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     //#define NO_MULTIPLE_SELECTION
  38     #define NO_VARIABLE_HEIGHT
  39 #endif
  40
  41 #include "treetest.h"
  42
  43 // under Windows the icons are in the .rc file
  44 #ifndef __WXMSW__
  45   #include "icon1.xpm"
  46   #include "icon2.xpm"
  47   #include "mondrian.xpm"
  48 #endif
  49
  50 // verify that the item is ok and insult the user if it is not
  51 #define CHECK_ITEM( item ) if ( !item.IsOk() ) {                            \
  52                              wxMessageBox("Please select some item first!", \
  53                                           "Tree sample error",              \
  54                                           wxOK | wxICON_EXCLAMATION,        \
  55                                           this);                            \
  56                              return;                                        \
  57                            }
  58
  59 BEGIN_EVENT_TABLE(MyFrame, wxFrame)
  60     EVT_MENU(TreeTest_Quit, MyFrame::OnQuit)
  61     EVT_MENU(TreeTest_About, MyFrame::OnAbout)
  62     EVT_MENU(TreeTest_Dump, MyFrame::OnDump)
  63 #ifndef NO_MULTIPLE_SELECTION
  64     EVT_MENU(TreeTest_DumpSelected, MyFrame::OnDumpSelected)
  65     EVT_MENU(TreeTest_Select, MyFrame::OnSelect)
  66     EVT_MENU(TreeTest_Unselect, MyFrame::OnUnselect)
  67 #endif // NO_MULTIPLE_SELECTION
  68     EVT_MENU(TreeTest_Rename, MyFrame::OnRename)
  69     EVT_MENU(TreeTest_Sort, MyFrame::OnSort)
  70     EVT_MENU(TreeTest_SortRev, MyFrame::OnSortRev)
  71     EVT_MENU(TreeTest_Bold, MyFrame::OnSetBold)
  72     EVT_MENU(TreeTest_UnBold, MyFrame::OnClearBold)
  73     EVT_MENU(TreeTest_Delete, MyFrame::OnDelete)
  74     EVT_MENU(TreeTest_DeleteChildren, MyFrame::OnDeleteChildren)
  75     EVT_MENU(TreeTest_DeleteAll, MyFrame::OnDeleteAll)
  76     EVT_MENU(TreeTest_Recreate, MyFrame::OnRecreate)
  77     EVT_MENU(TreeTest_CollapseAndReset, MyFrame::OnCollapseAndReset)
  78     EVT_MENU(TreeTest_EnsureVisible, MyFrame::OnEnsureVisible)
  79     EVT_MENU(TreeTest_AddItem, MyFrame::OnAddItem)
  80     EVT_MENU(TreeTest_IncIndent, MyFrame::OnIncIndent)
  81     EVT_MENU(TreeTest_DecIndent, MyFrame::OnDecIndent)
  82     EVT_MENU(TreeTest_IncSpacing, MyFrame::OnIncSpacing)
  83     EVT_MENU(TreeTest_DecSpacing, MyFrame::OnDecSpacing)
  84     EVT_MENU(TreeTest_ToggleIcon, MyFrame::OnToggleIcon)
  85 END_EVENT_TABLE()
  86
  87 BEGIN_EVENT_TABLE(MyTreeCtrl, wxTreeCtrl)
  88     EVT_TREE_BEGIN_DRAG(TreeTest_Ctrl, MyTreeCtrl::OnBeginDrag)
  89     EVT_TREE_BEGIN_RDRAG(TreeTest_Ctrl, MyTreeCtrl::OnBeginRDrag)
  90     EVT_TREE_BEGIN_LABEL_EDIT(TreeTest_Ctrl, MyTreeCtrl::OnBeginLabelEdit)
  91     EVT_TREE_END_LABEL_EDIT(TreeTest_Ctrl, MyTreeCtrl::OnEndLabelEdit)
