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/button.h"
  37     #include "wx/intl.h"
  38     #include "wx/log.h"
  39     #include "wx/menu.h"
  40     #include "wx/frame.h"
  41     #include "wx/filedlg.h"
  42     #include "wx/msgdlg.h"
  43     #include "wx/textctrl.h"
  44     #include "wx/sizer.h"
  45     #include "wx/statbmp.h"
  46     #include "wx/button.h"
  47     #include "wx/settings.h"
  48 #endif // WX_PRECOMP
  49
  50 #if wxUSE_LOGGUI || wxUSE_LOGWINDOW
  51
  52 #include "wx/file.h"
  53 #include "wx/textfile.h"
  54 #include "wx/statline.h"
  55
  56 #ifdef  __WXMSW__
  57   // for OutputDebugString()
  58   #include  "wx/msw/private.h"
  59 #endif // Windows
  60
  61 #if wxUSE_LOG_DIALOG
  62     #include "wx/listctrl.h"
  63     #include "wx/imaglist.h"
  64     #include "wx/image.h"
  65 #else // !wxUSE_LOG_DIALOG
  66     #include "wx/msgdlg.h"
  67 #endif // wxUSE_LOG_DIALOG/!wxUSE_LOG_DIALOG
  68
  69 // ----------------------------------------------------------------------------
  70 // private classes
  71 // ----------------------------------------------------------------------------
  72
  73 #if wxUSE_LOG_DIALOG
  74
  75 // this function is a wrapper around strftime(3)
  76 // allows to exclude the usage of wxDateTime
  77 static wxString TimeStamp(const wxChar *format, time_t t)
  78 {
  79     wxChar buf[4096];
  80     if ( !wxStrftime(buf, WXSIZEOF(buf), format, localtime(&t)) )
  81     {
  82         // buffer is too small?
  83         wxFAIL_MSG(_T("strftime() failed"));
  84     }
  85     return wxString(buf);
  86 }
  87
  88
  89 class wxLogDialog : public wxDialog
  90 {
  91 public:
  92     wxLogDialog(wxWindow *parent,
  93                 const wxArrayString& messages,
  94                 const wxArrayInt& severity,
  95                 const wxArrayLong& timess,
  96                 const wxString& caption,
  97                 long style);
  98     virtual ~wxLogDialog();
  99
 100     // event handlers
 101     void OnOk(wxCommandEvent& event);
 102     void OnDetails(wxCommandEvent& event);
 103 #if wxUSE_FILE
 104     void OnSave(wxCommandEvent& event);
 105 #endif // wxUSE_FILE
 106     void OnListSelect(wxListEvent& event);
 107
 108 private:
 109     // create controls needed for the details display
 110     void CreateDetailsControls();
 111
 112     // the data for the listctrl
 113     wxArrayString m_messages;
 114     wxArrayInt m_severity;
 115     wxArrayLong m_times;
 116
 117     // the "toggle" button and its state
 118     wxButton *m_btnDetails;
 119     bool      m_showingDetails;
 120
 121     // the controls which are not shown initially (but only when details
 122     // button is pressed)
 123     wxListCtrl *m_listctrl;
 124 #if wxUSE_STATLINE
 125     wxStaticLine *m_statline;
 126 #endif // wxUSE_STATLINE
 127 #if wxUSE_FILE
 128     wxButton *m_btnSave;
 129 #endif // wxUSE_FILE
 130
 131     // the translated "Details" string
 132     static wxString ms_details;
 133
 134     DECLARE_EVENT_TABLE()
 135 };
 136
 137 BEGIN_EVENT_TABLE(wxLogDialog, wxDialog)
 138     EVT_BUTTON(wxID_CANCEL, wxLogDialog::OnOk)
 139     EVT_BUTTON(wxID_MORE,   wxLogDialog::OnDetails)
 140 #if wxUSE_FILE
 141     EVT_BUTTON(wxID_SAVE,   wxLogDialog::OnSave)
 142 #endif // wxUSE_FILE
 143     EVT_LIST_ITEM_SELECTED(-1, wxLogDialog::OnListSelect)
 144 END_EVENT_TABLE()
 145
 146 #endif // wxUSE_LOG_DIALOG
 147
 148 // ----------------------------------------------------------------------------
 149 // private functions
 150 // ----------------------------------------------------------------------------
 151
 152 #if wxUSE_FILE && wxUSE_FILEDLG
 153
 154 // pass an uninitialized file object, the function will ask the user for the
 155 // filename and try to open it, returns TRUE on success (file was opened),
 156 // FALSE if file couldn't be opened/created and -1 if the file selection
 157 // dialog was cancelled
 158 static int OpenLogFile(wxFile& file, wxString *filename = NULL);
 159
 160 #endif // wxUSE_FILE
 161
 162 // ----------------------------------------------------------------------------
 163 // global variables
 164 // ----------------------------------------------------------------------------
 165
 166 // we use a global variable to store the frame pointer for wxLogStatus - bad,
 167 // but it's the easiest way
 168 static wxFrame *gs_pFrame = NULL; // FIXME MT-unsafe
 169
 170 // ============================================================================
 171 // implementation
 172 // ============================================================================
 173
 174 // ----------------------------------------------------------------------------
 175 // global functions
 176 // ----------------------------------------------------------------------------
 177
 178 // accepts an additional argument which tells to which frame the output should
 179 // be directed
 180 void wxLogStatus(wxFrame *pFrame, const wxChar *szFormat, ...)
