src/common/utilscmn.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        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 #if defined(__GNUG__) && !defined(NO_GCC_PRAGMA) && !defined(__EMX__)
  21 // Some older compilers (such as EMX) cannot handle
  22 // #pragma interface/implementation correctly, iff
  23 // #pragma implementation is used in _two_ translation
  24 // units (as created by e.g. event.cpp compiled for
  25 // libwx_base and event.cpp compiled for libwx_gui_core).
  26 // So we must not use those pragmas for those compilers in
  27 // such files.
  28     #pragma implementation "utils.h"
  29 #endif
  30
  31 // For compilers that support precompilation, includes "wx.h".
  32 #include "wx/wxprec.h"
  33
  34 #ifdef __BORLANDC__
  35     #pragma hdrstop
  36 #endif
  37
  38 #ifndef WX_PRECOMP
  39     #include "wx/app.h"
  40     #include "wx/string.h"
  41     #include "wx/utils.h"
  42     #include "wx/intl.h"
  43     #include "wx/log.h"
  44
  45     #if wxUSE_GUI
  46         #include "wx/window.h"
  47         #include "wx/frame.h"
  48         #include "wx/menu.h"
  49         #include "wx/msgdlg.h"
  50         #include "wx/textdlg.h"
  51         #include "wx/textctrl.h"    // for wxTE_PASSWORD
  52         #if wxUSE_ACCEL
  53             #include "wx/menuitem.h"
  54             #include "wx/accel.h"
  55         #endif // wxUSE_ACCEL
  56     #endif // wxUSE_GUI
  57 #endif // WX_PRECOMP
  58
  59 #include "wx/apptrait.h"
  60
  61 #include "wx/process.h"
  62 #include "wx/txtstrm.h"
  63 #include "wx/uri.h"
  64 #include "wx/mimetype.h"
  65 #include "wx/config.h"
  66
  67 #if defined(__WXWINCE__) && wxUSE_DATETIME
  68 #include "wx/datetime.h"
  69 #endif
  70
  71 #include <ctype.h>
  72 #include <stdio.h>
  73 #include <stdlib.h>
  74 #include <string.h>
  75
  76 #if !defined(__WATCOMC__)
  77     #if !(defined(_MSC_VER) && (_MSC_VER > 800))
  78         #include <errno.h>
  79     #endif
  80 #endif
  81
  82 #if wxUSE_GUI
  83     #include "wx/colordlg.h"
  84     #include "wx/fontdlg.h"
  85     #include "wx/notebook.h"
  86     #include "wx/frame.h"
  87     #include "wx/statusbr.h"
  88 #endif // wxUSE_GUI
  89
  90 #ifndef __WXWINCE__
  91 #include <time.h>
  92 #else
  93 #include "wx/msw/wince/time.h"
  94 #endif
  95
  96 #if !defined(__MWERKS__) && !defined(__WXWINCE__)
  97     #include <sys/types.h>
  98     #include <sys/stat.h>
  99 #endif
 100
 101 #if defined(__WXMSW__)
 102     #include "wx/msw/private.h"
 103 #endif
 104
 105 #if wxUSE_BASE
 106
 107 // ----------------------------------------------------------------------------
 108 // common data
 109 // ----------------------------------------------------------------------------
 110
 111 #if WXWIN_COMPATIBILITY_2_2
 112     const wxChar *wxInternalErrorStr = wxT("wxWidgets Internal Error");
 113     const wxChar *wxFatalErrorStr = wxT("wxWidgets Fatal Error");
 114 #endif // WXWIN_COMPATIBILITY_2_2
 115
 116 // ============================================================================
 117 // implementation
 118 // ============================================================================
 119
 120 #if WXWIN_COMPATIBILITY_2_4
 121
 122 wxChar *
 123 copystring (const wxChar *s)
 124 {
 125     if (s == NULL) s = wxEmptyString;
 126     size_t len = wxStrlen (s) + 1;
 127
 128     wxChar *news = new wxChar[len];
 129     memcpy (news, s, len * sizeof(wxChar));    // Should be the fastest
 130
 131     return news;
 132 }
 133
 134 #endif // WXWIN_COMPATIBILITY_2_4
 135
 136 // ----------------------------------------------------------------------------
 137 // String <-> Number conversions (deprecated)
 138 // ----------------------------------------------------------------------------
 139
 140 #if WXWIN_COMPATIBILITY_2_4
 141
 142 WXDLLIMPEXP_DATA_BASE(const wxChar *) wxFloatToStringStr = wxT("%.2f");
 143 WXDLLIMPEXP_DATA_BASE(const wxChar *) wxDoubleToStringStr = wxT("%.2f");
 144
 145 void
 146 StringToFloat (const wxChar *s, float *number)
 147 {
 148     if (s && *s && number)
 149         *number = (float) wxStrtod (s, (wxChar **) NULL);
 150 }
 151
 152 void
 153 StringToDouble (const wxChar *s, double *number)
 154 {
 155     if (s && *s && number)
