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     // this is not supported at all under MSW
  38     #define NO_VARIABLE_HEIGHT
  39
  40     #define NO_MULTIPLE_SELECTION
  41
  42     // this is supported (so the next line may be uncommented) but not very
  43     // well :-(
  44     #undef NO_MULTIPLE_SELECTION
  45 #endif
  46
  47 #include "treetest.h"
  48
  49 // under Windows the icons are in the .rc file
  50 #ifndef __WXMSW__
  51   #include "icon1.xpm"
  52   #include "icon2.xpm"
  53   #include "icon3.xpm"
  54   #include "icon4.xpm"
  55   #include "icon5.xpm"
  56   #include "mondrian.xpm"
  57 #endif
  58
  59 // verify that the item is ok and insult the user if it is not
  60 #define CHECK_ITEM( item ) if ( !item.IsOk() ) {                            \
  61                              wxMessageBox("Please select some item first!", \
  62                                           "Tree sample error",              \
  63                                           wxOK | wxICON_EXCLAMATION,        \
  64                                           this);                            \
  65                              return;                                        \
  66                            }
  67
  68 BEGIN_EVENT_TABLE(MyFrame, wxFrame)
  69     EVT_SIZE(MyFrame::OnSize)
  70
  71     EVT_MENU(TreeTest_Quit, MyFrame::OnQuit)
  72     EVT_MENU(TreeTest_About, MyFrame::OnAbout)
  73     EVT_MENU(TreeTest_Dump, MyFrame::OnDump)
  74 #ifndef NO_MULTIPLE_SELECTION
  75     EVT_MENU(TreeTest_DumpSelected, MyFrame::OnDumpSelected)
  76     EVT_MENU(TreeTest_Select, MyFrame::OnSelect)
  77     EVT_MENU(TreeTest_Unselect, MyFrame::OnUnselect)
  78     EVT_MENU(TreeTest_ToggleSel, MyFrame::OnToggleSel)
  79 #endif // NO_MULTIPLE_SELECTION
  80     EVT_MENU(TreeTest_Rename, MyFrame::OnRename)
  81     EVT_MENU(TreeTest_Count, MyFrame::OnCount)
  82     EVT_MENU(TreeTest_CountRec, MyFrame::OnCountRec)
  83     EVT_MENU(TreeTest_Sort, MyFrame::OnSort)
  84     EVT_MENU(TreeTest_SortRev, MyFrame::OnSortRev)
  85     EVT_MENU(TreeTest_Bold, MyFrame::OnSetBold)
  86     EVT_MENU(TreeTest_UnBold, MyFrame::OnClearBold)
  87     EVT_MENU(TreeTest_Delete, MyFrame::OnDelete)
  88     EVT_MENU(TreeTest_DeleteChildren, MyFrame::OnDeleteChildren)
  89     EVT_MENU(TreeTest_DeleteAll, MyFrame::OnDeleteAll)
  90     EVT_MENU(TreeTest_Recreate, MyFrame::OnRecreate)
  91     EVT_MENU(TreeTest_CollapseAndReset, MyFrame::OnCollapseAndReset)
  92     EVT_MENU(TreeTest_EnsureVisible, MyFrame::OnEnsureVisible)
  93     EVT_MENU(TreeTest_AddItem, MyFrame::OnAddItem)
