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 // wxApp::Yield() wrappers for backwards compatibility
 635 // ----------------------------------------------------------------------------
 636
 637 bool wxYield()
 638 {
 639     return wxTheApp && wxTheApp->Yield();
 640 }
 641
 642 bool wxYieldIfNeeded()
 643 {
 644     return wxTheApp && wxTheApp->Yield(true);
 645 }
 646
 647 // Id generation
 648 static long wxCurrentId = 100;
 649
 650 long wxNewId()
 651 {
 652     // skip the part of IDs space that contains hard-coded values:
 653     if (wxCurrentId == wxID_LOWEST)
 654         wxCurrentId = wxID_HIGHEST + 1;
 655
 656     return wxCurrentId++;
 657 }
 658
 659 long
 660 wxGetCurrentId(void) { return wxCurrentId; }
 661
 662 void
 663 wxRegisterId (long id)
 664 {
 665   if (id >= wxCurrentId)
 666     wxCurrentId = id + 1;
 667 }
 668
 669 #endif // wxUSE_BASE
 670
 671 // ============================================================================
 672 // GUI-only functions from now on
 673 // ============================================================================
 674
 675 #if wxUSE_GUI
 676
 677 // ----------------------------------------------------------------------------
 678 // Launch default browser
 679 // ----------------------------------------------------------------------------
 680
 681 #ifdef __WXCOCOA__
 682 // Private method in Objective-C++ source file.
 683 bool wxCocoaLaunchDefaultBrowser(const wxString& url, int flags);
 684 #endif
 685
 686 bool wxLaunchDefaultBrowser(const wxString& urlOrig, int flags)
 687 {
 688     wxUnusedVar(flags);
 689
 690     // set the scheme of url to http if it does not have one
 691     // RR: This doesn't work if the url is just a local path
 692     wxString url(urlOrig);
 693     wxURI uri(url);
 694     if ( !uri.HasScheme() )
 695     {
 696         if (wxFileExists(urlOrig))
 697             url.Prepend( wxT("file://") );
 698         else
 699             url.Prepend(wxT("http://"));
 700     }
 701
 702
 703 #if defined(__WXMSW__)
 704
 705 #if wxUSE_IPC
 706     if ( flags & wxBROWSER_NEW_WINDOW )
 707     {
 708         // ShellExecuteEx() opens the URL in an existing window by default so
 709         // we can't use it if we need a new window
 710         wxRegKey key(wxRegKey::HKCR, uri.GetScheme() + _T("\\shell\\open"));
 711         if ( !key.Exists() )
 712         {
 713             // try default browser, it must be registered at least for http URLs
 714             key.SetName(wxRegKey::HKCR, _T("http\\shell\\open"));
 715         }
 716
 717         if ( key.Exists() )
 718         {
 719             wxRegKey keyDDE(key, wxT("DDEExec"));
 720             if ( keyDDE.Exists() )
 721             {
 722                 const wxString ddeTopic = wxRegKey(keyDDE, wxT("topic"));
 723
 724                 // we only know the syntax of WWW_OpenURL DDE request for IE,
 725                 // optimistically assume that all other browsers are compatible
 726                 // with it
 727                 wxString ddeCmd;
 728                 bool ok = ddeTopic == wxT("WWW_OpenURL");
 729                 if ( ok )
 730                 {
 731                     ddeCmd = keyDDE.QueryDefaultValue();
 732                     ok = !ddeCmd.empty();
 733                 }
 734
 735                 if ( ok )
 736                 {
 737                     // for WWW_OpenURL, the index of the window to open the URL
 738                     // in is -1 (meaning "current") by default, replace it with
 739                     // 0 which means "new" (see KB article 160957)
 740                     ok = ddeCmd.Replace(wxT("-1"), wxT("0"),
 741                                         false /* only first occurence */) == 1;
 742                 }
 743
 744                 if ( ok )
 745                 {
 746                     // and also replace the parameters: the topic should
 747                     // contain a placeholder for the URL
 748                     ok = ddeCmd.Replace(wxT("%1"), url, false) == 1;
 749                 }
 750
 751                 if ( ok )
 752                 {
 753                     // try to send it the DDE request now but ignore the errors
 754                     wxLogNull noLog;
 755
 756                     const wxString ddeServer = wxRegKey(keyDDE, wxT("application"));
 757                     if ( wxExecuteDDE(ddeServer, ddeTopic, ddeCmd) )
 758                         return true;
 759
 760                     // this is not necessarily an error: maybe browser is
 761                     // simply not running, but no matter, in any case we're
 762                     // going to launch it using ShellExecuteEx() below now and
 763                     // we shouldn't try to open a new window if we open a new
 764                     // browser anyhow
 765                 }
 766             }
 767         }
 768     }
 769 #endif // wxUSE_IPC
 770
 771     WinStruct<SHELLEXECUTEINFO> sei;
 772     sei.lpFile = url.c_str();
 773     sei.lpVerb = _T("open");
 774     sei.nShow = SW_SHOWNORMAL;
 775
 776     ::ShellExecuteEx(&sei);
 777
 778     const int nResult = (int) sei.hInstApp;
 779
 780     // Firefox returns file not found for some reason, so make an exception
 781     // for it
 782     if ( nResult > 32 || nResult == SE_ERR_FNF )
 783     {
 784 #ifdef __WXDEBUG__
 785         // Log something if SE_ERR_FNF happens
 786         if ( nResult == SE_ERR_FNF )
 787             wxLogDebug(wxT("SE_ERR_FNF from ShellExecute -- maybe FireFox?"));
 788 #endif // __WXDEBUG__
 789         return true;
 790     }
 791 #elif defined(__WXCOCOA__)
 792     // NOTE: We need to call the real implementation from src/cocoa/utils.mm
 793     // because the code must use Objective-C features.
