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
   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   #include "wx/log.h"
  27 #endif
  28
  29 #include "wx/colordlg.h"
  30
  31 #include "wx/image.h"
  32 #include "wx/imaglist.h"
  33 #include "wx/treectrl.h"
  34
  35 #include "math.h"
  36
  37 #ifdef __WIN32__
  38     // this is not supported by native control
  39     #define NO_VARIABLE_HEIGHT
  40 #endif
  41
  42 #include "treetest.h"
  43
  44 #include "icon1.xpm"
  45 #include "icon2.xpm"
  46 #include "icon3.xpm"
  47 #include "icon4.xpm"
  48 #include "icon5.xpm"
  49 #include "mondrian.xpm"
  50
  51
  52 // verify that the item is ok and insult the user if it is not
  53 #define CHECK_ITEM( item ) if ( !item.IsOk() ) {                                 \
  54                              wxMessageBox(wxT("Please select some item first!"), \
  55                                           wxT("Tree sample error"),              \
  56                                           wxOK | wxICON_EXCLAMATION,             \
  57                                           this);                                 \
  58                              return;                                             \
  59                            }
  60
  61 #define MENU_LINK(name) EVT_MENU(TreeTest_##name, MyFrame::On##name)
  62
  63 BEGIN_EVENT_TABLE(MyFrame, wxFrame)
  64     EVT_IDLE(MyFrame::OnIdle)
  65     EVT_SIZE(MyFrame::OnSize)
  66
  67     MENU_LINK(Quit)
  68     MENU_LINK(About)
  69
  70     MENU_LINK(TogButtons)
  71     MENU_LINK(TogTwist)
  72     MENU_LINK(TogLines)
  73     MENU_LINK(TogEdit)
  74     MENU_LINK(TogHideRoot)
  75     MENU_LINK(TogRootLines)
  76     MENU_LINK(TogBorder)
  77     MENU_LINK(TogFullHighlight)
  78     MENU_LINK(SetFgColour)
  79     MENU_LINK(SetBgColour)
  80     MENU_LINK(ResetStyle)
  81
  82     MENU_LINK(Dump)
  83 #ifndef NO_MULTIPLE_SELECTION
  84     MENU_LINK(DumpSelected)
  85     MENU_LINK(Select)
  86     MENU_LINK(Unselect)
  87     MENU_LINK(ToggleSel)
  88 #endif // NO_MULTIPLE_SELECTION
  89     MENU_LINK(Rename)
  90     MENU_LINK(Count)
  91     MENU_LINK(CountRec)
  92     MENU_LINK(Sort)
  93     MENU_LINK(SortRev)
  94     MENU_LINK(SetBold)
  95     MENU_LINK(ClearBold)
  96     MENU_LINK(Delete)
  97     MENU_LINK(DeleteChildren)
  98     MENU_LINK(DeleteAll)
  99     MENU_LINK(Recreate)
 100     MENU_LINK(ToggleImages)
 101     MENU_LINK(ToggleButtons)
 102     MENU_LINK(SetImageSize)
 103     MENU_LINK(CollapseAndReset)
 104     MENU_LINK(EnsureVisible)
 105     MENU_LINK(AddItem)
 106     MENU_LINK(InsertItem)
 107     MENU_LINK(IncIndent)
 108     MENU_LINK(DecIndent)
 109     MENU_LINK(IncSpacing)
 110     MENU_LINK(DecSpacing)
 111     MENU_LINK(ToggleIcon)
 112 #undef MENU_LINK
 113
 114 END_EVENT_TABLE()
 115
 116 #if USE_GENERIC_TREECTRL
 117 BEGIN_EVENT_TABLE(MyTreeCtrl, wxGenericTreeCtrl)
 118 #else
 119 BEGIN_EVENT_TABLE(MyTreeCtrl, wxTreeCtrl)
 120 #endif
 121     EVT_TREE_BEGIN_DRAG(TreeTest_Ctrl, MyTreeCtrl::OnBeginDrag)
 122     EVT_TREE_BEGIN_RDRAG(TreeTest_Ctrl, MyTreeCtrl::OnBeginRDrag)
 123     EVT_TREE_END_DRAG(TreeTest_Ctrl, MyTreeCtrl::OnEndDrag)
 124     EVT_TREE_BEGIN_LABEL_EDIT(TreeTest_Ctrl, MyTreeCtrl::OnBeginLabelEdit)
 125     EVT_TREE_END_LABEL_EDIT(TreeTest_Ctrl, MyTreeCtrl::OnEndLabelEdit)
 126     EVT_TREE_DELETE_ITEM(TreeTest_Ctrl, MyTreeCtrl::OnDeleteItem)
 127 #if 0       // there are so many of those that logging them causes flicker
 128     EVT_TREE_GET_INFO(TreeTest_Ctrl, MyTreeCtrl::OnGetInfo)
 129 #endif
 130     EVT_TREE_SET_INFO(TreeTest_Ctrl, MyTreeCtrl::OnSetInfo)
 131     EVT_TREE_ITEM_EXPANDED(TreeTest_Ctrl, MyTreeCtrl::OnItemExpanded)
 132     EVT_TREE_ITEM_EXPANDING(TreeTest_Ctrl, MyTreeCtrl::OnItemExpanding)
 133     EVT_TREE_ITEM_COLLAPSED(TreeTest_Ctrl, MyTreeCtrl::OnItemCollapsed)
 134     EVT_TREE_ITEM_COLLAPSING(TreeTest_Ctrl, MyTreeCtrl::OnItemCollapsing)
 135     //EVT_TREE_ITEM_RIGHT_CLICK(TreeTest_Ctrl, MyTreeCtrl::OnItemRightClick)
 136
 137     EVT_CONTEXT_MENU(MyTreeCtrl::OnContextMenu)
 138     EVT_TREE_SEL_CHANGED(TreeTest_Ctrl, MyTreeCtrl::OnSelChanged)
 139     EVT_TREE_SEL_CHANGING(TreeTest_Ctrl, MyTreeCtrl::OnSelChanging)
 140     EVT_TREE_KEY_DOWN(TreeTest_Ctrl, MyTreeCtrl::OnTreeKeyDown)
 141     EVT_TREE_ITEM_ACTIVATED(TreeTest_Ctrl, MyTreeCtrl::OnItemActivated)
 142     EVT_RIGHT_DCLICK(MyTreeCtrl::OnRMouseDClick)
 143 END_EVENT_TABLE()
 144
 145 IMPLEMENT_APP(MyApp)
 146
 147 bool MyApp::OnInit()
 148 {
 149     // Create the main frame window
 150     MyFrame *frame = new MyFrame(wxT("wxTreeCtrl Test"), 50, 50, 450, 600);
 151
 152     // Show the frame
 153     frame->Show(TRUE);
 154     SetTopWindow(frame);
 155
 156     return TRUE;
 157 }
 158
 159
 160 // My frame constructor
 161 MyFrame::MyFrame(const wxString& title, int x, int y, int w, int h)
 162        : wxFrame((wxFrame *)NULL, -1, title, wxPoint(x, y), wxSize(w, h)),
 163          m_treeCtrl(NULL), m_textCtrl(NULL)
 164 {
 165     // This reduces flicker effects - even better would be to define
 166     // OnEraseBackground to do nothing. When the tree control's scrollbars are
 167     // show or hidden, the frame is sent a background erase event.
