar->Check(TreeTest_ToggleImages, true);
 271
 272 #if wxUSE_STATUSBAR
 273     // create a status bar
 274     CreateStatusBar(2);
 275 #endif // wxUSE_STATUSBAR
 276
 277 #if wxUSE_LOG
 278 #ifdef __WXMOTIF__
 279     // For some reason, we get a memcpy crash in wxLogStream::DoLogStream
 280     // on gcc/wxMotif, if we use wxLogTextCtl. Maybe it's just gcc?
 281     delete wxLog::SetActiveTarget(new wxLogStderr);
 282 #else
 283     // set our text control as the log target
 284     wxLogTextCtrl *logWindow = new wxLogTextCtrl(m_textCtrl);
 285     delete wxLog::SetActiveTarget(logWindow);
 286 #endif
 287 #endif // wxUSE_LOG
 288 }
 289
 290 MyFrame::~MyFrame()
 291 {
 292 #if wxUSE_LOG
 293     delete wxLog::SetActiveTarget(NULL);
 294 #endif // wxUSE_LOG
 295 }
 296
 297 void MyFrame::CreateTreeWithDefStyle()
 298 {
 299     long style = wxTR_DEFAULT_STYLE |
 300 #ifndef NO_VARIABLE_HEIGHT
 301                  wxTR_HAS_VARIABLE_ROW_HEIGHT |
 302 #endif
 303                  wxTR_EDIT_LABELS;
 304
 305     CreateTree(style | wxSUNKEN_BORDER);
 306
 307     // as we don't know what wxTR_DEFAULT_STYLE could contain, test for
 308     // everything
 309     wxMenuBar *mbar = GetMenuBar();
 310     mbar->Check(TreeTest_TogButtons, (style & wxTR_HAS_BUTTONS) != 0);
 311     mbar->Check(TreeTest_TogButtons, (style & wxTR_TWIST_BUTTONS) != 0);
 312     mbar->Check(TreeTest_TogLines, (style & wxTR_NO_LINES) == 0);
 313     mbar->Check(TreeTest_TogRootLines, (style & wxTR_LINES_AT_ROOT) != 0);
 314     mbar->Check(TreeTest_TogHideRoot, (style & wxTR_HIDE_ROOT) != 0);
 315     mbar->Check(TreeTest_TogEdit, (style & wxTR_EDIT_LABELS) != 0);
 316     mbar->Check(TreeTest_TogBorder, (style & wxTR_ROW_LINES) != 0);
 317     mbar->Check(TreeTest_TogFullHighlight, (style & wxTR_FULL_ROW_HIGHLIGHT) != 0);
 318 }
 319
 320 void MyFrame::CreateTree(long style)
 321 {
 322     m_treeCtrl = new MyTreeCtrl(this, TreeTest_Ctrl,
 323                                 wxDefaultPosition, wxDefaultSize,
 324                                 style);
 325     Resize();
 326 }
 327
 328 void MyFrame::TogStyle(int id, long flag)
 329 {
 330     long style = m_treeCtrl->GetWindowStyle() ^ flag;
 331
 332     // most treectrl styles can't be changed on the fly using the native
 333     // control and the tree must be recreated
 334 #ifndef __WXMSW__
 335     m_treeCtrl->SetWindowStyle(style);
 336 #else // MSW
 337     delete m_treeCtrl;
 338     CreateTree(style);
 339 #endif // !MSW/MSW
 340
 341     GetMenuBar()->Check(id, (style & flag) != 0);
 342 }
 343
 344 void MyFrame::OnIdle(wxIdleEvent& event)
 345 {
 346 #if wxUSE_STATUSBAR
 347     if ( m_treeCtrl )
 348     {
 349         wxTreeItemId idRoot = m_treeCtrl->GetRootItem();
 350
 351         SetStatusText(wxString::Format
 352                       (
 353                         _T("Root/last item is %svisible/%svisible"),
 354                         m_treeCtrl->IsVisible(idRoot) ? _T("") : _T("not "),
 355                         m_treeCtrl->IsVisible(m_treeCtrl->GetLastChild(idRoot))
 356                             ? _T("") : _T("not ")
 357                       ), 1);
 358     }
 359 #endif // wxUSE_STATUSBAR
 360
 361     event.Skip();
 362 }
 363
 364 void MyFrame::OnSize(wxSizeEvent& event)
 365 {
 366     if ( m_treeCtrl
 367 #if wxUSE_LOG
 368                     && m_textCtrl
 369 #endif // wxUSE_LOG
 370                                   )
 371     {
 372         Resize();
 373     }
 374
 375     event.Skip();
 376 }
 377
 378 void MyFrame::Resize()
 379 {
 380     wxSize size = GetClientSize();
 381     m_treeCtrl->SetSize(0, 0, size.x, size.y
 382 #if !wxUSE_LOG
 383                                             );
 384 #else
 385                                             *2/3);
 386     m_textCtrl->SetSize(0, 2*size.y/3, size.x, size.y/3);
 387 #endif
 388 }
 389
 390 void MyFrame::OnQuit(wxCommandEvent& WXUNUSED(event))
 391 {
 392     Close(true);
 393 }
 394
 395 void MyFrame::OnAbout(wxCommandEvent& WXUNUSED(event))
 396 {
 397     wxMessageBox(wxT("Tree test sample\n")
 398                  wxT("(c) Julian Smart 1997, Vadim Zeitlin 1998"),
 399                  wxT("About tree test"),
 400                  wxOK | wxICON_INFORMATION, this);
 401 }
 402
 403 void MyFrame::OnRename(wxCommandEvent& WXUNUSED(event))
 404 {
 405     wxTreeItemId item = m_treeCtrl->GetSelection();
 406
 407     CHECK_ITEM( item );
 408
 409     // old code - now we edit in place
 410 #if 0
 411     static wxString s_text;
 412     s_text = wxGetTextFromUser(wxT("New name: "), wxT("Tree sample question"),
 413             s_text, this);
 414     if ( !s_text.IsEmpty() )
 415     {
 416         m_treeCtrl->SetItemText(item, s_text);
 417     }
 418 #endif // 0
 419
 420     // TODO demonstrate creating a custom edit control...