  92     EVT_TREE_DELETE_ITEM(TreeTest_Ctrl, MyTreeCtrl::OnDeleteItem)
  93     EVT_TREE_GET_INFO(TreeTest_Ctrl, MyTreeCtrl::OnGetInfo)
  94     EVT_TREE_SET_INFO(TreeTest_Ctrl, MyTreeCtrl::OnSetInfo)
  95     EVT_TREE_ITEM_EXPANDED(TreeTest_Ctrl, MyTreeCtrl::OnItemExpanded)
  96     EVT_TREE_ITEM_EXPANDING(TreeTest_Ctrl, MyTreeCtrl::OnItemExpanding)
  97     EVT_TREE_ITEM_COLLAPSED(TreeTest_Ctrl, MyTreeCtrl::OnItemCollapsed)
  98     EVT_TREE_ITEM_COLLAPSING(TreeTest_Ctrl, MyTreeCtrl::OnItemCollapsing)
  99     EVT_TREE_SEL_CHANGED(TreeTest_Ctrl, MyTreeCtrl::OnSelChanged)
 100     EVT_TREE_SEL_CHANGING(TreeTest_Ctrl, MyTreeCtrl::OnSelChanging)
 101     EVT_TREE_KEY_DOWN(TreeTest_Ctrl, MyTreeCtrl::OnTreeKeyDown)
 102     EVT_TREE_ITEM_ACTIVATED(TreeTest_Ctrl, MyTreeCtrl::OnItemActivated)
 103     EVT_RIGHT_DCLICK(MyTreeCtrl::OnRMouseDClick)
 104 END_EVENT_TABLE()
 105
 106 IMPLEMENT_APP(MyApp)
 107
 108 bool MyApp::OnInit()
 109 {
 110     // Create the main frame window
 111     MyFrame *frame = new MyFrame("wxTreeCtrl Test", 50, 50, 450, 340);
 112
 113     // Show the frame
 114     frame->Show(TRUE);
 115     SetTopWindow(frame);
 116
 117     return TRUE;
 118 }
 119
 120
 121 // My frame constructor
 122 MyFrame::MyFrame(const wxString& title, int x, int y, int w, int h)
 123        : wxFrame((wxFrame *)NULL, -1, title, wxPoint(x, y), wxSize(w, h))
 124 {
 125     // This reduces flicker effects - even better would be to define
 126     // OnEraseBackground to do nothing. When the tree control's scrollbars are
 127     // show or hidden, the frame is sent a background erase event.
 128     SetBackgroundColour(wxColour(255, 255, 255));
 129
 130     // Give it an icon
 131     SetIcon(wxICON(mondrian));
 132
 133     // Make a menubar
 134     wxMenu *file_menu = new wxMenu,
 135            *tree_menu = new wxMenu,
 136            *item_menu = new wxMenu;
 137
 138     file_menu->Append(TreeTest_About, "&About...");
 139     file_menu->AppendSeparator();
 140     file_menu->Append(TreeTest_Quit, "E&xit");
 141
 142     tree_menu->Append(TreeTest_Recreate, "&Recreate the tree");
 143     tree_menu->Append(TreeTest_CollapseAndReset, "C&ollapse and reset");
 144     tree_menu->AppendSeparator();
 145     tree_menu->Append(TreeTest_AddItem, "Append a &new item");
 146     tree_menu->Append(TreeTest_Delete, "&Delete this item");
 147     tree_menu->Append(TreeTest_DeleteChildren, "Delete &children");
 148     tree_menu->Append(TreeTest_DeleteAll, "Delete &all items");
 149     tree_menu->AppendSeparator();
 150     tree_menu->Append(TreeTest_Sort, "Sort children of current item");
 151     tree_menu->Append(TreeTest_SortRev, "Sort in reversed order");
 152     tree_menu->AppendSeparator();
 153     tree_menu->Append(TreeTest_EnsureVisible, "Make the last item &visible");
 154     tree_menu->AppendSeparator();
