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[lyx.git] / src / insets / InsetInclude.cpp
1 /**
2  * \file InsetInclude.cpp
3  * This file is part of LyX, the document processor.
4  * Licence details can be found in the file COPYING.
5  *
6  * \author Lars Gullik Bjønnes
7  *
8  * Full author contact details are available in file CREDITS.
9  */
10
11 #include <config.h>
12
13 #include "InsetInclude.h"
14
15 #include "Buffer.h"
16 #include "buffer_funcs.h"
17 #include "BufferList.h"
18 #include "BufferParams.h"
19 #include "BufferView.h"
20 #include "Cursor.h"
21 #include "debug.h"
22 #include "DispatchResult.h"
23 #include "Exporter.h"
24 #include "FuncRequest.h"
25 #include "FuncStatus.h"
26 #include "gettext.h"
27 #include "LaTeXFeatures.h"
28 #include "LyX.h"
29 #include "LyXRC.h"
30 #include "Lexer.h"
31 #include "MetricsInfo.h"
32 #include "OutputParams.h"
33 #include "TocBackend.h"
34
35 #include "frontends/alert.h"
36 #include "frontends/Painter.h"
37
38 #include "graphics/PreviewImage.h"
39 #include "graphics/PreviewLoader.h"
40
41 #include "insets/RenderPreview.h"
42 #include "insets/InsetListingsParams.h"
43
44 #include "support/filetools.h"
45 #include "support/lstrings.h" // contains
46 #include "support/lyxalgo.h"
47 #include "support/lyxlib.h"
48 #include "support/convert.h"
49
50 #include <boost/bind.hpp>
51 #include <boost/filesystem/operations.hpp>
52
53
54 namespace lyx {
55   
56 // Implementation is in LyX.cpp
57 extern void dispatch(FuncRequest const & action);
58
59 using support::addName;
60 using support::absolutePath;
61 using support::bformat;
62 using support::changeExtension;
63 using support::contains;
64 using support::copy;
65 using support::DocFileName;
66 using support::FileName;
67 using support::getFileContents;
68 using support::getVectorFromString;
69 using support::isFileReadable;
70 using support::isLyXFilename;
71 using support::isValidLaTeXFilename;
72 using support::latex_path;
73 using support::makeAbsPath;
74 using support::makeDisplayPath;
75 using support::makeRelPath;
76 using support::onlyFilename;
77 using support::onlyPath;
78 using support::prefixIs;
79 using support::subst;
80 using support::sum;
81
82 using std::endl;
83 using std::string;
84 using std::auto_ptr;
85 using std::istringstream;
86 using std::ostream;
87 using std::ostringstream;
88 using std::vector;
89
90 namespace Alert = frontend::Alert;
91 namespace fs = boost::filesystem;
92
93
94 namespace {
95
96 docstring const uniqueID()
97 {
98         static unsigned int seed = 1000;
99         return "file" + convert<docstring>(++seed);
100 }
101
102
103 bool isListings(InsetCommandParams const & params)
104 {
105         return params.getCmdName() == "lstinputlisting";
106 }
107
108 } // namespace anon
109
110
111 InsetInclude::InsetInclude(InsetCommandParams const & p)
112         : params_(p), include_label(uniqueID()),
113           preview_(new RenderMonitoredPreview(this)),
114           set_label_(false)
115 {
116         preview_->fileChanged(boost::bind(&InsetInclude::fileChanged, this));
117 }
118
119
120 InsetInclude::InsetInclude(InsetInclude const & other)
121         : Inset(other),
122           params_(other.params_),
123           include_label(other.include_label),
124           preview_(new RenderMonitoredPreview(this)),
125           set_label_(false)
126 {
127         preview_->fileChanged(boost::bind(&InsetInclude::fileChanged, this));
128 }
129
130
131 InsetInclude::~InsetInclude()
132 {
133         InsetIncludeMailer(*this).hideDialog();
134 }
135
136
137 void InsetInclude::doDispatch(Cursor & cur, FuncRequest & cmd)
138 {
139         switch (cmd.action) {
140
141         case LFUN_INSET_MODIFY: {
142                 InsetCommandParams p("include");
143                 InsetIncludeMailer::string2params(to_utf8(cmd.argument()), p);
144                 if (!p.getCmdName().empty()) {
145                         if (isListings(p)){
146                                 InsetListingsParams par_old(params().getOptions());
147                                 InsetListingsParams par_new(p.getOptions());
148                                 if (par_old.getParamValue("label") !=
149                                     par_new.getParamValue("label")
150                                     && !par_new.getParamValue("label").empty())
151                                         cur.bv().buffer()->changeRefsIfUnique(
