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 and Markus Holzem
   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 #endif
  27
  28 #include "wx/log.h"
  29
  30 #include "wx/image.h"
  31 #include "wx/imaglist.h"
  32 #include "wx/treectrl.h"
  33
  34 #include "math.h"
  35
  36 #ifdef __WXMSW__
  37     // comment out this line to test multiple selection even under MSW (where
  38     // it looks ugly - but works)
  39     #define NO_MULTIPLE_SELECTION
  40 #endif
  41
  42 #define NO_VARIABLE_HEIGHT
  43
  44 #include "treetest.h"
  45
  46 // under Windows the icons are in the .rc file
  47 #ifndef __WXMSW__
  48   #include "icon1.xpm"
  49   #include "icon2.xpm"
  50   #include "icon3.xpm"
  51   #include "icon4.xpm"
  52   #include "icon5.xpm"
  53   #include "mondrian.xpm"
  54 #endif
  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("Please select some item first!", \
  59                                           "Tree sample error",              \
  60                                           wxOK | wxICON_EXCLAMATION,        \
  61                                           this);                            \
  62                              return;                                        \
  63                            }
  64
  65 BEGIN_EVENT_TABLE(MyFrame, wxFrame)
  66     EVT_MENU(TreeTest_Quit, MyFrame::OnQuit)
  67     EVT_MENU(TreeTest_About, MyFrame::OnAbout)
  68     EVT_MENU(TreeTest_Dump, MyFrame::OnDump)
  69 #ifndef NO_MULTIPLE_SELECTION
  70     EVT_MENU(TreeTest_DumpSelected, MyFrame::OnDumpSelected)
  71     EVT_MENU(TreeTest_Select, MyFrame::OnSelect)
  72     EVT_MENU(TreeTest_Unselect, MyFrame::OnUnselect)
  73 #endif // NO_MULTIPLE_SELECTION
  74     EVT_MENU(TreeTest_Rename, MyFrame::OnRename)
  75     EVT_MENU(TreeTest_Count, MyFrame::OnCount)
  76     EVT_MENU(TreeTest_CountRec, MyFrame::OnCountRec)
  77     EVT_MENU(TreeTest_Sort, MyFrame::OnSort)
  78     EVT_MENU(TreeTest_SortRev, MyFrame::OnSortRev)
  79     EVT_MENU(TreeTest_Bold, MyFrame::OnSetBold)
  80     EVT_MENU(TreeTest_UnBold, MyFrame::OnClearBold)
  81     EVT_MENU(TreeTest_Delete, MyFrame::OnDelete)
  82     EVT_MENU(TreeTest_DeleteChildren, MyFrame::OnDeleteChildren)
  83     EVT_MENU(TreeTest_DeleteAll, MyFrame::OnDeleteAll)
  84     EVT_MENU(TreeTest_Recreate, MyFrame::OnRecreate)
  85     EVT_MENU(TreeTest_CollapseAndReset, MyFrame::OnCollapseAndReset)
  86     EVT_MENU(TreeTest_EnsureVisible, MyFrame::OnEnsureVisible)