 155     tree_menu->Append(TreeTest_IncIndent, "Add 5 points to indentation\tAlt-I");
 156     tree_menu->Append(TreeTest_DecIndent, "Reduce indentation by 5 points\tAlt-R");
 157     tree_menu->AppendSeparator();
 158     tree_menu->Append(TreeTest_IncSpacing, "Add 5 points to spacing\tCtrl-I");
 159     tree_menu->Append(TreeTest_DecSpacing, "Reduce spacing by 5 points\tCtrl-R");
 160
 161     item_menu->Append(TreeTest_Dump, "&Dump item children");
 162     item_menu->Append(TreeTest_Rename, "&Rename item...");
 163
 164     item_menu->AppendSeparator();
 165     item_menu->Append(TreeTest_Bold, "Make item &bold");
 166     item_menu->Append(TreeTest_UnBold, "Make item &not bold");
 167     item_menu->AppendSeparator();
 168     item_menu->Append(TreeTest_ToggleIcon, "Toggle the items &icon");
 169
 170 #ifndef NO_MULTIPLE_SELECTION
 171     item_menu->AppendSeparator();
 172     item_menu->Append(TreeTest_DumpSelected, "Dump selected items\tAlt-D");
 173     item_menu->Append(TreeTest_Select, "Select current item\tAlt-S");
 174     item_menu->Append(TreeTest_Unselect, "Unselect everything\tAlt-U");
 175 #endif
 176
 177     wxMenuBar *menu_bar = new wxMenuBar;
 178     menu_bar->Append(file_menu, "&File");
 179     menu_bar->Append(tree_menu, "&Tree");
 180     menu_bar->Append(item_menu, "&Item");
 181     SetMenuBar(menu_bar);
 182
 183     m_treeCtrl = new MyTreeCtrl(this, TreeTest_Ctrl,
 184                                 wxDefaultPosition, wxDefaultSize,
 185                                 wxTR_HAS_BUTTONS |
 186                                 wxTR_EDIT_LABELS |
 187                                 wxTR_MULTIPLE |
 188                                 wxTR_HAS_VARIABLE_ROW_HEIGHT |
 189                                 wxSUNKEN_BORDER);
 190     wxTextCtrl *textCtrl = new wxTextCtrl(this, -1, "",
 191                                 wxDefaultPosition, wxDefaultSize,
 192                                 wxTE_MULTILINE | wxSUNKEN_BORDER);
 193
 194     wxLayoutConstraints *c = new wxLayoutConstraints;
 195     c->top.SameAs(this, wxTop);
 196     c->left.SameAs(this, wxLeft);
 197     c->right.SameAs(this, wxRight);
 198     c->height.PercentOf(this, wxHeight, 66);
 199     m_treeCtrl->SetConstraints(c);
 200
 201     c = new wxLayoutConstraints;
 202     c->top.Below(m_treeCtrl);
 203     c->left.SameAs(this, wxLeft);
 204     c->right.SameAs(this, wxRight);
 205     c->bottom.SameAs(this, wxBottom);
 206     textCtrl->SetConstraints(c);
 207     SetAutoLayout(TRUE);
 208
 209     // create a status bar with 3 panes
 210     CreateStatusBar(3);
 211     SetStatusText("", 0);
 212
 213 #ifdef __WXMOTIF__
 214     // For some reason, we get a memcpy crash in wxLogStream::DoLogStream
 215     // on gcc/wxMotif, if we use wxLogTextCtl. Maybe it's just gcc?
