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