src/generic/logg.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/generic/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 licence
  11 /////////////////////////////////////////////////////////////////////////////
  12
  13 // ============================================================================
  14 // declarations
  15 // ============================================================================
  16
  17 // ----------------------------------------------------------------------------
  18 // headers
  19 // ----------------------------------------------------------------------------
  20
  21 #if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
  22     #pragma implementation "logg.h"
  23 #endif
  24
  25 // For compilers that support precompilation, includes "wx.h".
  26 #include "wx/wxprec.h"
  27
  28 #ifdef __BORLANDC__
  29   #pragma hdrstop
  30 #endif
  31
  32 #ifndef WX_PRECOMP
  33     #include "wx/app.h"
  34     #include "wx/button.h"
  35     #include "wx/intl.h"
  36     #include "wx/log.h"
  37     #include "wx/menu.h"
  38     #include "wx/frame.h"
  39     #include "wx/filedlg.h"
  40     #include "wx/msgdlg.h"
  41     #include "wx/textctrl.h"
  42     #include "wx/sizer.h"
  43     #include "wx/statbmp.h"
  44     #include "wx/button.h"
  45     #include "wx/settings.h"
  46 #endif // WX_PRECOMP
  47
  48 #if wxUSE_LOGGUI || wxUSE_LOGWINDOW
  49
  50 #include "wx/file.h"
  51 #include "wx/textfile.h"
  52 #include "wx/statline.h"
  53 #include "wx/artprov.h"
  54
  55 #ifdef  __WXMSW__
  56   // for OutputDebugString()
  57   #include  "wx/msw/private.h"
  58 #endif // Windows
  59
  60 #ifdef  __WXPM__
  61   #include <time.h>
  62 #endif
  63
  64 #if wxUSE_LOG_DIALOG
  65     #include "wx/listctrl.h"
  66     #include "wx/imaglist.h"
  67     #include "wx/image.h"
  68 #else // !wxUSE_LOG_DIALOG
  69     #include "wx/msgdlg.h"
  70 #endif // wxUSE_LOG_DIALOG/!wxUSE_LOG_DIALOG
  71
  72 #if defined(__MWERKS__) && wxUSE_UNICODE
  73     #include <wtime.h>
  74 #endif
  75
  76 // the suffix we add to the button to show that the dialog can be expanded
  77 #define EXPAND_SUFFIX _T(" >>")
  78
  79 // ----------------------------------------------------------------------------
  80 // private classes
  81 // ----------------------------------------------------------------------------
  82
  83 #if wxUSE_LOG_DIALOG
  84
  85 // this function is a wrapper around strftime(3)
  86 // allows to exclude the usage of wxDateTime
  87 static wxString TimeStamp(const wxChar *format, time_t t)
  88 {
  89 #ifdef __WXWINCE__
  90     // FIXME
  91     return wxEmptyString;
  92 #else
  93     wxChar buf[4096];
  94     if ( !wxStrftime(buf, WXSIZEOF(buf), format, localtime(&t)) )
  95     {
  96         // buffer is too small?
  97         wxFAIL_MSG(_T("strftime() failed"));
  98     }
  99     return wxString(buf);
 100 #endif
 101 }
 102
 103
 104 class wxLogDialog : public wxDialog
 105 {
 106 public:
 107     wxLogDialog(wxWindow *parent,
 108                 const wxArrayString& messages,
 109                 const wxArrayInt& severity,
 110                 const wxArrayLong& timess,
 111                 const wxString& caption,
 112                 long style);
 113     virtual ~wxLogDialog();
 114
 115     // event handlers
 116     void OnOk(wxCommandEvent& event);
 117     void OnDetails(wxCommandEvent& event);
 118 #if wxUSE_FILE
 119     void OnSave(wxCommandEvent& event);
 120 #endif // wxUSE_FILE
 121     void OnListSelect(wxListEvent& event);
 122
 123 private:
 124     // create controls needed for the details display
 125     void CreateDetailsControls();
 126
 127     // the data for the listctrl
 128     wxArrayString m_messages;
 129     wxArrayInt m_severity;
 130     wxArrayLong m_times;
 131
 132     // the "toggle" button and its state
 133     wxButton *m_btnDetails;
 134     bool      m_showingDetails;
 135
 136     // the controls which are not shown initially (but only when details
 137     // button is pressed)
 138     wxListCtrl *m_listctrl;
 139 #if wxUSE_STATLINE
 140     wxStaticLine *m_statline;
 141 #endif // wxUSE_STATLINE
 142 #if wxUSE_FILE
 143     wxButton *m_btnSave;
 144 #endif // wxUSE_FILE
 145
 146     // the translated "Details" string