 794     return wxCocoaLaunchDefaultBrowser(url, flags);
 795 #elif defined(__WXMAC__)
 796     OSStatus err;
 797     ICInstance inst;
 798     long int startSel;
 799     long int endSel;
 800
 801     err = ICStart(&inst, 'STKA'); // put your app creator code here
 802     if (err == noErr)
 803     {
 804 #if !TARGET_CARBON
 805         err = ICFindConfigFile(inst, 0, NULL);
 806 #endif
 807         if (err == noErr)
 808         {
 809             ConstStr255Param hint = 0;
 810             startSel = 0;
 811             endSel = url.length();
 812             err = ICLaunchURL(inst, hint, url.fn_str(), endSel, &startSel, &endSel);
 813             if (err != noErr)
 814                 wxLogDebug(wxT("ICLaunchURL error %d"), (int) err);
 815         }
 816         ICStop(inst);
 817         return true;
 818     }
 819     else
 820     {
 821         wxLogDebug(wxT("ICStart error %d"), (int) err);
 822         return false;
 823     }
 824 #else
 825     // (non-Mac, non-MSW)
 826
 827 #ifdef __UNIX__
 828
 829     wxString desktop = wxTheApp->GetTraits()->GetDesktopEnvironment();
 830
 831     // GNOME and KDE desktops have some applications which should be always installed
 832     // together with their main parts, which give us the
 833     if (desktop == wxT("GNOME"))
 834     {
 835         wxArrayString errors;
 836         wxArrayString output;
 837
 838         // gconf will tell us the path of the application to use as browser
 839         long res = wxExecute( wxT("gconftool-2 --get /desktop/gnome/applications/browser/exec"),
 840                               output, errors, wxEXEC_NODISABLE );
 841         if (res >= 0 && errors.GetCount() == 0)
 842         {
 843             wxString cmd = output[0];
 844             cmd << _T(' ') << url;
 845             if (wxExecute(cmd))
 846                 return true;
 847         }
 848     }
 849     else if (desktop == wxT("KDE"))
 850     {
 851         // kfmclient directly opens the given URL
 852         if (wxExecute(wxT("kfmclient openURL ") + url))
 853             return true;
 854     }
 855 #endif
 856
 857     bool ok = false;
 858     wxString cmd;
 859
 860 #if wxUSE_MIMETYPE
 861     wxFileType *ft = wxTheMimeTypesManager->GetFileTypeFromExtension(_T("html"));
 862     if ( ft )
 863     {
 864         wxString mt;
 865         ft->GetMimeType(&mt);
 866
 867         ok = ft->GetOpenCommand(&cmd, wxFileType::MessageParameters(url));
 868         delete ft;
 869     }
 870 #endif // wxUSE_MIMETYPE
 871
 872     if ( !ok || cmd.empty() )
 873     {
 874         // fallback to checking for the BROWSER environment variable
 875         cmd = wxGetenv(wxT("BROWSER"));
 876         if ( !cmd.empty() )
 877             cmd << _T(' ') << url;
 878     }
 879
 880     ok = ( !cmd.empty() && wxExecute(cmd) );
 881     if (ok)
 882         return ok;
 883
 884     // no file type for HTML extension
 885     wxLogError(_T("No default application configured for HTML files."));
 886
 887 #endif // !wxUSE_MIMETYPE && !__WXMSW__
 888
 889     wxLogSysError(_T("Failed to open URL \"%s\" in default browser."),
 890                   url.c_str());
 891
 892     return false;
 893 }
 894
 895 // ----------------------------------------------------------------------------
 896 // Menu accelerators related functions
 897 // ----------------------------------------------------------------------------
 898
 899 wxChar *wxStripMenuCodes(const wxChar *in, wxChar *out)
 900 {
 901 #if wxUSE_MENUS
 902     wxString s = wxMenuItem::GetLabelFromText(in);
 903 #else