152                                                 from_utf8(par_old.getParamValue("label")),
153                                                 from_utf8(par_new.getParamValue("label")),
154                                                 Inset::REF_CODE);
155                         }
156                         set(p, cur.buffer());
157                         cur.buffer().updateBibfilesCache();
158                 } else
159                         cur.noUpdate();
160                 break;
161         }
162
163         case LFUN_INSET_DIALOG_UPDATE:
164                 InsetIncludeMailer(*this).updateDialog(&cur.bv());
165                 break;
166
167         case LFUN_MOUSE_RELEASE:
168                 if (!cur.selection())
169                         InsetIncludeMailer(*this).showDialog(&cur.bv());
170                 break;
171
172         default:
173                 Inset::doDispatch(cur, cmd);
174                 break;
175         }
176 }
177
178
179 bool InsetInclude::getStatus(Cursor & cur, FuncRequest const & cmd,
180                 FuncStatus & flag) const
181 {
182         switch (cmd.action) {
183
184         case LFUN_INSET_MODIFY:
185         case LFUN_INSET_DIALOG_UPDATE:
186                 flag.enabled(true);
187                 return true;
188
189         default:
190                 return Inset::getStatus(cur, cmd, flag);
191         }
192 }
193
194
195 InsetCommandParams const & InsetInclude::params() const
196 {
197         return params_;
198 }
199
200
201 namespace {
202
203 /// the type of inclusion
204 enum Types {
205         INCLUDE = 0,
206         VERB = 1,
207         INPUT = 2,
208         VERBAST = 3,
209         LISTINGS = 4,
210 };
211
212
213 Types type(InsetCommandParams const & params)
214 {
215         string const command_name = params.getCmdName();
216
217         if (command_name == "input")
218                 return INPUT;
219         if  (command_name == "verbatiminput")
220                 return VERB;
221         if  (command_name == "verbatiminput*")
222                 return VERBAST;
223         if  (command_name == "lstinputlisting")
224                 return LISTINGS;
225         return INCLUDE;
226 }
227
228
229 bool isVerbatim(InsetCommandParams const & params)
230 {
231         string const command_name = params.getCmdName();
232         return command_name == "verbatiminput" ||
233                 command_name == "verbatiminput*";
234 }
235
236
237 bool isInputOrInclude(InsetCommandParams const & params)
238 {
239         Types const t = type(params);
240         return (t == INPUT) || (t == INCLUDE);
241 }
242
243
244 string const masterFilename(Buffer const & buffer)
245 {
246         return buffer.getMasterBuffer()->fileName();
247 }
248
249
250 string const parentFilename(Buffer const & buffer)
251 {
252         return buffer.fileName();
253 }
254
255
256 FileName const includedFilename(Buffer const & buffer,
257                               InsetCommandParams const & params)
258 {
259         return makeAbsPath(to_utf8(params["filename"]),
260                            onlyPath(parentFilename(buffer)));
261 }
262
263
264 void add_preview(RenderMonitoredPreview &, InsetInclude const &, Buffer const &);
265
266 } // namespace anon
267
268
269 void InsetInclude::set(InsetCommandParams const & p, Buffer const & buffer)
270 {
271         params_ = p;
272         set_label_ = false;
273
274         if (preview_->monitoring())
275                 preview_->stopMonitoring();
276
277         if (type(params_) == INPUT)
278                 add_preview(*preview_, *this, buffer);
279 }
280
281
282 auto_ptr<Inset> InsetInclude::doClone() const
283 {
284         return auto_ptr<Inset>(new InsetInclude(*this));
285 }
286
287
288 void InsetInclude::write(Buffer const &, ostream & os) const
289 {
290         write(os);
291 }
292
293
294 void InsetInclude::write(ostream & os) const
295 {
296         os << "Include " << to_utf8(params_.getCommand()) << '\n'
297            << "preview " << convert<string>(params_.preview()) << '\n';
298 }
299
300
301 void InsetInclude::read(Buffer const &, Lexer & lex)
302 {
303         read(lex);
304 }
305
306
307 void InsetInclude::read(Lexer & lex)
308 {
309         if (lex.isOK()) {
310                 lex.eatLine();
311                 string const command = lex.getString();
312                 params_.scanCommand(command);
313         }
314         string token;
315         while (lex.isOK()) {