  87     EVT_MENU(TreeTest_AddItem, MyFrame::OnAddItem)
  88     EVT_MENU(TreeTest_InsertItem, MyFrame::OnInsertItem)
  89     EVT_MENU(TreeTest_IncIndent, MyFrame::OnIncIndent)
  90     EVT_MENU(TreeTest_DecIndent, MyFrame::OnDecIndent)
  91     EVT_MENU(TreeTest_IncSpacing, MyFrame::OnIncSpacing)
  92     EVT_MENU(TreeTest_DecSpacing, MyFrame::OnDecSpacing)
  93     EVT_MENU(TreeTest_ToggleIcon, MyFrame::OnToggleIcon)
  94 END_EVENT_TABLE()
  95
  96 BEGIN_EVENT_TABLE(MyTreeCtrl, wxTreeCtrl)
  97     EVT_TREE_BEGIN_DRAG(TreeTest_Ctrl, MyTreeCtrl::OnBeginDrag)
  98     EVT_TREE_BEGIN_RDRAG(TreeTest_Ctrl, MyTreeCtrl::OnBeginRDrag)
  99     EVT_TREE_BEGIN_LABEL_EDIT(TreeTest_Ctrl, MyTreeCtrl::OnBeginLabelEdit)
 100     EVT_TREE_END_LABEL_EDIT(TreeTest_Ctrl, MyTreeCtrl::OnEndLabelEdit)
 101     EVT_TREE_DELETE_ITEM(TreeTest_Ctrl, MyTreeCtrl::OnDeleteItem)
 102 #if 0       // there are so many of those that logging them causes flicker
 103     EVT_TREE_GET_INFO(TreeTest_Ctrl, MyTreeCtrl::OnGetInfo)
 104 #endif
 105     EVT_TREE_SET_INFO(TreeTest_Ctrl, MyTreeCtrl::OnSetInfo)
 106     EVT_TREE_ITEM_EXPANDED(TreeTest_Ctrl, MyTreeCtrl::OnItemExpanded)
 107     EVT_TREE_ITEM_EXPANDING(TreeTest_Ctrl, MyTreeCtrl::OnItemExpanding)
 108     EVT_TREE_ITEM_COLLAPSED(TreeTest_Ctrl, MyTreeCtrl::OnItemCollapsed)
 109     EVT_TREE_ITEM_COLLAPSING(TreeTest_Ctrl, MyTreeCtrl::OnItemCollapsing)
 110     EVT_TREE_SEL_CHANGED(TreeTest_Ctrl, MyTreeCtrl::OnSelChanged)
 111     EVT_TREE_SEL_CHANGING(TreeTest_Ctrl, MyTreeCtrl::OnSelChanging)
 112     EVT_TREE_KEY_DOWN(TreeTest_Ctrl, MyTreeCtrl::OnTreeKeyDown)
 113     EVT_TREE_ITEM_ACTIVATED(TreeTest_Ctrl, MyTreeCtrl::OnItemActivated)
 114     EVT_RIGHT_DCLICK(MyTreeCtrl::OnRMouseDClick)
 115 END_EVENT_TABLE()
 116
 117 IMPLEMENT_APP(MyApp)
 118
 119 bool MyApp::OnInit()
 120 {
 121     // Create the main frame window
 122     MyFrame *frame = new MyFrame("wxTreeCtrl Test", 50, 50, 450, 340);
 123
 124     // Show the frame
 125     frame->Show(TRUE);
 126     SetTopWindow(frame);
 127
 128     return TRUE;
 129 }
 130
 131
 132 // My frame constructor
 133 MyFrame::MyFrame(const wxString& title, int x, int y, int w, int h)
 134        : wxFrame((wxFrame *)NULL, -1, title, wxPoint(x, y), wxSize(w, h))
 135 {
 136     // This reduces flicker effects - even better would be to define
 137     // OnEraseBackground to do nothing. When the tree control's scrollbars are
 138     // show or hidden, the frame is sent a background erase event.
