src/generic/logg.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        logg.cpp
   3 // Purpose:     wxLog-derived classes which need GUI support (the rest is in
   4 //              src/common/log.cpp)
   5 // Author:      Vadim Zeitlin
   6 // Modified by:
   7 // Created:     20.09.99 (extracted from src/common/log.cpp)
   8 // RCS-ID:      $Id$
   9 // Copyright:   (c) 1998 Vadim Zeitlin <zeitlin@dptmaths.ens-cachan.fr>
  10 // Licence:     wxWindows license
  11 /////////////////////////////////////////////////////////////////////////////
  12
  13 // ============================================================================
  14 // declarations
  15 // ============================================================================
  16
  17 // ----------------------------------------------------------------------------
  18 // headers
  19 // ----------------------------------------------------------------------------
  20
  21 // no #pragma implementation "log.h" because it's already in src/common/log.cpp
  22
  23 // For compilers that support precompilation, includes "wx.h".
  24 #include "wx/wxprec.h"
  25
  26 #ifdef __BORLANDC__
  27   #pragma hdrstop
  28 #endif
  29
  30 #if !wxUSE_GUI
  31     #error "This file can't be compiled without GUI!"
  32 #endif
  33
  34 #ifndef WX_PRECOMP
  35     #include "wx/app.h"
  36     #include "wx/button.h"
  37     #include "wx/intl.h"
  38     #include "wx/log.h"
  39     #include "wx/menu.h"
  40     #include "wx/frame.h"
  41     #include "wx/filedlg.h"
  42     #include "wx/msgdlg.h"
  43     #include "wx/textctrl.h"
  44     #include "wx/sizer.h"
  45     #include "wx/statbmp.h"
  46     #include "wx/button.h"
  47     #include "wx/settings.h"
  48 #endif // WX_PRECOMP
  49
  50 #if wxUSE_LOGGUI || wxUSE_LOGWINDOW
  51
  52 #include "wx/file.h"
  53 #include "wx/textfile.h"
  54 #include "wx/statline.h"
  55
  56 #ifdef  __WXMSW__
  57   // for OutputDebugString()
  58   #include  "wx/msw/private.h"
  59 #endif // Windows
  60
  61 #if wxUSE_LOG_DIALOG
  62     #include "wx/listctrl.h"
  63     #include "wx/imaglist.h"
  64     #include "wx/image.h"
  65 #else // !wxUSE_LOG_DIALOG
  66     #include "wx/msgdlg.h"
  67 #endif // wxUSE_LOG_DIALOG/!wxUSE_LOG_DIALOG
  68
  69 // ----------------------------------------------------------------------------
  70 // private classes
  71 // ----------------------------------------------------------------------------
  72
  73 #if wxUSE_LOG_DIALOG
  74
  75 // this function is a wrapper around strftime(3)
  76 // allows to exclude the usage of wxDateTime
  77 static wxString TimeStamp(const wxChar *format, time_t t)
  78 {
  79     wxChar buf[4096];
  80     if ( !wxStrftime(buf, WXSIZEOF(buf), format, localtime(&t)) )
  81     {
  82         // buffer is too small?
  83         wxFAIL_MSG(_T("strftime() failed"));
  84     }
  85     return wxString(buf);
  86 }
  87
  88
  89 class wxLogDialog : public wxDialog
  90 {
  91 public:
  92     wxLogDialog(wxWindow *parent,
  93                 const wxArrayString& messages,
  94                 const wxArrayInt& severity,
  95                 const wxArrayLong& timess,
  96                 const wxString& caption,
  97                 long style);
  98     virtual ~wxLogDialog();
  99
 100     // event handlers
 101     void OnOk(wxCommandEvent& event);
 102     void OnDetails(wxCommandEvent& event);
 103 #if wxUSE_FILE
 104     void OnSave(wxCommandEvent& event);
 105 #endif // wxUSE_FILE
 106     void OnListSelect(wxListEvent& event);
 107
 108 private:
 109     // create controls needed for the details display
 110     void CreateDetailsControls();
 111
 112     // the data for the listctrl
 113     wxArrayString m_messages;
 114     wxArrayInt m_severity;
 115     wxArrayLong m_times;
 116
 117     // the "toggle" button and its state
 118     wxButton *m_btnDetails;
 119     bool      m_showingDetails;
 120
 121     // the controls which are not shown initially (but only when details
 122     // button is pressed)
 123     wxListCtrl *m_listctrl;
 124 #if wxUSE_STATLINE
 125     wxStaticLine *m_statline;
 126 #endif // wxUSE_STATLINE
 127 #if wxUSE_FILE
 128     wxButton *m_btnSave;
 129 #endif // wxUSE_FILE