316                 lex.next();
317                 token = lex.getString();
318                 if (token == "\\end_inset")
319                         break;
320                 if (token == "preview") {
321                         lex.next();
322                         params_.preview(lex.getBool());
323                 } else
324                         lex.printError("Unknown parameter name `$$Token' for command " + params_.getCmdName());
325         }
326         if (token != "\\end_inset") {
327                 lex.printError("Missing \\end_inset at this point. "
328                                "Read: `$$Token'");
329         }
330 }
331
332
333 docstring const InsetInclude::getScreenLabel(Buffer const & buf) const
334 {
335         docstring temp;
336
337         switch (type(params_)) {
338                 case INPUT:
339                         temp = buf.B_("Input");
340                         break;
341                 case VERB:
342                         temp = buf.B_("Verbatim Input");
343                         break;
344                 case VERBAST:
345                         temp = buf.B_("Verbatim Input*");
346                         break;
347                 case INCLUDE:
348                         temp = buf.B_("Include");
349                         break;
350                 case LISTINGS: {
351                         temp = listings_label_;
352                 }
353         }
354
355         temp += ": ";
356
357         if (params_["filename"].empty())
358                 temp += "???";
359         else
360                 temp += from_utf8(onlyFilename(to_utf8(params_["filename"])));
361
362         return temp;
363 }
364
365
366 namespace {
367
368 /// return the child buffer if the file is a LyX doc and is loaded
369 Buffer * getChildBuffer(Buffer const & buffer, InsetCommandParams const & params)
370 {
371         if (isVerbatim(params) || isListings(params))
372                 return 0;
373
374         string const included_file = includedFilename(buffer, params).absFilename();
375         if (!isLyXFilename(included_file))
376                 return 0;
377
378         Buffer * childBuffer = theBufferList().getBuffer(included_file);
379
380         //FIXME RECURSIVE INCLUDES
381         if (childBuffer == & buffer)
382                 return 0;
383         else
384                 return childBuffer;
385 }
386
387 } // namespace anon
388
389
390 Buffer * loadIfNeeded(Buffer const & buffer, InsetCommandParams const & params)
391 {
392         if (isVerbatim(params) || isListings(params))
393                 return 0;
394
395         FileName const included_file = includedFilename(buffer, params);
396         if (!isLyXFilename(included_file.absFilename()))
397                 return 0;
398
399         Buffer * buf = theBufferList().getBuffer(included_file.absFilename());
400         if (!buf) {
401                 // the readonly flag can/will be wrong, not anymore I think.
402                 if (!fs::exists(included_file.toFilesystemEncoding()))
403                         return false;
404                 if (use_gui) {
405                         lyx::dispatch(FuncRequest(LFUN_BUFFER_CHILD_OPEN,
406                                 included_file.absFilename() + "|true"));
407                         buf = theBufferList().getBuffer(included_file.absFilename());
408                 }
409                 else {
410                         buf = theBufferList().newBuffer(included_file.absFilename());
411                         if (!loadLyXFile(buf, included_file)) {
412                                 //close the buffer we just opened
413                                 theBufferList().close(buf, false);
414                                 return false;
415                         }
416                 }
417                 return buf;
418         }
419         buf->setParentName(parentFilename(buffer));
420         return buf;
421 }
422
423
424 int InsetInclude::latex(Buffer const & buffer, odocstream & os,
425                         OutputParams const & runparams) const
426 {
427         string incfile(to_utf8(params_["filename"]));
428
429         // Do nothing if no file name has been specified
430         if (incfile.empty())
431                 return 0;
432
433         FileName const included_file(includedFilename(buffer, params_));
434
435         //Check we're not trying to include ourselves.
