src/common/utilscmn.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/common/utilscmn.cpp
   3 // Purpose:     Miscellaneous utility functions and classes
   4 // Author:      Julian Smart
   5 // Modified by:
   6 // Created:     29/01/98
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) 1998 Julian Smart
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 // ============================================================================
  13 // declarations
  14 // ============================================================================
  15
  16 // ----------------------------------------------------------------------------
  17 // headers
  18 // ----------------------------------------------------------------------------
  19
  20 // For compilers that support precompilation, includes "wx.h".
  21 #include "wx/wxprec.h"
  22
  23 #ifdef __BORLANDC__
  24     #pragma hdrstop
  25 #endif
  26
  27 #ifndef WX_PRECOMP
  28     #include "wx/app.h"
  29     #include "wx/string.h"
  30     #include "wx/utils.h"
  31     #include "wx/intl.h"
  32     #include "wx/log.h"
  33
  34     #if wxUSE_GUI
  35         #include "wx/window.h"
  36         #include "wx/frame.h"
  37         #include "wx/menu.h"
  38         #include "wx/msgdlg.h"
  39         #include "wx/textdlg.h"
  40         #include "wx/textctrl.h"    // for wxTE_PASSWORD
  41         #if wxUSE_ACCEL
  42             #include "wx/menuitem.h"
  43             #include "wx/accel.h"
  44         #endif // wxUSE_ACCEL
  45     #endif // wxUSE_GUI
  46 #endif // WX_PRECOMP
  47
  48 #include "wx/apptrait.h"
  49
  50 #include "wx/process.h"
  51 #include "wx/txtstrm.h"
  52 #include "wx/uri.h"
  53 #include "wx/mimetype.h"
  54 #include "wx/config.h"
  55
  56 #if defined(__WXWINCE__) && wxUSE_DATETIME
  57 #include "wx/datetime.h"
  58 #endif
  59
  60 #include <ctype.h>
  61 #include <stdio.h>
  62 #include <stdlib.h>
  63 #include <string.h>
  64
  65 #if !wxONLY_WATCOM_EARLIER_THAN(1,4)
  66     #if !(defined(_MSC_VER) && (_MSC_VER > 800))
  67         #include <errno.h>
  68     #endif
  69 #endif
  70
  71 #if wxUSE_GUI
  72     #include "wx/colordlg.h"
  73     #include "wx/fontdlg.h"
  74     #include "wx/notebook.h"
  75     #include "wx/statusbr.h"
  76 #endif // wxUSE_GUI
  77
  78 #ifndef __WXWINCE__
  79 #include <time.h>
  80 #else
  81 #include "wx/msw/wince/time.h"
  82 #endif
  83
  84 #ifdef __WXMAC__
  85 #include "wx/mac/private.h"
  86 #ifndef __DARWIN__
  87 #include "InternetConfig.h"
  88 #endif
  89 #endif
  90
  91 #if !defined(__MWERKS__) && !defined(__WXWINCE__)
  92     #include <sys/types.h>
  93     #include <sys/stat.h>
  94 #endif
  95
  96 #if defined(__WXMSW__)
  97     #include "wx/msw/private.h"
  98     #include "wx/msw/registry.h"
  99     #include <shellapi.h> // needed for SHELLEXECUTEINFO
 100 #endif
 101
 102 #if wxUSE_BASE
 103
 104 // ----------------------------------------------------------------------------
 105 // common data
 106 // ----------------------------------------------------------------------------
 107
 108 // ============================================================================
 109 // implementation
 110 // ============================================================================
 111
 112 #if WXWIN_COMPATIBILITY_2_4
 113
 114 wxChar *
 115 copystring (const wxChar *s)
 116 {
 117     if (s == NULL) s = wxEmptyString;
 118     size_t len = wxStrlen (s) + 1;
 119
 120     wxChar *news = new wxChar[len];
 121     memcpy (news, s, len * sizeof(wxChar));    // Should be the fastest
 122
 123     return news;
 124 }
 125
 126 #endif // WXWIN_COMPATIBILITY_2_4
 127
 128 // ----------------------------------------------------------------------------
 129 // String <-> Number conversions (deprecated)
 130 // ----------------------------------------------------------------------------
 131
 132 #if WXWIN_COMPATIBILITY_2_4
 133
 134 WXDLLIMPEXP_DATA_BASE(const wxChar *) wxFloatToStringStr = wxT("%.2f");
 135 WXDLLIMPEXP_DATA_BASE(const wxChar *) wxDoubleToStringStr = wxT("%.2f");
 136
 137 void
 138 StringToFloat (const wxChar *s, float *number)
 139 {
 140     if (s && *s && number)
 141         *number = (float) wxStrtod (s, (wxChar **) NULL);
 142 }
 143
 144 void
 145 StringToDouble (const wxChar *s, double *number)
 146 {
 147     if (s && *s && number)
 148         *number = wxStrtod (s, (wxChar **) NULL);
 149 }
 150
 151 wxChar *
 152 FloatToString (float number, const wxChar *fmt)
 153 {
 154     static wxChar buf[256];
 155
 156     wxSprintf (buf, fmt, number);
 157     return buf;
 158 }
 159
 160 wxChar *
 161 DoubleToString (double number, const wxChar *fmt)
 162 {
 163     static wxChar buf[256];
 164
 165     wxSprintf (buf, fmt, number);
 166     return buf;
 167 }
 168
 169 void
 170 StringToInt (const wxChar *s, int *number)
 171 {
 172     if (s && *s && number)
 173         *number = (int) wxStrtol (s, (wxChar **) NULL, 10);
 174 }
 175
 176 void
 177 StringToLong (const wxChar *s, long *number)
 178 {
 179     if (s && *s && number)
 180         *number = wxStrtol (s, (wxChar **) NULL, 10);
 181 }
 182
 183 wxChar *
 184 IntToString (int number)
 185 {
 186     static wxChar buf[20];
 187
 188     wxSprintf (buf, wxT("%d"), number);
 189     return buf;
 190 }
 191
 192 wxChar *
 193 LongToString (long number)
 194 {
 195     static wxChar buf[20];
 196
 197     wxSprintf (buf, wxT("%ld"), number);
 198     return buf;
 199 }
 200
 201 #endif // WXWIN_COMPATIBILITY_2_4
 202
 203 // Array used in DecToHex conversion routine.
