samples/treectrl/treectrl.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        treectrl.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 // important: the #pragma argument must be different from treectrl.cpp,
  13 // otherwise gcc gets confused (as there is also treectrl.cpp in the library
  14 // which has identical #pragma) and the sample crashes on startup!
  15 #ifdef __GNUG__
  16   #pragma interface "treetest.cpp"
  17   #pragma implementation "treetest.cpp"
  18 #endif
  19
  20 // For compilers that support precompilation, includes "wx/wx.h".
  21 #include "wx/wxprec.h"
  22
  23 #ifdef __BORLANDC__
  24   #pragma hdrstop
  25 #endif
  26
  27 #ifndef WX_PRECOMP
  28   #include "wx/wx.h"
  29 #endif
  30
  31 #include "wx/log.h"
  32
  33 #include "wx/image.h"
  34 #include "wx/imaglist.h"
  35 #include "wx/treectrl.h"
  36
  37 #include "math.h"
  38
  39 #ifdef __WIN32__
  40     // this is not supported by native control
  41     #define NO_VARIABLE_HEIGHT
  42 #endif
  43
  44 #include "treectrl.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_SIZE(MyFrame::OnSize)
  67
  68     EVT_MENU(TreeTest_Quit, MyFrame::OnQuit)
  69     EVT_MENU(TreeTest_About, MyFrame::OnAbout)
  70     EVT_MENU(TreeTest_Dump, MyFrame::OnDump)
  71 #ifndef NO_MULTIPLE_SELECTION
  72     EVT_MENU(TreeTest_DumpSelected, MyFrame::OnDumpSelected)
  73     EVT_MENU(TreeTest_Select, MyFrame::OnSelect)
  74     EVT_MENU(TreeTest_Unselect, MyFrame::OnUnselect)
  75     EVT_MENU(TreeTest_ToggleSel, MyFrame::OnToggleSel)
  76 #endif // NO_MULTIPLE_SELECTION
  77     EVT_MENU(TreeTest_Rename, MyFrame::OnRename)
  78     EVT_MENU(TreeTest_Count, MyFrame::OnCount)
  79     EVT_MENU(TreeTest_CountRec, MyFrame::OnCountRec)
  80     EVT_MENU(TreeTest_Sort, MyFrame::OnSort)
  81     EVT_MENU(TreeTest_SortRev, MyFrame::OnSortRev)
  82     EVT_MENU(TreeTest_Bold, MyFrame::OnSetBold)
  83     EVT_MENU(TreeTest_UnBold, MyFrame::OnClearBold)
  84     EVT_MENU(TreeTest_Delete, MyFrame::OnDelete)
  85     EVT_MENU(TreeTest_DeleteChildren, MyFrame::OnDeleteChildren)
  86     EVT_MENU(TreeTest_DeleteAll, MyFrame::OnDeleteAll)
  87     EVT_MENU(TreeTest_Recreate, MyFrame::OnRecreate)
  88     EVT_MENU(TreeTest_ToggleImages, MyFrame::OnToggleImages)
  89     EVT_MENU(TreeTest_SetImageSize, MyFrame::OnSetImageSize)
  90     EVT_MENU(TreeTest_CollapseAndReset, MyFrame::OnCollapseAndReset)
  91     EVT_MENU(TreeTest_EnsureVisible, MyFrame::OnEnsureVisible)
  92     EVT_MENU(TreeTest_AddItem, MyFrame::OnAddItem)
  93     EVT_MENU(TreeTest_InsertItem, MyFrame::OnInsertItem)
  94     EVT_MENU(TreeTest_IncIndent, MyFrame::OnIncIndent)
  95     EVT_MENU(TreeTest_DecIndent, MyFrame::OnDecIndent)
  96     EVT_MENU(TreeTest_IncSpacing, MyFrame::OnIncSpacing)
  97     EVT_MENU(TreeTest_DecSpacing, MyFrame::OnDecSpacing)
  98     EVT_MENU(TreeTest_ToggleIcon, MyFrame::OnToggleIcon)
  99 END_EVENT_TABLE()
 100
 101 #if USE_GENERIC_TREECTRL
 102 BEGIN_EVENT_TABLE(MyTreeCtrl, wxGenericTreeCtrl)
 103 #else
 104 BEGIN_EVENT_TABLE(MyTreeCtrl, wxTreeCtrl)
 105 #endif
 106     EVT_TREE_BEGIN_DRAG(TreeTest_Ctrl, MyTreeCtrl::OnBeginDrag)
 107     EVT_TREE_BEGIN_RDRAG(TreeTest_Ctrl, MyTreeCtrl::OnBeginRDrag)