 156         *number = wxStrtod (s, (wxChar **) NULL);
 157 }
 158
 159 wxChar *
 160 FloatToString (float number, const wxChar *fmt)
 161 {
 162     static wxChar buf[256];
 163
 164     wxSprintf (buf, fmt, number);
 165     return buf;
 166 }
 167
 168 wxChar *
 169 DoubleToString (double number, const wxChar *fmt)
 170 {
 171     static wxChar buf[256];
 172
 173     wxSprintf (buf, fmt, number);
 174     return buf;
 175 }
 176
 177 void
 178 StringToInt (const wxChar *s, int *number)
 179 {
 180     if (s && *s && number)
 181         *number = (int) wxStrtol (s, (wxChar **) NULL, 10);
 182 }
 183
 184 void
 185 StringToLong (const wxChar *s, long *number)
 186 {
 187     if (s && *s && number)
 188         *number = wxStrtol (s, (wxChar **) NULL, 10);
 189 }
 190
 191 wxChar *
 192 IntToString (int number)
 193 {
 194     static wxChar buf[20];
 195
 196     wxSprintf (buf, wxT("%d"), number);
 197     return buf;
 198 }
 199
 200 wxChar *
 201 LongToString (long number)
 202 {
 203     static wxChar buf[20];
 204
 205     wxSprintf (buf, wxT("%ld"), number);
 206     return buf;
 207 }
 208
 209 #endif // WXWIN_COMPATIBILITY_2_4
 210
 211 // Array used in DecToHex conversion routine.
 212 static wxChar hexArray[] = wxT("0123456789ABCDEF");
 213
 214 // Convert 2-digit hex number to decimal
 215 int wxHexToDec(const wxString& buf)
 216 {
 217     int firstDigit, secondDigit;
 218
 219     if (buf.GetChar(0) >= wxT('A'))
 220         firstDigit = buf.GetChar(0) - wxT('A') + 10;
 221     else
 222        firstDigit = buf.GetChar(0) - wxT('0');
 223
 224     if (buf.GetChar(1) >= wxT('A'))
 225         secondDigit = buf.GetChar(1) - wxT('A') + 10;
 226     else
 227         secondDigit = buf.GetChar(1) - wxT('0');
 228
 229     return (firstDigit & 0xF) * 16 + (secondDigit & 0xF );
 230 }
 231
 232 // Convert decimal integer to 2-character hex string
 233 void wxDecToHex(int dec, wxChar *buf)
 234 {
 235     int firstDigit = (int)(dec/16.0);
 236     int secondDigit = (int)(dec - (firstDigit*16.0));
 237     buf[0] = hexArray[firstDigit];
 238     buf[1] = hexArray[secondDigit];
 239     buf[2] = 0;
 240 }
 241
 242 // Convert decimal integer to 2-character hex string
 243 wxString wxDecToHex(int dec)
 244 {
 245     wxChar buf[3];
 246     wxDecToHex(dec, buf);
 247     return wxString(buf);
 248 }
 249
 250 // ----------------------------------------------------------------------------
 251 // misc functions
 252 // ----------------------------------------------------------------------------
 253
 254 // Return the current date/time
 255 wxString wxNow()
 256 {
 257 #ifdef __WXWINCE__
 258 #if wxUSE_DATETIME
 259     wxDateTime now = wxDateTime::Now();
 260     return now.Format();
 261 #else
 262     return wxEmptyString;
 263 #endif
 264 #else
 265     time_t now = time((time_t *) NULL);
 266     char *date = ctime(&now);
 267     date[24] = '\0';
 268     return wxString::FromAscii(date);
 269 #endif
 270 }
 271
 272 void wxUsleep(unsigned long milliseconds)
 273 {
 274     wxMilliSleep(milliseconds);
 275 }
 276
 277 const wxChar *wxGetInstallPrefix()
 278 {
 279     wxString prefix;
 280
 281     if ( wxGetEnv(wxT("WXPREFIX"), &prefix) )
 282         return prefix.c_str();
 283
 284 #ifdef wxINSTALL_PREFIX
 285     return wxT(wxINSTALL_PREFIX);
 286 #else
 287     return wxEmptyString;
 288 #endif
 289 }
 290
 291 wxString wxGetDataDir()
 292 {
 293     wxString dir = wxGetInstallPrefix();
 294     dir <<  wxFILE_SEP_PATH << wxT("share") << wxFILE_SEP_PATH << wxT("wx");
 295     return dir;
 296 }
 297
 298 int wxGetOsVersion(int *verMaj, int *verMin)
 299 {
 300     // we want this function to work even if there is no wxApp
 301     wxConsoleAppTraits traitsConsole;
 302     wxAppTraits *traits = wxTheApp ? wxTheApp->GetTraits() : NULL;
 303     if ( ! traits )
 304         traits = &traitsConsole;
 305
 306     wxToolkitInfo& info = traits->GetToolkitInfo();
 307     if ( verMaj )
 308         *verMaj = info.versionMajor;
 309     if ( verMin )
 310         *verMin = info.versionMinor;
 311     return info.os;
 312 }
 313
 314 // ----------------------------------------------------------------------------
 315 // network and user id functions
