src/common/utilscmn.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/common/utilscmn.cpp
   3 // Purpose:     Miscellaneous utility functions and classes
   4 // Author:      Julian Smart
   5 // Modified by:
   6 // Created:     29/01/98
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) 1998 Julian Smart
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 // ============================================================================
  13 // declarations
  14 // ============================================================================
  15
  16 // ----------------------------------------------------------------------------
  17 // headers
  18 // ----------------------------------------------------------------------------
  19
  20 // For compilers that support precompilation, includes "wx.h".
  21 #include "wx/wxprec.h"
  22
  23 #ifdef __BORLANDC__
  24     #pragma hdrstop
  25 #endif
  26
  27 #ifndef WX_PRECOMP
  28     #include "wx/app.h"
  29     #include "wx/string.h"
  30     #include "wx/utils.h"
  31     #include "wx/intl.h"
  32     #include "wx/log.h"
  33
  34     #if wxUSE_GUI
  35         #include "wx/window.h"
  36         #include "wx/frame.h"
  37         #include "wx/menu.h"
  38         #include "wx/msgdlg.h"
  39         #include "wx/textdlg.h"
  40         #include "wx/textctrl.h"    // for wxTE_PASSWORD
  41         #if wxUSE_ACCEL
  42             #include "wx/menuitem.h"
  43             #include "wx/accel.h"
  44         #endif // wxUSE_ACCEL
  45     #endif // wxUSE_GUI
  46 #endif // WX_PRECOMP
  47
  48 #include "wx/apptrait.h"
  49
  50 #include "wx/process.h"
  51 #include "wx/txtstrm.h"
  52 #include "wx/uri.h"
  53 #include "wx/mimetype.h"
  54 #include "wx/config.h"
  55
  56 #if defined(__WXWINCE__) && wxUSE_DATETIME
  57 #include "wx/datetime.h"
  58 #endif
  59
  60 #include <ctype.h>
  61 #include <stdio.h>
  62 #include <stdlib.h>
  63 #include <string.h>
  64
  65 #if !wxONLY_WATCOM_EARLIER_THAN(1,4)
  66     #if !(defined(_MSC_VER) && (_MSC_VER > 800))
  67         #include <errno.h>
  68     #endif
  69 #endif
  70
  71 #if wxUSE_GUI
  72     #include "wx/colordlg.h"
  73     #include "wx/fontdlg.h"
  74     #include "wx/notebook.h"
  75     #include "wx/frame.h"
  76     #include "wx/statusbr.h"
  77 #endif // wxUSE_GUI
  78
  79 #ifndef __WXWINCE__
  80 #include <time.h>
  81 #else
  82 #include "wx/msw/wince/time.h"
  83 #endif
  84
  85 #ifdef __WXMAC__
  86 #include "wx/mac/private.h"
  87 #ifndef __DARWIN__
  88 #include "InternetConfig.h"
  89 #endif
  90 #endif
  91
  92 #if !defined(__MWERKS__) && !defined(__WXWINCE__)
  93     #include <sys/types.h>
  94     #include <sys/stat.h>
  95 #endif
  96
  97 #if defined(__WXMSW__)
  98     #include "wx/msw/private.h"
  99     #include "wx/msw/registry.h"
 100 #endif
 101
 102 #if wxUSE_BASE
 103
 104 // ----------------------------------------------------------------------------
 105 // common data
 106 // ----------------------------------------------------------------------------
 107
 108 // ============================================================================
 109 // implementation
 110 // ============================================================================
 111
 112 #if WXWIN_COMPATIBILITY_2_4
 113
 114 wxChar *
 115 copystring (const wxChar *s)
 116 {
 117     if (s == NULL) s = wxEmptyString;
 118     size_t len = wxStrlen (s) + 1;
 119
 120     wxChar *news = new wxChar[len];
 121     memcpy (news, s, len * sizeof(wxChar));    // Should be the fastest
 122
 123     return news;
 124 }
 125
 126 #endif // WXWIN_COMPATIBILITY_2_4
 127
 128 // ----------------------------------------------------------------------------
 129 // String <-> Number conversions (deprecated)
 130 // ----------------------------------------------------------------------------
 131
 132 #if WXWIN_COMPATIBILITY_2_4
 133
 134 WXDLLIMPEXP_DATA_BASE(const wxChar *) wxFloatToStringStr = wxT("%.2f");
 135 WXDLLIMPEXP_DATA_BASE(const wxChar *) wxDoubleToStringStr = wxT("%.2f");
 136
 137 void
 138 StringToFloat (const wxChar *s, float *number)
 139 {
 140     if (s && *s && number)
 141         *number = (float) wxStrtod (s, (wxChar **) NULL);
 142 }
 143
 144 void
 145 StringToDouble (const wxChar *s, double *number)
 146 {
 147     if (s && *s && number)