 168     SetBackgroundColour(wxColour(255, 255, 255));
 169
 170     // Give it an icon
 171     SetIcon(wxICON(mondrian));
 172
 173 #if wxUSE_MENUS
 174     // Make a menubar
 175     wxMenu *file_menu = new wxMenu,
 176            *style_menu = new wxMenu,
 177            *tree_menu = new wxMenu,
 178            *item_menu = new wxMenu;
 179
 180     file_menu->Append(TreeTest_About, wxT("&About..."));
 181     file_menu->AppendSeparator();
 182     file_menu->Append(TreeTest_Quit, wxT("E&xit\tAlt-X"));
 183
 184     style_menu->Append(TreeTest_TogButtons, wxT("Toggle &normal buttons"), wxT(""), TRUE);
 185     style_menu->Append(TreeTest_TogTwist, wxT("Toggle &twister buttons"), wxT(""), TRUE);
 186     style_menu->Append(TreeTest_ToggleButtons, wxT("Toggle image &buttons"), wxT(""), TRUE);
 187     style_menu->AppendSeparator();
 188     style_menu->Append(TreeTest_TogLines, wxT("Toggle &connecting lines"), wxT(""), TRUE);
 189     style_menu->Append(TreeTest_TogRootLines, wxT("Toggle &lines at root"), wxT(""), TRUE);
 190     style_menu->Append(TreeTest_TogHideRoot, wxT("Toggle &hidden root"), wxT(""), TRUE);
 191     style_menu->Append(TreeTest_TogBorder, wxT("Toggle &item border"), wxT(""), TRUE);
 192     style_menu->Append(TreeTest_TogFullHighlight, wxT("Toggle &full row highlight"), wxT(""), TRUE);
 193     style_menu->Append(TreeTest_TogEdit, wxT("Toggle &edit mode"), wxT(""), TRUE);
 194 #ifndef NO_MULTIPLE_SELECTION
 195     style_menu->Append(TreeTest_ToggleSel, wxT("Toggle &selection mode"), wxT(""), TRUE);
 196 #endif // NO_MULTIPLE_SELECTION
 197     style_menu->Append(TreeTest_ToggleImages, wxT("Toggle show ima&ges"), wxT(""), TRUE);
 198     style_menu->Append(TreeTest_SetImageSize, wxT("Set image si&ze..."));
 199     style_menu->AppendSeparator();
 200     style_menu->Append(TreeTest_SetFgColour, wxT("Set &foreground colour..."));
 201     style_menu->Append(TreeTest_SetBgColour, wxT("Set &background colour..."));
 202     style_menu->AppendSeparator();
 203     style_menu->Append(TreeTest_ResetStyle, wxT("&Reset to default\tF10"));
 204
 205     tree_menu->Append(TreeTest_Recreate, wxT("&Recreate the tree"));
 206     tree_menu->Append(TreeTest_CollapseAndReset, wxT("C&ollapse and reset"));
 207     tree_menu->AppendSeparator();
 208     tree_menu->Append(TreeTest_AddItem, wxT("Append a &new item"));
 209     tree_menu->Append(TreeTest_InsertItem, wxT("&Insert a new item"));
 210     tree_menu->Append(TreeTest_Delete, wxT("&Delete this item"));
 211     tree_menu->Append(TreeTest_DeleteChildren, wxT("Delete &children"));
 212     tree_menu->Append(TreeTest_DeleteAll, wxT("Delete &all items"));
 213     tree_menu->AppendSeparator();
 214     tree_menu->Append(TreeTest_Count, wxT("Count children of current item"));
 215     tree_menu->Append(TreeTest_CountRec, wxT("Recursively count children of current item"));
 216     tree_menu->AppendSeparator();
 217     tree_menu->Append(TreeTest_Sort, wxT("Sort children of current item"));
 218     tree_menu->Append(TreeTest_SortRev, wxT("Sort in reversed order"));
 219     tree_menu->AppendSeparator();
 220     tree_menu->Append(TreeTest_EnsureVisible, wxT("Make the last item &visible"));
 221     tree_menu->AppendSeparator();
 222     tree_menu->Append(TreeTest_IncIndent, wxT("Add 5 points to indentation\tAlt-I"));
 223     tree_menu->Append(TreeTest_DecIndent, wxT("Reduce indentation by 5 points\tAlt-R"));
 224     tree_menu->AppendSeparator();
 225     tree_menu->Append(TreeTest_IncSpacing, wxT("Add 5 points to spacing\tCtrl-I"));
 226     tree_menu->Append(TreeTest_DecSpacing, wxT("Reduce spacing by 5 points\tCtrl-R"));
 227
 228     item_menu->Append(TreeTest_Dump, wxT("&Dump item children"));
 229     item_menu->Append(TreeTest_Rename, wxT("&Rename item..."));
 230
 231     item_menu->AppendSeparator();
 232     item_menu->Append(TreeTest_SetBold, wxT("Make item &bold"));
 233     item_menu->Append(TreeTest_ClearBold, wxT("Make item &not bold"));
 234     item_menu->AppendSeparator();
 235     item_menu->Append(TreeTest_ToggleIcon, wxT("Toggle the item's &icon"));
 236
 237 #ifndef NO_MULTIPLE_SELECTION
 238     item_menu->AppendSeparator();
 239     item_menu->Append(TreeTest_DumpSelected, wxT("Dump selected items\tAlt-D"));
 240     item_menu->Append(TreeTest_Select, wxT("Select current item\tAlt-S"));
 241     item_menu->Append(TreeTest_Unselect, wxT("Unselect everything\tAlt-U"));
 242 #endif // NO_MULTIPLE_SELECTION
 243
 244     wxMenuBar *menu_bar = new wxMenuBar;
 245     menu_bar->Append(file_menu, wxT("&File"));
 246     menu_bar->Append(style_menu, wxT("&Style"));
 247     menu_bar->Append(tree_menu, wxT("&Tree"));
 248     menu_bar->Append(item_menu, wxT("&Item"));
 249     SetMenuBar(menu_bar);
 250 #endif // wxUSE_MENUS
 251
 252     // create the controls
 253     m_textCtrl = new wxTextCtrl(this, -1, wxT(""),
 254                                 wxDefaultPosition, wxDefaultSize,
 255                                 wxTE_MULTILINE | wxSUNKEN_BORDER);
 256
 257     CreateTreeWithDefStyle();
 258
 259     menu_bar->Check(TreeTest_ToggleImages, TRUE);
 260
 261 #if wxUSE_STATUSBAR
 262     // create a status bar
 263     CreateStatusBar(2);
 264 #endif // wxUSE_STATUSBAR
 265
 266 #ifdef __WXMOTIF__
 267     // For some reason, we get a memcpy crash in wxLogStream::DoLogStream
 268     // on gcc/wxMotif, if we use wxLogTextCtl. Maybe it's just gcc?