 216     delete wxLog::SetActiveTarget(new wxLogStderr);
 217 #else
 218     // set our text control as the log target
 219     wxLogTextCtrl *logWindow = new wxLogTextCtrl(textCtrl);
 220     delete wxLog::SetActiveTarget(logWindow);
 221 #endif
 222 }
 223
 224 MyFrame::~MyFrame()
 225 {
 226     delete wxLog::SetActiveTarget(NULL);
 227 }
 228
 229 void MyFrame::OnQuit(wxCommandEvent& WXUNUSED(event))
 230 {
 231     Close(TRUE);
 232 }
 233
 234 void MyFrame::OnAbout(wxCommandEvent& WXUNUSED(event))
 235 {
 236     wxMessageBox("Tree test sample\n"
 237                  "(c) Julian Smart 1997, Vadim Zeitlin 1998",
 238                  "About tree test",
 239                  wxOK | wxICON_INFORMATION, this);
 240 }
 241
 242 void MyFrame::OnRename(wxCommandEvent& WXUNUSED(event))
 243 {
 244     wxTreeItemId item = m_treeCtrl->GetSelection();
 245
 246     CHECK_ITEM( item );
 247
 248     // old code - now we edit in place
 249 #if 0
 250     static wxString s_text;
 251     s_text = wxGetTextFromUser("New name: ", "Tree sample question",
 252             s_text, this);
 253     if ( !s_text.IsEmpty() )
 254     {
 255         m_treeCtrl->SetItemText(item, s_text);
 256     }
 257 #endif // 0
 258
 259     // TODO demonstrate creating a custom edit control...
 260     (void)m_treeCtrl->EditLabel(item);
 261 }
 262
 263 void MyFrame::DoSort(bool reverse)
 264 {
 265     wxTreeItemId item = m_treeCtrl->GetSelection();
 266
 267     CHECK_ITEM( item );
 268
 269     m_treeCtrl->DoSortChildren(item, reverse);
 270 }
 271
 272 void MyFrame::OnDump(wxCommandEvent& WXUNUSED(event))
 273 {
 274     wxTreeItemId root = m_treeCtrl->GetSelection();
 275
 276     CHECK_ITEM( root );
 277
 278     m_treeCtrl->GetItemsRecursively(root, -1);
 279 }
 280
 281 #ifndef NO_MULTIPLE_SELECTION
 282
 283 void MyFrame::OnDumpSelected(wxCommandEvent& WXUNUSED(event))
 284 {
 285     wxArrayTreeItemIds array;
 286
 287     size_t count = m_treeCtrl->GetSelections(array);
 288     wxLogMessage(_T("%u items selected"), count);
 289
 290     for ( size_t n = 0; n < count; n++ )
 291     {
 292         wxLogMessage("\t%s", m_treeCtrl->GetItemText(array.Item(n)).c_str());
 293     }
 294 }
 295
 296 void MyFrame::OnSelect(wxCommandEvent& event)
 297 {
 298     m_treeCtrl->SelectItem(m_treeCtrl->GetSelection());
 299 }
 300
 301 void MyFrame::OnUnselect(wxCommandEvent& event)
 302 {
 303     m_treeCtrl->UnselectAll();
 304 }
 305
 306 #endif // NO_MULTIPLE_SELECTION
 307
 308 void MyFrame::DoSetBold(bool bold)
 309 {
 310     wxTreeItemId item = m_treeCtrl->GetSelection();
 311
 312     CHECK_ITEM( item );
 313
 314     m_treeCtrl->SetItemBold(item, bold);
 315 }
 316
 317 void MyFrame::OnDelete(wxCommandEvent& WXUNUSED(event))
 318 {
 319     wxTreeItemId item = m_treeCtrl->GetSelection();
 320
 321     CHECK_ITEM( item );
 322
 323     m_treeCtrl->Delete(item);
 324 }
 325
 326 void MyFrame::OnDeleteChildren(wxCommandEvent& WXUNUSED(event))
 327 {
 328     wxTreeItemId item = m_treeCtrl->GetSelection();
 329
 330     CHECK_ITEM( item );
 331
 332     m_treeCtrl->DeleteChildren(item);
 333 }
 334
 335 void MyFrame::OnDeleteAll(wxCommandEvent& WXUNUSED(event))
 336 {
 337     m_treeCtrl->DeleteAllItems();
 338 }
 339