 108     EVT_TREE_END_DRAG(TreeTest_Ctrl, MyTreeCtrl::OnEndDrag)
 109     EVT_TREE_BEGIN_LABEL_EDIT(TreeTest_Ctrl, MyTreeCtrl::OnBeginLabelEdit)
 110     EVT_TREE_END_LABEL_EDIT(TreeTest_Ctrl, MyTreeCtrl::OnEndLabelEdit)
 111     EVT_TREE_DELETE_ITEM(TreeTest_Ctrl, MyTreeCtrl::OnDeleteItem)
 112 #if 0       // there are so many of those that logging them causes flicker
 113     EVT_TREE_GET_INFO(TreeTest_Ctrl, MyTreeCtrl::OnGetInfo)
 114 #endif
 115     EVT_TREE_SET_INFO(TreeTest_Ctrl, MyTreeCtrl::OnSetInfo)
 116     EVT_TREE_ITEM_EXPANDED(TreeTest_Ctrl, MyTreeCtrl::OnItemExpanded)
 117     EVT_TREE_ITEM_EXPANDING(TreeTest_Ctrl, MyTreeCtrl::OnItemExpanding)
 118     EVT_TREE_ITEM_COLLAPSED(TreeTest_Ctrl, MyTreeCtrl::OnItemCollapsed)
 119     EVT_TREE_ITEM_COLLAPSING(TreeTest_Ctrl, MyTreeCtrl::OnItemCollapsing)
 120     EVT_TREE_ITEM_RIGHT_CLICK(TreeTest_Ctrl, MyTreeCtrl::OnItemRightClick)
 121
 122     EVT_RIGHT_UP(MyTreeCtrl::OnRMouseUp)
 123     EVT_TREE_SEL_CHANGED(TreeTest_Ctrl, MyTreeCtrl::OnSelChanged)
 124     EVT_TREE_SEL_CHANGING(TreeTest_Ctrl, MyTreeCtrl::OnSelChanging)
 125     EVT_TREE_KEY_DOWN(TreeTest_Ctrl, MyTreeCtrl::OnTreeKeyDown)
 126     EVT_TREE_ITEM_ACTIVATED(TreeTest_Ctrl, MyTreeCtrl::OnItemActivated)
 127     EVT_RIGHT_DCLICK(MyTreeCtrl::OnRMouseDClick)
 128 END_EVENT_TABLE()
 129
 130 IMPLEMENT_APP(MyApp)
 131
 132 bool MyApp::OnInit()
 133 {
 134     // Create the main frame window
 135     MyFrame *frame = new MyFrame("wxTreeCtrl Test", 50, 50, 450, 600);
 136
 137     // Show the frame
 138     frame->Show(TRUE);
 139     SetTopWindow(frame);
 140
 141     return TRUE;
 142 }
 143
 144
 145 // My frame constructor
 146 MyFrame::MyFrame(const wxString& title, int x, int y, int w, int h)
 147        : wxFrame((wxFrame *)NULL, -1, title, wxPoint(x, y), wxSize(w, h)),
 148          m_treeCtrl(NULL), m_textCtrl(NULL)
 149 {
 150     // This reduces flicker effects - even better would be to define
 151     // OnEraseBackground to do nothing. When the tree control's scrollbars are
 152     // show or hidden, the frame is sent a background erase event.
 153     SetBackgroundColour(wxColour(255, 255, 255));
 154
 155     // Give it an icon
 156     SetIcon(wxICON(mondrian));
 157
 158     // Make a menubar
 159     wxMenu *file_menu = new wxMenu,
 160            *tree_menu = new wxMenu,
 161            *item_menu = new wxMenu;
 162
 163     file_menu->Append(TreeTest_About, "&About...");
 164     file_menu->AppendSeparator();
 165     file_menu->Append(TreeTest_Quit, "E&xit\tAlt-X");
 166
 167 #ifndef NO_MULTIPLE_SELECTION
 168     tree_menu->Append(TreeTest_ToggleSel, "&Toggle selection mode");
 169 #endif // NO_MULTIPLE_SELECTION
 170     tree_menu->Append(TreeTest_ToggleImages, "&Show images", "", TRUE);
 171     tree_menu->Append(TreeTest_SetImageSize, "Set image si&ze...");
 172     tree_menu->Append(TreeTest_Recreate, "&Recreate the tree");
 173     tree_menu->Append(TreeTest_CollapseAndReset, "C&ollapse and reset");
 174     tree_menu->AppendSeparator();
 175     tree_menu->Append(TreeTest_AddItem, "Append a &new item");
 176     tree_menu->Append(TreeTest_InsertItem, "&Insert a new item");