  94     EVT_MENU(TreeTest_InsertItem, MyFrame::OnInsertItem)
  95     EVT_MENU(TreeTest_IncIndent, MyFrame::OnIncIndent)
  96     EVT_MENU(TreeTest_DecIndent, MyFrame::OnDecIndent)
  97     EVT_MENU(TreeTest_IncSpacing, MyFrame::OnIncSpacing)
  98     EVT_MENU(TreeTest_DecSpacing, MyFrame::OnDecSpacing)
  99     EVT_MENU(TreeTest_ToggleIcon, MyFrame::OnToggleIcon)
 100 END_EVENT_TABLE()
 101
 102 BEGIN_EVENT_TABLE(MyTreeCtrl, wxTreeCtrl)
 103     EVT_TREE_BEGIN_DRAG(TreeTest_Ctrl, MyTreeCtrl::OnBeginDrag)
 104     EVT_TREE_BEGIN_RDRAG(TreeTest_Ctrl, MyTreeCtrl::OnBeginRDrag)
 105     EVT_TREE_END_DRAG(TreeTest_Ctrl, MyTreeCtrl::OnEndDrag)
 106     EVT_TREE_BEGIN_LABEL_EDIT(TreeTest_Ctrl, MyTreeCtrl::OnBeginLabelEdit)
 107     EVT_TREE_END_LABEL_EDIT(TreeTest_Ctrl, MyTreeCtrl::OnEndLabelEdit)
 108     EVT_TREE_DELETE_ITEM(TreeTest_Ctrl, MyTreeCtrl::OnDeleteItem)
 109 #if 0       // there are so many of those that logging them causes flicker
 110     EVT_TREE_GET_INFO(TreeTest_Ctrl, MyTreeCtrl::OnGetInfo)
 111 #endif
 112     EVT_TREE_SET_INFO(TreeTest_Ctrl, MyTreeCtrl::OnSetInfo)
 113     EVT_TREE_ITEM_EXPANDED(TreeTest_Ctrl, MyTreeCtrl::OnItemExpanded)
 114     EVT_TREE_ITEM_EXPANDING(TreeTest_Ctrl, MyTreeCtrl::OnItemExpanding)
 115     EVT_TREE_ITEM_COLLAPSED(TreeTest_Ctrl, MyTreeCtrl::OnItemCollapsed)
 116     EVT_TREE_ITEM_COLLAPSING(TreeTest_Ctrl, MyTreeCtrl::OnItemCollapsing)
 117     EVT_TREE_SEL_CHANGED(TreeTest_Ctrl, MyTreeCtrl::OnSelChanged)
 118     EVT_TREE_SEL_CHANGING(TreeTest_Ctrl, MyTreeCtrl::OnSelChanging)
 119     EVT_TREE_KEY_DOWN(TreeTest_Ctrl, MyTreeCtrl::OnTreeKeyDown)
 120     EVT_TREE_ITEM_ACTIVATED(TreeTest_Ctrl, MyTreeCtrl::OnItemActivated)
 121     EVT_RIGHT_DCLICK(MyTreeCtrl::OnRMouseDClick)
 122 END_EVENT_TABLE()
 123
 124 IMPLEMENT_APP(MyApp)
 125
 126 bool MyApp::OnInit()
 127 {
 128     // Create the main frame window
 129     MyFrame *frame = new MyFrame("wxTreeCtrl Test", 50, 50, 450, 340);
 130
 131     // Show the frame
 132     frame->Show(TRUE);
 133     SetTopWindow(frame);
 134
 135     return TRUE;
 136 }
 137
 138
 139 // My frame constructor
 140 MyFrame::MyFrame(const wxString& title, int x, int y, int w, int h)
 141        : wxFrame((wxFrame *)NULL, -1, title, wxPoint(x, y), wxSize(w, h)),
 142          m_treeCtrl(NULL), m_textCtrl(NULL)
 143 {
 144     // This reduces flicker effects - even better would be to define
 145     // OnEraseBackground to do nothing. When the tree control's scrollbars are
 146     // show or hidden, the frame is sent a background erase event.
