src/frontends/xforms/FormFiledialog.C

   1 /**
   2  * \file FormFiledialog.C
   3  * This file is part of LyX, the document processor.
   4  * Licence details can be found in the file COPYING.
   5  *
   6  * \author unknown
   7  * \author John Levon
   8  *
   9  * Full author contact details are available in file CREDITS.
  10  */
  11
  12 #include <config.h>
  13
  14 #include "FormFiledialog.h"
  15 #include "forms/form_filedialog.h"
  16
  17 #include "forms_gettext.h"
  18 #include "xforms_helpers.h"
  19
  20 #include "frontends/Dialogs.h"
  21
  22 #include "support/FileInfo.h"
  23 #include "support/lyxlib.h"
  24 #include "support/lstrings.h"
  25 #include "support/tostr.h"
  26 #include "support/filetools.h"
  27
  28 #include "lyx_forms.h"
  29
  30 #include <boost/bind.hpp>
  31 #include <boost/regex.hpp>
  32
  33 #include <algorithm>
  34 #include <map>
  35 #include <grp.h>
  36 #include <pwd.h>
  37
  38 //#ifdef HAVE_ERRNO_H
  39 //#include <cerrno>
  40 //#endif
  41
  42 #if HAVE_DIRENT_H
  43 # include <dirent.h>
  44 #else
  45 # define dirent direct
  46 # if HAVE_SYS_NDIR_H
  47 #  include <sys/ndir.h>
  48 # endif
  49 # if HAVE_SYS_DIR_H
  50 #  include <sys/dir.h>
  51 # endif
  52 # if HAVE_NDIR_H
  53 #  include <ndir.h>
  54 # endif
  55 #endif
  56
  57 using lyx::support::AbsolutePath;
  58 using lyx::support::AddName;
  59 using lyx::support::ExpandPath;
  60 using lyx::support::FileInfo;
  61 using lyx::support::getcwd;
  62 using lyx::support::GetEnvPath;
  63 using lyx::support::LyXReadLink;
  64 using lyx::support::MakeAbsPath;
  65 using lyx::support::OnlyFilename;
  66 using lyx::support::split;
  67 using lyx::support::subst;
  68 using lyx::support::suffixIs;
  69 using lyx::support::trim;
  70
  71 using std::max;
  72 using std::sort;
  73 using std::string;
  74 using std::map;
  75
  76
  77 namespace {
  78
  79 // six months, in seconds
  80 long const SIX_MONTH_SEC = 6L * 30L * 24L * 60L * 60L;
  81 //static
  82 long const ONE_HOUR_SEC = 60L * 60L;
  83
  84 extern "C" {
  85
  86         static
  87         int C_LyXFileDlg_CancelCB(FL_FORM *fl, void *xev)
  88         {
  89                 return FileDialog::Private::CancelCB(fl, xev);
  90         }
  91
  92         static
  93         void C_LyXFileDlg_DoubleClickCB(FL_OBJECT * ob, long data)
  94         {
  95                 FileDialog::Private::DoubleClickCB(ob, data);
  96         }
  97
  98         static
  99         void C_LyXFileDlg_FileDlgCB(FL_OBJECT * ob, long data)
 100         {
 101                 FileDialog::Private::FileDlgCB(ob, data);
 102         }
 103
 104 }
 105
 106 // *** User cache class implementation
 107 /// User cache class definition
 108 class UserCache {
 109 public:
 110         /// seeks user name from group ID
 111         string const & find(uid_t ID) const {
 112                 Users::const_iterator cit = users.find(ID);
 113                 if (cit == users.end()) {
 114                         add(ID);
 115                         return users[ID];
 116                 }
 117                 return cit->second;
 118         }
 119 private:
 120         ///
 121         void add(uid_t ID) const;
 122         ///
 123         typedef map<uid_t, string> Users;
 124         ///
 125         mutable Users users;
 126 };
 127
 128
 129 void UserCache::add(uid_t ID) const
 130 {
 131         struct passwd const * entry = getpwuid(ID);
 132         users[ID] = entry ? entry->pw_name : tostr(int(ID));
 133 }
 134
 135
 136 /// Group cache class definition
 137 class GroupCache {
 138 public:
 139         /// seeks group name from group ID
 140         string const & find(gid_t ID) const ;
 141 private:
 142         ///
 143         void add(gid_t ID) const;
 144         ///
 145         typedef map<gid_t, string> Groups;
 146         ///
 147         mutable Groups groups;
 148 };
 149
 150
 151 string const & GroupCache::find(gid_t ID) const
 152 {
 153         Groups::const_iterator cit = groups.find(ID);
 154         if (cit == groups.end()) {
