src/generic/logg.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        logg.cpp
   3 // Purpose:     wxLog-derived classes which need GUI support (the rest is in
   4 //              src/common/log.cpp)
   5 // Author:      Vadim Zeitlin
   6 // Modified by:
   7 // Created:     20.09.99 (extracted from src/common/log.cpp)
   8 // RCS-ID:      $Id$
   9 // Copyright:   (c) 1998 Vadim Zeitlin <zeitlin@dptmaths.ens-cachan.fr>
  10 // Licence:     wxWindows license
  11 /////////////////////////////////////////////////////////////////////////////
  12
  13 // ============================================================================
  14 // declarations
  15 // ============================================================================
  16
  17 // ----------------------------------------------------------------------------
  18 // headers
  19 // ----------------------------------------------------------------------------
  20
  21 // no #pragma implementation "log.h" because it's already in src/common/log.cpp
  22
  23 // For compilers that support precompilation, includes "wx.h".
  24 #include "wx/wxprec.h"
  25
  26 #ifdef __BORLANDC__
  27   #pragma hdrstop
  28 #endif
  29
  30 #if !wxUSE_GUI
  31     #error "This file can't be compiled without GUI!"
  32 #endif
  33
  34 #ifndef WX_PRECOMP
  35     #include "wx/app.h"
  36     #include "wx/intl.h"
  37     #include "wx/log.h"
  38     #include "wx/menu.h"
  39     #include "wx/frame.h"
  40     #include "wx/filedlg.h"
  41     #include "wx/msgdlg.h"
  42     #include "wx/textctrl.h"
  43     #include "wx/sizer.h"
  44     #include "wx/statbmp.h"
  45 #endif // WX_PRECOMP
  46
  47 #include "wx/file.h"
  48 #include "wx/textfile.h"
  49
  50 #ifdef  __WXMSW__
  51   // for OutputDebugString()
  52   #include  "wx/msw/private.h"
  53 #endif // Windows
  54
  55 // may be defined to 0 for old behavior (using wxMessageBox) - shouldn't be
  56 // changed normally (that's why it's here and not in setup.h)
  57 #define wxUSE_LOG_DIALOG 1
  58
  59 #if wxUSE_LOG_DIALOG
  60     #include "wx/datetime.h"
  61     #include "wx/listctrl.h"
  62     #include "wx/image.h"
  63 #else // !wxUSE_TEXTFILE
  64     #include "wx/msgdlg.h"
  65 #endif // wxUSE_LOG_DIALOG/!wxUSE_LOG_DIALOG
  66
  67 // ----------------------------------------------------------------------------
  68 // private classes
  69 // ----------------------------------------------------------------------------
  70
  71 #if wxUSE_LOG_DIALOG
  72
  73 class wxLogDialog : public wxDialog
  74 {
  75 public:
  76     wxLogDialog(wxWindow *parent,
  77                 const wxArrayString& messages,
  78                 const wxArrayInt& severity,
  79                 const wxArrayLong& timess,
  80                 const wxString& caption,
  81                 long style);
  82     virtual ~wxLogDialog();
  83
  84     // event handlers
  85     void OnOk(wxCommandEvent& event);
  86     void OnDetails(wxCommandEvent& event);
  87     void OnListSelect(wxListEvent& event);
  88
  89 private:
  90     // the data for the listctrl
  91     wxArrayString m_messages;
  92     wxArrayInt m_severity;
  93     wxArrayLong m_times;
  94
  95     // the "toggle" button and its state
  96     wxButton *m_btnDetails;
  97     bool      m_showingDetails;
  98
  99     // the listctrl (not shown initially)
 100     wxListCtrl *m_listctrl;
 101
 102     DECLARE_EVENT_TABLE()
 103 };
 104
 105 BEGIN_EVENT_TABLE(wxLogDialog, wxDialog)
 106     EVT_BUTTON(wxID_OK,     wxLogDialog::OnOk)
 107     EVT_BUTTON(wxID_MORE,   wxLogDialog::OnDetails)
 108     EVT_LIST_ITEM_SELECTED(-1, wxLogDialog::OnListSelect)
 109 END_EVENT_TABLE()
 110
 111 #endif // wxUSE_LOG_DIALOG
 112
 113 // ----------------------------------------------------------------------------
 114 // global variables
 115 // ----------------------------------------------------------------------------
 116
 117 // we use a global variable to store the frame pointer for wxLogStatus - bad,
 118 // but it's he easiest way
 119 static wxFrame *gs_pFrame; // FIXME MT-unsafe
 120
 121 // ============================================================================
 122 // implementation
 123 // ============================================================================
 124
 125 // ----------------------------------------------------------------------------
 126 // global functions
 127 // ----------------------------------------------------------------------------
 128
 129 // accepts an additional argument which tells to which frame the output should
 130 // be directed
 131 void wxLogStatus(wxFrame *pFrame, const wxChar *szFormat, ...)