 147     SetBackgroundColour(wxColour(255, 255, 255));
 148
 149     // Give it an icon
 150     SetIcon(wxICON(mondrian));
 151
 152     // Make a menubar
 153     wxMenu *file_menu = new wxMenu,
 154            *tree_menu = new wxMenu,
 155            *item_menu = new wxMenu;
 156
 157     file_menu->Append(TreeTest_About, "&About...");
 158     file_menu->AppendSeparator();
 159     file_menu->Append(TreeTest_Quit, "E&xit\tAlt-X");
 160
 161 #ifndef NO_MULTIPLE_SELECTION
 162     tree_menu->Append(TreeTest_ToggleSel, "&Toggle selection mode");
 163 #endif // NO_MULTIPLE_SELECTION
 164     tree_menu->Append(TreeTest_Recreate, "&Recreate the tree");
 165     tree_menu->Append(TreeTest_CollapseAndReset, "C&ollapse and reset");
 166     tree_menu->AppendSeparator();
 167     tree_menu->Append(TreeTest_AddItem, "Append a &new item");
 168     tree_menu->Append(TreeTest_InsertItem, "&Insert a new item");
 169     tree_menu->Append(TreeTest_Delete, "&Delete this item");
 170     tree_menu->Append(TreeTest_DeleteChildren, "Delete &children");
 171     tree_menu->Append(TreeTest_DeleteAll, "Delete &all items");
 172     tree_menu->AppendSeparator();
 173     tree_menu->Append(TreeTest_Count, "Count children of current item");
 174     tree_menu->Append(TreeTest_CountRec, "Recursively count children of current item");
 175     tree_menu->AppendSeparator();
 176     tree_menu->Append(TreeTest_Sort, "Sort children of current item");
 177     tree_menu->Append(TreeTest_SortRev, "Sort in reversed order");
 178     tree_menu->AppendSeparator();
 179     tree_menu->Append(TreeTest_EnsureVisible, "Make the last item &visible");
 180     tree_menu->AppendSeparator();
 181     tree_menu->Append(TreeTest_IncIndent, "Add 5 points to indentation\tAlt-I");
 182     tree_menu->Append(TreeTest_DecIndent, "Reduce indentation by 5 points\tAlt-R");
 183     tree_menu->AppendSeparator();
 184     tree_menu->Append(TreeTest_IncSpacing, "Add 5 points to spacing\tCtrl-I");
 185     tree_menu->Append(TreeTest_DecSpacing, "Reduce spacing by 5 points\tCtrl-R");
 186
 187     item_menu->Append(TreeTest_Dump, "&Dump item children");
 188     item_menu->Append(TreeTest_Rename, "&Rename item...");
 189
 190     item_menu->AppendSeparator();
 191     item_menu->Append(TreeTest_Bold, "Make item &bold");
 192     item_menu->Append(TreeTest_UnBold, "Make item &not bold");
 193     item_menu->AppendSeparator();
 194     item_menu->Append(TreeTest_ToggleIcon, "Toggle the items &icon");
 195
 196 #ifndef NO_MULTIPLE_SELECTION
 197     item_menu->AppendSeparator();
 198     item_menu->Append(TreeTest_DumpSelected, "Dump selected items\tAlt-D");
 199     item_menu->Append(TreeTest_Select, "Select current item\tAlt-S");
 200     item_menu->Append(TreeTest_Unselect, "Unselect everything\tAlt-U");
 201 #endif // NO_MULTIPLE_SELECTION
 202
 203     wxMenuBar *menu_bar = new wxMenuBar;
 204     menu_bar->Append(file_menu, "&File");
 205     menu_bar->Append(tree_menu, "&Tree");
 206     menu_bar->Append(item_menu, "&Item");
 207     SetMenuBar(menu_bar);
 208
 209     m_treeCtrl = new MyTreeCtrl(this, TreeTest_Ctrl,
 210                                 wxDefaultPosition, wxDefaultSize,
 211                                 wxTR_HAS_BUTTONS |
 212                                 wxTR_EDIT_LABELS |
 213 #ifndef NO_VARIABLE_HEIGHT
 214                                 wxTR_HAS_VARIABLE_ROW_HEIGHT |
 215 #endif
 216                                 wxSUNKEN_BORDER);
 217
 218     m_treeCtrl->SetBackgroundColour(wxColour(204, 205, 79));
 219
 220     m_textCtrl = new wxTextCtrl(this, -1, "",
 221                                 wxDefaultPosition, wxDefaultSize,
 222                                 wxTE_MULTILINE | wxSUNKEN_BORDER);
 223
 224     // create a status bar with 3 panes
 225     CreateStatusBar(3);
 226     SetStatusText("", 0);
 227
 228 #ifdef __WXMOTIF__
 229     // For some reason, we get a memcpy crash in wxLogStream::DoLogStream
 230     // on gcc/wxMotif, if we use wxLogTextCtl. Maybe it's just gcc?