 148         *number = wxStrtod (s, (wxChar **) NULL);
 149 }
 150
 151 wxChar *
 152 FloatToString (float number, const wxChar *fmt)
 153 {
 154     static wxChar buf[256];
 155
 156     wxSprintf (buf, fmt, number);
 157     return buf;
 158 }
 159
 160 wxChar *
 161 DoubleToString (double number, const wxChar *fmt)
 162 {
 163     static wxChar buf[256];
 164
 165     wxSprintf (buf, fmt, number);
 166     return buf;
 167 }
 168
 169 void
 170 StringToInt (const wxChar *s, int *number)
 171 {
 172     if (s && *s && number)
 173         *number = (int) wxStrtol (s, (wxChar **) NULL, 10);
 174 }
 175
 176 void
 177 StringToLong (const wxChar *s, long *number)
 178 {
 179     if (s && *s && number)
 180         *number = wxStrtol (s, (wxChar **) NULL, 10);
 181 }
 182
 183 wxChar *
 184 IntToString (int number)
 185 {
 186     static wxChar buf[20];
 187
 188     wxSprintf (buf, wxT("%d"), number);
 189     return buf;
 190 }
 191
 192 wxChar *
 193 LongToString (long number)
 194 {
 195     static wxChar buf[20];
 196
 197     wxSprintf (buf, wxT("%ld"), number);
 198     return buf;
 199 }
 200
 201 #endif // WXWIN_COMPATIBILITY_2_4
 202
 203 // Array used in DecToHex conversion routine.
 204 static wxChar hexArray[] = wxT("0123456789ABCDEF");
 205
 206 // Convert 2-digit hex number to decimal
 207 int wxHexToDec(const wxString& buf)
 208 {
 209     int firstDigit, secondDigit;
 210
 211     if (buf.GetChar(0) >= wxT('A'))
 212         firstDigit = buf.GetChar(0) - wxT('A') + 10;
 213     else
 214        firstDigit = buf.GetChar(0) - wxT('0');
 215
 216     if (buf.GetChar(1) >= wxT('A'))
 217         secondDigit = buf.GetChar(1) - wxT('A') + 10;
 218     else
 219         secondDigit = buf.GetChar(1) - wxT('0');
 220
 221     return (firstDigit & 0xF) * 16 + (secondDigit & 0xF );
 222 }
 223
 224 // Convert decimal integer to 2-character hex string
 225 void wxDecToHex(int dec, wxChar *buf)
 226 {
 227     int firstDigit = (int)(dec/16.0);
 228     int secondDigit = (int)(dec - (firstDigit*16.0));
 229     buf[0] = hexArray[firstDigit];
 230     buf[1] = hexArray[secondDigit];
 231     buf[2] = 0;
 232 }
 233
 234 // Convert decimal integer to 2-character hex string
 235 wxString wxDecToHex(int dec)
 236 {
 237     wxChar buf[3];
 238     wxDecToHex(dec, buf);
 239     return wxString(buf);
 240 }
 241
 242 // ----------------------------------------------------------------------------
 243 // misc functions
 244 // ----------------------------------------------------------------------------
 245
 246 // Return the current date/time
 247 wxString wxNow()
 248 {
 249 #ifdef __WXWINCE__
 250 #if wxUSE_DATETIME
 251     wxDateTime now = wxDateTime::Now();
 252     return now.Format();
 253 #else
 254     return wxEmptyString;
 255 #endif
 256 #else
 257     time_t now = time((time_t *) NULL);
 258     char *date = ctime(&now);
 259     date[24] = '\0';
 260     return wxString::FromAscii(date);
 261 #endif
 262 }
 263
 264 void wxUsleep(unsigned long milliseconds)
 265 {
 266     wxMilliSleep(milliseconds);
 267 }
 268
 269 const wxChar *wxGetInstallPrefix()
 270 {
 271     wxString prefix;
 272
 273     if ( wxGetEnv(wxT("WXPREFIX"), &prefix) )
 274         return prefix.c_str();
 275
 276 #ifdef wxINSTALL_PREFIX
 277     return wxT(wxINSTALL_PREFIX);
 278 #else
 279     return wxEmptyString;
 280 #endif
 281 }
 282
 283 wxString wxGetDataDir()
 284 {
 285     wxString dir = wxGetInstallPrefix();
 286     dir <<  wxFILE_SEP_PATH << wxT("share") << wxFILE_SEP_PATH << wxT("wx");
 287     return dir;
 288 }
 289
 290 int wxGetOsVersion(int *verMaj, int *verMin)
 291 {
 292     // we want this function to work even if there is no wxApp
 293     wxConsoleAppTraits traitsConsole;
 294     wxAppTraits *traits = wxTheApp ? wxTheApp->GetTraits() : NULL;
 295     if ( ! traits )
 296         traits = &traitsConsole;
 297
 298     wxToolkitInfo& info = traits->GetToolkitInfo();
 299     if ( verMaj )
 300         *verMaj = info.versionMajor;
 301     if ( verMin )
 302         *verMin = info.versionMinor;
 303     return info.os;
 304 }
 305
 306 // ----------------------------------------------------------------------------
 307 // network and user id functions
 308 // ----------------------------------------------------------------------------
 309
 310 // Get Full RFC822 style email address