436         //FIXME RECURSIVE INCLUDE
437         //This isn't sufficient, as the inclusion could be downstream.
438         //But it'll have to do for now.
439         if (isInputOrInclude(params_) &&
440                 buffer.fileName() == included_file.absFilename())
441         {
442                 Alert::error(_("Recursive input"),
443                                bformat(_("Attempted to include file %1$s in itself! "
444                                "Ignoring inclusion."), from_utf8(incfile)));
445                 return 0;
446         }
447
448         Buffer const * const m_buffer = buffer.getMasterBuffer();
449
450         // if incfile is relative, make it relative to the master
451         // buffer directory.
452         if (!absolutePath(incfile)) {
453                 // FIXME UNICODE
454                 incfile = to_utf8(makeRelPath(from_utf8(included_file.absFilename()),
455                                               from_utf8(m_buffer->filePath())));
456         }
457
458         // write it to a file (so far the complete file)
459         string const exportfile = changeExtension(incfile, ".tex");
460         string const mangled =
461                 DocFileName(changeExtension(included_file.absFilename(),".tex")).
462                         mangledFilename();
463         FileName const writefile(makeAbsPath(mangled, m_buffer->temppath()));
464
465         if (!runparams.nice)
466                 incfile = mangled;
467         else if (!isValidLaTeXFilename(incfile)) {
468                 frontend::Alert::warning(_("Invalid filename"),
469                                          _("The following filename is likely to cause trouble "
470                                            "when running the exported file through LaTeX: ") +
471                                             from_utf8(incfile));
472         }
473         LYXERR(Debug::LATEX) << "incfile:" << incfile << endl;
474         LYXERR(Debug::LATEX) << "exportfile:" << exportfile << endl;
475         LYXERR(Debug::LATEX) << "writefile:" << writefile << endl;
476
477         if (runparams.inComment || runparams.dryrun) {
478                 //Don't try to load or copy the file if we're
479                 //in a comment or doing a dryrun
480         } else if (isInputOrInclude(params_) &&
481                  isLyXFilename(included_file.absFilename())) {
482                 //if it's a LyX file and we're inputting or including,
483                 //try to load it so we can write the associated latex
484                 if (!loadIfNeeded(buffer, params_))
485                         return false;
486
487                 Buffer * tmp = theBufferList().getBuffer(included_file.absFilename());
488
489                 if (tmp->params().textclass != m_buffer->params().textclass) {
490                         // FIXME UNICODE
491                         docstring text = bformat(_("Included file `%1$s'\n"
492                                                 "has textclass `%2$s'\n"
493                                                              "while parent file has textclass `%3$s'."),
494                                               makeDisplayPath(included_file.absFilename()),
495                                               from_utf8(tmp->params().getTextClass().name()),
496                                               from_utf8(m_buffer->params().getTextClass().name()));
497                         Alert::warning(_("Different textclasses"), text);
498                         //return 0;
499                 }
500
501                 tmp->markDepClean(m_buffer->temppath());
502
503 // FIXME: handle non existing files
504 // FIXME: Second argument is irrelevant!
505 // since only_body is true, makeLaTeXFile will not look at second
506 // argument. Should we set it to string(), or should makeLaTeXFile
507 // make use of it somehow? (JMarc 20031002)
508                 // The included file might be written in a different encoding
509                 Encoding const * const oldEnc = runparams.encoding;
510                 runparams.encoding = &tmp->params().encoding();
511                 tmp->makeLaTeXFile(writefile,
512                                    onlyPath(masterFilename(buffer)),
513                                    runparams, false);
514                 runparams.encoding = oldEnc;
515         } else {
516                 // In this case, it's not a LyX file, so we copy the file
517                 // to the temp dir, so that .aux files etc. are not created
518                 // in the original dir. Files included by this file will be
519                 // found via input@path, see ../Buffer.cpp.
