src/insets/InsetInfo.cpp

   1 /**
   2  * \file InsetInfo.cpp
   3  * This file is part of LyX, the document processor.
   4  * Licence details can be found in the file COPYING.
   5  *
   6  * \author Bo Peng
   7  *
   8  * Full author contact details are available in file CREDITS.
   9  */
  10 #include <config.h>
  11
  12 #include "InsetInfo.h"
  13 #include "LyX.h"
  14 #include "Buffer.h"
  15 #include "BufferParams.h"
  16 #include "BufferView.h"
  17 #include "CutAndPaste.h"
  18 #include "FuncRequest.h"
  19 #include "FuncStatus.h"
  20 #include "InsetGraphics.h"
  21 #include "InsetSpecialChar.h"
  22 #include "KeyMap.h"
  23 #include "LaTeXFeatures.h"
  24 #include "Language.h"
  25 #include "LayoutFile.h"
  26 #include "Length.h"
  27 #include "LyXAction.h"
  28 #include "LyXRC.h"
  29 #include "LyXVC.h"
  30 #include "Lexer.h"
  31 #include "ParagraphParameters.h"
  32 #include "version.h"
  33
  34 #include "frontends/Application.h"
  35
  36 #include "support/convert.h"
  37 #include "support/debug.h"
  38 #include "support/docstream.h"
  39 #include "support/docstring_list.h"
  40 #include "support/ExceptionMessage.h"
  41 #include "support/FileName.h"
  42 #include "support/filetools.h"
  43 #include "support/gettext.h"
  44 #include "support/lstrings.h"
  45 #include "support/qstring_helpers.h"
  46 #include "support/Translator.h"
  47
  48 #include <sstream>
  49
  50 #include <QtGui/QImage>
  51
  52 using namespace std;
  53 using namespace lyx::support;
  54
  55 namespace lyx {
  56
  57 namespace {
  58
  59 typedef Translator<InsetInfo::info_type, string> NameTranslator;
  60
  61 NameTranslator const initTranslator()
  62 {
  63         NameTranslator translator(InsetInfo::UNKNOWN_INFO, "unknown");
  64
  65         translator.addPair(InsetInfo::SHORTCUTS_INFO, "shortcuts");
  66         translator.addPair(InsetInfo::SHORTCUT_INFO, "shortcut");
  67         translator.addPair(InsetInfo::LYXRC_INFO, "lyxrc");
  68         translator.addPair(InsetInfo::PACKAGE_INFO, "package");
  69         translator.addPair(InsetInfo::TEXTCLASS_INFO, "textclass");
  70         translator.addPair(InsetInfo::MENU_INFO, "menu");
  71         translator.addPair(InsetInfo::ICON_INFO, "icon");
  72         translator.addPair(InsetInfo::BUFFER_INFO, "buffer");
  73         translator.addPair(InsetInfo::LYX_INFO, "lyxinfo");
  74
  75         return translator;
  76 }
  77
  78 /// The translator between the information type enum and corresponding string.
