]> git.lyx.org Git - features.git/blobdiff - src/insets/InsetFloat.cpp
Completion: handle undo in insets' insertCompletion methods
[features.git] / src / insets / InsetFloat.cpp
index c1dc9856a92abf2f16627f6974e31b6d76fd0b39..0c9f3d48c57617442af3d266ce841ea147e213f7 100644 (file)
  */
 
 #include <config.h>
-#include <xml.h>
 
 #include "InsetFloat.h"
+
+#include "InsetBox.h"
 #include "InsetCaption.h"
+#include "InsetGraphics.h"
+#include "InsetLabel.h"
 
 #include "Buffer.h"
 #include "BufferParams.h"
@@ -28,6 +31,8 @@
 #include "FuncStatus.h"
 #include "LaTeXFeatures.h"
 #include "Lexer.h"
+#include "xml.h"
+#include "output_docbook.h"
 #include "output_xhtml.h"
 #include "ParIterator.h"
 #include "TexRow.h"
@@ -158,6 +163,11 @@ void InsetFloat::doDispatch(Cursor & cur, FuncRequest & cmd)
        switch (cmd.action()) {
 
        case LFUN_INSET_MODIFY: {
+               if (!buffer().params().documentClass().floats().typeExist(cmd.getArg(0))) {
+                       // not for us: pass further.
+                       cur.undispatched();
+                       break;
+               }
                InsetFloatParams params;
                string2params(to_utf8(cmd.argument()), params);
                cur.recordUndoInset(this);
@@ -196,6 +206,9 @@ bool InsetFloat::getStatus(Cursor & cur, FuncRequest const & cmd,
        switch (cmd.action()) {
 
        case LFUN_INSET_MODIFY:
+               if (!buffer().params().documentClass().floats().typeExist(cmd.getArg(0)))
+                       return Inset::getStatus(cur, cmd, flag);
+       // fall through
        case LFUN_INSET_DIALOG_UPDATE:
                flag.setEnabled(true);
                return true;
@@ -243,6 +256,12 @@ string InsetFloat::getAlignment() const
 }
 
 
+CtObject InsetFloat::getCtObject(OutputParams const &) const
+{
+       return CtObject::OmitObject;
+}
+
+
 LyXAlignment InsetFloat::contentAlignment() const
 {
        LyXAlignment align = LYX_ALIGN_NONE;
@@ -379,11 +398,11 @@ void InsetFloat::latex(otexstream & os, OutputParams const & runparams_in) const
 
                OutputParams rp = runparams_in;
                rp.moving_arg = true;
+               rp.inFloat = OutputParams::SUBFLOAT;
                os << getCaption(rp);
                os << '{';
                // The main argument is the contents of the float. This is not a moving argument.
                rp.moving_arg = false;
-               rp.inFloat = OutputParams::SUBFLOAT;
                InsetText::latex(os, rp);
                os << "}";
 
@@ -444,8 +463,8 @@ void InsetFloat::latex(otexstream & os, OutputParams const & runparams_in) const
 
        if (runparams.inDeletedInset) {
                // This has to be done manually since we need it inside the float
-               OutputParams::CtObject ctobject = runparams.ctObject;
-               runparams.ctObject = OutputParams::CT_DISPLAYOBJECT;
+               CtObject ctobject = runparams.ctObject;
+               runparams.ctObject = CtObject::DisplayObject;
                Changes::latexMarkChange(os, buffer().params(), Change(Change::UNCHANGED),
                                         Change(Change::DELETED), runparams);
                runparams.ctObject = ctobject;
@@ -480,15 +499,368 @@ int InsetFloat::plaintext(odocstringstream & os, OutputParams const & runparams,
 }
 