 204 static wxChar hexArray[] = wxT("0123456789ABCDEF");
 205
 206 // Convert 2-digit hex number to decimal
 207 int wxHexToDec(const wxString& buf)
 208 {
 209     int firstDigit, secondDigit;
 210
 211     if (buf.GetChar(0) >= wxT('A'))
 212         firstDigit = buf.GetChar(0) - wxT('A') + 10;
 213     else
 214        firstDigit = buf.GetChar(0) - wxT('0');
 215
 216     if (buf.GetChar(1) >= wxT('A'))
 217         secondDigit = buf.GetChar(1) - wxT('A') + 10;
 218     else
 219         secondDigit = buf.GetChar(1) - wxT('0');
 220
 221     return (firstDigit & 0xF) * 16 + (secondDigit & 0xF );
 222 }
 223
 224 // Convert decimal integer to 2-character hex string
 225 void wxDecToHex(int dec, wxChar *buf)
 226 {
 227     int firstDigit = (int)(dec/16.0);
 228     int secondDigit = (int)(dec - (firstDigit*16.0));
 229     buf[0] = hexArray[firstDigit];
 230     buf[1] = hexArray[secondDigit];
 231     buf[2] = 0;
 232 }
 233
 234 // Convert decimal integer to 2-character hex string
 235 wxString wxDecToHex(int dec)
 236 {
 237     wxChar buf[3];
 238     wxDecToHex(dec, buf);
 239     return wxString(buf);
 240 }
 241
 242 // ----------------------------------------------------------------------------
 243 // misc functions
 244 // ----------------------------------------------------------------------------
 245
 246 // Return the current date/time
 247 wxString wxNow()
 248 {
 249 #ifdef __WXWINCE__
 250 #if wxUSE_DATETIME
 251     wxDateTime now = wxDateTime::Now();
 252     return now.Format();
 253 #else
 254     return wxEmptyString;
 255 #endif
 256 #else
 257     time_t now = time((time_t *) NULL);
 258     char *date = ctime(&now);
 259     date[24] = '\0';
 260     return wxString::FromAscii(date);
 261 #endif
 262 }
 263
 264 void wxUsleep(unsigned long milliseconds)
 265 {
 266     wxMilliSleep(milliseconds);
 267 }
 268
 269 const wxChar *wxGetInstallPrefix()
 270 {
 271     wxString prefix;
 272
 273     if ( wxGetEnv(wxT("WXPREFIX"), &prefix) )
 274         return prefix.c_str();
 275
 276 #ifdef wxINSTALL_PREFIX
 277     return wxT(wxINSTALL_PREFIX);
 278 #else
 279     return wxEmptyString;
 280 #endif
 281 }
 282
 283 wxString wxGetDataDir()
 284 {
 285     wxString dir = wxGetInstallPrefix();
 286     dir <<  wxFILE_SEP_PATH << wxT("share") << wxFILE_SEP_PATH << wxT("wx");
 287     return dir;
 288 }
 289
 290 bool wxIsPlatformLittleEndian()
 291 {
 292     // Are we little or big endian? This method is from Harbison & Steele.
