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