 269     delete wxLog::SetActiveTarget(new wxLogStderr);
 270 #else
 271     // set our text control as the log target
 272     wxLogTextCtrl *logWindow = new wxLogTextCtrl(m_textCtrl);
 273     delete wxLog::SetActiveTarget(logWindow);
 274 #endif
 275 }
 276
 277 MyFrame::~MyFrame()
 278 {
 279     delete wxLog::SetActiveTarget(NULL);
 280 }
 281
 282 void MyFrame::CreateTreeWithDefStyle()
 283 {
 284     long style = wxTR_DEFAULT_STYLE |
 285 #ifndef NO_VARIABLE_HEIGHT
 286                  wxTR_HAS_VARIABLE_ROW_HEIGHT |
 287 #endif
 288                  wxTR_EDIT_LABELS;
 289
 290     CreateTree(style | wxSUNKEN_BORDER);
 291
 292     // as we don't know what wxTR_DEFAULT_STYLE could contain, test for
 293     // everything
 294     wxMenuBar *mbar = GetMenuBar();
 295     mbar->Check(TreeTest_TogButtons, (style & wxTR_HAS_BUTTONS) != 0);
 296     mbar->Check(TreeTest_TogButtons, (style & wxTR_TWIST_BUTTONS) != 0);
 297     mbar->Check(TreeTest_TogLines, (style & wxTR_NO_LINES) == 0);
 298     mbar->Check(TreeTest_TogRootLines, (style & wxTR_LINES_AT_ROOT) != 0);
 299     mbar->Check(TreeTest_TogHideRoot, (style & wxTR_HIDE_ROOT) != 0);
 300     mbar->Check(TreeTest_TogEdit, (style & wxTR_EDIT_LABELS) != 0);
 301     mbar->Check(TreeTest_TogBorder, (style & wxTR_ROW_LINES) != 0);
 302     mbar->Check(TreeTest_TogFullHighlight, (style & wxTR_FULL_ROW_HIGHLIGHT) != 0);
 303 }
 304
 305 void MyFrame::CreateTree(long style)
 306 {
 307     m_treeCtrl = new MyTreeCtrl(this, TreeTest_Ctrl,
 308                                 wxDefaultPosition, wxDefaultSize,
 309                                 style);
 310     Resize();
 311 }
 312
 313 void MyFrame::TogStyle(int id, long flag)
 314 {
 315     long style = m_treeCtrl->GetWindowStyle() ^ flag;
 316
 317     // most treectrl styles can't be changed on the fly using the native
 318     // control and the tree must be recreated
 319 #ifndef __WXMSW__
 320     m_treeCtrl->SetWindowStyle(style);
 321 #else // MSW
 322     delete m_treeCtrl;
 323     CreateTree(style);
 324 #endif // !MSW/MSW
 325
 326     GetMenuBar()->Check(id, (style & flag) != 0);
 327 }
 328
 329 void MyFrame::OnIdle(wxIdleEvent& event)
 330 {
 331 #if wxUSE_STATUSBAR
 332     if ( m_treeCtrl )
 333     {
 334         wxTreeItemId idRoot = m_treeCtrl->GetRootItem();
 335
 336         SetStatusText(wxString::Format
 337                       (
 338                         _T("Root/last item is %svisible/%svisible"),
 339                         m_treeCtrl->IsVisible(idRoot) ? _T("") : _T("not "),
 340                         m_treeCtrl->IsVisible(m_treeCtrl->GetLastChild(idRoot))
 341                             ? _T("") : _T("not ")
 342                       ), 1);
 343     }
 344 #endif // wxUSE_STATUSBAR
 345
 346     event.Skip();
 347 }
 348
 349 void MyFrame::OnSize(wxSizeEvent& event)
 350 {
 351     if ( m_treeCtrl && m_textCtrl )
 352     {
 353         Resize();
 354     }
 355
 356     event.Skip();
 357 }
 358
 359 void MyFrame::Resize()
 360 {
 361     wxSize size = GetClientSize();
 362     m_treeCtrl->SetSize(0, 0, size.x, 2*size.y/3);
 363     m_textCtrl->SetSize(0, 2*size.y/3, size.x, size.y/3);
 364 }
 365
 366 void MyFrame::OnQuit(wxCommandEvent& WXUNUSED(event))
 367 {
 368     Close(TRUE);
 369 }
 370
 371 void MyFrame::OnAbout(wxCommandEvent& WXUNUSED(event))
 372 {
 373     wxMessageBox(wxT("Tree test sample\n")
 374                  wxT("(c) Julian Smart 1997, Vadim Zeitlin 1998"),
 375                  wxT("About tree test"),
 376                  wxOK | wxICON_INFORMATION, this);
 377 }
 378
 379 void MyFrame::OnRename(wxCommandEvent& WXUNUSED(event))
 380 {
 381     wxTreeItemId item = m_treeCtrl->GetSelection();
 382
 383     CHECK_ITEM( item );
 384
 385     // old code - now we edit in place
 386 #if 0
 387     static wxString s_text;
 388     s_text = wxGetTextFromUser(wxT("New name: "), wxT("Tree sample question"),
 389             s_text, this);
 390     if ( !s_text.IsEmpty() )
 391     {
 392         m_treeCtrl->SetItemText(item, s_text);
 393     }
 394 #endif // 0
 395
 396     // TODO demonstrate creating a custom edit control...
