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 == wxMSW)
 444         return true;
 445 #endif
 446 #ifdef __WXWINCE__
 447     if (platform == wxWinCE)
 448         return true;
 449 #endif
 450 #if defined(__WXWINCE__) && defined(__POCKETPC__)
 451     if (platform == wxWinPocketPC)
 452         return true;
 453 #endif
 454 #if defined(__WXWINCE__) && defined(__SMARTPHONE__)
 455     if (platform == wxWinSmartPhone)
 456         return true;
 457 #endif
 458 #ifdef __WXGTK__
 459     if (platform == wxGTK)
 460         return true;
 461 #endif
 462 #ifdef __WXMAC__
 463     if (platform == wxMac)
 464         return true;
 465 #endif
 466 #ifdef __WXX11__
 467     if (platform == wxX11)
 468         return true;
 469 #endif
 470 #ifdef __UNIX__
 471     if (platform == wxUnix)
 472         return true;
 473 #endif
 474 #ifdef __WXMGL__
 475     if (platform == wxMGL)
 476         return true;
 477 #endif
 478 #ifdef __WXOS2__
 479     if (platform == wxOS2)
 480         return true;
 481 #endif
 482 #ifdef __WXCOCOA__
 483     if (platform == wxCocoa)
 484         return true;
 485 #endif
 486
 487     if (sm_customPlatforms && sm_customPlatforms->Index(platform) != wxNOT_FOUND)
 488         return true;
 489
 490     return false;
 491 }
 492
 493 // ----------------------------------------------------------------------------
 494 // network and user id functions
 495 // ----------------------------------------------------------------------------
 496
 497 // Get Full RFC822 style email address
 498 bool wxGetEmailAddress(wxChar *address, int maxSize)
 499 {
 500     wxString email = wxGetEmailAddress();
 501     if ( !email )
 502         return false;
 503
 504     wxStrncpy(address, email, maxSize - 1);
 505     address[maxSize - 1] = wxT('\0');
 506
 507     return true;
 508 }
 509
 510 wxString wxGetEmailAddress()
 511 {
 512     wxString email;
 513
 514     wxString host = wxGetFullHostName();
 515     if ( !host.empty() )
 516     {
 517         wxString user = wxGetUserId();
 518         if ( !user.empty() )
 519         {
 520             email << user << wxT('@') << host;
 521         }
 522     }
 523
 524     return email;
 525 }
 526
 527 wxString wxGetUserId()
 528 {
 529     static const int maxLoginLen = 256; // FIXME arbitrary number
 530
 531     wxString buf;
 532     bool ok = wxGetUserId(wxStringBuffer(buf, maxLoginLen), maxLoginLen);
 533
 534     if ( !ok )
 535         buf.Empty();
 536
 537     return buf;
 538 }
 539
 540 wxString wxGetUserName()
 541 {
 542     static const int maxUserNameLen = 1024; // FIXME arbitrary number
 543
 544     wxString buf;
 545     bool ok = wxGetUserName(wxStringBuffer(buf, maxUserNameLen), maxUserNameLen);
 546
 547     if ( !ok )
 548         buf.Empty();
 549
 550     return buf;
 551 }
 552
 553 wxString wxGetHostName()
 554 {
 555     static const size_t hostnameSize = 257;
 556
 557     wxString buf;
 558     bool ok = wxGetHostName(wxStringBuffer(buf, hostnameSize), hostnameSize);
 559
 560     if ( !ok )
 561         buf.Empty();
 562
 563     return buf;
 564 }
 565
 566 wxString wxGetFullHostName()
 567 {
 568     static const size_t hostnameSize = 257;
 569
 570     wxString buf;
 571     bool ok = wxGetFullHostName(wxStringBuffer(buf, hostnameSize), hostnameSize);
 572
 573     if ( !ok )
 574         buf.Empty();
 575
 576     return buf;
 577 }
 578
 579 wxString wxGetHomeDir()
 580 {
 581     wxString home;
 582     wxGetHomeDir(&home);
 583
 584     return home;
 585 }
 586
 587 #if 0
 588
 589 wxString wxGetCurrentDir()
 590 {
 591     wxString dir;
 592     size_t len = 1024;
 593     bool ok;
 594     do
 595     {
