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     if ( !wxURI(url).HasScheme() )
 733         url.Prepend(wxT("http://"));
 734
 735
 736 #if defined(__WXMSW__)
 737
 738 #if wxUSE_IPC
 739     if ( flags & wxBROWSER_NEW_WINDOW )
 740     {
 741         // ShellExecuteEx() opens the URL in an existing window by default so
 742         // we can't use it if we need a new window
 743         wxRegKey key(wxRegKey::HKCR, url.BeforeFirst(':') + _T("\\shell\\open"));
 744         if ( key.Exists() )
 745         {
 746             wxRegKey keyDDE(key, wxT("DDEExec"));
 747             if ( keyDDE.Exists() )
 748             {
 749                 const wxString ddeTopic = wxRegKey(keyDDE, wxT("topic"));
 750
 751                 // we only know the syntax of WWW_OpenURL DDE request for IE,
 752                 // optimistically assume that all other browsers are compatible
 753                 // with it
 754                 wxString ddeCmd;
 755                 bool ok = ddeTopic == wxT("WWW_OpenURL");
 756                 if ( ok )
 757                 {
 758                     ddeCmd = keyDDE.QueryDefaultValue();
 759                     ok = !ddeCmd.empty();
 760                 }
 761
 762                 if ( ok )
 763                 {
 764                     // for WWW_OpenURL, the index of the window to open the URL
 765                     // in is -1 (meaning "current") by default, replace it with
 766                     // 0 which means "new" (see KB article 160957)
 767                     ok = ddeCmd.Replace(wxT("-1"), wxT("0"),
 768                                         false /* only first occurence */) == 1;
 769                 }
 770
 771                 if ( ok )
 772                 {
 773                     // and also replace the parameters: the topic should
 774                     // contain a placeholder for the URL
 775                     ok = ddeCmd.Replace(wxT("%1"), url, false) == 1;
 776                 }
 777
 778                 if ( ok )
 779                 {
 780                     // try to send it the DDE request now but ignore the errors
 781                     wxLogNull noLog;
 782
 783                     const wxString ddeServer = wxRegKey(keyDDE, wxT("application"));
 784                     if ( wxExecuteDDE(ddeServer, ddeTopic, ddeCmd) )
 785                         return true;
 786
 787                     // this is not necessarily an error: maybe browser is
 788                     // simply not running, but no matter, in any case we're
 789                     // going to launch it using ShellExecuteEx() below now and
 790                     // we shouldn't try to open a new window if we open a new
 791                     // browser anyhow
 792                 }
 793             }
 794         }
 795     }
 796 #endif // wxUSE_IPC
 797
 798     WinStruct<SHELLEXECUTEINFO> sei;
 799     sei.lpFile = url.c_str();
 800     sei.lpVerb = _T("open");
 801     sei.nShow = SW_SHOWNORMAL;
 802
 803     ::ShellExecuteEx(&sei);
 804
 805     const int nResult = (int) sei.hInstApp;
 806
 807     // Firefox returns file not found for some reason, so make an exception
 808     // for it
 809     if ( nResult > 32 || nResult == SE_ERR_FNF )
 810     {
 811 #ifdef __WXDEBUG__
 812         // Log something if SE_ERR_FNF happens
 813         if ( nResult == SE_ERR_FNF )
 814             wxLogDebug(wxT("SE_ERR_FNF from ShellExecute -- maybe FireFox?"));
 815 #endif // __WXDEBUG__
 816         return true;
 817     }
 818 #elif defined(__WXMAC__)
 819     OSStatus err;
 820     ICInstance inst;
 821     long int startSel;
 822     long int endSel;
 823
 824     err = ICStart(&inst, 'STKA'); // put your app creator code here
 825     if (err == noErr)
 826     {
 827 #if !TARGET_CARBON
 828         err = ICFindConfigFile(inst, 0, NULL);
 829 #endif
 830         if (err == noErr)
 831         {
 832             ConstStr255Param hint = 0;
 833             startSel = 0;