 139     SetBackgroundColour(wxColour(255, 255, 255));
 140
 141     // Give it an icon
 142     SetIcon(wxICON(mondrian));
 143
 144     // Make a menubar
 145     wxMenu *file_menu = new wxMenu,
 146            *tree_menu = new wxMenu,
 147            *item_menu = new wxMenu;
 148
 149     file_menu->Append(TreeTest_About, "&About...");
 150     file_menu->AppendSeparator();
 151     file_menu->Append(TreeTest_Quit, "E&xit");
 152
 153     tree_menu->Append(TreeTest_Recreate, "&Recreate the tree");
 154     tree_menu->Append(TreeTest_CollapseAndReset, "C&ollapse and reset");
 155     tree_menu->AppendSeparator();
 156     tree_menu->Append(TreeTest_AddItem, "Append a &new item");
 157     tree_menu->Append(TreeTest_InsertItem, "&Insert a new item");
 158     tree_menu->Append(TreeTest_Delete, "&Delete this item");
 159     tree_menu->Append(TreeTest_DeleteChildren, "Delete &children");
 160     tree_menu->Append(TreeTest_DeleteAll, "Delete &all items");
 161     tree_menu->AppendSeparator();
 162     tree_menu->Append(TreeTest_Count, "Count children of current item");
 163     tree_menu->Append(TreeTest_CountRec, "Recursively count children of current item");
 164     tree_menu->AppendSeparator();
 165     tree_menu->Append(TreeTest_Sort, "Sort children of current item");
 166     tree_menu->Append(TreeTest_SortRev, "Sort in reversed order");
 167     tree_menu->AppendSeparator();
 168     tree_menu->Append(TreeTest_EnsureVisible, "Make the last item &visible");
 169     tree_menu->AppendSeparator();
 170     tree_menu->Append(TreeTest_IncIndent, "Add 5 points to indentation\tAlt-I");
 171     tree_menu->Append(TreeTest_DecIndent, "Reduce indentation by 5 points\tAlt-R");
 172     tree_menu->AppendSeparator();
 173     tree_menu->Append(TreeTest_IncSpacing, "Add 5 points to spacing\tCtrl-I");
 174     tree_menu->Append(TreeTest_DecSpacing, "Reduce spacing by 5 points\tCtrl-R");
 175
 176     item_menu->Append(TreeTest_Dump, "&Dump item children");
 177     item_menu->Append(TreeTest_Rename, "&Rename item...");
 178
 179     item_menu->AppendSeparator();
 180     item_menu->Append(TreeTest_Bold, "Make item &bold");
 181     item_menu->Append(TreeTest_UnBold, "Make item &not bold");
 182     item_menu->AppendSeparator();
 183     item_menu->Append(TreeTest_ToggleIcon, "Toggle the items &icon");
 184
 185 #ifndef NO_MULTIPLE_SELECTION
 186     item_menu->AppendSeparator();
 187     item_menu->Append(TreeTest_DumpSelected, "Dump selected items\tAlt-D");
 188     item_menu->Append(TreeTest_Select, "Select current item\tAlt-S");
 189     item_menu->Append(TreeTest_Unselect, "Unselect everything\tAlt-U");
 190 #endif
 191
 192     wxMenuBar *menu_bar = new wxMenuBar;
 193     menu_bar->Append(file_menu, "&File");
 194     menu_bar->Append(tree_menu, "&Tree");
 195     menu_bar->Append(item_menu, "&Item");
 196     SetMenuBar(menu_bar);
 197
 198     m_treeCtrl = new MyTreeCtrl(this, TreeTest_Ctrl,
 199                                 wxDefaultPosition, wxDefaultSize,
 200                                 wxTR_HAS_BUTTONS |
 201                                 wxTR_EDIT_LABELS |
 202 #ifndef NO_MULTIPLE_SELECTION
 203                                 wxTR_MULTIPLE |
 204 #endif
 205 #ifndef NO_VARIABLE_HEIGHT
 206                                 wxTR_HAS_VARIABLE_ROW_HEIGHT |
 207 #endif
 208                                 wxSUNKEN_BORDER);
 209
 210     m_treeCtrl->SetBackgroundColour(wxColour(204, 205, 79));
 211
 212     wxTextCtrl *textCtrl = new wxTextCtrl(this, -1, "",
 213                                 wxDefaultPosition, wxDefaultSize,
 214                                 wxTE_MULTILINE | wxSUNKEN_BORDER);
 215
 216     wxLayoutConstraints *c = new wxLayoutConstraints;
 217     c->top.SameAs(this, wxTop);
 218     c->left.SameAs(this, wxLeft);
 219     c->right.SameAs(this, wxRight);
 220     c->height.PercentOf(this, wxHeight, 66);
 221     m_treeCtrl->SetConstraints(c);
 222
 223     c = new wxLayoutConstraints;
 224     c->top.Below(m_treeCtrl);
 225     c->left.SameAs(this, wxLeft);
 226     c->right.SameAs(this, wxRight);
 227     c->bottom.SameAs(this, wxBottom);
 228     textCtrl->SetConstraints(c);
 229     SetAutoLayout(TRUE);
 230
 231     // create a status bar with 3 panes
 232     CreateStatusBar(3);
 233     SetStatusText("", 0);
 234
 235 #ifdef __WXMOTIF__
 236     // For some reason, we get a memcpy crash in wxLogStream::DoLogStream
 237     // on gcc/wxMotif, if we use wxLogTextCtl. Maybe it's just gcc?