 421     (void)m_treeCtrl->EditLabel(item);
 422 }
 423
 424 void MyFrame::OnCount(wxCommandEvent& WXUNUSED(event))
 425 {
 426     wxTreeItemId item = m_treeCtrl->GetSelection();
 427
 428     CHECK_ITEM( item );
 429
 430     int i = m_treeCtrl->GetChildrenCount( item, false );
 431
 432     wxLogMessage(wxT("%d children"), i);
 433 }
 434
 435 void MyFrame::OnCountRec(wxCommandEvent& WXUNUSED(event))
 436 {
 437     wxTreeItemId item = m_treeCtrl->GetSelection();
 438
 439     CHECK_ITEM( item );
 440
 441     int i = m_treeCtrl->GetChildrenCount( item );
 442
 443     wxLogMessage(wxT("%d children"), i);
 444 }
 445
 446 void MyFrame::DoSort(bool reverse)
 447 {
 448     wxTreeItemId item = m_treeCtrl->GetSelection();
 449
 450     CHECK_ITEM( item );
 451
 452     m_treeCtrl->DoSortChildren(item, reverse);
 453 }
 454
 455 void MyFrame::OnDump(wxCommandEvent& WXUNUSED(event))
 456 {
 457     wxTreeItemId root = m_treeCtrl->GetSelection();
 458
 459     CHECK_ITEM( root );
 460
 461     m_treeCtrl->GetItemsRecursively(root);
 462 }
 463
 464 #ifndef NO_MULTIPLE_SELECTION
 465
 466 void MyFrame::OnToggleSel(wxCommandEvent& event)
 467 {
 468     TogStyle(event.GetId(), wxTR_MULTIPLE);
 469 }
 470
 471 void MyFrame::OnDumpSelected(wxCommandEvent& WXUNUSED(event))
 472 {
 473     wxArrayTreeItemIds array;
 474
 475     size_t count = m_treeCtrl->GetSelections(array);
 476     wxLogMessage(wxT("%u items selected"), count);
 477
 478     for ( size_t n = 0; n < count; n++ )
 479     {
 480         wxLogMessage(wxT("\t%s"), m_treeCtrl->GetItemText(array.Item(n)).c_str());
 481     }
 482 }
 483
 484 void MyFrame::OnSelect(wxCommandEvent& WXUNUSED(event))
 485 {
 486     m_treeCtrl->SelectItem(m_treeCtrl->GetSelection());
 487 }
 488
 489 void MyFrame::OnSelectRoot(wxCommandEvent& WXUNUSED(event))
 490 {
 491     m_treeCtrl->SelectItem(m_treeCtrl->GetRootItem());
 492 }
 493
 494 void MyFrame::OnUnselect(wxCommandEvent& WXUNUSED(event))
 495 {
 496     m_treeCtrl->UnselectAll();
 497 }
 498
 499 #endif // NO_MULTIPLE_SELECTION
 500
 501 void MyFrame::DoSetBold(bool bold)
 502 {
 503     wxTreeItemId item = m_treeCtrl->GetSelection();
 504
 505     CHECK_ITEM( item );
 506
 507     m_treeCtrl->SetItemBold(item, bold);
 508 }
 509
 510 void MyFrame::OnDelete(wxCommandEvent& WXUNUSED(event))
 511 {
 512     wxTreeItemId item = m_treeCtrl->GetSelection();
 513
 514     CHECK_ITEM( item );
 515
 516     m_treeCtrl->Delete(item);
 517 }
 518
 519 void MyFrame::OnDeleteChildren(wxCommandEvent& WXUNUSED(event))
 520 {
 521     wxTreeItemId item = m_treeCtrl->GetSelection();
 522
 523     CHECK_ITEM( item );
 524
 525     m_treeCtrl->DeleteChildren(item);
 526 }
 527
 528 void MyFrame::OnDeleteAll(wxCommandEvent& WXUNUSED(event))
 529 {
 530     m_treeCtrl->DeleteAllItems();
 531 }
 532
 533 void MyFrame::OnRecreate(wxCommandEvent& event)
 534 {
 535     OnDeleteAll(event);
 536     m_treeCtrl->AddTestItemsToTree(5, 2);
 537 }
 538
 539 void MyFrame::OnSetImageSize(wxCommandEvent& WXUNUSED(event))
 540 {
 541     int size = wxGetNumberFromUser(wxT("Enter the size for the images to use"),
 542                                     wxT("Size: "),
 543                                     wxT("TreeCtrl sample"),
 544                                     m_treeCtrl->ImageSize());
 545     if ( size == -1 )
 546         return;
 547
 548     m_treeCtrl->CreateImageList(size);
 549     wxGetApp().SetShowImages(true);
 550 }
 551
 552 void MyFrame::OnToggleImages(wxCommandEvent& WXUNUSED(event))
 553 {
 554     if ( wxGetApp().ShowImages() )
 555     {
 556         m_treeCtrl->CreateImageList(-1);
 557         wxGetApp().SetShowImages(false);
 558     }
 559     else
 560     {
 561         m_treeCtrl->CreateImageList(0);
 562         wxGetApp().SetShowImages(true);
 563     }
 564 }
 565
 566 void MyFrame::OnToggleButtons(wxCommandEvent& WXUNUSED(event))
 567 {
 568 #if USE_GENERIC_TREECTRL || !defined(__WXMSW__)
 569     if ( wxGetApp().ShowButtons() )
 570     {
 571         m_treeCtrl->CreateButtonsImageList(-1);