 147     static wxString ms_details;
 148
 149     DECLARE_EVENT_TABLE()
 150     DECLARE_NO_COPY_CLASS(wxLogDialog)
 151 };
 152
 153 BEGIN_EVENT_TABLE(wxLogDialog, wxDialog)
 154     EVT_BUTTON(wxID_CANCEL, wxLogDialog::OnOk)
 155     EVT_BUTTON(wxID_MORE,   wxLogDialog::OnDetails)
 156 #if wxUSE_FILE
 157     EVT_BUTTON(wxID_SAVE,   wxLogDialog::OnSave)
 158 #endif // wxUSE_FILE
 159     EVT_LIST_ITEM_SELECTED(-1, wxLogDialog::OnListSelect)
 160 END_EVENT_TABLE()
 161
 162 #endif // wxUSE_LOG_DIALOG
 163
 164 // ----------------------------------------------------------------------------
 165 // private functions
 166 // ----------------------------------------------------------------------------
 167
 168 #if wxUSE_FILE && wxUSE_FILEDLG
 169
 170 // pass an uninitialized file object, the function will ask the user for the
 171 // filename and try to open it, returns TRUE on success (file was opened),
 172 // FALSE if file couldn't be opened/created and -1 if the file selection
 173 // dialog was cancelled
 174 static int OpenLogFile(wxFile& file, wxString *filename = NULL);
 175
 176 #endif // wxUSE_FILE
 177
 178 // ----------------------------------------------------------------------------
 179 // global variables
 180 // ----------------------------------------------------------------------------
 181
 182 // we use a global variable to store the frame pointer for wxLogStatus - bad,
 183 // but it's the easiest way
 184 static wxFrame *gs_pFrame = NULL; // FIXME MT-unsafe
 185
 186 // ============================================================================
 187 // implementation
 188 // ============================================================================
 189
 190 // ----------------------------------------------------------------------------
 191 // global functions
 192 // ----------------------------------------------------------------------------
 193
 194 // accepts an additional argument which tells to which frame the output should
 195 // be directed
 196 void wxVLogStatus(wxFrame *pFrame, const wxChar *szFormat, va_list argptr)
 197 {
 198   wxString msg;
 199
 200   wxLog *pLog = wxLog::GetActiveTarget();
 201   if ( pLog != NULL ) {
 202     msg.PrintfV(szFormat, argptr);
 203
 204     wxASSERT( gs_pFrame == NULL ); // should be reset!
 205     gs_pFrame = pFrame;
 206 #ifdef __WXWINCE__
 207     wxLog::OnLog(wxLOG_Status, msg, 0);
 208 #else
 209     wxLog::OnLog(wxLOG_Status, msg, time(NULL));
 210 #endif
 211     gs_pFrame = (wxFrame *) NULL;
 212   }
 213 }
 214
 215 void wxLogStatus(wxFrame *pFrame, const wxChar *szFormat, ...)
 216 {
 217     va_list argptr;
 218     va_start(argptr, szFormat);
 219     wxVLogStatus(pFrame, szFormat, argptr);
 220     va_end(argptr);
 221 }
 222
 223 // ----------------------------------------------------------------------------
 224 // wxLogGui implementation (FIXME MT-unsafe)
 225 // ----------------------------------------------------------------------------
 226
 227 wxLogGui::wxLogGui()
 228 {
 229     Clear();
 230 }
 231
 232 void wxLogGui::Clear()
 233 {
 234     m_bErrors =
 235     m_bWarnings =
 236     m_bHasMessages = FALSE;
 237
 238     m_aMessages.Empty();
 239     m_aSeverity.Empty();
 240     m_aTimes.Empty();
 241 }
 242
 243 void wxLogGui::Flush()
 244 {
 245     if ( !m_bHasMessages )
 246         return;
 247
 248     // do it right now to block any new calls to Flush() while we're here
 249     m_bHasMessages = FALSE;
 250
 251     wxString appName = wxTheApp->GetAppName();
 252     if ( !!appName )
 253         appName[0u] = wxToupper(appName[0u]);
 254
 255     long style;
 256     wxString titleFormat;
 257     if ( m_bErrors ) {
 258         titleFormat = _("%s Error");
 259         style = wxICON_STOP;
 260     }
 261     else if ( m_bWarnings ) {
 262         titleFormat = _("%s Warning");
 263         style = wxICON_EXCLAMATION;
 264     }
 265     else {
 266         titleFormat = _("%s Information");
 267         style = wxICON_INFORMATION;
 268     }
 269
 270     wxString title;
 271     title.Printf(titleFormat, appName.c_str());
 272
 273     size_t nMsgCount = m_aMessages.Count();
 274
 275     // avoid showing other log dialogs until we're done with the dialog we're
 276     // showing right now: nested modal dialogs make for really bad UI!