 834             endSel = url.length();
 835             err = ICLaunchURL(inst, hint, url.fn_str(), endSel, &startSel, &endSel);
 836             if (err != noErr)
 837                 wxLogDebug(wxT("ICLaunchURL error %d"), (int) err);
 838         }
 839         ICStop(inst);
 840         return true;
 841     }
 842     else
 843     {
 844         wxLogDebug(wxT("ICStart error %d"), (int) err);
 845         return false;
 846     }
 847 #else
 848     // (non-Mac, non-MSW)
 849
 850 #ifdef __UNIX__
 851     if (wxTheApp->GetTraits()->GetDesktopEnvironment() == wxT("GNOME"))
 852     {
 853         wxArrayString errors;
 854         wxArrayString output;
 855         long res = wxExecute( wxT("gconftool-2 --get /desktop/gnome/applications/browser/exec"), output, errors, wxEXEC_NODISABLE );
 856         if (res >= 0 && errors.GetCount() == 0)
 857         {
 858             wxString cmd = output[0];
 859             cmd << _T(' ') << url;
 860             if (wxExecute(cmd))
 861                 return true;
 862         }
 863     }
 864 #endif
 865
 866     bool ok = false;
 867     wxString cmd;
 868
 869     wxFileType *ft = wxTheMimeTypesManager->GetFileTypeFromExtension(_T("html"));
 870     if ( ft )
 871     {
 872         wxString mt;
 873         ft->GetMimeType(&mt);
 874
 875         ok = ft->GetOpenCommand(&cmd, wxFileType::MessageParameters(url));
 876         delete ft;
 877     }
 878
 879     if ( !ok || cmd.empty() )
 880     {
 881         // fallback to checking for the BROWSER environment variable
 882         cmd = wxGetenv(wxT("BROWSER"));
 883         if ( !cmd.empty() )
 884             cmd << _T(' ') << url;
 885     }
 886
 887     ok = ( !cmd.empty() && wxExecute(cmd) );
 888     if (ok)
 889         return ok;
 890
 891     // no file type for HTML extension
 892     wxLogError(_T("No default application configured for HTML files."));
 893
 894 #endif // !wxUSE_MIMETYPE && !__WXMSW__
 895
 896     wxLogSysError(_T("Failed to open URL \"%s\" in default browser."),
 897                   url.c_str());
 898
 899     return false;
 900 }
 901
 902 // ----------------------------------------------------------------------------
 903 // wxApp::Yield() wrappers for backwards compatibility
 904 // ----------------------------------------------------------------------------
 905
 906 bool wxYield()
 907 {
 908     return wxTheApp && wxTheApp->Yield();
 909 }
 910
 911 bool wxYieldIfNeeded()
 912 {
 913     return wxTheApp && wxTheApp->Yield(true);
 914 }
 915
 916 #endif // wxUSE_BASE
 917
 918 // ============================================================================
 919 // GUI-only functions from now on
 920 // ============================================================================
 921
 922 #if wxUSE_GUI
 923
 924 // Id generation
 925 static long wxCurrentId = 100;
 926
 927 long wxNewId()
 928 {
 929     // skip the part of IDs space that contains hard-coded values:
 930     if (wxCurrentId == wxID_LOWEST)
 931         wxCurrentId = wxID_HIGHEST + 1;
 932
 933     return wxCurrentId++;
 934 }
 935
 936 long
 937 wxGetCurrentId(void) { return wxCurrentId; }
 938
 939 void
 940 wxRegisterId (long id)
 941 {
 942   if (id >= wxCurrentId)
 943     wxCurrentId = id + 1;
 944 }
 945
 946 // ----------------------------------------------------------------------------
 947 // Menu accelerators related functions
 948 // ----------------------------------------------------------------------------
 949
 950 wxChar *wxStripMenuCodes(const wxChar *in, wxChar *out)
 951 {
 952 #if wxUSE_MENUS
 953     wxString s = wxMenuItem::GetLabelFromText(in);
 954 #else
 955     wxString str(in);
 956     wxString s = wxStripMenuCodes(str);
 957 #endif // wxUSE_MENUS
 958     if ( out )
 959     {
 960         // go smash their buffer if it's not big enough - I love char * params
 961         memcpy(out, s.c_str(), s.length() * sizeof(wxChar));
 962     }
 963     else
 964     {
 965         // MYcopystring - for easier search...