 596         ok = getcwd(dir.GetWriteBuf(len + 1), len) != NULL;
 597         dir.UngetWriteBuf();
 598
 599         if ( !ok )
 600         {
 601             if ( errno != ERANGE )
 602             {
 603                 wxLogSysError(_T("Failed to get current directory"));
 604
 605                 return wxEmptyString;
 606             }
 607             else
 608             {
 609                 // buffer was too small, retry with a larger one
 610                 len *= 2;
 611             }
 612         }
 613         //else: ok
 614     } while ( !ok );
 615
 616     return dir;
 617 }
 618
 619 #endif // 0
 620
 621 // ----------------------------------------------------------------------------
 622 // wxExecute
 623 // ----------------------------------------------------------------------------
 624
 625 // wxDoExecuteWithCapture() helper: reads an entire stream into one array
 626 //
 627 // returns true if ok, false if error
 628 #if wxUSE_STREAMS
 629 static bool ReadAll(wxInputStream *is, wxArrayString& output)
 630 {
 631     wxCHECK_MSG( is, false, _T("NULL stream in wxExecute()?") );
 632
 633     // the stream could be already at EOF or in wxSTREAM_BROKEN_PIPE state
 634     is->Reset();
 635
 636     wxTextInputStream tis(*is);
 637
 638     bool cont = true;
 639     while ( cont )
 640     {
 641         wxString line = tis.ReadLine();
 642         if ( is->Eof() )
 643             break;
 644
 645         if ( !*is )
 646         {
 647             cont = false;
 648         }
 649         else
 650         {
 651             output.Add(line);
 652         }
 653     }
 654
 655     return cont;
 656 }
 657 #endif // wxUSE_STREAMS
 658
 659 // this is a private function because it hasn't a clean interface: the first
 660 // array is passed by reference, the second by pointer - instead we have 2
 661 // public versions of wxExecute() below
 662 static long wxDoExecuteWithCapture(const wxString& command,
 663                                    wxArrayString& output,
 664                                    wxArrayString* error,
 665                                    int flags)
 666 {
 667     // create a wxProcess which will capture the output
 668     wxProcess *process = new wxProcess;
 669     process->Redirect();
 670
 671     long rc = wxExecute(command, wxEXEC_SYNC | flags, process);
 672
 673 #if wxUSE_STREAMS
 674     if ( rc != -1 )
 675     {
 676         if ( !ReadAll(process->GetInputStream(), output) )
 677             rc = -1;
 678
 679         if ( error )
 680         {
 681             if ( !ReadAll(process->GetErrorStream(), *error) )
 682                 rc = -1;
 683         }
 684
 685     }
 686 #else
 687     wxUnusedVar(output);
 688     wxUnusedVar(error);
 689 #endif // wxUSE_STREAMS/!wxUSE_STREAMS
 690
 691     delete process;
 692
 693     return rc;
 694 }
 695
 696 long wxExecute(const wxString& command, wxArrayString& output, int flags)
 697 {
 698     return wxDoExecuteWithCapture(command, output, NULL, flags);
 699 }
 700
 701 long wxExecute(const wxString& command,
 702                wxArrayString& output,
 703                wxArrayString& error,
 704                int flags)
 705 {
 706     return wxDoExecuteWithCapture(command, output, &error, flags);
 707 }
 708
 709 // ----------------------------------------------------------------------------
 710 // Launch default browser
 711 // ----------------------------------------------------------------------------
 712
 713 bool wxLaunchDefaultBrowser(const wxString& urlOrig, int flags)
 714 {
 715     wxUnusedVar(flags);
 716
 717     // set the scheme of url to http if it does not have one
 718     wxString url(urlOrig);
