src/frontends/xforms/Menubar_pimpl.C

   1 /* This file is part of
   2 * ======================================================
   3 *
   4 *           LyX, The Document Processor
   5 *
   6 *           Copyright (C) 1999 The LyX Team.
   7 *
   8 *======================================================*/
   9
  10 #ifdef __GNUG__
  11 #pragma implementation
  12 #endif
  13
  14 #include <config.h>
  15
  16 #include <algorithm>
  17 #include "support/lstrings.h"
  18 #include "support/LAssert.h"
  19 #include "debug.h"
  20 #include "LyXAction.h"
  21 #include "lyxfunc.h"
  22 #include "kbmap.h"
  23 #include "buffer.h"
  24 #include "LyXView.h"
  25 #include "MenuBackend.h"
  26 #include "Menubar_pimpl.h"
  27
  28 using std::endl;
  29 using std::vector;
  30 using std::max;
  31 using std::min;
  32
  33 typedef vector<int>::size_type size_type;
  34
  35 extern kb_keymap * toplevel_keymap;
  36 extern LyXAction lyxaction;
  37
  38 // Some constants
  39 static const int MENU_LABEL_SIZE = FL_NORMAL_SIZE;
  40 static const int mheight = 30;
  41 static const int mbheight= 22;
  42 // where to place the menubar?
  43 static const int yloc = (mheight - mbheight)/2; //air + bw;
  44 static const int mbadd = 20; // menu button add (to width)
  45 // Some space between buttons on the menubar
  46 static const int air = 2;
  47 static char const * menu_tabstop = "aa";
  48 static char const * default_tabstop = "aaaaaaaa";
  49 // We do not want to mix position values in a menu (like the index of
  50 // a submenu) with the action numbers which convey actual information.
  51 // Therefore we offset all the action values by an arbitrary large
  52 // constant.
  53 static const int action_offset = 1000;
  54
  55
  56 //Defined later, used in makeMenubar().
  57 extern "C"
  58 void C_Menubar_Pimpl_MenuCallback(FL_OBJECT * ob, long button);
  59
  60 // This is used a few times below.
  61 inline
  62 int string_width(string const & str)
  63 {
  64         return fl_get_string_widthTAB(FL_NORMAL_STYLE, MENU_LABEL_SIZE,
  65                                       str.c_str(),
  66                                       static_cast<int>(str.length()));
  67 }
  68
  69
  70 Menubar::Pimpl::Pimpl(LyXView * view, MenuBackend const & mb)
  71         : owner_(view), menubackend_(&mb), current_group_(0)
  72 {
  73         for (MenuBackend::const_iterator menu = menubackend_->begin();
  74             menu != menubackend_->end() ; ++menu) {
  75                 if (menu->menubar()) {
  76                         FL_OBJECT * group = fl_bgn_group();
  77                         makeMenubar(*menu);
  78                         fl_end_group();
  79                         fl_hide_object(group);
  80                         lyxerr[Debug::GUI]
  81                                 << "Menubar::Pimpl::Pimpl: "
  82                                 << "creating and hiding group " << group
  83                                 << " for menubar " << menu->name() << endl;
  84                         menubarmap_[menu->name()] = group;
  85                 }
  86         }
  87 }
  88
  89
  90 Menubar::Pimpl::~Pimpl()
  91 {
  92         // Should we do something here?
  93 }
  94
  95
  96 void Menubar::Pimpl::makeMenubar(Menu const &menu)
  97 {
  98         FL_FORM * form = owner_->getForm();
  99         int moffset = 0;
 100
 101         // Create menu frame if there is non yet.