 231     delete wxLog::SetActiveTarget(new wxLogStderr);
 232 #else
 233     // set our text control as the log target
 234     wxLogTextCtrl *logWindow = new wxLogTextCtrl(m_textCtrl);
 235     delete wxLog::SetActiveTarget(logWindow);
 236 #endif
 237 }
 238
 239 MyFrame::~MyFrame()
 240 {
 241     delete wxLog::SetActiveTarget(NULL);
 242 }
 243
 244 void MyFrame::OnSize(wxSizeEvent& event)
 245 {
 246     if ( m_treeCtrl && m_textCtrl )
 247     {
 248         Resize(GetClientSize());
 249     }
 250
 251     event.Skip();
 252 }
 253
 254 void MyFrame::Resize(const wxSize& size)
 255 {
 256     m_treeCtrl->SetSize(0, 0, size.x, 2*size.y/3);
 257     m_textCtrl->SetSize(0, 2*size.y/3, size.x, size.y/3);
 258 }
 259
 260 void MyFrame::OnQuit(wxCommandEvent& WXUNUSED(event))
 261 {
 262     Close(TRUE);
 263 }
 264
 265 void MyFrame::OnAbout(wxCommandEvent& WXUNUSED(event))
 266 {
 267     wxMessageBox("Tree test sample\n"
 268                  "(c) Julian Smart 1997, Vadim Zeitlin 1998",
 269                  "About tree test",
 270                  wxOK | wxICON_INFORMATION, this);
 271 }
 272
 273 void MyFrame::OnRename(wxCommandEvent& WXUNUSED(event))
 274 {
 275     wxTreeItemId item = m_treeCtrl->GetSelection();
 276
 277     CHECK_ITEM( item );
 278
 279     // old code - now we edit in place
 280 #if 0
 281     static wxString s_text;
 282     s_text = wxGetTextFromUser("New name: ", "Tree sample question",
 283             s_text, this);
 284     if ( !s_text.IsEmpty() )
 285     {
 286         m_treeCtrl->SetItemText(item, s_text);
 287     }
 288 #endif // 0
 289
 290     // TODO demonstrate creating a custom edit control...
 291     (void)m_treeCtrl->EditLabel(item);
 292 }
 293
 294 void MyFrame::OnCount(wxCommandEvent& WXUNUSED(event))
 295 {
 296     wxTreeItemId item = m_treeCtrl->GetSelection();
 297
 298     CHECK_ITEM( item );
 299
 300     int i = m_treeCtrl->GetChildrenCount( item, FALSE );
 301
 302     wxLogMessage(wxT("%d children"), i);
 303 }
 304
 305 void MyFrame::OnCountRec(wxCommandEvent& WXUNUSED(event))
 306 {
 307     wxTreeItemId item = m_treeCtrl->GetSelection();
 308
 309     CHECK_ITEM( item );
 310
 311     int i = m_treeCtrl->GetChildrenCount( item );
 312
 313     wxLogMessage(wxT("%d children"), i);
 314 }
 315
 316 void MyFrame::DoSort(bool reverse)
 317 {
 318     wxTreeItemId item = m_treeCtrl->GetSelection();
 319
 320     CHECK_ITEM( item );
 321
 322     m_treeCtrl->DoSortChildren(item, reverse);
 323 }
 324
 325 void MyFrame::OnDump(wxCommandEvent& WXUNUSED(event))
 326 {
 327     wxTreeItemId root = m_treeCtrl->GetSelection();
 328
 329     CHECK_ITEM( root );
 330
 331     m_treeCtrl->GetItemsRecursively(root, -1);
 332 }
 333
 334 #ifndef NO_MULTIPLE_SELECTION
 335
 336 void MyFrame::OnToggleSel(wxCommandEvent& WXUNUSED(event))
 337 {
 338     long style = m_treeCtrl->GetWindowStyle();
 339     if ( style & wxTR_MULTIPLE )
 340         style &= ~wxTR_MULTIPLE;
 341     else
 342         style |= wxTR_MULTIPLE;
 343
 344     delete m_treeCtrl;
 345
 346     m_treeCtrl = new MyTreeCtrl(this, TreeTest_Ctrl,
 347                                 wxDefaultPosition, wxDefaultSize,
 348                                 style);
 349     Resize(GetClientSize());
 350 }
 351
 352 void MyFrame::OnDumpSelected(wxCommandEvent& WXUNUSED(event))
 353 {
 354     wxArrayTreeItemIds array;
 355
 356     size_t count = m_treeCtrl->GetSelections(array);
 357     wxLogMessage(wxT("%u items selected"), count);
 358
 359     for ( size_t n = 0; n < count; n++ )
 360     {
 361         wxLogMessage("\t%s", m_treeCtrl->GetItemText(array.Item(n)).c_str());
 362     }