 132 {
 133   wxString msg;
 134
 135   wxLog *pLog = wxLog::GetActiveTarget();
 136   if ( pLog != NULL ) {
 137     va_list argptr;
 138     va_start(argptr, szFormat);
 139     msg.PrintfV(szFormat, argptr);
 140     va_end(argptr);
 141
 142     wxASSERT( gs_pFrame == NULL ); // should be reset!
 143     gs_pFrame = pFrame;
 144     wxLog::OnLog(wxLOG_Status, msg, time(NULL));
 145     gs_pFrame = (wxFrame *) NULL;
 146   }
 147 }
 148
 149 // ----------------------------------------------------------------------------
 150 // wxLogTextCtrl implementation
 151 // ----------------------------------------------------------------------------
 152
 153 wxLogTextCtrl::wxLogTextCtrl(wxTextCtrl *pTextCtrl)
 154 {
 155     m_pTextCtrl = pTextCtrl;
 156 }
 157
 158 void wxLogTextCtrl::DoLogString(const wxChar *szString, time_t WXUNUSED(t))
 159 {
 160     wxString msg;
 161     TimeStamp(&msg);
 162     msg << szString << wxT('\n');
 163
 164     m_pTextCtrl->AppendText(msg);
 165 }
 166
 167 // ----------------------------------------------------------------------------
 168 // wxLogGui implementation (FIXME MT-unsafe)
 169 // ----------------------------------------------------------------------------
 170
 171 wxLogGui::wxLogGui()
 172 {
 173     Clear();
 174 }
 175
 176 void wxLogGui::Clear()
 177 {
 178     m_bErrors = m_bWarnings = FALSE;
 179     m_aMessages.Empty();
 180     m_aSeverity.Empty();
 181     m_aTimes.Empty();
 182 }
 183
 184 void wxLogGui::Flush()
 185 {
 186     if ( !m_bHasMessages )
 187         return;
 188
 189     // do it right now to block any new calls to Flush() while we're here
 190     m_bHasMessages = FALSE;
 191
 192     wxString title = wxTheApp->GetAppName();
 193     if ( !!title )
 194     {
 195         title[0u] = wxToupper(title[0u]);
 196         title += _T(' ');
 197     }
 198
 199     long style;
 200     if ( m_bErrors ) {
 201         title += _("Error");
 202         style = wxICON_STOP;
 203     }
 204     else if ( m_bWarnings ) {
 205         title += _("Warning");
 206         style = wxICON_EXCLAMATION;
 207     }
 208     else {
 209         title += _("Information");
 210         style = wxICON_INFORMATION;
 211     }
 212
 213 #if wxUSE_LOG_DIALOG
 214     wxLogDialog dlg(wxTheApp->GetTopWindow(),
 215                     m_aMessages, m_aSeverity, m_aTimes,
 216                     title, style);
 217
 218     // clear the message list before showing the dialog because while it's
 219     // shown some new messages may appear
 220     Clear();
 221
 222     (void)dlg.ShowModal();
 223
 224 #else // !wxUSE_LOG_DIALOG
 225     // concatenate all strings (but not too many to not overfill the msg box)
 226     wxString str;
 227     size_t nLines = 0,
 228     nMsgCount = m_aMessages.Count();
 229
 230     // start from the most recent message
 231     for ( size_t n = nMsgCount; n > 0; n-- ) {
 232         // for Windows strings longer than this value are wrapped (NT 4.0)
 233         const size_t nMsgLineWidth = 156;
 234
 235         nLines += (m_aMessages[n - 1].Len() + nMsgLineWidth - 1) / nMsgLineWidth;
 236
 237         if ( nLines > 25 )  // don't put too many lines in message box
 238             break;
 239
 240         str << m_aMessages[n - 1] << wxT("\n");
 241     }
 242
 243     wxMessageBox(str, title, wxOK | style);
 244
 245     // no undisplayed messages whatsoever
 246     Clear();
 247 #endif // wxUSE_LOG_DIALOG/!wxUSE_LOG_DIALOG
 248
 249     // do it here again
 250     m_bHasMessages = FALSE;
 251 }
 252
 253 // the default behaviour is to discard all informational messages if there
 254 // are any errors/warnings.