 181 {
 182   wxString msg;
 183
 184   wxLog *pLog = wxLog::GetActiveTarget();
 185   if ( pLog != NULL ) {
 186     va_list argptr;
 187     va_start(argptr, szFormat);
 188     msg.PrintfV(szFormat, argptr);
 189     va_end(argptr);
 190
 191     wxASSERT( gs_pFrame == NULL ); // should be reset!
 192     gs_pFrame = pFrame;
 193     wxLog::OnLog(wxLOG_Status, msg, time(NULL));
 194     gs_pFrame = (wxFrame *) NULL;
 195   }
 196 }
 197
 198 // ----------------------------------------------------------------------------
 199 // wxLogGui implementation (FIXME MT-unsafe)
 200 // ----------------------------------------------------------------------------
 201
 202 wxLogGui::wxLogGui()
 203 {
 204     Clear();
 205 }
 206
 207 void wxLogGui::Clear()
 208 {
 209     m_bErrors =
 210     m_bWarnings =
 211     m_bHasMessages = FALSE;
 212
 213     m_aMessages.Empty();
 214     m_aSeverity.Empty();
 215     m_aTimes.Empty();
 216 }
 217
 218 void wxLogGui::Flush()
 219 {
 220     if ( !m_bHasMessages )
 221         return;
 222
 223     // do it right now to block any new calls to Flush() while we're here
 224     m_bHasMessages = FALSE;
 225
 226     wxString appName = wxTheApp->GetAppName();
 227     if ( !!appName )
 228         appName[0u] = wxToupper(appName[0u]);
 229
 230     long style;
 231     wxString titleFormat;
 232     if ( m_bErrors ) {
 233         titleFormat = _("%s Error");
 234         style = wxICON_STOP;
 235     }
 236     else if ( m_bWarnings ) {
 237         titleFormat = _("%s Warning");
 238         style = wxICON_EXCLAMATION;
 239     }
 240     else {
 241         titleFormat = _("%s Information");
 242         style = wxICON_INFORMATION;
 243     }
 244
 245     wxString title;
 246     title.Printf(titleFormat, appName.c_str());
 247
 248     size_t nMsgCount = m_aMessages.Count();
 249
 250     // avoid showing other log dialogs until we're done with the dialog we're
 251     // showing right now: nested modal dialogs make for really bad UI!
 252     Suspend();
 253
 254     wxString str;
 255     if ( nMsgCount == 1 )
 256     {
 257         str = m_aMessages[0];
 258     }
 259     else // more than one message
 260     {
 261 #if wxUSE_LOG_DIALOG
 262
 263         wxLogDialog dlg(NULL,
 264                         m_aMessages, m_aSeverity, m_aTimes,
 265                         title, style);
 266
 267         // clear the message list before showing the dialog because while it's
 268         // shown some new messages may appear
 269         Clear();
 270
 271         (void)dlg.ShowModal();
 272 #else // !wxUSE_LOG_DIALOG
 273         // concatenate all strings (but not too many to not overfill the msg box)
 274         size_t nLines = 0;
 275
 276         // start from the most recent message
 277         for ( size_t n = nMsgCount; n > 0; n-- ) {
 278             // for Windows strings longer than this value are wrapped (NT 4.0)
 279             const size_t nMsgLineWidth = 156;
 280
 281             nLines += (m_aMessages[n - 1].Len() + nMsgLineWidth - 1) / nMsgLineWidth;
 282
 283             if ( nLines > 25 )  // don't put too many lines in message box
 284                 break;
 285
 286             str << m_aMessages[n - 1] << wxT("\n");
 287         }
 288 #endif // wxUSE_LOG_DIALOG/!wxUSE_LOG_DIALOG
 289     }
 290
 291     // this catches both cases of 1 message with wxUSE_LOG_DIALOG and any
 292     // situation without it
 293     if ( !!str )
 294     {
 295         wxMessageBox(str, title, wxOK | style);
 296
 297         // no undisplayed messages whatsoever
 298         Clear();
 299     }
 300
 301     // allow flushing the logs again
 302     Resume();
 303 }
 304
 305 // log all kinds of messages
 306 void wxLogGui::DoLog(wxLogLevel level, const wxChar *szString, time_t t)
 307 {
 308     switch ( level ) {
 309         case wxLOG_Info:
 310             if ( GetVerbose() )
 311         case wxLOG_Message:
 312             {
 313                 if ( !m_bErrors ) {
 314                     m_aMessages.Add(szString);
