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