 255 void wxLogGui::DoLog(wxLogLevel level, const wxChar *szString, time_t t)
 256 {
 257     switch ( level ) {
 258         case wxLOG_Info:
 259             if ( GetVerbose() )
 260         case wxLOG_Message:
 261             {
 262                 if ( !m_bErrors ) {
 263                     m_aMessages.Add(szString);
 264                     m_aSeverity.Add(wxLOG_Message);
 265                     m_aTimes.Add((long)t);
 266                     m_bHasMessages = TRUE;
 267                 }
 268             }
 269             break;
 270
 271         case wxLOG_Status:
 272 #if wxUSE_STATUSBAR
 273             {
 274                 // find the top window and set it's status text if it has any
 275                 wxFrame *pFrame = gs_pFrame;
 276                 if ( pFrame == NULL ) {
 277                     wxWindow *pWin = wxTheApp->GetTopWindow();
 278                     if ( pWin != NULL && pWin->IsKindOf(CLASSINFO(wxFrame)) ) {
 279                         pFrame = (wxFrame *)pWin;
 280                     }
 281                 }
 282
 283                 if ( pFrame && pFrame->GetStatusBar() )
 284                     pFrame->SetStatusText(szString);
 285             }
 286 #endif // wxUSE_STATUSBAR
 287             break;
 288
 289         case wxLOG_Trace:
 290         case wxLOG_Debug:
 291             #ifdef __WXDEBUG__
 292             {
 293                 #ifdef __WXMSW__
 294                     // don't prepend debug/trace here: it goes to the
 295                     // debug window anyhow, but do put a timestamp
 296                     wxString str;
 297                     TimeStamp(&str);
 298                     str << szString << wxT("\n\r");
 299                     OutputDebugString(str);
 300                 #else
 301                     // send them to stderr
 302                     wxFprintf(stderr, wxT("%s: %s\n"),
 303                               level == wxLOG_Trace ? wxT("Trace")
 304                                                    : wxT("Debug"),
 305                               szString);
 306                     fflush(stderr);
 307                 #endif
 308             }
 309             #endif // __WXDEBUG__
 310
 311             break;
 312
 313         case wxLOG_FatalError:
 314             // show this one immediately
 315             wxMessageBox(szString, _("Fatal error"), wxICON_HAND);
 316             wxExit();
 317             break;
 318
 319         case wxLOG_Error:
 320             if ( !m_bErrors ) {
 321 #if !wxUSE_LOG_DIALOG
 322                 // discard earlier informational messages if this is the 1st
 323                 // error because they might not make sense any more and showing
 324                 // them in a message box might be confusing
 325                 m_aMessages.Empty();
 326                 m_aSeverity.Empty();
 327                 m_aTimes.Empty();
 328 #endif // wxUSE_LOG_DIALOG
 329                 m_bErrors = TRUE;
 330             }
 331             // fall through
 332
 333         case wxLOG_Warning:
 334             if ( !m_bErrors ) {
 335                 // for the warning we don't discard the info messages
 336                 m_bWarnings = TRUE;
 337             }
 338
 339             m_aMessages.Add(szString);
 340             m_aSeverity.Add((int)level);
 341             m_aTimes.Add((long)t);
 342             m_bHasMessages = TRUE;
 343             break;
 344     }
 345 }
 346
 347 // ----------------------------------------------------------------------------
 348 // wxLogWindow and wxLogFrame implementation
 349 // ----------------------------------------------------------------------------
 350
 351 // log frame class
 352 // ---------------
 353 class wxLogFrame : public wxFrame
 354 {
 355 public:
 356     // ctor & dtor
 357     wxLogFrame(wxFrame *pParent, wxLogWindow *log, const wxChar *szTitle);
 358     virtual ~wxLogFrame();
 359
 360     // menu callbacks
 361     void OnClose(wxCommandEvent& event);
 362     void OnCloseWindow(wxCloseEvent& event);
 363 #if wxUSE_FILE