 340 void MyFrame::OnRecreate(wxCommandEvent& event)
 341 {
 342     OnDeleteAll(event);
 343     m_treeCtrl->AddTestItemsToTree(3, 2);
 344 }
 345
 346 void MyFrame::OnCollapseAndReset(wxCommandEvent& event)
 347 {
 348     m_treeCtrl->CollapseAndReset(m_treeCtrl->GetRootItem());
 349 }
 350
 351 void MyFrame::OnEnsureVisible(wxCommandEvent& event)
 352 {
 353     m_treeCtrl->DoEnsureVisible();
 354 }
 355
 356 void MyFrame::OnAddItem(wxCommandEvent& WXUNUSED(event))
 357 {
 358     static int s_num = 0;
 359
 360     wxString text;
 361     text.Printf("Item #%d", ++s_num);
 362
 363     m_treeCtrl->AppendItem(m_treeCtrl->GetRootItem(),
 364                            text /*,
 365                            MyTreeCtrl::TreeCtrlIcon_File */ );
 366 }
 367
 368 void MyFrame::OnIncIndent(wxCommandEvent& WXUNUSED(event))
 369 {
 370     unsigned int indent = m_treeCtrl->GetIndent();
 371     if (indent < 100)
 372         m_treeCtrl->SetIndent( indent+5 );
 373 }
 374
 375 void MyFrame::OnDecIndent(wxCommandEvent& WXUNUSED(event))
 376 {
 377     unsigned int indent = m_treeCtrl->GetIndent();
 378     if (indent > 10)
 379         m_treeCtrl->SetIndent( indent-5 );
 380 }
 381
 382 void MyFrame::OnIncSpacing(wxCommandEvent& WXUNUSED(event))
 383 {
 384     unsigned int indent = m_treeCtrl->GetSpacing();
 385     if (indent < 100)
 386         m_treeCtrl->SetSpacing( indent+5 );
 387 }
 388
 389 void MyFrame::OnDecSpacing(wxCommandEvent& WXUNUSED(event))
 390 {
 391     unsigned int indent = m_treeCtrl->GetSpacing();
 392     if (indent > 10)
 393         m_treeCtrl->SetSpacing( indent-5 );
 394 }
 395
 396 void MyFrame::OnToggleIcon(wxCommandEvent& WXUNUSED(event))
 397 {
 398     wxTreeItemId item = m_treeCtrl->GetSelection();
 399
 400     CHECK_ITEM( item );
 401
 402     m_treeCtrl->DoToggleIcon(item);
 403 }
 404
 405 // MyTreeCtrl implementation
 406 IMPLEMENT_DYNAMIC_CLASS(MyTreeCtrl, wxTreeCtrl)
 407
 408 MyTreeCtrl::MyTreeCtrl(wxWindow *parent, const wxWindowID id,
 409                        const wxPoint& pos, const wxSize& size,
 410                        long style)
 411           : wxTreeCtrl(parent, id, pos, size, style)
 412 {
 413 #if (USE_TR_HAS_VARIABLE_ROW_HIGHT && wxUSE_LIBJPEG)
 414     wxImage::AddHandler(new wxJPEGHandler);
 415     wxImage image;
 416
 417     image.LoadFile(wxString("horse.jpg"), wxBITMAP_TYPE_JPEG );
 418 #endif
 419
 420     m_reverseSort = FALSE;
 421
 422     // Make an image list containing small icons
 423     m_imageListNormal = new wxImageList(16, 16, TRUE);
 424
 425     // should correspond to TreeCtrlIcon_xxx enum
 426 #if defined(__WXMSW__) && defined(__WIN16__)
 427     // This is required in 16-bit Windows mode only because we can't load a specific (16x16)
 428     // icon image, so it comes out stretched
 429 #  if USE_TR_HAS_VARIABLE_ROW_HIGHT
 430     m_imageListNormal->Add(image.ConvertToBitmap());
 431 #  else
 432     m_imageListNormal->Add(wxBitmap("bitmap1", wxBITMAP_TYPE_BMP_RESOURCE));
 433 #  endif
 434     m_imageListNormal->Add(wxBitmap("bitmap2", wxBITMAP_TYPE_BMP_RESOURCE));
 435 #else
 436 #  if USE_TR_HAS_VARIABLE_ROW_HIGHT
 437     m_imageListNormal->Add(image.ConvertToBitmap());
 438 #  else
 439     m_imageListNormal->Add(wxICON(icon1));
 440 #  endif
