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/frame.h"
  76     #include "wx/statusbr.h"
  77 #endif // wxUSE_GUI
  78
  79 #ifndef __WXWINCE__
  80 #include <time.h>
  81 #else
  82 #include "wx/msw/wince/time.h"
  83 #endif
  84
  85 #ifdef __WXMAC__
  86 #include "wx/mac/private.h"
  87 #ifndef __DARWIN__
  88 #include "InternetConfig.h"
  89 #endif
  90 #endif
  91
  92 #if !defined(__MWERKS__) && !defined(__WXWINCE__)
  93     #include <sys/types.h>
  94     #include <sys/stat.h>
  95 #endif
  96
  97 #if defined(__WXMSW__)
  98     #include "wx/msw/private.h"
  99     #include "wx/msw/registry.h"
 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 int wxGetOsVersion(int *verMaj, int *verMin)
 291 {
 292     // we want this function to work even if there is no wxApp
 293     wxConsoleAppTraits traitsConsole;
 294     wxAppTraits *traits = wxTheApp ? wxTheApp->GetTraits() : NULL;
 295     if ( ! traits )
 296         traits = &traitsConsole;
 297
 298     wxToolkitInfo& info = traits->GetToolkitInfo();
 299     if ( verMaj )
 300         *verMaj = info.versionMajor;
 301     if ( verMin )
 302         *verMin = info.versionMinor;
 303     return info.os;
 304 }
 305
 306 /*
 307  * Class to make it easier to specify platform-dependent values
 308  */
 309
 310 wxArrayInt*  wxPlatform::sm_customPlatforms = NULL;
 311
 312 wxPlatform& wxPlatform::Is(int platform, long value)
 313 {
 314     if (wxPlatformIs(platform))
 315         m_longValue = value;
 316     return *this;
 317 }
 318
 319 wxPlatform& wxPlatform::IsNot(int platform, long value)
 320 {
 321     if (!wxPlatformIs(platform))
 322         m_longValue = value;
 323     return *this;
 324 }
 325
 326 wxPlatform& wxPlatform::Is(int platform, double value)
 327 {
 328     if (wxPlatformIs(platform))
 329         m_doubleValue = value;
 330     return *this;
 331 }
 332
 333 wxPlatform& wxPlatform::IsNot(int platform, double value)
 334 {
 335     if (!wxPlatformIs(platform))
 336         m_doubleValue = value;
 337     return *this;
 338 }
 339
 340 wxPlatform& wxPlatform::Is(int platform, const wxString& value)
 341 {
 342     if (wxPlatformIs(platform))
 343         m_stringValue = value;
 344     return *this;
 345 }
 346
 347 wxPlatform& wxPlatform::IsNot(int platform, const wxString& value)
 348 {
 349     if (!wxPlatformIs(platform))
 350         m_stringValue = value;
 351     return *this;
 352 }
 353
 354 wxPlatform& wxPlatform::Default(long value)
 355 {
 356     m_longValue = value;
 357     return *this;
 358 }
 359
 360 wxPlatform& wxPlatform::Default(double value)
 361 {
 362     m_doubleValue = value;
 363     return *this;
 364 }
 365
 366 wxPlatform& wxPlatform::Default(const wxString& value)
 367 {
 368     m_stringValue = value;
 369     return *this;
 370 }
 371
 372 void wxPlatform::AddPlatform(int platform)
 373 {
 374     if (!sm_customPlatforms)
 375         sm_customPlatforms = new wxArrayInt;
 376     sm_customPlatforms->Add(platform);
 377 }
 378
 379 void wxPlatform::ClearPlatforms()
 380 {
 381     delete sm_customPlatforms;
 382     sm_customPlatforms = NULL;
 383 }
 384
 385 /// Function for testing current platform
 386
 387 bool wxPlatform::PlatformIs(int platform)
 388 {
 389 #ifdef __WXMSW__
 390     if (platform == wxMSW)
 391         return true;
 392 #endif
 393 #ifdef __WXWINCE__
 394     if (platform == wxWinCE)
 395         return true;
 396 #endif
 397 #if defined(__WXWINCE__) && defined(__POCKETPC__)
 398     if (platform == wxWinPocketPC)
 399         return true;
 400 #endif