 155                 add(ID);
 156                 return groups[ID];
 157         }
 158         return cit->second;
 159 }
 160
 161
 162 void GroupCache::add(gid_t ID) const
 163 {
 164         struct group const * entry = getgrgid(ID);
 165         groups[ID] = entry ? entry->gr_name : tostr(int(ID));
 166 }
 167
 168 // local instances
 169 UserCache lyxUserCache;
 170 GroupCache lyxGroupCache;
 171
 172 // compares two LyXDirEntry objects content (used for sort)
 173 class comp_direntry {
 174 public:
 175         bool operator()(DirEntry const & r1, DirEntry const & r2) const
 176         {
 177                 bool const r1d = suffixIs(r1.name_, '/');
 178                 bool const r2d = suffixIs(r2.name_, '/');
 179                 if (r1d && !r2d)
 180                         return true;
 181                 if (!r1d && r2d)
 182                         return false;
 183                 return r1.name_ < r2.name_;
 184         }
 185 };
 186
 187
 188 } // namespace anon
 189
 190
 191
 192 // *** FileDialog::Private class implementation
 193
 194 // static members
 195 FD_filedialog * FileDialog::Private::file_dlg_form_ = 0;
 196 FileDialog::Private * FileDialog::Private::current_dlg_ = 0;
 197 int FileDialog::Private::minw_ = 0;
 198 int FileDialog::Private::minh_ = 0;
 199
 200
 201 namespace {
 202
 203 boost::regex glob2regex(string const & pat)
 204 {
 205         // We massage the pattern a bit so that the usual
 206         // shell pattern we all are used to will work.
 207         // One nice thing about using a real regex is that
 208         // things like "*.*[^~]" will work also.
 209         // build the regex string.
 210         string pattern = subst(pat, ".", "\\.");
 211         pattern = subst(pattern, "*", ".*");
 212
 213         boost::regex reg(pattern);
 214         return reg;
 215 }
 216
 217
 218 bool globMatch(string const & a, boost::regex const & reg)
 219 {
 220         // If the glob is invalid then match everything.
 221         return reg.empty() ? true : boost::regex_match(a, reg);
 222 }
 223
 224 } // namespace anon
 225
 226
 227 // Reread: updates dialog list to match class directory
 228 void FileDialog::Private::Reread()
 229 {
 230         // Opens directory
 231         DIR * dir = ::opendir(directory_.c_str());
 232         if (!dir) {
 233 // FIXME: re-add ...
 234 #if 0
 235                 Alert::err_alert(_("Warning! Couldn't open directory."),
 236                         directory_);
 237 #endif
 238                 directory_ = getcwd();
 239                 dir = ::opendir(directory_.c_str());
 240         }
 241
 242         // Clear the present namelist
 243         dir_entries_.clear();
 244
 245         // Updates display
 246         fl_hide_object(file_dlg_form_->List);
 247         fl_clear_browser(file_dlg_form_->List);
 248         fl_set_input(file_dlg_form_->DirBox, directory_.c_str());
 249
 250         // Splits complete directory name into directories and compute depth
 251         depth_ = 0;
 252         string line, Temp;
 253         string mode;
 254         string File = directory_;
 255         if (File != "/")
 256                 File = split(File, Temp, '/');
 257
 258         while (!File.empty() || !Temp.empty()) {
 259                 string dline = "@b" + line + Temp + '/';
 260                 fl_add_browser_line(file_dlg_form_->List, dline.c_str());
 261                 File = split(File, Temp, '/');
 262                 line += ' ';
 263                 ++depth_;
 264         }
 265
 266         // Parses all entries of the given subdirectory
 267         boost::regex const mask_regex = glob2regex(mask_);
 268
 269         time_t curTime = time(0);
 270         rewinddir(dir);
 271         while (dirent * entry = readdir(dir)) {
 272                 bool isLink = false, isDir = false;
 273
 274                 // If the pattern doesn't start with a dot, skip hidden files
 275                 if (!mask_.empty() && mask_[0] != '.' &&
 276                     entry->d_name[0] == '.')