 102         FL_OBJECT * frame = fl_add_frame(FL_UP_FRAME, 0, 0,
 103                                          form->w, mheight, "");
 104         fl_set_object_resize(frame, FL_RESIZE_ALL);
 105         fl_set_object_gravity(frame, NorthWestGravity,
 106                               NorthEastGravity);
 107
 108         for (Menu::const_iterator i = menu.begin();
 109              i != menu.end(); ++i) {
 110                 FL_OBJECT * obj;
 111                 if (i->kind() != MenuItem::Submenu) {
 112                         lyxerr << "ERROR: Menubar::Pimpl::createMenubar:"
 113                                 " only submenus can appear in a menubar";
 114                         break;
 115                 }
 116                 string label = i->label();
 117                 string shortcut = "#" + i->shortcut();
 118                 int width = string_width(label);
 119                 obj = fl_add_button(FL_MENU_BUTTON,
 120                                     air + moffset, yloc,
 121                                     width + mbadd,
 122                                     mbheight,
 123                                     label.c_str());
 124                 fl_set_object_boxtype(obj, FL_FLAT_BOX);
 125                 fl_set_object_color(obj, FL_MCOL, FL_MCOL);
 126                 fl_set_object_lsize(obj, MENU_LABEL_SIZE);
 127                 fl_set_object_lstyle(obj, FL_NORMAL_STYLE);
 128                 fl_set_object_resize(obj, FL_RESIZE_ALL);
 129                 fl_set_object_gravity(obj, NorthWestGravity,
 130                                       NorthWestGravity);
 131                 moffset += obj->w + air;
 132                 fl_set_object_shortcut(obj, shortcut.c_str(), 1);
 133                 fl_set_object_callback(obj, C_Menubar_Pimpl_MenuCallback, 1);
 134
 135                 ItemInfo * iteminfo = new ItemInfo(this,
 136                                                    new MenuItem(*i), obj);
 137                 buttonlist_.push_back(iteminfo);
 138                 obj->u_vdata = iteminfo;
 139         }
 140
 141 }
 142
 143 void Menubar::Pimpl::set(string const & menu_name)
 144 {
 145         lyxerr[Debug::GUI] << "Entering Menubar::Pimpl::set "
 146                            << "for menu `" << menu_name << "'" << endl;
 147
 148         if (menu_name != current_menu_name_) {
 149                 MenubarMap::iterator mbit = menubarmap_.find(menu_name);
 150
 151                 if (mbit == menubarmap_.end()) {
 152                         lyxerr << "ERROR:set: Unknown menu `" << menu_name
 153                                << "'" << endl;
 154                         return;
 155                 }
 156
 157                 if (current_group_) {
 158                         lyxerr[Debug::GUI] << "  hiding group "
 159                                            << current_group_ << endl;
 160                         fl_hide_object(current_group_);
 161                 }
 162
 163                 lyxerr[Debug::GUI] << "  showing group "
 164                                    << mbit->second << endl;
 165                 fl_show_object(mbit->second);
 166                 current_menu_name_ = menu_name;
 167                 current_group_ = mbit->second;
 168                 lyxerr[Debug::GUI] << "Menubar::Pimpl::set: Menubar set."
 169                                    << endl;
 170         }
 171         else
 172                 lyxerr [Debug::GUI] << "Menubar::Pimpl::set: Nothing to do."
