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     wxTextCtrl *textCtrl = new wxTextCtrl(this, -1, "",
 210                                 wxDefaultPosition, wxDefaultSize,
 211                                 wxTE_MULTILINE | wxSUNKEN_BORDER);
 212
 213     wxLayoutConstraints *c = new wxLayoutConstraints;
 214     c->top.SameAs(this, wxTop);
 215     c->left.SameAs(this, wxLeft);
 216     c->right.SameAs(this, wxRight);
 217     c->height.PercentOf(this, wxHeight, 66);
 218     m_treeCtrl->SetConstraints(c);
 219
 220     c = new wxLayoutConstraints;
 221     c->top.Below(m_treeCtrl);
 222     c->left.SameAs(this, wxLeft);
 223     c->right.SameAs(this, wxRight);
 224     c->bottom.SameAs(this, wxBottom);
 225     textCtrl->SetConstraints(c);
 226     SetAutoLayout(TRUE);
 227
 228     // create a status bar with 3 panes
 229     CreateStatusBar(3);
 230     SetStatusText("", 0);
 231
 232 #ifdef __WXMOTIF__
 233     // For some reason, we get a memcpy crash in wxLogStream::DoLogStream
 234     // on gcc/wxMotif, if we use wxLogTextCtl. Maybe it's just gcc?
 235     delete wxLog::SetActiveTarget(new wxLogStderr);
 236 #else
 237     // set our text control as the log target
 238     wxLogTextCtrl *logWindow = new wxLogTextCtrl(textCtrl);
 239     delete wxLog::SetActiveTarget(logWindow);
 240 #endif
 241 }
 242
 243 MyFrame::~MyFrame()
 244 {
 245     delete wxLog::SetActiveTarget(NULL);
 246 }
 247
 248 void MyFrame::OnQuit(wxCommandEvent& WXUNUSED(event))
 249 {
 250     Close(TRUE);
 251 }
 252
 253 void MyFrame::OnAbout(wxCommandEvent& WXUNUSED(event))
 254 {
 255     wxMessageBox("Tree test sample\n"
 256                  "(c) Julian Smart 1997, Vadim Zeitlin 1998",
 257                  "About tree test",
 258                  wxOK | wxICON_INFORMATION, this);
 259 }
 260
 261 void MyFrame::OnRename(wxCommandEvent& WXUNUSED(event))
 262 {
 263     wxTreeItemId item = m_treeCtrl->GetSelection();
 264
 265     CHECK_ITEM( item );
 266
 267     // old code - now we edit in place
 268 #if 0
 269     static wxString s_text;
 270     s_text = wxGetTextFromUser("New name: ", "Tree sample question",
 271             s_text, this);
 272     if ( !s_text.IsEmpty() )
 273     {
 274         m_treeCtrl->SetItemText(item, s_text);
 275     }
 276 #endif // 0
 277
 278     // TODO demonstrate creating a custom edit control...