 316 // ----------------------------------------------------------------------------
 317
 318 // Get Full RFC822 style email address
 319 bool wxGetEmailAddress(wxChar *address, int maxSize)
 320 {
 321     wxString email = wxGetEmailAddress();
 322     if ( !email )
 323         return false;
 324
 325     wxStrncpy(address, email, maxSize - 1);
 326     address[maxSize - 1] = wxT('\0');
 327
 328     return true;
 329 }
 330
 331 wxString wxGetEmailAddress()
 332 {
 333     wxString email;
 334
 335     wxString host = wxGetFullHostName();
 336     if ( !host.empty() )
 337     {
 338         wxString user = wxGetUserId();
 339         if ( !user.empty() )
 340         {
 341             email << user << wxT('@') << host;
 342         }
 343     }
 344
 345     return email;
 346 }
 347
 348 wxString wxGetUserId()
 349 {
 350     static const int maxLoginLen = 256; // FIXME arbitrary number
 351
 352     wxString buf;
 353     bool ok = wxGetUserId(wxStringBuffer(buf, maxLoginLen), maxLoginLen);
 354
 355     if ( !ok )
 356         buf.Empty();
 357
 358     return buf;
 359 }
 360
 361 wxString wxGetUserName()
 362 {
 363     static const int maxUserNameLen = 1024; // FIXME arbitrary number
 364
 365     wxString buf;
 366     bool ok = wxGetUserName(wxStringBuffer(buf, maxUserNameLen), maxUserNameLen);
 367
 368     if ( !ok )
 369         buf.Empty();
 370
 371     return buf;
 372 }
 373
 374 wxString wxGetHostName()
 375 {
 376     static const size_t hostnameSize = 257;
 377
 378     wxString buf;
 379     bool ok = wxGetHostName(wxStringBuffer(buf, hostnameSize), hostnameSize);
 380
 381     if ( !ok )
 382         buf.Empty();
 383
 384     return buf;
 385 }
 386
 387 wxString wxGetFullHostName()
 388 {
 389     static const size_t hostnameSize = 257;
 390
 391     wxString buf;
 392     bool ok = wxGetFullHostName(wxStringBuffer(buf, hostnameSize), hostnameSize);
 393
 394     if ( !ok )
 395         buf.Empty();
 396
 397     return buf;
 398 }
 399
 400 wxString wxGetHomeDir()
 401 {
 402     wxString home;
 403     wxGetHomeDir(&home);
 404
 405     return home;
 406 }
 407
 408 #if 0
 409
 410 wxString wxGetCurrentDir()
 411 {
 412     wxString dir;
 413     size_t len = 1024;
 414     bool ok;
 415     do
 416     {
 417         ok = getcwd(dir.GetWriteBuf(len + 1), len) != NULL;
 418         dir.UngetWriteBuf();
 419
 420         if ( !ok )
 421         {
 422             if ( errno != ERANGE )
 423             {
 424                 wxLogSysError(_T("Failed to get current directory"));
 425
 426                 return wxEmptyString;
 427             }
 428             else
 429             {
 430                 // buffer was too small, retry with a larger one
 431                 len *= 2;
 432             }
 433         }
 434         //else: ok
 435     } while ( !ok );
 436
 437     return dir;
 438 }
 439
 440 #endif // 0
 441
 442 // ----------------------------------------------------------------------------
 443 // wxExecute
 444 // ----------------------------------------------------------------------------
 445
 446 // wxDoExecuteWithCapture() helper: reads an entire stream into one array
 447 //
 448 // returns true if ok, false if error
 449 #if wxUSE_STREAMS
 450 static bool ReadAll(wxInputStream *is, wxArrayString& output)
 451 {
 452     wxCHECK_MSG( is, false, _T("NULL stream in wxExecute()?") );
 453
 454     // the stream could be already at EOF or in wxSTREAM_BROKEN_PIPE state
 455     is->Reset();
 456
 457     wxTextInputStream tis(*is);
 458
 459     bool cont = true;
 460     while ( cont )
 461     {
 462         wxString line = tis.ReadLine();
 463         if ( is->Eof() )
 464             break;
 465
 466         if ( !*is )
 467         {
 468             cont = false;
 469         }
 470         else
 471         {
 472             output.Add(line);
 473         }
 474     }
 475
 476     return cont;
 477 }
 478 #endif // wxUSE_STREAMS
 479
 480 // this is a private function because it hasn't a clean interface: the first
 481 // array is passed by reference, the second by pointer - instead we have 2
 482 // public versions of wxExecute() below
 483 static long wxDoExecuteWithCapture(const wxString& command,
 484                                    wxArrayString& output,