 130
 131     // the translated "Details" string
 132     static wxString ms_details;
 133
 134     DECLARE_EVENT_TABLE()
 135 };
 136
 137 BEGIN_EVENT_TABLE(wxLogDialog, wxDialog)
 138     EVT_BUTTON(wxID_CANCEL, wxLogDialog::OnOk)
 139     EVT_BUTTON(wxID_MORE,   wxLogDialog::OnDetails)
 140 #if wxUSE_FILE
 141     EVT_BUTTON(wxID_SAVE,   wxLogDialog::OnSave)
 142 #endif // wxUSE_FILE
 143     EVT_LIST_ITEM_SELECTED(-1, wxLogDialog::OnListSelect)
 144 END_EVENT_TABLE()
 145
 146 #endif // wxUSE_LOG_DIALOG
 147
 148 // ----------------------------------------------------------------------------
 149 // private functions
 150 // ----------------------------------------------------------------------------
 151
 152 #if wxUSE_FILE && wxUSE_FILEDLG
 153
 154 // pass an uninitialized file object, the function will ask the user for the
 155 // filename and try to open it, returns TRUE on success (file was opened),
 156 // FALSE if file couldn't be opened/created and -1 if the file selection
 157 // dialog was cancelled
 158 static int OpenLogFile(wxFile& file, wxString *filename = NULL);
 159
 160 #endif // wxUSE_FILE
 161
 162 // ----------------------------------------------------------------------------
 163 // global variables
 164 // ----------------------------------------------------------------------------
 165
 166 // we use a global variable to store the frame pointer for wxLogStatus - bad,
 167 // but it's the easiest way
 168 static wxFrame *gs_pFrame = NULL; // FIXME MT-unsafe
 169
 170 // ============================================================================
 171 // implementation
 172 // ============================================================================
 173
 174 // ----------------------------------------------------------------------------
 175 // global functions
 176 // ----------------------------------------------------------------------------
 177
 178 // accepts an additional argument which tells to which frame the output should
 179 // be directed
 180 void wxVLogStatus(wxFrame *pFrame, const wxChar *szFormat, va_list argptr)
 181 {
 182   wxString msg;
 183
 184   wxLog *pLog = wxLog::GetActiveTarget();
 185   if ( pLog != NULL ) {
 186     msg.PrintfV(szFormat, argptr);
 187
 188     wxASSERT( gs_pFrame == NULL ); // should be reset!
 189     gs_pFrame = pFrame;
 190     wxLog::OnLog(wxLOG_Status, msg, time(NULL));
 191     gs_pFrame = (wxFrame *) NULL;
 192   }
 193 }
 194
 195 void wxLogStatus(wxFrame *pFrame, const wxChar *szFormat, ...)
 196 {
 197     va_list argptr;
 198     va_start(argptr, szFormat);
 199     wxVLogStatus(pFrame, szFormat, argptr);
 200     va_end(argptr);
 201 }
 202
 203 // ----------------------------------------------------------------------------
 204 // wxLogGui implementation (FIXME MT-unsafe)
 205 // ----------------------------------------------------------------------------
 206
 207 wxLogGui::wxLogGui()
 208 {
 209     Clear();
 210 }
 211
 212 void wxLogGui::Clear()
 213 {
 214     m_bErrors =
 215     m_bWarnings =
 216     m_bHasMessages = FALSE;
 217
 218     m_aMessages.Empty();
 219     m_aSeverity.Empty();
 220     m_aTimes.Empty();
 221 }
 222
 223 void wxLogGui::Flush()
 224 {
 225     if ( !m_bHasMessages )
 226         return;
 227
 228     // do it right now to block any new calls to Flush() while we're here
 229     m_bHasMessages = FALSE;
 230
 231     wxString appName = wxTheApp->GetAppName();
 232     if ( !!appName )
 233         appName[0u] = wxToupper(appName[0u]);
 234
 235     long style;
 236     wxString titleFormat;
 237     if ( m_bErrors ) {
 238         titleFormat = _("%s Error");
 239         style = wxICON_STOP;
 240     }
 241     else if ( m_bWarnings ) {
 242         titleFormat = _("%s Warning");
 243         style = wxICON_EXCLAMATION;
 244     }
 245     else {
 246         titleFormat = _("%s Information");
 247         style = wxICON_INFORMATION;
 248     }
 249
 250     wxString title;
 251     title.Printf(titleFormat, appName.c_str());
 252
 253     size_t nMsgCount = m_aMessages.Count();
 254
 255     // avoid showing other log dialogs until we're done with the dialog we're
 256     // showing right now: nested modal dialogs make for really bad UI!
