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