 719     if ( !wxURI(url).HasScheme() )
 720         url.Prepend(wxT("http://"));
 721
 722 #if defined(__WXMSW__)
 723
 724 #if wxUSE_IPC
 725     if ( flags & wxBROWSER_NEW_WINDOW )
 726     {
 727         // ShellExecuteEx() opens the URL in an existing window by default so
 728         // we can't use it if we need a new window
 729         wxRegKey key(wxRegKey::HKCR, url.BeforeFirst(':') + _T("\\shell\\open"));
 730         if ( key.Exists() )
 731         {
 732             wxRegKey keyDDE(key, wxT("DDEExec"));
 733             if ( keyDDE.Exists() )
 734             {
 735                 const wxString ddeTopic = wxRegKey(keyDDE, wxT("topic"));
 736
 737                 // we only know the syntax of WWW_OpenURL DDE request for IE,
 738                 // optimistically assume that all other browsers are compatible
 739                 // with it
 740                 wxString ddeCmd;
 741                 bool ok = ddeTopic == wxT("WWW_OpenURL");
 742                 if ( ok )
 743                 {
 744                     ddeCmd = keyDDE.QueryDefaultValue();
 745                     ok = !ddeCmd.empty();
 746                 }
 747
 748                 if ( ok )
 749                 {
 750                     // for WWW_OpenURL, the index of the window to open the URL
 751                     // in is -1 (meaning "current") by default, replace it with
 752                     // 0 which means "new" (see KB article 160957)
 753                     ok = ddeCmd.Replace(wxT("-1"), wxT("0"),
 754                                         false /* only first occurence */) == 1;
 755                 }
 756
 757                 if ( ok )
 758                 {
 759                     // and also replace the parameters: the topic should
 760                     // contain a placeholder for the URL
 761                     ok = ddeCmd.Replace(wxT("%1"), url, false) == 1;
 762                 }
 763
 764                 if ( ok )
 765                 {
 766                     // try to send it the DDE request now but ignore the errors
 767                     wxLogNull noLog;
 768
 769                     const wxString ddeServer = wxRegKey(keyDDE, wxT("application"));
 770                     if ( wxExecuteDDE(ddeServer, ddeTopic, ddeCmd) )
 771                         return true;
 772
 773                     // this is not necessarily an error: maybe browser is
 774                     // simply not running, but no matter, in any case we're
 775                     // going to launch it using ShellExecuteEx() below now and
 776                     // we shouldn't try to open a new window if we open a new
 777                     // browser anyhow
 778                 }
 779             }
 780         }
 781     }
 782 #endif // wxUSE_IPC
 783
 784     WinStruct<SHELLEXECUTEINFO> sei;
 785     sei.lpFile = url.c_str();
 786     sei.lpVerb = _T("open");
 787     sei.nShow = SW_SHOWNORMAL;
 788
 789     ::ShellExecuteEx(&sei);
 790
 791     const int nResult = (int) sei.hInstApp;
 792
 793     // Firefox returns file not found for some reason, so make an exception
 794     // for it
 795     if ( nResult > 32 || nResult == SE_ERR_FNF )
 796     {
 797 #ifdef __WXDEBUG__
 798         // Log something if SE_ERR_FNF happens
 799         if ( nResult == SE_ERR_FNF )
 800             wxLogDebug(wxT("SE_ERR_FNF from ShellExecute -- maybe FireFox?"));
 801 #endif // __WXDEBUG__
 802         return true;
 803     }
 804 #elif defined(__WXMAC__)
 805     OSStatus err;
 806     ICInstance inst;
 807     SInt32 startSel;
 808     SInt32 endSel;
 809
 810     err = ICStart(&inst, 'STKA'); // put your app creator code here