520                 unsigned long const checksum_in  = sum(included_file);
521                 unsigned long const checksum_out = sum(writefile);
522
523                 if (checksum_in != checksum_out) {
524                         if (!copy(included_file, writefile)) {
525                                 // FIXME UNICODE
526                                 LYXERR(Debug::LATEX)
527                                         << to_utf8(bformat(_("Could not copy the file\n%1$s\n"
528                                                                   "into the temporary directory."),
529                                                    from_utf8(included_file.absFilename())))
530                                         << endl;
531                                 return 0;
532                         }
533                 }
534         }
535
536         string const tex_format = (runparams.flavor == OutputParams::LATEX) ?
537                         "latex" : "pdflatex";
538         if (isVerbatim(params_)) {
539                 incfile = latex_path(incfile);
540                 // FIXME UNICODE
541                 os << '\\' << from_ascii(params_.getCmdName()) << '{'
542                    << from_utf8(incfile) << '}';
543         } else if (type(params_) == INPUT) {
544                 runparams.exportdata->addExternalFile(tex_format, writefile,
545                                                       exportfile);
546
547                 // \input wants file with extension (default is .tex)
548                 if (!isLyXFilename(included_file.absFilename())) {
549                         incfile = latex_path(incfile);
550                         // FIXME UNICODE
551                         os << '\\' << from_ascii(params_.getCmdName())
552                            << '{' << from_utf8(incfile) << '}';
553                 } else {
554                 incfile = changeExtension(incfile, ".tex");
555                 incfile = latex_path(incfile);
556                         // FIXME UNICODE
557                         os << '\\' << from_ascii(params_.getCmdName())
558                            << '{' << from_utf8(incfile) <<  '}';
559                 }
560         } else if (type(params_) == LISTINGS) {
561                 os << '\\' << from_ascii(params_.getCmdName());
562                 string opt = params_.getOptions();
563                 // opt is set in QInclude dialog and should have passed validation.
564                 InsetListingsParams params(opt);
565                 if (!params.params().empty())
566                         os << "[" << from_utf8(params.params()) << "]";
567                 os << '{'  << from_utf8(incfile) << '}';
568         } else {
569                 runparams.exportdata->addExternalFile(tex_format, writefile,
570                                                       exportfile);
571
572                 // \include don't want extension and demands that the
573                 // file really have .tex
574                 incfile = changeExtension(incfile, string());
575                 incfile = latex_path(incfile);
576                 // FIXME UNICODE
577                 os << '\\' << from_ascii(params_.getCmdName()) << '{'
578                    << from_utf8(incfile) << '}';
579         }
580
581         return 0;
582 }
583
584
585 int InsetInclude::plaintext(Buffer const & buffer, odocstream & os,
586                             OutputParams const &) const
587 {
588         if (isVerbatim(params_) || isListings(params_)) {
589                 os << '[' << getScreenLabel(buffer) << '\n';
590                 // FIXME: We don't know the encoding of the file
591                 docstring const str =
592                      from_utf8(getFileContents(includedFilename(buffer, params_)));
593                 os << str;
594                 os << "\n]";
595                 return PLAINTEXT_NEWLINE + 1; // one char on a separate line
596         } else {
597                 docstring const str = '[' + getScreenLabel(buffer) + ']';
598                 os << str;
599                 return str.size();
600         }
601 }
602
603
604 int InsetInclude::docbook(Buffer const & buffer, odocstream & os,
605                           OutputParams const & runparams) const
606 {
607         string incfile = to_utf8(params_["filename"]);
608
609         // Do nothing if no file name has been specified
610         if (incfile.empty())
611                 return 0;
612
613         string const included_file = includedFilename(buffer, params_).absFilename();
614
615         //Check we're not trying to include ourselves.
616         //FIXME RECURSIVE INCLUDE
617         //This isn't sufficient, as the inclusion could be downstream.
618         //But it'll have to do for now.