 966         out = new wxChar[s.length() + 1];
 967         wxStrcpy(out, s.c_str());
 968     }
 969
 970     return out;
 971 }
 972
 973 wxString wxStripMenuCodes(const wxString& in, int flags)
 974 {
 975     wxASSERT_MSG( flags, _T("this is useless to call without any flags") );
 976
 977     wxString out;
 978
 979     size_t len = in.length();
 980     out.reserve(len);
 981
 982     for ( size_t n = 0; n < len; n++ )
 983     {
 984         wxChar ch = in[n];
 985         if ( (flags & wxStrip_Mnemonics) && ch == _T('&') )
 986         {
 987             // skip it, it is used to introduce the accel char (or to quote
 988             // itself in which case it should still be skipped): note that it
 989             // can't be the last character of the string
 990             if ( ++n == len )
 991             {
 992                 wxLogDebug(_T("Invalid menu string '%s'"), in.c_str());
 993             }
 994             else
 995             {
 996                 // use the next char instead
 997                 ch = in[n];
 998             }
 999         }
1000         else if ( (flags & wxStrip_Accel) && ch == _T('\t') )
1001         {
1002             // everything after TAB is accel string, exit the loop
1003             break;
1004         }
1005
1006         out += ch;
1007     }
1008
1009     return out;
1010 }
1011
1012 // ----------------------------------------------------------------------------
1013 // Window search functions
1014 // ----------------------------------------------------------------------------
1015
1016 /*
1017  * If parent is non-NULL, look through children for a label or title
1018  * matching the specified string. If NULL, look through all top-level windows.
1019  *
1020  */
1021
1022 wxWindow *
1023 wxFindWindowByLabel (const wxString& title, wxWindow * parent)
1024 {
1025     return wxWindow::FindWindowByLabel( title, parent );
1026 }
1027
1028
1029 /*
1030  * If parent is non-NULL, look through children for a name
1031  * matching the specified string. If NULL, look through all top-level windows.
1032  *
1033  */
1034
1035 wxWindow *
1036 wxFindWindowByName (const wxString& name, wxWindow * parent)
1037 {
1038     return wxWindow::FindWindowByName( name, parent );
1039 }
1040
1041 // Returns menu item id or wxNOT_FOUND if none.
1042 int
1043 wxFindMenuItemId (wxFrame * frame, const wxString& menuString, const wxString& itemString)
1044 {
1045 #if wxUSE_MENUS
1046     wxMenuBar *menuBar = frame->GetMenuBar ();
1047     if ( menuBar )
1048         return menuBar->FindMenuItem (menuString, itemString);
1049 #endif // wxUSE_MENUS
1050
1051     return wxNOT_FOUND;
1052 }
1053
1054 // Try to find the deepest child that contains 'pt'.
1055 // We go backwards, to try to allow for controls that are spacially
1056 // within other controls, but are still siblings (e.g. buttons within
1057 // static boxes). Static boxes are likely to be created _before_ controls
1058 // that sit inside them.
1059 wxWindow* wxFindWindowAtPoint(wxWindow* win, const wxPoint& pt)
1060 {
1061     if (!win->IsShown())
1062         return NULL;
1063
1064     // Hack for wxNotebook case: at least in wxGTK, all pages
1065     // claim to be shown, so we must only deal with the selected one.
1066 #if wxUSE_NOTEBOOK
1067     if (win->IsKindOf(CLASSINFO(wxNotebook)))
1068     {
1069       wxNotebook* nb = (wxNotebook*) win;
1070       int sel = nb->GetSelection();
1071       if (sel >= 0)
1072       {
1073         wxWindow* child = nb->GetPage(sel);
1074         wxWindow* foundWin = wxFindWindowAtPoint(child, pt);
1075         if (foundWin)
1076            return foundWin;
1077       }
1078     }
1079 #endif
1080
1081     wxWindowList::compatibility_iterator node = win->GetChildren().GetLast();
1082     while (node)
1083     {
1084         wxWindow* child = node->GetData();
1085         wxWindow* foundWin = wxFindWindowAtPoint(child, pt);
1086         if (foundWin)
1087           return foundWin;
1088         node = node->GetPrevious();
1089     }
1090
1091     wxPoint pos = win->GetPosition();
1092     wxSize sz = win->GetSize();
1093     if ( !win->IsTopLevel() && win->GetParent() )
1094     {
1095         pos = win->GetParent()->ClientToScreen(pos);
1096     }
1097
1098     wxRect rect(pos, sz);
1099     if (rect.Contains(pt))
1100         return win;
1101
1102     return NULL;
1103 }
1104
1105 wxWindow* wxGenericFindWindowAtPoint(const wxPoint& pt)
1106 {
1107     // Go backwards through the list since windows
1108     // on top are likely to have been appended most
1109     // recently.