 173                                     << endl;
 174 }
 175
 176 void Menubar::Pimpl::openByName(string const & name)
 177 {
 178         if (menubackend_->getMenu(current_menu_name_).hasSubmenu(name)) {
 179                 for (ButtonList::const_iterator cit = buttonlist_.begin();
 180                      cit != buttonlist_.end(); ++cit) {
 181                         if ((*cit)->item_->submenu() == name) {
 182                                 MenuCallback((*cit)->obj_, 1);
 183                                 return;
 184                         }
 185                 }
 186         }
 187         lyxerr << "Menubar::Pimpl::openByName: menu "
 188                << name << " not found" << endl;
 189 }
 190
 191
 192 string limit_string_length(string const & str)
 193 {
 194         string::size_type const max_item_length = 45;
 195
 196         if (str.size() > max_item_length)
 197                 return str.substr(0, max_item_length - 3) + "...";
 198         else
 199                 return str;
 200 }
 201
 202
 203 int get_new_submenu(vector<int> & smn, Window win)
 204 {
 205         static size_type max_number_of_menus = 32;
 206         if (smn.size() >= max_number_of_menus)
 207                 max_number_of_menus =
 208                     fl_setpup_maxpup(static_cast<int>(2*smn.size()));
 209         int menu = fl_newpup(win);
 210         smn.push_back(menu);
 211         return menu;
 212 }
 213
 214 size_type const max_number_of_items = 25;
 215
 216 inline
 217 string const fixlabel(string const & str)
 218 {
 219 #if FL_REVISION < 89
 220         return subst(str, '%', '?');
 221 #else
 222         return subst(str, "%", "%%");
 223 #endif
 224 }
 225
 226 void add_toc2(int menu, string const & extra_label,
 227               vector<int> & smn, Window win,
 228               vector<Buffer::TocItem> const & toc_list,
 229               size_type from, size_type to, int depth)
 230 {
 231         if (to - from <= max_number_of_items) {
 232                 for (size_type i = from; i < to; ++i) {
 233                         int action = lyxaction.
 234                                 getPseudoAction(LFUN_GOTO_PARAGRAPH,
 235                                                 tostr(toc_list[i].par->id()));
 236                         string label(4 * max(0, toc_list[i].depth - depth),' ');
 237                         label += fixlabel(toc_list[i].str);
 238                         label = limit_string_length(label);
 239                         label += "%x" + tostr(action + action_offset);
 240                         if (i == to - 1 && depth == 0)
 241                                 label += extra_label;
 242                         fl_addtopup(menu, label.c_str());
 243                 }
 244         } else {
 245                 size_type pos = from;
 246                 size_type count = 0;
 247                 while (pos < to) {
 248                         ++count;
 249                         if (count > max_number_of_items) {
 250                                 int menu2 = get_new_submenu(smn, win);
 251                                 add_toc2(menu2, extra_label, smn, win,
 252                                          toc_list, pos, to, depth);
 253                                 string label = _("More");
 254                                 label += "...%m";
 255                                 if (depth == 0)
 256                                         label += extra_label;
 257                                 fl_addtopup(menu, label.c_str(), menu2);
 258                                 break;
 259                         }
 260                         size_type new_pos = pos+1;
 261                         while (new_pos < to &&
 262                                toc_list[new_pos].depth > depth)
 263                                 ++new_pos;
 264
 265                         int action = lyxaction.
 266                                 getPseudoAction(LFUN_GOTO_PARAGRAPH,
 267                                                 tostr(toc_list[pos].par->id()));
 268                         string label(4 * max(0, toc_list[pos].depth - depth), ' ');
 269                         label += fixlabel(toc_list[pos].str);
 270                         label = limit_string_length(label);
 271                         if (new_pos == to && depth == 0)
 272                                 label += extra_label;
 273
 274                         if (new_pos == pos + 1) {
 275                                 label += "%x" + tostr(action + action_offset);
 276                                 fl_addtopup(menu, label.c_str());
 277                         } else {
 278                                 int menu2 = get_new_submenu(smn, win);
 279                                 add_toc2(menu2, extra_label, smn, win,
 280                                          toc_list, pos, new_pos, depth+1);
 281                                 label += "%m";
 282                                 fl_addtopup(menu, label.c_str(), menu2);
 283                         }
 284                         pos = new_pos;
 285                 }
 286         }
 287 }
 288
 289 void Menubar::Pimpl::add_toc(int menu, string const & extra_label,
 290                              vector<int> & smn, Window win)
 291 {
 292         //xgettext:no-c-format
 293         static char const * MenuNames[3] = { N_("List of Figures%m"),
 294         //xgettext:no-c-format
 295                                              N_("List of Tables%m"),
 296         //xgettext:no-c-format
 297                                              N_("List of Algorithms%m") };
 298
 299         vector<vector<Buffer::TocItem> > toc_list =
 300                 owner_->buffer()->getTocList();
 301
 302         // Handle LOF/LOT/LOA
 303         int max_nonempty = 0;
 304         for (int i = 1; i <= 3; ++i)
 305                 if (!toc_list[i].empty())
 306                         max_nonempty = i;
 307
 308         for (int j = 1; j <= 3; ++j)
 309                 if (!toc_list[j].empty()) {
 310                         int menu2 = get_new_submenu(smn, win);
 311                         for (size_type i = 0; i < toc_list[j].size(); ++i) {
 312                                 if (i > max_number_of_items) {
 313                                         fl_addtopup(menu2, ". . .%d");
 314                                         break;
 315                                 }
 316                                 int action = lyxaction.