 257     Suspend();
 258
 259     wxString str;
 260     if ( nMsgCount == 1 )
 261     {
 262         str = m_aMessages[0];
 263     }
 264     else // more than one message
 265     {
 266 #if wxUSE_LOG_DIALOG
 267
 268         wxLogDialog dlg(NULL,
 269                         m_aMessages, m_aSeverity, m_aTimes,
 270                         title, style);
 271
 272         // clear the message list before showing the dialog because while it's
 273         // shown some new messages may appear
 274         Clear();
 275
 276         (void)dlg.ShowModal();
 277 #else // !wxUSE_LOG_DIALOG
 278         // concatenate all strings (but not too many to not overfill the msg box)
 279         size_t nLines = 0;
 280
 281         // start from the most recent message
 282         for ( size_t n = nMsgCount; n > 0; n-- ) {
 283             // for Windows strings longer than this value are wrapped (NT 4.0)
 284             const size_t nMsgLineWidth = 156;
 285
 286             nLines += (m_aMessages[n - 1].Len() + nMsgLineWidth - 1) / nMsgLineWidth;
 287
 288             if ( nLines > 25 )  // don't put too many lines in message box
 289                 break;
 290
 291             str << m_aMessages[n - 1] << wxT("\n");
 292         }
 293 #endif // wxUSE_LOG_DIALOG/!wxUSE_LOG_DIALOG
 294     }
 295
 296     // this catches both cases of 1 message with wxUSE_LOG_DIALOG and any
 297     // situation without it
 298     if ( !!str )
 299     {
 300         wxMessageBox(str, title, wxOK | style);
 301
 302         // no undisplayed messages whatsoever
 303         Clear();
 304     }
 305
 306     // allow flushing the logs again
 307     Resume();
 308 }
 309
 310 // log all kinds of messages
 311 void wxLogGui::DoLog(wxLogLevel level, const wxChar *szString, time_t t)
 312 {
 313     switch ( level ) {
 314         case wxLOG_Info:
 315             if ( GetVerbose() )
 316         case wxLOG_Message:
 317             {
 318                 m_aMessages.Add(szString);
 319                 m_aSeverity.Add(wxLOG_Message);
 320                 m_aTimes.Add((long)t);
 321                 m_bHasMessages = TRUE;
 322             }
 323             break;
 324
 325         case wxLOG_Status:
 326 #if wxUSE_STATUSBAR
 327             {
 328                 // find the top window and set it's status text if it has any
 329                 wxFrame *pFrame = gs_pFrame;
 330                 if ( pFrame == NULL ) {
 331                     wxWindow *pWin = wxTheApp->GetTopWindow();
 332                     if ( pWin != NULL && pWin->IsKindOf(CLASSINFO(wxFrame)) ) {
 333                         pFrame = (wxFrame *)pWin;
 334                     }
 335                 }
 336
 337                 if ( pFrame && pFrame->GetStatusBar() )
 338                     pFrame->SetStatusText(szString);
 339             }
 340 #endif // wxUSE_STATUSBAR
 341             break;
 342
 343         case wxLOG_Trace:
 344         case wxLOG_Debug:
 345             #ifdef __WXDEBUG__
 346             {
 347                 wxString str;
 348                 TimeStamp(&str);
 349                 str += szString;
 350
 351                 #if defined(__WXMSW__) && !defined(__WXMICROWIN__)
 352                     // don't prepend debug/trace here: it goes to the
 353                     // debug window anyhow
 354                     str += wxT("\r\n");
 355                     OutputDebugString(str);
 356                 #else
 357                     // send them to stderr
 358                     wxFprintf(stderr, wxT("[%s] %s\n"),
 359                               level == wxLOG_Trace ? wxT("Trace")
 360                                                    : wxT("Debug"),
 361                               str.c_str());
 362                     fflush(stderr);
 363                 #endif
 364             }
 365             #endif // __WXDEBUG__
 366
 367             break;
 368
 369         case wxLOG_FatalError:
 370             // show this one immediately
 371             wxMessageBox(szString, _("Fatal error"), wxICON_HAND);
 372             wxExit();
 373             break;
 374
 375         case wxLOG_Error:
 376             if ( !m_bErrors ) {
 377 #if !wxUSE_LOG_DIALOG
 378                 // discard earlier informational messages if this is the 1st
 379                 // error because they might not make sense any more and showing
 380                 // them in a message box might be confusing
 381                 m_aMessages.Empty();
 382                 m_aSeverity.Empty();
 383                 m_aTimes.Empty();
 384 #endif // wxUSE_LOG_DIALOG
 385                 m_bErrors = TRUE;
 386             }
 387             // fall through
 388
 389         case wxLOG_Warning:
 390             if ( !m_bErrors ) {
 391                 // for the warning we don't discard the info messages
 392                 m_bWarnings = TRUE;
 393             }
 394
 395             m_aMessages.Add(szString);
 396             m_aSeverity.Add((int)level);
 397             m_aTimes.Add((long)t);
 398             m_bHasMessages = TRUE;
 399             break;
 400     }
 401 }
 402
 403 // ----------------------------------------------------------------------------
 404 // wxLogWindow and wxLogFrame implementation
 405 // ----------------------------------------------------------------------------
 406
 407 // log frame class
 408 // ---------------
 409 class wxLogFrame : public wxFrame
 410 {
 411 public:
 412     // ctor & dtor
 413     wxLogFrame(wxFrame *pParent, wxLogWindow *log, const wxChar *szTitle);
 414     virtual ~wxLogFrame();
 415
 416     // menu callbacks
 417     void OnClose(wxCommandEvent& event);
 418     void OnCloseWindow(wxCloseEvent& event);
 419 #if wxUSE_FILE
 420     void OnSave (wxCommandEvent& event);
 421 #endif // wxUSE_FILE
 422     void OnClear(wxCommandEvent& event);
 423
 424     void OnIdle(wxIdleEvent&);
 425
 426     // accessors
 427     wxTextCtrl *TextCtrl() const { return m_pTextCtrl; }
 428
 429 private:
 430     // use standard ids for our commands!