 485                                    wxArrayString* error,
 486                                    int flags)
 487 {
 488     // create a wxProcess which will capture the output
 489     wxProcess *process = new wxProcess;
 490     process->Redirect();
 491
 492     long rc = wxExecute(command, wxEXEC_SYNC | flags, process);
 493
 494 #if wxUSE_STREAMS
 495     if ( rc != -1 )
 496     {
 497         if ( !ReadAll(process->GetInputStream(), output) )
 498             rc = -1;
 499
 500         if ( error )
 501         {
 502             if ( !ReadAll(process->GetErrorStream(), *error) )
 503                 rc = -1;
 504         }
 505
 506     }
 507 #else
 508     wxUnusedVar(output);
 509     wxUnusedVar(error);
 510 #endif // wxUSE_STREAMS/!wxUSE_STREAMS
 511
 512     delete process;
 513
 514     return rc;
 515 }
 516
 517 long wxExecute(const wxString& command, wxArrayString& output, int flags)
 518 {
 519     return wxDoExecuteWithCapture(command, output, NULL, flags);
 520 }
 521
 522 long wxExecute(const wxString& command,
 523                wxArrayString& output,
 524                wxArrayString& error,
 525                int flags)
 526 {
 527     return wxDoExecuteWithCapture(command, output, &error, flags);
 528 }
 529
 530 // ----------------------------------------------------------------------------
 531 // Launch default browser
 532 // ----------------------------------------------------------------------------
 533
 534 bool wxLaunchDefaultBrowser(const wxString& url)
 535 {
 536     wxString finalurl = url;
 537
 538     //if it isn't a full url, try appending http:// to it
 539     if(wxURI(url).IsReference())
 540         finalurl = wxString(wxT("http://")) + url;
 541
 542 #if defined(__WXMSW__) && wxUSE_CONFIG_NATIVE
 543
 544     wxString command;
 545
 546     // ShellExecute() always opens in the same window,
 547     // so do it manually for new window (from Mahogany)
 548     wxRegKey key(wxRegKey::HKCR, url.BeforeFirst(':') + wxT("\\shell\\open"));
 549     if ( key.Exists() )
 550     {
 551         wxRegKey keyDDE(key, wxT("DDEExec"));
 552         if ( keyDDE.Exists() )
 553         {
 554             wxString ddeTopic = wxRegKey(keyDDE, wxT("topic"));
 555
 556             // we only know the syntax of WWW_OpenURL DDE request
 557             if ( ddeTopic == wxT("WWW_OpenURL") )
 558             {
 559                 wxString ddeCmd = keyDDE;
 560
 561                 // this is a bit naive but should work as -1 can't appear
 562                 // elsewhere in the DDE topic, normally
 563                 if ( ddeCmd.Replace(wxT("-1"), wxT("0"),
 564                                     false /* only first occurence */) == 1 )
 565                 {
 566                     // and also replace the parameters
 567                     if ( ddeCmd.Replace(wxT("%1"), url, false) == 1 )
 568                     {
 569                         // magic incantation understood by wxMSW
 570                         command << wxT("WX_DDE#")
 571                                 << wxRegKey(key, wxT("command")).QueryDefaultValue() << wxT('#')
 572                                 << wxRegKey(keyDDE, wxT("application")).QueryDefaultValue()
 573                                 << wxT('#') << ddeTopic << wxT('#')
 574                                 << ddeCmd;
 575                     }
 576                 }
 577             }
 578         }
 579     }
 580
 581     //Try wxExecute - if it doesn't work or the regkey stuff
 582     //above failed, fallback to opening the file in the same
 583     //browser window
 584     if ( command.empty() || wxExecute(command) == -1)
 585     {
 586         // CYGWIN and MINGW may have problems - so load ShellExecute
 587         // dynamically
 588         typedef HINSTANCE (*LPShellExecute)(HWND hwnd, const wxChar* lpOperation,
 589                                             const wxChar* lpFile,
 590                                             const wxChar* lpParameters,
 591                                             const wxChar* lpDirectory,
 592                                             INT nShowCmd);
 593
 594         HINSTANCE hShellDll = ::LoadLibrary(wxT("shell32.dll"));
 595         if(hShellDll == NULL)