 238     delete wxLog::SetActiveTarget(new wxLogStderr);
 239 #else
 240     // set our text control as the log target
 241     wxLogTextCtrl *logWindow = new wxLogTextCtrl(textCtrl);
 242     delete wxLog::SetActiveTarget(logWindow);
 243 #endif
 244 }
 245
 246 MyFrame::~MyFrame()
 247 {
 248     delete wxLog::SetActiveTarget(NULL);
 249 }
 250
 251 void MyFrame::OnQuit(wxCommandEvent& WXUNUSED(event))
 252 {
 253     Close(TRUE);
 254 }
 255
 256 void MyFrame::OnAbout(wxCommandEvent& WXUNUSED(event))
 257 {
 258     wxMessageBox("Tree test sample\n"
 259                  "(c) Julian Smart 1997, Vadim Zeitlin 1998",
 260                  "About tree test",
 261                  wxOK | wxICON_INFORMATION, this);
 262 }
 263
 264 void MyFrame::OnRename(wxCommandEvent& WXUNUSED(event))
 265 {
 266     wxTreeItemId item = m_treeCtrl->GetSelection();
 267
 268     CHECK_ITEM( item );
 269
 270     // old code - now we edit in place
 271 #if 0
 272     static wxString s_text;
 273     s_text = wxGetTextFromUser("New name: ", "Tree sample question",
 274             s_text, this);
 275     if ( !s_text.IsEmpty() )
 276     {
 277         m_treeCtrl->SetItemText(item, s_text);
 278     }
 279 #endif // 0
 280
 281     // TODO demonstrate creating a custom edit control...
 282     (void)m_treeCtrl->EditLabel(item);
 283 }
 284
 285 void MyFrame::OnCount(wxCommandEvent& WXUNUSED(event))
 286 {
 287     wxTreeItemId item = m_treeCtrl->GetSelection();
 288
 289     CHECK_ITEM( item );
 290
 291     int i = m_treeCtrl->GetChildrenCount( item, FALSE );
 292
 293     wxLogMessage(wxT("%d children"), i);
 294 }
 295
 296 void MyFrame::OnCountRec(wxCommandEvent& WXUNUSED(event))
 297 {
 298     wxTreeItemId item = m_treeCtrl->GetSelection();
 299
 300     CHECK_ITEM( item );
 301
 302     int i = m_treeCtrl->GetChildrenCount( item );
 303
 304     wxLogMessage(wxT("%d children"), i);
 305 }
 306
 307 void MyFrame::DoSort(bool reverse)
 308 {
 309     wxTreeItemId item = m_treeCtrl->GetSelection();
 310
 311     CHECK_ITEM( item );
 312
 313     m_treeCtrl->DoSortChildren(item, reverse);
 314 }
 315
 316 void MyFrame::OnDump(wxCommandEvent& WXUNUSED(event))
 317 {
 318     wxTreeItemId root = m_treeCtrl->GetSelection();
 319
 320     CHECK_ITEM( root );
 321
 322     m_treeCtrl->GetItemsRecursively(root, -1);
 323 }
 324
 325 #ifndef NO_MULTIPLE_SELECTION
 326
 327 void MyFrame::OnDumpSelected(wxCommandEvent& WXUNUSED(event))
 328 {
 329     wxArrayTreeItemIds array;
 330
 331     size_t count = m_treeCtrl->GetSelections(array);
 332     wxLogMessage(wxT("%u items selected"), count);
 333
 334     for ( size_t n = 0; n < count; n++ )
 335     {
 336         wxLogMessage("\t%s", m_treeCtrl->GetItemText(array.Item(n)).c_str());
 337     }
 338 }
 339
 340 void MyFrame::OnSelect(wxCommandEvent& event)
 341 {
 342     m_treeCtrl->SelectItem(m_treeCtrl->GetSelection());
 343 }
 344
 345 void MyFrame::OnUnselect(wxCommandEvent& event)
 346 {
 347     m_treeCtrl->UnselectAll();
 348 }
 349
 350 #endif // NO_MULTIPLE_SELECTION