 279     (void)m_treeCtrl->EditLabel(item);
 280 }
 281
 282 void MyFrame::OnCount(wxCommandEvent& WXUNUSED(event))
 283 {
 284     wxTreeItemId item = m_treeCtrl->GetSelection();
 285
 286     CHECK_ITEM( item );
 287
 288     int i = m_treeCtrl->GetChildrenCount( item, FALSE );
 289
 290     wxLogMessage(wxT("%d children"), i);
 291 }
 292
 293 void MyFrame::OnCountRec(wxCommandEvent& WXUNUSED(event))
 294 {
 295     wxTreeItemId item = m_treeCtrl->GetSelection();
 296
 297     CHECK_ITEM( item );
 298
 299     int i = m_treeCtrl->GetChildrenCount( item );
 300
 301     wxLogMessage(wxT("%d children"), i);
 302 }
 303
 304 void MyFrame::DoSort(bool reverse)
 305 {
 306     wxTreeItemId item = m_treeCtrl->GetSelection();
 307
 308     CHECK_ITEM( item );
 309
 310     m_treeCtrl->DoSortChildren(item, reverse);
 311 }
 312
 313 void MyFrame::OnDump(wxCommandEvent& WXUNUSED(event))
 314 {
 315     wxTreeItemId root = m_treeCtrl->GetSelection();
 316
 317     CHECK_ITEM( root );
 318
 319     m_treeCtrl->GetItemsRecursively(root, -1);
 320 }
 321
 322 #ifndef NO_MULTIPLE_SELECTION
 323
 324 void MyFrame::OnDumpSelected(wxCommandEvent& WXUNUSED(event))
 325 {
 326     wxArrayTreeItemIds array;
 327
 328     size_t count = m_treeCtrl->GetSelections(array);
 329     wxLogMessage(wxT("%u items selected"), count);
 330
 331     for ( size_t n = 0; n < count; n++ )
 332     {
 333         wxLogMessage("\t%s", m_treeCtrl->GetItemText(array.Item(n)).c_str());
 334     }
 335 }
 336
 337 void MyFrame::OnSelect(wxCommandEvent& event)
 338 {
 339     m_treeCtrl->SelectItem(m_treeCtrl->GetSelection());
 340 }
 341
 342 void MyFrame::OnUnselect(wxCommandEvent& event)
 343 {
 344     m_treeCtrl->UnselectAll();
 345 }
 346
 347 #endif // NO_MULTIPLE_SELECTION
 348
 349 void MyFrame::DoSetBold(bool bold)
 350 {
 351     wxTreeItemId item = m_treeCtrl->GetSelection();
 352
 353     CHECK_ITEM( item );
 354
 355     m_treeCtrl->SetItemBold(item, bold);
 356 }
 357
 358 void MyFrame::OnDelete(wxCommandEvent& WXUNUSED(event))
 359 {
 360     wxTreeItemId item = m_treeCtrl->GetSelection();
 361
 362     CHECK_ITEM( item );
 363
 364     m_treeCtrl->Delete(item);
 365 }
 366
 367 void MyFrame::OnDeleteChildren(wxCommandEvent& WXUNUSED(event))
 368 {
 369     wxTreeItemId item = m_treeCtrl->GetSelection();
 370
 371     CHECK_ITEM( item );
 372
 373     m_treeCtrl->DeleteChildren(item);
 374 }
 375
 376 void MyFrame::OnDeleteAll(wxCommandEvent& WXUNUSED(event))
 377 {
 378     m_treeCtrl->DeleteAllItems();
 379 }
 380
 381 void MyFrame::OnRecreate(wxCommandEvent& event)
 382 {
 383     OnDeleteAll(event);
 384     m_treeCtrl->AddTestItemsToTree(3, 2);
 385 }
 386
 387 void MyFrame::OnCollapseAndReset(wxCommandEvent& event)
 388 {
 389     m_treeCtrl->CollapseAndReset(m_treeCtrl->GetRootItem());
 390 }
 391
 392 void MyFrame::OnEnsureVisible(wxCommandEvent& event)
 393 {
 394     m_treeCtrl->DoEnsureVisible();
 395 }
 396
 397 void MyFrame::OnInsertItem(wxCommandEvent& WXUNUSED(event))
 398 {
 399     m_treeCtrl->InsertItem(m_treeCtrl->GetRootItem(), 1, "2nd item");
 400 }
 401
 402 void MyFrame::OnAddItem(wxCommandEvent& WXUNUSED(event))
 403 {
 404     static int s_num = 0;
 405
 406     wxString text;
 407     text.Printf("Item #%d", ++s_num);
 408
 409     m_treeCtrl->AppendItem(m_treeCtrl->GetRootItem(),
 410                            text /*,
 411                            MyTreeCtrl::TreeCtrlIcon_File */ );
 412 }
 413