 311 bool wxGetEmailAddress(wxChar *address, int maxSize)
 312 {
 313     wxString email = wxGetEmailAddress();
 314     if ( !email )
 315         return false;
 316
 317     wxStrncpy(address, email, maxSize - 1);
 318     address[maxSize - 1] = wxT('\0');
 319
 320     return true;
 321 }
 322
 323 wxString wxGetEmailAddress()
 324 {
 325     wxString email;
 326
 327     wxString host = wxGetFullHostName();
 328     if ( !host.empty() )
 329     {
 330         wxString user = wxGetUserId();
 331         if ( !user.empty() )
 332         {
 333             email << user << wxT('@') << host;
 334         }
 335     }
 336
 337     return email;
 338 }
 339
 340 wxString wxGetUserId()
 341 {
 342     static const int maxLoginLen = 256; // FIXME arbitrary number
 343
 344     wxString buf;
 345     bool ok = wxGetUserId(wxStringBuffer(buf, maxLoginLen), maxLoginLen);
 346
 347     if ( !ok )
 348         buf.Empty();
 349
 350     return buf;
 351 }
 352
 353 wxString wxGetUserName()
 354 {
 355     static const int maxUserNameLen = 1024; // FIXME arbitrary number
 356
 357     wxString buf;
 358     bool ok = wxGetUserName(wxStringBuffer(buf, maxUserNameLen), maxUserNameLen);
 359
 360     if ( !ok )
 361         buf.Empty();
 362
 363     return buf;
 364 }
 365
 366 wxString wxGetHostName()
 367 {
 368     static const size_t hostnameSize = 257;
 369
 370     wxString buf;
 371     bool ok = wxGetHostName(wxStringBuffer(buf, hostnameSize), hostnameSize);
 372
 373     if ( !ok )
 374         buf.Empty();
 375
 376     return buf;
 377 }
 378
 379 wxString wxGetFullHostName()
 380 {
 381     static const size_t hostnameSize = 257;
 382
 383     wxString buf;
 384     bool ok = wxGetFullHostName(wxStringBuffer(buf, hostnameSize), hostnameSize);
 385
 386     if ( !ok )
 387         buf.Empty();
 388
 389     return buf;
 390 }
 391
 392 wxString wxGetHomeDir()
 393 {
 394     wxString home;
 395     wxGetHomeDir(&home);
 396
 397     return home;
 398 }
 399
 400 #if 0
 401
 402 wxString wxGetCurrentDir()
 403 {
 404     wxString dir;
 405     size_t len = 1024;
 406     bool ok;
 407     do
 408     {
 409         ok = getcwd(dir.GetWriteBuf(len + 1), len) != NULL;
 410         dir.UngetWriteBuf();
 411
 412         if ( !ok )
 413         {
 414             if ( errno != ERANGE )
 415             {
 416                 wxLogSysError(_T("Failed to get current directory"));
 417
 418                 return wxEmptyString;
 419             }
 420             else
 421             {
 422                 // buffer was too small, retry with a larger one
 423                 len *= 2;
 424             }
 425         }
 426         //else: ok
 427     } while ( !ok );
 428
 429     return dir;
 430 }
 431
 432 #endif // 0
 433
 434 // ----------------------------------------------------------------------------
 435 // wxExecute
 436 // ----------------------------------------------------------------------------
 437
 438 // wxDoExecuteWithCapture() helper: reads an entire stream into one array
 439 //
 440 // returns true if ok, false if error
 441 #if wxUSE_STREAMS
 442 static bool ReadAll(wxInputStream *is, wxArrayString& output)
 443 {
 444     wxCHECK_MSG( is, false, _T("NULL stream in wxExecute()?") );
 445
 446     // the stream could be already at EOF or in wxSTREAM_BROKEN_PIPE state
 447     is->Reset();
 448
 449     wxTextInputStream tis(*is);
 450
 451     bool cont = true;
 452     while ( cont )
 453     {
 454         wxString line = tis.ReadLine();
 455         if ( is->Eof() )
 456             break;
 457
 458         if ( !*is )
 459         {
 460             cont = false;
 461         }
 462         else
 463         {
 464             output.Add(line);
 465         }
 466     }
 467
 468     return cont;
 469 }
 470 #endif // wxUSE_STREAMS
 471
 472 // this is a private function because it hasn't a clean interface: the first
 473 // array is passed by reference, the second by pointer - instead we have 2
 474 // public versions of wxExecute() below
 475 static long wxDoExecuteWithCapture(const wxString& command,
 476                                    wxArrayString& output,
 477                                    wxArrayString* error,
 478                                    int flags)
 479 {
 480     // create a wxProcess which will capture the output
 481     wxProcess *process = new wxProcess;