619         if (buffer.fileName() == included_file) {
620                 Alert::error(_("Recursive input"),
621                                bformat(_("Attempted to include file %1$s in itself! "
622                                "Ignoring inclusion."), from_utf8(incfile)));
623                 return 0;
624         }
625
626         // write it to a file (so far the complete file)
627         string const exportfile = changeExtension(incfile, ".sgml");
628         DocFileName writefile(changeExtension(included_file, ".sgml"));
629
630         if (loadIfNeeded(buffer, params_)) {
631                 Buffer * tmp = theBufferList().getBuffer(included_file);
632
633                 string const mangled = writefile.mangledFilename();
634                 writefile = makeAbsPath(mangled,
635                                         buffer.getMasterBuffer()->temppath());
636                 if (!runparams.nice)
637                         incfile = mangled;
638
639                 LYXERR(Debug::LATEX) << "incfile:" << incfile << endl;
640                 LYXERR(Debug::LATEX) << "exportfile:" << exportfile << endl;
641                 LYXERR(Debug::LATEX) << "writefile:" << writefile << endl;
642
643                 tmp->makeDocBookFile(writefile, runparams, true);
644         }
645
646         runparams.exportdata->addExternalFile("docbook", writefile,
647                                               exportfile);
648         runparams.exportdata->addExternalFile("docbook-xml", writefile,
649                                               exportfile);
650
651         if (isVerbatim(params_) || isListings(params_)) {
652                 os << "<inlinegraphic fileref=\""
653                    << '&' << include_label << ';'
654                    << "\" format=\"linespecific\">";
655         } else
656                 os << '&' << include_label << ';';
657
658         return 0;
659 }
660
661
662 void InsetInclude::validate(LaTeXFeatures & features) const
663 {
664         string incfile(to_utf8(params_["filename"]));
665         string writefile;
666
667         Buffer const & buffer = features.buffer();
668
669         string const included_file = includedFilename(buffer, params_).absFilename();
670
671         if (isLyXFilename(included_file))
672                 writefile = changeExtension(included_file, ".sgml");
673         else
674                 writefile = included_file;
675
676         if (!features.runparams().nice && !isVerbatim(params_) && !isListings(params_)) {
677                 incfile = DocFileName(writefile).mangledFilename();
678                 writefile = makeAbsPath(incfile,
679                                         buffer.getMasterBuffer()->temppath()).absFilename();
680         }
681
682         features.includeFile(include_label, writefile);
683
684         if (isVerbatim(params_))
685                 features.require("verbatim");
686         else if (isListings(params_))
687                 features.require("listings");
688
689         // Here we must do the fun stuff...
690         // Load the file in the include if it needs
691         // to be loaded:
692         if (loadIfNeeded(buffer, params_)) {
693                 // a file got loaded
694                 Buffer * const tmp = theBufferList().getBuffer(included_file);
695                 // make sure the buffer isn't us
696                 // FIXME RECURSIVE INCLUDES
697                 // This is not sufficient, as recursive includes could be
698                 // more than a file away. But it will do for now.
699                 if (tmp && tmp != & buffer) {
700                         // We must temporarily change features.buffer,
701                         // otherwise it would always be the master buffer,
702                         // and nested includes would not work.
703                         features.setBuffer(*tmp);
704                         tmp->validate(features);
705                         features.setBuffer(buffer);
706                 }
707         }
708 }
709
710
711 void InsetInclude::getLabelList(Buffer const & buffer,
712                                 std::vector<docstring> & list) const
713 {
714         if (isListings(params_)) {
715                 InsetListingsParams params(params_.getOptions());
716                 string label = params.getParamValue("label");
717                 if (!label.empty())
718                         list.push_back(from_utf8(label));
719         }
720         else if (loadIfNeeded(buffer, params_)) {
721                 string const included_file = includedFilename(buffer, params_).absFilename();