 401 #if defined(__WXWINCE__) && defined(__SMARTPHONE__)
 402     if (platform == wxWinSmartphone)
 403         return true;
 404 #endif
 405 #ifdef __WXGTK__
 406     if (platform == wxGTK)
 407         return true;
 408 #endif
 409 #ifdef __WXMAC__
 410     if (platform == wxMac)
 411         return true;
 412 #endif
 413 #ifdef __WXX11__
 414     if (platform == wxX11)
 415         return true;
 416 #endif
 417 #ifdef __UNIX__
 418     if (platform == wxUnix)
 419         return true;
 420 #endif
 421 #ifdef __WXMGL__
 422     if (platform == wxMGL)
 423         return true;
 424 #endif
 425 #ifdef __WXOS2__
 426     if (platform == wxOS2)
 427         return true;
 428 #endif
 429 #ifdef __WXCOCOA__
 430     if (platform == wxCocoa)
 431         return true;
 432 #endif
 433
 434     if (sm_customPlatforms && sm_customPlatforms->Index(platform) != wxNOT_FOUND)
 435         return true;
 436
 437     return false;
 438 }
 439
 440 // ----------------------------------------------------------------------------
 441 // network and user id functions
 442 // ----------------------------------------------------------------------------
 443
 444 // Get Full RFC822 style email address
 445 bool wxGetEmailAddress(wxChar *address, int maxSize)
 446 {
 447     wxString email = wxGetEmailAddress();
 448     if ( !email )
 449         return false;
 450
 451     wxStrncpy(address, email, maxSize - 1);
 452     address[maxSize - 1] = wxT('\0');
 453
 454     return true;
 455 }
 456
 457 wxString wxGetEmailAddress()
 458 {
 459     wxString email;
 460
 461     wxString host = wxGetFullHostName();
 462     if ( !host.empty() )
 463     {
 464         wxString user = wxGetUserId();
 465         if ( !user.empty() )
 466         {
 467             email << user << wxT('@') << host;
 468         }
 469     }
 470
 471     return email;
 472 }
 473
 474 wxString wxGetUserId()
 475 {
 476     static const int maxLoginLen = 256; // FIXME arbitrary number
 477
 478     wxString buf;
 479     bool ok = wxGetUserId(wxStringBuffer(buf, maxLoginLen), maxLoginLen);
 480
 481     if ( !ok )
 482         buf.Empty();
 483
 484     return buf;
 485 }
 486
 487 wxString wxGetUserName()
 488 {
 489     static const int maxUserNameLen = 1024; // FIXME arbitrary number
 490
 491     wxString buf;
 492     bool ok = wxGetUserName(wxStringBuffer(buf, maxUserNameLen), maxUserNameLen);
 493
 494     if ( !ok )
 495         buf.Empty();
 496
 497     return buf;
 498 }
 499
 500 wxString wxGetHostName()
 501 {
 502     static const size_t hostnameSize = 257;
 503
 504     wxString buf;
 505     bool ok = wxGetHostName(wxStringBuffer(buf, hostnameSize), hostnameSize);
 506
 507     if ( !ok )
 508         buf.Empty();
 509
 510     return buf;
 511 }
 512
 513 wxString wxGetFullHostName()
 514 {
 515     static const size_t hostnameSize = 257;
 516
 517     wxString buf;
 518     bool ok = wxGetFullHostName(wxStringBuffer(buf, hostnameSize), hostnameSize);
 519
 520     if ( !ok )
 521         buf.Empty();
 522
 523     return buf;
 524 }
 525
 526 wxString wxGetHomeDir()
 527 {
 528     wxString home;
 529     wxGetHomeDir(&home);
 530
 531     return home;
 532 }
 533
 534 #if 0
 535
 536 wxString wxGetCurrentDir()
 537 {
 538     wxString dir;
 539     size_t len = 1024;
 540     bool ok;
 541     do
 542     {
 543         ok = getcwd(dir.GetWriteBuf(len + 1), len) != NULL;
 544         dir.UngetWriteBuf();
 545
 546         if ( !ok )
 547         {
 548             if ( errno != ERANGE )
 549             {
 550                 wxLogSysError(_T("Failed to get current directory"));