 177     tree_menu->Append(TreeTest_Delete, "&Delete this item");
 178     tree_menu->Append(TreeTest_DeleteChildren, "Delete &children");
 179     tree_menu->Append(TreeTest_DeleteAll, "Delete &all items");
 180     tree_menu->AppendSeparator();
 181     tree_menu->Append(TreeTest_Count, "Count children of current item");
 182     tree_menu->Append(TreeTest_CountRec, "Recursively count children of current item");
 183     tree_menu->AppendSeparator();
 184     tree_menu->Append(TreeTest_Sort, "Sort children of current item");
 185     tree_menu->Append(TreeTest_SortRev, "Sort in reversed order");
 186     tree_menu->AppendSeparator();
 187     tree_menu->Append(TreeTest_EnsureVisible, "Make the last item &visible");
 188     tree_menu->AppendSeparator();
 189     tree_menu->Append(TreeTest_IncIndent, "Add 5 points to indentation\tAlt-I");
 190     tree_menu->Append(TreeTest_DecIndent, "Reduce indentation by 5 points\tAlt-R");
 191     tree_menu->AppendSeparator();
 192     tree_menu->Append(TreeTest_IncSpacing, "Add 5 points to spacing\tCtrl-I");
 193     tree_menu->Append(TreeTest_DecSpacing, "Reduce spacing by 5 points\tCtrl-R");
 194
 195     item_menu->Append(TreeTest_Dump, "&Dump item children");
 196     item_menu->Append(TreeTest_Rename, "&Rename item...");
 197
 198     item_menu->AppendSeparator();
 199     item_menu->Append(TreeTest_Bold, "Make item &bold");
 200     item_menu->Append(TreeTest_UnBold, "Make item &not bold");
 201     item_menu->AppendSeparator();
 202     item_menu->Append(TreeTest_ToggleIcon, "Toggle the items &icon");
 203
 204 #ifndef NO_MULTIPLE_SELECTION
 205     item_menu->AppendSeparator();
 206     item_menu->Append(TreeTest_DumpSelected, "Dump selected items\tAlt-D");
 207     item_menu->Append(TreeTest_Select, "Select current item\tAlt-S");
 208     item_menu->Append(TreeTest_Unselect, "Unselect everything\tAlt-U");
 209 #endif // NO_MULTIPLE_SELECTION
 210
 211     wxMenuBar *menu_bar = new wxMenuBar;
 212     menu_bar->Append(file_menu, "&File");
 213     menu_bar->Append(tree_menu, "&Tree");
 214     menu_bar->Append(item_menu, "&Item");
 215     SetMenuBar(menu_bar);
 216
 217     menu_bar->Check(TreeTest_ToggleImages, TRUE);
 218
 219     m_treeCtrl = new MyTreeCtrl(this, TreeTest_Ctrl,
 220                                 wxDefaultPosition, wxDefaultSize,
 221                                 wxTR_MAC_BUTTONS | wxTR_NO_LINES |
 222                                 wxTR_EDIT_LABELS |
 223 #ifndef NO_VARIABLE_HEIGHT
 224                                 wxTR_HAS_VARIABLE_ROW_HEIGHT |
 225 #endif
 226                                 wxSUNKEN_BORDER);
 227
 228 //    m_treeCtrl->SetBackgroundColour( *wxLIGHT_GREY );
 229
 230     m_textCtrl = new wxTextCtrl(this, -1, "",
 231                                 wxDefaultPosition, wxDefaultSize,
 232                                 wxTE_MULTILINE | wxSUNKEN_BORDER);
 233
 234     // create a status bar with 3 panes
 235     CreateStatusBar(3);
 236     SetStatusText("", 0);
 237
 238 #ifdef __WXMOTIF__
 239     // For some reason, we get a memcpy crash in wxLogStream::DoLogStream
 240     // on gcc/wxMotif, if we use wxLogTextCtl. Maybe it's just gcc?