 596             return false;
 597
 598         LPShellExecute lpShellExecute =
 599             (LPShellExecute) ::GetProcAddress(hShellDll,
 600             wxString::Format(wxT("ShellExecute%s"),
 601
 602 #ifdef __WXUNICODE__
 603             wxT("W")
 604 #else
 605             wxT("A")
 606 #endif
 607 #ifdef __WXWINCE__
 608                              )
 609 #else
 610                              ).mb_str(wxConvLocal)
 611 #endif
 612                              );
 613         if(lpShellExecute == NULL)
 614             return false;
 615
 616         // Windows sometimes doesn't open the browser correctly when using mime
 617         // types, so do ShellExecute - i.e. start <url> (from James Carroll)
 618         unsigned int nResult = (int) (*lpShellExecute)(NULL, NULL, finalurl.c_str(),
 619                                                        NULL, wxT(""), SW_SHOWNORMAL);
 620
 621         // Unload Shell32.dll
 622         ::FreeLibrary(hShellDll);
 623
 624         // Hack for Firefox (returns file not found for some reason)
 625         // from Angelo Mandato's wxHyperlinksCtrl
 626         // HINSTANCE_ERROR == 32
 627         if (nResult <= HINSTANCE_ERROR && nResult != SE_ERR_FNF)
 628             return false;
 629
 630 #ifdef __WXDEBUG__
 631         // Log something if SE_ERR_FNF happens
 632         if(nResult == SE_ERR_FNF)
 633             wxLogDebug(wxT("Got SE_ERR_FNF from ShellExecute - maybe FireFox"));
 634 #endif
 635     }
 636
 637 #elif wxUSE_MIMETYPE
 638
 639     // Non-windows way
 640     wxFileType *ft = wxTheMimeTypesManager->GetFileTypeFromExtension (_T("html"));
 641     if (!ft)
 642     {
 643         wxLogError(_T("No default application can open .html extension"));
 644         return false;
 645     }
 646
 647     wxString mt;
 648     ft->GetMimeType(&mt);
 649
 650     wxString cmd;
 651     bool ok = ft->GetOpenCommand (&cmd, wxFileType::MessageParameters(finalurl));
 652     delete ft;
 653
 654     if (ok)
 655     {
 656         if( wxExecute (cmd, wxEXEC_ASYNC) == -1 )
 657         {
 658             wxLogError(_T("Failed to launch application for wxLaunchDefaultBrowser"));
 659             return false;
 660         }
 661     }
 662     else
 663         return false;
 664
 665 #else // !wxUSE_MIMETYPE && !(WXMSW && wxUSE_NATIVE_CONFIG)
 666
 667         return false;
 668
 669 #endif
 670
 671     //success - hopefully
 672     return true;
 673 }
 674
 675 // ----------------------------------------------------------------------------
 676 // wxApp::Yield() wrappers for backwards compatibility
 677 // ----------------------------------------------------------------------------
 678
 679 bool wxYield()
 680 {
 681     return wxTheApp && wxTheApp->Yield();
 682 }
 683
 684 bool wxYieldIfNeeded()
 685 {
 686     return wxTheApp && wxTheApp->Yield(true);
 687 }
 688
 689 #endif // wxUSE_BASE
 690
 691 // ============================================================================
 692 // GUI-only functions from now on
 693 // ============================================================================
 694
 695 #if wxUSE_GUI
 696
 697 // Id generation
 698 static long wxCurrentId = 100;
 699
 700 long wxNewId()
 701 {
 702     // skip the part of IDs space that contains hard-coded values:
 703     if (wxCurrentId == wxID_LOWEST)
 704         wxCurrentId = wxID_HIGHEST + 1;
 705
 706     return wxCurrentId++;
 707 }
 708
 709 long
 710 wxGetCurrentId(void) { return wxCurrentId; }
 711
 712 void
 713 wxRegisterId (long id)
 714 {
 715   if (id >= wxCurrentId)
 716     wxCurrentId = id + 1;
 717 }
 718
 719 #if wxUSE_MENUS
 720
 721 // ----------------------------------------------------------------------------
 722 // Menu accelerators related functions
 723 // ----------------------------------------------------------------------------
 724
 725 wxChar *wxStripMenuCodes(const wxChar *in, wxChar *out)
 726 {
 727     wxString s = wxMenuItem::GetLabelFromText(in);
 728     if ( out )
 729     {
 730         // go smash their buffer if it's not big enough - I love char * params
 731         memcpy(out, s.c_str(), s.length() * sizeof(wxChar));
 732     }
 733     else
 734     {
 735         // MYcopystring - for easier search...