 482     process->Redirect();
 483
 484     long rc = wxExecute(command, wxEXEC_SYNC | flags, process);
 485
 486 #if wxUSE_STREAMS
 487     if ( rc != -1 )
 488     {
 489         if ( !ReadAll(process->GetInputStream(), output) )
 490             rc = -1;
 491
 492         if ( error )
 493         {
 494             if ( !ReadAll(process->GetErrorStream(), *error) )
 495                 rc = -1;
 496         }
 497
 498     }
 499 #else
 500     wxUnusedVar(output);
 501     wxUnusedVar(error);
 502 #endif // wxUSE_STREAMS/!wxUSE_STREAMS
 503
 504     delete process;
 505
 506     return rc;
 507 }
 508
 509 long wxExecute(const wxString& command, wxArrayString& output, int flags)
 510 {
 511     return wxDoExecuteWithCapture(command, output, NULL, flags);
 512 }
 513
 514 long wxExecute(const wxString& command,
 515                wxArrayString& output,
 516                wxArrayString& error,
 517                int flags)
 518 {
 519     return wxDoExecuteWithCapture(command, output, &error, flags);
 520 }
 521
 522 // ----------------------------------------------------------------------------
 523 // Launch default browser
 524 // ----------------------------------------------------------------------------
 525
 526 bool wxLaunchDefaultBrowser(const wxString& urlOrig, int flags)
 527 {
 528     wxUnusedVar(flags);
 529
 530     // set the scheme of url to http if it does not have one
 531     wxString url(urlOrig);
 532     if ( !wxURI(url).HasScheme() )
 533         url.Prepend(wxT("http://"));
 534
 535 #if defined(__WXMSW__)
 536
 537 #if wxUSE_IPC
 538     if ( flags & wxBROWSER_NEW_WINDOW )
 539     {
 540         // ShellExecuteEx() opens the URL in an existing window by default so
 541         // we can't use it if we need a new window
 542         wxRegKey key(wxRegKey::HKCR, url.BeforeFirst(':') + _T("\\shell\\open"));
 543         if ( key.Exists() )
 544         {
 545             wxRegKey keyDDE(key, wxT("DDEExec"));
 546             if ( keyDDE.Exists() )
 547             {
 548                 const wxString ddeTopic = wxRegKey(keyDDE, wxT("topic"));
 549
 550                 // we only know the syntax of WWW_OpenURL DDE request for IE,
 551                 // optimistically assume that all other browsers are compatible
 552                 // with it
 553                 wxString ddeCmd;
 554                 bool ok = ddeTopic == wxT("WWW_OpenURL");
 555                 if ( ok )
 556                 {
 557                     ddeCmd = keyDDE.QueryDefaultValue();
 558                     ok = !ddeCmd.empty();
 559                 }
 560
 561                 if ( ok )
 562                 {
 563                     // for WWW_OpenURL, the index of the window to open the URL
 564                     // in is -1 (meaning "current") by default, replace it with
 565                     // 0 which means "new" (see KB article 160957)
 566                     ok = ddeCmd.Replace(wxT("-1"), wxT("0"),
 567                                         false /* only first occurence */) == 1;
 568                 }
 569
 570                 if ( ok )
 571                 {
 572                     // and also replace the parameters: the topic should
 573                     // contain a placeholder for the URL
 574                     ok = ddeCmd.Replace(wxT("%1"), url, false) == 1;
 575                 }
 576
 577                 if ( ok )
 578                 {
 579                     // try to send it the DDE request now but ignore the errors
 580                     wxLogNull noLog;
 581
 582                     const wxString ddeServer = wxRegKey(keyDDE, wxT("application"));
 583                     if ( wxExecuteDDE(ddeServer, ddeTopic, ddeCmd) )
 584                         return true;
 585
 586                     // this is not necessarily an error: maybe browser is
 587                     // simply not running, but no matter, in any case we're
 588                     // going to launch it using ShellExecuteEx() below now and
 589                     // we shouldn't try to open a new window if we open a new
 590                     // browser anyhow
 591                 }
 592             }
 593         }
 594     }
 595 #endif // wxUSE_IPC
 596
 597     WinStruct<SHELLEXECUTEINFO> sei;
 598     sei.lpFile = url.c_str();
 599     sei.lpVerb = _T("open");