  79 NameTranslator const & nameTranslator()
  80 {
  81         static NameTranslator const translator = initTranslator();
  82         return translator;
  83 }
  84
  85 } // namespace
  86
  87 /////////////////////////////////////////////////////////////////////////
  88 //
  89 // InsetInfo
  90 //
  91 /////////////////////////////////////////////////////////////////////////
  92
  93
  94
  95 InsetInfo::InsetInfo(Buffer * buf, string const & name)
  96         : InsetCollapsible(buf), initialized_(false),
  97           type_(UNKNOWN_INFO), name_()
  98 {
  99         setInfo(name);
 100         status_ = Collapsed;
 101 }
 102
 103
 104 Inset * InsetInfo::editXY(Cursor & cur, int x, int y)
 105 {
 106         // do not allow the cursor to be set in this Inset
 107         return Inset::editXY(cur, x, y);
 108 }
 109
 110
 111 string InsetInfo::infoType() const
 112 {
 113         return nameTranslator().find(type_);
 114 }
 115
 116
 117 docstring InsetInfo::layoutName() const
 118 {
 119         return from_ascii("Info:" + infoType());
 120 }
 121
 122
 123 docstring InsetInfo::toolTip(BufferView const &, int, int) const
 124 {
 125         return bformat(_("Information regarding %1$s '%2$s'"),
 126                         _(infoType()), from_utf8(name_));
 127 }
 128
 129
 130 void InsetInfo::read(Lexer & lex)
 131 {
 132         string token;
 133         while (lex.isOK()) {
 134                 lex.next();
 135                 token = lex.getString();
 136                 if (token == "type") {
 137                         lex.next();
 138                         token = lex.getString();
 139                         type_ = nameTranslator().find(token);
 140                 } else if (token == "arg") {
 141                         lex.next(true);
 142                         name_ = lex.getString();
 143                 } else if (token == "\\end_inset")
 144                         break;
 145         }
 146         if (token != "\\end_inset") {
 147                 lex.printError("Missing \\end_inset at this point");
 148                 throw ExceptionMessage(WarningException,
 149                         _("Missing \\end_inset at this point."),
 150                         from_utf8(token));
 151         }
 152 }
 153
 154
 155 void InsetInfo::write(ostream & os) const
 156 {
 157         os << "Info\ntype  \"" << infoType()
 158            << "\"\narg   " << Lexer::quoteString(name_);
 159 }
 160
 161
 162 bool InsetInfo::validateModifyArgument(docstring const & arg) const
 163 {
 164         string type;
 165         string const name = trim(split(to_utf8(arg), type, ' '));
 166
 167         switch (nameTranslator().find(type)) {
 168         case UNKNOWN_INFO:
 169                 return false;
 170
 171         case SHORTCUT_INFO:
 172         case SHORTCUTS_INFO:
 173         case MENU_INFO: {
 174                 FuncRequest func = lyxaction.lookupFunc(name);
 175                 return func.action() != LFUN_UNKNOWN_ACTION;
 176         }
 177
 178         case ICON_INFO: {
 179                 FuncCode const action = lyxaction.lookupFunc(name).action();
 180                 if (action == LFUN_UNKNOWN_ACTION) {
 181                         string dir = "images";
 182                         return !imageLibFileSearch(dir, name, "svgz,png").empty();
 183                 }
 184                 return true;
 185         }
 186
 187         case LYXRC_INFO: {
 188                 ostringstream oss;
 189                 lyxrc.write(oss, true, name);
 190                 return !oss.str().empty();
 191         }
 192
 193         case PACKAGE_INFO:
 194         case TEXTCLASS_INFO:
 195                 return true;
 196
 197         case BUFFER_INFO:
 198                 if (name == "name" || name == "path" || name == "class")
 199                         return true;
 200                 if (name == "vcs-revision" || name == "vcs-tree-revision" ||
 201                        name == "vcs-author" || name == "vcs-date" || name == "vcs-time")
 202                         return buffer().lyxvc().inUse();
 203                 return false;
 204
 205         case LYX_INFO:
 206                 return name == "version";
 207         }
 208
 209         return false;
 210 }
 211
 212
 213 bool InsetInfo::showInsetDialog(BufferView * bv) const
 214 {
 215         bv->showDialog("info");
 216         return true;
 217 }
 218
 219
 220 bool InsetInfo::getStatus(Cursor & cur, FuncRequest const & cmd,
 221                 FuncStatus & flag) const
 222 {
 223         switch (cmd.action()) {
 224         case LFUN_INSET_SETTINGS:
 225                 return InsetCollapsible::getStatus(cur, cmd, flag);