 363 }
 364
 365 void MyFrame::OnSelect(wxCommandEvent& event)
 366 {
 367     m_treeCtrl->SelectItem(m_treeCtrl->GetSelection());
 368 }
 369
 370 void MyFrame::OnUnselect(wxCommandEvent& event)
 371 {
 372     m_treeCtrl->UnselectAll();
 373 }
 374
 375 #endif // NO_MULTIPLE_SELECTION
 376
 377 void MyFrame::DoSetBold(bool bold)
 378 {
 379     wxTreeItemId item = m_treeCtrl->GetSelection();
 380
 381     CHECK_ITEM( item );
 382
 383     m_treeCtrl->SetItemBold(item, bold);
 384 }
 385
 386 void MyFrame::OnDelete(wxCommandEvent& WXUNUSED(event))
 387 {
 388     wxTreeItemId item = m_treeCtrl->GetSelection();
 389
 390     CHECK_ITEM( item );
 391
 392     m_treeCtrl->Delete(item);
 393 }
 394
 395 void MyFrame::OnDeleteChildren(wxCommandEvent& WXUNUSED(event))
 396 {
 397     wxTreeItemId item = m_treeCtrl->GetSelection();
 398
 399     CHECK_ITEM( item );
 400
 401     m_treeCtrl->DeleteChildren(item);
 402 }
 403
 404 void MyFrame::OnDeleteAll(wxCommandEvent& WXUNUSED(event))
 405 {
 406     m_treeCtrl->DeleteAllItems();
 407 }
 408
 409 void MyFrame::OnRecreate(wxCommandEvent& event)
 410 {
 411     OnDeleteAll(event);
 412     m_treeCtrl->AddTestItemsToTree(3, 2);
 413 }
 414
 415 void MyFrame::OnCollapseAndReset(wxCommandEvent& event)
 416 {
 417     m_treeCtrl->CollapseAndReset(m_treeCtrl->GetRootItem());
 418 }
 419
 420 void MyFrame::OnEnsureVisible(wxCommandEvent& event)
 421 {
 422     m_treeCtrl->DoEnsureVisible();
 423 }
 424
 425 void MyFrame::OnInsertItem(wxCommandEvent& WXUNUSED(event))
 426 {
 427     m_treeCtrl->InsertItem(m_treeCtrl->GetRootItem(), 1, "2nd item");
 428 }
 429
 430 void MyFrame::OnAddItem(wxCommandEvent& WXUNUSED(event))
 431 {
 432     static int s_num = 0;
 433
 434     wxString text;
 435     text.Printf("Item #%d", ++s_num);
 436
 437     m_treeCtrl->AppendItem(m_treeCtrl->GetRootItem(),
 438                            text /*,
 439                            MyTreeCtrl::TreeCtrlIcon_File */ );
 440 }
 441
 442 void MyFrame::OnIncIndent(wxCommandEvent& WXUNUSED(event))
 443 {
 444     unsigned int indent = m_treeCtrl->GetIndent();
 445     if (indent < 100)
 446         m_treeCtrl->SetIndent( indent+5 );
 447 }
 448
 449 void MyFrame::OnDecIndent(wxCommandEvent& WXUNUSED(event))
 450 {
 451     unsigned int indent = m_treeCtrl->GetIndent();
 452     if (indent > 10)
 453         m_treeCtrl->SetIndent( indent-5 );
 454 }
 455
 456 void MyFrame::OnIncSpacing(wxCommandEvent& WXUNUSED(event))
 457 {
 458     unsigned int indent = m_treeCtrl->GetSpacing();
 459     if (indent < 100)
 460         m_treeCtrl->SetSpacing( indent+5 );
 461 }
 462
 463 void MyFrame::OnDecSpacing(wxCommandEvent& WXUNUSED(event))
 464 {
 465     unsigned int indent = m_treeCtrl->GetSpacing();
 466     if (indent > 10)
 467         m_treeCtrl->SetSpacing( indent-5 );
 468 }
 469
 470 void MyFrame::OnToggleIcon(wxCommandEvent& WXUNUSED(event))
 471 {
 472     wxTreeItemId item = m_treeCtrl->GetSelection();
 473
 474     CHECK_ITEM( item );
 475
 476     m_treeCtrl->DoToggleIcon(item);
 477 }
 478
 479 // MyTreeCtrl implementation
 480 IMPLEMENT_DYNAMIC_CLASS(MyTreeCtrl, wxTreeCtrl)
 481
 482 MyTreeCtrl::MyTreeCtrl(wxWindow *parent, const wxWindowID id,
 483                        const wxPoint& pos, const wxSize& size,
 484                        long style)
 485           : wxTreeCtrl(parent, id, pos, size, style)
 486 {
 487 #ifndef NO_VARIABLE_HEIGHT
 488 #if wxUSE_LIBJPEG
 489     wxImage::AddHandler(new wxJPEGHandler);
 490     wxImage image;
 491
 492     image.LoadFile(wxString("horse.jpg"), wxBITMAP_TYPE_JPEG );
 493 #endif
 494 #endif
 495
 496     m_reverseSort = FALSE;