 600     sei.nShow = SW_SHOWNORMAL;
 601
 602     ::ShellExecuteEx(&sei);
 603
 604     const int nResult = (int) sei.hInstApp;
 605
 606     // Firefox returns file not found for some reason, so make an exception
 607     // for it
 608     if ( nResult > 32 || nResult == SE_ERR_FNF )
 609     {
 610 #ifdef __WXDEBUG__
 611         // Log something if SE_ERR_FNF happens
 612         if ( nResult == SE_ERR_FNF )
 613             wxLogDebug(wxT("SE_ERR_FNF from ShellExecute -- maybe FireFox?"));
 614 #endif // __WXDEBUG__
 615         return true;
 616     }
 617 #elif defined(__WXMAC__)
 618     OSStatus err;
 619     ICInstance inst;
 620     SInt32 startSel;
 621     SInt32 endSel;
 622
 623     err = ICStart(&inst, 'STKA'); // put your app creator code here
 624     if (err == noErr) {
 625 #if !TARGET_CARBON
 626         err = ICFindConfigFile(inst, 0, nil);
 627 #endif
 628         if (err == noErr)
 629         {
 630             ConstStr255Param hint = 0;
 631             startSel = 0;
 632             endSel = url.Length();
 633             err = ICLaunchURL(inst, hint, url.fn_str(), endSel, &startSel, &endSel);
 634             if (err != noErr)
 635                 wxLogDebug(wxT("ICLaunchURL error %d"), (int) err);
 636         }
 637         ICStop(inst);
 638         return true;
 639     }
 640     else
 641     {
 642         wxLogDebug(wxT("ICStart error %d"), (int) err);
 643         return false;
 644     }
 645 #elif wxUSE_MIMETYPE
 646     // Non-windows way
 647     wxFileType *ft = wxTheMimeTypesManager->GetFileTypeFromExtension (_T("html"));
 648     if ( ft )
 649     {
 650         wxString mt;
 651         ft->GetMimeType(&mt);
 652
 653         wxString cmd;
 654         bool ok = ft->GetOpenCommand(&cmd, wxFileType::MessageParameters(url));
 655         delete ft;
 656
 657         if ( !ok || cmd.empty() )
 658         {
 659             // fallback to checking for the BROWSER environment variable
 660             cmd = wxGetenv(wxT("BROWSER"));
 661             if ( !cmd.empty() )
 662                 cmd << _T(' ') << url;
 663         }
 664
 665         if ( !cmd.empty() && wxExecute(cmd) )
 666             return true;
 667     }
 668     else // no file type for html extension
 669     {
 670         wxLogError(_T("No default application configured for HTML files."));
 671     }
 672 #endif // !wxUSE_MIMETYPE && !__WXMSW__
 673
 674     wxLogSysError(_T("Failed to open URL \"%s\" in default browser."),
 675                   url.c_str());
 676
 677     return false;
 678 }
 679
 680 // ----------------------------------------------------------------------------
 681 // wxApp::Yield() wrappers for backwards compatibility
 682 // ----------------------------------------------------------------------------
 683
 684 bool wxYield()
 685 {
 686     return wxTheApp && wxTheApp->Yield();
 687 }
 688
 689 bool wxYieldIfNeeded()
 690 {
 691     return wxTheApp && wxTheApp->Yield(true);
 692 }
 693
 694 #endif // wxUSE_BASE
 695
 696 // ============================================================================
 697 // GUI-only functions from now on
 698 // ============================================================================
 699
 700 #if wxUSE_GUI
 701
 702 // Id generation
 703 static long wxCurrentId = 100;
 704
 705 long wxNewId()
 706 {
 707     // skip the part of IDs space that contains hard-coded values:
 708     if (wxCurrentId == wxID_LOWEST)
 709         wxCurrentId = wxID_HIGHEST + 1;
 710
 711     return wxCurrentId++;
 712 }
 713
 714 long
 715 wxGetCurrentId(void) { return wxCurrentId; }
 716
 717 void
 718 wxRegisterId (long id)
 719 {
 720   if (id >= wxCurrentId)
 721     wxCurrentId = id + 1;
 722 }
 723
 724 #if wxUSE_MENUS
 725
 726 // ----------------------------------------------------------------------------
 727 // Menu accelerators related functions
 728 // ----------------------------------------------------------------------------
 729
 730 wxChar *wxStripMenuCodes(const wxChar *in, wxChar *out)
 731 {
 732     wxString s = wxMenuItem::GetLabelFromText(in);
 733     if ( out )
 734     {
 735         // go smash their buffer if it's not big enough - I love char * params
 736         memcpy(out, s.c_str(), s.length() * sizeof(wxChar));
 737     }
 738     else
 739     {
 740         // MYcopystring - for easier search...