 315                     m_aSeverity.Add(wxLOG_Message);
 316                     m_aTimes.Add((long)t);
 317                     m_bHasMessages = TRUE;
 318                 }
 319             }
 320             break;
 321
 322         case wxLOG_Status:
 323 #if wxUSE_STATUSBAR
 324             {
 325                 // find the top window and set it's status text if it has any
 326                 wxFrame *pFrame = gs_pFrame;
 327                 if ( pFrame == NULL ) {
 328                     wxWindow *pWin = wxTheApp->GetTopWindow();
 329                     if ( pWin != NULL && pWin->IsKindOf(CLASSINFO(wxFrame)) ) {
 330                         pFrame = (wxFrame *)pWin;
 331                     }
 332                 }
 333
 334                 if ( pFrame && pFrame->GetStatusBar() )
 335                     pFrame->SetStatusText(szString);
 336             }
 337 #endif // wxUSE_STATUSBAR
 338             break;
 339
 340         case wxLOG_Trace:
 341         case wxLOG_Debug:
 342             #ifdef __WXDEBUG__
 343             {
 344                 wxString str;
 345                 TimeStamp(&str);
 346                 str += szString;
 347
 348                 #if defined(__WXMSW__) && !defined(__WXMICROWIN__)
 349                     // don't prepend debug/trace here: it goes to the
 350                     // debug window anyhow
 351                     str += wxT("\r\n");
 352                     OutputDebugString(str);
 353                 #else
 354                     // send them to stderr
 355                     wxFprintf(stderr, wxT("[%s] %s\n"),
 356                               level == wxLOG_Trace ? wxT("Trace")
 357                                                    : wxT("Debug"),
 358                               str.c_str());
 359                     fflush(stderr);
 360                 #endif
 361             }
 362             #endif // __WXDEBUG__
 363
 364             break;
 365
 366         case wxLOG_FatalError:
 367             // show this one immediately
 368             wxMessageBox(szString, _("Fatal error"), wxICON_HAND);
 369             wxExit();
 370             break;
 371
 372         case wxLOG_Error:
 373             if ( !m_bErrors ) {
 374 #if !wxUSE_LOG_DIALOG
 375                 // discard earlier informational messages if this is the 1st
 376                 // error because they might not make sense any more and showing
 377                 // them in a message box might be confusing
 378                 m_aMessages.Empty();
 379                 m_aSeverity.Empty();
 380                 m_aTimes.Empty();
 381 #endif // wxUSE_LOG_DIALOG
 382                 m_bErrors = TRUE;
 383             }
 384             // fall through
 385
 386         case wxLOG_Warning:
 387             if ( !m_bErrors ) {
 388                 // for the warning we don't discard the info messages
 389                 m_bWarnings = TRUE;
 390             }
 391
 392             m_aMessages.Add(szString);
 393             m_aSeverity.Add((int)level);
 394             m_aTimes.Add((long)t);
 395             m_bHasMessages = TRUE;
 396             break;
 397     }
 398 }
 399
 400 // ----------------------------------------------------------------------------
 401 // wxLogWindow and wxLogFrame implementation
 402 // ----------------------------------------------------------------------------
 403
 404 // log frame class
 405 // ---------------
 406 class wxLogFrame : public wxFrame
 407 {
 408 public:
 409     // ctor & dtor
 410     wxLogFrame(wxFrame *pParent, wxLogWindow *log, const wxChar *szTitle);
 411     virtual ~wxLogFrame();
 412
 413     // menu callbacks
 414     void OnClose(wxCommandEvent& event);
 415     void OnCloseWindow(wxCloseEvent& event);
 416 #if wxUSE_FILE
 417     void OnSave (wxCommandEvent& event);
 418 #endif // wxUSE_FILE
 419     void OnClear(wxCommandEvent& event);
 420
 421     void OnIdle(wxIdleEvent&);
 422
 423     // accessors
 424     wxTextCtrl *TextCtrl() const { return m_pTextCtrl; }
 425
 426 private:
 427     // use standard ids for our commands!