 364     void OnSave (wxCommandEvent& event);
 365 #endif // wxUSE_FILE
 366     void OnClear(wxCommandEvent& event);
 367
 368     void OnIdle(wxIdleEvent&);
 369
 370     // accessors
 371     wxTextCtrl *TextCtrl() const { return m_pTextCtrl; }
 372
 373 private:
 374     enum
 375     {
 376         Menu_Close = 100,
 377         Menu_Save,
 378         Menu_Clear
 379     };
 380
 381     // instead of closing just hide the window to be able to Show() it later
 382     void DoClose() { Show(FALSE); }
 383
 384     wxTextCtrl  *m_pTextCtrl;
 385     wxLogWindow *m_log;
 386
 387     DECLARE_EVENT_TABLE()
 388 };
 389
 390 BEGIN_EVENT_TABLE(wxLogFrame, wxFrame)
 391     // wxLogWindow menu events
 392     EVT_MENU(Menu_Close, wxLogFrame::OnClose)
 393 #if wxUSE_FILE
 394     EVT_MENU(Menu_Save,  wxLogFrame::OnSave)
 395 #endif // wxUSE_FILE
 396     EVT_MENU(Menu_Clear, wxLogFrame::OnClear)
 397
 398     EVT_CLOSE(wxLogFrame::OnCloseWindow)
 399 END_EVENT_TABLE()
 400
 401 wxLogFrame::wxLogFrame(wxFrame *pParent, wxLogWindow *log, const wxChar *szTitle)
 402           : wxFrame(pParent, -1, szTitle)
 403 {
 404     m_log = log;
 405
 406     m_pTextCtrl = new wxTextCtrl(this, -1, wxEmptyString, wxDefaultPosition,
 407             wxDefaultSize,
 408             wxTE_MULTILINE  |
 409             wxHSCROLL       |
 410             wxTE_READONLY);
 411
 412     // create menu
 413     wxMenuBar *pMenuBar = new wxMenuBar;
 414     wxMenu *pMenu = new wxMenu;
 415 #if wxUSE_FILE
 416     pMenu->Append(Menu_Save,  _("&Save..."), _("Save log contents to file"));
 417 #endif // wxUSE_FILE
 418     pMenu->Append(Menu_Clear, _("C&lear"), _("Clear the log contents"));
 419     pMenu->AppendSeparator();
 420     pMenu->Append(Menu_Close, _("&Close"), _("Close this window"));
 421     pMenuBar->Append(pMenu, _("&Log"));
 422     SetMenuBar(pMenuBar);
 423
 424 #if wxUSE_STATUSBAR
 425     // status bar for menu prompts
 426     CreateStatusBar();
 427 #endif // wxUSE_STATUSBAR
 428
 429     m_log->OnFrameCreate(this);
 430 }
 431
 432 void wxLogFrame::OnClose(wxCommandEvent& WXUNUSED(event))
 433 {
 434     DoClose();
 435 }
 436
 437 void wxLogFrame::OnCloseWindow(wxCloseEvent& WXUNUSED(event))
 438 {
 439     DoClose();
 440 }
 441
 442 #if wxUSE_FILE
 443 void wxLogFrame::OnSave(wxCommandEvent& WXUNUSED(event))
 444 {
 445     // get the file name
 446     // -----------------
 447     const wxChar *szFileName = wxSaveFileSelector(wxT("log"), wxT("txt"), wxT("log.txt"));
 448     if ( szFileName == NULL ) {
 449         // cancelled
 450         return;
 451     }
 452
 453     // open file
 454     // ---------
 455     wxFile file;
 456     bool bOk = FALSE;
 457     if ( wxFile::Exists(szFileName) ) {
 458         bool bAppend = FALSE;
 459         wxString strMsg;
 460         strMsg.Printf(_("Append log to file '%s' "
 461                     "(choosing [No] will overwrite it)?"), szFileName);
 462         switch ( wxMessageBox(strMsg, _("Question"), wxYES_NO | wxCANCEL) ) {
 463             case wxYES:
 464                 bAppend = TRUE;
 465                 break;
 466
 467             case wxNO:
 468                 bAppend = FALSE;
 469                 break;
 470
 471             case wxCANCEL:
 472                 return;
 473
 474             default:
 475                 wxFAIL_MSG(_("invalid message box return value"));
 476         }
 477
 478         if ( bAppend ) {
 479             bOk = file.Open(szFileName, wxFile::write_append);
 480         }
 481         else {
 482             bOk = file.Create(szFileName, TRUE /* overwrite */);
 483         }
 484     }
 485     else {
 486         bOk = file.Create(szFileName);
 487     }
 488
 489     // retrieve text and save it
 490     // -------------------------
 491     int nLines = m_pTextCtrl->GetNumberOfLines();
 492     for ( int nLine = 0; bOk && nLine < nLines; nLine++ ) {
 493         bOk = file.Write(m_pTextCtrl->GetLineText(nLine) +
 494                 // we're not going to pull in the whole wxTextFile if all we need is this...