 
-int InsetFloat::docbook(odocstream & os, OutputParams const & runparams) const
+std::vector<const InsetCollapsible *> findSubfiguresInParagraph(const Paragraph &par)
+{
+
+       // Don't make the hypothesis that all subfigures are in the same paragraph.
+       // Similarly, there may be several subfigures in the same paragraph (most likely case, based on the documentation).
+       // Any box is considered as a subfigure, even though the most likely case is \minipage.
+       // Boxes are not required to make subfigures. The common root between InsetBox and InsetFLoat is InsetCollapsible.
+       std::vector<const InsetCollapsible *> subfigures;
+       for (pos_type pos = 0; pos < par.size(); ++pos) {
+               const Inset *inset = par.getInset(pos);
+               if (!inset)
+                       continue;
+               if (const auto box = dynamic_cast<const InsetBox *>(inset))
+                       subfigures.push_back(box);
+               else if (const auto fl = dynamic_cast<const InsetFloat *>(inset))
+                       subfigures.push_back(fl);
+       }
+       return subfigures;
+}
+
+
+/// Takes an unstructured subfigure container (typically, an InsetBox) and find the elements within:
+/// actual content (image or table), maybe a caption, maybe a label.
+std::tuple<InsetCode, const Inset *, const InsetCaption *, const InsetLabel *> docbookParseHopelessSubfigure(const InsetText * subfigure)
+{
+       InsetCode type = NO_CODE;
+       const Inset * content = nullptr;
+       const InsetCaption * caption = nullptr;
+       const InsetLabel * label = nullptr;
+
+       for (const auto & it : subfigure->paragraphs()) {
+               for (pos_type posIn = 0; posIn < it.size(); ++posIn) {
+                       const Inset * inset = it.getInset(posIn);
+                       if (inset) {
+                               switch (inset->lyxCode()) {
+                                       case GRAPHICS_CODE:
+                                       case TABULAR_CODE:
+                                               if (!content) {
+                                                       content = inset;
+                                                       type = inset->lyxCode();
+                                               }
+                                               break;
+                                       case CAPTION_CODE:
+                                               if (!caption) {
+                                                       caption = dynamic_cast<const InsetCaption *>(inset);
+
+                                                       // A label often hides in a caption. Make a simplified version of the main loop.
+                                                       if (!label) {
+                                                               for (const auto &cit : caption->paragraphs()) {
+                                                                       for (pos_type cposIn = 0; cposIn < cit.size(); ++cposIn) {
+                                                                               const Inset *cinset = cit.getInset(posIn);
+                                                                               if (cinset && cinset->lyxCode() == LABEL_CODE) {
+                                                                                       label = dynamic_cast<const InsetLabel *>(cinset);
+                                                                                       break;
+                                                                               }
+                                                                       }
+
+                                                                       if (label)
+                                                                               break;
+                                                               }
+                                                       }
+                                               }
+                                               break;
+                                       case LABEL_CODE:
+                                               if (!label)
+                                                       label = dynamic_cast<const InsetLabel *>(inset);
+                                               break;
+                                       default:
+                                               break;
+                               }
+                       }
+               }
+
+               if (content && caption && label)
+                       break;
+       }
+
+       return std::make_tuple(type, content, caption, label);
+}
+
+
+void docbookSubfigures(XMLStream & xs, OutputParams const & runparams, const InsetCaption * caption,
+                                          const InsetLabel * label, std::vector<const InsetCollapsible *> const & subfigures)
+{
+       // Ensure there is no label output, it is supposed to be handled as xml:id.
+       OutputParams rpNoLabel = runparams;
+       if (label)
+               rpNoLabel.docbook_anchors_to_ignore.emplace(label->screenLabel());
+
+       // First, open the formal group.
+       docstring attr = docstring();
+       if (label)
+               attr += "xml:id=\"" + xml::cleanID(label->screenLabel()) + "\"";
+
+       xs.startDivision(false);
+       xs << xml::StartTag("formalgroup", attr);
+       xs << xml::CR();
+
+       xs << xml::StartTag("title"); // Don't take attr here, the ID should only go in one place, not two.
+       if (caption) {
+               caption->getCaptionAsDocBook(xs, rpNoLabel);
+       } else {
+               xs << "No caption";
+               // No caption has been detected, but this tag is required for the document to be valid DocBook.
+       }
+       xs << xml::EndTag("title");
+       xs << xml::CR();
+
+       // Deal with each subfigure individually. This should also deal with their caption and their label.
+       // This should be a recursive call to InsetFloat.
+       // An item in subfigure should either be an InsetBox containing an InsetFloat, or an InsetBox directly containing