 397     (void)m_treeCtrl->EditLabel(item);
 398 }
 399
 400 void MyFrame::OnCount(wxCommandEvent& WXUNUSED(event))
 401 {
 402     wxTreeItemId item = m_treeCtrl->GetSelection();
 403
 404     CHECK_ITEM( item );
 405
 406     int i = m_treeCtrl->GetChildrenCount( item, FALSE );
 407
 408     wxLogMessage(wxT("%d children"), i);
 409 }
 410
 411 void MyFrame::OnCountRec(wxCommandEvent& WXUNUSED(event))
 412 {
 413     wxTreeItemId item = m_treeCtrl->GetSelection();
 414
 415     CHECK_ITEM( item );
 416
 417     int i = m_treeCtrl->GetChildrenCount( item );
 418
 419     wxLogMessage(wxT("%d children"), i);
 420 }
 421
 422 void MyFrame::DoSort(bool reverse)
 423 {
 424     wxTreeItemId item = m_treeCtrl->GetSelection();
 425
 426     CHECK_ITEM( item );
 427
 428     m_treeCtrl->DoSortChildren(item, reverse);
 429 }
 430
 431 void MyFrame::OnDump(wxCommandEvent& WXUNUSED(event))
 432 {
 433     wxTreeItemId root = m_treeCtrl->GetSelection();
 434
 435     CHECK_ITEM( root );
 436
 437     m_treeCtrl->GetItemsRecursively(root);
 438 }
 439
 440 #ifndef NO_MULTIPLE_SELECTION
 441
 442 void MyFrame::OnToggleSel(wxCommandEvent& event)
 443 {
 444     TogStyle(event.GetId(), wxTR_MULTIPLE);
 445 }
 446
 447 void MyFrame::OnDumpSelected(wxCommandEvent& WXUNUSED(event))
 448 {
 449     wxArrayTreeItemIds array;
 450
 451     size_t count = m_treeCtrl->GetSelections(array);
 452     wxLogMessage(wxT("%u items selected"), count);
 453
 454     for ( size_t n = 0; n < count; n++ )
 455     {
 456         wxLogMessage(wxT("\t%s"), m_treeCtrl->GetItemText(array.Item(n)).c_str());
 457     }
 458 }
 459
 460 void MyFrame::OnSelect(wxCommandEvent& WXUNUSED(event))
 461 {
 462     m_treeCtrl->SelectItem(m_treeCtrl->GetSelection());
 463 }
 464
 465 void MyFrame::OnUnselect(wxCommandEvent& WXUNUSED(event))
 466 {
 467     m_treeCtrl->UnselectAll();
 468 }
 469
 470 #endif // NO_MULTIPLE_SELECTION
 471
 472 void MyFrame::DoSetBold(bool bold)
 473 {
 474     wxTreeItemId item = m_treeCtrl->GetSelection();
 475
 476     CHECK_ITEM( item );
 477
 478     m_treeCtrl->SetItemBold(item, bold);
 479 }
 480
 481 void MyFrame::OnDelete(wxCommandEvent& WXUNUSED(event))
 482 {
 483     wxTreeItemId item = m_treeCtrl->GetSelection();
 484
 485     CHECK_ITEM( item );
 486
 487     m_treeCtrl->Delete(item);
 488 }
 489
 490 void MyFrame::OnDeleteChildren(wxCommandEvent& WXUNUSED(event))
 491 {
 492     wxTreeItemId item = m_treeCtrl->GetSelection();
 493
 494     CHECK_ITEM( item );
 495
 496     m_treeCtrl->DeleteChildren(item);
 497 }
 498
 499 void MyFrame::OnDeleteAll(wxCommandEvent& WXUNUSED(event))
 500 {
 501     m_treeCtrl->DeleteAllItems();
 502 }
 503
 504 void MyFrame::OnRecreate(wxCommandEvent& event)
 505 {
 506     OnDeleteAll(event);
 507     m_treeCtrl->AddTestItemsToTree(5, 2);
 508 }
 509
 510 void MyFrame::OnSetImageSize(wxCommandEvent& WXUNUSED(event))
 511 {
 512     int size = wxGetNumberFromUser(wxT("Enter the size for the images to use"),
 513                                     wxT("Size: "),
 514                                     wxT("TreeCtrl sample"),
 515                                     m_treeCtrl->ImageSize());
 516     if ( size == -1 )
 517         return;
 518
 519     m_treeCtrl->CreateImageList(size);
 520     wxGetApp().SetShowImages(TRUE);
 521 }
 522
 523 void MyFrame::OnToggleImages(wxCommandEvent& WXUNUSED(event))
 524 {
 525     if ( wxGetApp().ShowImages() )
 526     {
 527         m_treeCtrl->CreateImageList(-1);
 528         wxGetApp().SetShowImages(FALSE);
 529     }
 530     else
 531     {
 532         m_treeCtrl->CreateImageList(0);
 533         wxGetApp().SetShowImages(TRUE);
 534     }
 535 }
 536
 537 void MyFrame::OnToggleButtons(wxCommandEvent& WXUNUSED(event))
 538 {
 539 #if USE_GENERIC_TREECTRL || !defined(__WXMSW__)
 540     if ( wxGetApp().ShowButtons() )
 541     {
 542         m_treeCtrl->CreateButtonsImageList(-1);
 543         wxGetApp().SetShowButtons(FALSE);
 544     }
 545     else
 546     {
 547         m_treeCtrl->CreateButtonsImageList(15);
 548         wxGetApp().SetShowButtons(TRUE);
 549     }
 550 #endif
 551 }
 552
 553 void MyFrame::OnCollapseAndReset(wxCommandEvent& WXUNUSED(event))
 554 {
 555     m_treeCtrl->CollapseAndReset(m_treeCtrl->GetRootItem());
 556 }
 557
 558 void MyFrame::OnEnsureVisible(wxCommandEvent& WXUNUSED(event))
 559 {
 560     m_treeCtrl->DoEnsureVisible();
 561 }
 562
 563 void MyFrame::OnInsertItem(wxCommandEvent& WXUNUSED(event))
 564 {
 565     int image = wxGetApp().ShowImages() ? MyTreeCtrl::TreeCtrlIcon_File : -1;
 566     m_treeCtrl->InsertItem(m_treeCtrl->GetRootItem(), image, wxT("2nd item"));
 567 }
 568
 569 void MyFrame::OnAddItem(wxCommandEvent& WXUNUSED(event))
 570 {
 571     static int s_num = 0;
 572
 573     wxString text;
 574     text.Printf(wxT("Item #%d"), ++s_num);
 575
 576     m_treeCtrl->AppendItem(m_treeCtrl->GetRootItem(),
 577                            text /*,
 578                            MyTreeCtrl::TreeCtrlIcon_File */ );
 579 }
 580
 581 void MyFrame::OnIncIndent(wxCommandEvent& WXUNUSED(event))
 582 {
 583     unsigned int indent = m_treeCtrl->GetIndent();
 584     if (indent < 100)
 585         m_treeCtrl->SetIndent( indent+5 );
 586 }
 587
 588 void MyFrame::OnDecIndent(wxCommandEvent& WXUNUSED(event))
 589 {
 590     unsigned int indent = m_treeCtrl->GetIndent();
 591     if (indent > 10)
 592         m_treeCtrl->SetIndent( indent-5 );
 593 }
 594
 595 void MyFrame::OnIncSpacing(wxCommandEvent& WXUNUSED(event))
 596 {
 597     unsigned int indent = m_treeCtrl->GetSpacing();
 598     if (indent < 100)
 599         m_treeCtrl->SetSpacing( indent+5 );
 600 }
 601
 602 void MyFrame::OnDecSpacing(wxCommandEvent& WXUNUSED(event))
 603 {
 604     unsigned int indent = m_treeCtrl->GetSpacing();
 605     if (indent > 10)
 606         m_treeCtrl->SetSpacing( indent-5 );
 607 }
 608
 609 void MyFrame::OnToggleIcon(wxCommandEvent& WXUNUSED(event))
 610 {
 611     wxTreeItemId item = m_treeCtrl->GetSelection();
 612