 736         out = new wxChar[s.length() + 1];
 737         wxStrcpy(out, s.c_str());
 738     }
 739
 740     return out;
 741 }
 742
 743 wxString wxStripMenuCodes(const wxString& in)
 744 {
 745     wxString out;
 746
 747     size_t len = in.length();
 748     out.reserve(len);
 749
 750     for ( size_t n = 0; n < len; n++ )
 751     {
 752         wxChar ch = in[n];
 753         if ( ch == _T('&') )
 754         {
 755             // skip it, it is used to introduce the accel char (or to quote
 756             // itself in which case it should still be skipped): note that it
 757             // can't be the last character of the string
 758             if ( ++n == len )
 759             {
 760                 wxLogDebug(_T("Invalid menu string '%s'"), in.c_str());
 761             }
 762             else
 763             {
 764                 // use the next char instead
 765                 ch = in[n];
 766             }
 767         }
 768         else if ( ch == _T('\t') )
 769         {
 770             // everything after TAB is accel string, exit the loop
 771             break;
 772         }
 773
 774         out += ch;
 775     }
 776
 777     return out;
 778 }
 779
 780 #endif // wxUSE_MENUS
 781
 782 // ----------------------------------------------------------------------------
 783 // Window search functions
 784 // ----------------------------------------------------------------------------
 785
 786 /*
 787  * If parent is non-NULL, look through children for a label or title
 788  * matching the specified string. If NULL, look through all top-level windows.
 789  *
 790  */
 791
 792 wxWindow *
 793 wxFindWindowByLabel (const wxString& title, wxWindow * parent)
 794 {
 795     return wxWindow::FindWindowByLabel( title, parent );
 796 }
 797
 798
 799 /*
 800  * If parent is non-NULL, look through children for a name
 801  * matching the specified string. If NULL, look through all top-level windows.
 802  *
 803  */
 804
 805 wxWindow *
 806 wxFindWindowByName (const wxString& name, wxWindow * parent)
 807 {
 808     return wxWindow::FindWindowByName( name, parent );
 809 }
 810
 811 // Returns menu item id or wxNOT_FOUND if none.
 812 int
 813 wxFindMenuItemId (wxFrame * frame, const wxString& menuString, const wxString& itemString)
 814 {
 815 #if wxUSE_MENUS
 816   wxMenuBar *menuBar = frame->GetMenuBar ();
 817   if ( menuBar )
 818       return menuBar->FindMenuItem (menuString, itemString);
 819 #endif // wxUSE_MENUS
 820
 821   return wxNOT_FOUND;
 822 }
 823
 824 // Try to find the deepest child that contains 'pt'.
 825 // We go backwards, to try to allow for controls that are spacially
 826 // within other controls, but are still siblings (e.g. buttons within
 827 // static boxes). Static boxes are likely to be created _before_ controls
 828 // that sit inside them.
 829 wxWindow* wxFindWindowAtPoint(wxWindow* win, const wxPoint& pt)
 830 {
 831     if (!win->IsShown())
 832         return NULL;
 833
 834     // Hack for wxNotebook case: at least in wxGTK, all pages
 835     // claim to be shown, so we must only deal with the selected one.