 572         wxGetApp().SetShowButtons(false);
 573     }
 574     else
 575     {
 576         m_treeCtrl->CreateButtonsImageList(15);
 577         wxGetApp().SetShowButtons(true);
 578     }
 579 #endif
 580 }
 581
 582 void MyFrame::OnCollapseAndReset(wxCommandEvent& WXUNUSED(event))
 583 {
 584     m_treeCtrl->CollapseAndReset(m_treeCtrl->GetRootItem());
 585 }
 586
 587 void MyFrame::OnEnsureVisible(wxCommandEvent& WXUNUSED(event))
 588 {
 589     m_treeCtrl->DoEnsureVisible();
 590 }
 591
 592 void MyFrame::OnInsertItem(wxCommandEvent& WXUNUSED(event))
 593 {
 594     int image = wxGetApp().ShowImages() ? MyTreeCtrl::TreeCtrlIcon_File : -1;
 595     m_treeCtrl->InsertItem(m_treeCtrl->GetRootItem(), image, wxT("2nd item"));
 596 }
 597
 598 void MyFrame::OnAddItem(wxCommandEvent& WXUNUSED(event))
 599 {
 600     static int s_num = 0;
 601
 602     wxString text;
 603     text.Printf(wxT("Item #%d"), ++s_num);
 604
 605     m_treeCtrl->AppendItem(m_treeCtrl->GetRootItem(),
 606                            text /*,
 607                            MyTreeCtrl::TreeCtrlIcon_File */ );
 608 }
 609
 610 void MyFrame::OnIncIndent(wxCommandEvent& WXUNUSED(event))
 611 {
 612     unsigned int indent = m_treeCtrl->GetIndent();
 613     if (indent < 100)
 614         m_treeCtrl->SetIndent( indent+5 );
 615 }
 616
 617 void MyFrame::OnDecIndent(wxCommandEvent& WXUNUSED(event))
 618 {
 619     unsigned int indent = m_treeCtrl->GetIndent();
 620     if (indent > 10)
 621         m_treeCtrl->SetIndent( indent-5 );
 622 }
 623
 624 void MyFrame::OnIncSpacing(wxCommandEvent& WXUNUSED(event))
 625 {
 626     unsigned int indent = m_treeCtrl->GetSpacing();
 627     if (indent < 100)
 628         m_treeCtrl->SetSpacing( indent+5 );
 629 }
 630
 631 void MyFrame::OnDecSpacing(wxCommandEvent& WXUNUSED(event))
 632 {
 633     unsigned int indent = m_treeCtrl->GetSpacing();
 634     if (indent > 10)
 635         m_treeCtrl->SetSpacing( indent-5 );
 636 }
 637
 638 void MyFrame::OnToggleIcon(wxCommandEvent& WXUNUSED(event))
 639 {
 640     wxTreeItemId item = m_treeCtrl->GetSelection();
 641
 642     CHECK_ITEM( item );
 643
 644     m_treeCtrl->DoToggleIcon(item);
 645 }
 646
 647 void MyFrame::OnSetFgColour(wxCommandEvent& WXUNUSED(event))
 648 {
 649     wxColour col = wxGetColourFromUser(this, m_treeCtrl->GetForegroundColour());
 650     if ( col.Ok() )
 651         m_treeCtrl->SetForegroundColour(col);
 652 }
 653
 654 void MyFrame::OnSetBgColour(wxCommandEvent& WXUNUSED(event))
 655 {
 656     wxColour col = wxGetColourFromUser(this, m_treeCtrl->GetBackgroundColour());
 657     if ( col.Ok() )
 658         m_treeCtrl->SetBackgroundColour(col);
 659 }
 660
 661 // MyTreeCtrl implementation
 662 #if USE_GENERIC_TREECTRL
 663 IMPLEMENT_DYNAMIC_CLASS(MyTreeCtrl, wxGenericTreeCtrl)
 664 #else
 665 IMPLEMENT_DYNAMIC_CLASS(MyTreeCtrl, wxTreeCtrl)
 666 #endif
 667
 668 MyTreeCtrl::MyTreeCtrl(wxWindow *parent, const wxWindowID id,
 669                        const wxPoint& pos, const wxSize& size,
 670                        long style)
 671           : wxTreeCtrl(parent, id, pos, size, style)
 672 {
 673     m_reverseSort = false;
 674
 675     CreateImageList();
 676
 677     // Add some items to the tree
 678     AddTestItemsToTree(5, 2);
 679 }
 680
 681 void MyTreeCtrl::CreateImageList(int size)
 682 {
 683     if ( size == -1 )
 684     {
 685         SetImageList(NULL);
 686         return;
 687     }
 688     if ( size == 0 )
 689         size = m_imageSize;
 690     else
 691         m_imageSize = size;
 692
 693     // Make an image list containing small icons
 694     wxImageList *images = new wxImageList(size, size, true);
 695
 696     // should correspond to TreeCtrlIcon_xxx enum
 697     wxBusyCursor wait;
 698     wxIcon icons[5];
 699     icons[0] = wxIcon(icon1_xpm);
 700     icons[1] = wxIcon(icon2_xpm);
 701     icons[2] = wxIcon(icon3_xpm);
 702     icons[3] = wxIcon(icon4_xpm);
 703     icons[4] = wxIcon(icon5_xpm);
 704
 705     int sizeOrig = icons[0].GetWidth();