 551
 552                 return wxEmptyString;
 553             }
 554             else
 555             {
 556                 // buffer was too small, retry with a larger one
 557                 len *= 2;
 558             }
 559         }
 560         //else: ok
 561     } while ( !ok );
 562
 563     return dir;
 564 }
 565
 566 #endif // 0
 567
 568 // ----------------------------------------------------------------------------
 569 // wxExecute
 570 // ----------------------------------------------------------------------------
 571
 572 // wxDoExecuteWithCapture() helper: reads an entire stream into one array
 573 //
 574 // returns true if ok, false if error
 575 #if wxUSE_STREAMS
 576 static bool ReadAll(wxInputStream *is, wxArrayString& output)
 577 {
 578     wxCHECK_MSG( is, false, _T("NULL stream in wxExecute()?") );
 579
 580     // the stream could be already at EOF or in wxSTREAM_BROKEN_PIPE state
 581     is->Reset();
 582
 583     wxTextInputStream tis(*is);
 584
 585     bool cont = true;
 586     while ( cont )
 587     {
 588         wxString line = tis.ReadLine();
 589         if ( is->Eof() )
 590             break;
 591
 592         if ( !*is )
 593         {
 594             cont = false;
 595         }
 596         else
 597         {
 598             output.Add(line);
 599         }
 600     }
 601
 602     return cont;
 603 }
 604 #endif // wxUSE_STREAMS
 605
 606 // this is a private function because it hasn't a clean interface: the first
 607 // array is passed by reference, the second by pointer - instead we have 2
 608 // public versions of wxExecute() below
 609 static long wxDoExecuteWithCapture(const wxString& command,
 610                                    wxArrayString& output,
 611                                    wxArrayString* error,
 612                                    int flags)
 613 {
 614     // create a wxProcess which will capture the output
 615     wxProcess *process = new wxProcess;
 616     process->Redirect();
 617
 618     long rc = wxExecute(command, wxEXEC_SYNC | flags, process);
 619
 620 #if wxUSE_STREAMS
 621     if ( rc != -1 )
 622     {
 623         if ( !ReadAll(process->GetInputStream(), output) )
 624             rc = -1;
 625
 626         if ( error )
 627         {
 628             if ( !ReadAll(process->GetErrorStream(), *error) )
 629                 rc = -1;
 630         }
 631
 632     }
 633 #else
 634     wxUnusedVar(output);
 635     wxUnusedVar(error);
 636 #endif // wxUSE_STREAMS/!wxUSE_STREAMS
 637
 638     delete process;
 639
 640     return rc;
 641 }
 642
 643 long wxExecute(const wxString& command, wxArrayString& output, int flags)
 644 {
 645     return wxDoExecuteWithCapture(command, output, NULL, flags);
 646 }
 647
 648 long wxExecute(const wxString& command,
 649                wxArrayString& output,
 650                wxArrayString& error,
 651                int flags)
 652 {
 653     return wxDoExecuteWithCapture(command, output, &error, flags);
 654 }
 655
 656 // ----------------------------------------------------------------------------
 657 // Launch default browser
 658 // ----------------------------------------------------------------------------
 659
 660 bool wxLaunchDefaultBrowser(const wxString& urlOrig, int flags)
 661 {
 662     wxUnusedVar(flags);
 663
 664     // set the scheme of url to http if it does not have one
 665     wxString url(urlOrig);
 666     if ( !wxURI(url).HasScheme() )
 667         url.Prepend(wxT("http://"));
 668
 669 #if defined(__WXMSW__)
 670