1110     wxWindowList::compatibility_iterator node = wxTopLevelWindows.GetLast();
1111     while (node)
1112     {
1113         wxWindow* win = node->GetData();
1114         wxWindow* found = wxFindWindowAtPoint(win, pt);
1115         if (found)
1116             return found;
1117         node = node->GetPrevious();
1118     }
1119     return NULL;
1120 }
1121
1122 // ----------------------------------------------------------------------------
1123 // GUI helpers
1124 // ----------------------------------------------------------------------------
1125
1126 /*
1127  * N.B. these convenience functions must be separate from msgdlgg.cpp, textdlgg.cpp
1128  * since otherwise the generic code may be pulled in unnecessarily.
1129  */
1130
1131 #if wxUSE_MSGDLG
1132
1133 int wxMessageBox(const wxString& message, const wxString& caption, long style,
1134                  wxWindow *parent, int WXUNUSED(x), int WXUNUSED(y) )
1135 {
1136     long decorated_style = style;
1137
1138     if ( ( style & ( wxICON_EXCLAMATION | wxICON_HAND | wxICON_INFORMATION | wxICON_QUESTION ) ) == 0 )
1139     {
1140         decorated_style |= ( style & wxYES ) ? wxICON_QUESTION : wxICON_INFORMATION ;
1141     }
1142
1143     wxMessageDialog dialog(parent, message, caption, decorated_style);
1144
1145     int ans = dialog.ShowModal();
1146     switch ( ans )
1147     {
1148         case wxID_OK:
1149             return wxOK;
1150         case wxID_YES:
1151             return wxYES;
1152         case wxID_NO:
1153             return wxNO;
1154         case wxID_CANCEL:
1155             return wxCANCEL;
1156     }
1157
1158     wxFAIL_MSG( _T("unexpected return code from wxMessageDialog") );
1159
1160     return wxCANCEL;
1161 }
1162
1163 #endif // wxUSE_MSGDLG
1164
1165 #if wxUSE_TEXTDLG
1166
1167 wxString wxGetTextFromUser(const wxString& message, const wxString& caption,
1168                         const wxString& defaultValue, wxWindow *parent,
1169                         wxCoord x, wxCoord y, bool centre )
1170 {
1171     wxString str;
1172     long style = wxTextEntryDialogStyle;
1173
1174     if (centre)
1175         style |= wxCENTRE;
1176     else
1177         style &= ~wxCENTRE;
1178
1179     wxTextEntryDialog dialog(parent, message, caption, defaultValue, style, wxPoint(x, y));
1180
1181     if (dialog.ShowModal() == wxID_OK)
1182     {
1183         str = dialog.GetValue();
1184     }
1185
1186     return str;
1187 }
1188
1189 wxString wxGetPasswordFromUser(const wxString& message,
1190                                const wxString& caption,
1191                                const wxString& defaultValue,
1192                                wxWindow *parent,
1193                                wxCoord x, wxCoord y, bool centre )
1194 {
1195     wxString str;
1196     long style = wxTextEntryDialogStyle;
1197
1198     if (centre)
1199         style |= wxCENTRE;
1200     else
1201         style &= ~wxCENTRE;
1202
1203     wxPasswordEntryDialog dialog(parent, message, caption, defaultValue,
1204                              style, wxPoint(x, y));
1205     if ( dialog.ShowModal() == wxID_OK )
1206     {
1207         str = dialog.GetValue();
1208     }
1209
1210     return str;
1211 }
1212
1213 #endif // wxUSE_TEXTDLG
1214
1215 #if wxUSE_COLOURDLG
1216
1217 wxColour wxGetColourFromUser(wxWindow *parent, const wxColour& colInit, const wxString& caption)
1218 {
1219     wxColourData data;
1220     data.SetChooseFull(true);
1221     if ( colInit.Ok() )
1222     {
1223         data.SetColour((wxColour &)colInit); // const_cast
1224     }
1225
1226     wxColour colRet;
1227     wxColourDialog dialog(parent, &data);