 706     for ( size_t i = 0; i < WXSIZEOF(icons); i++ )
 707     {
 708         if ( size == sizeOrig )
 709         {
 710             images->Add(icons[i]);
 711         }
 712         else
 713         {
 714             images->Add(wxBitmap(wxBitmap(icons[i]).ConvertToImage().Rescale(size, size)));
 715         }
 716     }
 717
 718     AssignImageList(images);
 719 }
 720
 721 #if USE_GENERIC_TREECTRL || !defined(__WXMSW__)
 722 void MyTreeCtrl::CreateButtonsImageList(int size)
 723 {
 724     if ( size == -1 )
 725     {
 726         SetButtonsImageList(NULL);
 727         return;
 728     }
 729
 730     // Make an image list containing small icons
 731     wxImageList *images = new wxImageList(size, size, true);
 732
 733     // should correspond to TreeCtrlIcon_xxx enum
 734     wxBusyCursor wait;
 735     wxIcon icons[4];
 736     icons[0] = wxIcon(icon3_xpm);   // closed
 737     icons[1] = wxIcon(icon3_xpm);   // closed, selected
 738     icons[2] = wxIcon(icon5_xpm);   // open
 739     icons[3] = wxIcon(icon5_xpm);   // open, selected
 740
 741     for ( size_t i = 0; i < WXSIZEOF(icons); i++ )
 742     {
 743         int sizeOrig = icons[i].GetWidth();
 744         if ( size == sizeOrig )
 745         {
 746             images->Add(icons[i]);
 747         }
 748         else
 749         {
 750             images->Add(wxBitmap(wxBitmap(icons[i]).ConvertToImage().Rescale(size, size)));
 751         }
 752     }
 753
 754     AssignButtonsImageList(images);
 755 #else
 756 void MyTreeCtrl::CreateButtonsImageList(int WXUNUSED(size))
 757 {
 758 #endif
 759 }
 760
 761 int MyTreeCtrl::OnCompareItems(const wxTreeItemId& item1,
 762                                const wxTreeItemId& item2)
 763 {
 764     if ( m_reverseSort )
 765     {
 766         // just exchange 1st and 2nd items
 767         return wxTreeCtrl::OnCompareItems(item2, item1);
 768     }
 769     else
 770     {
 771         return wxTreeCtrl::OnCompareItems(item1, item2);
 772     }
 773 }
 774
 775 void MyTreeCtrl::AddItemsRecursively(const wxTreeItemId& idParent,
 776                                      size_t numChildren,
 777                                      size_t depth,
 778                                      size_t folder)
 779 {
 780     if ( depth > 0 )
 781     {
 782         bool hasChildren = depth > 1;
 783
 784         wxString str;
 785         for ( size_t n = 0; n < numChildren; n++ )
 786         {
 787             // at depth 1 elements won't have any more children
 788             if ( hasChildren )
 789                 str.Printf(wxT("%s child %d"), wxT("Folder"), n + 1);
 790             else
 791                 str.Printf(wxT("%s child %d.%d"), wxT("File"), folder, n + 1);
 792
 793             // here we pass to AppendItem() normal and selected item images (we
 794             // suppose that selected image follows the normal one in the enum)
 795             int image, imageSel;
 796             if ( wxGetApp().ShowImages() )
 797             {
 798                 image = depth == 1 ? TreeCtrlIcon_File : TreeCtrlIcon_Folder;
 799                 imageSel = image + 1;
 800             }
 801             else
 802             {
 803                 image = imageSel = -1;
 804             }
 805             wxTreeItemId id = AppendItem(idParent, str, image, imageSel,
 806                                          new MyTreeItemData(str));
 807
 808             // and now we also set the expanded one (only for the folders)
 809             if ( hasChildren && wxGetApp().ShowImages() )
 810             {
 811                 SetItemImage(id, TreeCtrlIcon_FolderOpened,
 812                              wxTreeItemIcon_Expanded);
 813             }
 814
 815             // remember the last child for OnEnsureVisible()
 816             if ( !hasChildren && n == numChildren - 1 )
 817             {
 818                 m_lastItem = id;
 819             }
 820
 821             AddItemsRecursively(id, numChildren, depth - 1, n + 1);
 822         }
 823     }
 824     //else: done!