+       // an image or a table, or directly an InsetFloat.
+       for (const InsetCollapsible * subfigure: subfigures) {
+               if (subfigure == nullptr)
+                       continue;
+
+               // The collapsible may already be a float (InsetFloat).
+               if (dynamic_cast<const InsetFloat *>(subfigure)) {
+                       subfigure->docbook(xs, runparams);
+                       continue;
+               }
+
+               // Subfigures are in boxes, then in InsetFloat.
+               {
+                       bool foundInsetFloat = false;
+                       for (const auto &it : subfigure->paragraphs()) {
+                               for (pos_type posIn = 0; posIn < it.size(); ++posIn) {
+                                       const Inset *inset = it.getInset(posIn);
+                                       if (inset && inset->lyxCode() == FLOAT_CODE) {
+                                               foundInsetFloat = true;
+                                               inset->docbook(xs, runparams);
+                                               break;
+                                       }
+                               }
+
+                               if (foundInsetFloat)
+                                       break;
+                       }
+                       if (foundInsetFloat)
+                               continue;
+               }
+
+               // Subfigures are in boxes, then directly an image or a table. In that case, generate the whole content of the
+               // InsetBox, but not the box container.
+               // Impose some model on the subfigure: at most a caption, at most a label, exactly one figure or one table.
+               {
+                       InsetCode stype = NO_CODE;
+                       const Inset * scontent = nullptr;
+                       const InsetCaption * scaption = nullptr;
+                       const InsetLabel * slabel = nullptr;
+
+                       std::tie(stype, scontent, scaption, slabel) = docbookParseHopelessSubfigure(subfigure);
+
+                       // If there is something, generate it. This is very much like docbookNoSubfigures, but many things
+                       // must be coded differently because there is no float.
+                       // TODO: some code is identical to Floating, like Floating::docbookTag or Floating::docbookCaption. How to reuse that code?
+                       if (scontent) {
+                               // Floating::docbookCaption()
+                               string docbook_caption = "caption"; // This is already correct for tables.
+                               if (stype == GRAPHICS_CODE)
+                                       docbook_caption = "title";
+
+                               // Floating::docbookTag() with hasTitle = true, as we are in formalgroup.
+                               string stag = "float";
+                               if (stype == GRAPHICS_CODE)
+                                       stag = "figure";
+                               else if (stype == TABULAR_CODE)
+                                       stag = "table";
+
+                               // Ensure there is no label output, it is supposed to be handled as xml:id.
+                               if (slabel)
+                                       rpNoLabel.docbook_anchors_to_ignore.emplace(slabel->screenLabel());
+
+                               // Ensure the float does not output its caption, as it is handled here (DocBook mandates a specific place for
+                               // captions, they cannot appear at the end of the float, albeit LyX is happy with that).
+                               OutputParams rpNoTitle = runparams;
+                               rpNoTitle.docbook_in_float = true;
+                               if (stype == TABULAR_CODE)
+                                       rpNoTitle.docbook_in_table = true;
+
+                               // Organisation: <float> <title if any/> <contents without title/> </float>.
+                               docstring sattr = docstring();
+                               if (slabel)
+                                       sattr += "xml:id=\"" + xml::cleanID(slabel->screenLabel()) + "\"";
+                               // No layout way of adding attributes, unlike the normal code path.
+
+                               xs << xml::StartTag(stag, sattr);
+                               xs << xml::CR();
+                               xs << xml::StartTag(docbook_caption);
+                               if (scaption)
+                                       scaption->getCaptionAsDocBook(xs, rpNoLabel);
+                               else // Mandatory in formalgroup.
+                                       xs << "No caption detected";
+                               xs << xml::EndTag(docbook_caption);
+                               xs << xml::CR();
+                               scontent->docbook(xs, rpNoTitle);
+                               xs << xml::EndTag(stag);
+                               xs << xml::CR();
+
+                               // This subfigure could be generated.
+                               continue;
+                       }
+               }
+
+               // If there is no InsetFloat in the inset, output a warning.
+               xs << XMLStream::ESCAPE_NONE << "Error: no float found in the box. "
+                                                       "To use subfigures in DocBook, elements must be wrapped in a float "
+                                   "inset and have a title/caption.";
+               // TODO: could also output a table, that would ensure that the document is correct and *displays* correctly (but without the right semantics), instead of just an error.
+
+               // Recurse to generate as much content as possible (avoid any loss).
+               subfigure->docbook(xs, runparams);
+       }
+
+       // Every subfigure is done: close the formal group.
+       xs << xml::EndTag("formalgroup");