 671 #if wxUSE_IPC
 672     if ( flags & wxBROWSER_NEW_WINDOW )
 673     {
 674         // ShellExecuteEx() opens the URL in an existing window by default so
 675         // we can't use it if we need a new window
 676         wxRegKey key(wxRegKey::HKCR, url.BeforeFirst(':') + _T("\\shell\\open"));
 677         if ( key.Exists() )
 678         {
 679             wxRegKey keyDDE(key, wxT("DDEExec"));
 680             if ( keyDDE.Exists() )
 681             {
 682                 const wxString ddeTopic = wxRegKey(keyDDE, wxT("topic"));
 683
 684                 // we only know the syntax of WWW_OpenURL DDE request for IE,
 685                 // optimistically assume that all other browsers are compatible
 686                 // with it
 687                 wxString ddeCmd;
 688                 bool ok = ddeTopic == wxT("WWW_OpenURL");
 689                 if ( ok )
 690                 {
 691                     ddeCmd = keyDDE.QueryDefaultValue();
 692                     ok = !ddeCmd.empty();
 693                 }
 694
 695                 if ( ok )
 696                 {
 697                     // for WWW_OpenURL, the index of the window to open the URL
 698                     // in is -1 (meaning "current") by default, replace it with
 699                     // 0 which means "new" (see KB article 160957)
 700                     ok = ddeCmd.Replace(wxT("-1"), wxT("0"),
 701                                         false /* only first occurence */) == 1;
 702                 }
 703
 704                 if ( ok )
 705                 {
 706                     // and also replace the parameters: the topic should
 707                     // contain a placeholder for the URL
 708                     ok = ddeCmd.Replace(wxT("%1"), url, false) == 1;
 709                 }
 710
 711                 if ( ok )
 712                 {
 713                     // try to send it the DDE request now but ignore the errors
 714                     wxLogNull noLog;
 715
 716                     const wxString ddeServer = wxRegKey(keyDDE, wxT("application"));
 717                     if ( wxExecuteDDE(ddeServer, ddeTopic, ddeCmd) )
 718                         return true;
 719
 720                     // this is not necessarily an error: maybe browser is
 721                     // simply not running, but no matter, in any case we're
 722                     // going to launch it using ShellExecuteEx() below now and
 723                     // we shouldn't try to open a new window if we open a new
 724                     // browser anyhow
 725                 }
 726             }
 727         }
 728     }
 729 #endif // wxUSE_IPC
 730
 731     WinStruct<SHELLEXECUTEINFO> sei;
 732     sei.lpFile = url.c_str();
 733     sei.lpVerb = _T("open");
 734     sei.nShow = SW_SHOWNORMAL;
 735
 736     ::ShellExecuteEx(&sei);
 737
 738     const int nResult = (int) sei.hInstApp;
 739
 740     // Firefox returns file not found for some reason, so make an exception
 741     // for it
 742     if ( nResult > 32 || nResult == SE_ERR_FNF )
 743     {
 744 #ifdef __WXDEBUG__
 745         // Log something if SE_ERR_FNF happens
 746         if ( nResult == SE_ERR_FNF )
 747             wxLogDebug(wxT("SE_ERR_FNF from ShellExecute -- maybe FireFox?"));
 748 #endif // __WXDEBUG__
 749         return true;
 750     }
 751 #elif defined(__WXMAC__)
 752     OSStatus err;
 753     ICInstance inst;
 754     SInt32 startSel;
 755     SInt32 endSel;
 756
 757     err = ICStart(&inst, 'STKA'); // put your app creator code here