 825 }
 826
 827 void MyTreeCtrl::AddTestItemsToTree(size_t numChildren,
 828                                     size_t depth)
 829 {
 830     int image = wxGetApp().ShowImages() ? MyTreeCtrl::TreeCtrlIcon_Folder : -1;
 831     wxTreeItemId rootId = AddRoot(wxT("Root"),
 832                                   image, image,
 833                                   new MyTreeItemData(wxT("Root item")));
 834     if ( image != -1 )
 835     {
 836         SetItemImage(rootId, TreeCtrlIcon_FolderOpened, wxTreeItemIcon_Expanded);
 837     }
 838
 839     AddItemsRecursively(rootId, numChildren, depth, 0);
 840
 841     // set some colours/fonts for testing
 842     SetItemFont(rootId, *wxITALIC_FONT);
 843
 844     wxTreeItemIdValue cookie;
 845     wxTreeItemId id = GetFirstChild(rootId, cookie);
 846     SetItemTextColour(id, *wxBLUE);
 847
 848     id = GetNextChild(rootId, cookie);
 849     id = GetNextChild(rootId, cookie);
 850     SetItemTextColour(id, *wxRED);
 851     SetItemBackgroundColour(id, *wxLIGHT_GREY);
 852 }
 853
 854 void MyTreeCtrl::GetItemsRecursively(const wxTreeItemId& idParent,
 855                                      wxTreeItemIdValue cookie)
 856 {
 857     wxTreeItemId id;
 858
 859     if ( !cookie )
 860         id = GetFirstChild(idParent, cookie);
 861     else
 862         id = GetNextChild(idParent, cookie);
 863
 864     if ( !id.IsOk() )
 865         return;
 866
 867     wxString text = GetItemText(id);
 868     wxLogMessage(text);
 869
 870     if (ItemHasChildren(id))
 871         GetItemsRecursively(id);
 872
 873     GetItemsRecursively(idParent, cookie);
 874 }
 875
 876 void MyTreeCtrl::DoToggleIcon(const wxTreeItemId& item)
 877 {
 878     int image = GetItemImage(item) == TreeCtrlIcon_Folder ? TreeCtrlIcon_File
 879                                                           : TreeCtrlIcon_Folder;
 880
 881     SetItemImage(item, image);
 882 }
 883
 884
 885 // avoid repetition
 886 #define TREE_EVENT_HANDLER(name)                                 \
 887 void MyTreeCtrl::name(wxTreeEvent& event)                        \
 888 {                                                                \
 889     wxLogMessage(wxT(#name));                                    \
 890     SetLastItem(wxTreeItemId());                                 \
 891     event.Skip();                                                \
 892 }
 893
 894 TREE_EVENT_HANDLER(OnBeginRDrag)
 895 TREE_EVENT_HANDLER(OnDeleteItem)
 896 TREE_EVENT_HANDLER(OnGetInfo)
 897 TREE_EVENT_HANDLER(OnSetInfo)
 898 TREE_EVENT_HANDLER(OnItemExpanded)
 899 TREE_EVENT_HANDLER(OnItemExpanding)
 900 TREE_EVENT_HANDLER(OnItemCollapsed)
 901 TREE_EVENT_HANDLER(OnSelChanged)
 902 TREE_EVENT_HANDLER(OnSelChanging)
 903
 904 #undef TREE_EVENT_HANDLER
 905
 906 void LogKeyEvent(const wxChar *name, const wxKeyEvent& event)
 907 {
 908     wxString key;
 909     long keycode = event.GetKeyCode();
 910     {
 911         switch ( keycode )
 912         {
 913             case WXK_BACK: key = wxT("BACK"); break;
 914             case WXK_TAB: key = wxT("TAB"); break;
 915             case WXK_RETURN: key = wxT("RETURN"); break;
 916             case WXK_ESCAPE: key = wxT("ESCAPE"); break;
 917             case WXK_SPACE: key = wxT("SPACE"); break;
 918             case WXK_DELETE: key = wxT("DELETE"); break;
 919             case WXK_START: key = wxT("START"); break;
 920             case WXK_LBUTTON: key = wxT("LBUTTON"); break;
 921             case WXK_RBUTTON: key = wxT("RBUTTON"); break;
 922             case WXK_CANCEL: key = wxT("CANCEL"); break;
 923             case WXK_MBUTTON: key = wxT("MBUTTON"); break;
 924             case WXK_CLEAR: key = wxT("CLEAR"); break;
 925             case WXK_SHIFT: key = wxT("SHIFT"); break;
 926             case WXK_ALT: key = wxT("ALT"); break;
 927             case WXK_CONTROL: key = wxT("CONTROL"); break;
 928             case WXK_MENU: key = wxT("MENU"); break;
 929             case WXK_PAUSE: key = wxT("PAUSE"); break;