 277                         continue;
 278
 279                 // Gets filename
 280                 string fname = entry->d_name;
 281
 282                 // Under all circumstances, "." and ".." are not wanted
 283                 if (fname == "." || fname == "..")
 284                         continue;
 285
 286                 // gets file status
 287                 File = AddName(directory_, fname);
 288
 289                 FileInfo fileInfo(File, true);
 290
 291                 // can this really happen?
 292                 if (!fileInfo.isOK())
 293                         continue;
 294
 295                 mode = fileInfo.modeString();
 296                 unsigned int const nlink = fileInfo.getNumberOfLinks();
 297                 string const user  = lyxUserCache.find(fileInfo.getUid());
 298                 string const group = lyxGroupCache.find(fileInfo.getGid());
 299
 300                 time_t modtime = fileInfo.getModificationTime();
 301                 string Time = ctime(&modtime);
 302
 303                 if (curTime > modtime + SIX_MONTH_SEC
 304                     || curTime < modtime + ONE_HOUR_SEC) {
 305                         // The file is fairly old or in the future. POSIX says
 306                         // the cutoff is 6 months old. Allow a 1 hour slop
 307                         // factor for what is considered "the future", to
 308                         // allow for NFS server/client clock disagreement.
 309                         // Show the year instead of the time of day.
 310                         Time.erase(10, 9);
 311                         Time.erase(15, string::npos);
 312                 } else {
 313                         Time.erase(16, string::npos);
 314                 }
 315
 316                 string buffer = mode + ' ' +
 317                         tostr(nlink) + ' ' +
 318                         user + ' ' +
 319                         group + ' ' +
 320                         Time.substr(4, string::npos) + ' ';
 321
 322                 buffer += entry->d_name;
 323                 buffer += fileInfo.typeIndicator();
 324
 325                 isLink = fileInfo.isLink();
 326                 if (isLink) {
 327                         string Link;
 328
 329                         if (LyXReadLink(File, Link)) {
 330                                 buffer += " -> ";
 331                                 buffer += Link;
 332
 333                                 // This gives the FileType of the file that
 334                                 // is really pointed too after resolving all
 335                                 // symlinks. This is not necessarily the same
 336                                 // as the type of Link (which could again be a
 337                                 // link). Is that intended?
 338                                 //                              JV 199902
 339                                 fileInfo.newFile(File);
 340                                 if (fileInfo.isOK())
 341                                         buffer += fileInfo.typeIndicator();
 342                                 else
 343                                         continue;
 344                         }
 345                 }
 346
 347                 // filters files according to pattern and type
 348                 if (fileInfo.isRegular()
 349                     || fileInfo.isChar()
 350                     || fileInfo.isBlock()
 351                     || fileInfo.isFifo()) {
 352                         if (!globMatch(fname, mask_regex))
 353                                 continue;
 354                 } else if (!(isDir = fileInfo.isDir()))
 355                         continue;
 356
 357                 DirEntry tmp;
 358
 359                 // Note ls_entry_ is an string!
 360                 tmp.ls_entry_ = buffer;
 361                 // creates used name
 362                 string temp = fname;
 363                 if (isDir)
 364                         temp += '/';
 365
 366                 tmp.name_ = temp;
 367                 // creates displayed name
 368                 temp = entry->d_name;
 369                 if (isLink)
 370                         temp += '@';
 371                 else
 372                         temp += fileInfo.typeIndicator();
 373                 tmp.displayed_ = temp;
 374
 375                 dir_entries_.push_back(tmp);
 376         }
 377
 378         closedir(dir);
 379
 380         // Sort the names
 381         sort(dir_entries_.begin(), dir_entries_.end(), comp_direntry());
 382
 383         // Add them to directory box
 384         for (DirEntries::const_iterator cit = dir_entries_.begin();
 385              cit != dir_entries_.end(); ++cit) {
 386                 string const temp = line + cit->displayed_;
 387                 fl_add_browser_line(file_dlg_form_->List, temp.c_str());
 388         }
 389         fl_set_browser_topline(file_dlg_form_->List, depth_);
 390         fl_show_object(file_dlg_form_->List);
 391         last_sel_ = -1;
 392 }
 393
 394
 395 // SetDirectory: sets dialog current directory
 396 void FileDialog::Private::SetDirectory(string const & path)
 397 {
 398         string tmp;
 399         if (path.empty())
 400                 tmp = getcwd();
 401         else
 402                 tmp = MakeAbsPath(ExpandPath(path), directory_);
 403
 404         // must check the directory exists
 405         DIR * dir = ::opendir(tmp.c_str());
 406         if (!dir) {
 407 // FIXME: re-add ...