 277     Suspend();
 278
 279     wxString str;
 280     if ( nMsgCount == 1 )
 281     {
 282         str = m_aMessages[0];
 283     }
 284     else // more than one message
 285     {
 286 #if wxUSE_LOG_DIALOG
 287
 288         wxLogDialog dlg(NULL,
 289                         m_aMessages, m_aSeverity, m_aTimes,
 290                         title, style);
 291
 292         // clear the message list before showing the dialog because while it's
 293         // shown some new messages may appear
 294         Clear();
 295
 296         (void)dlg.ShowModal();
 297 #else // !wxUSE_LOG_DIALOG
 298         // concatenate all strings (but not too many to not overfill the msg box)
 299         size_t nLines = 0;
 300
 301         // start from the most recent message
 302         for ( size_t n = nMsgCount; n > 0; n-- ) {
 303             // for Windows strings longer than this value are wrapped (NT 4.0)
 304             const size_t nMsgLineWidth = 156;
 305
 306             nLines += (m_aMessages[n - 1].Len() + nMsgLineWidth - 1) / nMsgLineWidth;
 307
 308             if ( nLines > 25 )  // don't put too many lines in message box
 309                 break;
 310
 311             str << m_aMessages[n - 1] << wxT("\n");
 312         }
 313 #endif // wxUSE_LOG_DIALOG/!wxUSE_LOG_DIALOG
 314     }
 315
 316     // this catches both cases of 1 message with wxUSE_LOG_DIALOG and any
 317     // situation without it
 318     if ( !!str )
 319     {
 320         wxMessageBox(str, title, wxOK | style);
 321
 322         // no undisplayed messages whatsoever
 323         Clear();
 324     }
 325
 326     // allow flushing the logs again
 327     Resume();
 328 }
 329
 330 // log all kinds of messages
 331 void wxLogGui::DoLog(wxLogLevel level, const wxChar *szString, time_t t)
 332 {
 333     switch ( level ) {
 334         case wxLOG_Info:
 335             if ( GetVerbose() )
 336         case wxLOG_Message:
 337             {
 338                 m_aMessages.Add(szString);
 339                 m_aSeverity.Add(wxLOG_Message);
 340                 m_aTimes.Add((long)t);
 341                 m_bHasMessages = TRUE;
 342             }
 343             break;
 344
 345         case wxLOG_Status:
 346 #if wxUSE_STATUSBAR
 347             {
 348                 // find the top window and set it's status text if it has any
 349                 wxFrame *pFrame = gs_pFrame;
 350                 if ( pFrame == NULL ) {
 351                     wxWindow *pWin = wxTheApp->GetTopWindow();
 352                     if ( pWin != NULL && pWin->IsKindOf(CLASSINFO(wxFrame)) ) {
 353                         pFrame = (wxFrame *)pWin;
 354                     }
 355                 }
 356
 357                 if ( pFrame && pFrame->GetStatusBar() )
 358                     pFrame->SetStatusText(szString);
 359             }
 360 #endif // wxUSE_STATUSBAR
 361             break;
 362
 363         case wxLOG_Trace:
 364         case wxLOG_Debug:
 365             #ifdef __WXDEBUG__
 366             {
 367                 wxString str;
 368                 TimeStamp(&str);
 369                 str += szString;
 370
 371                 #if defined(__WXMSW__) && !defined(__WXMICROWIN__)
 372                     // don't prepend debug/trace here: it goes to the
 373                     // debug window anyhow
 374                     str += wxT("\r\n");
 375                     OutputDebugString(str);
 376                 #else
 377                     // send them to stderr
 378                     wxFprintf(stderr, wxT("[%s] %s\n"),
 379                               level == wxLOG_Trace ? wxT("Trace")
 380                                                    : wxT("Debug"),
 381                               str.c_str());
 382                     fflush(stderr);
 383                 #endif
 384             }
 385             #endif // __WXDEBUG__
 386
 387             break;
 388
 389         case wxLOG_FatalError:
 390             // show this one immediately
 391             wxMessageBox(szString, _("Fatal error"), wxICON_HAND);
 392             wxExit();
 393             break;
 394
 395         case wxLOG_Error:
 396             if ( !m_bErrors ) {
 397 #if !wxUSE_LOG_DIALOG
 398                 // discard earlier informational messages if this is the 1st
 399                 // error because they might not make sense any more and showing
 400                 // them in a message box might be confusing
 401                 m_aMessages.Empty();
 402                 m_aSeverity.Empty();
 403                 m_aTimes.Empty();
 404 #endif // wxUSE_LOG_DIALOG
 405                 m_bErrors = TRUE;
 406             }
 407             // fall through
 408
 409         case wxLOG_Warning:
 410             if ( !m_bErrors ) {
 411                 // for the warning we don't discard the info messages
 412                 m_bWarnings = TRUE;
 413             }
 414
 415             m_aMessages.Add(szString);
 416             m_aSeverity.Add((int)level);
 417             m_aTimes.Add((long)t);
 418             m_bHasMessages = TRUE;
 419             break;
 420     }
 421 }
 422
 423 // ----------------------------------------------------------------------------
 424 // wxLogWindow and wxLogFrame implementation
 425 // ----------------------------------------------------------------------------
 426
 427 // log frame class
 428 // ---------------
 429 class wxLogFrame : public wxFrame
 430 {
 431 public:
 432     // ctor & dtor
 433     wxLogFrame(wxFrame *pParent, wxLogWindow *log, const wxChar *szTitle);
 434     virtual ~wxLogFrame();
 435
 436     // menu callbacks
 437     void OnClose(wxCommandEvent& event);
 438     void OnCloseWindow(wxCloseEvent& event);
 439 #if wxUSE_FILE
 440     void OnSave (wxCommandEvent& event);
 441 #endif // wxUSE_FILE
 442     void OnClear(wxCommandEvent& event);
 443
 444     // accessors
 445     wxTextCtrl *TextCtrl() const { return m_pTextCtrl; }
 446
 447 private:
 448     // use standard ids for our commands!