 241     delete wxLog::SetActiveTarget(new wxLogStderr);
 242 #else
 243     // set our text control as the log target
 244     wxLogTextCtrl *logWindow = new wxLogTextCtrl(m_textCtrl);
 245     delete wxLog::SetActiveTarget(logWindow);
 246 #endif
 247 }
 248
 249 MyFrame::~MyFrame()
 250 {
 251     delete wxLog::SetActiveTarget(NULL);
 252 }
 253
 254 void MyFrame::OnSize(wxSizeEvent& event)
 255 {
 256     if ( m_treeCtrl && m_textCtrl )
 257     {
 258         Resize(GetClientSize());
 259     }
 260
 261     event.Skip();
 262 }
 263
 264 void MyFrame::Resize(const wxSize& size)
 265 {
 266     m_treeCtrl->SetSize(0, 0, size.x, 2*size.y/3);
 267     m_textCtrl->SetSize(0, 2*size.y/3, size.x, size.y/3);
 268 }
 269
 270 void MyFrame::OnQuit(wxCommandEvent& WXUNUSED(event))
 271 {
 272     Close(TRUE);
 273 }
 274
 275 void MyFrame::OnAbout(wxCommandEvent& WXUNUSED(event))
 276 {
 277     wxMessageBox("Tree test sample\n"
 278                  "(c) Julian Smart 1997, Vadim Zeitlin 1998",
 279                  "About tree test",
 280                  wxOK | wxICON_INFORMATION, this);
 281 }
 282
 283 void MyFrame::OnRename(wxCommandEvent& WXUNUSED(event))
 284 {
 285     wxTreeItemId item = m_treeCtrl->GetSelection();
 286
 287     CHECK_ITEM( item );
 288
 289     // old code - now we edit in place
 290 #if 0
 291     static wxString s_text;
 292     s_text = wxGetTextFromUser("New name: ", "Tree sample question",
 293             s_text, this);
 294     if ( !s_text.IsEmpty() )
 295     {
 296         m_treeCtrl->SetItemText(item, s_text);
 297     }
 298 #endif // 0
 299
 300     // TODO demonstrate creating a custom edit control...
 301     (void)m_treeCtrl->EditLabel(item);
 302 }
 303
 304 void MyFrame::OnCount(wxCommandEvent& WXUNUSED(event))
 305 {
 306     wxTreeItemId item = m_treeCtrl->GetSelection();
 307
 308     CHECK_ITEM( item );
 309
 310     int i = m_treeCtrl->GetChildrenCount( item, FALSE );
 311
 312     wxLogMessage(wxT("%d children"), i);
 313 }
 314
 315 void MyFrame::OnCountRec(wxCommandEvent& WXUNUSED(event))
 316 {
 317     wxTreeItemId item = m_treeCtrl->GetSelection();
 318
 319     CHECK_ITEM( item );
 320
 321     int i = m_treeCtrl->GetChildrenCount( item );
 322
 323     wxLogMessage(wxT("%d children"), i);
 324 }
 325
 326 void MyFrame::DoSort(bool reverse)
 327 {
 328     wxTreeItemId item = m_treeCtrl->GetSelection();
 329
 330     CHECK_ITEM( item );
 331
 332     m_treeCtrl->DoSortChildren(item, reverse);
 333 }
 334
 335 void MyFrame::OnDump(wxCommandEvent& WXUNUSED(event))
 336 {
 337     wxTreeItemId root = m_treeCtrl->GetSelection();
 338
 339     CHECK_ITEM( root );
 340
 341     m_treeCtrl->GetItemsRecursively(root, -1);
 342 }
 343
 344 #ifndef NO_MULTIPLE_SELECTION
 345
 346 void MyFrame::OnToggleSel(wxCommandEvent& WXUNUSED(event))
 347 {
 348     long style = m_treeCtrl->GetWindowStyle();
 349     if ( style & wxTR_MULTIPLE )
 350         style &= ~wxTR_MULTIPLE;
 351     else
 352         style |= wxTR_MULTIPLE;
 353
 354     delete m_treeCtrl;
 355
 356     m_treeCtrl = new MyTreeCtrl(this, TreeTest_Ctrl,
 357                                 wxDefaultPosition, wxDefaultSize,
 358                                 style);
 359     Resize(GetClientSize());
 360 }
 361
 362 void MyFrame::OnDumpSelected(wxCommandEvent& WXUNUSED(event))
 363 {
 364     wxArrayTreeItemIds array;
 365
 366     size_t count = m_treeCtrl->GetSelections(array);
 367     wxLogMessage(wxT("%u items selected"), count);
 368
 369     for ( size_t n = 0; n < count; n++ )
 370     {
 371         wxLogMessage("\t%s", m_treeCtrl->GetItemText(array.Item(n)).c_str());
 372     }
 373 }
 374
 375 void MyFrame::OnSelect(wxCommandEvent& event)
 376 {
 377     m_treeCtrl->SelectItem(m_treeCtrl->GetSelection());
 378 }
 379
 380 void MyFrame::OnUnselect(wxCommandEvent& event)
 381 {
 382     m_treeCtrl->UnselectAll();
 383 }
 384
 385 #endif // NO_MULTIPLE_SELECTION
 386
 387 void MyFrame::DoSetBold(bool bold)
 388 {
 389     wxTreeItemId item = m_treeCtrl->GetSelection();
 390
 391     CHECK_ITEM( item );
 392
 393     m_treeCtrl->SetItemBold(item, bold);
 394 }
 395