 613     CHECK_ITEM( item );
 614
 615     m_treeCtrl->DoToggleIcon(item);
 616 }
 617
 618 void MyFrame::OnSetFgColour(wxCommandEvent& WXUNUSED(event))
 619 {
 620     wxColour col = wxGetColourFromUser(this, m_treeCtrl->GetForegroundColour());
 621     if ( col.Ok() )
 622         m_treeCtrl->SetForegroundColour(col);
 623 }
 624
 625 void MyFrame::OnSetBgColour(wxCommandEvent& WXUNUSED(event))
 626 {
 627     wxColour col = wxGetColourFromUser(this, m_treeCtrl->GetBackgroundColour());
 628     if ( col.Ok() )
 629         m_treeCtrl->SetBackgroundColour(col);
 630 }
 631
 632 // MyTreeCtrl implementation
 633 #if USE_GENERIC_TREECTRL
 634 IMPLEMENT_DYNAMIC_CLASS(MyTreeCtrl, wxGenericTreeCtrl)
 635 #else
 636 IMPLEMENT_DYNAMIC_CLASS(MyTreeCtrl, wxTreeCtrl)
 637 #endif
 638
 639 MyTreeCtrl::MyTreeCtrl(wxWindow *parent, const wxWindowID id,
 640                        const wxPoint& pos, const wxSize& size,
 641                        long style)
 642           : wxTreeCtrl(parent, id, pos, size, style)
 643 {
 644     m_reverseSort = FALSE;
 645
 646     CreateImageList();
 647
 648     // Add some items to the tree
 649     AddTestItemsToTree(5, 2);
 650 }
 651
 652 void MyTreeCtrl::CreateImageList(int size)
 653 {
 654     if ( size == -1 )
 655     {
 656         SetImageList(NULL);
 657         return;
 658     }
 659     if ( size == 0 )
 660         size = m_imageSize;
 661     else
 662         m_imageSize = size;
 663
 664     // Make an image list containing small icons
 665     wxImageList *images = new wxImageList(size, size, TRUE);
 666
 667     // should correspond to TreeCtrlIcon_xxx enum
 668     wxBusyCursor wait;
 669     wxIcon icons[5];
 670     icons[0] = wxIcon(icon1_xpm);
 671     icons[1] = wxIcon(icon2_xpm);
 672     icons[2] = wxIcon(icon3_xpm);
 673     icons[3] = wxIcon(icon4_xpm);
 674     icons[4] = wxIcon(icon5_xpm);
 675
 676     int sizeOrig = icons[0].GetWidth();
 677     for ( size_t i = 0; i < WXSIZEOF(icons); i++ )
 678     {
 679         if ( size == sizeOrig )
 680         {
 681             images->Add(icons[i]);
 682         }
 683         else
 684         {
 685             images->Add(wxBitmap(wxBitmap(icons[i]).ConvertToImage().Rescale(size, size)));
 686         }
 687     }
 688
 689     AssignImageList(images);
 690 }
 691
 692 #if USE_GENERIC_TREECTRL || !defined(__WXMSW__)
 693 void MyTreeCtrl::CreateButtonsImageList(int size)
 694 {
 695     if ( size == -1 )
 696     {
 697         SetButtonsImageList(NULL);
 698         return;
 699     }
 700
 701     // Make an image list containing small icons
 702     wxImageList *images = new wxImageList(size, size, TRUE);
 703
 704     // should correspond to TreeCtrlIcon_xxx enum
 705     wxBusyCursor wait;
 706     wxIcon icons[4];
 707     icons[0] = wxIcon(icon3_xpm);   // closed
 708     icons[1] = wxIcon(icon3_xpm);   // closed, selected
 709     icons[2] = wxIcon(icon5_xpm);   // open
 710     icons[3] = wxIcon(icon5_xpm);   // open, selected
 711
 712     for ( size_t i = 0; i < WXSIZEOF(icons); i++ )
 713     {
 714         int sizeOrig = icons[i].GetWidth();
 715         if ( size == sizeOrig )
 716         {
 717             images->Add(icons[i]);
 718         }
 719         else
 720         {
 721             images->Add(wxBitmap(wxBitmap(icons[i]).ConvertToImage().Rescale(size, size)));
 722         }
 723     }
 724
 725     AssignButtonsImageList(images);
 726 #else
 727 void MyTreeCtrl::CreateButtonsImageList(int WXUNUSED(size))
 728 {
 729 #endif
 730 }
 731
 732 MyTreeCtrl::~MyTreeCtrl()
 733 {
 734 }
 735
 736 int MyTreeCtrl::OnCompareItems(const wxTreeItemId& item1,
 737                                const wxTreeItemId& item2)
 738 {
 739     if ( m_reverseSort )
 740     {
 741         // just exchange 1st and 2nd items
 742         return wxTreeCtrl::OnCompareItems(item2, item1);
 743     }
 744     else
 745     {
 746         return wxTreeCtrl::OnCompareItems(item1, item2);
 747     }
 748 }
 749
 750 void MyTreeCtrl::AddItemsRecursively(const wxTreeItemId& idParent,
 751                                      size_t numChildren,
 752                                      size_t depth,
 753                                      size_t folder)
 754 {
 755     if ( depth > 0 )
 756     {
 757         bool hasChildren = depth > 1;
 758
 759         wxString str;
 760         for ( size_t n = 0; n < numChildren; n++ )
 761         {
 762             // at depth 1 elements won't have any more children
 763             if ( hasChildren )
 764                 str.Printf(wxT("%s child %d"), wxT("Folder"), n + 1);
 765             else
 766                 str.Printf(wxT("%s child %d.%d"), wxT("File"), folder, n + 1);
 767
 768             // here we pass to AppendItem() normal and selected item images (we
 769             // suppose that selected image follows the normal one in the enum)
 770             int image, imageSel;
 771             if ( wxGetApp().ShowImages() )
 772             {
 773                 image = depth == 1 ? TreeCtrlIcon_File : TreeCtrlIcon_Folder;
 774                 imageSel = image + 1;
 775             }
 776             else
 777             {
 778                 image = imageSel = -1;
 779             }
 780             wxTreeItemId id = AppendItem(idParent, str, image, imageSel,
 781                                          new MyTreeItemData(str));
 782
 783             // and now we also set the expanded one (only for the folders)
 784             if ( hasChildren && wxGetApp().ShowImages() )
 785             {
 786                 SetItemImage(id, TreeCtrlIcon_FolderOpened,
 787                              wxTreeItemIcon_Expanded);
 788             }
 789
 790             // remember the last child for OnEnsureVisible()
 791             if ( !hasChildren && n == numChildren - 1 )
 792             {
 793                 m_lastItem = id;
 794             }
 795
 796             AddItemsRecursively(id, numChildren, depth - 1, n + 1);
 797         }
 798     }
 799     //else: done!