 811     if (err == noErr)
 812     {
 813 #if !TARGET_CARBON
 814         err = ICFindConfigFile(inst, 0, NULL);
 815 #endif
 816         if (err == noErr)
 817         {
 818             ConstStr255Param hint = 0;
 819             startSel = 0;
 820             endSel = url.length();
 821             err = ICLaunchURL(inst, hint, url.fn_str(), endSel, &startSel, &endSel);
 822             if (err != noErr)
 823                 wxLogDebug(wxT("ICLaunchURL error %d"), (int) err);
 824         }
 825         ICStop(inst);
 826         return true;
 827     }
 828     else
 829     {
 830         wxLogDebug(wxT("ICStart error %d"), (int) err);
 831         return false;
 832     }
 833 #elif wxUSE_MIMETYPE
 834     // Non-windows way
 835     bool ok = false;
 836     wxString cmd;
 837
 838     wxFileType *ft = wxTheMimeTypesManager->GetFileTypeFromExtension(_T("html"));
 839     if ( ft )
 840     {
 841         wxString mt;
 842         ft->GetMimeType(&mt);
 843
 844         ok = ft->GetOpenCommand(&cmd, wxFileType::MessageParameters(url));
 845         delete ft;
 846     }
 847
 848     if ( !ok || cmd.empty() )
 849     {
 850         // fallback to checking for the BROWSER environment variable
 851         cmd = wxGetenv(wxT("BROWSER"));
 852         if ( !cmd.empty() )
 853             cmd << _T(' ') << url;
 854     }
 855
 856     ok = ( !cmd.empty() && wxExecute(cmd) );
 857     if (ok)
 858         return ok;
 859
 860     // no file type for HTML extension
 861     wxLogError(_T("No default application configured for HTML files."));
 862
 863 #endif // !wxUSE_MIMETYPE && !__WXMSW__
 864
 865     wxLogSysError(_T("Failed to open URL \"%s\" in default browser."),
 866                   url.c_str());
 867
 868     return false;
 869 }
 870
 871 // ----------------------------------------------------------------------------
 872 // wxApp::Yield() wrappers for backwards compatibility
 873 // ----------------------------------------------------------------------------
 874
 875 bool wxYield()
 876 {
 877     return wxTheApp && wxTheApp->Yield();
 878 }
 879
 880 bool wxYieldIfNeeded()
 881 {
 882     return wxTheApp && wxTheApp->Yield(true);
 883 }
 884
 885 #endif // wxUSE_BASE
 886
 887 // ============================================================================
 888 // GUI-only functions from now on
 889 // ============================================================================
 890
 891 #if wxUSE_GUI
 892
 893 // Id generation
 894 static long wxCurrentId = 100;
 895
 896 long wxNewId()
 897 {
 898     // skip the part of IDs space that contains hard-coded values:
 899     if (wxCurrentId == wxID_LOWEST)
 900         wxCurrentId = wxID_HIGHEST + 1;
 901
 902     return wxCurrentId++;
 903 }
 904
 905 long
 906 wxGetCurrentId(void) { return wxCurrentId; }
 907
 908 void
 909 wxRegisterId (long id)
 910 {
 911   if (id >= wxCurrentId)
 912     wxCurrentId = id + 1;
 913 }
 914
 915 // ----------------------------------------------------------------------------
 916 // Menu accelerators related functions
 917 // ----------------------------------------------------------------------------
 918
 919 wxChar *wxStripMenuCodes(const wxChar *in, wxChar *out)
 920 {
 921 #if wxUSE_MENUS
 922     wxString s = wxMenuItem::GetLabelFromText(in);
 923 #else
 924     wxString str(in);
 925     wxString s = wxStripMenuCodes(str);
 926 #endif // wxUSE_MENUS
 927     if ( out )
 928     {
 929         // go smash their buffer if it's not big enough - I love char * params
 930         memcpy(out, s.c_str(), s.length() * sizeof(wxChar));
 931     }
 932     else
 933     {
 934         // MYcopystring - for easier search...