 226
 227         case LFUN_INSET_DIALOG_UPDATE:
 228         case LFUN_INSET_COPY_AS:
 229                 flag.setEnabled(true);
 230                 return true;
 231
 232         case LFUN_INSET_MODIFY:
 233                 if (validateModifyArgument(cmd.argument())) {
 234                         flag.setEnabled(true);
 235                         return true;
 236                 }
 237                 //fall through
 238
 239         default:
 240                 return false;
 241         }
 242 }
 243
 244
 245 void InsetInfo::doDispatch(Cursor & cur, FuncRequest & cmd)
 246 {
 247         switch (cmd.action()) {
 248         case LFUN_INSET_MODIFY:
 249                 cur.recordUndo();
 250                 setInfo(to_utf8(cmd.argument()));
 251                 cur.forceBufferUpdate();
 252                 initialized_ = false;
 253                 break;
 254
 255         case LFUN_INSET_COPY_AS: {
 256                 cap::clearSelection();
 257                 Cursor copy(cur);
 258                 copy.pushBackward(*this);
 259                 copy.pit() = 0;
 260                 copy.pos() = 0;
 261                 copy.resetAnchor();
 262                 copy.pit() = copy.lastpit();
 263                 copy.pos() = copy.lastpos();
 264                 copy.setSelection();
 265                 cap::copySelection(copy);
 266                 break;
 267         }
 268
 269         default:
 270                 InsetCollapsible::doDispatch(cur, cmd);
 271                 break;
 272         }
 273 }
 274
 275
 276 void InsetInfo::setInfo(string const & name)
 277 {
 278         if (name.empty())
 279                 return;
 280         // info_type name
 281         string type;
 282         name_ = trim(split(name, type, ' '));
 283         type_ = nameTranslator().find(type);
 284 }
 285
 286
 287 void InsetInfo::error(string const & err)
 288 {
 289         setText(bformat(_(err), from_utf8(name_)),
 290                 Font(inherit_font, buffer().params().language), false);
 291 }
 292
 293
 294 void InsetInfo::setText(docstring const & str)
 295 {
 296         setText(str, Font(inherit_font, buffer().params().language), false);
 297 }
 298
 299
 300 bool InsetInfo::forceLTR() const
 301 {
 302         return !buffer().params().language->rightToLeft();
 303 }
 304
 305
 306 void InsetInfo::updateBuffer(ParIterator const & it, UpdateType utype) {
 307         // If the Buffer is a clone, then we neither need nor want to do any
 308         // of what follows. We want, rather, just to inherit how things were
 309         // in the original Buffer. This is especially important for VCS.
 310         // Otherwise, we could in principle have different settings here
 311         // than in the Buffer we were exporting.
 312         if (buffer().isClone())
 313                 return;
 314
 315         BufferParams const & bp = buffer().params();
 316
 317         switch (type_) {
 318         case UNKNOWN_INFO:
 319                 error("Unknown Info: %1$s");
 320                 initialized_ = false;
 321                 break;
 322         case SHORTCUT_INFO:
 323         case SHORTCUTS_INFO: {
 324                 // shortcuts can change, so we need to re-do this each time
 325                 FuncRequest const func = lyxaction.lookupFunc(name_);
 326                 if (func.action() == LFUN_UNKNOWN_ACTION) {
 327                         error("Unknown action %1$s");
 328                         break;
 329                 }
 330                 KeyMap::Bindings bindings = theTopLevelKeymap().findBindings(func);
 331                 if (bindings.empty()) {
 332                         // It is impropriate to use error() for undefined shortcut
 333                         setText(_("undefined"));
 334                         break;
 335                 }
 336                 if (type_ == SHORTCUT_INFO)
 337                         setText(bindings.begin()->print(KeySequence::Portable));
 338                 else
 339                         setText(theTopLevelKeymap().printBindings(func, KeySequence::Portable));
 340                 break;
 341         }
 342         case LYXRC_INFO: {
 343                 // this information could change, if the preferences are changed,
 344                 // so we will recalculate each time through.
 345                 ostringstream oss;
 346                 if (name_.empty()) {
 347                         setText(_("undefined"));
 348                         break;
 349                 }
 350                 // FIXME this uses the serialization mechanism to get the info
 351                 // we want, which i guess works but is a bit strange.