 428     enum
 429     {
 430         Menu_Close = wxID_CLOSE,
 431         Menu_Save  = wxID_SAVE,
 432         Menu_Clear = wxID_CLEAR
 433     };
 434
 435     // common part of OnClose() and OnCloseWindow()
 436     void DoClose();
 437
 438     wxTextCtrl  *m_pTextCtrl;
 439     wxLogWindow *m_log;
 440
 441     DECLARE_EVENT_TABLE()
 442 };
 443
 444 BEGIN_EVENT_TABLE(wxLogFrame, wxFrame)
 445     // wxLogWindow menu events
 446     EVT_MENU(Menu_Close, wxLogFrame::OnClose)
 447 #if wxUSE_FILE
 448     EVT_MENU(Menu_Save,  wxLogFrame::OnSave)
 449 #endif // wxUSE_FILE
 450     EVT_MENU(Menu_Clear, wxLogFrame::OnClear)
 451
 452     EVT_CLOSE(wxLogFrame::OnCloseWindow)
 453 END_EVENT_TABLE()
 454
 455 wxLogFrame::wxLogFrame(wxFrame *pParent, wxLogWindow *log, const wxChar *szTitle)
 456           : wxFrame(pParent, -1, szTitle)
 457 {
 458     m_log = log;
 459
 460     m_pTextCtrl = new wxTextCtrl(this, -1, wxEmptyString, wxDefaultPosition,
 461             wxDefaultSize,
 462             wxTE_MULTILINE  |
 463             wxHSCROLL       |
 464             wxTE_READONLY);
 465
 466 #if wxUSE_MENUS
 467     // create menu
 468     wxMenuBar *pMenuBar = new wxMenuBar;
 469     wxMenu *pMenu = new wxMenu;
 470 #if wxUSE_FILE
 471     pMenu->Append(Menu_Save,  _("&Save..."), _("Save log contents to file"));
 472 #endif // wxUSE_FILE
 473     pMenu->Append(Menu_Clear, _("C&lear"), _("Clear the log contents"));
 474     pMenu->AppendSeparator();
 475     pMenu->Append(Menu_Close, _("&Close"), _("Close this window"));
 476     pMenuBar->Append(pMenu, _("&Log"));
 477     SetMenuBar(pMenuBar);
 478 #endif // wxUSE_MENUS
 479
 480 #if wxUSE_STATUSBAR
 481     // status bar for menu prompts
 482     CreateStatusBar();
 483 #endif // wxUSE_STATUSBAR
 484
 485     m_log->OnFrameCreate(this);
 486 }
 487
 488 void wxLogFrame::DoClose()
 489 {
 490     if ( m_log->OnFrameClose(this) )
 491     {
 492         // instead of closing just hide the window to be able to Show() it
 493         // later
 494         Show(FALSE);
 495     }
 496 }
 497
 498 void wxLogFrame::OnClose(wxCommandEvent& WXUNUSED(event))
 499 {
 500     DoClose();
 501 }
 502
 503 void wxLogFrame::OnCloseWindow(wxCloseEvent& WXUNUSED(event))
 504 {
 505     DoClose();
 506 }
 507
 508 #if wxUSE_FILE
 509 void wxLogFrame::OnSave(wxCommandEvent& WXUNUSED(event))
 510 {
 511 #if wxUSE_FILEDLG
 512     wxString filename;
 513     wxFile file;
 514     int rc = OpenLogFile(file, &filename);
 515     if ( rc == -1 )
 516     {
 517         // cancelled
 518         return;
 519     }
 520
 521     bool bOk = rc != 0;
 522
 523     // retrieve text and save it
 524     // -------------------------
 525     int nLines = m_pTextCtrl->GetNumberOfLines();
 526     for ( int nLine = 0; bOk && nLine < nLines; nLine++ ) {
 527         bOk = file.Write(m_pTextCtrl->GetLineText(nLine) +
 528                          wxTextFile::GetEOL());
 529     }
 530
 531     if ( bOk )
 532         bOk = file.Close();
 533
 534     if ( !bOk ) {
 535         wxLogError(_("Can't save log contents to file."));
 536     }
 537     else {
 538         wxLogStatus(this, _("Log saved to the file '%s'."), filename.c_str());
 539     }
 540 #endif
 541 }
 542 #endif // wxUSE_FILE
 543
 544 void wxLogFrame::OnClear(wxCommandEvent& WXUNUSED(event))
 545 {
 546     m_pTextCtrl->Clear();
 547 }
 548
 549 wxLogFrame::~wxLogFrame()
 550 {
 551     m_log->OnFrameDelete(this);
 552 }
 553
 554 // wxLogWindow
 555 // -----------
 556
 557 wxLogWindow::wxLogWindow(wxFrame *pParent,
 558                          const wxChar *szTitle,
 559                          bool bShow,
 560                          bool bDoPass)
 561 {
 562     PassMessages(bDoPass);
 563
 564     m_pLogFrame = new wxLogFrame(pParent, this, szTitle);
 565
 566     if ( bShow )
 567         m_pLogFrame->Show(TRUE);
 568 }
 569
 570 void wxLogWindow::Show(bool bShow)
 571 {
 572     m_pLogFrame->Show(bShow);
 573 }
 574
 575 void wxLogWindow::DoLog(wxLogLevel level, const wxChar *szString, time_t t)