 317                                         getPseudoAction(LFUN_GOTO_PARAGRAPH,
 318                                                         tostr(toc_list[j][i].par->id()));
 319                                 string label = fixlabel(toc_list[j][i].str);
 320                                 label = limit_string_length(label);
 321                                 label += "%x" + tostr(action + action_offset);
 322                                 fl_addtopup(menu2, label.c_str());
 323                         }
 324                         if (j == max_nonempty) {
 325                                 string label = _(MenuNames[j - 1]);
 326                                 label += "%l";
 327                                 fl_addtopup(menu, label.c_str(), menu2);
 328                         } else
 329                                 fl_addtopup(menu, _(MenuNames[j - 1]), menu2);
 330                 }
 331
 332         // Handle normal TOC
 333         if (max_nonempty == 0 && toc_list[0].empty()) {
 334                 fl_addtopup(menu,_("No Table of Contents%i"));
 335                 return;
 336         }
 337
 338         add_toc2(menu, extra_label, smn, win,
 339                  toc_list[0], 0, toc_list[0].size(), 0);
 340
 341 }
 342
 343 void add_references2(int menu, vector<int> & smn, Window win,
 344                      vector<string> const & label_list, string const & type)
 345 {
 346         size_type const max_number_of_items = 25;
 347         size_type const max_number_of_items2 = 20;
 348         string::size_type const max_item_length = 40;
 349         string::size_type const max_item_length2 = 20;
 350
 351         if (label_list.size() <= max_number_of_items)
 352                 for (size_type i = 0; i < label_list.size(); ++i) {
 353                         int action = (type == "goto")
 354                                 ? lyxaction.getPseudoAction(LFUN_REF_GOTO,
 355                                                             label_list[i])
 356                                 : lyxaction.getPseudoAction(LFUN_REF_INSERT,
 357                                                             type + "|++||++|"
 358                                                             + label_list[i]);
 359                         string label = label_list[i];
 360                         if (label.size() > max_item_length)
 361                                 label = label.substr(0, max_item_length-1) + "$";
 362                         label += "%x" + tostr(action + action_offset);
 363                         fl_addtopup(menu, label.c_str());
 364                 }
 365         else {
 366                 size_type count = 0;
 367                 for (size_type i = 0; i < label_list.size();
 368                      i += max_number_of_items2) {
 369                         ++count;
 370                         if (count > max_number_of_items) {
 371                                 fl_addtopup(menu, ". . .%d");
 372                                 break;
 373                         }
 374                         size_type j = min(label_list.size(),
 375                                           i+max_number_of_items2);
 376
 377                         string label;
 378                         label += (label_list[i].size() > max_item_length2)
 379                                 ? label_list[i].substr(0, max_item_length2-1) + "$"
 380                                 : label_list[i];
 381                         label += "..";
 382                         label += (label_list[j-1].size() > max_item_length2)
 383                                 ? label_list[j-1].substr(0, max_item_length2-1) + "$"
 384                                 : label += label_list[j-1];
 385
 386                         int menu2 = get_new_submenu(smn, win);
 387                         for (size_type k = i;  k < j; ++k) {
 388                                 int action = (type == "goto")
 389                                         ? lyxaction.getPseudoAction(LFUN_REF_GOTO,
 390                                                                     label_list[k])
 391                                         : lyxaction.getPseudoAction(LFUN_REF_INSERT,