 449     enum
 450     {
 451         Menu_Close = wxID_CLOSE,
 452         Menu_Save  = wxID_SAVE,
 453         Menu_Clear = wxID_CLEAR
 454     };
 455
 456     // common part of OnClose() and OnCloseWindow()
 457     void DoClose();
 458
 459     wxTextCtrl  *m_pTextCtrl;
 460     wxLogWindow *m_log;
 461
 462     DECLARE_EVENT_TABLE()
 463     DECLARE_NO_COPY_CLASS(wxLogFrame)
 464 };
 465
 466 BEGIN_EVENT_TABLE(wxLogFrame, wxFrame)
 467     // wxLogWindow menu events
 468     EVT_MENU(Menu_Close, wxLogFrame::OnClose)
 469 #if wxUSE_FILE
 470     EVT_MENU(Menu_Save,  wxLogFrame::OnSave)
 471 #endif // wxUSE_FILE
 472     EVT_MENU(Menu_Clear, wxLogFrame::OnClear)
 473
 474     EVT_CLOSE(wxLogFrame::OnCloseWindow)
 475 END_EVENT_TABLE()
 476
 477 wxLogFrame::wxLogFrame(wxFrame *pParent, wxLogWindow *log, const wxChar *szTitle)
 478           : wxFrame(pParent, -1, szTitle)
 479 {
 480     m_log = log;
 481
 482     m_pTextCtrl = new wxTextCtrl(this, -1, wxEmptyString, wxDefaultPosition,
 483             wxDefaultSize,
 484             wxTE_MULTILINE  |
 485             wxHSCROLL       |
 486             // needed for Win32 to avoid 65Kb limit but it doesn't work well
 487             // when using RichEdit 2.0 which we always do in the Unicode build
 488 #if !wxUSE_UNICODE
 489             wxTE_RICH       |
 490 #endif // !wxUSE_UNICODE
 491             wxTE_READONLY);
 492
 493 #if wxUSE_MENUS
 494     // create menu
 495     wxMenuBar *pMenuBar = new wxMenuBar;
 496     wxMenu *pMenu = new wxMenu;
 497 #if wxUSE_FILE
 498     pMenu->Append(Menu_Save,  _("&Save..."), _("Save log contents to file"));
 499 #endif // wxUSE_FILE
 500     pMenu->Append(Menu_Clear, _("C&lear"), _("Clear the log contents"));
 501     pMenu->AppendSeparator();
 502     pMenu->Append(Menu_Close, _("&Close"), _("Close this window"));
 503     pMenuBar->Append(pMenu, _("&Log"));
 504     SetMenuBar(pMenuBar);
 505 #endif // wxUSE_MENUS
 506
 507 #if wxUSE_STATUSBAR
 508     // status bar for menu prompts
 509     CreateStatusBar();
 510 #endif // wxUSE_STATUSBAR
 511
 512     m_log->OnFrameCreate(this);
 513 }
 514
 515 void wxLogFrame::DoClose()
 516 {
 517     if ( m_log->OnFrameClose(this) )
 518     {
 519         // instead of closing just hide the window to be able to Show() it
 520         // later
 521         Show(FALSE);
 522     }
 523 }
 524
 525 void wxLogFrame::OnClose(wxCommandEvent& WXUNUSED(event))
 526 {
 527     DoClose();
 528 }
 529
 530 void wxLogFrame::OnCloseWindow(wxCloseEvent& WXUNUSED(event))
 531 {
 532     DoClose();
 533 }
 534
 535 #if wxUSE_FILE
 536 void wxLogFrame::OnSave(wxCommandEvent& WXUNUSED(event))
 537 {
 538 #if wxUSE_FILEDLG
 539     wxString filename;
 540     wxFile file;
 541     int rc = OpenLogFile(file, &filename);
 542     if ( rc == -1 )
 543     {
 544         // cancelled
 545         return;
 546     }
 547
 548     bool bOk = rc != 0;
 549
 550     // retrieve text and save it
 551     // -------------------------
 552     int nLines = m_pTextCtrl->GetNumberOfLines();
 553     for ( int nLine = 0; bOk && nLine < nLines; nLine++ ) {
 554         bOk = file.Write(m_pTextCtrl->GetLineText(nLine) +
 555                          wxTextFile::GetEOL());
 556     }
 557
 558     if ( bOk )
 559         bOk = file.Close();
 560
 561     if ( !bOk ) {
 562         wxLogError(_("Can't save log contents to file."));
 563     }
 564     else {
 565         wxLogStatus(this, _("Log saved to the file '%s'."), filename.c_str());
 566     }
 567 #endif
 568 }
 569 #endif // wxUSE_FILE
 570
 571 void wxLogFrame::OnClear(wxCommandEvent& WXUNUSED(event))
 572 {
 573     m_pTextCtrl->Clear();
 574 }
 575
 576 wxLogFrame::~wxLogFrame()
 577 {
 578     m_log->OnFrameDelete(this);
 579 }
 580
 581 // wxLogWindow
 582 // -----------
 583
 584 wxLogWindow::wxLogWindow(wxFrame *pParent,
 585                          const wxChar *szTitle,
 586                          bool bShow,
 587                          bool bDoPass)
 588 {
 589     PassMessages(bDoPass);
 590
 591     m_pLogFrame = new wxLogFrame(pParent, this, szTitle);
 592
 593     if ( bShow )
 594         m_pLogFrame->Show(TRUE);
 595 }
 596
 597 void wxLogWindow::Show(bool bShow)
 598 {
 599     m_pLogFrame->Show(bShow);
 600 }
 601
 602 void wxLogWindow::DoLog(wxLogLevel level, const wxChar *szString, time_t t)
 603 {
 604     // first let the previous logger show it
 605     wxLogPassThrough::DoLog(level, szString, t);
 606
 607     if ( m_pLogFrame ) {
 608         switch ( level ) {
 609             case wxLOG_Status:
 610                 // by default, these messages are ignored by wxLog, so process
 611                 // them ourselves
 612                 if ( !wxIsEmpty(szString) )
 613                 {
 614                     wxString str;
 615                     str << _("Status: ") << szString;
 616                     DoLogString(str, t);
 617                 }
 618                 break;
 619
 620                 // don't put trace messages in the text window for 2 reasons:
 621                 // 1) there are too many of them
 622                 // 2) they may provoke other trace messages thus sending a program
 623                 //    into an infinite loop
 624             case wxLOG_Trace:
 625                 break;
 626
 627             default:
 628                 // and this will format it nicely and call our DoLogString()
 629                 wxLog::DoLog(level, szString, t);
 630         }
 631     }
 632 }
 633
 634 void wxLogWindow::DoLogString(const wxChar *szString, time_t WXUNUSED(t))
 635 {
 636     // put the text into our window
 637     wxTextCtrl *pText = m_pLogFrame->TextCtrl();
 638
 639     // remove selection (WriteText is in fact ReplaceSelection)
 640 #ifdef __WXMSW__
 641     long nLen = pText->GetLastPosition();
 642     pText->SetSelection(nLen, nLen);
 643 #endif // Windows
 644
 645     wxString msg;
 646     TimeStamp(&msg);
 647     msg << szString << wxT('\n');
 648
 649     pText->AppendText(msg);
 650
 651     // TODO ensure that the line can be seen
 652 }
 653
 654 wxFrame *wxLogWindow::GetFrame() const
 655 {
 656     return m_pLogFrame;
 657 }
 658
 659 void wxLogWindow::OnFrameCreate(wxFrame * WXUNUSED(frame))
 660 {
 661 }
 662
 663 bool wxLogWindow::OnFrameClose(wxFrame * WXUNUSED(frame))
 664 {
 665     // allow to close
 666     return TRUE;
 667 }
 668
 669 void wxLogWindow::OnFrameDelete(wxFrame * WXUNUSED(frame))
 670 {
 671     m_pLogFrame = (wxLogFrame *)NULL;
 672 }
 673
 674 wxLogWindow::~wxLogWindow()
 675 {
 676     // may be NULL if log frame already auto destroyed itself
 677     delete m_pLogFrame;
 678 }
 679
 680 // ----------------------------------------------------------------------------
 681 // wxLogDialog
 682 // ----------------------------------------------------------------------------
 683
 684 #if wxUSE_LOG_DIALOG
 685
 686 static const size_t MARGIN = 10;
 687
 688 wxString wxLogDialog::ms_details;
 689
 690 wxLogDialog::wxLogDialog(wxWindow *parent,
 691                          const wxArrayString& messages,
 692                          const wxArrayInt& severity,
 693                          const wxArrayLong& times,
 694                          const wxString& caption,
 695                          long style)
 696            : wxDialog(parent, -1, caption,
 697                       wxDefaultPosition, wxDefaultSize,
 698                       wxDEFAULT_DIALOG_STYLE | wxRESIZE_BORDER)
 699 {
 700     if ( ms_details.IsEmpty() )
 701     {
 702         // ensure that we won't loop here if wxGetTranslation()
 703         // happens to pop up a Log message while translating this :-)
 704         ms_details = wxTRANSLATE("&Details");
 705         ms_details = wxGetTranslation(ms_details);
 706     }
 707
 708     size_t count = messages.GetCount();
 709     m_messages.Alloc(count);
 710     m_severity.Alloc(count);
 711     m_times.Alloc(count);
 712
 713     for ( size_t n = 0; n < count; n++ )
 714     {
 715         wxString msg = messages[n];
 716         do
 717         {
 718             m_messages.Add(msg.BeforeFirst(_T('\n')));
 719             msg = msg.AfterFirst(_T('\n'));
 720
 721             m_severity.Add(severity[n]);
 722             m_times.Add(times[n]);
 723         }
 724         while ( !!msg );
 725     }
 726
 727     m_showingDetails = FALSE; // not initially
 728     m_listctrl = (wxListCtrl *)NULL;
 729
 730 #if wxUSE_STATLINE
 731     m_statline = (wxStaticLine *)NULL;
 732 #endif // wxUSE_STATLINE
 733
 734 #if wxUSE_FILE
 735     m_btnSave = (wxButton *)NULL;
 736 #endif // wxUSE_FILE
 737
 738     // create the controls which are always shown and layout them: we use
 739     // sizers even though our window is not resizeable to calculate the size of
 740     // the dialog properly
 741     wxBoxSizer *sizerTop = new wxBoxSizer(wxVERTICAL);
 742     wxBoxSizer *sizerButtons = new wxBoxSizer(wxVERTICAL);
 743     wxBoxSizer *sizerAll = new wxBoxSizer(wxHORIZONTAL);
 744
 745     // this "Ok" button has wxID_CANCEL id - not very logical, but this allows
 746     // to close the log dialog with <Esc> which wouldn't work otherwise (as it
 747     // translates into click on cancel button)