 497
 498     // Make an image list containing small icons
 499     m_imageListNormal = new wxImageList(16, 16, TRUE);
 500
 501     // should correspond to TreeCtrlIcon_xxx enum
 502 #if defined(__WXMSW__) && defined(__WIN16__)
 503     // This is required in 16-bit Windows mode only because we can't load a specific (16x16)
 504     // icon image, so it comes out stretched
 505 #  ifndef NO_VARIABLE_HEIGHT
 506     m_imageListNormal->Add(image.ConvertToBitmap());
 507 #  else
 508     m_imageListNormal->Add(wxBitmap("bitmap1", wxBITMAP_TYPE_BMP_RESOURCE));
 509 #  endif
 510     m_imageListNormal->Add(wxBitmap("bitmap2", wxBITMAP_TYPE_BMP_RESOURCE));
 511     m_imageListNormal->Add(wxBitmap("bitmap3", wxBITMAP_TYPE_BMP_RESOURCE));
 512     m_imageListNormal->Add(wxBitmap("bitmap4", wxBITMAP_TYPE_BMP_RESOURCE));
 513     m_imageListNormal->Add(wxBitmap("bitmap5", wxBITMAP_TYPE_BMP_RESOURCE));
 514 #else
 515 #  ifndef NO_VARIABLE_HEIGHT
 516     m_imageListNormal->Add(image.ConvertToBitmap());
 517 #  else
 518     m_imageListNormal->Add(wxICON(icon1));
 519 #  endif
 520     m_imageListNormal->Add(wxICON(icon2));
 521     m_imageListNormal->Add(wxICON(icon3));
 522     m_imageListNormal->Add(wxICON(icon4));
 523     m_imageListNormal->Add(wxICON(icon5));
 524 #endif
 525
 526     SetImageList(m_imageListNormal);
 527
 528     // Add some items to the tree
 529     AddTestItemsToTree(3, 2);
 530 }
 531
 532 MyTreeCtrl::~MyTreeCtrl()
 533 {
 534     delete m_imageListNormal;
 535 }
 536
 537 int MyTreeCtrl::OnCompareItems(const wxTreeItemId& item1,
 538                                const wxTreeItemId& item2)
 539 {
 540     if ( m_reverseSort )
 541     {
 542         // just exchange 1st and 2nd items
 543         return wxTreeCtrl::OnCompareItems(item2, item1);
 544     }
 545     else
 546     {
 547         return wxTreeCtrl::OnCompareItems(item1, item2);
 548     }
 549 }
 550
 551 void MyTreeCtrl::AddItemsRecursively(const wxTreeItemId& idParent,
 552                                      size_t numChildren,
 553                                      size_t depth,
 554                                      size_t folder)
 555 {
 556     if ( depth > 0 )
 557     {
 558         bool hasChildren = depth > 1;
 559
 560         wxString str;
 561         for ( size_t n = 0; n < numChildren; n++ )
 562         {
 563             // at depth 1 elements won't have any more children
 564             if ( hasChildren )
 565                 str.Printf("%s child %d", "Folder", n + 1);
 566             else
 567                 str.Printf("%s child %d.%d", "File", folder, n + 1);
 568
 569             // here we pass to AppendItem() normal and selected item images (we
 570             // suppose that selected image follows the normal one in the enum)
 571             int image = depth == 1 ? TreeCtrlIcon_File : TreeCtrlIcon_Folder;
 572             wxTreeItemId id = AppendItem(idParent, str, image, image + 1,
 573                                          new MyTreeItemData(str));
 574
 575             // and now we also set the expanded one (only for the folders)
 576             if ( hasChildren )
 577             {
 578                 SetItemImage(id, TreeCtrlIcon_FolderOpened,
 579                              wxTreeItemIcon_Expanded);
 580             }
 581
 582             // remember the last child for OnEnsureVisible()
 583             if ( !hasChildren && n == numChildren - 1 )
 584             {
 585                 m_lastItem = id;
 586             }
 587
 588             AddItemsRecursively(id, numChildren, depth - 1, n + 1);
 589         }
 590     }
 591     //else: done!