722                 Buffer * tmp = theBufferList().getBuffer(included_file);
723                 tmp->setParentName("");
724                 tmp->getLabelList(list);
725                 tmp->setParentName(parentFilename(buffer));
726         }
727 }
728
729
730 void InsetInclude::fillWithBibKeys(Buffer const & buffer,
731                 std::vector<std::pair<string, docstring> > & keys) const
732 {
733         if (loadIfNeeded(buffer, params_)) {
734                 string const included_file = includedFilename(buffer, params_).absFilename();
735                 Buffer * tmp = theBufferList().getBuffer(included_file);
736                 tmp->setParentName("");
737                 tmp->fillWithBibKeys(keys);
738                 tmp->setParentName(parentFilename(buffer));
739         }
740 }
741
742
743 void InsetInclude::updateBibfilesCache(Buffer const & buffer)
744 {
745         Buffer * const tmp = getChildBuffer(buffer, params_);
746         if (tmp) {
747                 tmp->setParentName("");
748                 tmp->updateBibfilesCache();
749                 tmp->setParentName(parentFilename(buffer));
750         }
751 }
752
753
754 std::vector<FileName> const &
755 InsetInclude::getBibfilesCache(Buffer const & buffer) const
756 {
757         Buffer * const tmp = getChildBuffer(buffer, params_);
758         if (tmp) {
759                 tmp->setParentName("");
760                 std::vector<FileName> const & cache = tmp->getBibfilesCache();
761                 tmp->setParentName(parentFilename(buffer));
762                 return cache;
763         }
764         static std::vector<FileName> const empty;
765         return empty;
766 }
767
768
769 bool InsetInclude::metrics(MetricsInfo & mi, Dimension & dim) const
770 {
771         BOOST_ASSERT(mi.base.bv && mi.base.bv->buffer());
772
773         bool use_preview = false;
774         if (RenderPreview::status() != LyXRC::PREVIEW_OFF) {
775                 graphics::PreviewImage const * pimage =
776                         preview_->getPreviewImage(*mi.base.bv->buffer());
777                 use_preview = pimage && pimage->image();
778         }
779
780         if (use_preview) {
781                 preview_->metrics(mi, dim);
782         } else {
783                 if (!set_label_) {
784                         set_label_ = true;
785                         button_.update(getScreenLabel(*mi.base.bv->buffer()),
786                                        true);
787                 }
788                 button_.metrics(mi, dim);
789         }
790
791         Box b(0, dim.wid, -dim.asc, dim.des);
792         button_.setBox(b);
793
794         bool const changed = dim_ != dim;
795         dim_ = dim;
796         return changed;
797 }
798
799
800 void InsetInclude::draw(PainterInfo & pi, int x, int y) const
801 {
802         setPosCache(pi, x, y);
803
804         BOOST_ASSERT(pi.base.bv && pi.base.bv->buffer());
805
806         bool use_preview = false;
807         if (RenderPreview::status() != LyXRC::PREVIEW_OFF) {
808                 graphics::PreviewImage const * pimage =
809                         preview_->getPreviewImage(*pi.base.bv->buffer());
810                 use_preview = pimage && pimage->image();
811         }
812
813         if (use_preview)
814                 preview_->draw(pi, x, y);
815         else
816                 button_.draw(pi, x, y);
817 }
818
819
820 Inset::DisplayType InsetInclude::display() const
821 {
822         return type(params_) == INPUT ? Inline : AlignCenter;
823 }
824
825
826
827 //
828 // preview stuff
829 //
830
831 void InsetInclude::fileChanged() const
832 {
833         Buffer const * const buffer_ptr = LyX::cref().updateInset(this);
834         if (!buffer_ptr)
835                 return;
836
837         Buffer const & buffer = *buffer_ptr;
838         preview_->removePreview(buffer);
839         add_preview(*preview_.get(), *this, buffer);
840         preview_->startLoading(buffer);
841 }
842
843
844 namespace {
845
846 bool preview_wanted(InsetCommandParams const & params, Buffer const & buffer)
847 {
848         FileName const included_file = includedFilename(buffer, params);
849
850         return type(params) == INPUT && params.preview() &&
851                 isFileReadable(included_file);
852 }
853
854
855 docstring const latex_string(InsetInclude const & inset, Buffer const & buffer)
856 {
857         odocstringstream os;
858         // We don't need to set runparams.encoding since this will be done
859         // by latex() anyway.