 414 void MyFrame::OnIncIndent(wxCommandEvent& WXUNUSED(event))
 415 {
 416     unsigned int indent = m_treeCtrl->GetIndent();
 417     if (indent < 100)
 418         m_treeCtrl->SetIndent( indent+5 );
 419 }
 420
 421 void MyFrame::OnDecIndent(wxCommandEvent& WXUNUSED(event))
 422 {
 423     unsigned int indent = m_treeCtrl->GetIndent();
 424     if (indent > 10)
 425         m_treeCtrl->SetIndent( indent-5 );
 426 }
 427
 428 void MyFrame::OnIncSpacing(wxCommandEvent& WXUNUSED(event))
 429 {
 430     unsigned int indent = m_treeCtrl->GetSpacing();
 431     if (indent < 100)
 432         m_treeCtrl->SetSpacing( indent+5 );
 433 }
 434
 435 void MyFrame::OnDecSpacing(wxCommandEvent& WXUNUSED(event))
 436 {
 437     unsigned int indent = m_treeCtrl->GetSpacing();
 438     if (indent > 10)
 439         m_treeCtrl->SetSpacing( indent-5 );
 440 }
 441
 442 void MyFrame::OnToggleIcon(wxCommandEvent& WXUNUSED(event))
 443 {
 444     wxTreeItemId item = m_treeCtrl->GetSelection();
 445
 446     CHECK_ITEM( item );
 447
 448     m_treeCtrl->DoToggleIcon(item);
 449 }
 450
 451 // MyTreeCtrl implementation
 452 IMPLEMENT_DYNAMIC_CLASS(MyTreeCtrl, wxTreeCtrl)
 453
 454 MyTreeCtrl::MyTreeCtrl(wxWindow *parent, const wxWindowID id,
 455                        const wxPoint& pos, const wxSize& size,
 456                        long style)
 457           : wxTreeCtrl(parent, id, pos, size, style)
 458 {
 459 #ifndef NO_VARIABLE_HEIGHT
 460 #if wxUSE_LIBJPEG
 461     wxImage::AddHandler(new wxJPEGHandler);
 462     wxImage image;
 463
 464     image.LoadFile(wxString("horse.jpg"), wxBITMAP_TYPE_JPEG );
 465 #endif
 466 #endif
 467
 468     m_reverseSort = FALSE;
 469
 470     // Make an image list containing small icons
 471     m_imageListNormal = new wxImageList(16, 16, TRUE);
 472
 473     // should correspond to TreeCtrlIcon_xxx enum
 474 #if defined(__WXMSW__) && defined(__WIN16__)
 475     // This is required in 16-bit Windows mode only because we can't load a specific (16x16)
 476     // icon image, so it comes out stretched
 477 #  ifndef NO_VARIABLE_HEIGHT
 478     m_imageListNormal->Add(image.ConvertToBitmap());
 479 #  else
 480     m_imageListNormal->Add(wxBitmap("bitmap1", wxBITMAP_TYPE_BMP_RESOURCE));
 481 #  endif
 482     m_imageListNormal->Add(wxBitmap("bitmap2", wxBITMAP_TYPE_BMP_RESOURCE));
 483     m_imageListNormal->Add(wxBitmap("bitmap3", wxBITMAP_TYPE_BMP_RESOURCE));
 484     m_imageListNormal->Add(wxBitmap("bitmap4", wxBITMAP_TYPE_BMP_RESOURCE));
 485     m_imageListNormal->Add(wxBitmap("bitmap5", wxBITMAP_TYPE_BMP_RESOURCE));
 486 #else
 487 #  ifndef NO_VARIABLE_HEIGHT
 488     m_imageListNormal->Add(image.ConvertToBitmap());
 489 #  else
 490     m_imageListNormal->Add(wxICON(icon1));
 491 #  endif
 492     m_imageListNormal->Add(wxICON(icon2));
 493     m_imageListNormal->Add(wxICON(icon3));
 494     m_imageListNormal->Add(wxICON(icon4));
 495     m_imageListNormal->Add(wxICON(icon5));
 496 #endif
 497
 498     SetImageList(m_imageListNormal);
 499
 500     // Add some items to the tree
 501     AddTestItemsToTree(3, 2);
 502 }
 503
 504 MyTreeCtrl::~MyTreeCtrl()
 505 {
 506     delete m_imageListNormal;
 507 }
 508
 509 int MyTreeCtrl::OnCompareItems(const wxTreeItemId& item1,
 510                                const wxTreeItemId& item2)
 511 {
 512     if ( m_reverseSort )
 513     {
 514         // just exchange 1st and 2nd items
 515         return wxTreeCtrl::OnCompareItems(item2, item1);
 516     }
 517     else
 518     {