 392                                                                     type + "|++||++|"
 393                                                                     + label_list[k]);
 394                                 string label2 = label_list[k];
 395                                 if (label2.size() > max_item_length)
 396                                         label2 = label2.substr(0, max_item_length-1) + "$";
 397                                 label2 += "%x" + tostr(action + action_offset);
 398                                 fl_addtopup(menu2, label2.c_str());
 399                         }
 400                         label += "%m";
 401                         fl_addtopup(menu, label.c_str(), menu2);
 402                 }
 403         }
 404 }
 405
 406
 407 void Menubar::Pimpl::add_references(int menu, string const & extra_label,
 408                                     vector<int> & smn, Window win)
 409 {
 410         //xgettext:no-c-format
 411         static char const * MenuNames[6] = { N_("Insert Reference%m"),
 412         //xgettext:no-c-format
 413                                              N_("Insert Page Number%m"),
 414         //xgettext:no-c-format
 415                                              N_("Insert vref%m"),
 416         //xgettext:no-c-format
 417                                              N_("Insert vpageref%m"),
 418         //xgettext:no-c-format
 419                                              N_("Insert Pretty Ref%m"),
 420         //xgettext:no-c-format
 421                                              N_("Goto Reference%m") };
 422
 423         int const EMPTY = 1;
 424         int const SGML = 2;
 425         int const READONLY = 4;
 426
 427         static int MenuFlags[6] = {
 428                 EMPTY | READONLY,
 429                 EMPTY | READONLY,
 430                 EMPTY | READONLY | SGML,
 431                 EMPTY | READONLY | SGML,
 432                 EMPTY | READONLY | SGML,
 433                 EMPTY };
 434
 435         static string const MenuTypes[6] = {
 436                 "ref", "pageref", "vref", "vpageref", "prettyref", "goto" };
 437
 438         vector<string> label_list = owner_->buffer()->getLabelList();
 439
 440         int flag = 0;
 441         if (label_list.empty())
 442                 flag += EMPTY;
 443         if (owner_->buffer()->isSGML())
 444                 flag += SGML;
 445         if (owner_->buffer()->isReadonly())
 446                 flag += READONLY;
 447
 448         int max_nonempty = -1;
 449         for (int i = 0; i < 6; ++i)
 450                 if ((MenuFlags[i] & flag) == 0)
 451                         max_nonempty = i;
 452
 453         for (int i = 0; i < 6; ++i) {
 454                 if ((MenuFlags[i] & flag) == 0) {
 455                         string label = _(MenuNames[i]);
 456                         if (i == max_nonempty)
 457                                 label += extra_label;
 458                         int menu2 = get_new_submenu(smn, win);
 459                         add_references2(menu2, smn, win, label_list,
 460                                         MenuTypes[i]);
 461                         fl_addtopup(menu, label.c_str(), menu2);
 462                 }
 463         }
 464 }
 465
 466
 467 int Menubar::Pimpl::create_submenu(Window win, LyXView * view,
 468                                    string const & menu_name,
 469                                    vector<int> & smn)
 470 {
 471         if (!menubackend_->hasMenu(menu_name)){
 472                 lyxerr << "ERROR:create_submenu: Unknown menu `"
 473                        << menu_name << "'" << endl;
 474                 return -1;
 475         }
 476         Menu md = Menu();
 477         menubackend_->getMenu(menu_name).expand(md, owner_->buffer());
 478
 479         int menu = get_new_submenu(smn, win);
 480         fl_setpup_softedge(menu, true);
 481         fl_setpup_bw(menu, -1);
 482         lyxerr[Debug::GUI] << "Adding menu " << menu
 483                            << " in deletion list" << endl;
 484
 485         // Compute the size of the largest label (because xforms is
 486         // not able to support shortcuts correctly...)