 431     enum
 432     {
 433         Menu_Close = wxID_CLOSE,
 434         Menu_Save  = wxID_SAVE,
 435         Menu_Clear = wxID_CLEAR
 436     };
 437
 438     // common part of OnClose() and OnCloseWindow()
 439     void DoClose();
 440
 441     wxTextCtrl  *m_pTextCtrl;
 442     wxLogWindow *m_log;
 443
 444     DECLARE_EVENT_TABLE()
 445 };
 446
 447 BEGIN_EVENT_TABLE(wxLogFrame, wxFrame)
 448     // wxLogWindow menu events
 449     EVT_MENU(Menu_Close, wxLogFrame::OnClose)
 450 #if wxUSE_FILE
 451     EVT_MENU(Menu_Save,  wxLogFrame::OnSave)
 452 #endif // wxUSE_FILE
 453     EVT_MENU(Menu_Clear, wxLogFrame::OnClear)
 454
 455     EVT_CLOSE(wxLogFrame::OnCloseWindow)
 456 END_EVENT_TABLE()
 457
 458 wxLogFrame::wxLogFrame(wxFrame *pParent, wxLogWindow *log, const wxChar *szTitle)
 459           : wxFrame(pParent, -1, szTitle)
 460 {
 461     m_log = log;
 462
 463     m_pTextCtrl = new wxTextCtrl(this, -1, wxEmptyString, wxDefaultPosition,
 464             wxDefaultSize,
 465             wxTE_MULTILINE  |
 466             wxHSCROLL       |
 467             // needed for Win32 to avoid 65Kb limit but it doesn't work well
 468             // when using RichEdit 2.0 which we always do in the Unicode build
 469 #if !wxUSE_UNICODE
 470             wxTE_RICH       |
 471 #endif // !wxUSE_UNICODE
 472             wxTE_READONLY);
 473
 474 #if wxUSE_MENUS
 475     // create menu
 476     wxMenuBar *pMenuBar = new wxMenuBar;
 477     wxMenu *pMenu = new wxMenu;
 478 #if wxUSE_FILE
 479     pMenu->Append(Menu_Save,  _("&Save..."), _("Save log contents to file"));
 480 #endif // wxUSE_FILE
 481     pMenu->Append(Menu_Clear, _("C&lear"), _("Clear the log contents"));
 482     pMenu->AppendSeparator();
 483     pMenu->Append(Menu_Close, _("&Close"), _("Close this window"));
 484     pMenuBar->Append(pMenu, _("&Log"));
 485     SetMenuBar(pMenuBar);
 486 #endif // wxUSE_MENUS
 487
 488 #if wxUSE_STATUSBAR
 489     // status bar for menu prompts
 490     CreateStatusBar();
 491 #endif // wxUSE_STATUSBAR
 492
 493     m_log->OnFrameCreate(this);
 494 }
 495
 496 void wxLogFrame::DoClose()
 497 {
 498     if ( m_log->OnFrameClose(this) )
 499     {
 500         // instead of closing just hide the window to be able to Show() it
 501         // later
 502         Show(FALSE);
 503     }
 504 }
 505
 506 void wxLogFrame::OnClose(wxCommandEvent& WXUNUSED(event))
 507 {
 508     DoClose();
 509 }
 510
 511 void wxLogFrame::OnCloseWindow(wxCloseEvent& WXUNUSED(event))
 512 {
 513     DoClose();
 514 }
 515
 516 #if wxUSE_FILE
 517 void wxLogFrame::OnSave(wxCommandEvent& WXUNUSED(event))
 518 {
 519 #if wxUSE_FILEDLG
 520     wxString filename;
 521     wxFile file;
 522     int rc = OpenLogFile(file, &filename);
 523     if ( rc == -1 )
 524     {
 525         // cancelled
 526         return;
 527     }
 528
 529     bool bOk = rc != 0;
 530
 531     // retrieve text and save it
 532     // -------------------------
 533     int nLines = m_pTextCtrl->GetNumberOfLines();
 534     for ( int nLine = 0; bOk && nLine < nLines; nLine++ ) {
 535         bOk = file.Write(m_pTextCtrl->GetLineText(nLine) +
 536                          wxTextFile::GetEOL());
 537     }
 538
 539     if ( bOk )
 540         bOk = file.Close();
 541
 542     if ( !bOk ) {
 543         wxLogError(_("Can't save log contents to file."));
 544     }
 545     else {
 546         wxLogStatus(this, _("Log saved to the file '%s'."), filename.c_str());
 547     }
 548 #endif
 549 }
 550 #endif // wxUSE_FILE
 551
 552 void wxLogFrame::OnClear(wxCommandEvent& WXUNUSED(event))
 553 {
 554     m_pTextCtrl->Clear();
 555 }
 556
 557 wxLogFrame::~wxLogFrame()
 558 {
 559     m_log->OnFrameDelete(this);
 560 }
 561
 562 // wxLogWindow
 563 // -----------
 564
 565 wxLogWindow::wxLogWindow(wxFrame *pParent,
 566                          const wxChar *szTitle,
 567                          bool bShow,
 568                          bool bDoPass)
 569 {
 570     PassMessages(bDoPass);
 571
 572     m_pLogFrame = new wxLogFrame(pParent, this, szTitle);
 573
 574     if ( bShow )
