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