 576 {
 577     // first let the previous logger show it
 578     wxLogPassThrough::DoLog(level, szString, t);
 579
 580     if ( m_pLogFrame ) {
 581         switch ( level ) {
 582             case wxLOG_Status:
 583                 // by default, these messages are ignored by wxLog, so process
 584                 // them ourselves
 585                 if ( !wxIsEmpty(szString) )
 586                 {
 587                     wxString str;
 588                     str << _("Status: ") << szString;
 589                     DoLogString(str, t);
 590                 }
 591                 break;
 592
 593                 // don't put trace messages in the text window for 2 reasons:
 594                 // 1) there are too many of them
 595                 // 2) they may provoke other trace messages thus sending a program
 596                 //    into an infinite loop
 597             case wxLOG_Trace:
 598                 break;
 599
 600             default:
 601                 // and this will format it nicely and call our DoLogString()
 602                 wxLog::DoLog(level, szString, t);
 603         }
 604     }
 605
 606     m_bHasMessages = TRUE;
 607 }
 608
 609 void wxLogWindow::DoLogString(const wxChar *szString, time_t WXUNUSED(t))
 610 {
 611     // put the text into our window
 612     wxTextCtrl *pText = m_pLogFrame->TextCtrl();
 613
 614     // remove selection (WriteText is in fact ReplaceSelection)
 615 #ifdef __WXMSW__
 616     long nLen = pText->GetLastPosition();
 617     pText->SetSelection(nLen, nLen);
 618 #endif // Windows
 619
 620     wxString msg;
 621     TimeStamp(&msg);
 622     msg << szString << wxT('\n');
 623
 624     pText->AppendText(msg);
 625
 626     // TODO ensure that the line can be seen
 627 }
 628
 629 wxFrame *wxLogWindow::GetFrame() const
 630 {
 631     return m_pLogFrame;
 632 }
 633
 634 void wxLogWindow::OnFrameCreate(wxFrame * WXUNUSED(frame))
 635 {
 636 }
 637
 638 bool wxLogWindow::OnFrameClose(wxFrame * WXUNUSED(frame))
 639 {
 640     // allow to close
 641     return TRUE;
 642 }
 643
 644 void wxLogWindow::OnFrameDelete(wxFrame * WXUNUSED(frame))
 645 {
 646     m_pLogFrame = (wxLogFrame *)NULL;
 647 }
 648
 649 wxLogWindow::~wxLogWindow()
 650 {
 651     // may be NULL if log frame already auto destroyed itself
 652     delete m_pLogFrame;
 653 }
 654
 655 // ----------------------------------------------------------------------------
 656 // wxLogDialog
 657 // ----------------------------------------------------------------------------
 658
 659 #if wxUSE_LOG_DIALOG
 660
 661 static const size_t MARGIN = 10;
 662
 663 wxString wxLogDialog::ms_details;
 664
 665 wxLogDialog::wxLogDialog(wxWindow *parent,
 666                          const wxArrayString& messages,
 667                          const wxArrayInt& severity,
 668                          const wxArrayLong& times,
 669                          const wxString& caption,
 670                          long style)
 671            : wxDialog(parent, -1, caption,
 672                       wxDefaultPosition, wxDefaultSize,
 673                       wxDEFAULT_DIALOG_STYLE | wxRESIZE_BORDER)
 674 {
 675     if ( ms_details.IsEmpty() )
 676     {
 677         // ensure that we won't loop here if wxGetTranslation()
 678         // happens to pop up a Log message while translating this :-)
 679         ms_details = wxTRANSLATE("&Details");
 680         ms_details = wxGetTranslation(ms_details);
 681     }
 682
 683     size_t count = messages.GetCount();
 684     m_messages.Alloc(count);
 685     m_severity.Alloc(count);
 686     m_times.Alloc(count);
 687
 688     for ( size_t n = 0; n < count; n++ )
 689     {
 690         wxString msg = messages[n];
 691         do
 692         {
 693             m_messages.Add(msg.BeforeFirst(_T('\n')));
 694             msg = msg.AfterFirst(_T('\n'));
 695
 696             m_severity.Add(severity[n]);
 697             m_times.Add(times[n]);
 698         }
 699         while ( !!msg );
 700     }
 701