 408 #if 0
 409                 Alert::err_alert(_("Warning! Couldn't open directory."), tmp);
 410 #endif
 411         } else {
 412                 ::closedir(dir);
 413                 directory_ = tmp;
 414         }
 415 }
 416
 417
 418 // SetMask: sets dialog file mask
 419 void FileDialog::Private::SetMask(string const & newmask)
 420 {
 421         mask_ = trim(newmask);
 422         if (mask_.empty())
 423                 mask_ = "*";
 424
 425         fl_set_input(file_dlg_form_->PatBox, mask_.c_str());
 426 }
 427
 428
 429 // SetInfoLine: sets dialog information line
 430 void FileDialog::Private::SetInfoLine(string const & line)
 431 {
 432         info_line_ = line;
 433         fl_set_object_label(file_dlg_form_->FileInfo, info_line_.c_str());
 434 }
 435
 436
 437 FileDialog::Private::Private()
 438 {
 439         directory_ = MakeAbsPath(string("."));
 440         mask_ = "*";
 441
 442         // Creates form if necessary.
 443         if (!file_dlg_form_) {
 444                 file_dlg_form_ = build_filedialog(this);
 445                 minw_ = file_dlg_form_->form->w;
 446                 minh_ = file_dlg_form_->form->h;
 447                 // Set callbacks. This means that we don't need a patch file
 448                 fl_set_object_callback(file_dlg_form_->DirBox,
 449                                        C_LyXFileDlg_FileDlgCB, 0);
 450                 fl_set_object_callback(file_dlg_form_->PatBox,
 451                                        C_LyXFileDlg_FileDlgCB, 1);
 452                 fl_set_object_callback(file_dlg_form_->List,
 453                                        C_LyXFileDlg_FileDlgCB, 2);
 454                 fl_set_object_callback(file_dlg_form_->Filename,
 455                                        C_LyXFileDlg_FileDlgCB, 3);
 456                 fl_set_object_callback(file_dlg_form_->Rescan,
 457                                        C_LyXFileDlg_FileDlgCB, 10);
 458                 fl_set_object_callback(file_dlg_form_->Home,
 459                                        C_LyXFileDlg_FileDlgCB, 11);
 460                 fl_set_object_callback(file_dlg_form_->User1,
 461                                        C_LyXFileDlg_FileDlgCB, 12);
 462                 fl_set_object_callback(file_dlg_form_->User2,
 463                                        C_LyXFileDlg_FileDlgCB, 13);
 464
 465                 // Make sure pressing the close box doesn't crash LyX. (RvdK)
 466                 fl_set_form_atclose(file_dlg_form_->form,
 467                                     C_LyXFileDlg_CancelCB, 0);
 468                 // Register doubleclick callback
 469                 fl_set_browser_dblclick_callback(file_dlg_form_->List,
 470                                                  C_LyXFileDlg_DoubleClickCB,
 471                                                  0);
 472         }
 473         fl_hide_object(file_dlg_form_->User1);
 474         fl_hide_object(file_dlg_form_->User2);
 475
 476         r_ = Dialogs::redrawGUI().connect(boost::bind(&FileDialog::Private::redraw, this));
 477 }
 478
 479
 480 FileDialog::Private::~Private()
 481 {
 482         r_.disconnect();
 483 }
 484
 485
 486 void FileDialog::Private::redraw()
 487 {
 488         if (file_dlg_form_->form && file_dlg_form_->form->visible)
 489                 fl_redraw_form(file_dlg_form_->form);
 490 }
 491
 492
 493 // SetButton: sets file selector user button action
 494 void FileDialog::Private::SetButton(int index, string const & name,
 495                            string const & path)
 496 {
 497         FL_OBJECT * ob;
 498         string * tmp;
 499
 500         if (index == 0) {
 501                 ob = file_dlg_form_->User1;
 502                 tmp = &user_path1_;
 503         } else if (index == 1) {
 504                 ob = file_dlg_form_->User2;
 505                 tmp = &user_path2_;
 506         } else {
 507                 return;
 508         }
 509
 510         if (!name.empty()) {
 511                 fl_set_object_label(ob, idex(name).c_str());
 512                 fl_set_button_shortcut(ob, scex(name).c_str(), 1);
 513                 fl_show_object(ob);
 514                 *tmp = path;
 515         } else {
 516                 fl_hide_object(ob);
 517                 tmp->erase();
 518         }