 293     union
 294     {
 295         long l;
 296         char c[sizeof(long)];
 297     } u;
 298     u.l = 1;
 299
 300     return u.c[0] == 1;
 301 }
 302
 303
 304 /*
 305  * Class to make it easier to specify platform-dependent values
 306  */
 307
 308 wxArrayInt*  wxPlatform::sm_customPlatforms = NULL;
 309
 310 void wxPlatform::Copy(const wxPlatform& platform)
 311 {
 312     m_longValue = platform.m_longValue;
 313     m_doubleValue = platform.m_doubleValue;
 314     m_stringValue = platform.m_stringValue;
 315 }
 316
 317 wxPlatform wxPlatform::If(int platform, long value)
 318 {
 319     if (Is(platform))
 320         return wxPlatform(value);
 321     else
 322         return wxPlatform();
 323 }
 324
 325 wxPlatform wxPlatform::IfNot(int platform, long value)
 326 {
 327     if (!Is(platform))
 328         return wxPlatform(value);
 329     else
 330         return wxPlatform();
 331 }
 332
 333 wxPlatform& wxPlatform::ElseIf(int platform, long value)
 334 {
 335     if (Is(platform))
 336         m_longValue = value;
 337     return *this;
 338 }
 339
 340 wxPlatform& wxPlatform::ElseIfNot(int platform, long value)
 341 {
 342     if (!Is(platform))
 343         m_longValue = value;
 344     return *this;
 345 }
 346
 347 wxPlatform wxPlatform::If(int platform, double value)
 348 {
 349     if (Is(platform))
 350         return wxPlatform(value);
 351     else
 352         return wxPlatform();
 353 }
 354
 355 wxPlatform wxPlatform::IfNot(int platform, double value)
 356 {
 357     if (!Is(platform))
 358         return wxPlatform(value);
 359     else
 360         return wxPlatform();
 361 }
 362
 363 wxPlatform& wxPlatform::ElseIf(int platform, double value)
 364 {
 365     if (Is(platform))
 366         m_doubleValue = value;
 367     return *this;
 368 }
 369
 370 wxPlatform& wxPlatform::ElseIfNot(int platform, double value)
 371 {
 372     if (!Is(platform))
 373         m_doubleValue = value;
 374     return *this;
 375 }
 376
 377 wxPlatform wxPlatform::If(int platform, const wxString& value)
 378 {
 379     if (Is(platform))
 380         return wxPlatform(value);
 381     else
 382         return wxPlatform();
 383 }
 384
 385 wxPlatform wxPlatform::IfNot(int platform, const wxString& value)
 386 {
 387     if (!Is(platform))
 388         return wxPlatform(value);
 389     else
 390         return wxPlatform();
 391 }
 392
 393 wxPlatform& wxPlatform::ElseIf(int platform, const wxString& value)
 394 {
 395     if (Is(platform))
 396         m_stringValue = value;
 397     return *this;
 398 }
 399
 400 wxPlatform& wxPlatform::ElseIfNot(int platform, const wxString& value)
 401 {
 402     if (!Is(platform))
 403         m_stringValue = value;
 404     return *this;
 405 }
 406
 407 wxPlatform& wxPlatform::Else(long value)
 408 {
 409     m_longValue = value;
 410     return *this;
 411 }
 412
 413 wxPlatform& wxPlatform::Else(double value)
 414 {
 415     m_doubleValue = value;
 416     return *this;
 417 }
 418
 419 wxPlatform& wxPlatform::Else(const wxString& value)
 420 {
 421     m_stringValue = value;
 422     return *this;
 423 }
 424
 425 void wxPlatform::AddPlatform(int platform)
 426 {
 427     if (!sm_customPlatforms)
 428         sm_customPlatforms = new wxArrayInt;
 429     sm_customPlatforms->Add(platform);
 430 }
 431
 432 void wxPlatform::ClearPlatforms()
 433 {
 434     delete sm_customPlatforms;
 435     sm_customPlatforms = NULL;
 436 }
 437
 438 /// Function for testing current platform
 439
 440 bool wxPlatform::Is(int platform)
 441 {
 442 #ifdef __WXMSW__
 443     if (platform == wxOS_WINDOWS)
 444         return true;
 445 #endif
 446 #ifdef __WXWINCE__
 447     if (platform == wxOS_WINDOWS_CE)
 448         return true;
 449 #endif
 450
 451 #if 0
 452
 453 // FIXME: wxWinPocketPC and wxWinSmartPhone are unknown symbols
 454
 455 #if defined(__WXWINCE__) && defined(__POCKETPC__)
 456     if (platform == wxWinPocketPC)
 457         return true;
 458 #endif
 459 #if defined(__WXWINCE__) && defined(__SMARTPHONE__)
 460     if (platform == wxWinSmartPhone)
 461         return true;
 462 #endif
 463
 464 #endif
 465
 466 #ifdef __WXGTK__
 467     if (platform == wxPORT_GTK)
 468         return true;
 469 #endif
 470 #ifdef __WXMAC__
 471     if (platform == wxPORT_MAC)
 472         return true;
 473 #endif
 474 #ifdef __WXX11__
 475     if (platform == wxPORT_X11)
 476         return true;
 477 #endif
 478 #ifdef __UNIX__
 479     if (platform == wxOS_UNIX)
 480         return true;
 481 #endif
 482 #ifdef __WXMGL__
 483     if (platform == wxPORT_MGL)
 484         return true;
 485 #endif
 486 #ifdef __OS2__
 487     if (platform == wxOS_OS2)
 488         return true;
 489 #endif
 490 #ifdef __WXPM__
 491     if (platform == wxPORT_PM)
 492         return true;
 493 #endif
 494 #ifdef __WXCOCOA__
 495     if (platform == wxPORT_MAC)
 496         return true;
 497 #endif
 498
 499     if (sm_customPlatforms && sm_customPlatforms->Index(platform) != wxNOT_FOUND)
 500         return true;
 501
 502     return false;
 503 }
 504
 505 // ----------------------------------------------------------------------------
 506 // network and user id functions
 507 // ----------------------------------------------------------------------------
 508
 509 // Get Full RFC822 style email address
 510 bool wxGetEmailAddress(wxChar *address, int maxSize)
 511 {
 512     wxString email = wxGetEmailAddress();
 513     if ( !email )
 514         return false;
 515
 516     wxStrncpy(address, email, maxSize - 1);