 758     if (err == noErr)
 759     {
 760 #if !TARGET_CARBON
 761         err = ICFindConfigFile(inst, 0, NULL);
 762 #endif
 763         if (err == noErr)
 764         {
 765             ConstStr255Param hint = 0;
 766             startSel = 0;
 767             endSel = url.Length();
 768             err = ICLaunchURL(inst, hint, url.fn_str(), endSel, &startSel, &endSel);
 769             if (err != noErr)
 770                 wxLogDebug(wxT("ICLaunchURL error %d"), (int) err);
 771         }
 772         ICStop(inst);
 773         return true;
 774     }
 775     else
 776     {
 777         wxLogDebug(wxT("ICStart error %d"), (int) err);
 778         return false;
 779     }
 780 #elif wxUSE_MIMETYPE
 781     // Non-windows way
 782     bool ok = false;
 783     wxString cmd;
 784
 785     wxFileType *ft = wxTheMimeTypesManager->GetFileTypeFromExtension(_T("html"));
 786     if ( ft )
 787     {
 788         wxString mt;
 789         ft->GetMimeType(&mt);
 790
 791         ok = ft->GetOpenCommand(&cmd, wxFileType::MessageParameters(url));
 792         delete ft;
 793     }
 794
 795     if ( !ok || cmd.empty() )
 796     {
 797         // fallback to checking for the BROWSER environment variable
 798         cmd = wxGetenv(wxT("BROWSER"));
 799         if ( !cmd.empty() )
 800             cmd << _T(' ') << url;
 801     }
 802
 803     ok = ( !cmd.empty() && wxExecute(cmd) );
 804     if (ok)
 805         return ok;
 806
 807     // no file type for HTML extension
 808     wxLogError(_T("No default application configured for HTML files."));
 809
 810 #endif // !wxUSE_MIMETYPE && !__WXMSW__
 811
 812     wxLogSysError(_T("Failed to open URL \"%s\" in default browser."),
 813                   url.c_str());
 814
 815     return false;
 816 }
 817
 818 // ----------------------------------------------------------------------------
 819 // wxApp::Yield() wrappers for backwards compatibility
 820 // ----------------------------------------------------------------------------
 821
 822 bool wxYield()
 823 {
 824     return wxTheApp && wxTheApp->Yield();
 825 }
 826
 827 bool wxYieldIfNeeded()
 828 {
 829     return wxTheApp && wxTheApp->Yield(true);
 830 }
 831
 832 #endif // wxUSE_BASE
 833
 834 // ============================================================================
 835 // GUI-only functions from now on
 836 // ============================================================================
 837
 838 #if wxUSE_GUI
 839
 840 // Id generation
 841 static long wxCurrentId = 100;
 842
 843 long wxNewId()
 844 {
 845     // skip the part of IDs space that contains hard-coded values:
 846     if (wxCurrentId == wxID_LOWEST)
 847         wxCurrentId = wxID_HIGHEST + 1;
 848
 849     return wxCurrentId++;
 850 }
 851
 852 long
 853 wxGetCurrentId(void) { return wxCurrentId; }
 854
 855 void
 856 wxRegisterId (long id)
 857 {
 858   if (id >= wxCurrentId)
 859     wxCurrentId = id + 1;
 860 }
 861
 862 #if wxUSE_MENUS
 863
 864 // ----------------------------------------------------------------------------
 865 // Menu accelerators related functions
 866 // ----------------------------------------------------------------------------
 867
 868 wxChar *wxStripMenuCodes(const wxChar *in, wxChar *out)
 869 {
 870     wxString s = wxMenuItem::GetLabelFromText(in);
 871     if ( out )
 872     {
 873         // go smash their buffer if it's not big enough - I love char * params
 874         memcpy(out, s.c_str(), s.length() * sizeof(wxChar));
 875     }
 876     else
 877     {
 878         // MYcopystring - for easier search...