 519         return wxTreeCtrl::OnCompareItems(item1, item2);
 520     }
 521 }
 522
 523 void MyTreeCtrl::AddItemsRecursively(const wxTreeItemId& idParent,
 524                                      size_t numChildren,
 525                                      size_t depth,
 526                                      size_t folder)
 527 {
 528     if ( depth > 0 )
 529     {
 530         bool hasChildren = depth > 1;
 531
 532         wxString str;
 533         for ( size_t n = 0; n < numChildren; n++ )
 534         {
 535             // at depth 1 elements won't have any more children
 536             if ( hasChildren )
 537                 str.Printf("%s child %d", "Folder", n + 1);
 538             else
 539                 str.Printf("%s child %d.%d", "File", folder, n + 1);
 540
 541             // here we pass to AppendItem() normal and selected item images (we
 542             // suppose that selected image follows the normal one in the enum)
 543             int image = depth == 1 ? TreeCtrlIcon_File : TreeCtrlIcon_Folder;
 544             wxTreeItemId id = AppendItem(idParent, str, image, image + 1,
 545                                          new MyTreeItemData(str));
 546
 547             // and now we also set the expanded one (only for the folders)
 548             if ( hasChildren )
 549             {
 550                 SetItemImage(id, TreeCtrlIcon_FolderOpened,
 551                              wxTreeItemIcon_Expanded);
 552             }
 553
 554             // remember the last child for OnEnsureVisible()
 555             if ( !hasChildren && n == numChildren - 1 )
 556             {
 557                 m_lastItem = id;
 558             }
 559
 560             AddItemsRecursively(id, numChildren, depth - 1, n + 1);
 561         }
 562     }
 563     //else: done!
 564 }
 565
 566 void MyTreeCtrl::AddTestItemsToTree(size_t numChildren,
 567                                     size_t depth)
 568 {
 569     wxTreeItemId rootId = AddRoot("Root",
 570                                   TreeCtrlIcon_Folder, TreeCtrlIcon_Folder,
 571                                   new MyTreeItemData("Root item"));
 572     SetItemImage(rootId, TreeCtrlIcon_FolderOpened, wxTreeItemIcon_Expanded);
 573
 574     AddItemsRecursively(rootId, numChildren, depth, 0);
 575
 576     // set some colours/fonts for testing
 577     SetItemFont(rootId, *wxITALIC_FONT);
 578
 579     long cookie;
 580     wxTreeItemId id = GetFirstChild(rootId, cookie);
 581     SetItemTextColour(id, *wxBLUE);
 582
 583     id = GetNextChild(rootId, cookie);
 584     id = GetNextChild(rootId, cookie);
 585     SetItemTextColour(id, *wxRED);
 586     SetItemBackgroundColour(id, *wxLIGHT_GREY);
 587 }
 588
 589 void MyTreeCtrl::GetItemsRecursively(const wxTreeItemId& idParent, long cookie)
 590 {
 591     wxTreeItemId id;
 592
 593     if( cookie == -1 )
 594         id = GetFirstChild(idParent, cookie);
 595     else
 596         id = GetNextChild(idParent, cookie);
 597
 598     if(id <= 0)
 599         return;
 600
 601     wxString text = GetItemText(id);
 602     wxLogMessage(text);
 603
 604     if (ItemHasChildren(id))
 605         GetItemsRecursively(id,-1);
 606
 607     GetItemsRecursively(idParent, cookie);
 608 }
 609
 610 void MyTreeCtrl::DoToggleIcon(const wxTreeItemId& item)
 611 {
 612     int image = GetItemImage(item) == TreeCtrlIcon_Folder ? TreeCtrlIcon_File
 613                                                           : TreeCtrlIcon_Folder;