 441     m_imageListNormal->Add(wxICON(icon2));
 442 #endif
 443
 444     SetImageList(m_imageListNormal);
 445
 446     // Add some items to the tree
 447     AddTestItemsToTree(3, 2);
 448 }
 449
 450 MyTreeCtrl::~MyTreeCtrl()
 451 {
 452     delete m_imageListNormal;
 453 }
 454
 455 int MyTreeCtrl::OnCompareItems(const wxTreeItemId& item1,
 456                                const wxTreeItemId& item2)
 457 {
 458     if ( m_reverseSort )
 459     {
 460         // just exchange 1st and 2nd items
 461         return wxTreeCtrl::OnCompareItems(item2, item1);
 462     }
 463     else
 464     {
 465         return wxTreeCtrl::OnCompareItems(item1, item2);
 466     }
 467 }
 468
 469 void MyTreeCtrl::AddItemsRecursively(const wxTreeItemId& idParent,
 470                                      size_t numChildren,
 471                                      size_t depth,
 472                                      size_t folder)
 473 {
 474     if ( depth > 0 )
 475     {
 476         wxString str;
 477         for ( size_t n = 0; n < numChildren; n++ )
 478         {
 479             // at depth 1 elements won't have any more children
 480             if (depth == 1)
 481                 str.Printf("%s child %d.%d", "File", folder, n + 1);
 482             else
 483                 str.Printf("%s child %d", "Folder", n + 1);
 484
 485             int image = depth == 1 ? TreeCtrlIcon_File : TreeCtrlIcon_Folder;
 486             wxTreeItemId id = AppendItem(idParent, str, image, image,
 487                                          new MyTreeItemData(str));
 488
 489             // remember the last child for OnEnsureVisible()
 490             if ( depth == 1 && n == numChildren - 1 )
 491             {
 492                 m_lastItem = id;
 493             }
 494
 495             AddItemsRecursively(id, numChildren, depth - 1, n + 1);
 496         }
 497     }
 498     //else: done!
 499 }
 500
 501 void MyTreeCtrl::AddTestItemsToTree(size_t numChildren,
 502                                     size_t depth)
 503 {
 504     wxTreeItemId rootId = AddRoot("Root",
 505                                   TreeCtrlIcon_Folder, TreeCtrlIcon_Folder,
 506                                   new MyTreeItemData("Root item"));
 507
 508     AddItemsRecursively(rootId, numChildren, depth, 0);
 509 }
 510
 511 void MyTreeCtrl::GetItemsRecursively(const wxTreeItemId& idParent, long cookie)
 512 {
 513     wxTreeItemId id;
 514
 515     if( cookie == -1 )
 516         id = GetFirstChild(idParent, cookie);
 517     else
 518         id = GetNextChild(idParent, cookie);
 519
 520     if(id <= 0)
 521         return;
 522
 523     wxString text = GetItemText(id);
 524     wxLogMessage(text);
 525
 526     if (ItemHasChildren(id))
 527         GetItemsRecursively(id,-1);
 528
 529     GetItemsRecursively(idParent, cookie);
 530 }
 531
 532 void MyTreeCtrl::DoToggleIcon(const wxTreeItemId& item)
 533 {
 534     int image = GetItemImage(item) == TreeCtrlIcon_Folder ? TreeCtrlIcon_File
 535                                                           : TreeCtrlIcon_Folder;
 536
 537     SetItemImage(item, image);
 538 }
 539
 540
 541 // avoid repetition
 542 #define TREE_EVENT_HANDLER(name)                            \
 543 void MyTreeCtrl::name(wxTreeEvent& WXUNUSED(event))         \
