src/insets/InsetLabel.cpp

   1 /**
   2  * \file InsetLabel.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 "InsetLabel.h"
  14
  15 #include "InsetRef.h"
  16
  17 #include "buffer_funcs.h"
  18 #include "Buffer.h"
  19 #include "BufferParams.h"
  20 #include "BufferView.h"
  21 #include "CutAndPaste.h"
  22 #include "DispatchResult.h"
  23 #include "FuncRequest.h"
  24 #include "FuncStatus.h"
  25 #include "InsetIterator.h"
  26 #include "Language.h"
  27 #include "LyX.h"
  28 #include "output_xhtml.h"
  29 #include "ParIterator.h"
  30 #include "sgml.h"
  31 #include "Text.h"
  32 #include "TextClass.h"
  33 #include "TocBackend.h"
  34
  35 #include "mathed/InsetMathHull.h"
  36 #include "mathed/InsetMathRef.h"
  37
  38 #include "frontends/alert.h"
  39
  40 #include "support/convert.h"
  41 #include "support/gettext.h"
  42 #include "support/lstrings.h"
  43 #include "support/lyxalgo.h"
  44
  45 using namespace std;
  46 using namespace lyx::support;
  47
  48 namespace lyx {
  49
  50
  51 InsetLabel::InsetLabel(Buffer * buf, InsetCommandParams const & p)
  52         : InsetCommand(buf, p, "label")
  53 {}
  54
  55
  56 void InsetLabel::initView()
  57 {
  58         updateCommand(getParam("name"));
  59 }
  60
  61
  62 void InsetLabel::updateCommand(docstring const & new_label, bool updaterefs)
  63 {
  64         docstring const old_label = getParam("name");
  65         docstring label = new_label;
  66         int i = 1;
  67         while (buffer().insetLabel(label)) {
  68                 label = new_label + '-' + convert<docstring>(i);
  69                 ++i;
  70         }
  71
  72         if (label != new_label) {
  73                 // Warn the user that the label has been changed to something else.
  74                 frontend::Alert::warning(_("Label names must be unique!"),
  75                         bformat(_("The label %1$s already exists,\n"
  76                         "it will be changed to %2$s."), new_label, label));
  77         }
  78
  79         buffer().undo().beginUndoGroup();
  80         setParam("name", label);
  81
  82         if (updaterefs) {
  83                 Buffer::References & refs = buffer().references(old_label);
  84                 Buffer::References::iterator it = refs.begin();
  85                 Buffer::References::iterator end = refs.end();
  86                 for (; it != end; ++it) {
  87                         buffer().undo().recordUndo(it->second);
  88                         if (it->first->lyxCode() == MATH_REF_CODE) {
  89                                 InsetMathHull * mi =
  90                                         static_cast<InsetMathHull *>(it->first);
  91                                 mi->asRefInset()->changeTarget(label);
  92                         } else {
  93                                 InsetCommand * ref =
  94                                         static_cast<InsetCommand *>(it->first);
  95                                 ref->setParam("reference", label);
  96                         }
  97                 }
  98         }
  99         buffer().undo().endUndoGroup();
 100 }
 101
 102
 103 ParamInfo const & InsetLabel::findInfo(string const & /* cmdName */)
 104 {
 105         static ParamInfo param_info_;
 106         if (param_info_.empty())
 107                 param_info_.add("name", ParamInfo::LATEX_REQUIRED,
 108                                 ParamInfo::HANDLING_ESCAPE);
 109         return param_info_;
 110 }
 111
 112
 113 docstring InsetLabel::screenLabel() const
 114 {
 115         return screen_label_;
 116 }
 117
 118
 119 void InsetLabel::updateBuffer(ParIterator const & par, UpdateType utype)
 120 {
 121         docstring const & label = getParam("name");
 122         if (buffer().insetLabel(label)) {
 123                 // Problem: We already have an InsetLabel with the same name!