 351
 352 void MyFrame::DoSetBold(bool bold)
 353 {
 354     wxTreeItemId item = m_treeCtrl->GetSelection();
 355
 356     CHECK_ITEM( item );
 357
 358     m_treeCtrl->SetItemBold(item, bold);
 359 }
 360
 361 void MyFrame::OnDelete(wxCommandEvent& WXUNUSED(event))
 362 {
 363     wxTreeItemId item = m_treeCtrl->GetSelection();
 364
 365     CHECK_ITEM( item );
 366
 367     m_treeCtrl->Delete(item);
 368 }
 369
 370 void MyFrame::OnDeleteChildren(wxCommandEvent& WXUNUSED(event))
 371 {
 372     wxTreeItemId item = m_treeCtrl->GetSelection();
 373
 374     CHECK_ITEM( item );
 375
 376     m_treeCtrl->DeleteChildren(item);
 377 }
 378
 379 void MyFrame::OnDeleteAll(wxCommandEvent& WXUNUSED(event))
 380 {
 381     m_treeCtrl->DeleteAllItems();
 382 }
 383
 384 void MyFrame::OnRecreate(wxCommandEvent& event)
 385 {
 386     OnDeleteAll(event);
 387     m_treeCtrl->AddTestItemsToTree(3, 2);
 388 }
 389
 390 void MyFrame::OnCollapseAndReset(wxCommandEvent& event)
 391 {
 392     m_treeCtrl->CollapseAndReset(m_treeCtrl->GetRootItem());
 393 }
 394
 395 void MyFrame::OnEnsureVisible(wxCommandEvent& event)
 396 {
 397     m_treeCtrl->DoEnsureVisible();
 398 }
 399
 400 void MyFrame::OnInsertItem(wxCommandEvent& WXUNUSED(event))
 401 {
 402     m_treeCtrl->InsertItem(m_treeCtrl->GetRootItem(), 1, "2nd item");
 403 }
 404
 405 void MyFrame::OnAddItem(wxCommandEvent& WXUNUSED(event))
 406 {
 407     static int s_num = 0;
 408
 409     wxString text;
 410     text.Printf("Item #%d", ++s_num);
 411
 412     m_treeCtrl->AppendItem(m_treeCtrl->GetRootItem(),
 413                            text /*,
 414                            MyTreeCtrl::TreeCtrlIcon_File */ );
 415 }
 416
 417 void MyFrame::OnIncIndent(wxCommandEvent& WXUNUSED(event))
 418 {
 419     unsigned int indent = m_treeCtrl->GetIndent();
 420     if (indent < 100)
 421         m_treeCtrl->SetIndent( indent+5 );
 422 }
 423
 424 void MyFrame::OnDecIndent(wxCommandEvent& WXUNUSED(event))
 425 {
 426     unsigned int indent = m_treeCtrl->GetIndent();
 427     if (indent > 10)
 428         m_treeCtrl->SetIndent( indent-5 );
 429 }
 430
 431 void MyFrame::OnIncSpacing(wxCommandEvent& WXUNUSED(event))
 432 {
 433     unsigned int indent = m_treeCtrl->GetSpacing();
 434     if (indent < 100)
 435         m_treeCtrl->SetSpacing( indent+5 );
 436 }
 437
 438 void MyFrame::OnDecSpacing(wxCommandEvent& WXUNUSED(event))
 439 {
 440     unsigned int indent = m_treeCtrl->GetSpacing();
 441     if (indent > 10)
 442         m_treeCtrl->SetSpacing( indent-5 );
 443 }
 444
 445 void MyFrame::OnToggleIcon(wxCommandEvent& WXUNUSED(event))
 446 {
 447     wxTreeItemId item = m_treeCtrl->GetSelection();
 448
 449     CHECK_ITEM( item );
 450
 451     m_treeCtrl->DoToggleIcon(item);
 452 }
 453
 454 // MyTreeCtrl implementation
 455 IMPLEMENT_DYNAMIC_CLASS(MyTreeCtrl, wxTreeCtrl)
 456
 457 MyTreeCtrl::MyTreeCtrl(wxWindow *parent, const wxWindowID id,
 458                        const wxPoint& pos, const wxSize& size,
 459                        long style)