 836 #if wxUSE_NOTEBOOK
 837     if (win->IsKindOf(CLASSINFO(wxNotebook)))
 838     {
 839       wxNotebook* nb = (wxNotebook*) win;
 840       int sel = nb->GetSelection();
 841       if (sel >= 0)
 842       {
 843         wxWindow* child = nb->GetPage(sel);
 844         wxWindow* foundWin = wxFindWindowAtPoint(child, pt);
 845         if (foundWin)
 846            return foundWin;
 847       }
 848     }
 849 #endif
 850
 851     wxWindowList::compatibility_iterator node = win->GetChildren().GetLast();
 852     while (node)
 853     {
 854         wxWindow* child = node->GetData();
 855         wxWindow* foundWin = wxFindWindowAtPoint(child, pt);
 856         if (foundWin)
 857           return foundWin;
 858         node = node->GetPrevious();
 859     }
 860
 861     wxPoint pos = win->GetPosition();
 862     wxSize sz = win->GetSize();
 863     if (win->GetParent())
 864     {
 865         pos = win->GetParent()->ClientToScreen(pos);
 866     }
 867
 868     wxRect rect(pos, sz);
 869     if (rect.Inside(pt))
 870         return win;
 871     else
 872         return NULL;
 873 }
 874
 875 wxWindow* wxGenericFindWindowAtPoint(const wxPoint& pt)
 876 {
 877     // Go backwards through the list since windows
 878     // on top are likely to have been appended most
 879     // recently.
 880     wxWindowList::compatibility_iterator node = wxTopLevelWindows.GetLast();
 881     while (node)
 882     {
 883         wxWindow* win = node->GetData();
 884         wxWindow* found = wxFindWindowAtPoint(win, pt);
 885         if (found)
 886             return found;
 887         node = node->GetPrevious();
 888     }
 889     return NULL;
 890 }
 891
 892 // ----------------------------------------------------------------------------
 893 // GUI helpers
 894 // ----------------------------------------------------------------------------
 895
 896 /*
 897  * N.B. these convenience functions must be separate from msgdlgg.cpp, textdlgg.cpp
 898  * since otherwise the generic code may be pulled in unnecessarily.
 899  */
 900
 901 #if wxUSE_MSGDLG
 902
 903 int wxMessageBox(const wxString& message, const wxString& caption, long style,
 904                  wxWindow *parent, int WXUNUSED(x), int WXUNUSED(y) )
 905 {
 906     long decorated_style = style;
 907
 908     if ( ( style & ( wxICON_EXCLAMATION | wxICON_HAND | wxICON_INFORMATION | wxICON_QUESTION ) ) == 0 )
 909     {
 910         decorated_style |= ( style & wxYES ) ? wxICON_QUESTION : wxICON_INFORMATION ;
 911     }
 912
 913     wxMessageDialog dialog(parent, message, caption, decorated_style);
 914
 915     int ans = dialog.ShowModal();
 916     switch ( ans )
 917     {
 918         case wxID_OK:
 919             return wxOK;
 920         case wxID_YES:
 921             return wxYES;
 922         case wxID_NO:
 923             return wxNO;
 924         case wxID_CANCEL:
 925             return wxCANCEL;
 926     }
 927
 928     wxFAIL_MSG( _T("unexpected return code from wxMessageDialog") );
 929
 930     return wxCANCEL;
 931 }
 932
 933 #endif // wxUSE_MSGDLG
 934
 935 #if wxUSE_TEXTDLG
 936
 937 wxString wxGetTextFromUser(const wxString& message, const wxString& caption,
 938                         const wxString& defaultValue, wxWindow *parent,
 939                         wxCoord x, wxCoord y, bool centre )
 940 {
 941     wxString str;
 942     long style = wxTextEntryDialogStyle;
 943
 944     if (centre)
 945         style |= wxCENTRE;
 946     else
 947         style &= ~wxCENTRE;
 948
 949     wxTextEntryDialog dialog(parent, message, caption, defaultValue, style, wxPoint(x, y));
 950
 951     if (dialog.ShowModal() == wxID_OK)
 952     {
 953         str = dialog.GetValue();
 954     }
 955
 956     return str;
 957 }
 958
 959 wxString wxGetPasswordFromUser(const wxString& message,
 960                                const wxString& caption,
 961                                const wxString& defaultValue,
 962                                wxWindow *parent,
 963                                wxCoord x, wxCoord y, bool centre )
 964 {
 965     wxString str;
 966     long style = wxTextEntryDialogStyle;
 967
 968     if (centre)
 969         style |= wxCENTRE;
 970     else
