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