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