 487         int max_width = 0;
 488         string widest_label;
 489         Menu::const_iterator end = md.end();
 490         for (Menu::const_iterator i = md.begin(); i != end; ++i) {
 491                 MenuItem const & item = (*i);
 492                 if (item.kind() == MenuItem::Command) {
 493                         string label = item.label() + '\t';
 494                         int width = string_width(label);
 495                         if (width > max_width) {
 496                                 max_width = width;
 497                                 widest_label = label;
 498                         }
 499                 }
 500         }
 501         lyxerr[Debug::GUI] << "max_width=" << max_width
 502                            << ", widest_label=`" << widest_label
 503                            << "'" << endl;
 504
 505         // Compute where to put separators
 506         vector<string> extra_labels(md.size());
 507         vector<string>::iterator it = extra_labels.begin();
 508         vector<string>::iterator last = it;
 509         for (Menu::const_iterator i = md.begin(); i != end; ++i, ++it)
 510                 if (i->kind() == MenuItem::Separator)
 511                         *last = "%l";
 512                 else if (!i->optional() ||
 513                          !(view->getLyXFunc()->getStatus(i->action()) & LyXFunc::Disabled))
 514                         last = it;
 515
 516         it = extra_labels.begin();
 517         for (Menu::const_iterator i = md.begin(); i != end; ++i, ++it) {
 518                 MenuItem const & item = (*i);
 519                 string & extra_label = *it;
 520
 521                 switch (item.kind()) {
 522                 case MenuItem::Command: {
 523                         LyXFunc::func_status flag =
 524                                 view->getLyXFunc()->getStatus(item.action());
 525
 526                         // handle optional entries.
 527                         if (item.optional() && (flag & LyXFunc::Disabled)) {
 528                                 lyxerr[Debug::GUI]
 529                                         << "Skipping optional item "
 530                                         << item.label() << endl;
 531                                 break;
 532                         }
 533
 534                         // Get the keys bound to this action, but keep only the
 535                         // first one later
 536                         string accel = toplevel_keymap->findbinding(item.action());
 537                         // Build the menu label from all the info
 538                         string label = item.label();
 539
 540                         if (!accel.empty()) {
 541                                 // Try to be clever and add  just enough
 542                                 // tabs to align shortcuts.
 543                                 do
 544                                         label += '\t';
 545                                 while (string_width(label) < max_width);
 546                                 label += accel.substr(1,accel.find(']') - 1);
 547                         }
 548                         label += "%x" + tostr(item.action() + action_offset)
 549                                 + extra_label;
 550
 551                         // Modify the entry using the function status
 552                         string pupmode;
 553                         if (flag & (LyXFunc::Disabled | LyXFunc::Unknown))
 554                                 pupmode += "%i";
 555                         if (flag & LyXFunc::ToggleOn)
 556                                 pupmode += "%B";
 557                         if (flag & LyXFunc::ToggleOff)
 558                                 pupmode += "%b";
 559                         label += pupmode;
 560
 561                         // Finally the menu shortcut
 562                         string shortcut = item.shortcut();
 563
 564                         if (!shortcut.empty()) {
 565                                 shortcut += lowercase(shortcut[0]);
 566                                 label += "%h";
 567                                 fl_addtopup(menu, label.c_str(),
 568                                             shortcut.c_str());
 569                         } else
 570                                 fl_addtopup(menu, label.c_str());
 571
 572                         lyxerr[Debug::GUI] << "Command: \""
 573                                            << lyxaction.getActionName(item.action())
 574                                            << "\", binding \"" << accel
 575                                            << "\", shortcut \"" << shortcut
 576                                            << "\"" << endl;
 577                         break;
 578                 }
 579
 580                 case MenuItem::Submenu: {
 581                         int submenu = create_submenu(win, view,
 582                                                      item.submenu(), smn);
 583                         if (submenu == -1)
 584                                 return -1;
 585                         string label = item.label();
 586                         label += extra_label + "%m";
 587                         string shortcut = item.shortcut();
 588                         if (!shortcut.empty()) {
 589                                 shortcut += lowercase(shortcut[0]);
 590                                 label += "%h";
 591                                 fl_addtopup(menu, label.c_str(),
 592                                             submenu, shortcut.c_str());
 593                         }
 594                         else {
 595                                 fl_addtopup(menu, label.c_str(), submenu);
 596                         }
 597                         break;
 598                 }
 599
 600                 case MenuItem::Separator:
 601                         // already done, and if it was the first one,
 602                         // we just ignore it.