 800 }
 801
 802 void MyTreeCtrl::AddTestItemsToTree(size_t numChildren,
 803                                     size_t depth)
 804 {
 805     int image = wxGetApp().ShowImages() ? MyTreeCtrl::TreeCtrlIcon_Folder : -1;
 806     wxTreeItemId rootId = AddRoot(wxT("Root"),
 807                                   image, image,
 808                                   new MyTreeItemData(wxT("Root item")));
 809     if ( image != -1 )
 810     {
 811         SetItemImage(rootId, TreeCtrlIcon_FolderOpened, wxTreeItemIcon_Expanded);
 812     }
 813
 814     AddItemsRecursively(rootId, numChildren, depth, 0);
 815
 816     // set some colours/fonts for testing
 817     SetItemFont(rootId, *wxITALIC_FONT);
 818
 819     wxTreeItemIdValue cookie;
 820     wxTreeItemId id = GetFirstChild(rootId, cookie);
 821     SetItemTextColour(id, *wxBLUE);
 822
 823     id = GetNextChild(rootId, cookie);
 824     id = GetNextChild(rootId, cookie);
 825     SetItemTextColour(id, *wxRED);
 826     SetItemBackgroundColour(id, *wxLIGHT_GREY);
 827 }
 828
 829 void MyTreeCtrl::GetItemsRecursively(const wxTreeItemId& idParent,
 830                                      wxTreeItemIdValue cookie)
 831 {
 832     wxTreeItemId id;
 833
 834     if ( !cookie )
 835         id = GetFirstChild(idParent, cookie);
 836     else
 837         id = GetNextChild(idParent, cookie);
 838
 839     if ( !id.IsOk() )
 840         return;
 841
 842     wxString text = GetItemText(id);
 843     wxLogMessage(text);
 844
 845     if (ItemHasChildren(id))
 846         GetItemsRecursively(id);
 847
 848     GetItemsRecursively(idParent, cookie);
 849 }
 850
 851 void MyTreeCtrl::DoToggleIcon(const wxTreeItemId& item)
 852 {
 853     int image = GetItemImage(item) == TreeCtrlIcon_Folder ? TreeCtrlIcon_File
 854                                                           : TreeCtrlIcon_Folder;
 855
 856     SetItemImage(item, image);
 857 }
 858
 859
 860 // avoid repetition
 861 #define TREE_EVENT_HANDLER(name)                                 \
 862 void MyTreeCtrl::name(wxTreeEvent& event)                        \
 863 {                                                                \
 864     wxLogMessage(wxT(#name));                                    \
 865     SetLastItem(wxTreeItemId());                                 \
 866     event.Skip();                                                \
 867 }
 868
 869 TREE_EVENT_HANDLER(OnBeginRDrag)
 870 TREE_EVENT_HANDLER(OnDeleteItem)
 871 TREE_EVENT_HANDLER(OnGetInfo)
 872 TREE_EVENT_HANDLER(OnSetInfo)
 873 TREE_EVENT_HANDLER(OnItemExpanded)
 874 TREE_EVENT_HANDLER(OnItemExpanding)
 875 TREE_EVENT_HANDLER(OnItemCollapsed)
 876 TREE_EVENT_HANDLER(OnSelChanged)
 877 TREE_EVENT_HANDLER(OnSelChanging)
 878
 879 #undef TREE_EVENT_HANDLER
 880
 881 void LogKeyEvent(const wxChar *name, const wxKeyEvent& event)
 882 {
 883     wxString key;
 884     long keycode = event.GetKeyCode();
 885     {
 886         switch ( keycode )
 887         {
 888             case WXK_BACK: key = wxT("BACK"); break;
 889             case WXK_TAB: key = wxT("TAB"); break;
 890             case WXK_RETURN: key = wxT("RETURN"); break;
 891             case WXK_ESCAPE: key = wxT("ESCAPE"); break;
 892             case WXK_SPACE: key = wxT("SPACE"); break;
 893             case WXK_DELETE: key = wxT("DELETE"); break;
 894             case WXK_START: key = wxT("START"); break;
 895             case WXK_LBUTTON: key = wxT("LBUTTON"); break;
 896             case WXK_RBUTTON: key = wxT("RBUTTON"); break;
 897             case WXK_CANCEL: key = wxT("CANCEL"); break;
 898             case WXK_MBUTTON: key = wxT("MBUTTON"); break;
 899             case WXK_CLEAR: key = wxT("CLEAR"); break;
 900             case WXK_SHIFT: key = wxT("SHIFT"); break;
 901             case WXK_ALT: key = wxT("ALT"); break;
 902             case WXK_CONTROL: key = wxT("CONTROL"); break;
 903             case WXK_MENU: key = wxT("MENU"); break;
 904             case WXK_PAUSE: key = wxT("PAUSE"); break;
 905             case WXK_CAPITAL: key = wxT("CAPITAL"); break;
 906             case WXK_PRIOR: key = wxT("PRIOR"); break;
 907             case WXK_NEXT: key = wxT("NEXT"); break;
 908             case WXK_END: key = wxT("END"); break;
 909             case WXK_HOME: key = wxT("HOME"); break;
 910             case WXK_LEFT: key = wxT("LEFT"); break;
 911             case WXK_UP: key = wxT("UP"); break;
 912             case WXK_RIGHT: key = wxT("RIGHT"); break;
 913             case WXK_DOWN: key = wxT("DOWN"); break;
 914             case WXK_SELECT: key = wxT("SELECT"); break;
 915             case WXK_PRINT: key = wxT("PRINT"); break;
 916             case WXK_EXECUTE: key = wxT("EXECUTE"); break;
 917             case WXK_SNAPSHOT: key = wxT("SNAPSHOT"); break;
 918             case WXK_INSERT: key = wxT("INSERT"); break;
 919             case WXK_HELP: key = wxT("HELP"); break;
 920             case WXK_NUMPAD0: key = wxT("NUMPAD0"); break;
 921             case WXK_NUMPAD1: key = wxT("NUMPAD1"); break;
 922             case WXK_NUMPAD2: key = wxT("NUMPAD2"); break;
 923             case WXK_NUMPAD3: key = wxT("NUMPAD3"); break;
 924             case WXK_NUMPAD4: key = wxT("NUMPAD4"); break;
 925             case WXK_NUMPAD5: key = wxT("NUMPAD5"); break;
 926             case WXK_NUMPAD6: key = wxT("NUMPAD6"); break;
 927             case WXK_NUMPAD7: key = wxT("NUMPAD7"); break;
 928             case WXK_NUMPAD8: key = wxT("NUMPAD8"); break;
 929             case WXK_NUMPAD9: key = wxT("NUMPAD9"); break;