 575         m_pLogFrame->Show(TRUE);
 576 }
 577
 578 void wxLogWindow::Show(bool bShow)
 579 {
 580     m_pLogFrame->Show(bShow);
 581 }
 582
 583 void wxLogWindow::DoLog(wxLogLevel level, const wxChar *szString, time_t t)
 584 {
 585     // first let the previous logger show it
 586     wxLogPassThrough::DoLog(level, szString, t);
 587
 588     if ( m_pLogFrame ) {
 589         switch ( level ) {
 590             case wxLOG_Status:
 591                 // by default, these messages are ignored by wxLog, so process
 592                 // them ourselves
 593                 if ( !wxIsEmpty(szString) )
 594                 {
 595                     wxString str;
 596                     str << _("Status: ") << szString;
 597                     DoLogString(str, t);
 598                 }
 599                 break;
 600
 601                 // don't put trace messages in the text window for 2 reasons:
 602                 // 1) there are too many of them
 603                 // 2) they may provoke other trace messages thus sending a program
 604                 //    into an infinite loop
 605             case wxLOG_Trace:
 606                 break;
 607
 608             default:
 609                 // and this will format it nicely and call our DoLogString()
 610                 wxLog::DoLog(level, szString, t);
 611         }
 612     }
 613
 614     m_bHasMessages = TRUE;
 615 }
 616
 617 void wxLogWindow::DoLogString(const wxChar *szString, time_t WXUNUSED(t))
 618 {
 619     // put the text into our window
 620     wxTextCtrl *pText = m_pLogFrame->TextCtrl();
 621
 622     // remove selection (WriteText is in fact ReplaceSelection)
 623 #ifdef __WXMSW__
 624     long nLen = pText->GetLastPosition();
 625     pText->SetSelection(nLen, nLen);
 626 #endif // Windows
 627
 628     wxString msg;
 629     TimeStamp(&msg);
 630     msg << szString << wxT('\n');
 631
 632     pText->AppendText(msg);
 633
 634     // TODO ensure that the line can be seen
 635 }
 636
 637 wxFrame *wxLogWindow::GetFrame() const
 638 {
 639     return m_pLogFrame;
 640 }
 641
 642 void wxLogWindow::OnFrameCreate(wxFrame * WXUNUSED(frame))
 643 {
 644 }
 645
 646 bool wxLogWindow::OnFrameClose(wxFrame * WXUNUSED(frame))
 647 {
 648     // allow to close
 649     return TRUE;
 650 }
 651
 652 void wxLogWindow::OnFrameDelete(wxFrame * WXUNUSED(frame))
 653 {
 654     m_pLogFrame = (wxLogFrame *)NULL;
 655 }
 656
 657 wxLogWindow::~wxLogWindow()
 658 {
 659     // may be NULL if log frame already auto destroyed itself
 660     delete m_pLogFrame;
 661 }
 662
 663 // ----------------------------------------------------------------------------
 664 // wxLogDialog
 665 // ----------------------------------------------------------------------------
 666
 667 #if wxUSE_LOG_DIALOG
 668
 669 static const size_t MARGIN = 10;
 670
 671 wxString wxLogDialog::ms_details;
 672
 673 wxLogDialog::wxLogDialog(wxWindow *parent,
 674                          const wxArrayString& messages,
 675                          const wxArrayInt& severity,
 676                          const wxArrayLong& times,
 677                          const wxString& caption,
 678                          long style)
 679            : wxDialog(parent, -1, caption,
 680                       wxDefaultPosition, wxDefaultSize,
 681                       wxDEFAULT_DIALOG_STYLE | wxRESIZE_BORDER)
 682 {
 683     if ( ms_details.IsEmpty() )
 684     {
 685         // ensure that we won't loop here if wxGetTranslation()
 686         // happens to pop up a Log message while translating this :-)
 687         ms_details = wxTRANSLATE("&Details");
 688         ms_details = wxGetTranslation(ms_details);
 689     }
 690
 691     size_t count = messages.GetCount();
 692     m_messages.Alloc(count);
 693     m_severity.Alloc(count);
 694     m_times.Alloc(count);
 695
 696     for ( size_t n = 0; n < count; n++ )
 697     {
 698         wxString msg = messages[n];
 699         do
 700         {
 701             m_messages.Add(msg.BeforeFirst(_T('\n')));
 702             msg = msg.AfterFirst(_T('\n'));