 879         out = new wxChar[s.length() + 1];
 880         wxStrcpy(out, s.c_str());
 881     }
 882
 883     return out;
 884 }
 885
 886 wxString wxStripMenuCodes(const wxString& in)
 887 {
 888     wxString out;
 889
 890     size_t len = in.length();
 891     out.reserve(len);
 892
 893     for ( size_t n = 0; n < len; n++ )
 894     {
 895         wxChar ch = in[n];
 896         if ( ch == _T('&') )
 897         {
 898             // skip it, it is used to introduce the accel char (or to quote
 899             // itself in which case it should still be skipped): note that it
 900             // can't be the last character of the string
 901             if ( ++n == len )
 902             {
 903                 wxLogDebug(_T("Invalid menu string '%s'"), in.c_str());
 904             }
 905             else
 906             {
 907                 // use the next char instead
 908                 ch = in[n];
 909             }
 910         }
 911         else if ( ch == _T('\t') )
 912         {
 913             // everything after TAB is accel string, exit the loop
 914             break;
 915         }
 916
 917         out += ch;
 918     }
 919
 920     return out;
 921 }
 922
 923 #endif // wxUSE_MENUS
 924
 925 // ----------------------------------------------------------------------------
 926 // Window search functions
 927 // ----------------------------------------------------------------------------
 928
 929 /*
 930  * If parent is non-NULL, look through children for a label or title
 931  * matching the specified string. If NULL, look through all top-level windows.
 932  *
 933  */
 934
 935 wxWindow *
 936 wxFindWindowByLabel (const wxString& title, wxWindow * parent)
 937 {
 938     return wxWindow::FindWindowByLabel( title, parent );
 939 }
 940
 941
 942 /*
 943  * If parent is non-NULL, look through children for a name
 944  * matching the specified string. If NULL, look through all top-level windows.
 945  *
 946  */
 947
 948 wxWindow *
 949 wxFindWindowByName (const wxString& name, wxWindow * parent)
 950 {
 951     return wxWindow::FindWindowByName( name, parent );
 952 }
 953
 954 // Returns menu item id or wxNOT_FOUND if none.
 955 int
 956 wxFindMenuItemId (wxFrame * frame, const wxString& menuString, const wxString& itemString)
 957 {
 958 #if wxUSE_MENUS
 959   wxMenuBar *menuBar = frame->GetMenuBar ();
 960   if ( menuBar )
 961       return menuBar->FindMenuItem (menuString, itemString);
 962 #endif // wxUSE_MENUS
 963
 964   return wxNOT_FOUND;
 965 }
 966
 967 // Try to find the deepest child that contains 'pt'.
 968 // We go backwards, to try to allow for controls that are spacially
 969 // within other controls, but are still siblings (e.g. buttons within
 970 // static boxes). Static boxes are likely to be created _before_ controls
 971 // that sit inside them.
 972 wxWindow* wxFindWindowAtPoint(wxWindow* win, const wxPoint& pt)
 973 {
 974     if (!win->IsShown())
 975         return NULL;
 976
 977     // Hack for wxNotebook case: at least in wxGTK, all pages
 978     // claim to be shown, so we must only deal with the selected one.
 979 #if wxUSE_NOTEBOOK
 980     if (win->IsKindOf(CLASSINFO(wxNotebook)))
 981     {
 982       wxNotebook* nb = (wxNotebook*) win;
 983       int sel = nb->GetSelection();
 984       if (sel >= 0)
 985       {
 986         wxWindow* child = nb->GetPage(sel);
 987         wxWindow* foundWin = wxFindWindowAtPoint(child, pt);
 988         if (foundWin)
 989            return foundWin;
 990       }
 991     }
 992 #endif
 993
 994     wxWindowList::compatibility_iterator node = win->GetChildren().GetLast();
 995     while (node)
 996     {
 997         wxWindow* child = node->GetData();
 998         wxWindow* foundWin = wxFindWindowAtPoint(child, pt);
 999         if (foundWin)
1000           return foundWin;
1001         node = node->GetPrevious();
1002     }
1003
1004     wxPoint pos = win->GetPosition();
1005     wxSize sz = win->GetSize();
1006     if (win->GetParent())
1007     {
1008         pos = win->GetParent()->ClientToScreen(pos);
1009     }
1010
1011     wxRect rect(pos, sz);
1012     if (rect.Inside(pt))
1013         return win;
1014     else
1015         return NULL;
1016 }
1017
1018 wxWindow* wxGenericFindWindowAtPoint(const wxPoint& pt)
1019 {
1020     // Go backwards through the list since windows
1021     // on top are likely to have been appended most
1022     // recently.