 592 }
 593
 594 void MyTreeCtrl::AddTestItemsToTree(size_t numChildren,
 595                                     size_t depth)
 596 {
 597     wxTreeItemId rootId = AddRoot("Root",
 598                                   TreeCtrlIcon_Folder, TreeCtrlIcon_Folder,
 599                                   new MyTreeItemData("Root item"));
 600     SetItemImage(rootId, TreeCtrlIcon_FolderOpened, wxTreeItemIcon_Expanded);
 601
 602     AddItemsRecursively(rootId, numChildren, depth, 0);
 603
 604     // set some colours/fonts for testing
 605     SetItemFont(rootId, *wxITALIC_FONT);
 606
 607     long cookie;
 608     wxTreeItemId id = GetFirstChild(rootId, cookie);
 609     SetItemTextColour(id, *wxBLUE);
 610
 611     id = GetNextChild(rootId, cookie);
 612     id = GetNextChild(rootId, cookie);
 613     SetItemTextColour(id, *wxRED);
 614     SetItemBackgroundColour(id, *wxLIGHT_GREY);
 615 }
 616
 617 void MyTreeCtrl::GetItemsRecursively(const wxTreeItemId& idParent, long cookie)
 618 {
 619     wxTreeItemId id;
 620
 621     if( cookie == -1 )
 622         id = GetFirstChild(idParent, cookie);
 623     else
 624         id = GetNextChild(idParent, cookie);
 625
 626     if(id <= 0)
 627         return;
 628
 629     wxString text = GetItemText(id);
 630     wxLogMessage(text);
 631
 632     if (ItemHasChildren(id))
 633         GetItemsRecursively(id,-1);
 634
 635     GetItemsRecursively(idParent, cookie);
 636 }
 637
 638 void MyTreeCtrl::DoToggleIcon(const wxTreeItemId& item)
 639 {
 640     int image = GetItemImage(item) == TreeCtrlIcon_Folder ? TreeCtrlIcon_File
 641                                                           : TreeCtrlIcon_Folder;
 642
 643     SetItemImage(item, image);
 644 }
 645
 646
 647 // avoid repetition
 648 #define TREE_EVENT_HANDLER(name)                            \
 649 void MyTreeCtrl::name(wxTreeEvent& event)                   \
 650 {                                                           \
 651     wxLogMessage(#name);                                    \
 652     event.Skip();                                           \
 653 }
 654
 655 TREE_EVENT_HANDLER(OnBeginRDrag)
 656 TREE_EVENT_HANDLER(OnDeleteItem)
 657 TREE_EVENT_HANDLER(OnGetInfo)
 658 TREE_EVENT_HANDLER(OnSetInfo)
 659 TREE_EVENT_HANDLER(OnItemExpanded)
 660 TREE_EVENT_HANDLER(OnItemExpanding)
 661 TREE_EVENT_HANDLER(OnItemCollapsed)
 662 TREE_EVENT_HANDLER(OnSelChanged)
 663 TREE_EVENT_HANDLER(OnSelChanging)
 664 TREE_EVENT_HANDLER(OnTreeKeyDown)
 665
 666 #undef TREE_EVENT_HANDLER
 667
 668 void MyTreeCtrl::OnBeginDrag(wxTreeEvent& event)
 669 {
 670     // need to explicitly allow drag
 671     if ( event.GetItem() != GetRootItem() )
 672     {
 673         m_draggedItem = event.GetItem();
 674
 675         wxLogMessage("OnBeginDrag: started dragging %s",
 676                      GetItemText(m_draggedItem).c_str());
 677
 678         event.Allow();
 679     }
 680     else
 681     {
 682         wxLogMessage("OnBeginDrag: this item can't be dragged.");
 683     }
 684 }
 685
 686 void MyTreeCtrl::OnEndDrag(wxTreeEvent& event)
 687 {
 688     wxTreeItemId itemSrc = m_draggedItem,
 689                  itemDst = event.GetItem();
 690     m_draggedItem = (wxTreeItemId)0l;
 691
 692     // where to copy the item?