 741         out = new wxChar[s.length() + 1];
 742         wxStrcpy(out, s.c_str());
 743     }
 744
 745     return out;
 746 }
 747
 748 wxString wxStripMenuCodes(const wxString& in)
 749 {
 750     wxString out;
 751
 752     size_t len = in.length();
 753     out.reserve(len);
 754
 755     for ( size_t n = 0; n < len; n++ )
 756     {
 757         wxChar ch = in[n];
 758         if ( ch == _T('&') )
 759         {
 760             // skip it, it is used to introduce the accel char (or to quote
 761             // itself in which case it should still be skipped): note that it
 762             // can't be the last character of the string
 763             if ( ++n == len )
 764             {
 765                 wxLogDebug(_T("Invalid menu string '%s'"), in.c_str());
 766             }
 767             else
 768             {
 769                 // use the next char instead
 770                 ch = in[n];
 771             }
 772         }
 773         else if ( ch == _T('\t') )
 774         {
 775             // everything after TAB is accel string, exit the loop
 776             break;
 777         }
 778
 779         out += ch;
 780     }
 781
 782     return out;
 783 }
 784
 785 #endif // wxUSE_MENUS
 786
 787 // ----------------------------------------------------------------------------
 788 // Window search functions
 789 // ----------------------------------------------------------------------------
 790
 791 /*
 792  * If parent is non-NULL, look through children for a label or title
 793  * matching the specified string. If NULL, look through all top-level windows.
 794  *
 795  */
 796
 797 wxWindow *
 798 wxFindWindowByLabel (const wxString& title, wxWindow * parent)
 799 {
 800     return wxWindow::FindWindowByLabel( title, parent );
 801 }
 802
 803
 804 /*
 805  * If parent is non-NULL, look through children for a name
 806  * matching the specified string. If NULL, look through all top-level windows.
 807  *
 808  */
 809
 810 wxWindow *
 811 wxFindWindowByName (const wxString& name, wxWindow * parent)
 812 {
 813     return wxWindow::FindWindowByName( name, parent );
 814 }
 815
 816 // Returns menu item id or wxNOT_FOUND if none.
 817 int
 818 wxFindMenuItemId (wxFrame * frame, const wxString& menuString, const wxString& itemString)
 819 {
 820 #if wxUSE_MENUS
 821   wxMenuBar *menuBar = frame->GetMenuBar ();
 822   if ( menuBar )
 823       return menuBar->FindMenuItem (menuString, itemString);
 824 #endif // wxUSE_MENUS
 825
 826   return wxNOT_FOUND;
 827 }
 828
 829 // Try to find the deepest child that contains 'pt'.
 830 // We go backwards, to try to allow for controls that are spacially
 831 // within other controls, but are still siblings (e.g. buttons within
 832 // static boxes). Static boxes are likely to be created _before_ controls
 833 // that sit inside them.
 834 wxWindow* wxFindWindowAtPoint(wxWindow* win, const wxPoint& pt)
 835 {
 836     if (!win->IsShown())
 837         return NULL;
 838
 839     // Hack for wxNotebook case: at least in wxGTK, all pages
 840     // claim to be shown, so we must only deal with the selected one.