 519 }
 520
 521
 522 // GetDirectory: gets last dialog directory
 523 string const FileDialog::Private::GetDirectory() const
 524 {
 525         if (!directory_.empty())
 526                 return directory_;
 527         else
 528                 return string(".");
 529 }
 530
 531 namespace {
 532         bool x_sync_kludge(bool ret)
 533         {
 534                 XSync(fl_get_display(), false);
 535                 return ret;
 536         }
 537 } // namespace anon
 538
 539 // RunDialog: handle dialog during file selection
 540 bool FileDialog::Private::RunDialog()
 541 {
 542         force_cancel_ = false;
 543         force_ok_ = false;
 544
 545         // event loop
 546         while (true) {
 547                 FL_OBJECT * ob = fl_do_forms();
 548
 549                 if (ob == file_dlg_form_->Ready) {
 550                         if (HandleOK())
 551                                 return x_sync_kludge(true);
 552
 553                 } else if (ob == file_dlg_form_->Cancel || force_cancel_)
 554                         return x_sync_kludge(false);
 555
 556                 else if (force_ok_)
 557                         return x_sync_kludge(true);
 558         }
 559 }
 560
 561
 562 // XForms objects callback (static)
 563 void FileDialog::Private::FileDlgCB(FL_OBJECT *, long arg)
 564 {
 565         if (!current_dlg_)
 566                 return;
 567
 568         switch (arg) {
 569
 570         case 0: // get directory
 571                 current_dlg_->SetDirectory(fl_get_input(file_dlg_form_->DirBox));
 572                 current_dlg_->Reread();
 573                 break;
 574
 575         case 1: // get mask
 576                 current_dlg_->SetMask(fl_get_input(file_dlg_form_->PatBox));
 577                 current_dlg_->Reread();
 578                 break;
 579
 580         case 2: // list
 581                 current_dlg_->HandleListHit();
 582                 break;
 583
 584         case 10: // rescan
 585                 current_dlg_->SetDirectory(fl_get_input(file_dlg_form_->DirBox));
 586                 current_dlg_->SetMask(fl_get_input(file_dlg_form_->PatBox));
 587                 current_dlg_->Reread();
 588                 break;
 589
 590         case 11: // home
 591                 current_dlg_->SetDirectory(GetEnvPath("HOME"));
 592                 current_dlg_->SetMask(fl_get_input(file_dlg_form_->PatBox));
 593                 current_dlg_->Reread();
 594                 break;
 595
 596         case 12: // user button 1
 597                 current_dlg_->SetDirectory(current_dlg_->user_path1_);
 598                 current_dlg_->SetMask(fl_get_input(file_dlg_form_->PatBox));
 599                 current_dlg_->Reread();
 600                 break;
 601
 602         case 13: // user button 2
 603                 current_dlg_->SetDirectory(current_dlg_->user_path2_);
 604                 current_dlg_->SetMask(fl_get_input(file_dlg_form_->PatBox));
 605                 current_dlg_->Reread();
 606                 break;
 607
 608         }
 609 }
 610
 611
 612 // Handle callback from list
 613 void FileDialog::Private::HandleListHit()
 614 {
 615         // set info line
 616         int const select_ = fl_get_browser(file_dlg_form_->List);
 617         if (select_ > depth_)
 618                 SetInfoLine(dir_entries_[select_ - depth_ - 1].ls_entry_);
 619         else
 620                 SetInfoLine(string());
 621 }
 622
 623
 624 // Callback for double click in list
 625 void FileDialog::Private::DoubleClickCB(FL_OBJECT *, long)
 626 {
 627         // Simulate click on OK button
 628         if (current_dlg_->HandleDoubleClick())
 629                 current_dlg_->Force(false);
 630 }
 631
 632
 633 // Handle double click from list
 634 bool FileDialog::Private::HandleDoubleClick()
 635 {
 636         string tmp;
 637
 638         // set info line
 639         bool isDir = true;
 640         int const select_ = fl_get_browser(file_dlg_form_->List);
 641         if (select_ > depth_) {
 642                 tmp = dir_entries_[select_ - depth_ - 1].name_;
 643                 SetInfoLine(dir_entries_[select_ - depth_ - 1].ls_entry_);
 644                 if (!suffixIs(tmp, '/')) {
 645                         isDir = false;
 646                         fl_set_input(file_dlg_form_->Filename, tmp.c_str());