 935         out = new wxChar[s.length() + 1];
 936         wxStrcpy(out, s.c_str());
 937     }
 938
 939     return out;
 940 }
 941
 942 wxString wxStripMenuCodes(const wxString& in, int flags)
 943 {
 944     wxASSERT_MSG( flags, _T("this is useless to call without any flags") );
 945
 946     wxString out;
 947
 948     size_t len = in.length();
 949     out.reserve(len);
 950
 951     for ( size_t n = 0; n < len; n++ )
 952     {
 953         wxChar ch = in[n];
 954         if ( (flags & wxStrip_Mnemonics) && ch == _T('&') )
 955         {
 956             // skip it, it is used to introduce the accel char (or to quote
 957             // itself in which case it should still be skipped): note that it
 958             // can't be the last character of the string
 959             if ( ++n == len )
 960             {
 961                 wxLogDebug(_T("Invalid menu string '%s'"), in.c_str());
 962             }
 963             else
 964             {
 965                 // use the next char instead
 966                 ch = in[n];
 967             }
 968         }
 969         else if ( (flags & wxStrip_Accel) && ch == _T('\t') )
 970         {
 971             // everything after TAB is accel string, exit the loop
 972             break;
 973         }
 974
 975         out += ch;
 976     }
 977
 978     return out;
 979 }
 980
 981 // ----------------------------------------------------------------------------
 982 // Window search functions
 983 // ----------------------------------------------------------------------------
 984
 985 /*
 986  * If parent is non-NULL, look through children for a label or title
 987  * matching the specified string. If NULL, look through all top-level windows.
 988  *
 989  */
 990
 991 wxWindow *
 992 wxFindWindowByLabel (const wxString& title, wxWindow * parent)
 993 {
 994     return wxWindow::FindWindowByLabel( title, parent );
 995 }
 996
 997
 998 /*
 999  * If parent is non-NULL, look through children for a name
1000  * matching the specified string. If NULL, look through all top-level windows.
1001  *
1002  */
1003
1004 wxWindow *
1005 wxFindWindowByName (const wxString& name, wxWindow * parent)
1006 {
1007     return wxWindow::FindWindowByName( name, parent );
1008 }
1009
1010 // Returns menu item id or wxNOT_FOUND if none.
1011 int
1012 wxFindMenuItemId (wxFrame * frame, const wxString& menuString, const wxString& itemString)
1013 {
1014 #if wxUSE_MENUS
1015     wxMenuBar *menuBar = frame->GetMenuBar ();
1016     if ( menuBar )
1017         return menuBar->FindMenuItem (menuString, itemString);
1018 #endif // wxUSE_MENUS
1019
1020     return wxNOT_FOUND;
1021 }
1022
1023 // Try to find the deepest child that contains 'pt'.
1024 // We go backwards, to try to allow for controls that are spacially
1025 // within other controls, but are still siblings (e.g. buttons within
1026 // static boxes). Static boxes are likely to be created _before_ controls
1027 // that sit inside them.
1028 wxWindow* wxFindWindowAtPoint(wxWindow* win, const wxPoint& pt)
1029 {
1030     if (!win->IsShown())
1031         return NULL;
1032
1033     // Hack for wxNotebook case: at least in wxGTK, all pages
1034     // claim to be shown, so we must only deal with the selected one.
1035 #if wxUSE_NOTEBOOK
1036     if (win->IsKindOf(CLASSINFO(wxNotebook)))
1037     {
1038       wxNotebook* nb = (wxNotebook*) win;
1039       int sel = nb->GetSelection();
1040       if (sel >= 0)
1041       {
1042         wxWindow* child = nb->GetPage(sel);
1043         wxWindow* foundWin = wxFindWindowAtPoint(child, pt);
1044         if (foundWin)
1045            return foundWin;
1046       }
1047     }
1048 #endif
1049
1050     wxWindowList::compatibility_iterator node = win->GetChildren().GetLast();
1051     while (node)
1052     {
1053         wxWindow* child = node->GetData();
1054         wxWindow* foundWin = wxFindWindowAtPoint(child, pt);
1055         if (foundWin)
1056           return foundWin;
1057         node = node->GetPrevious();
1058     }
1059
1060     wxPoint pos = win->GetPosition();
1061     wxSize sz = win->GetSize();
1062     if ( !win->IsTopLevel() && win->GetParent() )
1063     {
1064         pos = win->GetParent()->ClientToScreen(pos);
1065     }
1066
1067     wxRect rect(pos, sz);
1068     if (rect.Inside(pt))
1069         return win;
1070
1071     return NULL;
1072 }
1073
1074 wxWindow* wxGenericFindWindowAtPoint(const wxPoint& pt)
1075 {
1076     // Go backwards through the list since windows
1077     // on top are likely to have been appended most
1078     // recently.