 841 #if wxUSE_NOTEBOOK
 842     if (win->IsKindOf(CLASSINFO(wxNotebook)))
 843     {
 844       wxNotebook* nb = (wxNotebook*) win;
 845       int sel = nb->GetSelection();
 846       if (sel >= 0)
 847       {
 848         wxWindow* child = nb->GetPage(sel);
 849         wxWindow* foundWin = wxFindWindowAtPoint(child, pt);
 850         if (foundWin)
 851            return foundWin;
 852       }
 853     }
 854 #endif
 855
 856     wxWindowList::compatibility_iterator node = win->GetChildren().GetLast();
 857     while (node)
 858     {
 859         wxWindow* child = node->GetData();
 860         wxWindow* foundWin = wxFindWindowAtPoint(child, pt);
 861         if (foundWin)
 862           return foundWin;
 863         node = node->GetPrevious();
 864     }
 865
 866     wxPoint pos = win->GetPosition();
 867     wxSize sz = win->GetSize();
 868     if (win->GetParent())
 869     {
 870         pos = win->GetParent()->ClientToScreen(pos);
 871     }
 872
 873     wxRect rect(pos, sz);
 874     if (rect.Inside(pt))
 875         return win;
 876     else
 877         return NULL;
 878 }
 879
 880 wxWindow* wxGenericFindWindowAtPoint(const wxPoint& pt)
 881 {
 882     // Go backwards through the list since windows
 883     // on top are likely to have been appended most
 884     // recently.
 885     wxWindowList::compatibility_iterator node = wxTopLevelWindows.GetLast();
 886     while (node)
 887     {
 888         wxWindow* win = node->GetData();
 889         wxWindow* found = wxFindWindowAtPoint(win, pt);
 890         if (found)
 891             return found;
 892         node = node->GetPrevious();
 893     }
 894     return NULL;
 895 }
 896
 897 // ----------------------------------------------------------------------------
 898 // GUI helpers
 899 // ----------------------------------------------------------------------------
 900
 901 /*
 902  * N.B. these convenience functions must be separate from msgdlgg.cpp, textdlgg.cpp
 903  * since otherwise the generic code may be pulled in unnecessarily.
 904  */
 905
 906 #if wxUSE_MSGDLG
 907
 908 int wxMessageBox(const wxString& message, const wxString& caption, long style,
 909                  wxWindow *parent, int WXUNUSED(x), int WXUNUSED(y) )
 910 {
 911     long decorated_style = style;
 912
 913     if ( ( style & ( wxICON_EXCLAMATION | wxICON_HAND | wxICON_INFORMATION | wxICON_QUESTION ) ) == 0 )
 914     {
 915         decorated_style |= ( style & wxYES ) ? wxICON_QUESTION : wxICON_INFORMATION ;
 916     }
 917
 918     wxMessageDialog dialog(parent, message, caption, decorated_style);
 919
 920     int ans = dialog.ShowModal();
 921     switch ( ans )
 922     {
 923         case wxID_OK:
 924             return wxOK;
 925         case wxID_YES:
 926             return wxYES;
 927         case wxID_NO:
 928             return wxNO;
 929         case wxID_CANCEL:
 930             return wxCANCEL;
 931     }
 932
 933     wxFAIL_MSG( _T("unexpected return code from wxMessageDialog") );
 934
 935     return wxCANCEL;
 936 }
 937
 938 #endif // wxUSE_MSGDLG
 939
 940 #if wxUSE_TEXTDLG
 941
 942 wxString wxGetTextFromUser(const wxString& message, const wxString& caption,
 943                         const wxString& defaultValue, wxWindow *parent,
 944                         wxCoord x, wxCoord y, bool centre )
 945 {
 946     wxString str;
 947     long style = wxTextEntryDialogStyle;
 948
 949     if (centre)
 950         style |= wxCENTRE;
 951     else
 952         style &= ~wxCENTRE;
 953
 954     wxTextEntryDialog dialog(parent, message, caption, defaultValue, style, wxPoint(x, y));
 955
 956     if (dialog.ShowModal() == wxID_OK)
 957     {
 958         str = dialog.GetValue();
 959     }
 960
 961     return str;
 962 }
 963
 964 wxString wxGetPasswordFromUser(const wxString& message,
 965                                const wxString& caption,
 966                                const wxString& defaultValue,
 967                                wxWindow *parent,
 968                                wxCoord x, wxCoord y, bool centre )
 969 {
 970     wxString str;
 971     long style = wxTextEntryDialogStyle;
 972
 973     if (centre)
 974         style |= wxCENTRE;
 975     else
 976         style &= ~wxCENTRE;
 977
 978     wxPasswordEntryDialog dialog(parent, message, caption, defaultValue,