 904     wxString str(in);
 905     wxString s = wxStripMenuCodes(str);
 906 #endif // wxUSE_MENUS
 907     if ( out )
 908     {
 909         // go smash their buffer if it's not big enough - I love char * params
 910         memcpy(out, s.c_str(), s.length() * sizeof(wxChar));
 911     }
 912     else
 913     {
 914         out = new wxChar[s.length() + 1];
 915         wxStrcpy(out, s.c_str());
 916     }
 917
 918     return out;
 919 }
 920
 921 wxString wxStripMenuCodes(const wxString& in, int flags)
 922 {
 923     wxASSERT_MSG( flags, _T("this is useless to call without any flags") );
 924
 925     wxString out;
 926
 927     size_t len = in.length();
 928     out.reserve(len);
 929
 930     for ( size_t n = 0; n < len; n++ )
 931     {
 932         wxChar ch = in[n];
 933         if ( (flags & wxStrip_Mnemonics) && ch == _T('&') )
 934         {
 935             // skip it, it is used to introduce the accel char (or to quote
 936             // itself in which case it should still be skipped): note that it
 937             // can't be the last character of the string
 938             if ( ++n == len )
 939             {
 940                 wxLogDebug(_T("Invalid menu string '%s'"), in.c_str());
 941             }
 942             else
 943             {
 944                 // use the next char instead
 945                 ch = in[n];
 946             }
 947         }
 948         else if ( (flags & wxStrip_Accel) && ch == _T('\t') )
 949         {
 950             // everything after TAB is accel string, exit the loop
 951             break;
 952         }
 953
 954         out += ch;
 955     }
 956
 957     return out;
 958 }
 959
 960 // ----------------------------------------------------------------------------
 961 // Window search functions
 962 // ----------------------------------------------------------------------------
 963
 964 /*
 965  * If parent is non-NULL, look through children for a label or title
 966  * matching the specified string. If NULL, look through all top-level windows.
 967  *
 968  */
 969
 970 wxWindow *
 971 wxFindWindowByLabel (const wxString& title, wxWindow * parent)
 972 {
 973     return wxWindow::FindWindowByLabel( title, parent );
 974 }
 975
 976
 977 /*
 978  * If parent is non-NULL, look through children for a name
 979  * matching the specified string. If NULL, look through all top-level windows.
 980  *
 981  */
 982
 983 wxWindow *
 984 wxFindWindowByName (const wxString& name, wxWindow * parent)
 985 {
 986     return wxWindow::FindWindowByName( name, parent );
 987 }
 988
 989 // Returns menu item id or wxNOT_FOUND if none.
 990 int
 991 wxFindMenuItemId (wxFrame * frame, const wxString& menuString, const wxString& itemString)
 992 {
 993 #if wxUSE_MENUS
 994     wxMenuBar *menuBar = frame->GetMenuBar ();
 995     if ( menuBar )
 996         return menuBar->FindMenuItem (menuString, itemString);
 997 #endif // wxUSE_MENUS
 998
 999     return wxNOT_FOUND;
1000 }
1001
1002 // Try to find the deepest child that contains 'pt'.
1003 // We go backwards, to try to allow for controls that are spacially
1004 // within other controls, but are still siblings (e.g. buttons within
1005 // static boxes). Static boxes are likely to be created _before_ controls
1006 // that sit inside them.
1007 wxWindow* wxFindWindowAtPoint(wxWindow* win, const wxPoint& pt)
1008 {
1009     if (!win->IsShown())
1010         return NULL;
1011
1012     // Hack for wxNotebook case: at least in wxGTK, all pages
1013     // claim to be shown, so we must only deal with the selected one.