 396 void MyFrame::OnDelete(wxCommandEvent& WXUNUSED(event))
 397 {
 398     wxTreeItemId item = m_treeCtrl->GetSelection();
 399
 400     CHECK_ITEM( item );
 401
 402     m_treeCtrl->Delete(item);
 403 }
 404
 405 void MyFrame::OnDeleteChildren(wxCommandEvent& WXUNUSED(event))
 406 {
 407     wxTreeItemId item = m_treeCtrl->GetSelection();
 408
 409     CHECK_ITEM( item );
 410
 411     m_treeCtrl->DeleteChildren(item);
 412 }
 413
 414 void MyFrame::OnDeleteAll(wxCommandEvent& WXUNUSED(event))
 415 {
 416     m_treeCtrl->DeleteAllItems();
 417 }
 418
 419 void MyFrame::OnRecreate(wxCommandEvent& event)
 420 {
 421     OnDeleteAll(event);
 422     m_treeCtrl->AddTestItemsToTree(3, 2);
 423 }
 424
 425 void MyFrame::OnSetImageSize(wxCommandEvent& event)
 426 {
 427     long size = wxGetNumberFromUser("Enter the size for the images to use",
 428                                     "Size: ",
 429                                     "TreeCtrl sample",
 430                                     16);
 431     if ( size == -1 )
 432         return;
 433
 434     m_treeCtrl->CreateImageList((int)size);
 435
 436     OnRecreate(event);
 437 }
 438
 439 void MyFrame::OnToggleImages(wxCommandEvent& event)
 440 {
 441     if ( wxGetApp().ShowImages() )
 442     {
 443         m_treeCtrl->CreateImageList(-1);
 444
 445         wxGetApp().SetShowImages(FALSE);
 446     }
 447     else
 448     {
 449         m_treeCtrl->CreateImageList();
 450
 451         wxGetApp().SetShowImages(TRUE);
 452     }
 453
 454     OnRecreate(event);
 455 }
 456
 457 void MyFrame::OnCollapseAndReset(wxCommandEvent& event)
 458 {
 459     m_treeCtrl->CollapseAndReset(m_treeCtrl->GetRootItem());
 460 }
 461
 462 void MyFrame::OnEnsureVisible(wxCommandEvent& event)
 463 {
 464     m_treeCtrl->DoEnsureVisible();
 465 }
 466
 467 void MyFrame::OnInsertItem(wxCommandEvent& WXUNUSED(event))
 468 {
 469     int image = wxGetApp().ShowImages() ? MyTreeCtrl::TreeCtrlIcon_File : -1;
 470     m_treeCtrl->InsertItem(m_treeCtrl->GetRootItem(), image, "2nd item");
 471 }
 472
 473 void MyFrame::OnAddItem(wxCommandEvent& WXUNUSED(event))
 474 {
 475     static int s_num = 0;
 476
 477     wxString text;
 478     text.Printf("Item #%d", ++s_num);
 479
 480     m_treeCtrl->AppendItem(m_treeCtrl->GetRootItem(),
 481                            text /*,
 482                            MyTreeCtrl::TreeCtrlIcon_File */ );
 483 }
 484
 485 void MyFrame::OnIncIndent(wxCommandEvent& WXUNUSED(event))
 486 {
 487     unsigned int indent = m_treeCtrl->GetIndent();
 488     if (indent < 100)
 489         m_treeCtrl->SetIndent( indent+5 );
 490 }
 491
 492 void MyFrame::OnDecIndent(wxCommandEvent& WXUNUSED(event))
 493 {
 494     unsigned int indent = m_treeCtrl->GetIndent();
 495     if (indent > 10)
 496         m_treeCtrl->SetIndent( indent-5 );
 497 }
 498
 499 void MyFrame::OnIncSpacing(wxCommandEvent& WXUNUSED(event))
 500 {
 501     unsigned int indent = m_treeCtrl->GetSpacing();
 502     if (indent < 100)
 503         m_treeCtrl->SetSpacing( indent+5 );
 504 }
 505
 506 void MyFrame::OnDecSpacing(wxCommandEvent& WXUNUSED(event))
 507 {
 508     unsigned int indent = m_treeCtrl->GetSpacing();
 509     if (indent > 10)
 510         m_treeCtrl->SetSpacing( indent-5 );
 511 }
 512
 513 void MyFrame::OnToggleIcon(wxCommandEvent& WXUNUSED(event))
 514 {
 515     wxTreeItemId item = m_treeCtrl->GetSelection();
 516
 517     CHECK_ITEM( item );
 518
 519     m_treeCtrl->DoToggleIcon(item);
 520 }
 521
 522 // MyTreeCtrl implementation
 523 #if USE_GENERIC_TREECTRL
 524 IMPLEMENT_DYNAMIC_CLASS(MyTreeCtrl, wxGenericTreeCtrl)
 525 #else
 526 IMPLEMENT_DYNAMIC_CLASS(MyTreeCtrl, wxTreeCtrl)
 527 #endif
 528
 529 MyTreeCtrl::MyTreeCtrl(wxWindow *parent, const wxWindowID id,
 530                        const wxPoint& pos, const wxSize& size,
 531                        long style)
 532           : wxTreeCtrl(parent, id, pos, size, style)
 533 {
 534     m_reverseSort = FALSE;
 535     m_imageListNormal = NULL;
 536
 537     CreateImageList();
 538
 539     // Add some items to the tree
 540     AddTestItemsToTree(3, 2);
 541 }
 542
 543 void MyTreeCtrl::CreateImageList(int size)