 460           : wxTreeCtrl(parent, id, pos, size, style)
 461 {
 462 #ifndef NO_VARIABLE_HEIGHT
 463 #if wxUSE_LIBJPEG
 464     wxImage::AddHandler(new wxJPEGHandler);
 465     wxImage image;
 466
 467     image.LoadFile(wxString("horse.jpg"), wxBITMAP_TYPE_JPEG );
 468 #endif
 469 #endif
 470
 471     m_reverseSort = FALSE;
 472
 473     // Make an image list containing small icons
 474     m_imageListNormal = new wxImageList(16, 16, TRUE);
 475
 476     // should correspond to TreeCtrlIcon_xxx enum
 477 #if defined(__WXMSW__) && defined(__WIN16__)
 478     // This is required in 16-bit Windows mode only because we can't load a specific (16x16)
 479     // icon image, so it comes out stretched
 480 #  ifndef NO_VARIABLE_HEIGHT
 481     m_imageListNormal->Add(image.ConvertToBitmap());
 482 #  else
 483     m_imageListNormal->Add(wxBitmap("bitmap1", wxBITMAP_TYPE_BMP_RESOURCE));
 484 #  endif
 485     m_imageListNormal->Add(wxBitmap("bitmap2", wxBITMAP_TYPE_BMP_RESOURCE));
 486     m_imageListNormal->Add(wxBitmap("bitmap3", wxBITMAP_TYPE_BMP_RESOURCE));
 487     m_imageListNormal->Add(wxBitmap("bitmap4", wxBITMAP_TYPE_BMP_RESOURCE));
 488     m_imageListNormal->Add(wxBitmap("bitmap5", wxBITMAP_TYPE_BMP_RESOURCE));
 489 #else
 490 #  ifndef NO_VARIABLE_HEIGHT
 491     m_imageListNormal->Add(image.ConvertToBitmap());
 492 #  else
 493     m_imageListNormal->Add(wxICON(icon1));
 494 #  endif
 495     m_imageListNormal->Add(wxICON(icon2));
 496     m_imageListNormal->Add(wxICON(icon3));
 497     m_imageListNormal->Add(wxICON(icon4));
 498     m_imageListNormal->Add(wxICON(icon5));
 499 #endif
 500
 501     SetImageList(m_imageListNormal);
 502
 503     // Add some items to the tree
 504     AddTestItemsToTree(3, 2);
 505 }
 506
 507 MyTreeCtrl::~MyTreeCtrl()
 508 {
 509     delete m_imageListNormal;
 510 }
 511
 512 int MyTreeCtrl::OnCompareItems(const wxTreeItemId& item1,
 513                                const wxTreeItemId& item2)
 514 {
 515     if ( m_reverseSort )
 516     {
 517         // just exchange 1st and 2nd items
 518         return wxTreeCtrl::OnCompareItems(item2, item1);
 519     }
 520     else
 521     {
 522         return wxTreeCtrl::OnCompareItems(item1, item2);
 523     }
 524 }
 525
 526 void MyTreeCtrl::AddItemsRecursively(const wxTreeItemId& idParent,
 527                                      size_t numChildren,
 528                                      size_t depth,
 529                                      size_t folder)
 530 {
 531     if ( depth > 0 )
 532     {
 533         bool hasChildren = depth > 1;
 534
 535         wxString str;
 536         for ( size_t n = 0; n < numChildren; n++ )
 537         {
 538             // at depth 1 elements won't have any more children
 539             if ( hasChildren )
 540                 str.Printf("%s child %d", "Folder", n + 1);
 541             else
 542                 str.Printf("%s child %d.%d", "File", folder, n + 1);
 543
 544             // here we pass to AppendItem() normal and selected item images (we