 352                 lyxrc.write(oss, true, name_);
 353                 string result = oss.str();
 354                 if (result.size() < 2) {
 355                         setText(_("undefined"));
 356                         break;
 357                 }
 358                 string::size_type loc = result.rfind("\n", result.size() - 2);
 359                 loc = loc == string::npos ? 0 : loc + 1;
 360                 if (result.size() < loc + name_.size() + 1
 361                           || result.substr(loc + 1, name_.size()) != name_) {
 362                         setText(_("undefined"));
 363                         break;
 364                 }
 365                 // remove leading comments and \\name and space
 366                 result = result.substr(loc + name_.size() + 2);
 367
 368                 // remove \n and ""
 369                 result = rtrim(result, "\n");
 370                 result = trim(result, "\"");
 371                 setText(from_utf8(result));
 372                 break;
 373         }
 374         case PACKAGE_INFO:
 375                 // only need to do this once.
 376                 if (initialized_)
 377                         break;
 378                 // check in packages.lst
 379                 setText(LaTeXFeatures::isAvailable(name_) ? _("yes") : _("no"));
 380                 initialized_ = true;
 381                 break;
 382
 383         case TEXTCLASS_INFO: {
 384                 // the TextClass can change
 385                 LayoutFileList const & list = LayoutFileList::get();
 386                 bool available = false;
 387                 // name_ is the class name
 388                 if (list.haveClass(name_))
 389                         available = list[name_].isTeXClassAvailable();
 390                 setText(available ? _("yes") : _("no"));
 391                 break;
 392         }
 393         case MENU_INFO: {
 394                 // only need to do this once.
 395                 if (initialized_)
 396                         break;
 397                 // and we will not keep trying if we fail
 398                 initialized_ = true;
 399                 docstring_list names;
 400                 FuncRequest const func = lyxaction.lookupFunc(name_);
 401                 if (func.action() == LFUN_UNKNOWN_ACTION) {
 402                         error("Unknown action %1$s");
 403                         break;
 404                 }
 405                 // iterate through the menubackend to find it
 406                 if (!theApp()) {
 407                         error("Can't determine menu entry for action %1$s in batch mode");
 408                         break;
 409                 }
 410                 if (!theApp()->searchMenu(func, names)) {
 411                         error("No menu entry for action %1$s");
 412                         break;
 413                 }
 414                 // if found, return its path.
 415                 clear();
 416                 Paragraph & par = paragraphs().front();
 417                 Font const f(inherit_font, buffer().params().language);
 418                 //Font fu = f;
 419                 //fu.fontInfo().setUnderbar(FONT_ON);
 420                 for (docstring const & name : names) {
 421                         // do not insert > for the top level menu item
 422                         if (&name != &names.front())
 423                                 par.insertInset(par.size(), new InsetSpecialChar(InsetSpecialChar::MENU_SEPARATOR),
 424                                                 f, Change(Change::UNCHANGED));
 425                         //FIXME: add proper underlines here. This
 426                         // involves rewriting searchMenu used above to
 427                         // return a vector of menus. If we do not do
 428                         // that, we might as well use below
 429                         // Paragraph::insert on each string (JMarc)
 430                         for (char_type c : name)
 431                                 par.insertChar(par.size(), c, f, Change(Change::UNCHANGED));
 432                 }
 433                 break;
 434         }
 435         case ICON_INFO: {
 436                 // only need to do this once.
 437                 if (initialized_)
 438                         break;
 439                 // and we will not keep trying if we fail
 440                 initialized_ = true;
 441                 FuncRequest func = lyxaction.lookupFunc(name_);
 442                 docstring icon_name = frontend::Application::iconName(func, true);
 443                 // FIXME: We should use the icon directly instead of
 444                 // going through FileName. The code below won't work
 445                 // if the icon is embedded in the executable through
 446                 // the Qt resource system.
 447                 // This is only a negligible performance problem:
 448                 // If the installed icon differs from the resource icon the
 449                 // installed one is preferred anyway, and all icons that are
 450                 // embedded in the resources are installed as well.