 517     address[maxSize - 1] = wxT('\0');
 518
 519     return true;
 520 }
 521
 522 wxString wxGetEmailAddress()
 523 {
 524     wxString email;
 525
 526     wxString host = wxGetFullHostName();
 527     if ( !host.empty() )
 528     {
 529         wxString user = wxGetUserId();
 530         if ( !user.empty() )
 531         {
 532             email << user << wxT('@') << host;
 533         }
 534     }
 535
 536     return email;
 537 }
 538
 539 wxString wxGetUserId()
 540 {
 541     static const int maxLoginLen = 256; // FIXME arbitrary number
 542
 543     wxString buf;
 544     bool ok = wxGetUserId(wxStringBuffer(buf, maxLoginLen), maxLoginLen);
 545
 546     if ( !ok )
 547         buf.Empty();
 548
 549     return buf;
 550 }
 551
 552 wxString wxGetUserName()
 553 {
 554     static const int maxUserNameLen = 1024; // FIXME arbitrary number
 555
 556     wxString buf;
 557     bool ok = wxGetUserName(wxStringBuffer(buf, maxUserNameLen), maxUserNameLen);
 558
 559     if ( !ok )
 560         buf.Empty();
 561
 562     return buf;
 563 }
 564
 565 wxString wxGetHostName()
 566 {
 567     static const size_t hostnameSize = 257;
 568
 569     wxString buf;
 570     bool ok = wxGetHostName(wxStringBuffer(buf, hostnameSize), hostnameSize);
 571
 572     if ( !ok )
 573         buf.Empty();
 574
 575     return buf;
 576 }
 577
 578 wxString wxGetFullHostName()
 579 {
 580     static const size_t hostnameSize = 257;
 581
 582     wxString buf;
 583     bool ok = wxGetFullHostName(wxStringBuffer(buf, hostnameSize), hostnameSize);
 584
 585     if ( !ok )
 586         buf.Empty();
 587
 588     return buf;
 589 }
 590
 591 wxString wxGetHomeDir()
 592 {
 593     wxString home;
 594     wxGetHomeDir(&home);
 595
 596     return home;
 597 }
 598
 599 #if 0
 600
 601 wxString wxGetCurrentDir()
 602 {
 603     wxString dir;
 604     size_t len = 1024;
 605     bool ok;
 606     do
 607     {
 608         ok = getcwd(dir.GetWriteBuf(len + 1), len) != NULL;
 609         dir.UngetWriteBuf();
 610
 611         if ( !ok )
 612         {
 613             if ( errno != ERANGE )
 614             {
 615                 wxLogSysError(_T("Failed to get current directory"));
 616
 617                 return wxEmptyString;
 618             }
 619             else
 620             {
 621                 // buffer was too small, retry with a larger one
 622                 len *= 2;
 623             }
 624         }
 625         //else: ok
 626     } while ( !ok );
 627
 628     return dir;
 629 }
 630
 631 #endif // 0
 632
 633 // ----------------------------------------------------------------------------
 634 // wxExecute
 635 // ----------------------------------------------------------------------------
 636
 637 // wxDoExecuteWithCapture() helper: reads an entire stream into one array
 638 //
 639 // returns true if ok, false if error
 640 #if wxUSE_STREAMS
 641 static bool ReadAll(wxInputStream *is, wxArrayString& output)
 642 {
 643     wxCHECK_MSG( is, false, _T("NULL stream in wxExecute()?") );
 644
 645     // the stream could be already at EOF or in wxSTREAM_BROKEN_PIPE state
 646     is->Reset();
 647
 648     wxTextInputStream tis(*is);
 649
 650     bool cont = true;
 651     while ( cont )
 652     {
 653         wxString line = tis.ReadLine();
 654         if ( is->Eof() )
 655             break;
 656
 657         if ( !*is )
 658         {
 659             cont = false;
 660         }
 661         else
 662         {
 663             output.Add(line);
 664         }
 665     }
 666
 667     return cont;
 668 }
 669 #endif // wxUSE_STREAMS
 670
 671 // this is a private function because it hasn't a clean interface: the first
 672 // array is passed by reference, the second by pointer - instead we have 2
 673 // public versions of wxExecute() below
 674 static long wxDoExecuteWithCapture(const wxString& command,
 675                                    wxArrayString& output,
 676                                    wxArrayString* error,
 677                                    int flags)
 678 {
 679     // create a wxProcess which will capture the output
 680     wxProcess *process = new wxProcess;
 681     process->Redirect();
 682
 683     long rc = wxExecute(command, wxEXEC_SYNC | flags, process);
 684
 685 #if wxUSE_STREAMS
 686     if ( rc != -1 )
 687     {
 688         if ( !ReadAll(process->GetInputStream(), output) )
 689             rc = -1;
 690
 691         if ( error )
 692         {
 693             if ( !ReadAll(process->GetErrorStream(), *error) )
 694                 rc = -1;
 695         }
 696
 697     }
 698 #else
 699     wxUnusedVar(output);
 700     wxUnusedVar(error);
 701 #endif // wxUSE_STREAMS/!wxUSE_STREAMS
 702
 703     delete process;
 704
 705     return rc;
 706 }
 707
 708 long wxExecute(const wxString& command, wxArrayString& output, int flags)
 709 {
 710     return wxDoExecuteWithCapture(command, output, NULL, flags);
 711 }
 712
 713 long wxExecute(const wxString& command,
 714                wxArrayString& output,
 715                wxArrayString& error,
 716                int flags)
 717 {
 718     return wxDoExecuteWithCapture(command, output, &error, flags);
 719 }
 720
 721 // ----------------------------------------------------------------------------
 722 // Launch default browser
 723 // ----------------------------------------------------------------------------
 724
 725 bool wxLaunchDefaultBrowser(const wxString& urlOrig, int flags)
 726 {