1079     wxWindowList::compatibility_iterator node = wxTopLevelWindows.GetLast();
1080     while (node)
1081     {
1082         wxWindow* win = node->GetData();
1083         wxWindow* found = wxFindWindowAtPoint(win, pt);
1084         if (found)
1085             return found;
1086         node = node->GetPrevious();
1087     }
1088     return NULL;
1089 }
1090
1091 // ----------------------------------------------------------------------------
1092 // GUI helpers
1093 // ----------------------------------------------------------------------------
1094
1095 /*
1096  * N.B. these convenience functions must be separate from msgdlgg.cpp, textdlgg.cpp
1097  * since otherwise the generic code may be pulled in unnecessarily.
1098  */
1099
1100 #if wxUSE_MSGDLG
1101
1102 int wxMessageBox(const wxString& message, const wxString& caption, long style,
1103                  wxWindow *parent, int WXUNUSED(x), int WXUNUSED(y) )
1104 {
1105     long decorated_style = style;
1106
1107     if ( ( style & ( wxICON_EXCLAMATION | wxICON_HAND | wxICON_INFORMATION | wxICON_QUESTION ) ) == 0 )
1108     {
1109         decorated_style |= ( style & wxYES ) ? wxICON_QUESTION : wxICON_INFORMATION ;
1110     }
1111
1112     wxMessageDialog dialog(parent, message, caption, decorated_style);
1113
1114     int ans = dialog.ShowModal();
1115     switch ( ans )
1116     {
1117         case wxID_OK:
1118             return wxOK;
1119         case wxID_YES:
1120             return wxYES;
1121         case wxID_NO:
1122             return wxNO;
1123         case wxID_CANCEL:
1124             return wxCANCEL;
1125     }
1126
1127     wxFAIL_MSG( _T("unexpected return code from wxMessageDialog") );
1128
1129     return wxCANCEL;
1130 }
1131
1132 #endif // wxUSE_MSGDLG
1133
1134 #if wxUSE_TEXTDLG
1135
1136 wxString wxGetTextFromUser(const wxString& message, const wxString& caption,
1137                         const wxString& defaultValue, wxWindow *parent,
1138                         wxCoord x, wxCoord y, bool centre )
1139 {
1140     wxString str;
1141     long style = wxTextEntryDialogStyle;
1142
1143     if (centre)
1144         style |= wxCENTRE;
1145     else
1146         style &= ~wxCENTRE;
1147
1148     wxTextEntryDialog dialog(parent, message, caption, defaultValue, style, wxPoint(x, y));
1149
1150     if (dialog.ShowModal() == wxID_OK)
1151     {
1152         str = dialog.GetValue();
1153     }
1154
1155     return str;
1156 }
1157
1158 wxString wxGetPasswordFromUser(const wxString& message,
1159                                const wxString& caption,
1160                                const wxString& defaultValue,
1161                                wxWindow *parent,
1162                                wxCoord x, wxCoord y, bool centre )
1163 {
1164     wxString str;
1165     long style = wxTextEntryDialogStyle;
1166
1167     if (centre)
1168         style |= wxCENTRE;
1169     else
1170         style &= ~wxCENTRE;
1171
1172     wxPasswordEntryDialog dialog(parent, message, caption, defaultValue,
1173                              style, wxPoint(x, y));
1174     if ( dialog.ShowModal() == wxID_OK )
1175     {
1176         str = dialog.GetValue();
1177     }
1178
1179     return str;
1180 }
1181
1182 #endif // wxUSE_TEXTDLG
1183
1184 #if wxUSE_COLOURDLG
1185
1186 wxColour wxGetColourFromUser(wxWindow *parent, const wxColour& colInit, const wxString& caption)
1187 {
1188     wxColourData data;
1189     data.SetChooseFull(true);
1190     if ( colInit.Ok() )
1191     {
1192         data.SetColour((wxColour &)colInit); // const_cast
1193     }
1194
1195     wxColour colRet;
1196     wxColourDialog dialog(parent, &data);