 647                 }
 648         } else if (select_ != 0) {
 649                 SetInfoLine(string());
 650         } else
 651                 return true;
 652
 653         // executes action
 654         if (isDir) {
 655                 string Temp;
 656
 657                 // builds new directory name
 658                 if (select_ > depth_) {
 659                         // Directory deeper down
 660                         // First, get directory with trailing /
 661                         Temp = fl_get_input(file_dlg_form_->DirBox);
 662                         if (!suffixIs(Temp, '/'))
 663                                 Temp += '/';
 664                         Temp += tmp;
 665                 } else {
 666                         // Directory higher up
 667                         Temp.erase();
 668                         for (int i = 0; i < select_; ++i) {
 669                                 string piece = fl_get_browser_line(file_dlg_form_->List, i+1);
 670                                 // The '+2' is here to count the '@b' (JMarc)
 671                                 Temp += piece.substr(i + 2);
 672                         }
 673                 }
 674
 675                 // assigns it
 676                 SetDirectory(Temp);
 677                 Reread();
 678                 return false;
 679         }
 680         return true;
 681 }
 682
 683
 684 // Handle OK button call
 685 bool FileDialog::Private::HandleOK()
 686 {
 687         // mask was changed
 688         string tmp = fl_get_input(file_dlg_form_->PatBox);
 689         if (tmp != mask_) {
 690                 SetMask(tmp);
 691                 Reread();
 692                 return false;
 693         }
 694
 695         // directory was changed
 696         tmp = fl_get_input(file_dlg_form_->DirBox);
 697         if (tmp != directory_) {
 698                 SetDirectory(tmp);
 699                 Reread();
 700                 return false;
 701         }
 702
 703         // Handle return from list
 704         int const select = fl_get_browser(file_dlg_form_->List);
 705         if (select > depth_) {
 706                 string const temp = dir_entries_[select - depth_ - 1].name_;
 707                 if (!suffixIs(temp, '/')) {
 708                         // If user didn't type anything, use browser
 709                         string const name = fl_get_input(file_dlg_form_->Filename);
 710                         if (name.empty())
 711                                 fl_set_input(file_dlg_form_->Filename, temp.c_str());
 712                         return true;
 713                 }
 714         }
 715
 716         // Emulate a doubleclick
 717         return HandleDoubleClick();
 718 }
 719
 720
 721 // Handle Cancel CB from WM close
 722 int FileDialog::Private::CancelCB(FL_FORM *, void *)
 723 {
 724         // Simulate a click on the cancel button
 725         current_dlg_->Force(true);
 726         return FL_IGNORE;
 727 }
 728
 729
 730 // Simulates a click on OK/Cancel
 731 void FileDialog::Private::Force(bool cancel)
 732 {
 733         if (cancel) {
 734                 force_cancel_ = true;
 735                 fl_set_button(file_dlg_form_->Cancel, 1);
 736         } else {
 737                 force_ok_ = true;
 738                 fl_set_button(file_dlg_form_->Ready, 1);
 739         }
 740         // Start timer to break fl_do_forms loop soon
 741         fl_set_timer(file_dlg_form_->timer, 0.1);
 742 }
 743
 744
 745 // Select: launches dialog and returns selected file
 746 string const FileDialog::Private::Select(string const & title,
 747                                          string const & path,
 748                                          string const & mask,
 749                                          string const & suggested)
 750 {
 751         // handles new mask and path
 752         bool isOk = true;
 753         if (!mask.empty()) {
 754                 SetMask(mask);
 755                 isOk = false;
 756         }
 757         if (!path.empty()) {
 758                 SetDirectory(path);
 759                 isOk = false;
 760         }
 761         if (!isOk)
 762                 Reread();
 763
 764         // highlight the suggested file in the browser, if it exists.