 930             case WXK_MULTIPLY: key = wxT("MULTIPLY"); break;
 931             case WXK_ADD: key = wxT("ADD"); break;
 932             case WXK_SEPARATOR: key = wxT("SEPARATOR"); break;
 933             case WXK_SUBTRACT: key = wxT("SUBTRACT"); break;
 934             case WXK_DECIMAL: key = wxT("DECIMAL"); break;
 935             case WXK_DIVIDE: key = wxT("DIVIDE"); break;
 936             case WXK_F1: key = wxT("F1"); break;
 937             case WXK_F2: key = wxT("F2"); break;
 938             case WXK_F3: key = wxT("F3"); break;
 939             case WXK_F4: key = wxT("F4"); break;
 940             case WXK_F5: key = wxT("F5"); break;
 941             case WXK_F6: key = wxT("F6"); break;
 942             case WXK_F7: key = wxT("F7"); break;
 943             case WXK_F8: key = wxT("F8"); break;
 944             case WXK_F9: key = wxT("F9"); break;
 945             case WXK_F10: key = wxT("F10"); break;
 946             case WXK_F11: key = wxT("F11"); break;
 947             case WXK_F12: key = wxT("F12"); break;
 948             case WXK_F13: key = wxT("F13"); break;
 949             case WXK_F14: key = wxT("F14"); break;
 950             case WXK_F15: key = wxT("F15"); break;
 951             case WXK_F16: key = wxT("F16"); break;
 952             case WXK_F17: key = wxT("F17"); break;
 953             case WXK_F18: key = wxT("F18"); break;
 954             case WXK_F19: key = wxT("F19"); break;
 955             case WXK_F20: key = wxT("F20"); break;
 956             case WXK_F21: key = wxT("F21"); break;
 957             case WXK_F22: key = wxT("F22"); break;
 958             case WXK_F23: key = wxT("F23"); break;
 959             case WXK_F24: key = wxT("F24"); break;
 960             case WXK_NUMLOCK: key = wxT("NUMLOCK"); break;
 961             case WXK_SCROLL: key = wxT("SCROLL"); break;
 962             case WXK_PAGEUP: key = wxT("PAGEUP"); break;
 963             case WXK_PAGEDOWN: key = wxT("PAGEDOWN"); break;
 964             case WXK_NUMPAD_SPACE: key = wxT("NUMPAD_SPACE"); break;
 965             case WXK_NUMPAD_TAB: key = wxT("NUMPAD_TAB"); break;
 966             case WXK_NUMPAD_ENTER: key = wxT("NUMPAD_ENTER"); break;
 967             case WXK_NUMPAD_F1: key = wxT("NUMPAD_F1"); break;
 968             case WXK_NUMPAD_F2: key = wxT("NUMPAD_F2"); break;
 969             case WXK_NUMPAD_F3: key = wxT("NUMPAD_F3"); break;
 970             case WXK_NUMPAD_F4: key = wxT("NUMPAD_F4"); break;
 971             case WXK_NUMPAD_HOME: key = wxT("NUMPAD_HOME"); break;
 972             case WXK_NUMPAD_LEFT: key = wxT("NUMPAD_LEFT"); break;
 973             case WXK_NUMPAD_UP: key = wxT("NUMPAD_UP"); break;
 974             case WXK_NUMPAD_RIGHT: key = wxT("NUMPAD_RIGHT"); break;
 975             case WXK_NUMPAD_DOWN: key = wxT("NUMPAD_DOWN"); break;
 976             case WXK_NUMPAD_PRIOR: key = wxT("NUMPAD_PRIOR"); break;
 977             case WXK_NUMPAD_PAGEUP: key = wxT("NUMPAD_PAGEUP"); break;
 978             case WXK_NUMPAD_PAGEDOWN: key = wxT("NUMPAD_PAGEDOWN"); break;
 979             case WXK_NUMPAD_END: key = wxT("NUMPAD_END"); break;
 980             case WXK_NUMPAD_BEGIN: key = wxT("NUMPAD_BEGIN"); break;
 981             case WXK_NUMPAD_INSERT: key = wxT("NUMPAD_INSERT"); break;
 982             case WXK_NUMPAD_DELETE: key = wxT("NUMPAD_DELETE"); break;
 983             case WXK_NUMPAD_EQUAL: key = wxT("NUMPAD_EQUAL"); break;
 984             case WXK_NUMPAD_MULTIPLY: key = wxT("NUMPAD_MULTIPLY"); break;
 985             case WXK_NUMPAD_ADD: key = wxT("NUMPAD_ADD"); break;
 986             case WXK_NUMPAD_SEPARATOR: key = wxT("NUMPAD_SEPARATOR"); break;
 987             case WXK_NUMPAD_SUBTRACT: key = wxT("NUMPAD_SUBTRACT"); break;
 988             case WXK_NUMPAD_DECIMAL: key = wxT("NUMPAD_DECIMAL"); break;
 989
 990             default:
 991             {
 992                if ( wxIsprint((int)keycode) )
 993                    key.Printf(wxT("'%c'"), (char)keycode);
 994                else if ( keycode > 0 && keycode < 27 )
 995                    key.Printf(_("Ctrl-%c"), wxT('A') + keycode - 1);
 996                else
 997                    key.Printf(wxT("unknown (%ld)"), keycode);
 998             }
 999         }
1000     }
1001
1002     wxLogMessage( wxT("%s event: %s (flags = %c%c%c%c)"),
1003                   name,
1004                   key.c_str(),
1005                   event.ControlDown() ? wxT('C') : wxT('-'),
1006                   event.AltDown() ? wxT('A') : wxT('-'),
1007                   event.ShiftDown() ? wxT('S') : wxT('-'),
1008                   event.MetaDown() ? wxT('M') : wxT('-'));
1009 }
1010
1011 void MyTreeCtrl::OnTreeKeyDown(wxTreeEvent& event)
1012 {
1013     LogKeyEvent(wxT("Tree key down "), event.GetKeyEvent());
1014
1015     event.Skip();
1016 }
1017
1018 void MyTreeCtrl::OnBeginDrag(wxTreeEvent& event)
1019 {
1020     // need to explicitly allow drag
1021     if ( event.GetItem() != GetRootItem() )
1022     {
1023         m_draggedItem = event.GetItem();
1024
1025         wxLogMessage(wxT("OnBeginDrag: started dragging %s"),
1026                      GetItemText(m_draggedItem).c_str());
1027
1028         event.Allow();
1029     }
1030     else
1031     {
1032         wxLogMessage(wxT("OnBeginDrag: this item can't be dragged."));
1033     }
1034 }
1035
1036 void MyTreeCtrl::OnEndDrag(wxTreeEvent& event)
1037 {
1038     wxTreeItemId itemSrc = m_draggedItem,
1039                  itemDst = event.GetItem();
1040     m_draggedItem = (wxTreeItemId)0l;
1041
1042     // where to copy the item?