 703
 704             m_severity.Add(severity[n]);
 705             m_times.Add(times[n]);
 706         }
 707         while ( !!msg );
 708     }
 709
 710     m_showingDetails = FALSE; // not initially
 711     m_listctrl = (wxListCtrl *)NULL;
 712
 713 #if wxUSE_STATLINE
 714     m_statline = (wxStaticLine *)NULL;
 715 #endif // wxUSE_STATLINE
 716
 717 #if wxUSE_FILE
 718     m_btnSave = (wxButton *)NULL;
 719 #endif // wxUSE_FILE
 720
 721     // create the controls which are always shown and layout them: we use
 722     // sizers even though our window is not resizeable to calculate the size of
 723     // the dialog properly
 724     wxBoxSizer *sizerTop = new wxBoxSizer(wxVERTICAL);
 725     wxBoxSizer *sizerButtons = new wxBoxSizer(wxVERTICAL);
 726     wxBoxSizer *sizerAll = new wxBoxSizer(wxHORIZONTAL);
 727
 728     // this "Ok" button has wxID_CANCEL id - not very logical, but this allows
 729     // to close the log dialog with <Esc> which wouldn't work otherwise (as it
 730     // translates into click on cancel button)
 731     wxButton *btnOk = new wxButton(this, wxID_CANCEL, _("OK"));
 732     sizerButtons->Add(btnOk, 0, wxCENTRE | wxBOTTOM, MARGIN/2);
 733     m_btnDetails = new wxButton(this, wxID_MORE, ms_details + _T(" >>"));
 734     sizerButtons->Add(m_btnDetails, 0, wxCENTRE | wxTOP, MARGIN/2 - 1);
 735
 736 #ifndef __WIN16__
 737     wxIcon icon = wxTheApp->GetStdIcon((int)(style & wxICON_MASK));
 738     sizerAll->Add(new wxStaticBitmap(this, -1, icon), 0);
 739 #endif // !Win16
 740
 741     const wxString& message = messages.Last();
 742     sizerAll->Add(CreateTextSizer(message), 1,
 743                   wxALIGN_CENTRE_VERTICAL | wxLEFT | wxRIGHT, MARGIN);
 744     sizerAll->Add(sizerButtons, 0, wxALIGN_RIGHT | wxLEFT, MARGIN);
 745
 746     sizerTop->Add(sizerAll, 0, wxALL | wxEXPAND, MARGIN);
 747
 748     SetAutoLayout(TRUE);
 749     SetSizer(sizerTop);
 750
 751     sizerTop->SetSizeHints(this);
 752     sizerTop->Fit(this);
 753
 754     btnOk->SetFocus();
 755
 756     // this can't happen any more as we don't use this dialog in this case
 757 #if 0
 758     if ( count == 1 )
 759     {
 760         // no details... it's easier to disable a button than to change the
 761         // dialog layout depending on whether we have details or not
 762         m_btnDetails->Disable();
 763     }
 764 #endif // 0
 765
 766     Centre();
 767 }
 768
 769 void wxLogDialog::CreateDetailsControls()
 770 {
 771     // create the save button and separator line if possible
 772 #if wxUSE_FILE
 773     m_btnSave = new wxButton(this, wxID_SAVE, _("&Save..."));
 774 #endif // wxUSE_FILE
 775
 776 #if wxUSE_STATLINE
 777     m_statline = new wxStaticLine(this, -1);
 778 #endif // wxUSE_STATLINE
 779
 780     // create the list ctrl now
 781     m_listctrl = new wxListCtrl(this, -1,
 782                                 wxDefaultPosition, wxDefaultSize,
 783                                 wxSUNKEN_BORDER |
 784                                 wxLC_REPORT |
 785                                 wxLC_NO_HEADER |
 786                                 wxLC_SINGLE_SEL);
 787
 788     // no need to translate these strings as they're not shown to the
 789     // user anyhow (we use wxLC_NO_HEADER style)
 790     m_listctrl->InsertColumn(0, _T("Message"));
 791     m_listctrl->InsertColumn(1, _T("Time"));
 792
 793     // prepare the imagelist
 794     static const int ICON_SIZE = 16;
 795     wxImageList *imageList = new wxImageList(ICON_SIZE, ICON_SIZE);
 796
 797     // order should be the same as in the switch below!
 798     static const int icons[] =
 799     {
 800         wxICON_ERROR,
 801         wxICON_EXCLAMATION,
 802         wxICON_INFORMATION
 803     };
 804
 805     bool loadedIcons = TRUE;
 806
 807 #ifndef __WIN16__
 808     for ( size_t icon = 0; icon < WXSIZEOF(icons); icon++ )
 809     {
 810         wxBitmap bmp = wxTheApp->GetStdIcon(icons[icon]);
 811
 812         // This may very well fail if there are insufficient colours available.
 813         // Degrade gracefully.