1014 #if wxUSE_NOTEBOOK
1015     if (win->IsKindOf(CLASSINFO(wxNotebook)))
1016     {
1017       wxNotebook* nb = (wxNotebook*) win;
1018       int sel = nb->GetSelection();
1019       if (sel >= 0)
1020       {
1021         wxWindow* child = nb->GetPage(sel);
1022         wxWindow* foundWin = wxFindWindowAtPoint(child, pt);
1023         if (foundWin)
1024            return foundWin;
1025       }
1026     }
1027 #endif
1028
1029     wxWindowList::compatibility_iterator node = win->GetChildren().GetLast();
1030     while (node)
1031     {
1032         wxWindow* child = node->GetData();
1033         wxWindow* foundWin = wxFindWindowAtPoint(child, pt);
1034         if (foundWin)
1035           return foundWin;
1036         node = node->GetPrevious();
1037     }
1038
1039     wxPoint pos = win->GetPosition();
1040     wxSize sz = win->GetSize();
1041     if ( !win->IsTopLevel() && win->GetParent() )
1042     {
1043         pos = win->GetParent()->ClientToScreen(pos);
1044     }
1045
1046     wxRect rect(pos, sz);
1047     if (rect.Contains(pt))
1048         return win;
1049
1050     return NULL;
1051 }
1052
1053 wxWindow* wxGenericFindWindowAtPoint(const wxPoint& pt)
1054 {
1055     // Go backwards through the list since windows
1056     // on top are likely to have been appended most
1057     // recently.
1058     wxWindowList::compatibility_iterator node = wxTopLevelWindows.GetLast();
1059     while (node)
1060     {
1061         wxWindow* win = node->GetData();
1062         wxWindow* found = wxFindWindowAtPoint(win, pt);
1063         if (found)
1064             return found;
1065         node = node->GetPrevious();
1066     }
1067     return NULL;
1068 }
1069
1070 // ----------------------------------------------------------------------------
1071 // GUI helpers
1072 // ----------------------------------------------------------------------------
1073
1074 /*
1075  * N.B. these convenience functions must be separate from msgdlgg.cpp, textdlgg.cpp
1076  * since otherwise the generic code may be pulled in unnecessarily.
1077  */
1078
1079 #if wxUSE_MSGDLG
1080
1081 int wxMessageBox(const wxString& message, const wxString& caption, long style,
1082                  wxWindow *parent, int WXUNUSED(x), int WXUNUSED(y) )
1083 {
1084     long decorated_style = style;
1085
1086     if ( ( style & ( wxICON_EXCLAMATION | wxICON_HAND | wxICON_INFORMATION | wxICON_QUESTION ) ) == 0 )
1087     {
1088         decorated_style |= ( style & wxYES ) ? wxICON_QUESTION : wxICON_INFORMATION ;
1089     }
1090
1091     wxMessageDialog dialog(parent, message, caption, decorated_style);
1092
1093     int ans = dialog.ShowModal();
1094     switch ( ans )
1095     {
1096         case wxID_OK:
1097             return wxOK;
1098         case wxID_YES:
1099             return wxYES;
1100         case wxID_NO:
1101             return wxNO;
1102         case wxID_CANCEL:
1103             return wxCANCEL;
1104     }
1105
1106     wxFAIL_MSG( _T("unexpected return code from wxMessageDialog") );
1107
1108     return wxCANCEL;
1109 }
1110
1111 #endif // wxUSE_MSGDLG
1112
1113 #if wxUSE_TEXTDLG
1114
1115 wxString wxGetTextFromUser(const wxString& message, const wxString& caption,
1116                         const wxString& defaultValue, wxWindow *parent,
1117                         wxCoord x, wxCoord y, bool centre )
1118 {
1119     wxString str;
1120     long style = wxTextEntryDialogStyle;
1121
1122     if (centre)
1123         style |= wxCENTRE;
1124     else
1125         style &= ~wxCENTRE;
1126
1127     wxTextEntryDialog dialog(parent, message, caption, defaultValue, style, wxPoint(x, y));
1128
1129     if (dialog.ShowModal() == wxID_OK)
1130     {
1131         str = dialog.GetValue();
1132     }
1133
1134     return str;
1135 }
1136
1137 wxString wxGetPasswordFromUser(const wxString& message,
1138                                const wxString& caption,
1139                                const wxString& defaultValue,
1140                                wxWindow *parent,
1141                                wxCoord x, wxCoord y, bool centre )
1142 {
1143     wxString str;
1144     long style = wxTextEntryDialogStyle;
1145
1146     if (centre)
1147         style |= wxCENTRE;
1148     else
1149         style &= ~wxCENTRE;
1150
1151     wxPasswordEntryDialog dialog(parent, message, caption, defaultValue,