 930             case WXK_CAPITAL: key = wxT("CAPITAL"); break;
 931             case WXK_PRIOR: key = wxT("PRIOR"); break;
 932             case WXK_NEXT: key = wxT("NEXT"); break;
 933             case WXK_END: key = wxT("END"); break;
 934             case WXK_HOME: key = wxT("HOME"); break;
 935             case WXK_LEFT: key = wxT("LEFT"); break;
 936             case WXK_UP: key = wxT("UP"); break;
 937             case WXK_RIGHT: key = wxT("RIGHT"); break;
 938             case WXK_DOWN: key = wxT("DOWN"); break;
 939             case WXK_SELECT: key = wxT("SELECT"); break;
 940             case WXK_PRINT: key = wxT("PRINT"); break;
 941             case WXK_EXECUTE: key = wxT("EXECUTE"); break;
 942             case WXK_SNAPSHOT: key = wxT("SNAPSHOT"); break;
 943             case WXK_INSERT: key = wxT("INSERT"); break;
 944             case WXK_HELP: key = wxT("HELP"); break;
 945             case WXK_NUMPAD0: key = wxT("NUMPAD0"); break;
 946             case WXK_NUMPAD1: key = wxT("NUMPAD1"); break;
 947             case WXK_NUMPAD2: key = wxT("NUMPAD2"); break;
 948             case WXK_NUMPAD3: key = wxT("NUMPAD3"); break;
 949             case WXK_NUMPAD4: key = wxT("NUMPAD4"); break;
 950             case WXK_NUMPAD5: key = wxT("NUMPAD5"); break;
 951             case WXK_NUMPAD6: key = wxT("NUMPAD6"); break;
 952             case WXK_NUMPAD7: key = wxT("NUMPAD7"); break;
 953             case WXK_NUMPAD8: key = wxT("NUMPAD8"); break;
 954             case WXK_NUMPAD9: key = wxT("NUMPAD9"); break;
 955             case WXK_MULTIPLY: key = wxT("MULTIPLY"); break;
 956             case WXK_ADD: key = wxT("ADD"); break;
 957             case WXK_SEPARATOR: key = wxT("SEPARATOR"); break;
 958             case WXK_SUBTRACT: key = wxT("SUBTRACT"); break;
 959             case WXK_DECIMAL: key = wxT("DECIMAL"); break;
 960             case WXK_DIVIDE: key = wxT("DIVIDE"); break;
 961             case WXK_F1: key = wxT("F1"); break;
 962             case WXK_F2: key = wxT("F2"); break;
 963             case WXK_F3: key = wxT("F3"); break;
 964             case WXK_F4: key = wxT("F4"); break;
 965             case WXK_F5: key = wxT("F5"); break;
 966             case WXK_F6: key = wxT("F6"); break;
 967             case WXK_F7: key = wxT("F7"); break;
 968             case WXK_F8: key = wxT("F8"); break;
 969             case WXK_F9: key = wxT("F9"); break;
 970             case WXK_F10: key = wxT("F10"); break;
 971             case WXK_F11: key = wxT("F11"); break;
 972             case WXK_F12: key = wxT("F12"); break;
 973             case WXK_F13: key = wxT("F13"); break;
 974             case WXK_F14: key = wxT("F14"); break;
 975             case WXK_F15: key = wxT("F15"); break;
 976             case WXK_F16: key = wxT("F16"); break;
 977             case WXK_F17: key = wxT("F17"); break;
 978             case WXK_F18: key = wxT("F18"); break;
 979             case WXK_F19: key = wxT("F19"); break;
 980             case WXK_F20: key = wxT("F20"); break;
 981             case WXK_F21: key = wxT("F21"); break;
 982             case WXK_F22: key = wxT("F22"); break;
 983             case WXK_F23: key = wxT("F23"); break;
 984             case WXK_F24: key = wxT("F24"); break;
 985             case WXK_NUMLOCK: key = wxT("NUMLOCK"); break;
 986             case WXK_SCROLL: key = wxT("SCROLL"); break;
 987             case WXK_PAGEUP: key = wxT("PAGEUP"); break;
 988             case WXK_PAGEDOWN: key = wxT("PAGEDOWN"); break;
 989             case WXK_NUMPAD_SPACE: key = wxT("NUMPAD_SPACE"); break;
 990             case WXK_NUMPAD_TAB: key = wxT("NUMPAD_TAB"); break;
 991             case WXK_NUMPAD_ENTER: key = wxT("NUMPAD_ENTER"); break;
 992             case WXK_NUMPAD_F1: key = wxT("NUMPAD_F1"); break;
 993             case WXK_NUMPAD_F2: key = wxT("NUMPAD_F2"); break;
 994             case WXK_NUMPAD_F3: key = wxT("NUMPAD_F3"); break;
 995             case WXK_NUMPAD_F4: key = wxT("NUMPAD_F4"); break;