 814         if ( !bmp.Ok() )
 815         {
 816             loadedIcons = FALSE;
 817
 818             break;
 819         }
 820
 821         wxImage img(bmp);
 822         imageList->Add(img.Rescale(ICON_SIZE, ICON_SIZE).ConvertToBitmap());
 823     }
 824
 825     m_listctrl->SetImageList(imageList, wxIMAGE_LIST_SMALL);
 826 #endif // !Win16
 827
 828     // and fill it
 829     wxString fmt = wxLog::GetTimestamp();
 830     if ( !fmt )
 831     {
 832         // default format
 833         fmt = _T("%c");
 834     }
 835
 836     size_t count = m_messages.GetCount();
 837     for ( size_t n = 0; n < count; n++ )
 838     {
 839         int image;
 840
 841 #ifndef __WIN16__
 842         if ( loadedIcons )
 843         {
 844             switch ( m_severity[n] )
 845             {
 846                 case wxLOG_Error:
 847                     image = 0;
 848                     break;
 849
 850                 case wxLOG_Warning:
 851                     image = 1;
 852                     break;
 853
 854                 default:
 855                     image = 2;
 856             }
 857         }
 858         else // failed to load images
 859 #endif // !Win16
 860         {
 861             image = -1;
 862         }
 863
 864         m_listctrl->InsertItem(n, m_messages[n], image);
 865         m_listctrl->SetItem(n, 1, TimeStamp(fmt, (time_t)m_times[n]));
 866     }
 867
 868     // let the columns size themselves
 869     m_listctrl->SetColumnWidth(0, wxLIST_AUTOSIZE);
 870     m_listctrl->SetColumnWidth(1, wxLIST_AUTOSIZE);
 871
 872     // calculate an approximately nice height for the listctrl
 873     int height = GetCharHeight()*(count + 4);
 874
 875     // but check that the dialog won't fall fown from the screen
 876     //
 877     // we use GetMinHeight() to get the height of the dialog part without the
 878     // details and we consider that the "Save" button below and the separator
 879     // line (and the margins around it) take about as much, hence double it
 880     int heightMax = wxGetDisplaySize().y - GetPosition().y - 2*GetMinHeight();
 881
 882     // we should leave a margin
 883     heightMax *= 9;
 884     heightMax /= 10;
 885
 886     m_listctrl->SetSize(-1, wxMin(height, heightMax));
 887 }
 888
 889 void wxLogDialog::OnListSelect(wxListEvent& event)
 890 {
 891     // we can't just disable the control because this looks ugly under Windows
 892     // (wrong bg colour, no scrolling...), but we still want to disable
 893     // selecting items - it makes no sense here
 894     m_listctrl->SetItemState(event.GetIndex(), 0, wxLIST_STATE_SELECTED);
 895 }
 896
 897 void wxLogDialog::OnOk(wxCommandEvent& WXUNUSED(event))
 898 {
 899     EndModal(wxID_OK);
 900 }
 901
 902 #if wxUSE_FILE
 903
 904 void wxLogDialog::OnSave(wxCommandEvent& WXUNUSED(event))
 905 {
 906 #if wxUSE_FILEDLG
 907     wxFile file;
 908     int rc = OpenLogFile(file);
 909     if ( rc == -1 )
 910     {
 911         // cancelled
 912         return;
 913     }
 914
 915     bool ok = rc != 0;
 916
 917     wxString fmt = wxLog::GetTimestamp();
 918     if ( !fmt )
 919     {
 920         // default format
 921         fmt = _T("%c");
 922     }
 923
 924     size_t count = m_messages.GetCount();
 925     for ( size_t n = 0; ok && (n < count); n++ )
 926     {
 927         wxString line;
 928         line << TimeStamp(fmt, (time_t)m_times[n])
 929              << _T(": ")
 930              << m_messages[n]
 931              << wxTextFile::GetEOL();
 932
 933         ok = file.Write(line);
 934     }
 935
 936     if ( ok )
 937         ok = file.Close();
 938
 939     if ( !ok )
 940         wxLogError(_("Can't save log contents to file."));
 941 #endif // wxUSE_FILEDLG
 942 }
 943
 944 #endif // wxUSE_FILE
 945
 946 void wxLogDialog::OnDetails(wxCommandEvent& WXUNUSED(event))
 947 {
 948     wxSizer *sizer = GetSizer();
 949
 950     if ( m_showingDetails )
 951     {
 952         m_btnDetails->SetLabel(ms_details + _T(">>"));
 953
 954         sizer->Remove(m_listctrl);
 955
 956 #if wxUSE_STATLINE
 957         sizer->Remove(m_statline);
 958 #endif // wxUSE_STATLINE
 959
 960 #if wxUSE_FILE
 961         sizer->Remove(m_btnSave);
 962 #endif // wxUSE_FILE
 963     }
 964     else // show details now
 965     {
 966         m_btnDetails->SetLabel(wxString(_T("<< ")) + ms_details);
 967
 968         if ( !m_listctrl )
 969         {
 970             CreateDetailsControls();
 971         }
 972
 973 #if wxUSE_STATLINE
 974         sizer->Add(m_statline, 0, wxEXPAND | (wxALL & ~wxTOP), MARGIN);
 975 #endif // wxUSE_STATLINE
 976
 977         sizer->Add(m_listctrl, 1, wxEXPAND | (wxALL & ~wxTOP), MARGIN);
 978
 979         // VZ: this doesn't work as this becomes the initial (and not only
 980         //     minimal) listctrl height as well - why?