 748     wxButton *btnOk = new wxButton(this, wxID_CANCEL, _("OK"));
 749     sizerButtons->Add(btnOk, 0, wxCENTRE | wxBOTTOM, MARGIN/2);
 750     m_btnDetails = new wxButton(this, wxID_MORE, ms_details + EXPAND_SUFFIX);
 751     sizerButtons->Add(m_btnDetails, 0, wxCENTRE | wxTOP, MARGIN/2 - 1);
 752
 753 #ifndef __WIN16__
 754     wxBitmap bitmap;
 755     switch ( style & wxICON_MASK )
 756     {
 757         case wxICON_ERROR:
 758             bitmap = wxArtProvider::GetIcon(wxART_ERROR, wxART_MESSAGE_BOX);
 759 #ifdef __WXPM__
 760             bitmap.SetId(wxICON_SMALL_ERROR);
 761 #endif
 762             break;
 763
 764         case wxICON_INFORMATION:
 765             bitmap = wxArtProvider::GetIcon(wxART_INFORMATION, wxART_MESSAGE_BOX);
 766 #ifdef __WXPM__
 767             bitmap.SetId(wxICON_SMALL_INFO);
 768 #endif
 769             break;
 770
 771         case wxICON_WARNING:
 772             bitmap = wxArtProvider::GetIcon(wxART_WARNING, wxART_MESSAGE_BOX);
 773 #ifdef __WXPM__
 774             bitmap.SetId(wxICON_SMALL_WARNING);
 775 #endif
 776             break;
 777
 778         default:
 779             wxFAIL_MSG(_T("incorrect log style"));
 780     }
 781     sizerAll->Add(new wxStaticBitmap(this, -1, bitmap), 0);
 782 #endif // !Win16
 783
 784     const wxString& message = messages.Last();
 785     sizerAll->Add(CreateTextSizer(message), 1,
 786                   wxALIGN_CENTRE_VERTICAL | wxLEFT | wxRIGHT, MARGIN);
 787     sizerAll->Add(sizerButtons, 0, wxALIGN_RIGHT | wxLEFT, MARGIN);
 788
 789     sizerTop->Add(sizerAll, 0, wxALL | wxEXPAND, MARGIN);
 790
 791     SetAutoLayout(TRUE);
 792     SetSizer(sizerTop);
 793
 794     // see comments in OnDetails()
 795     //
 796     // Note: Doing this, this way, triggered a nasty bug in
 797     //       wxTopLevelWindowGTK::GtkOnSize which took -1 literally once
 798     //       either of maxWidth or maxHeight was set.  This symptom has been
 799     //       fixed there, but it is a problem that remains as long as we allow
 800     //       unchecked access to the internal size members.  We really need to
 801     //       encapuslate window sizes more cleanly and make it clear when -1 will
 802     //       be substituted and when it will not.
 803
 804     wxSize size = sizerTop->Fit(this);
 805     m_maxHeight = size.y;
 806     SetSizeHints(size.x, size.y, m_maxWidth, m_maxHeight);
 807
 808     btnOk->SetFocus();
 809
 810     // this can't happen any more as we don't use this dialog in this case
 811 #if 0
 812     if ( count == 1 )
 813     {
 814         // no details... it's easier to disable a button than to change the
 815         // dialog layout depending on whether we have details or not
 816         m_btnDetails->Disable();
 817     }
 818 #endif // 0
 819
 820     Centre();
 821 }
 822
 823 void wxLogDialog::CreateDetailsControls()
 824 {
 825     // create the save button and separator line if possible
 826 #if wxUSE_FILE
 827     m_btnSave = new wxButton(this, wxID_SAVE, _("&Save..."));
 828 #endif // wxUSE_FILE
 829
 830 #if wxUSE_STATLINE
 831     m_statline = new wxStaticLine(this, -1);
 832 #endif // wxUSE_STATLINE
 833
 834     // create the list ctrl now
 835     m_listctrl = new wxListCtrl(this, -1,
 836                                 wxDefaultPosition, wxDefaultSize,
 837                                 wxSUNKEN_BORDER |
 838                                 wxLC_REPORT |
 839                                 wxLC_NO_HEADER |
 840                                 wxLC_SINGLE_SEL);
 841
 842     // no need to translate these strings as they're not shown to the
 843     // user anyhow (we use wxLC_NO_HEADER style)
 844     m_listctrl->InsertColumn(0, _T("Message"));
 845     m_listctrl->InsertColumn(1, _T("Time"));
 846
 847     // prepare the imagelist
 848     static const int ICON_SIZE = 16;
 849     wxImageList *imageList = new wxImageList(ICON_SIZE, ICON_SIZE);
 850
 851     // order should be the same as in the switch below!
 852     static const wxChar* icons[] =
 853     {
 854         wxART_ERROR,
 855         wxART_WARNING,
 856         wxART_INFORMATION
 857     };
 858
 859     bool loadedIcons = TRUE;
 860
 861 #ifndef __WIN16__
 862     for ( size_t icon = 0; icon < WXSIZEOF(icons); icon++ )
 863     {
 864         wxBitmap bmp = wxArtProvider::GetBitmap(icons[icon], wxART_MESSAGE_BOX,
 865                                                 wxSize(ICON_SIZE, ICON_SIZE));
 866
 867         // This may very well fail if there are insufficient colours available.
 868         // Degrade gracefully.