 702     m_showingDetails = FALSE; // not initially
 703     m_listctrl = (wxListCtrl *)NULL;
 704
 705 #if wxUSE_STATLINE
 706     m_statline = (wxStaticLine *)NULL;
 707 #endif // wxUSE_STATLINE
 708
 709 #if wxUSE_FILE
 710     m_btnSave = (wxButton *)NULL;
 711 #endif // wxUSE_FILE
 712
 713     // create the controls which are always shown and layout them: we use
 714     // sizers even though our window is not resizeable to calculate the size of
 715     // the dialog properly
 716     wxBoxSizer *sizerTop = new wxBoxSizer(wxVERTICAL);
 717     wxBoxSizer *sizerButtons = new wxBoxSizer(wxVERTICAL);
 718     wxBoxSizer *sizerAll = new wxBoxSizer(wxHORIZONTAL);
 719
 720     // this "Ok" button has wxID_CANCEL id - not very logical, but this allows
 721     // to close the log dialog with <Esc> which wouldn't work otherwise (as it
 722     // translates into click on cancel button)
 723     wxButton *btnOk = new wxButton(this, wxID_CANCEL, _("OK"));
 724     sizerButtons->Add(btnOk, 0, wxCENTRE | wxBOTTOM, MARGIN/2);
 725     m_btnDetails = new wxButton(this, wxID_MORE, ms_details + _T(" >>"));
 726     sizerButtons->Add(m_btnDetails, 0, wxCENTRE | wxTOP, MARGIN/2 - 1);
 727
 728 #ifndef __WIN16__
 729     wxIcon icon = wxTheApp->GetStdIcon((int)(style & wxICON_MASK));
 730     sizerAll->Add(new wxStaticBitmap(this, -1, icon), 0);
 731 #endif // !Win16
 732
 733     const wxString& message = messages.Last();
 734     sizerAll->Add(CreateTextSizer(message), 1,
 735                   wxALIGN_CENTRE_VERTICAL | wxLEFT | wxRIGHT, MARGIN);
 736     sizerAll->Add(sizerButtons, 0, wxALIGN_RIGHT | wxLEFT, MARGIN);
 737
 738     sizerTop->Add(sizerAll, 0, wxALL | wxEXPAND, MARGIN);
 739
 740     SetAutoLayout(TRUE);
 741     SetSizer(sizerTop);
 742
 743     sizerTop->SetSizeHints(this);
 744     sizerTop->Fit(this);
 745
 746     btnOk->SetFocus();
 747
 748     // this can't happen any more as we don't use this dialog in this case
 749 #if 0
 750     if ( count == 1 )
 751     {
 752         // no details... it's easier to disable a button than to change the
 753         // dialog layout depending on whether we have details or not
 754         m_btnDetails->Disable();
 755     }
 756 #endif // 0
 757
 758     Centre();
 759 }
 760
 761 void wxLogDialog::CreateDetailsControls()
 762 {
 763     // create the save button and separator line if possible
 764 #if wxUSE_FILE
 765     m_btnSave = new wxButton(this, wxID_SAVE, _("&Save..."));
 766 #endif // wxUSE_FILE
 767
 768 #if wxUSE_STATLINE
 769     m_statline = new wxStaticLine(this, -1);
 770 #endif // wxUSE_STATLINE
 771
 772     // create the list ctrl now
 773     m_listctrl = new wxListCtrl(this, -1,
 774                                 wxDefaultPosition, wxDefaultSize,
 775                                 wxSUNKEN_BORDER |
 776                                 wxLC_REPORT |
 777                                 wxLC_NO_HEADER |
 778                                 wxLC_SINGLE_SEL);
 779
 780     // no need to translate these strings as they're not shown to the
 781     // user anyhow (we use wxLC_NO_HEADER style)
 782     m_listctrl->InsertColumn(0, _T("Message"));
 783     m_listctrl->InsertColumn(1, _T("Time"));
 784
 785     // prepare the imagelist
 786     static const int ICON_SIZE = 16;
 787     wxImageList *imageList = new wxImageList(ICON_SIZE, ICON_SIZE);
 788
 789     // order should be the same as in the switch below!
 790     static const int icons[] =
 791     {
 792         wxICON_ERROR,
 793         wxICON_EXCLAMATION,
 794         wxICON_INFORMATION
 795     };
 796
 797     bool loadedIcons = TRUE;
 798
 799 #ifndef __WIN16__
 800     for ( size_t icon = 0; icon < WXSIZEOF(icons); icon++ )
 801     {
 802         wxBitmap bmp = wxTheApp->GetStdIcon(icons[icon]);
 803
 804         // This may very well fail if there are insufficient
 805         // colours available. Degrade gracefully.
 806
 807         if (!bmp.Ok())
 808             loadedIcons = FALSE;
 809         else
 810             imageList->Add(wxImage(bmp).