 727     wxUnusedVar(flags);
 728
 729     // set the scheme of url to http if it does not have one
 730     // RR: This doesn't work if the url is just a local path
 731     wxString url(urlOrig);
 732     wxURI uri(url);
 733     if ( !uri.HasScheme() )
 734         url.Prepend(wxT("http://"));
 735
 736
 737 #if defined(__WXMSW__)
 738
 739 #if wxUSE_IPC
 740     if ( flags & wxBROWSER_NEW_WINDOW )
 741     {
 742         // ShellExecuteEx() opens the URL in an existing window by default so
 743         // we can't use it if we need a new window
 744         wxRegKey key(wxRegKey::HKCR, uri.GetScheme() + _T("\\shell\\open"));
 745         if ( !key.Exists() )
 746         {
 747             // try default browser, it must be registered at least for http URLs
 748             key.SetName(wxRegKey::HKCR, _T("http\\shell\\open"));
 749         }
 750
 751         if ( key.Exists() )
 752         {
 753             wxRegKey keyDDE(key, wxT("DDEExec"));
 754             if ( keyDDE.Exists() )
 755             {
 756                 const wxString ddeTopic = wxRegKey(keyDDE, wxT("topic"));
 757
 758                 // we only know the syntax of WWW_OpenURL DDE request for IE,
 759                 // optimistically assume that all other browsers are compatible
 760                 // with it
 761                 wxString ddeCmd;
 762                 bool ok = ddeTopic == wxT("WWW_OpenURL");
 763                 if ( ok )
 764                 {
 765                     ddeCmd = keyDDE.QueryDefaultValue();
 766                     ok = !ddeCmd.empty();
 767                 }
 768
 769                 if ( ok )
 770                 {
 771                     // for WWW_OpenURL, the index of the window to open the URL
 772                     // in is -1 (meaning "current") by default, replace it with
 773                     // 0 which means "new" (see KB article 160957)
 774                     ok = ddeCmd.Replace(wxT("-1"), wxT("0"),
 775                                         false /* only first occurence */) == 1;
 776                 }
 777
 778                 if ( ok )
 779                 {
 780                     // and also replace the parameters: the topic should
 781                     // contain a placeholder for the URL
 782                     ok = ddeCmd.Replace(wxT("%1"), url, false) == 1;
 783                 }
 784
 785                 if ( ok )
 786                 {
 787                     // try to send it the DDE request now but ignore the errors
 788                     wxLogNull noLog;
 789
 790                     const wxString ddeServer = wxRegKey(keyDDE, wxT("application"));
 791                     if ( wxExecuteDDE(ddeServer, ddeTopic, ddeCmd) )
 792                         return true;
 793
 794                     // this is not necessarily an error: maybe browser is
 795                     // simply not running, but no matter, in any case we're
 796                     // going to launch it using ShellExecuteEx() below now and
 797                     // we shouldn't try to open a new window if we open a new
 798                     // browser anyhow
 799                 }
 800             }
 801         }
 802     }
 803 #endif // wxUSE_IPC
 804
 805     WinStruct<SHELLEXECUTEINFO> sei;
 806     sei.lpFile = url.c_str();
 807     sei.lpVerb = _T("open");
 808     sei.nShow = SW_SHOWNORMAL;
 809
 810     ::ShellExecuteEx(&sei);
 811
 812     const int nResult = (int) sei.hInstApp;
 813
 814     // Firefox returns file not found for some reason, so make an exception
 815     // for it
 816     if ( nResult > 32 || nResult == SE_ERR_FNF )
 817     {
 818 #ifdef __WXDEBUG__
 819         // Log something if SE_ERR_FNF happens
 820         if ( nResult == SE_ERR_FNF )
 821             wxLogDebug(wxT("SE_ERR_FNF from ShellExecute -- maybe FireFox?"));
 822 #endif // __WXDEBUG__
 823         return true;
 824     }
 825 #elif defined(__WXMAC__)
 826     OSStatus err;
 827     ICInstance inst;
 828     long int startSel;
 829     long int endSel;
 830
 831     err = ICStart(&inst, 'STKA'); // put your app creator code here
 832     if (err == noErr)
 833     {
 834 #if !TARGET_CARBON
 835         err = ICFindConfigFile(inst, 0, NULL);
 836 #endif
 837         if (err == noErr)
 838         {
 839             ConstStr255Param hint = 0;
 840             startSel = 0;
 841             endSel = url.length();
 842             err = ICLaunchURL(inst, hint, url.fn_str(), endSel, &startSel, &endSel);
 843             if (err != noErr)
 844                 wxLogDebug(wxT("ICLaunchURL error %d"), (int) err);
 845         }
 846         ICStop(inst);
 847         return true;
 848     }
 849     else
 850     {
 851         wxLogDebug(wxT("ICStart error %d"), (int) err);
 852         return false;
 853     }
 854 #else
 855     // (non-Mac, non-MSW)
 856
 857 #ifdef __UNIX__
 858
 859     wxString desktop = wxTheApp->GetTraits()->GetDesktopEnvironment();
 860
 861     // GNOME and KDE desktops have some applications which should be always installed
 862     // together with their main parts, which give us the
 863     if (desktop == wxT("GNOME"))
 864     {
 865         wxArrayString errors;
 866         wxArrayString output;
 867
 868         // gconf will tell us the path of the application to use as browser
 869         long res = wxExecute( wxT("gconftool-2 --get /desktop/gnome/applications/browser/exec"),
 870                               output, errors, wxEXEC_NODISABLE );
 871         if (res >= 0 && errors.GetCount() == 0)