 544 {
 545     delete m_imageListNormal;
 546
 547     if ( size == -1 )
 548     {
 549         m_imageListNormal = NULL;
 550     }
 551     else
 552     {
 553         // Make an image list containing small icons
 554         m_imageListNormal = new wxImageList(size, size, TRUE);
 555
 556         // should correspond to TreeCtrlIcon_xxx enum
 557 #if defined(__WXMSW__) && defined(__WIN16__)
 558         m_imageListNormal->Add(wxBitmap("bitmap1", wxBITMAP_TYPE_BMP_RESOURCE));
 559         m_imageListNormal->Add(wxBitmap("bitmap2", wxBITMAP_TYPE_BMP_RESOURCE));
 560         m_imageListNormal->Add(wxBitmap("bitmap3", wxBITMAP_TYPE_BMP_RESOURCE));
 561         m_imageListNormal->Add(wxBitmap("bitmap4", wxBITMAP_TYPE_BMP_RESOURCE));
 562         m_imageListNormal->Add(wxBitmap("bitmap5", wxBITMAP_TYPE_BMP_RESOURCE));
 563 #else // !MSW
 564         wxIcon icons[5];
 565         icons[0] = wxICON(icon1);
 566         icons[1] = wxICON(icon2);
 567         icons[2] = wxICON(icon3);
 568         icons[3] = wxICON(icon4);
 569         icons[4] = wxICON(icon5);
 570
 571         int sizeOrig = icons[0].GetWidth();
 572         for ( size_t i = 0; i < WXSIZEOF(icons); i++ )
 573         {
 574             if ( size == sizeOrig )
 575             {
 576                 m_imageListNormal->Add(icons[i]);
 577             }
 578             else
 579             {
 580                 m_imageListNormal->Add(wxImage(icons[i]).Rescale(size, size).
 581                                         ConvertToBitmap());
 582             }
 583         }
 584 #endif // MSW/!MSW
 585     }
 586
 587     SetImageList(m_imageListNormal);
 588 }
 589
 590 MyTreeCtrl::~MyTreeCtrl()
 591 {
 592     delete m_imageListNormal;
 593 }
 594
 595 int MyTreeCtrl::OnCompareItems(const wxTreeItemId& item1,
 596                                const wxTreeItemId& item2)
 597 {
 598     if ( m_reverseSort )
 599     {
 600         // just exchange 1st and 2nd items
 601         return wxTreeCtrl::OnCompareItems(item2, item1);
 602     }
 603     else
 604     {
 605         return wxTreeCtrl::OnCompareItems(item1, item2);
 606     }
 607 }
 608
 609 void MyTreeCtrl::AddItemsRecursively(const wxTreeItemId& idParent,
 610                                      size_t numChildren,
 611                                      size_t depth,
 612                                      size_t folder)
 613 {
 614     if ( depth > 0 )
 615     {
 616         bool hasChildren = depth > 1;
 617
 618         wxString str;
 619         for ( size_t n = 0; n < numChildren; n++ )
 620         {
 621             // at depth 1 elements won't have any more children
 622             if ( hasChildren )
 623                 str.Printf("%s child %d", "Folder", n + 1);
 624             else
 625                 str.Printf("%s child %d.%d", "File", folder, n + 1);
 626
 627             // here we pass to AppendItem() normal and selected item images (we
 628             // suppose that selected image follows the normal one in the enum)
 629             int image, imageSel;
 630             if ( wxGetApp().ShowImages() )
 631             {
 632                 image = depth == 1 ? TreeCtrlIcon_File : TreeCtrlIcon_Folder;
 633                 imageSel = image + 1;
 634             }
 635             else
 636             {
 637                 image = imageSel = -1;
 638             }
 639             wxTreeItemId id = AppendItem(idParent, str, image, imageSel,
 640                                          new MyTreeItemData(str));
 641
 642             // and now we also set the expanded one (only for the folders)
 643             if ( hasChildren && wxGetApp().ShowImages() )
 644             {
 645                 SetItemImage(id, TreeCtrlIcon_FolderOpened,
 646                              wxTreeItemIcon_Expanded);
 647             }
 648
 649             // remember the last child for OnEnsureVisible()
 650             if ( !hasChildren && n == numChildren - 1 )
 651             {
 652                 m_lastItem = id;
 653             }
 654
 655             AddItemsRecursively(id, numChildren, depth - 1, n + 1);
 656         }
 657     }
 658     //else: done!