 765         int sel = 0;
 766         string const filename = OnlyFilename(suggested);
 767         if (!filename.empty()) {
 768                 for (int i = 0; i < fl_get_browser_maxline(file_dlg_form_->List); ++i) {
 769                         string s = fl_get_browser_line(file_dlg_form_->List, i + 1);
 770                         s = trim(s);
 771                         if (s == filename) {
 772                                 sel = i + 1;
 773                                 break;
 774                         }
 775                 }
 776         }
 777
 778         if (sel != 0)
 779                 fl_select_browser_line(file_dlg_form_->List, sel);
 780         int const top = max(sel - 5, 1);
 781         fl_set_browser_topline(file_dlg_form_->List, top);
 782
 783         // checks whether dialog can be started
 784         if (current_dlg_)
 785                 return string();
 786         current_dlg_ = this;
 787
 788         // runs dialog
 789         SetInfoLine(string());
 790         setEnabled(file_dlg_form_->Filename, true);
 791         fl_set_input(file_dlg_form_->Filename, suggested.c_str());
 792         fl_set_button(file_dlg_form_->Cancel, 0);
 793         fl_set_button(file_dlg_form_->Ready, 0);
 794         fl_set_focus_object(file_dlg_form_->form, file_dlg_form_->Filename);
 795         fl_deactivate_all_forms();
 796         // Prevent xforms crashing if the dialog gets too small by preventing
 797         // it from being shrunk beyond a minimum size.
 798         // calls to fl_set_form_minsize/maxsize apply only to the next
 799         // fl_show_form(), so this comes first.
 800         fl_set_form_minsize(file_dlg_form_->form, minw_, minh_);
 801
 802         fl_show_form(file_dlg_form_->form,
 803                      FL_PLACE_MOUSE | FL_FREE_SIZE, 0,
 804                      title.c_str());
 805
 806         isOk = RunDialog();
 807
 808         fl_hide_form(file_dlg_form_->form);
 809         fl_activate_all_forms();
 810         current_dlg_ = 0;
 811
 812         // Returns filename or string() if no valid selection was made
 813         if (!isOk || !fl_get_input(file_dlg_form_->Filename)[0])
 814                 return string();
 815
 816         file_name_ = fl_get_input(file_dlg_form_->Filename);
 817
 818         if (!AbsolutePath(file_name_))
 819                 file_name_ = AddName(fl_get_input(file_dlg_form_->DirBox), file_name_);
 820         return file_name_;
 821 }
 822
 823
 824 // SelectDir: launches dialog and returns selected directory
 825 string const FileDialog::Private::SelectDir(string const & title,
 826                                          string const & path,
 827                                          string const & suggested)
 828 {
 829         SetMask("*/");
 830         // handles new path
 831         bool isOk = true;
 832         if (!path.empty()) {
 833                 // handle case where path does not end with "/"
 834                 // remerge path+suggested and check if it is a valid path
 835                 if (!suggested.empty()) {
 836                         string tmp = suggested;
 837                         if (!suffixIs(tmp, '/'))
 838                                 tmp += '/';
 839                         string full_path = path;
 840                         full_path += tmp;
 841                         // check if this is really a directory
 842                         DIR * dir = ::opendir(full_path.c_str());
 843                         if (dir)
 844                                 SetDirectory(full_path);
 845                         else
 846                                 SetDirectory(path);
 847                 } else
 848                         SetDirectory(path);
 849                 isOk = false;
 850         }
 851         if (!isOk)
 852                 Reread();
 853
 854         // checks whether dialog can be started
 855         if (current_dlg_)
 856                 return string();
 857         current_dlg_ = this;
 858
 859         // runs dialog
 860         SetInfoLine(string());
 861         fl_set_input(file_dlg_form_->Filename, "");
 862         setEnabled(file_dlg_form_->Filename, false);
 863         fl_set_button(file_dlg_form_->Cancel, 0);
 864         fl_set_button(file_dlg_form_->Ready, 0);
 865         fl_set_focus_object(file_dlg_form_->form, file_dlg_form_->DirBox);
 866         fl_deactivate_all_forms();
 867         fl_show_form(file_dlg_form_->form,
 868                      FL_PLACE_MOUSE | FL_FREE_SIZE, 0,
 869                      title.c_str());
 870
 871         isOk = RunDialog();
 872
 873         fl_hide_form(file_dlg_form_->form);
 874         fl_activate_all_forms();
 875         current_dlg_ = 0;
 876
 877         // Returns directory or string() if no valid selection was made
 878         if (!isOk)
 879                 return string();
 880
 881         file_name_ = fl_get_input(file_dlg_form_->DirBox);
 882         return file_name_;
 883 }