1043     if ( itemDst.IsOk() && !ItemHasChildren(itemDst) )
1044     {
1045         // copy to the parent then
1046         itemDst = GetItemParent(itemDst);
1047     }
1048
1049     if ( !itemDst.IsOk() )
1050     {
1051         wxLogMessage(wxT("OnEndDrag: can't drop here."));
1052
1053         return;
1054     }
1055
1056     wxString text = GetItemText(itemSrc);
1057     wxLogMessage(wxT("OnEndDrag: '%s' copied to '%s'."),
1058                  text.c_str(), GetItemText(itemDst).c_str());
1059
1060     // just do append here - we could also insert it just before/after the item
1061     // on which it was dropped, but this requires slightly more work... we also
1062     // completely ignore the client data and icon of the old item but could
1063     // copy them as well.
1064     //
1065     // Finally, we only copy one item here but we might copy the entire tree if
1066     // we were dragging a folder.
1067     int image = wxGetApp().ShowImages() ? TreeCtrlIcon_File : -1;
1068     AppendItem(itemDst, text, image);
1069 }
1070
1071 void MyTreeCtrl::OnBeginLabelEdit(wxTreeEvent& event)
1072 {
1073     wxLogMessage(wxT("OnBeginLabelEdit"));
1074
1075     // for testing, prevent this item's label editing
1076     wxTreeItemId itemId = event.GetItem();
1077     if ( IsTestItem(itemId) )
1078     {
1079         wxMessageBox(wxT("You can't edit this item."));
1080
1081         event.Veto();
1082     }
1083 }
1084
1085 void MyTreeCtrl::OnEndLabelEdit(wxTreeEvent& event)
1086 {
1087     wxLogMessage(wxT("OnEndLabelEdit"));
1088
1089     // don't allow anything except letters in the labels
1090     if ( !event.GetLabel().IsWord() )
1091     {
1092         wxMessageBox(wxT("The new label should be a single word."));
1093
1094         event.Veto();
1095     }
1096 }
1097
1098 void MyTreeCtrl::OnItemCollapsing(wxTreeEvent& event)
1099 {
1100     wxLogMessage(wxT("OnItemCollapsing"));
1101
1102     // for testing, prevent the user from collapsing the first child folder
1103     wxTreeItemId itemId = event.GetItem();
1104     if ( IsTestItem(itemId) )
1105     {
1106         wxMessageBox(wxT("You can't collapse this item."));
1107
1108         event.Veto();
1109     }
1110 }
1111
1112 void MyTreeCtrl::OnItemActivated(wxTreeEvent& event)
1113 {
1114     // show some info about this item
1115     wxTreeItemId itemId = event.GetItem();
1116     MyTreeItemData *item = (MyTreeItemData *)GetItemData(itemId);
1117
1118     if ( item != NULL )
1119     {
1120         item->ShowInfo(this);
1121     }
1122
1123     wxLogMessage(wxT("OnItemActivated"));
1124 }
1125
1126 void MyTreeCtrl::OnItemRightClick(wxTreeEvent& event)
1127 {
1128     ShowMenu(event.GetItem(), event.GetPoint());
1129 }
1130
1131 void MyTreeCtrl::OnContextMenu(wxContextMenuEvent& event)
1132 {
1133     wxPoint pt = event.GetPosition();
1134     wxTreeItemId item = GetSelection();
1135     wxLogMessage(wxT("OnContextMenu at screen coords (%i, %i)"), pt.x, pt.y);
1136
1137     //check if event was generated by keyboard (MSW-specific?)
1138     if (pt.x==-1 && pt.y==-1) //(this is how MSW indicates it)
1139     {
1140         //attempt to guess where to show the menu
1141         if (item.IsOk())
1142         {
1143             //if an item was clicked, show menu to the right of it
1144             wxRect rect;
1145             GetBoundingRect(item, rect, true); //true = only the label
1146             pt = wxPoint(rect.GetRight(), rect.GetTop());
1147         }
1148         else
1149         {
1150             pt = wxPoint(0, 0);
1151         }
1152     }
1153     else
1154     {
1155         //event was generated by mouse, use supplied coords
1156         pt = ScreenToClient(pt);
1157     }
1158
1159     ShowMenu(item, pt);
1160 }
1161
1162 void MyTreeCtrl::ShowMenu(wxTreeItemId id, const wxPoint& pt)
1163 {
1164     wxString title;
1165     if ( id.IsOk() )
1166     {
1167         title << wxT("Menu for ") << GetItemText(id);
1168     }
1169     else
1170     {
1171         title = wxT("Menu for no particular item");
1172     }
1173
1174 #if wxUSE_MENUS
1175     wxMenu menu(title);
1176     menu.Append(TreeTest_About, wxT("&About..."));
1177     menu.Append(TreeTest_Dump, wxT("&Dump"));
1178
1179     PopupMenu(&menu, pt);
1180 #endif // wxUSE_MENUS
1181 }
1182
1183 void MyTreeCtrl::OnRMouseDClick(wxMouseEvent& event)
1184 {
1185     wxTreeItemId id = HitTest(event.GetPosition());
1186     if ( !id )
1187         wxLogMessage(wxT("No item under mouse"));
1188     else
1189     {
1190         MyTreeItemData *item = (MyTreeItemData *)GetItemData(id);
1191         if ( item )
1192             wxLogMessage(wxT("Item '%s' under mouse"), item->GetDesc());
1193     }
1194 }
1195
1196 static inline const wxChar *Bool2String(bool b)
1197 {
1198     return b ? wxT("") : wxT("not ");
1199 }
1200
1201 void MyTreeItemData::ShowInfo(wxTreeCtrl *tree)
1202 {
1203     wxLogMessage(wxT("Item '%s': %sselected, %sexpanded, %sbold,\n")
1204                  wxT("%u children (%u immediately under this item)."),
1205                  m_desc.c_str(),
1206                  Bool2String(tree->IsSelected(GetId())),
1207                  Bool2String(tree->IsExpanded(GetId())),
1208                  Bool2String(tree->IsBold(GetId())),
1209                  tree->GetChildrenCount(GetId()),
1210                  tree->GetChildrenCount(GetId(), FALSE));
1211 }