 659 }
 660
 661 void MyTreeCtrl::AddTestItemsToTree(size_t numChildren,
 662                                     size_t depth)
 663 {
 664     int image = wxGetApp().ShowImages() ? MyTreeCtrl::TreeCtrlIcon_Folder : -1;
 665     wxTreeItemId rootId = AddRoot("Root",
 666                                   image, image,
 667                                   new MyTreeItemData("Root item"));
 668     if ( image != -1 )
 669     {
 670         SetItemImage(rootId, TreeCtrlIcon_FolderOpened, wxTreeItemIcon_Expanded);
 671     }
 672
 673     AddItemsRecursively(rootId, numChildren, depth, 0);
 674
 675     // set some colours/fonts for testing
 676     SetItemFont(rootId, *wxITALIC_FONT);
 677
 678     long cookie;
 679     wxTreeItemId id = GetFirstChild(rootId, cookie);
 680     SetItemTextColour(id, *wxBLUE);
 681
 682     id = GetNextChild(rootId, cookie);
 683     id = GetNextChild(rootId, cookie);
 684     SetItemTextColour(id, *wxRED);
 685     SetItemBackgroundColour(id, *wxLIGHT_GREY);
 686 }
 687
 688 void MyTreeCtrl::GetItemsRecursively(const wxTreeItemId& idParent, long cookie)
 689 {
 690     wxTreeItemId id;
 691
 692     if( cookie == -1 )
 693         id = GetFirstChild(idParent, cookie);
 694     else
 695         id = GetNextChild(idParent, cookie);
 696
 697     if(id <= 0)
 698         return;
 699
 700     wxString text = GetItemText(id);
 701     wxLogMessage(text);
 702
 703     if (ItemHasChildren(id))
 704         GetItemsRecursively(id,-1);
 705
 706     GetItemsRecursively(idParent, cookie);
 707 }
 708
 709 void MyTreeCtrl::DoToggleIcon(const wxTreeItemId& item)
 710 {
 711     int image = GetItemImage(item) == TreeCtrlIcon_Folder ? TreeCtrlIcon_File
 712                                                           : TreeCtrlIcon_Folder;
 713
 714     SetItemImage(item, image);
 715 }
 716
 717
 718 // avoid repetition
 719 #define TREE_EVENT_HANDLER(name)                            \
 720 void MyTreeCtrl::name(wxTreeEvent& event)                   \
 721 {                                                           \
 722     wxLogMessage(#name);                                    \
 723     event.Skip();                                           \
 724 }
 725
 726 TREE_EVENT_HANDLER(OnBeginRDrag)
 727 TREE_EVENT_HANDLER(OnDeleteItem)
 728 TREE_EVENT_HANDLER(OnGetInfo)
 729 TREE_EVENT_HANDLER(OnSetInfo)
 730 TREE_EVENT_HANDLER(OnItemExpanded)
 731 TREE_EVENT_HANDLER(OnItemExpanding)
 732 TREE_EVENT_HANDLER(OnItemCollapsed)
 733 TREE_EVENT_HANDLER(OnSelChanged)
 734 TREE_EVENT_HANDLER(OnSelChanging)
 735 TREE_EVENT_HANDLER(OnTreeKeyDown)
 736
 737 #undef TREE_EVENT_HANDLER
 738
 739 void MyTreeCtrl::OnBeginDrag(wxTreeEvent& event)
 740 {
 741     // need to explicitly allow drag
 742     if ( event.GetItem() != GetRootItem() )
 743     {
 744         m_draggedItem = event.GetItem();
 745
 746         wxLogMessage("OnBeginDrag: started dragging %s",
 747                      GetItemText(m_draggedItem).c_str());
 748
 749         event.Allow();
 750     }
 751     else
 752     {
 753         wxLogMessage("OnBeginDrag: this item can't be dragged.");
 754     }
 755 }
 756
 757 void MyTreeCtrl::OnEndDrag(wxTreeEvent& event)
 758 {
 759     wxTreeItemId itemSrc = m_draggedItem,
 760                  itemDst = event.GetItem();
 761     m_draggedItem = (wxTreeItemId)0l;
 762
 763     // where to copy the item?