 872         {
 873             wxString cmd = output[0];
 874             cmd << _T(' ') << url;
 875             if (wxExecute(cmd))
 876                 return true;
 877         }
 878     }
 879     else if (desktop == wxT("KDE"))
 880     {
 881         // kfmclient directly opens the given URL
 882         if (wxExecute(wxT("kfmclient openURL ") + url))
 883             return true;
 884     }
 885 #endif
 886
 887     bool ok = false;
 888     wxString cmd;
 889
 890 #if wxUSE_MIMETYPE
 891     wxFileType *ft = wxTheMimeTypesManager->GetFileTypeFromExtension(_T("html"));
 892     if ( ft )
 893     {
 894         wxString mt;
 895         ft->GetMimeType(&mt);
 896
 897         ok = ft->GetOpenCommand(&cmd, wxFileType::MessageParameters(url));
 898         delete ft;
 899     }
 900 #endif // wxUSE_MIMETYPE
 901
 902     if ( !ok || cmd.empty() )
 903     {
 904         // fallback to checking for the BROWSER environment variable
 905         cmd = wxGetenv(wxT("BROWSER"));
 906         if ( !cmd.empty() )
 907             cmd << _T(' ') << url;
 908     }
 909
 910     ok = ( !cmd.empty() && wxExecute(cmd) );
 911     if (ok)
 912         return ok;
 913
 914     // no file type for HTML extension
 915     wxLogError(_T("No default application configured for HTML files."));
 916
 917 #endif // !wxUSE_MIMETYPE && !__WXMSW__
 918
 919     wxLogSysError(_T("Failed to open URL \"%s\" in default browser."),
 920                   url.c_str());
 921
 922     return false;
 923 }
 924
 925 // ----------------------------------------------------------------------------
 926 // wxApp::Yield() wrappers for backwards compatibility
 927 // ----------------------------------------------------------------------------
 928
 929 bool wxYield()
 930 {
 931     return wxTheApp && wxTheApp->Yield();
 932 }
 933
 934 bool wxYieldIfNeeded()
 935 {
 936     return wxTheApp && wxTheApp->Yield(true);
 937 }
 938
 939 #endif // wxUSE_BASE
 940
 941 // ============================================================================
 942 // GUI-only functions from now on
 943 // ============================================================================
 944
 945 #if wxUSE_GUI
 946
 947 // Id generation
 948 static long wxCurrentId = 100;
 949
 950 long wxNewId()
 951 {
 952     // skip the part of IDs space that contains hard-coded values:
 953     if (wxCurrentId == wxID_LOWEST)
 954         wxCurrentId = wxID_HIGHEST + 1;
 955
 956     return wxCurrentId++;
 957 }
 958
 959 long
 960 wxGetCurrentId(void) { return wxCurrentId; }
 961
 962 void
 963 wxRegisterId (long id)
 964 {
 965   if (id >= wxCurrentId)
 966     wxCurrentId = id + 1;
 967 }
 968
 969 // ----------------------------------------------------------------------------
 970 // Menu accelerators related functions
 971 // ----------------------------------------------------------------------------
 972
 973 wxChar *wxStripMenuCodes(const wxChar *in, wxChar *out)
 974 {
 975 #if wxUSE_MENUS
 976     wxString s = wxMenuItem::GetLabelFromText(in);
 977 #else
 978     wxString str(in);
 979     wxString s = wxStripMenuCodes(str);
 980 #endif // wxUSE_MENUS
 981     if ( out )
 982     {
 983         // go smash their buffer if it's not big enough - I love char * params
 984         memcpy(out, s.c_str(), s.length() * sizeof(wxChar));
 985     }
 986     else
 987     {
 988         // MYcopystring - for easier search...
 989         out = new wxChar[s.length() + 1];
 990         wxStrcpy(out, s.c_str());
 991     }
 992
 993     return out;
 994 }
 995
 996 wxString wxStripMenuCodes(const wxString& in, int flags)
 997 {
 998     wxASSERT_MSG( flags, _T("this is useless to call without any flags") );
 999
1000     wxString out;
1001
1002     size_t len = in.length();
1003     out.reserve(len);
1004
1005     for ( size_t n = 0; n < len; n++ )
1006     {
1007         wxChar ch = in[n];
1008         if ( (flags & wxStrip_Mnemonics) && ch == _T('&') )
1009         {
1010             // skip it, it is used to introduce the accel char (or to quote
1011             // itself in which case it should still be skipped): note that it
1012             // can't be the last character of the string
1013             if ( ++n == len )
1014             {
1015                 wxLogDebug(_T("Invalid menu string '%s'"), in.c_str());
1016             }
1017             else
1018             {
1019                 // use the next char instead
1020                 ch = in[n];
1021             }
1022         }
1023         else if ( (flags & wxStrip_Accel) && ch == _T('\t') )
1024         {
1025             // everything after TAB is accel string, exit the loop
1026             break;
1027         }
1028
1029         out += ch;
1030     }
1031
1032     return out;
1033 }
1034
1035 // ----------------------------------------------------------------------------
1036 // Window search functions
1037 // ----------------------------------------------------------------------------
1038
1039 /*
1040  * If parent is non-NULL, look through children for a label or title
1041  * matching the specified string. If NULL, look through all top-level windows.
1042  *
1043  */
1044
1045 wxWindow *
1046 wxFindWindowByLabel (const wxString& title, wxWindow * parent)
1047 {
1048     return wxWindow::FindWindowByLabel( title, parent );
1049 }
1050
1051
1052 /*
1053  * If parent is non-NULL, look through children for a name
1054  * matching the specified string. If NULL, look through all top-level windows.