 971         style &= ~wxCENTRE;
 972
 973     wxPasswordEntryDialog dialog(parent, message, caption, defaultValue,
 974                              style, wxPoint(x, y));
 975     if ( dialog.ShowModal() == wxID_OK )
 976     {
 977         str = dialog.GetValue();
 978     }
 979
 980     return str;
 981 }
 982
 983 #endif // wxUSE_TEXTDLG
 984
 985 #if wxUSE_COLOURDLG
 986
 987 wxColour wxGetColourFromUser(wxWindow *parent, const wxColour& colInit)
 988 {
 989     wxColourData data;
 990     data.SetChooseFull(true);
 991     if ( colInit.Ok() )
 992     {
 993         data.SetColour((wxColour &)colInit); // const_cast
 994     }
 995
 996     wxColour colRet;
 997     wxColourDialog dialog(parent, &data);
 998     if ( dialog.ShowModal() == wxID_OK )
 999     {
1000         colRet = dialog.GetColourData().GetColour();
1001     }
1002     //else: leave it invalid
1003
1004     return colRet;
1005 }
1006
1007 #endif // wxUSE_COLOURDLG
1008
1009 #if wxUSE_FONTDLG
1010
1011 wxFont wxGetFontFromUser(wxWindow *parent, const wxFont& fontInit)
1012 {
1013     wxFontData data;
1014     if ( fontInit.Ok() )
1015     {
1016         data.SetInitialFont(fontInit);
1017     }
1018
1019     wxFont fontRet;
1020     wxFontDialog dialog(parent, data);
1021     if ( dialog.ShowModal() == wxID_OK )
1022     {
1023         fontRet = dialog.GetFontData().GetChosenFont();
1024     }
1025     //else: leave it invalid
1026
1027     return fontRet;
1028 }
1029
1030 #endif // wxUSE_FONTDLG
1031
1032 // ----------------------------------------------------------------------------
1033 // wxSafeYield and supporting functions
1034 // ----------------------------------------------------------------------------
1035
1036 void wxEnableTopLevelWindows(bool enable)
1037 {
1038     wxWindowList::compatibility_iterator node;
1039     for ( node = wxTopLevelWindows.GetFirst(); node; node = node->GetNext() )
1040         node->GetData()->Enable(enable);
1041 }
1042
1043 wxWindowDisabler::wxWindowDisabler(wxWindow *winToSkip)
1044 {
1045     // remember the top level windows which were already disabled, so that we
1046     // don't reenable them later
1047     m_winDisabled = NULL;
1048
1049     wxWindowList::compatibility_iterator node;
1050     for ( node = wxTopLevelWindows.GetFirst(); node; node = node->GetNext() )
1051     {
1052         wxWindow *winTop = node->GetData();
1053         if ( winTop == winToSkip )
1054             continue;
1055
1056         // we don't need to disable the hidden or already disabled windows
1057         if ( winTop->IsEnabled() && winTop->IsShown() )
1058         {
1059             winTop->Disable();
1060         }
1061         else
1062         {
1063             if ( !m_winDisabled )
1064             {
1065                 m_winDisabled = new wxWindowList;
1066             }
1067
1068             m_winDisabled->Append(winTop);
1069         }
1070     }
1071 }
1072
1073 wxWindowDisabler::~wxWindowDisabler()
1074 {
1075     wxWindowList::compatibility_iterator node;
1076     for ( node = wxTopLevelWindows.GetFirst(); node; node = node->GetNext() )
1077     {
1078         wxWindow *winTop = node->GetData();
1079         if ( !m_winDisabled || !m_winDisabled->Find(winTop) )
1080         {
1081             winTop->Enable();
1082         }
1083         //else: had been already disabled, don't reenable
1084     }
1085
1086     delete m_winDisabled;
1087 }
1088
1089 // Yield to other apps/messages and disable user input to all windows except
1090 // the given one
1091 bool wxSafeYield(wxWindow *win, bool onlyIfNeeded)
1092 {
1093     wxWindowDisabler wd(win);
1094
1095     bool rc;
1096     if (onlyIfNeeded)
1097         rc = wxYieldIfNeeded();
1098     else
1099         rc = wxYield();
1100
1101     return rc;
1102 }
1103
1104 // Don't synthesize KeyUp events holding down a key and producing KeyDown
1105 // events with autorepeat. On by default and always on in wxMSW. wxGTK version
1106 // in utilsgtk.cpp.
1107 #ifndef __WXGTK__
1108 bool wxSetDetectableAutoRepeat( bool WXUNUSED(flag) )
1109 {
1110     return true;    // detectable auto-repeat is the only mode MSW supports
1111 }
1112 #endif // !wxGTK
1113
1114 #endif // wxUSE_GUI
1115