1228     if (!caption.empty())
1229         dialog.SetTitle(caption);
1230     if ( dialog.ShowModal() == wxID_OK )
1231     {
1232         colRet = dialog.GetColourData().GetColour();
1233     }
1234     //else: leave it invalid
1235
1236     return colRet;
1237 }
1238
1239 #endif // wxUSE_COLOURDLG
1240
1241 #if wxUSE_FONTDLG
1242
1243 wxFont wxGetFontFromUser(wxWindow *parent, const wxFont& fontInit, const wxString& caption)
1244 {
1245     wxFontData data;
1246     if ( fontInit.Ok() )
1247     {
1248         data.SetInitialFont(fontInit);
1249     }
1250
1251     wxFont fontRet;
1252     wxFontDialog dialog(parent, data);
1253     if (!caption.empty())
1254         dialog.SetTitle(caption);
1255     if ( dialog.ShowModal() == wxID_OK )
1256     {
1257         fontRet = dialog.GetFontData().GetChosenFont();
1258     }
1259     //else: leave it invalid
1260
1261     return fontRet;
1262 }
1263
1264 #endif // wxUSE_FONTDLG
1265
1266 // ----------------------------------------------------------------------------
1267 // wxSafeYield and supporting functions
1268 // ----------------------------------------------------------------------------
1269
1270 void wxEnableTopLevelWindows(bool enable)
1271 {
1272     wxWindowList::compatibility_iterator node;
1273     for ( node = wxTopLevelWindows.GetFirst(); node; node = node->GetNext() )
1274         node->GetData()->Enable(enable);
1275 }
1276
1277 wxWindowDisabler::wxWindowDisabler(wxWindow *winToSkip)
1278 {
1279     // remember the top level windows which were already disabled, so that we
1280     // don't reenable them later
1281     m_winDisabled = NULL;
1282
1283     wxWindowList::compatibility_iterator node;
1284     for ( node = wxTopLevelWindows.GetFirst(); node; node = node->GetNext() )
1285     {
1286         wxWindow *winTop = node->GetData();
1287         if ( winTop == winToSkip )
1288             continue;
1289
1290         // we don't need to disable the hidden or already disabled windows
1291         if ( winTop->IsEnabled() && winTop->IsShown() )
1292         {
1293             winTop->Disable();
1294         }
1295         else
1296         {
1297             if ( !m_winDisabled )
1298             {
1299                 m_winDisabled = new wxWindowList;
1300             }
1301
1302             m_winDisabled->Append(winTop);
1303         }
1304     }
1305 }
1306
1307 wxWindowDisabler::~wxWindowDisabler()
1308 {
1309     wxWindowList::compatibility_iterator node;
1310     for ( node = wxTopLevelWindows.GetFirst(); node; node = node->GetNext() )
1311     {
1312         wxWindow *winTop = node->GetData();
1313         if ( !m_winDisabled || !m_winDisabled->Find(winTop) )
1314         {
1315             winTop->Enable();
1316         }
1317         //else: had been already disabled, don't reenable
1318     }
1319
1320     delete m_winDisabled;
1321 }
1322
1323 // Yield to other apps/messages and disable user input to all windows except
1324 // the given one
1325 bool wxSafeYield(wxWindow *win, bool onlyIfNeeded)
1326 {
1327     wxWindowDisabler wd(win);
1328
1329     bool rc;
1330     if (onlyIfNeeded)
1331         rc = wxYieldIfNeeded();
1332     else
1333         rc = wxYield();
1334
1335     return rc;
1336 }
1337
1338 // Don't synthesize KeyUp events holding down a key and producing KeyDown
1339 // events with autorepeat. On by default and always on in wxMSW. wxGTK version
1340 // in utilsgtk.cpp.
1341 #ifndef __WXGTK__
1342 bool wxSetDetectableAutoRepeat( bool WXUNUSED(flag) )
1343 {
1344     return true;    // detectable auto-repeat is the only mode MSW supports
1345 }
1346 #endif // !wxGTK
1347
1348 #endif // wxUSE_GUI