 545             // suppose that selected image follows the normal one in the enum)
 546             int image = depth == 1 ? TreeCtrlIcon_File : TreeCtrlIcon_Folder;
 547             wxTreeItemId id = AppendItem(idParent, str, image, image + 1,
 548                                          new MyTreeItemData(str));
 549
 550             // and now we also set the expanded one (only for the folders)
 551             if ( hasChildren )
 552             {
 553                 SetItemImage(id, TreeCtrlIcon_FolderOpened,
 554                              wxTreeItemIcon_Expanded);
 555             }
 556
 557             // remember the last child for OnEnsureVisible()
 558             if ( !hasChildren && n == numChildren - 1 )
 559             {
 560                 m_lastItem = id;
 561             }
 562
 563             AddItemsRecursively(id, numChildren, depth - 1, n + 1);
 564         }
 565     }
 566     //else: done!
 567 }
 568
 569 void MyTreeCtrl::AddTestItemsToTree(size_t numChildren,
 570                                     size_t depth)
 571 {
 572     wxTreeItemId rootId = AddRoot("Root",
 573                                   TreeCtrlIcon_Folder, TreeCtrlIcon_Folder,
 574                                   new MyTreeItemData("Root item"));
 575     SetItemImage(rootId, TreeCtrlIcon_FolderOpened, wxTreeItemIcon_Expanded);
 576
 577     AddItemsRecursively(rootId, numChildren, depth, 0);
 578
 579     // set some colours/fonts for testing
 580     SetItemFont(rootId, *wxITALIC_FONT);
 581
 582     long cookie;
 583     wxTreeItemId id = GetFirstChild(rootId, cookie);
 584     SetItemTextColour(id, *wxBLUE);
 585
 586     id = GetNextChild(rootId, cookie);
 587     id = GetNextChild(rootId, cookie);
 588     SetItemTextColour(id, *wxRED);
 589     SetItemBackgroundColour(id, *wxLIGHT_GREY);
 590 }
 591
 592 void MyTreeCtrl::GetItemsRecursively(const wxTreeItemId& idParent, long cookie)
 593 {
 594     wxTreeItemId id;
 595
 596     if( cookie == -1 )
 597         id = GetFirstChild(idParent, cookie);
 598     else
 599         id = GetNextChild(idParent, cookie);
 600
 601     if(id <= 0)
 602         return;
 603
 604     wxString text = GetItemText(id);
 605     wxLogMessage(text);
 606
 607     if (ItemHasChildren(id))
 608         GetItemsRecursively(id,-1);
 609
 610     GetItemsRecursively(idParent, cookie);
 611 }
 612
 613 void MyTreeCtrl::DoToggleIcon(const wxTreeItemId& item)
 614 {
 615     int image = GetItemImage(item) == TreeCtrlIcon_Folder ? TreeCtrlIcon_File
 616                                                           : TreeCtrlIcon_Folder;
 617
 618     SetItemImage(item, image);
 619 }
 620
 621
 622 // avoid repetition
 623 #define TREE_EVENT_HANDLER(name)                            \
 624 void MyTreeCtrl::name(wxTreeEvent& WXUNUSED(event))         \
 625 {                                                           \
 626     wxLogMessage(#name);                                    \
 627 }
 628
 629 TREE_EVENT_HANDLER(OnBeginDrag)
 630 TREE_EVENT_HANDLER(OnBeginRDrag)