860         OutputParams runparams(0);
861         runparams.flavor = OutputParams::LATEX;
862         inset.latex(buffer, os, runparams);
863
864         return os.str();
865 }
866
867
868 void add_preview(RenderMonitoredPreview & renderer, InsetInclude const & inset,
869                  Buffer const & buffer)
870 {
871         InsetCommandParams const & params = inset.params();
872         if (RenderPreview::status() != LyXRC::PREVIEW_OFF &&
873             preview_wanted(params, buffer)) {
874                 renderer.setAbsFile(includedFilename(buffer, params));
875                 docstring const snippet = latex_string(inset, buffer);
876                 renderer.addPreview(snippet, buffer);
877         }
878 }
879
880 } // namespace anon
881
882
883 void InsetInclude::addPreview(graphics::PreviewLoader & ploader) const
884 {
885         Buffer const & buffer = ploader.buffer();
886         if (preview_wanted(params(), buffer)) {
887                 preview_->setAbsFile(includedFilename(buffer, params()));
888                 docstring const snippet = latex_string(*this, buffer);
889                 preview_->addPreview(snippet, ploader);
890         }
891 }
892
893
894 void InsetInclude::addToToc(TocList & toclist, Buffer const & buffer, ParConstIterator const & pit) const
895 {
896         if (isListings(params_)) {
897                 InsetListingsParams params(params_.getOptions());
898                 string caption = params.getParamValue("caption");
899                 if (!caption.empty()) {
900                         Toc & toc = toclist["listing"];
901                         docstring const str = convert<docstring>(toc.size() + 1)
902                                 + ". " +  from_utf8(caption);
903                         // This inset does not have a valid ParConstIterator 
904                         // so it has to use the iterator of its parent paragraph
905                         toc.push_back(TocItem(pit, 0, str));
906                 }
907                 return;
908         }
909         Buffer const * const childbuffer = getChildBuffer(buffer, params_);
910         if (!childbuffer)
911                 return;
912
913         TocList const & childtoclist = childbuffer->tocBackend().tocs();
914         TocList::const_iterator it = childtoclist.begin();
915         TocList::const_iterator const end = childtoclist.end();
916         for(; it != end; ++it)
917                 toclist[it->first].insert(toclist[it->first].end(),
918                                 it->second.begin(), it->second.end());
919 }
920
921
922 void InsetInclude::updateLabels(Buffer const & buffer, 
923                                 ParIterator const &) const
924 {
925         Buffer const * const childbuffer = getChildBuffer(buffer, params_);
926         if (childbuffer)
927                 lyx::updateLabels(*childbuffer, true);
928         else if (isListings(params_)) {
929                 InsetListingsParams const par = params_.getOptions();
930                 if (par.getParamValue("caption").empty())
931                         listings_label_.clear();
932                 else {
933                         Counters & counters = buffer.params().getTextClass().counters();
934                         docstring const cnt = from_ascii("listing");
935                         if (counters.hasCounter(cnt)) {
936                                 counters.step(cnt);
937                                 listings_label_ = buffer.B_("Program Listing ") + convert<docstring>(counters.value(cnt));
938                         } else
939                                 listings_label_ = buffer.B_("Program Listing");
940                 }
941         }
942 }
943
944
945 string const InsetIncludeMailer::name_("include");
946
947 InsetIncludeMailer::InsetIncludeMailer(InsetInclude & inset)
948         : inset_(inset)
949 {}
950
951
952 string const InsetIncludeMailer::inset2string(Buffer const &) const
953 {
954         return params2string(inset_.params());
955 }
956
957
958 void InsetIncludeMailer::string2params(string const & in,
959                                        InsetCommandParams & params)
960 {
961         params.clear();
962         if (in.empty())
963                 return;
964
965         istringstream data(in);
966         Lexer lex(0,0);
967         lex.setStream(data);
968
969         string name;
970         lex >> name;
971         if (!lex || name != name_)
972                 return print_mailer_error("InsetIncludeMailer", in, 1, name_);
973
974         // This is part of the inset proper that is usually swallowed
975         // by Text::readInset
976         string id;
977         lex >> id;
978         if (!lex || id != "Include")
979                 return print_mailer_error("InsetIncludeMailer", in, 2, "Include");
980
981         InsetInclude inset(params);
982         inset.read(lex);
983         params = inset.params();
984 }
985
986
987 string const
988 InsetIncludeMailer::params2string(InsetCommandParams const & params)
989 {
990         InsetInclude inset(params);
991         ostringstream data;
992         data << name_ << ' ';
993         inset.write(data);
994         data << "\\end_inset\n";
995         return data.str();
996 }
997
998
999 } // namespace lyx