1055  *
1056  */
1057
1058 wxWindow *
1059 wxFindWindowByName (const wxString& name, wxWindow * parent)
1060 {
1061     return wxWindow::FindWindowByName( name, parent );
1062 }
1063
1064 // Returns menu item id or wxNOT_FOUND if none.
1065 int
1066 wxFindMenuItemId (wxFrame * frame, const wxString& menuString, const wxString& itemString)
1067 {
1068 #if wxUSE_MENUS
1069     wxMenuBar *menuBar = frame->GetMenuBar ();
1070     if ( menuBar )
1071         return menuBar->FindMenuItem (menuString, itemString);
1072 #endif // wxUSE_MENUS
1073
1074     return wxNOT_FOUND;
1075 }
1076
1077 // Try to find the deepest child that contains 'pt'.
1078 // We go backwards, to try to allow for controls that are spacially
1079 // within other controls, but are still siblings (e.g. buttons within
1080 // static boxes). Static boxes are likely to be created _before_ controls
1081 // that sit inside them.
1082 wxWindow* wxFindWindowAtPoint(wxWindow* win, const wxPoint& pt)
1083 {
1084     if (!win->IsShown())
1085         return NULL;
1086
1087     // Hack for wxNotebook case: at least in wxGTK, all pages
1088     // claim to be shown, so we must only deal with the selected one.
1089 #if wxUSE_NOTEBOOK
1090     if (win->IsKindOf(CLASSINFO(wxNotebook)))
1091     {
1092       wxNotebook* nb = (wxNotebook*) win;
1093       int sel = nb->GetSelection();
1094       if (sel >= 0)
1095       {
1096         wxWindow* child = nb->GetPage(sel);
1097         wxWindow* foundWin = wxFindWindowAtPoint(child, pt);
1098         if (foundWin)
1099            return foundWin;
1100       }
1101     }
1102 #endif
1103
1104     wxWindowList::compatibility_iterator node = win->GetChildren().GetLast();
1105     while (node)
1106     {
1107         wxWindow* child = node->GetData();
1108         wxWindow* foundWin = wxFindWindowAtPoint(child, pt);
1109         if (foundWin)
1110           return foundWin;
1111         node = node->GetPrevious();
1112     }
1113
1114     wxPoint pos = win->GetPosition();
1115     wxSize sz = win->GetSize();
1116     if ( !win->IsTopLevel() && win->GetParent() )
1117     {
1118         pos = win->GetParent()->ClientToScreen(pos);
1119     }
1120
1121     wxRect rect(pos, sz);
1122     if (rect.Contains(pt))
1123         return win;
1124
1125     return NULL;
1126 }
1127
1128 wxWindow* wxGenericFindWindowAtPoint(const wxPoint& pt)
1129 {
1130     // Go backwards through the list since windows
1131     // on top are likely to have been appended most
1132     // recently.
1133     wxWindowList::compatibility_iterator node = wxTopLevelWindows.GetLast();
1134     while (node)
1135     {
1136         wxWindow* win = node->GetData();
1137         wxWindow* found = wxFindWindowAtPoint(win, pt);
1138         if (found)
1139             return found;
1140         node = node->GetPrevious();
1141     }
1142     return NULL;
1143 }
1144
1145 // ----------------------------------------------------------------------------
1146 // GUI helpers
1147 // ----------------------------------------------------------------------------
1148
1149 /*
1150  * N.B. these convenience functions must be separate from msgdlgg.cpp, textdlgg.cpp
1151  * since otherwise the generic code may be pulled in unnecessarily.
1152  */
1153
1154 #if wxUSE_MSGDLG
1155
1156 int wxMessageBox(const wxString& message, const wxString& caption, long style,
1157                  wxWindow *parent, int WXUNUSED(x), int WXUNUSED(y) )
1158 {
1159     long decorated_style = style;
1160
1161     if ( ( style & ( wxICON_EXCLAMATION | wxICON_HAND | wxICON_INFORMATION | wxICON_QUESTION ) ) == 0 )
1162     {
1163         decorated_style |= ( style & wxYES ) ? wxICON_QUESTION : wxICON_INFORMATION ;
1164     }
1165
1166     wxMessageDialog dialog(parent, message, caption, decorated_style);
1167
1168     int ans = dialog.ShowModal();
1169     switch ( ans )
1170     {
1171         case wxID_OK:
1172             return wxOK;
1173         case wxID_YES:
1174             return wxYES;
1175         case wxID_NO:
1176             return wxNO;
1177         case wxID_CANCEL:
1178             return wxCANCEL;
1179     }
1180
1181     wxFAIL_MSG( _T("unexpected return code from wxMessageDialog") );
1182
1183     return wxCANCEL;
1184 }
1185
1186 #endif // wxUSE_MSGDLG
1187
1188 #if wxUSE_TEXTDLG
1189
1190 wxString wxGetTextFromUser(const wxString& message, const wxString& caption,
1191                         const wxString& defaultValue, wxWindow *parent,
1192                         wxCoord x, wxCoord y, bool centre )
1193 {
1194     wxString str;
1195     long style = wxTextEntryDialogStyle;
1196
1197     if (centre)
1198         style |= wxCENTRE;
1199     else
1200         style &= ~wxCENTRE;
1201
1202     wxTextEntryDialog dialog(parent, message, caption, defaultValue, style, wxPoint(x, y));
1203
1204     if (dialog.ShowModal() == wxID_OK)
1205     {
1206         str = dialog.GetValue();
