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