 631 TREE_EVENT_HANDLER(OnDeleteItem)
 632 TREE_EVENT_HANDLER(OnGetInfo)
 633 TREE_EVENT_HANDLER(OnSetInfo)
 634 TREE_EVENT_HANDLER(OnItemExpanded)
 635 TREE_EVENT_HANDLER(OnItemExpanding)
 636 TREE_EVENT_HANDLER(OnItemCollapsed)
 637 TREE_EVENT_HANDLER(OnSelChanged)
 638 TREE_EVENT_HANDLER(OnSelChanging)
 639
 640 #undef TREE_EVENT_HANDLER
 641
 642 void MyTreeCtrl::OnBeginLabelEdit(wxTreeEvent& event)
 643 {
 644     wxLogMessage("OnBeginLabelEdit");
 645
 646     // for testing, prevent this items label editing
 647     wxTreeItemId itemId = event.GetItem();
 648     if ( IsTestItem(itemId) )
 649     {
 650         wxMessageBox("You can't edit this item.");
 651
 652         event.Veto();
 653     }
 654 }
 655
 656 void MyTreeCtrl::OnEndLabelEdit(wxTreeEvent& event)
 657 {
 658     wxLogMessage("OnEndLabelEdit");
 659
 660     // don't allow anything except letters in the labels
 661     if ( !event.GetLabel().IsWord() )
 662     {
 663         wxMessageBox("The label should contain only letters.");
 664
 665         event.Veto();
 666     }
 667 }
 668
 669 void MyTreeCtrl::OnItemCollapsing(wxTreeEvent& event)
 670 {
 671     wxLogMessage("OnItemCollapsing");
 672
 673     // for testing, prevent the user from collapsing the first child folder
 674     wxTreeItemId itemId = event.GetItem();
 675     if ( IsTestItem(itemId) )
 676     {
 677         wxMessageBox("You can't collapse this item.");
 678
 679         event.Veto();
 680     }
 681 }
 682
 683 void MyTreeCtrl::OnTreeKeyDown(wxTreeEvent&WXUNUSED(event))
 684 {
 685     wxLogMessage("OnTreeKeyDown");
 686 }
 687
 688 void MyTreeCtrl::OnItemActivated(wxTreeEvent&WXUNUSED(event))
 689 {
 690     // show some info about this item
 691     wxTreeItemId itemId = GetSelection();
 692     MyTreeItemData *item = (MyTreeItemData *)GetItemData(itemId);
 693
 694     if ( item != NULL )
 695     {
 696         item->ShowInfo(this);
 697     }
 698
 699     wxLogMessage("OnItemActivated");
 700 }
 701
 702 void MyTreeCtrl::OnRMouseDClick(wxMouseEvent& event)
 703 {
 704     wxTreeItemId id = HitTest(event.GetPosition());
 705     if ( !id )
 706         wxLogMessage("No item under mouse");
 707     else
 708     {
 709         MyTreeItemData *item = (MyTreeItemData *)GetItemData(id);
 710         if ( item )
 711             wxLogMessage("Item '%s' under mouse", item->GetDesc());
 712     }
 713 }
 714
 715 static inline const char *Bool2String(bool b)
 716 {
 717     return b ? "" : "not ";
 718 }
 719
 720 void MyTreeItemData::ShowInfo(wxTreeCtrl *tree)
 721 {
 722     wxLogMessage("Item '%s': %sselected, %sexpanded, %sbold,\n"
 723                  "%u children (%u immediately under this item).",
 724                  m_desc.c_str(),
 725                  Bool2String(tree->IsSelected(GetId())),
 726                  Bool2String(tree->IsExpanded(GetId())),
 727                  Bool2String(tree->IsBold(GetId())),
 728                  tree->GetChildrenCount(GetId()),
 729                  tree->GetChildrenCount(GetId(), FALSE));
 730 }