 996             case WXK_NUMPAD_HOME: key = wxT("NUMPAD_HOME"); break;
 997             case WXK_NUMPAD_LEFT: key = wxT("NUMPAD_LEFT"); break;
 998             case WXK_NUMPAD_UP: key = wxT("NUMPAD_UP"); break;
 999             case WXK_NUMPAD_RIGHT: key = wxT("NUMPAD_RIGHT"); break;
1000             case WXK_NUMPAD_DOWN: key = wxT("NUMPAD_DOWN"); break;
1001             case WXK_NUMPAD_PRIOR: key = wxT("NUMPAD_PRIOR"); break;
1002             case WXK_NUMPAD_PAGEUP: key = wxT("NUMPAD_PAGEUP"); break;
1003             case WXK_NUMPAD_PAGEDOWN: key = wxT("NUMPAD_PAGEDOWN"); break;
1004             case WXK_NUMPAD_END: key = wxT("NUMPAD_END"); break;
1005             case WXK_NUMPAD_BEGIN: key = wxT("NUMPAD_BEGIN"); break;
1006             case WXK_NUMPAD_INSERT: key = wxT("NUMPAD_INSERT"); break;
1007             case WXK_NUMPAD_DELETE: key = wxT("NUMPAD_DELETE"); break;
1008             case WXK_NUMPAD_EQUAL: key = wxT("NUMPAD_EQUAL"); break;
1009             case WXK_NUMPAD_MULTIPLY: key = wxT("NUMPAD_MULTIPLY"); break;
1010             case WXK_NUMPAD_ADD: key = wxT("NUMPAD_ADD"); break;
1011             case WXK_NUMPAD_SEPARATOR: key = wxT("NUMPAD_SEPARATOR"); break;
1012             case WXK_NUMPAD_SUBTRACT: key = wxT("NUMPAD_SUBTRACT"); break;
1013             case WXK_NUMPAD_DECIMAL: key = wxT("NUMPAD_DECIMAL"); break;
1014
1015             default:
1016             {
1017                if ( wxIsprint((int)keycode) )
1018                    key.Printf(wxT("'%c'"), (char)keycode);
1019                else if ( keycode > 0 && keycode < 27 )
1020                    key.Printf(_("Ctrl-%c"), wxT('A') + keycode - 1);
1021                else
1022                    key.Printf(wxT("unknown (%ld)"), keycode);
1023             }
1024         }
1025     }
1026
1027     wxLogMessage( wxT("%s event: %s (flags = %c%c%c%c)"),
1028                   name,
1029                   key.c_str(),
1030                   event.ControlDown() ? wxT('C') : wxT('-'),
1031                   event.AltDown() ? wxT('A') : wxT('-'),
1032                   event.ShiftDown() ? wxT('S') : wxT('-'),
1033                   event.MetaDown() ? wxT('M') : wxT('-'));
1034 }
1035
1036 void MyTreeCtrl::OnTreeKeyDown(wxTreeEvent& event)
1037 {
1038     LogKeyEvent(wxT("Tree key down "), event.GetKeyEvent());
1039
1040     event.Skip();
1041 }
1042
1043 void MyTreeCtrl::OnBeginDrag(wxTreeEvent& event)
1044 {
1045     // need to explicitly allow drag
1046     if ( event.GetItem() != GetRootItem() )
1047     {
1048         m_draggedItem = event.GetItem();
1049
1050         wxLogMessage(wxT("OnBeginDrag: started dragging %s"),
1051                      GetItemText(m_draggedItem).c_str());
1052
1053         event.Allow();
1054     }
1055     else
1056     {
1057         wxLogMessage(wxT("OnBeginDrag: this item can't be dragged."));
1058     }
1059 }
1060
1061 void MyTreeCtrl::OnEndDrag(wxTreeEvent& event)
1062 {
1063     wxTreeItemId itemSrc = m_draggedItem,
1064                  itemDst = event.GetItem();
1065     m_draggedItem = (wxTreeItemId)0l;
1066
1067     // where to copy the item?
1068     if ( itemDst.IsOk() && !ItemHasChildren(itemDst) )
1069     {
1070         // copy to the parent then
1071         itemDst = GetItemParent(itemDst);
1072     }
1073
1074     if ( !itemDst.IsOk() )
1075     {
1076         wxLogMessage(wxT("OnEndDrag: can't drop here."));
1077
1078         return;
1079     }
1080
1081     wxString text = GetItemText(itemSrc);
1082     wxLogMessage(wxT("OnEndDrag: '%s' copied to '%s'."),
1083                  text.c_str(), GetItemText(itemDst).c_str());
1084
1085     // just do append here - we could also insert it just before/after the item
1086     // on which it was dropped, but this requires slightly more work... we also
1087     // completely ignore the client data and icon of the old item but could
1088     // copy them as well.
1089     //
1090     // Finally, we only copy one item here but we might copy the entire tree if
1091     // we were dragging a folder.