 869         if ( !bmp.Ok() )
 870         {
 871             loadedIcons = FALSE;
 872
 873             break;
 874         }
 875
 876         imageList->Add(bmp);
 877     }
 878
 879     m_listctrl->SetImageList(imageList, wxIMAGE_LIST_SMALL);
 880 #endif // !Win16
 881
 882     // and fill it
 883     wxString fmt = wxLog::GetTimestamp();
 884     if ( !fmt )
 885     {
 886         // default format
 887         fmt = _T("%c");
 888     }
 889
 890     size_t count = m_messages.GetCount();
 891     for ( size_t n = 0; n < count; n++ )
 892     {
 893         int image;
 894
 895 #ifndef __WIN16__
 896         if ( loadedIcons )
 897         {
 898             switch ( m_severity[n] )
 899             {
 900                 case wxLOG_Error:
 901                     image = 0;
 902                     break;
 903
 904                 case wxLOG_Warning:
 905                     image = 1;
 906                     break;
 907
 908                 default:
 909                     image = 2;
 910             }
 911         }
 912         else // failed to load images
 913 #endif // !Win16
 914         {
 915             image = -1;
 916         }
 917
 918         m_listctrl->InsertItem(n, m_messages[n], image);
 919         m_listctrl->SetItem(n, 1, TimeStamp(fmt, (time_t)m_times[n]));
 920     }
 921
 922     // let the columns size themselves
 923     m_listctrl->SetColumnWidth(0, wxLIST_AUTOSIZE);
 924     m_listctrl->SetColumnWidth(1, wxLIST_AUTOSIZE);
 925
 926     // calculate an approximately nice height for the listctrl
 927     int height = GetCharHeight()*(count + 4);
 928
 929     // but check that the dialog won't fall fown from the screen
 930     //
 931     // we use GetMinHeight() to get the height of the dialog part without the
 932     // details and we consider that the "Save" button below and the separator
 933     // line (and the margins around it) take about as much, hence double it
 934     int heightMax = wxGetDisplaySize().y - GetPosition().y - 2*GetMinHeight();
 935
 936     // we should leave a margin
 937     heightMax *= 9;
 938     heightMax /= 10;
 939
 940     m_listctrl->SetSize(-1, wxMin(height, heightMax));
 941 }
 942
 943 void wxLogDialog::OnListSelect(wxListEvent& event)
 944 {
 945     // we can't just disable the control because this looks ugly under Windows
 946     // (wrong bg colour, no scrolling...), but we still want to disable
 947     // selecting items - it makes no sense here
 948     m_listctrl->SetItemState(event.GetIndex(), 0, wxLIST_STATE_SELECTED);
 949 }
 950
 951 void wxLogDialog::OnOk(wxCommandEvent& WXUNUSED(event))
 952 {
 953     EndModal(wxID_OK);
 954 }
 955
 956 #if wxUSE_FILE
 957
 958 void wxLogDialog::OnSave(wxCommandEvent& WXUNUSED(event))
 959 {
 960 #if wxUSE_FILEDLG
 961     wxFile file;
 962     int rc = OpenLogFile(file);
 963     if ( rc == -1 )
 964     {
 965         // cancelled
 966         return;
 967     }
 968
 969     bool ok = rc != 0;
 970
 971     wxString fmt = wxLog::GetTimestamp();
 972     if ( !fmt )
 973     {
 974         // default format
 975         fmt = _T("%c");
 976     }
 977
 978     size_t count = m_messages.GetCount();
 979     for ( size_t n = 0; ok && (n < count); n++ )
 980     {
 981         wxString line;
 982         line << TimeStamp(fmt, (time_t)m_times[n])
 983              << _T(": ")
 984              << m_messages[n]
 985              << wxTextFile::GetEOL();
 986
 987         ok = file.Write(line);
 988     }
 989
 990     if ( ok )
 991         ok = file.Close();
 992
 993     if ( !ok )
 994         wxLogError(_("Can't save log contents to file."));
 995 #endif // wxUSE_FILEDLG
 996 }
 997
 998 #endif // wxUSE_FILE
 999
1000 void wxLogDialog::OnDetails(wxCommandEvent& WXUNUSED(event))
1001 {
1002     wxSizer *sizer = GetSizer();
1003
1004     if ( m_showingDetails )
1005     {
1006         m_btnDetails->SetLabel(ms_details + EXPAND_SUFFIX);
1007
1008         sizer->Detach( m_listctrl );
1009
1010 #if wxUSE_STATLINE
1011         sizer->Detach( m_statline );
1012 #endif // wxUSE_STATLINE
1013
1014 #if wxUSE_FILE
1015         sizer->Detach( m_btnSave );
1016 #endif // wxUSE_FILE
1017     }
1018     else // show details now
1019     {
1020         m_btnDetails->SetLabel(wxString(_T("<< ")) + ms_details);
1021
1022         if ( !m_listctrl )
1023         {
1024             CreateDetailsControls();
1025         }
1026
1027 #if wxUSE_STATLINE
1028         sizer->Add(m_statline, 0, wxEXPAND | (wxALL & ~wxTOP), MARGIN);
1029 #endif // wxUSE_STATLINE
1030
1031         sizer->Add(m_listctrl, 1, wxEXPAND | (wxALL & ~wxTOP), MARGIN);
1032
1033         // VZ: this doesn't work as this becomes the initial (and not only
1034         //     minimal) listctrl height as well - why?