 124                 screen_label_ = _("DUPLICATE: ") + label;
 125                 return;
 126         }
 127         buffer().setInsetLabel(label, this);
 128         screen_label_ = label;
 129
 130         if (utype) {
 131                 // save info on the active counter
 132                 Counters const & cnts =
 133                         buffer().masterBuffer()->params().documentClass().counters();
 134                 active_counter_ = cnts.currentCounter();
 135                 Language const * lang = par->getParLanguage(buffer().params());
 136                 if (lang && !active_counter_.empty()) {
 137                         counter_value_ = cnts.theCounter(active_counter_, lang->code());
 138                         pretty_counter_ = cnts.prettyCounter(active_counter_, lang->code());
 139                 } else {
 140                         counter_value_ = from_ascii("??");
 141                         pretty_counter_ = from_ascii("??");
 142                 }
 143         }
 144 }
 145
 146
 147 void InsetLabel::addToToc(DocIterator const & cpit)
 148 {
 149         docstring const & label = getParam("name");
 150         Toc & toc = buffer().tocBackend().toc("label");
 151         if (buffer().insetLabel(label) != this) {
 152                 toc.push_back(TocItem(cpit, 0, screen_label_));
 153                 return;
 154         }
 155         toc.push_back(TocItem(cpit, 0, screen_label_));
 156         Buffer::References const & refs = buffer().references(label);
 157         Buffer::References::const_iterator it = refs.begin();
 158         Buffer::References::const_iterator end = refs.end();
 159         for (; it != end; ++it) {
 160                 DocIterator const ref_pit(it->second);
 161                 if (it->first->lyxCode() == MATH_REF_CODE)
 162                         toc.push_back(TocItem(ref_pit, 1,
 163                                 static_cast<InsetMathHull *>(it->first)->asRefInset()
 164                                         ->screenLabel()));
 165                 else
 166                         toc.push_back(TocItem(ref_pit, 1,
 167                                 static_cast<InsetRef *>(it->first)->screenLabel()));
 168         }
 169 }
 170
 171
 172 bool InsetLabel::getStatus(Cursor & cur, FuncRequest const & cmd,
 173                            FuncStatus & status) const
 174 {
 175         bool enabled;
 176         switch (cmd.action()) {
 177         case LFUN_LABEL_INSERT_AS_REF:
 178         case LFUN_LABEL_COPY_AS_REF:
 179                 enabled = true;
 180                 break;
 181         default:
 182                 return InsetCommand::getStatus(cur, cmd, status);
 183         }
 184
 185         status.setEnabled(enabled);
 186         return true;
 187 }
 188
 189
 190 void InsetLabel::doDispatch(Cursor & cur, FuncRequest & cmd)
 191 {
 192         switch (cmd.action()) {
 193
 194         case LFUN_INSET_MODIFY: {
 195                 InsetCommandParams p(LABEL_CODE);
 196                 // FIXME UNICODE
 197                 InsetCommand::string2params("label", to_utf8(cmd.argument()), p);
 198                 if (p.getCmdName().empty()) {
 199                         cur.noScreenUpdate();
 200                         break;
 201                 }
 202                 if (p["name"] != params()["name"])
 203                         updateCommand(p["name"]);
 204                 cur.forceBufferUpdate();
 205                 break;
 206         }
 207
 208         case LFUN_LABEL_COPY_AS_REF: {
 209                 InsetCommandParams p(REF_CODE, "ref");
 210                 p["reference"] = getParam("name");
 211                 cap::clearSelection();
 212                 cap::copyInset(cur, new InsetRef(buffer_, p), getParam("name"));
 213                 break;
 214         }
 215
 216         case LFUN_LABEL_INSERT_AS_REF: {
 217                 InsetCommandParams p(REF_CODE, "ref");
 218                 p["reference"] = getParam("name");
 219                 string const data = InsetCommand::params2string("ref", p);
 220                 lyx::dispatch(FuncRequest(LFUN_INSET_INSERT, data));
 221                 break;
 222         }
 223
 224         default:
 225                 InsetCommand::doDispatch(cur, cmd);
 226                 break;
 227         }
 228 }
 229
 230
 231 int InsetLabel::plaintext(odocstream & os, OutputParams const &) const
 232 {
 233         docstring const str = getParam("name");
 234         os << '<' << str << '>';
 235         return 2 + str.size();
 236 }
 237
 238
 239 int InsetLabel::docbook(odocstream & os, OutputParams const & runparams) const
 240 {
 241         os << "<!-- anchor id=\""
 242            << sgml::cleanID(buffer(), runparams, getParam("name"))
 243            << "\" -->";
 244         return 0;
 245 }
 246
 247
 248 docstring InsetLabel::xhtml(XHTMLStream & xs, OutputParams const &) const
 249 {
 250         // FIXME XHTML
 251         // Unfortunately, the name attribute has been deprecated, so we have to use
 252         // id here to get the document to validate as XHTML 1.1. This will cause a
 253         // problem with some browsers, though, I'm sure. (Guess which!) So we will
 254         // have to figure out what to do about this later.
 255         string const attr = "id=\"" + html::cleanAttr(to_utf8(getParam("name"))) + "\"";
 256         xs << html::CompTag("a", attr);
 257         return docstring();
 258 }
 259
 260
 261 } // namespace lyx