 451                 FileName file(to_utf8(icon_name));
 452                 if (file.onlyFileNameWithoutExt() == "unknown") {
 453                         string dir = "images";
 454                         FileName file2(imageLibFileSearch(dir, name_, "svgz,png"));
 455                         if (!file2.empty())
 456                                 file = file2;
 457                 }
 458                 if (!file.exists())
 459                         break;
 460                 int percent_scale = 100;
 461                 if (use_gui) {
 462                         // Compute the scale factor for the icon such that its
 463                         // width on screen is equal to 1em in pixels.
 464                         // The scale factor is rounded to the integer nearest
 465                         // to the float value of the ratio 100*iconsize/imgsize.
 466                         int imgsize = QImage(toqstr(file.absFileName())).width();
 467                         if (imgsize > 0) {
 468                                 int iconsize = Length(1, Length::EM).inPixels(1);
 469                                 percent_scale = (100 * iconsize + imgsize / 2)/imgsize;
 470                         }
 471                 }
 472                 InsetGraphics * inset = new InsetGraphics(buffer_);
 473                 InsetGraphicsParams igp;
 474                 igp.filename = file;
 475                 igp.lyxscale = percent_scale;
 476                 igp.scale = string();
 477                 igp.width = Length(1, Length::EM);
 478                 inset->setParams(igp);
 479                 clear();
 480                 Font const f(inherit_font, buffer().params().language);
 481                 paragraphs().front().insertInset(0, inset, f,
 482                                                  Change(Change::UNCHANGED));
 483                 break;
 484         }
 485         case BUFFER_INFO: {
 486                 // this could all change, so we will recalculate each time
 487                 if (name_ == "name") {
 488                         setText(from_utf8(buffer().fileName().onlyFileName()));
 489                         break;
 490                 }
 491                 if (name_ == "path") {
 492                         setText(from_utf8(os::latex_path(buffer().filePath())));
 493                         break;
 494                 }
 495                 if (name_ == "class") {
 496                         setText(from_utf8(bp.documentClass().name()));
 497                         break;
 498                 }
 499
 500                 ////////////////////////////////////////////////////////////////
 501                 // everything that follows is for version control.
 502                 // nothing that isn't version control should go below this line.
 503
 504                 // this information could change, in principle, so we will
 505                 // recalculate each time through
 506                 if (!buffer().lyxvc().inUse()) {
 507                         setText(_("No version control"));
 508                         break;
 509                 }
 510                 LyXVC::RevisionInfo itype = LyXVC::Unknown;
 511                 if (name_ == "vcs-revision")
 512                         itype = LyXVC::File;
 513                 else if (name_ == "vcs-tree-revision")
 514                         itype = LyXVC::Tree;
 515                 else if (name_ == "vcs-author")
 516                         itype = LyXVC::Author;
 517                 else if (name_ == "vcs-time")
 518                         itype = LyXVC::Time;
 519                 else if (name_ == "vcs-date")
 520                         itype = LyXVC::Date;
 521                 string binfo = buffer().lyxvc().revisionInfo(itype);
 522                 if (binfo.empty())
 523                         setText(from_ascii(name_) + " unknown");
 524                 else
 525                         setText(from_utf8(binfo));
 526                 break;
 527         }
 528         case LYX_INFO:
 529                 // only need to do this once.
 530                 if (initialized_)
 531                         break;
 532                 if (name_ == "version")
 533                         setText(from_ascii(lyx_version));
 534                 initialized_ = true;
 535                 break;
 536         }
 537         InsetCollapsible::updateBuffer(it, utype);
 538 }
 539
 540
 541 string InsetInfo::contextMenu(BufferView const &, int, int) const
 542 {
 543         //FIXME: We override the implementation of InsetCollapsible,
 544         //because this inset is not a collapsible inset.
 545         return contextMenuName();
 546 }
 547
 548
 549 string InsetInfo::contextMenuName() const
 550 {
 551         return "context-info";
 552 }
 553
 554
 555 } // namespace lyx