 693     if ( itemDst.IsOk() && !ItemHasChildren(itemDst) )
 694     {
 695         // copy to the parent then
 696         itemDst = GetParent(itemDst);
 697     }
 698
 699     if ( !itemDst.IsOk() )
 700     {
 701         wxLogMessage("OnEndDrag: can't drop here.");
 702
 703         return;
 704     }
 705
 706     wxString text = GetItemText(itemSrc);
 707     wxLogMessage("OnEndDrag: '%s' copied to '%s'.",
 708                  text.c_str(), GetItemText(itemDst).c_str());
 709
 710     // just do append here - we could also insert it just before/after the item
 711     // on which it was dropped, but this requires slightly more work... we also
 712     // completely ignore the client data and icon of the old item but could
 713     // copy them as well.
 714     //
 715     // Finally, we only copy one item here but we might copy the entire tree if
 716     // we were dragging a folder.
 717     AppendItem(itemDst, text, TreeCtrlIcon_File);
 718 }
 719
 720 void MyTreeCtrl::OnBeginLabelEdit(wxTreeEvent& event)
 721 {
 722     wxLogMessage("OnBeginLabelEdit");
 723
 724     // for testing, prevent this items label editing
 725     wxTreeItemId itemId = event.GetItem();
 726     if ( IsTestItem(itemId) )
 727     {
 728         wxMessageBox("You can't edit this item.");
 729
 730         event.Veto();
 731     }
 732 }
 733
 734 void MyTreeCtrl::OnEndLabelEdit(wxTreeEvent& event)
 735 {
 736     wxLogMessage("OnEndLabelEdit");
 737
 738     // don't allow anything except letters in the labels
 739     if ( !event.GetLabel().IsWord() )
 740     {
 741         wxMessageBox("The label should contain only letters.");
 742
 743         event.Veto();
 744     }
 745 }
 746
 747 void MyTreeCtrl::OnItemCollapsing(wxTreeEvent& event)
 748 {
 749     wxLogMessage("OnItemCollapsing");
 750
 751     // for testing, prevent the user from collapsing the first child folder
 752     wxTreeItemId itemId = event.GetItem();
 753     if ( IsTestItem(itemId) )
 754     {
 755         wxMessageBox("You can't collapse this item.");
 756
 757         event.Veto();
 758     }
 759 }
 760
 761 void MyTreeCtrl::OnItemActivated(wxTreeEvent&WXUNUSED(event))
 762 {
 763     // show some info about this item
 764     wxTreeItemId itemId = GetSelection();
 765     MyTreeItemData *item = (MyTreeItemData *)GetItemData(itemId);
 766
 767     if ( item != NULL )
 768     {
 769         item->ShowInfo(this);
 770     }
 771
 772     wxLogMessage("OnItemActivated");
 773 }
 774
 775 void MyTreeCtrl::OnRMouseDClick(wxMouseEvent& event)
 776 {
 777     wxTreeItemId id = HitTest(event.GetPosition());
 778     if ( !id )
 779         wxLogMessage("No item under mouse");
 780     else
 781     {
 782         MyTreeItemData *item = (MyTreeItemData *)GetItemData(id);
 783         if ( item )
 784             wxLogMessage("Item '%s' under mouse", item->GetDesc());
 785     }
 786 }
 787
 788 static inline const char *Bool2String(bool b)
 789 {
 790     return b ? "" : "not ";
 791 }
 792
 793 void MyTreeItemData::ShowInfo(wxTreeCtrl *tree)
 794 {
 795     wxLogMessage("Item '%s': %sselected, %sexpanded, %sbold,\n"
 796                  "%u children (%u immediately under this item).",
 797                  m_desc.c_str(),
 798                  Bool2String(tree->IsSelected(GetId())),
 799                  Bool2String(tree->IsExpanded(GetId())),
 800                  Bool2String(tree->IsBold(GetId())),
 801                  tree->GetChildrenCount(GetId()),
 802                  tree->GetChildrenCount(GetId(), FALSE));
 803 }