1092     int image = wxGetApp().ShowImages() ? TreeCtrlIcon_File : -1;
1093     AppendItem(itemDst, text, image);
1094 }
1095
1096 void MyTreeCtrl::OnBeginLabelEdit(wxTreeEvent& event)
1097 {
1098     wxLogMessage(wxT("OnBeginLabelEdit"));
1099
1100     // for testing, prevent this item's label editing
1101     wxTreeItemId itemId = event.GetItem();
1102     if ( IsTestItem(itemId) )
1103     {
1104         wxMessageBox(wxT("You can't edit this item."));
1105
1106         event.Veto();
1107     }
1108 }
1109
1110 void MyTreeCtrl::OnEndLabelEdit(wxTreeEvent& event)
1111 {
1112     wxLogMessage(wxT("OnEndLabelEdit"));
1113
1114     // don't allow anything except letters in the labels
1115     if ( !event.GetLabel().IsWord() )
1116     {
1117         wxMessageBox(wxT("The new label should be a single word."));
1118
1119         event.Veto();
1120     }
1121 }
1122
1123 void MyTreeCtrl::OnItemCollapsing(wxTreeEvent& event)
1124 {
1125     wxLogMessage(wxT("OnItemCollapsing"));
1126
1127     // for testing, prevent the user from collapsing the first child folder
1128     wxTreeItemId itemId = event.GetItem();
1129     if ( IsTestItem(itemId) )
1130     {
1131         wxMessageBox(wxT("You can't collapse this item."));
1132
1133         event.Veto();
1134     }
1135 }
1136
1137 void MyTreeCtrl::OnItemActivated(wxTreeEvent& event)
1138 {
1139     // show some info about this item
1140     wxTreeItemId itemId = event.GetItem();
1141     MyTreeItemData *item = (MyTreeItemData *)GetItemData(itemId);
1142
1143     if ( item != NULL )
1144     {
1145         item->ShowInfo(this);
1146     }
1147
1148     wxLogMessage(wxT("OnItemActivated"));
1149 }
1150
1151 void MyTreeCtrl::OnItemRightClick(wxTreeEvent& event)
1152 {
1153     ShowMenu(event.GetItem(), event.GetPoint());
1154 }
1155
1156 void MyTreeCtrl::OnContextMenu(wxContextMenuEvent& event)
1157 {
1158     wxPoint pt = event.GetPosition();
1159     wxTreeItemId item = GetSelection();
1160     wxLogMessage(wxT("OnContextMenu at screen coords (%i, %i)"), pt.x, pt.y);
1161
1162     //check if event was generated by keyboard (MSW-specific?)
1163     if (pt.x==-1 && pt.y==-1) //(this is how MSW indicates it)
1164     {
1165         //attempt to guess where to show the menu
1166         if (item.IsOk())
1167         {
1168             //if an item was clicked, show menu to the right of it
1169             wxRect rect;
1170             GetBoundingRect(item, rect, true); //true = only the label
1171             pt = wxPoint(rect.GetRight(), rect.GetTop());
1172         }
1173         else
1174         {
1175             pt = wxPoint(0, 0);
1176         }
1177     }
1178     else
1179     {
1180         //event was generated by mouse, use supplied coords
1181         pt = ScreenToClient(pt);
1182     }
1183
1184     ShowMenu(item, pt);
1185 }
1186
1187 void MyTreeCtrl::ShowMenu(wxTreeItemId id, const wxPoint& pt)
1188 {
1189     wxString title;
1190     if ( id.IsOk() )
1191     {
1192         title << wxT("Menu for ") << GetItemText(id);
1193     }
1194     else
1195     {
1196         title = wxT("Menu for no particular item");
1197     }
1198
1199 #if wxUSE_MENUS
1200     wxMenu menu(title);
1201     menu.Append(TreeTest_About, wxT("&About..."));
1202     menu.Append(TreeTest_Dump, wxT("&Dump"));
1203
1204     PopupMenu(&menu, pt);
1205 #endif // wxUSE_MENUS
1206 }
1207
1208 void MyTreeCtrl::OnRMouseDClick(wxMouseEvent& event)
1209 {
1210     wxTreeItemId id = HitTest(event.GetPosition());
1211     if ( !id )
1212         wxLogMessage(wxT("No item under mouse"));
1213     else
1214     {
1215         MyTreeItemData *item = (MyTreeItemData *)GetItemData(id);
1216         if ( item )
1217             wxLogMessage(wxT("Item '%s' under mouse"), item->GetDesc());
1218     }
1219 }
1220
1221 static inline const wxChar *Bool2String(bool b)
1222 {
1223     return b ? wxT("") : wxT("not ");
1224 }
1225
1226 void MyTreeItemData::ShowInfo(wxTreeCtrl *tree)
1227 {
1228     wxLogMessage(wxT("Item '%s': %sselected, %sexpanded, %sbold,\n")
1229                  wxT("%u children (%u immediately under this item)."),
1230                  m_desc.c_str(),
1231                  Bool2String(tree->IsSelected(GetId())),
1232                  Bool2String(tree->IsExpanded(GetId())),
1233                  Bool2String(tree->IsBold(GetId())),
1234                  tree->GetChildrenCount(GetId()),
1235                  tree->GetChildrenCount(GetId(), false));
1236 }