1035 #if 0
1036         // allow the user to make the dialog shorter than its initial height -
1037         // without this it wouldn't work as the list ctrl would have been
1038         // incompressible
1039         sizer->SetItemMinSize(m_listctrl, 100, 3*GetCharHeight());
1040 #endif // 0
1041
1042 #if wxUSE_FILE
1043         sizer->Add(m_btnSave, 0, wxALIGN_RIGHT | (wxALL & ~wxTOP), MARGIN);
1044 #endif // wxUSE_FILE
1045     }
1046
1047     m_showingDetails = !m_showingDetails;
1048
1049     // in any case, our size changed - relayout everything and set new hints
1050     // ---------------------------------------------------------------------
1051
1052     // we have to reset min size constraints or Fit() would never reduce the
1053     // dialog size when collapsing it and we have to reset max constraint
1054     // because it wouldn't expand it otherwise
1055
1056     m_minHeight =
1057     m_maxHeight = -1;
1058
1059     // wxSizer::FitSize() is private, otherwise we might use it directly...
1060     wxSize sizeTotal = GetSize(),
1061            sizeClient = GetClientSize();
1062
1063     wxSize size = sizer->GetMinSize();
1064     size.x += sizeTotal.x - sizeClient.x;
1065     size.y += sizeTotal.y - sizeClient.y;
1066
1067     // we don't want to allow expanding the dialog in vertical direction as
1068     // this would show the "hidden" details but we can resize the dialog
1069     // vertically while the details are shown
1070     if ( !m_showingDetails )
1071         m_maxHeight = size.y;
1072
1073     SetSizeHints(size.x, size.y, m_maxWidth, m_maxHeight);
1074
1075     // don't change the width when expanding/collapsing
1076     SetSize(-1, size.y);
1077
1078 #ifdef __WXGTK__
1079     // VS: this is neccessary in order to force frame redraw under
1080     // WindowMaker or fvwm2 (and probably other broken WMs).
1081     // Otherwise, detailed list wouldn't be displayed.
1082     Show(TRUE);
1083 #endif // wxGTK
1084 }
1085
1086 wxLogDialog::~wxLogDialog()
1087 {
1088     if ( m_listctrl )
1089     {
1090         delete m_listctrl->GetImageList(wxIMAGE_LIST_SMALL);
1091     }
1092 }
1093
1094 #endif // wxUSE_LOG_DIALOG
1095
1096 #if wxUSE_FILE && wxUSE_FILEDLG
1097
1098 // pass an uninitialized file object, the function will ask the user for the
1099 // filename and try to open it, returns TRUE on success (file was opened),
1100 // FALSE if file couldn't be opened/created and -1 if the file selection
1101 // dialog was cancelled
1102 static int OpenLogFile(wxFile& file, wxString *pFilename)
1103 {
1104     // get the file name
1105     // -----------------
1106     wxString filename = wxSaveFileSelector(wxT("log"), wxT("txt"), wxT("log.txt"));
1107     if ( !filename ) {
1108         // cancelled
1109         return -1;
1110     }
1111
1112     // open file
1113     // ---------
1114     bool bOk;
1115     if ( wxFile::Exists(filename) ) {
1116         bool bAppend = FALSE;
1117         wxString strMsg;
1118         strMsg.Printf(_("Append log to file '%s' (choosing [No] will overwrite it)?"),
1119                       filename.c_str());
1120         switch ( wxMessageBox(strMsg, _("Question"),
1121                               wxICON_QUESTION | wxYES_NO | wxCANCEL) ) {
1122             case wxYES:
1123                 bAppend = TRUE;
1124                 break;
1125
1126             case wxNO:
1127                 bAppend = FALSE;
1128                 break;
1129
1130             case wxCANCEL:
1131                 return -1;
1132
1133             default:
1134                 wxFAIL_MSG(_("invalid message box return value"));
1135         }
1136
1137         if ( bAppend ) {
1138             bOk = file.Open(filename, wxFile::write_append);
1139         }
1140         else {
1141             bOk = file.Create(filename, TRUE /* overwrite */);
1142         }
1143     }
1144     else {
1145         bOk = file.Create(filename);
1146     }
1147
1148     if ( pFilename )
1149         *pFilename = filename;
1150
1151     return bOk;
1152 }
1153
1154 #endif // wxUSE_FILE
1155
1156 #endif // !(wxUSE_LOGGUI || wxUSE_LOGWINDOW)
1157
1158 #if wxUSE_LOG && wxUSE_TEXTCTRL
1159
1160 // ----------------------------------------------------------------------------
1161 // wxLogTextCtrl implementation
1162 // ----------------------------------------------------------------------------
1163
1164 wxLogTextCtrl::wxLogTextCtrl(wxTextCtrl *pTextCtrl)
1165 {
1166     m_pTextCtrl = pTextCtrl;
1167 }
1168
1169 void wxLogTextCtrl::DoLogString(const wxChar *szString, time_t WXUNUSED(t))
1170 {
1171     wxString msg;
1172     TimeStamp(&msg);
1173
1174     msg << szString << wxT('\n');
1175     m_pTextCtrl->AppendText(msg);
1176 }
1177
1178 #endif // wxUSE_LOG && wxUSE_TEXTCTRL
1179