 544 {                                                           \
 545     wxLogMessage(#name);                                    \
 546 }
 547
 548 TREE_EVENT_HANDLER(OnBeginDrag)
 549 TREE_EVENT_HANDLER(OnBeginRDrag)
 550 TREE_EVENT_HANDLER(OnDeleteItem)
 551 TREE_EVENT_HANDLER(OnGetInfo)
 552 TREE_EVENT_HANDLER(OnSetInfo)
 553 TREE_EVENT_HANDLER(OnItemExpanded)
 554 TREE_EVENT_HANDLER(OnItemExpanding)
 555 TREE_EVENT_HANDLER(OnItemCollapsed)
 556 TREE_EVENT_HANDLER(OnSelChanged)
 557 TREE_EVENT_HANDLER(OnSelChanging)
 558
 559 #undef TREE_EVENT_HANDLER
 560
 561 void MyTreeCtrl::OnBeginLabelEdit(wxTreeEvent& event)
 562 {
 563     wxLogMessage("OnBeginLabelEdit");
 564
 565     // for testing, prevent this items label editing
 566     wxTreeItemId itemId = event.GetItem();
 567     if ( IsTestItem(itemId) )
 568     {
 569         wxMessageBox("You can't edit this item.");
 570
 571         event.Veto();
 572     }
 573 }
 574
 575 void MyTreeCtrl::OnEndLabelEdit(wxTreeEvent& event)
 576 {
 577     wxLogMessage("OnEndLabelEdit");
 578
 579     // don't allow anything except letters in the labels
 580     if ( !event.GetLabel().IsWord() )
 581     {
 582         wxMessageBox("The label should contain only letters.");
 583
 584         event.Veto();
 585     }
 586 }
 587
 588 void MyTreeCtrl::OnItemCollapsing(wxTreeEvent& event)
 589 {
 590     wxLogMessage("OnItemCollapsing");
 591
 592     // for testing, prevent the user from collapsing the first child folder
 593     wxTreeItemId itemId = event.GetItem();
 594     if ( IsTestItem(itemId) )
 595     {
 596         wxMessageBox("You can't collapse this item.");
 597
 598         event.Veto();
 599     }
 600 }
 601
 602 void MyTreeCtrl::OnTreeKeyDown(wxTreeEvent&WXUNUSED(event))
 603 {
 604     wxLogMessage("OnTreeKeyDown");
 605 }
 606
 607 void MyTreeCtrl::OnItemActivated(wxTreeEvent&WXUNUSED(event))
 608 {
 609     // show some info about this item
 610     wxTreeItemId itemId = GetSelection();
 611     MyTreeItemData *item = (MyTreeItemData *)GetItemData(itemId);
 612
 613     if ( item != NULL )
 614     {
 615         item->ShowInfo(this);
 616     }
 617
 618     wxLogMessage("OnItemActivated");
 619 }
 620
 621 void MyTreeCtrl::OnRMouseDClick(wxMouseEvent& event)
 622 {
 623     wxTreeItemId id = HitTest(event.GetPosition());
 624     if ( !id )
 625         wxLogMessage("No item under mouse");
 626     else
 627     {
 628         MyTreeItemData *item = (MyTreeItemData *)GetItemData(id);
 629         if ( item )
 630             wxLogMessage("Item '%s' under mouse", item->GetDesc());
 631     }
 632 }
 633
 634 static inline const char *Bool2String(bool b)
 635 {
 636     return b ? "" : "not ";
 637 }
 638
 639 void MyTreeItemData::ShowInfo(wxTreeCtrl *tree)
 640 {
 641     wxLogMessage("Item '%s': %sselected, %sexpanded, %sbold,\n"
 642                  "%u children (%u immediately under this item).",
 643                  m_desc.c_str(),
 644                  Bool2String(tree->IsSelected(GetId())),
 645                  Bool2String(tree->IsExpanded(GetId())),
 646                  Bool2String(tree->IsBold(GetId())),
 647                  tree->GetChildrenCount(GetId()),
 648                  tree->GetChildrenCount(GetId(), FALSE));
 649 }