 495 #if wxUSE_TEXTFILE
 496                 wxTextFile::GetEOL()
 497 #else // !wxUSE_TEXTFILE
 498                 '\n'
 499 #endif // wxUSE_TEXTFILE
 500                         );
 501     }
 502
 503     if ( bOk )
 504         bOk = file.Close();
 505
 506     if ( !bOk ) {
 507         wxLogError(_("Can't save log contents to file."));
 508     }
 509     else {
 510         wxLogStatus(this, _("Log saved to the file '%s'."), szFileName);
 511     }
 512 }
 513 #endif // wxUSE_FILE
 514
 515 void wxLogFrame::OnClear(wxCommandEvent& WXUNUSED(event))
 516 {
 517     m_pTextCtrl->Clear();
 518 }
 519
 520 wxLogFrame::~wxLogFrame()
 521 {
 522     m_log->OnFrameDelete(this);
 523 }
 524
 525 // wxLogWindow
 526 // -----------
 527 wxLogWindow::wxLogWindow(wxFrame *pParent,
 528                          const wxChar *szTitle,
 529                          bool bShow,
 530                          bool bDoPass)
 531 {
 532     m_bPassMessages = bDoPass;
 533
 534     m_pLogFrame = new wxLogFrame(pParent, this, szTitle);
 535     m_pOldLog = wxLog::SetActiveTarget(this);
 536
 537     if ( bShow )
 538         m_pLogFrame->Show(TRUE);
 539 }
 540
 541 void wxLogWindow::Show(bool bShow)
 542 {
 543     m_pLogFrame->Show(bShow);
 544 }
 545
 546 void wxLogWindow::Flush()
 547 {
 548     if ( m_pOldLog != NULL )
 549         m_pOldLog->Flush();
 550
 551     m_bHasMessages = FALSE;
 552 }
 553
 554 void wxLogWindow::DoLog(wxLogLevel level, const wxChar *szString, time_t t)
 555 {
 556     // first let the previous logger show it
 557     if ( m_pOldLog != NULL && m_bPassMessages ) {
 558         // bogus cast just to access protected DoLog
 559         ((wxLogWindow *)m_pOldLog)->DoLog(level, szString, t);
 560     }
 561
 562     if ( m_pLogFrame ) {
 563         switch ( level ) {
 564             case wxLOG_Status:
 565                 // by default, these messages are ignored by wxLog, so process
 566                 // them ourselves
 567                 if ( !wxIsEmpty(szString) )
 568                 {
 569                     wxString str;
 570                     str << _("Status: ") << szString;
 571                     DoLogString(str, t);
 572                 }
 573                 break;
 574
 575                 // don't put trace messages in the text window for 2 reasons:
 576                 // 1) there are too many of them
 577                 // 2) they may provoke other trace messages thus sending a program
 578                 //    into an infinite loop
 579             case wxLOG_Trace:
 580                 break;
 581
 582             default:
 583                 // and this will format it nicely and call our DoLogString()
 584                 wxLog::DoLog(level, szString, t);
 585         }
 586     }
 587
 588     m_bHasMessages = TRUE;
 589 }
 590
 591 void wxLogWindow::DoLogString(const wxChar *szString, time_t WXUNUSED(t))
 592 {
 593     // put the text into our window
 594     wxTextCtrl *pText = m_pLogFrame->TextCtrl();
 595
 596     // remove selection (WriteText is in fact ReplaceSelection)
 597 #ifdef __WXMSW__
 598     long nLen = pText->GetLastPosition();
 599     pText->SetSelection(nLen, nLen);
 600 #endif // Windows
 601
 602     wxString msg;
 603     TimeStamp(&msg);
 604     msg << szString << wxT('\n');
 605
 606     pText->AppendText(msg);
 607
 608     // TODO ensure that the line can be seen
 609 }
 610
 611 wxFrame *wxLogWindow::GetFrame() const
 612 {
 613     return m_pLogFrame;
 614 }
 615
 616 void wxLogWindow::OnFrameCreate(wxFrame * WXUNUSED(frame))
 617 {
 618 }
 619
 620 void wxLogWindow::OnFrameDelete(wxFrame * WXUNUSED(frame))
 621 {
 622     m_pLogFrame = (wxLogFrame *)NULL;
 623 }
 624