 811                         Rescale(ICON_SIZE, ICON_SIZE).
 812                          ConvertToBitmap());
 813     }
 814
 815     m_listctrl->SetImageList(imageList, wxIMAGE_LIST_SMALL);
 816 #endif // !Win16
 817
 818     // and fill it
 819     wxString fmt = wxLog::GetTimestamp();
 820     if ( !fmt )
 821     {
 822         // default format
 823         fmt = _T("%c");
 824     }
 825
 826     size_t count = m_messages.GetCount();
 827     for ( size_t n = 0; n < count; n++ )
 828     {
 829         int image = -1;
 830 #ifndef __WIN16__
 831         switch ( m_severity[n] )
 832         {
 833             case wxLOG_Error:
 834                 image = 0;
 835                 break;
 836
 837             case wxLOG_Warning:
 838                 image = 1;
 839                 break;
 840
 841             default:
 842                 image = 2;
 843         }
 844 #endif // !Win16
 845
 846         if (!loadedIcons)
 847             image = -1;
 848
 849         if (image > -1)
 850             m_listctrl->InsertItem(n, m_messages[n], image);
 851         else
 852             m_listctrl->InsertItem(n, m_messages[n]);
 853
 854         m_listctrl->SetItem(n, 1,
 855                             TimeStamp(fmt, (time_t)m_times[n]));
 856     }
 857
 858     // let the columns size themselves
 859     m_listctrl->SetColumnWidth(0, wxLIST_AUTOSIZE);
 860     m_listctrl->SetColumnWidth(1, wxLIST_AUTOSIZE);
 861
 862     // get the approx height of the listctrl
 863     wxFont font = GetFont();
 864     if ( !font.Ok() )
 865         font = *wxSWISS_FONT;
 866
 867     int y;
 868     GetTextExtent(_T("H"), (int*)NULL, &y, (int*)NULL, (int*)NULL, &font);
 869     int height = wxMax(y*(count + 3), 100);
 870
 871     // if the height as computed from list items exceeds, together with the
 872     // actual message & controls, the screen, make it smaller
 873     int heightMax =
 874         (3*wxSystemSettings::GetSystemMetric(wxSYS_SCREEN_Y))/5 - GetSize().y;
 875
 876     m_listctrl->SetSize(-1, wxMin(height, heightMax));
 877 }
 878
 879 void wxLogDialog::OnListSelect(wxListEvent& event)
 880 {
 881     // we can't just disable the control because this looks ugly under Windows
 882     // (wrong bg colour, no scrolling...), but we still want to disable
 883     // selecting items - it makes no sense here
 884     m_listctrl->SetItemState(event.GetIndex(), 0, wxLIST_STATE_SELECTED);
 885 }
 886
 887 void wxLogDialog::OnOk(wxCommandEvent& WXUNUSED(event))
 888 {
 889     EndModal(wxID_OK);
 890 }
 891
 892 #if wxUSE_FILE
 893
 894 void wxLogDialog::OnSave(wxCommandEvent& WXUNUSED(event))
 895 {
 896 #if wxUSE_FILEDLG
 897     wxFile file;
 898     int rc = OpenLogFile(file);
 899     if ( rc == -1 )
 900     {
 901         // cancelled
 902         return;
 903     }
 904
 905     bool ok = rc != 0;
 906
 907     wxString fmt = wxLog::GetTimestamp();
 908     if ( !fmt )
 909     {
 910         // default format
 911         fmt = _T("%c");
 912     }
 913
 914     size_t count = m_messages.GetCount();
 915     for ( size_t n = 0; ok && (n < count); n++ )
 916     {
 917         wxString line;
 918         line << TimeStamp(fmt, (time_t)m_times[n])
 919              << _T(": ")
 920              << m_messages[n]
 921              << wxTextFile::GetEOL();
 922
 923         ok = file.Write(line);
 924     }
 925
 926     if ( ok )
 927         ok = file.Close();
 928
 929     if ( !ok )
 930         wxLogError(_("Can't save log contents to file."));
 931 #endif
 932 }
 933
 934 #endif // wxUSE_FILE
 935
 936 void wxLogDialog::OnDetails(wxCommandEvent& WXUNUSED(event))
 937 {
 938     wxSizer *sizer = GetSizer();
 939
 940     if ( m_showingDetails )
 941     {
 942         m_btnDetails->SetLabel(ms_details + _T(">>"));
 943
 944         sizer->Remove(m_listctrl);
 945
 946 #if wxUSE_STATLINE
 947         sizer->Remove(m_statline);
 948 #endif // wxUSE_STATLINE
 949
 950 #if wxUSE_FILE
 951         sizer->Remove(m_btnSave);
 952 #endif // wxUSE_FILE
 953     }
 954     else // show details now
 955     {
 956         m_btnDetails->SetLabel(wxString(_T("<< ")) + ms_details);
 957
 958         if ( !m_listctrl )
 959         {
 960             CreateDetailsControls();
 961         }
 962
 963 #if wxUSE_STATLINE
 964         sizer->Add(m_statline, 0, wxEXPAND | (wxALL & ~wxTOP), MARGIN);
 965 #endif // wxUSE_STATLINE
 966
 967         sizer->Add(m_listctrl, 1, wxEXPAND | (wxALL & ~wxTOP), MARGIN);
 968
 969 #if wxUSE_FILE
 970         sizer->Add(m_btnSave, 0, wxALIGN_RIGHT | (wxALL & ~wxTOP), MARGIN);
 971 #endif // wxUSE_FILE
 972     }
 973
 974     m_showingDetails = !m_showingDetails;
 975
 976     // in any case, our size changed - update
 977     sizer->SetSizeHints(this);
 978     sizer->Fit(this);
 979
 980 #ifdef __WXGTK__
 981     // VS: this is neccessary in order to force frame redraw under
 982     // WindowMaker or fvwm2 (and probably other broken WMs).