1023     wxWindowList::compatibility_iterator node = wxTopLevelWindows.GetLast();
1024     while (node)
1025     {
1026         wxWindow* win = node->GetData();
1027         wxWindow* found = wxFindWindowAtPoint(win, pt);
1028         if (found)
1029             return found;
1030         node = node->GetPrevious();
1031     }
1032     return NULL;
1033 }
1034
1035 // ----------------------------------------------------------------------------
1036 // GUI helpers
1037 // ----------------------------------------------------------------------------
1038
1039 /*
1040  * N.B. these convenience functions must be separate from msgdlgg.cpp, textdlgg.cpp
1041  * since otherwise the generic code may be pulled in unnecessarily.
1042  */
1043
1044 #if wxUSE_MSGDLG
1045
1046 int wxMessageBox(const wxString& message, const wxString& caption, long style,
1047                  wxWindow *parent, int WXUNUSED(x), int WXUNUSED(y) )
1048 {
1049     long decorated_style = style;
1050
1051     if ( ( style & ( wxICON_EXCLAMATION | wxICON_HAND | wxICON_INFORMATION | wxICON_QUESTION ) ) == 0 )
1052     {
1053         decorated_style |= ( style & wxYES ) ? wxICON_QUESTION : wxICON_INFORMATION ;
1054     }
1055
1056     wxMessageDialog dialog(parent, message, caption, decorated_style);
1057
1058     int ans = dialog.ShowModal();
1059     switch ( ans )
1060     {
1061         case wxID_OK:
1062             return wxOK;
1063         case wxID_YES:
1064             return wxYES;
1065         case wxID_NO:
1066             return wxNO;
1067         case wxID_CANCEL:
1068             return wxCANCEL;
1069     }
1070
1071     wxFAIL_MSG( _T("unexpected return code from wxMessageDialog") );
1072
1073     return wxCANCEL;
1074 }
1075
1076 #endif // wxUSE_MSGDLG
1077
1078 #if wxUSE_TEXTDLG
1079
1080 wxString wxGetTextFromUser(const wxString& message, const wxString& caption,
1081                         const wxString& defaultValue, wxWindow *parent,
1082                         wxCoord x, wxCoord y, bool centre )
1083 {
1084     wxString str;
1085     long style = wxTextEntryDialogStyle;
1086
1087     if (centre)
1088         style |= wxCENTRE;
1089     else
1090         style &= ~wxCENTRE;
1091
1092     wxTextEntryDialog dialog(parent, message, caption, defaultValue, style, wxPoint(x, y));
1093
1094     if (dialog.ShowModal() == wxID_OK)
1095     {
1096         str = dialog.GetValue();
1097     }
1098
1099     return str;
1100 }
1101
1102 wxString wxGetPasswordFromUser(const wxString& message,
1103                                const wxString& caption,
1104                                const wxString& defaultValue,
1105                                wxWindow *parent,
1106                                wxCoord x, wxCoord y, bool centre )
1107 {
1108     wxString str;
1109     long style = wxTextEntryDialogStyle;
1110
1111     if (centre)
1112         style |= wxCENTRE;
1113     else
1114         style &= ~wxCENTRE;
1115
1116     wxPasswordEntryDialog dialog(parent, message, caption, defaultValue,
1117                              style, wxPoint(x, y));
1118     if ( dialog.ShowModal() == wxID_OK )
1119     {
1120         str = dialog.GetValue();
1121     }
1122
1123     return str;
1124 }
1125
1126 #endif // wxUSE_TEXTDLG
1127
1128 #if wxUSE_COLOURDLG
1129
1130 wxColour wxGetColourFromUser(wxWindow *parent, const wxColour& colInit, const wxString& caption)
1131 {
1132     wxColourData data;
1133     data.SetChooseFull(true);
1134     if ( colInit.Ok() )
1135     {
1136         data.SetColour((wxColour &)colInit); // const_cast
1137     }
1138
1139     wxColour colRet;
1140     wxColourDialog dialog(parent, &data);