 625 wxLogWindow::~wxLogWindow()
 626 {
 627     delete m_pOldLog;
 628
 629     // may be NULL if log frame already auto destroyed itself
 630     delete m_pLogFrame;
 631 }
 632
 633 // ----------------------------------------------------------------------------
 634 // wxLogDialog
 635 // ----------------------------------------------------------------------------
 636
 637 #if wxUSE_LOG_DIALOG
 638
 639 static const size_t MARGIN = 10;
 640
 641 wxLogDialog::wxLogDialog(wxWindow *parent,
 642                          const wxArrayString& messages,
 643                          const wxArrayInt& severity,
 644                          const wxArrayLong& times,
 645                          const wxString& caption,
 646                          long style)
 647            : wxDialog(parent, -1, caption )
 648 {
 649     size_t count = messages.GetCount();
 650     m_messages.Alloc(count);
 651     m_severity.Alloc(count);
 652     m_times.Alloc(count);
 653
 654     for ( size_t n = 0; n < count; n++ )
 655     {
 656         wxString msg = messages[n];
 657         do
 658         {
 659             m_messages.Add(msg.BeforeFirst(_T('\n')));
 660             msg = msg.AfterFirst(_T('\n'));
 661
 662             m_severity.Add(severity[n]);
 663             m_times.Add(times[n]);
 664         }
 665         while ( !!msg );
 666     }
 667
 668     m_showingDetails = FALSE; // not initially
 669     m_listctrl = (wxListCtrl *)NULL;
 670
 671     // create the controls which are always shown and layout them: we use
 672     // sizers even though our window is not resizeable to calculate the size of
 673     // the dialog properly
 674     wxBoxSizer *sizerTop = new wxBoxSizer(wxVERTICAL);
 675     wxBoxSizer *sizerButtons = new wxBoxSizer(wxVERTICAL);
 676     wxBoxSizer *sizerAll = new wxBoxSizer(wxHORIZONTAL);
 677
 678     wxButton *btnOk = new wxButton(this, wxID_OK, _T("OK"));
 679     sizerButtons->Add(btnOk, 0, wxCENTRE|wxBOTTOM, MARGIN/2);
 680     m_btnDetails = new wxButton(this, wxID_MORE, _T("&Details >>"));
 681     sizerButtons->Add(m_btnDetails, 0, wxCENTRE|wxTOP, MARGIN/2 - 1);
 682
 683     wxIcon icon = wxTheApp->GetStdIcon((int)(style & wxICON_MASK));
 684     sizerAll->Add(new wxStaticBitmap(this, -1, icon), 0, wxCENTRE);
 685     const wxString& message = messages.Last();
 686     sizerAll->Add(CreateTextSizer(message), 0, wxCENTRE|wxLEFT|wxRIGHT, MARGIN);
 687     sizerAll->Add(sizerButtons, 0, wxALIGN_RIGHT|wxLEFT, MARGIN);
 688
 689     sizerTop->Add(sizerAll, 0, wxCENTRE|wxALL, MARGIN);
 690
 691     SetAutoLayout(TRUE);
 692     SetSizer(sizerTop);
 693
 694     sizerTop->SetSizeHints(this);
 695     sizerTop->Fit(this);
 696
 697     btnOk->SetFocus();
 698
 699     if ( count == 1 )
 700     {
 701         // no details... it's easier to disable a button than to change the
 702         // dialog layout depending on whether we have details or not
 703         m_btnDetails->Disable();
 704     }
 705
 706     Centre();
 707 }
 708
 709 void wxLogDialog::OnListSelect(wxListEvent& event)
 710 {
 711     // we can't just disable the control because this looks ugly under Windows
 712     // (wrong bg colour, no scrolling...), but we still want to disable
 713     // selecting items - it makes no sense here
 714     m_listctrl->SetItemState(event.GetItem(), 0, wxLIST_STATE_SELECTED);
 715 }
 716
 717 void wxLogDialog::OnOk(wxCommandEvent& WXUNUSED(event))
 718 {
 719     EndModal(wxID_OK);
 720 }
 721
 722 void wxLogDialog::OnDetails(wxCommandEvent& WXUNUSED(event))
 723 {
 724     wxSizer *sizer = GetSizer();
 725
 726     if ( m_showingDetails )
 727     {
 728         m_btnDetails->SetLabel(_T("&Details >>"));
 729
 730         sizer->Remove(m_listctrl);