 983     // Otherwise, detailed list wouldn't be displayed.
 984     Show(TRUE);
 985 #endif // wxGTK
 986 }
 987
 988 wxLogDialog::~wxLogDialog()
 989 {
 990     if ( m_listctrl )
 991     {
 992         delete m_listctrl->GetImageList(wxIMAGE_LIST_SMALL);
 993     }
 994 }
 995
 996 #endif // wxUSE_LOG_DIALOG
 997
 998 #if wxUSE_FILE && wxUSE_FILEDLG
 999
1000 // pass an uninitialized file object, the function will ask the user for the
1001 // filename and try to open it, returns TRUE on success (file was opened),
1002 // FALSE if file couldn't be opened/created and -1 if the file selection
1003 // dialog was cancelled
1004 static int OpenLogFile(wxFile& file, wxString *pFilename)
1005 {
1006     // get the file name
1007     // -----------------
1008     wxString filename = wxSaveFileSelector(wxT("log"), wxT("txt"), wxT("log.txt"));
1009     if ( !filename ) {
1010         // cancelled
1011         return -1;
1012     }
1013
1014     // open file
1015     // ---------
1016     bool bOk = FALSE;
1017     if ( wxFile::Exists(filename) ) {
1018         bool bAppend = FALSE;
1019         wxString strMsg;
1020         strMsg.Printf(_("Append log to file '%s' (choosing [No] will overwrite it)?"),
1021                       filename.c_str());
1022         switch ( wxMessageBox(strMsg, _("Question"),
1023                               wxICON_QUESTION | wxYES_NO | wxCANCEL) ) {
1024             case wxYES:
1025                 bAppend = TRUE;
1026                 break;
1027
1028             case wxNO:
1029                 bAppend = FALSE;
1030                 break;
1031
1032             case wxCANCEL:
1033                 return -1;
1034
1035             default:
1036                 wxFAIL_MSG(_("invalid message box return value"));
1037         }
1038
1039         if ( bAppend ) {
1040             bOk = file.Open(filename, wxFile::write_append);
1041         }
1042         else {
1043             bOk = file.Create(filename, TRUE /* overwrite */);
1044         }
1045     }
1046     else {
1047         bOk = file.Create(filename);
1048     }
1049
1050     if ( pFilename )
1051         *pFilename = filename;
1052
1053     return bOk;
1054 }
1055
1056 #endif // wxUSE_FILE
1057
1058 #endif // !(wxUSE_LOGGUI || wxUSE_LOGWINDOW)
1059
1060 #if wxUSE_TEXTCTRL
1061
1062 // ----------------------------------------------------------------------------
1063 // wxLogTextCtrl implementation
1064 // ----------------------------------------------------------------------------
1065
1066 wxLogTextCtrl::wxLogTextCtrl(wxTextCtrl *pTextCtrl)
1067 {
1068     m_pTextCtrl = pTextCtrl;
1069 }
1070
1071 void wxLogTextCtrl::DoLogString(const wxChar *szString, time_t WXUNUSED(t))
1072 {
1073     wxString msg;
1074     TimeStamp(&msg);
1075
1076 #if defined(__WXMAC__) && !defined(__DARWIN__)
1077     // VZ: this is a bug in wxMac, it *must* accept '\n' as new line, the
1078     //     translation must be done in wxTextCtrl, not here! (FIXME)
1079     msg << szString << wxT('\r');
1080 #else
1081     msg << szString << wxT('\n');
1082 #endif
1083
1084     m_pTextCtrl->AppendText(msg);
1085 }
1086
1087 #endif // wxUSE_TEXTCTRL
1088