1197     if (!caption.empty())
1198         dialog.SetTitle(caption);
1199     if ( dialog.ShowModal() == wxID_OK )
1200     {
1201         colRet = dialog.GetColourData().GetColour();
1202     }
1203     //else: leave it invalid
1204
1205     return colRet;
1206 }
1207
1208 #endif // wxUSE_COLOURDLG
1209
1210 #if wxUSE_FONTDLG
1211
1212 wxFont wxGetFontFromUser(wxWindow *parent, const wxFont& fontInit, const wxString& caption)
1213 {
1214     wxFontData data;
1215     if ( fontInit.Ok() )
1216     {
1217         data.SetInitialFont(fontInit);
1218     }
1219
1220     wxFont fontRet;
1221     wxFontDialog dialog(parent, data);
1222     if (!caption.empty())
1223         dialog.SetTitle(caption);
1224     if ( dialog.ShowModal() == wxID_OK )
1225     {
1226         fontRet = dialog.GetFontData().GetChosenFont();
1227     }
1228     //else: leave it invalid
1229
1230     return fontRet;
1231 }
1232
1233 #endif // wxUSE_FONTDLG
1234
1235 // ----------------------------------------------------------------------------
1236 // wxSafeYield and supporting functions
1237 // ----------------------------------------------------------------------------
1238
1239 void wxEnableTopLevelWindows(bool enable)
1240 {
1241     wxWindowList::compatibility_iterator node;
1242     for ( node = wxTopLevelWindows.GetFirst(); node; node = node->GetNext() )
1243         node->GetData()->Enable(enable);
1244 }
1245
1246 wxWindowDisabler::wxWindowDisabler(wxWindow *winToSkip)
1247 {
1248     // remember the top level windows which were already disabled, so that we
1249     // don't reenable them later
1250     m_winDisabled = NULL;
1251
1252     wxWindowList::compatibility_iterator node;
1253     for ( node = wxTopLevelWindows.GetFirst(); node; node = node->GetNext() )
1254     {
1255         wxWindow *winTop = node->GetData();
1256         if ( winTop == winToSkip )
1257             continue;
1258
1259         // we don't need to disable the hidden or already disabled windows
1260         if ( winTop->IsEnabled() && winTop->IsShown() )
1261         {
1262             winTop->Disable();
1263         }
1264         else
1265         {
1266             if ( !m_winDisabled )
1267             {
1268                 m_winDisabled = new wxWindowList;
1269             }
1270
1271             m_winDisabled->Append(winTop);
1272         }
1273     }
1274 }
1275
1276 wxWindowDisabler::~wxWindowDisabler()
1277 {
1278     wxWindowList::compatibility_iterator node;
1279     for ( node = wxTopLevelWindows.GetFirst(); node; node = node->GetNext() )
1280     {
1281         wxWindow *winTop = node->GetData();
1282         if ( !m_winDisabled || !m_winDisabled->Find(winTop) )
1283         {
1284             winTop->Enable();
1285         }
1286         //else: had been already disabled, don't reenable
1287     }
1288
1289     delete m_winDisabled;
1290 }
1291
1292 // Yield to other apps/messages and disable user input to all windows except
1293 // the given one
1294 bool wxSafeYield(wxWindow *win, bool onlyIfNeeded)
1295 {
1296     wxWindowDisabler wd(win);
1297
1298     bool rc;
1299     if (onlyIfNeeded)
1300         rc = wxYieldIfNeeded();
1301     else
1302         rc = wxYield();
1303
1304     return rc;
1305 }
1306
1307 // Don't synthesize KeyUp events holding down a key and producing KeyDown
1308 // events with autorepeat. On by default and always on in wxMSW. wxGTK version
1309 // in utilsgtk.cpp.
1310 #ifndef __WXGTK__
1311 bool wxSetDetectableAutoRepeat( bool WXUNUSED(flag) )
1312 {
1313     return true;    // detectable auto-repeat is the only mode MSW supports
1314 }
1315 #endif // !wxGTK
1316
1317 #endif // wxUSE_GUI