1207     }
1208
1209     return str;
1210 }
1211
1212 wxString wxGetPasswordFromUser(const wxString& message,
1213                                const wxString& caption,
1214                                const wxString& defaultValue,
1215                                wxWindow *parent,
1216                                wxCoord x, wxCoord y, bool centre )
1217 {
1218     wxString str;
1219     long style = wxTextEntryDialogStyle;
1220
1221     if (centre)
1222         style |= wxCENTRE;
1223     else
1224         style &= ~wxCENTRE;
1225
1226     wxPasswordEntryDialog dialog(parent, message, caption, defaultValue,
1227                              style, wxPoint(x, y));
1228     if ( dialog.ShowModal() == wxID_OK )
1229     {
1230         str = dialog.GetValue();
1231     }
1232
1233     return str;
1234 }
1235
1236 #endif // wxUSE_TEXTDLG
1237
1238 #if wxUSE_COLOURDLG
1239
1240 wxColour wxGetColourFromUser(wxWindow *parent, const wxColour& colInit, const wxString& caption)
1241 {
1242     wxColourData data;
1243     data.SetChooseFull(true);
1244     if ( colInit.Ok() )
1245     {
1246         data.SetColour((wxColour &)colInit); // const_cast
1247     }
1248
1249     wxColour colRet;
1250     wxColourDialog dialog(parent, &data);
1251     if (!caption.empty())
1252         dialog.SetTitle(caption);
1253     if ( dialog.ShowModal() == wxID_OK )
1254     {
1255         colRet = dialog.GetColourData().GetColour();
1256     }
1257     //else: leave it invalid
1258
1259     return colRet;
1260 }
1261
1262 #endif // wxUSE_COLOURDLG
1263
1264 #if wxUSE_FONTDLG
1265
1266 wxFont wxGetFontFromUser(wxWindow *parent, const wxFont& fontInit, const wxString& caption)
1267 {
1268     wxFontData data;
1269     if ( fontInit.Ok() )
1270     {
1271         data.SetInitialFont(fontInit);
1272     }
1273
1274     wxFont fontRet;
1275     wxFontDialog dialog(parent, data);
1276     if (!caption.empty())
1277         dialog.SetTitle(caption);
1278     if ( dialog.ShowModal() == wxID_OK )
1279     {
1280         fontRet = dialog.GetFontData().GetChosenFont();
1281     }
1282     //else: leave it invalid
1283
1284     return fontRet;
1285 }
1286
1287 #endif // wxUSE_FONTDLG
1288
1289 // ----------------------------------------------------------------------------
1290 // wxSafeYield and supporting functions
1291 // ----------------------------------------------------------------------------
1292
1293 void wxEnableTopLevelWindows(bool enable)
1294 {
1295     wxWindowList::compatibility_iterator node;
1296     for ( node = wxTopLevelWindows.GetFirst(); node; node = node->GetNext() )
1297         node->GetData()->Enable(enable);
1298 }
1299
1300 wxWindowDisabler::wxWindowDisabler(wxWindow *winToSkip)
1301 {
1302     // remember the top level windows which were already disabled, so that we
1303     // don't reenable them later
1304     m_winDisabled = NULL;
1305
1306     wxWindowList::compatibility_iterator node;
1307     for ( node = wxTopLevelWindows.GetFirst(); node; node = node->GetNext() )
1308     {
1309         wxWindow *winTop = node->GetData();
1310         if ( winTop == winToSkip )
1311             continue;
1312
1313         // we don't need to disable the hidden or already disabled windows
1314         if ( winTop->IsEnabled() && winTop->IsShown() )
1315         {
1316             winTop->Disable();
1317         }
1318         else
1319         {
1320             if ( !m_winDisabled )
1321             {
1322                 m_winDisabled = new wxWindowList;
1323             }
1324
1325             m_winDisabled->Append(winTop);
1326         }
1327     }
1328 }
1329
1330 wxWindowDisabler::~wxWindowDisabler()
1331 {
1332     wxWindowList::compatibility_iterator node;
1333     for ( node = wxTopLevelWindows.GetFirst(); node; node = node->GetNext() )
1334     {
1335         wxWindow *winTop = node->GetData();
1336         if ( !m_winDisabled || !m_winDisabled->Find(winTop) )
1337         {
1338             winTop->Enable();
1339         }
1340         //else: had been already disabled, don't reenable
1341     }
1342
1343     delete m_winDisabled;
1344 }
1345
1346 // Yield to other apps/messages and disable user input to all windows except
1347 // the given one
1348 bool wxSafeYield(wxWindow *win, bool onlyIfNeeded)
1349 {
1350     wxWindowDisabler wd(win);
1351
1352     bool rc;
1353     if (onlyIfNeeded)
1354         rc = wxYieldIfNeeded();
1355     else
1356         rc = wxYield();
1357
1358     return rc;
1359 }
1360
1361 // Don't synthesize KeyUp events holding down a key and producing KeyDown
1362 // events with autorepeat. On by default and always on in wxMSW. wxGTK version
1363 // in utilsgtk.cpp.
1364 #ifndef __WXGTK__
1365 bool wxSetDetectableAutoRepeat( bool WXUNUSED(flag) )
1366 {
1367     return true;    // detectable auto-repeat is the only mode MSW supports
1368 }
1369 #endif // !wxGTK
1370
1371 #endif // wxUSE_GUI