 614
 615     SetItemImage(item, image);
 616 }
 617
 618
 619 // avoid repetition
 620 #define TREE_EVENT_HANDLER(name)                            \
 621 void MyTreeCtrl::name(wxTreeEvent& WXUNUSED(event))         \
 622 {                                                           \
 623     wxLogMessage(#name);                                    \
 624 }
 625
 626 TREE_EVENT_HANDLER(OnBeginDrag)
 627 TREE_EVENT_HANDLER(OnBeginRDrag)
 628 TREE_EVENT_HANDLER(OnDeleteItem)
 629 TREE_EVENT_HANDLER(OnGetInfo)
 630 TREE_EVENT_HANDLER(OnSetInfo)
 631 TREE_EVENT_HANDLER(OnItemExpanded)
 632 TREE_EVENT_HANDLER(OnItemExpanding)
 633 TREE_EVENT_HANDLER(OnItemCollapsed)
 634 TREE_EVENT_HANDLER(OnSelChanged)
 635 TREE_EVENT_HANDLER(OnSelChanging)
 636
 637 #undef TREE_EVENT_HANDLER
 638
 639 void MyTreeCtrl::OnBeginLabelEdit(wxTreeEvent& event)
 640 {
 641     wxLogMessage("OnBeginLabelEdit");
 642
 643     // for testing, prevent this items label editing
 644     wxTreeItemId itemId = event.GetItem();
 645     if ( IsTestItem(itemId) )
 646     {
 647         wxMessageBox("You can't edit this item.");
 648
 649         event.Veto();
 650     }
 651 }
 652
 653 void MyTreeCtrl::OnEndLabelEdit(wxTreeEvent& event)
 654 {
 655     wxLogMessage("OnEndLabelEdit");
 656
 657     // don't allow anything except letters in the labels
 658     if ( !event.GetLabel().IsWord() )
 659     {
 660         wxMessageBox("The label should contain only letters.");
 661
 662         event.Veto();
 663     }
 664 }
 665
 666 void MyTreeCtrl::OnItemCollapsing(wxTreeEvent& event)
 667 {
 668     wxLogMessage("OnItemCollapsing");
 669
 670     // for testing, prevent the user from collapsing the first child folder
 671     wxTreeItemId itemId = event.GetItem();
 672     if ( IsTestItem(itemId) )
 673     {
 674         wxMessageBox("You can't collapse this item.");
 675
 676         event.Veto();
 677     }
 678 }
 679
 680 void MyTreeCtrl::OnTreeKeyDown(wxTreeEvent&WXUNUSED(event))
 681 {
 682     wxLogMessage("OnTreeKeyDown");
 683 }
 684
 685 void MyTreeCtrl::OnItemActivated(wxTreeEvent&WXUNUSED(event))
 686 {
 687     // show some info about this item
 688     wxTreeItemId itemId = GetSelection();
 689     MyTreeItemData *item = (MyTreeItemData *)GetItemData(itemId);
 690
 691     if ( item != NULL )
 692     {
 693         item->ShowInfo(this);
 694     }
 695
 696     wxLogMessage("OnItemActivated");
 697 }
 698
 699 void MyTreeCtrl::OnRMouseDClick(wxMouseEvent& event)
 700 {
 701     wxTreeItemId id = HitTest(event.GetPosition());
 702     if ( !id )
 703         wxLogMessage("No item under mouse");
 704     else
 705     {
 706         MyTreeItemData *item = (MyTreeItemData *)GetItemData(id);
 707         if ( item )
 708             wxLogMessage("Item '%s' under mouse", item->GetDesc());
 709     }
 710 }
 711
 712 static inline const char *Bool2String(bool b)
 713 {
 714     return b ? "" : "not ";
 715 }
 716
 717 void MyTreeItemData::ShowInfo(wxTreeCtrl *tree)
 718 {
 719     wxLogMessage("Item '%s': %sselected, %sexpanded, %sbold,\n"
 720                  "%u children (%u immediately under this item).",
 721                  m_desc.c_str(),
 722                  Bool2String(tree->IsSelected(GetId())),
 723                  Bool2String(tree->IsExpanded(GetId())),
 724                  Bool2String(tree->IsBold(GetId())),
 725                  tree->GetChildrenCount(GetId()),
 726                  tree->GetChildrenCount(GetId(), FALSE));
 727 }