 979                              style, wxPoint(x, y));
 980     if ( dialog.ShowModal() == wxID_OK )
 981     {
 982         str = dialog.GetValue();
 983     }
 984
 985     return str;
 986 }
 987
 988 #endif // wxUSE_TEXTDLG
 989
 990 #if wxUSE_COLOURDLG
 991
 992 wxColour wxGetColourFromUser(wxWindow *parent, const wxColour& colInit, const wxString& caption)
 993 {
 994     wxColourData data;
 995     data.SetChooseFull(true);
 996     if ( colInit.Ok() )
 997     {
 998         data.SetColour((wxColour &)colInit); // const_cast
 999     }
1000
1001     wxColour colRet;
1002     wxColourDialog dialog(parent, &data);
1003     if (!caption.IsEmpty())
1004         dialog.SetTitle(caption);
1005     if ( dialog.ShowModal() == wxID_OK )
1006     {
1007         colRet = dialog.GetColourData().GetColour();
1008     }
1009     //else: leave it invalid
1010
1011     return colRet;
1012 }
1013
1014 #endif // wxUSE_COLOURDLG
1015
1016 #if wxUSE_FONTDLG
1017
1018 wxFont wxGetFontFromUser(wxWindow *parent, const wxFont& fontInit, const wxString& caption)
1019 {
1020     wxFontData data;
1021     if ( fontInit.Ok() )
1022     {
1023         data.SetInitialFont(fontInit);
1024     }
1025
1026     wxFont fontRet;
1027     wxFontDialog dialog(parent, data);
1028     if (!caption.IsEmpty())
1029         dialog.SetTitle(caption);
1030     if ( dialog.ShowModal() == wxID_OK )
1031     {
1032         fontRet = dialog.GetFontData().GetChosenFont();
1033     }
1034     //else: leave it invalid
1035
1036     return fontRet;
1037 }
1038
1039 #endif // wxUSE_FONTDLG
1040
1041 // ----------------------------------------------------------------------------
1042 // wxSafeYield and supporting functions
1043 // ----------------------------------------------------------------------------
1044
1045 void wxEnableTopLevelWindows(bool enable)
1046 {
1047     wxWindowList::compatibility_iterator node;
1048     for ( node = wxTopLevelWindows.GetFirst(); node; node = node->GetNext() )
1049         node->GetData()->Enable(enable);
1050 }
1051
1052 wxWindowDisabler::wxWindowDisabler(wxWindow *winToSkip)
1053 {
1054     // remember the top level windows which were already disabled, so that we
1055     // don't reenable them later
1056     m_winDisabled = NULL;
1057
1058     wxWindowList::compatibility_iterator node;
1059     for ( node = wxTopLevelWindows.GetFirst(); node; node = node->GetNext() )
1060     {
1061         wxWindow *winTop = node->GetData();
1062         if ( winTop == winToSkip )
1063             continue;
1064
1065         // we don't need to disable the hidden or already disabled windows
1066         if ( winTop->IsEnabled() && winTop->IsShown() )
1067         {
1068             winTop->Disable();
1069         }
1070         else
1071         {
1072             if ( !m_winDisabled )
1073             {
1074                 m_winDisabled = new wxWindowList;
1075             }
1076
1077             m_winDisabled->Append(winTop);
1078         }
1079     }
1080 }
1081
1082 wxWindowDisabler::~wxWindowDisabler()
1083 {
1084     wxWindowList::compatibility_iterator node;
1085     for ( node = wxTopLevelWindows.GetFirst(); node; node = node->GetNext() )
1086     {
1087         wxWindow *winTop = node->GetData();
1088         if ( !m_winDisabled || !m_winDisabled->Find(winTop) )
1089         {
1090             winTop->Enable();
1091         }
1092         //else: had been already disabled, don't reenable
1093     }
1094
1095     delete m_winDisabled;
1096 }
1097
1098 // Yield to other apps/messages and disable user input to all windows except
1099 // the given one
1100 bool wxSafeYield(wxWindow *win, bool onlyIfNeeded)
1101 {
1102     wxWindowDisabler wd(win);
1103
1104     bool rc;
1105     if (onlyIfNeeded)
1106         rc = wxYieldIfNeeded();
1107     else
1108         rc = wxYield();
1109
1110     return rc;
1111 }
1112
1113 // Don't synthesize KeyUp events holding down a key and producing KeyDown
1114 // events with autorepeat. On by default and always on in wxMSW. wxGTK version
1115 // in utilsgtk.cpp.
1116 #ifndef __WXGTK__
1117 bool wxSetDetectableAutoRepeat( bool WXUNUSED(flag) )
1118 {
1119     return true;    // detectable auto-repeat is the only mode MSW supports
1120 }
1121 #endif // !wxGTK
1122
1123 #endif // wxUSE_GUI