 603                         break;
 604
 605                 case MenuItem::Toc:
 606                         add_toc(menu, extra_label, smn, win);
 607                         break;
 608
 609                 case MenuItem::References:
 610                         add_references(menu, extra_label, smn, win);
 611                         break;
 612
 613                 case MenuItem::Documents:
 614                 case MenuItem::Lastfiles:
 615                 case MenuItem::ViewFormats:
 616                 case MenuItem::UpdateFormats:
 617                 case MenuItem::ExportFormats:
 618                 case MenuItem::ImportFormats:
 619                         lyxerr << "Menubar::Pimpl::create_submenu: "
 620                                 "this should not happen" << endl;
 621                         break;
 622
 623                 }
 624         }
 625         return menu;
 626 }
 627
 628 extern "C"
 629 void C_Menubar_Pimpl_MenuCallback(FL_OBJECT * ob, long button)
 630 {
 631         Menubar::Pimpl::MenuCallback(ob, button);
 632 }
 633
 634
 635 void Menubar::Pimpl::MenuCallback(FL_OBJECT * ob, long button)
 636 {
 637         ItemInfo * iteminfo = static_cast<ItemInfo *>(ob->u_vdata);
 638 //      lyxerr << "MenuCallback: ItemInfo address=" << iteminfo
 639 //             << "Val=(pimpl_=" << iteminfo->pimpl_
 640 //             << ", item_=" << iteminfo->item_
 641 //             << ", obj_=" << iteminfo->obj_ << ")" <<endl;
 642
 643         LyXView * view = iteminfo->pimpl_->owner_;
 644         MenuItem const * item = iteminfo->item_;
 645
 646         if (button == 1) {
 647                 // set the pseudo menu-button
 648                 fl_set_object_boxtype(ob, FL_DOWN_BOX);
 649                 fl_set_button(ob, 0);
 650                 fl_redraw_object(ob);
 651         }
 652
 653         // Paranoia check
 654         Assert(item->kind() == MenuItem::Submenu);
 655
 656         // set tabstop length
 657         fl_set_tabstop(menu_tabstop);
 658         vector<int> submenus;
 659         int menu = iteminfo->pimpl_->
 660                 create_submenu(FL_ObjWin(ob), view,
 661                                item->submenu(), submenus);
 662         if (menu != -1) {
 663                 // place popup
 664                 fl_setpup_position(view->getForm()->x + ob->x,
 665                                    view->getForm()->y + ob->y + ob->h + 10);
 666                 int choice = fl_dopup(menu);
 667
 668                 if (button == 1) {
 669                                 // set the pseudo menu-button back
 670                         fl_set_object_boxtype(ob, FL_FLAT_BOX);
 671                         fl_redraw_object(ob);
 672                 }
 673
 674                 // If the action value is too low, then it is not a
 675                 // valid action, but something else.
 676                 if (choice >= action_offset + 1) {
 677                         view->getLyXFunc()->Dispatch(choice - action_offset);
 678                 }
 679                 else {
 680                         lyxerr[Debug::GUI]
 681                                 << "MenuCallback: ignoring bogus action "
 682                                 << choice << endl;
 683                 }
 684         }
 685         else
 686                 lyxerr << "Error in MenuCallback" << endl;
 687
 688         std::for_each(submenus.begin(), submenus.end(), fl_freepup);
 689         // restore tabstop length
 690         fl_set_tabstop(default_tabstop);
 691
 692 }