1152                              style, wxPoint(x, y));
1153     if ( dialog.ShowModal() == wxID_OK )
1154     {
1155         str = dialog.GetValue();
1156     }
1157
1158     return str;
1159 }
1160
1161 #endif // wxUSE_TEXTDLG
1162
1163 #if wxUSE_COLOURDLG
1164
1165 wxColour wxGetColourFromUser(wxWindow *parent, const wxColour& colInit, const wxString& caption)
1166 {
1167     wxColourData data;
1168     data.SetChooseFull(true);
1169     if ( colInit.Ok() )
1170     {
1171         data.SetColour((wxColour &)colInit); // const_cast
1172     }
1173
1174     wxColour colRet;
1175     wxColourDialog dialog(parent, &data);
1176     if (!caption.empty())
1177         dialog.SetTitle(caption);
1178     if ( dialog.ShowModal() == wxID_OK )
1179     {
1180         colRet = dialog.GetColourData().GetColour();
1181     }
1182     //else: leave it invalid
1183
1184     return colRet;
1185 }
1186
1187 #endif // wxUSE_COLOURDLG
1188
1189 #if wxUSE_FONTDLG
1190
1191 wxFont wxGetFontFromUser(wxWindow *parent, const wxFont& fontInit, const wxString& caption)
1192 {
1193     wxFontData data;
1194     if ( fontInit.Ok() )
1195     {
1196         data.SetInitialFont(fontInit);
1197     }
1198
1199     wxFont fontRet;
1200     wxFontDialog dialog(parent, data);
1201     if (!caption.empty())
1202         dialog.SetTitle(caption);
1203     if ( dialog.ShowModal() == wxID_OK )
1204     {
1205         fontRet = dialog.GetFontData().GetChosenFont();
1206     }
1207     //else: leave it invalid
1208
1209     return fontRet;
1210 }
1211
1212 #endif // wxUSE_FONTDLG
1213
1214 // ----------------------------------------------------------------------------
1215 // wxSafeYield and supporting functions
1216 // ----------------------------------------------------------------------------
1217
1218 void wxEnableTopLevelWindows(bool enable)
1219 {
1220     wxWindowList::compatibility_iterator node;
1221     for ( node = wxTopLevelWindows.GetFirst(); node; node = node->GetNext() )
1222         node->GetData()->Enable(enable);
1223 }
1224
1225 wxWindowDisabler::wxWindowDisabler(wxWindow *winToSkip)
1226 {
1227     // remember the top level windows which were already disabled, so that we
1228     // don't reenable them later
1229     m_winDisabled = NULL;
1230
1231     wxWindowList::compatibility_iterator node;
1232     for ( node = wxTopLevelWindows.GetFirst(); node; node = node->GetNext() )
1233     {
1234         wxWindow *winTop = node->GetData();
1235         if ( winTop == winToSkip )
1236             continue;
1237
1238         // we don't need to disable the hidden or already disabled windows
1239         if ( winTop->IsEnabled() && winTop->IsShown() )
1240         {
1241             winTop->Disable();
1242         }
1243         else
1244         {
1245             if ( !m_winDisabled )
1246             {
1247                 m_winDisabled = new wxWindowList;
1248             }
1249
1250             m_winDisabled->Append(winTop);
1251         }
1252     }
1253 }
1254
1255 wxWindowDisabler::~wxWindowDisabler()
1256 {
1257     wxWindowList::compatibility_iterator node;
1258     for ( node = wxTopLevelWindows.GetFirst(); node; node = node->GetNext() )
1259     {
1260         wxWindow *winTop = node->GetData();
1261         if ( !m_winDisabled || !m_winDisabled->Find(winTop) )
1262         {
1263             winTop->Enable();
1264         }
1265         //else: had been already disabled, don't reenable
1266     }
1267
1268     delete m_winDisabled;
1269 }
1270
1271 // Yield to other apps/messages and disable user input to all windows except
1272 // the given one
1273 bool wxSafeYield(wxWindow *win, bool onlyIfNeeded)
1274 {
1275     wxWindowDisabler wd(win);
1276
1277     bool rc;
1278     if (onlyIfNeeded)
1279         rc = wxYieldIfNeeded();
1280     else
1281         rc = wxYield();
1282
1283     return rc;
1284 }
1285
1286 // Don't synthesize KeyUp events holding down a key and producing KeyDown
1287 // events with autorepeat. On by default and always on in wxMSW. wxGTK version
1288 // in utilsgtk.cpp.
1289 #ifndef __WXGTK__
1290 bool wxSetDetectableAutoRepeat( bool WXUNUSED(flag) )
1291 {
1292     return true;    // detectable auto-repeat is the only mode MSW supports
1293 }
1294 #endif // !wxGTK
1295
1296 #endif // wxUSE_GUI