 731     }
 732     else // show details now
 733     {
 734         m_btnDetails->SetLabel(_T("<< &Details"));
 735
 736         if ( !m_listctrl )
 737         {
 738             // create it now
 739             m_listctrl = new wxListCtrl(this, -1,
 740                                         wxDefaultPosition, wxDefaultSize,
 741                                         wxSUNKEN_BORDER |
 742                                         wxLC_REPORT |
 743                                         wxLC_NO_HEADER |
 744                                         wxLC_SINGLE_SEL);
 745             m_listctrl->InsertColumn(0, _("Message"));
 746             m_listctrl->InsertColumn(1, _("Time"));
 747
 748             // prepare the imagelist
 749             static const int ICON_SIZE = 16;
 750             wxImageList *imageList = new wxImageList(ICON_SIZE, ICON_SIZE);
 751
 752             // order should be the same as in the switch below!
 753             static const int icons[] =
 754             {
 755                 wxICON_ERROR,
 756                 wxICON_EXCLAMATION,
 757                 wxICON_INFORMATION
 758             };
 759
 760             for ( size_t icon = 0; icon < WXSIZEOF(icons); icon++ )
 761             {
 762                 wxBitmap bmp = wxTheApp->GetStdIcon(icons[icon]);
 763                 imageList->Add(wxImage(bmp).
 764                                 Rescale(ICON_SIZE, ICON_SIZE).
 765                                  ConvertToBitmap());
 766             }
 767
 768             m_listctrl->SetImageList(imageList, wxIMAGE_LIST_SMALL);
 769
 770             // and fill it
 771             wxString fmt = wxLog::GetTimestamp();
 772             if ( !fmt )
 773             {
 774                 // default format
 775                 fmt = _T("%X");
 776             }
 777
 778             size_t count = m_messages.GetCount();
 779             for ( size_t n = 0; n < count; n++ )
 780             {
 781                 int image;
 782                 switch ( m_severity[n] )
 783                 {
 784                     case wxLOG_Error:
 785                         image = 0;
 786                         break;
 787
 788                     case wxLOG_Warning:
 789                         image = 1;
 790                         break;
 791
 792                     default:
 793                         image = 2;
 794                 }
 795
 796                 m_listctrl->InsertItem(n, m_messages[n], image);
 797                 m_listctrl->SetItem(n, 1,
 798                                     wxDateTime((time_t)m_times[n]).Format(fmt));
 799             }
 800
 801             // let the columns size themselves
 802             m_listctrl->SetColumnWidth(0, wxLIST_AUTOSIZE);
 803             m_listctrl->SetColumnWidth(1, wxLIST_AUTOSIZE);
 804
 805             // get the approx height of the listctrl
 806             wxFont font = GetFont();
 807             if ( !font.Ok() )
 808                 font = *wxSWISS_FONT;
 809
 810             int y;
 811             GetTextExtent(_T("H"), (int*)NULL, &y, (int*)NULL, (int*)NULL, &font);
 812             int height = wxMin(y*(count + 3), 100);
 813             m_listctrl->SetSize(-1, height);
 814         }
 815
 816         sizer->Add(m_listctrl, 1, wxEXPAND|(wxALL & ~wxTOP), MARGIN);
 817     }
 818
 819     m_showingDetails = !m_showingDetails;
 820
 821     // in any case, our size changed - update
 822     sizer->SetSizeHints(this);
 823     sizer->Fit(this);
 824 }
 825
 826 wxLogDialog::~wxLogDialog()
 827 {
 828     if ( m_listctrl )
 829     {
 830         delete m_listctrl->GetImageList(wxIMAGE_LIST_SMALL);
 831     }
 832 }
 833
 834 #endif // wxUSE_LOG_DIALOG