 764     if ( itemDst.IsOk() && !ItemHasChildren(itemDst) )
 765     {
 766         // copy to the parent then
 767         itemDst = GetParent(itemDst);
 768     }
 769
 770     if ( !itemDst.IsOk() )
 771     {
 772         wxLogMessage("OnEndDrag: can't drop here.");
 773
 774         return;
 775     }
 776
 777     wxString text = GetItemText(itemSrc);
 778     wxLogMessage("OnEndDrag: '%s' copied to '%s'.",
 779                  text.c_str(), GetItemText(itemDst).c_str());
 780
 781     // just do append here - we could also insert it just before/after the item
 782     // on which it was dropped, but this requires slightly more work... we also
 783     // completely ignore the client data and icon of the old item but could
 784     // copy them as well.
 785     //
 786     // Finally, we only copy one item here but we might copy the entire tree if
 787     // we were dragging a folder.
 788     int image = wxGetApp().ShowImages() ? TreeCtrlIcon_File : -1;
 789     AppendItem(itemDst, text, image);
 790 }
 791
 792 void MyTreeCtrl::OnBeginLabelEdit(wxTreeEvent& event)
 793 {
 794     wxLogMessage("OnBeginLabelEdit");
 795
 796     // for testing, prevent this items label editing
 797     wxTreeItemId itemId = event.GetItem();
 798     if ( IsTestItem(itemId) )
 799     {
 800         wxMessageBox("You can't edit this item.");
 801
 802         event.Veto();
 803     }
 804 }
 805
 806 void MyTreeCtrl::OnEndLabelEdit(wxTreeEvent& event)
 807 {
 808     wxLogMessage("OnEndLabelEdit");
 809
 810     // don't allow anything except letters in the labels
 811     if ( !event.GetLabel().IsWord() )
 812     {
 813         wxMessageBox("The label should contain only letters.");
 814
 815         event.Veto();
 816     }
 817 }
 818
 819 void MyTreeCtrl::OnItemCollapsing(wxTreeEvent& event)
 820 {
 821     wxLogMessage("OnItemCollapsing");
 822
 823     // for testing, prevent the user from collapsing the first child folder
 824     wxTreeItemId itemId = event.GetItem();
 825     if ( IsTestItem(itemId) )
 826     {
 827         wxMessageBox("You can't collapse this item.");
 828
 829         event.Veto();
 830     }
 831 }
 832
 833 void MyTreeCtrl::OnItemActivated(wxTreeEvent& event)
 834 {
 835     // show some info about this item
 836     wxTreeItemId itemId = event.GetItem();
 837     MyTreeItemData *item = (MyTreeItemData *)GetItemData(itemId);
 838
 839     if ( item != NULL )
 840     {
 841         item->ShowInfo(this);
 842     }
 843
 844     wxLogMessage("OnItemActivated");
 845 }
 846
 847 void MyTreeCtrl::OnItemRightClick(wxTreeEvent& event)
 848 {
 849     ShowMenu(event.GetItem(), event.GetPoint());
 850 }
 851
 852 void MyTreeCtrl::OnRMouseUp(wxMouseEvent& event)
 853 {
 854     wxPoint pt = event.GetPosition();
 855     ShowMenu(HitTest(pt), pt);
 856 }
 857
 858 void MyTreeCtrl::ShowMenu(wxTreeItemId id, const wxPoint& pt)
 859 {
 860     wxString title;
 861     if ( id.IsOk() )
 862     {
 863         title << _T("Menu for ") << GetItemText(id);
 864     }
 865     else
 866     {
 867         title = _T("Menu for no particular item");
 868     }
 869
 870     wxMenu menu(title);
 871     menu.Append(TreeTest_About, _T("&About..."));
 872     menu.Append(TreeTest_Dump, _T("&Dump"));
 873
 874     PopupMenu(&menu, pt);
 875 }
 876
 877 void MyTreeCtrl::OnRMouseDClick(wxMouseEvent& event)
 878 {
 879     wxTreeItemId id = HitTest(event.GetPosition());
 880     if ( !id )
 881         wxLogMessage("No item under mouse");
 882     else
 883     {
 884         MyTreeItemData *item = (MyTreeItemData *)GetItemData(id);
 885         if ( item )
 886             wxLogMessage("Item '%s' under mouse", item->GetDesc());
 887     }
 888 }
 889
 890 static inline const char *Bool2String(bool b)
 891 {
 892     return b ? "" : "not ";
 893 }
 894
 895 void MyTreeItemData::ShowInfo(wxTreeCtrl *tree)
 896 {
 897     wxLogMessage("Item '%s': %sselected, %sexpanded, %sbold,\n"
 898                  "%u children (%u immediately under this item).",
 899                  m_desc.c_str(),
 900                  Bool2String(tree->IsSelected(GetId())),
 901                  Bool2String(tree->IsExpanded(GetId())),
 902                  Bool2String(tree->IsBold(GetId())),
 903                  tree->GetChildrenCount(GetId()),
 904                  tree->GetChildrenCount(GetId(), FALSE));
 905 }