1141     if (!caption.IsEmpty())
1142         dialog.SetTitle(caption);
1143     if ( dialog.ShowModal() == wxID_OK )
1144     {
1145         colRet = dialog.GetColourData().GetColour();
1146     }
1147     //else: leave it invalid
1148
1149     return colRet;
1150 }
1151
1152 #endif // wxUSE_COLOURDLG
1153
1154 #if wxUSE_FONTDLG
1155
1156 wxFont wxGetFontFromUser(wxWindow *parent, const wxFont& fontInit, const wxString& caption)
1157 {
1158     wxFontData data;
1159     if ( fontInit.Ok() )
1160     {
1161         data.SetInitialFont(fontInit);
1162     }
1163
1164     wxFont fontRet;
1165     wxFontDialog dialog(parent, data);
1166     if (!caption.IsEmpty())
1167         dialog.SetTitle(caption);
1168     if ( dialog.ShowModal() == wxID_OK )
1169     {
1170         fontRet = dialog.GetFontData().GetChosenFont();
1171     }
1172     //else: leave it invalid
1173
1174     return fontRet;
1175 }
1176
1177 #endif // wxUSE_FONTDLG
1178
1179 // ----------------------------------------------------------------------------
1180 // wxSafeYield and supporting functions
1181 // ----------------------------------------------------------------------------
1182
1183 void wxEnableTopLevelWindows(bool enable)
1184 {
1185     wxWindowList::compatibility_iterator node;
1186     for ( node = wxTopLevelWindows.GetFirst(); node; node = node->GetNext() )
1187         node->GetData()->Enable(enable);
1188 }
1189
1190 wxWindowDisabler::wxWindowDisabler(wxWindow *winToSkip)
1191 {
1192     // remember the top level windows which were already disabled, so that we
1193     // don't reenable them later
1194     m_winDisabled = NULL;
1195
1196     wxWindowList::compatibility_iterator node;
1197     for ( node = wxTopLevelWindows.GetFirst(); node; node = node->GetNext() )
1198     {
1199         wxWindow *winTop = node->GetData();
1200         if ( winTop == winToSkip )
1201             continue;
1202
1203         // we don't need to disable the hidden or already disabled windows
1204         if ( winTop->IsEnabled() && winTop->IsShown() )
1205         {
1206             winTop->Disable();
1207         }
1208         else
1209         {
1210             if ( !m_winDisabled )
1211             {
1212                 m_winDisabled = new wxWindowList;
1213             }
1214
1215             m_winDisabled->Append(winTop);
1216         }
1217     }
1218 }
1219
1220 wxWindowDisabler::~wxWindowDisabler()
1221 {
1222     wxWindowList::compatibility_iterator node;
1223     for ( node = wxTopLevelWindows.GetFirst(); node; node = node->GetNext() )
1224     {
1225         wxWindow *winTop = node->GetData();
1226         if ( !m_winDisabled || !m_winDisabled->Find(winTop) )
1227         {
1228             winTop->Enable();
1229         }
1230         //else: had been already disabled, don't reenable
1231     }
1232
1233     delete m_winDisabled;
1234 }
1235
1236 // Yield to other apps/messages and disable user input to all windows except
1237 // the given one
1238 bool wxSafeYield(wxWindow *win, bool onlyIfNeeded)
1239 {
1240     wxWindowDisabler wd(win);
1241
1242     bool rc;
1243     if (onlyIfNeeded)
1244         rc = wxYieldIfNeeded();
1245     else
1246         rc = wxYield();
1247
1248     return rc;
1249 }
1250
1251 // Don't synthesize KeyUp events holding down a key and producing KeyDown
1252 // events with autorepeat. On by default and always on in wxMSW. wxGTK version
1253 // in utilsgtk.cpp.
1254 #ifndef __WXGTK__
1255 bool wxSetDetectableAutoRepeat( bool WXUNUSED(flag) )
1256 {
1257     return true;    // detectable auto-repeat is the only mode MSW supports
1258 }
1259 #endif // !wxGTK
1260
1261 #endif // wxUSE_GUI