 981 #if 0
 982         // allow the user to make the dialog shorter than its initial height -
 983         // without this it wouldn't work as the list ctrl would have been
 984         // incompressible
 985         sizer->SetItemMinSize(m_listctrl, 100, 3*GetCharHeight());
 986 #endif // 0
 987
 988 #if wxUSE_FILE
 989         sizer->Add(m_btnSave, 0, wxALIGN_RIGHT | (wxALL & ~wxTOP), MARGIN);
 990 #endif // wxUSE_FILE
 991     }
 992
 993     m_showingDetails = !m_showingDetails;
 994
 995     // in any case, our size changed - update
 996     sizer->SetSizeHints(this);
 997     sizer->Fit(this);
 998
 999 #ifdef __WXGTK__
1000     // VS: this is neccessary in order to force frame redraw under
1001     // WindowMaker or fvwm2 (and probably other broken WMs).
1002     // Otherwise, detailed list wouldn't be displayed.
1003     Show(TRUE);
1004 #endif // wxGTK
1005 }
1006
1007 wxLogDialog::~wxLogDialog()
1008 {
1009     if ( m_listctrl )
1010     {
1011         delete m_listctrl->GetImageList(wxIMAGE_LIST_SMALL);
1012     }
1013 }
1014
1015 #endif // wxUSE_LOG_DIALOG
1016
1017 #if wxUSE_FILE && wxUSE_FILEDLG
1018
1019 // pass an uninitialized file object, the function will ask the user for the
1020 // filename and try to open it, returns TRUE on success (file was opened),
1021 // FALSE if file couldn't be opened/created and -1 if the file selection
1022 // dialog was cancelled
1023 static int OpenLogFile(wxFile& file, wxString *pFilename)
1024 {
1025     // get the file name
1026     // -----------------
1027     wxString filename = wxSaveFileSelector(wxT("log"), wxT("txt"), wxT("log.txt"));
1028     if ( !filename ) {
1029         // cancelled
1030         return -1;
1031     }
1032
1033     // open file
1034     // ---------
1035     bool bOk = FALSE;
1036     if ( wxFile::Exists(filename) ) {
1037         bool bAppend = FALSE;
1038         wxString strMsg;
1039         strMsg.Printf(_("Append log to file '%s' (choosing [No] will overwrite it)?"),
1040                       filename.c_str());
1041         switch ( wxMessageBox(strMsg, _("Question"),
1042                               wxICON_QUESTION | wxYES_NO | wxCANCEL) ) {
1043             case wxYES:
1044                 bAppend = TRUE;
1045                 break;
1046
1047             case wxNO:
1048                 bAppend = FALSE;
1049                 break;
1050
1051             case wxCANCEL:
1052                 return -1;
1053
1054             default:
1055                 wxFAIL_MSG(_("invalid message box return value"));
1056         }
1057
1058         if ( bAppend ) {
1059             bOk = file.Open(filename, wxFile::write_append);
1060         }
1061         else {
1062             bOk = file.Create(filename, TRUE /* overwrite */);
1063         }
1064     }
1065     else {
1066         bOk = file.Create(filename);
1067     }
1068
1069     if ( pFilename )
1070         *pFilename = filename;
1071
1072     return bOk;
1073 }
1074
1075 #endif // wxUSE_FILE
1076
1077 #endif // !(wxUSE_LOGGUI || wxUSE_LOGWINDOW)
1078
1079 #if wxUSE_TEXTCTRL
1080
1081 // ----------------------------------------------------------------------------
1082 // wxLogTextCtrl implementation
1083 // ----------------------------------------------------------------------------
1084
1085 wxLogTextCtrl::wxLogTextCtrl(wxTextCtrl *pTextCtrl)
1086 {
1087     m_pTextCtrl = pTextCtrl;
1088 }
1089
1090 void wxLogTextCtrl::DoLogString(const wxChar *szString, time_t WXUNUSED(t))
1091 {
1092     wxString msg;
1093     TimeStamp(&msg);
1094
1095 #if defined(__WXMAC__) && !defined(__DARWIN__)
1096     // VZ: this is a bug in wxMac, it *must* accept '\n' as new line, the
1097     //     translation must be done in wxTextCtrl, not here! (FIXME)
1098     msg << szString << wxT('\r');
1099 #else
1100     msg << szString << wxT('\n');
1101 #endif
1102
1103     m_pTextCtrl->AppendText(msg);
1104 }
1105
1106 #endif // wxUSE_TEXTCTRL
1107