+       xs << xml::CR();
+       xs.endDivision();
+}
+
+
+void docbookGenerateFillerMedia(XMLStream & xs)
+{
+       xs << xml::StartTag("mediaobject");
+       xs << xml::CR();
+       xs << xml::StartTag("textobject");
+       xs << xml::CR();
+       xs << xml::StartTag("phrase");
+       xs << "This figure is empty.";
+       xs << xml::EndTag("phrase");
+       xs << xml::CR();
+       xs << xml::EndTag("textobject");
+       xs << xml::CR();
+       xs << xml::EndTag("mediaobject");
+       xs << xml::CR();
+}
+
+
+void docbookGenerateFillerTable(XMLStream & xs, BufferParams::TableOutput format)
+{
+       switch (format) {
+       case BufferParams::HTMLTable:
+               xs << xml::StartTag("tr");
+               xs << xml::CR();
+               xs << xml::StartTag("td");
+               xs << "This table is empty.";
+               xs << xml::EndTag("td");
+               xs << xml::CR();
+               xs << xml::EndTag("tr");
+               xs << xml::CR();
+               break;
+       case BufferParams::CALSTable:
+               // CALS tables allow for <mediaobject>, use that instead.
+               docbookGenerateFillerMedia(xs);
+               break;
+       }
+}
+
+
+void docbookNoSubfigures(XMLStream & xs, OutputParams const & runparams, const InsetCaption * caption,
+                         const InsetLabel * label, Floating const & ftype, const InsetFloat * thisFloat) {
+       // Ensure there is no label output, it is supposed to be handled as xml:id.
+       OutputParams rpNoLabel = runparams;
+       if (label)
+               rpNoLabel.docbook_anchors_to_ignore.emplace(label->screenLabel());
+
+       // Ensure the float does not output its caption, as it is handled here (DocBook mandates a specific place for
+       // captions, they cannot appear at the end of the float, albeit LyX is happy with that).
+       OutputParams rpNoTitle = runparams;
+       rpNoTitle.docbook_in_float = true;
+       if (ftype.docbookFloatType() == "table")
+               rpNoTitle.docbook_in_table = true;
+
+       // Generate the contents of the float (to check for emptiness).
+       odocstringstream osFloatContent;
+       bool hasFloat = false;
+
+       if (thisFloat) {
+               XMLStream xsFloatContent(osFloatContent);
+               thisFloat->InsetText::docbook(xsFloatContent, rpNoTitle);
+               hasFloat = !osFloatContent.str().empty();
+       }
+
+       // Do the same for the caption.
+       odocstringstream osCaptionContent;
+       bool hasCaption = false;
+
+       if (caption != nullptr) {
+               XMLStream xsCaptionContent(osCaptionContent);
+               caption->getCaptionAsDocBook(xsCaptionContent, rpNoLabel);
+               hasCaption = !osCaptionContent.str().empty();
+       }
+
+       // Organisation: <float with xml:id if any> <title if any/> <contents without title nor xml:id/> </float>.
+       // Titles and xml:id are generated with specific insets and must be dealt with using OutputParams.
+
+       // - Generate the attributes for the float tag.
+       docstring attr = docstring();
+       if (label)
+               attr += "xml:id=\"" + xml::cleanID(label->screenLabel()) + "\"";
+       if (!ftype.docbookAttr().empty()) {
+               if (!attr.empty())
+                       attr += " ";
+               attr += from_utf8(ftype.docbookAttr());
+       }
+
+       // - Open the float tag.
+       xs << xml::StartTag(ftype.docbookTag(hasCaption), attr);
+       xs << xml::CR();
+
+       // - Generate the caption.
+       if (hasCaption) {
+               string const &titleTag = ftype.docbookCaption();
+               xs << xml::StartTag(titleTag);
+               xs << XMLStream::ESCAPE_NONE << osCaptionContent.str();
+               xs << xml::EndTag(titleTag);
+               xs << xml::CR();
+       }
+
+       // - Output the actual content of the float or some dummy content (to ensure that the output
+       // document is valid). Use HTML tables by default, unless an InsetFloat is given.
+       if (hasFloat)
+               xs << XMLStream::ESCAPE_NONE << osFloatContent.str();
+       else if (ftype.docbookFloatType() == "table") {
+               BufferParams::TableOutput tableFormat = BufferParams::HTMLTable;
+               if (thisFloat)
+                       tableFormat = thisFloat->buffer().params().docbook_table_output;
+               docbookGenerateFillerTable(xs, tableFormat);
+       } else
+               docbookGenerateFillerMedia(xs);
+
+       // - Close the float.
+       xs << xml::EndTag(ftype.docbookTag(hasCaption));
+       xs << xml::CR();
+}
+
+
+void InsetFloat::docbook(XMLStream & xs, OutputParams const & runparams) const
 {
-       // FIXME Implement subfloat!
-       // FIXME UNICODE
-       os << '<' << from_ascii(params_.type) << '>';
-       int const i = InsetText::docbook(os, runparams);
-       os << "</" << from_ascii(params_.type) << '>';
+       const InsetCaption* caption = getCaptionInset();
+       const InsetLabel* label = getLabelInset();
+
+       // Determine whether the float has subfigures.
+       std::vector<const InsetCollapsible *> subfigures;
+       auto end = paragraphs().end();
+       for (auto it = paragraphs().begin(); it != end; ++it) {
+               std::vector<const InsetCollapsible *> foundSubfigures = findSubfiguresInParagraph(*it);
+               if (!foundSubfigures.empty()) {
+                       subfigures.reserve(subfigures.size() + foundSubfigures.size());
+                       subfigures.insert(subfigures.end(), foundSubfigures.begin(), foundSubfigures.end());
+               }
+       }
 
-       return i;
+       // Gather a few things from global environment that are shared between all following cases.
+       FloatList const & floats = buffer().params().documentClass().floats();
+       Floating const & ftype = floats.getType(params_.type);
+
+       // Switch on subfigures.
+       if (!subfigures.empty())
+               docbookSubfigures(xs, runparams, caption, label, subfigures);
+       else
+               docbookNoSubfigures(xs, runparams, caption, label, ftype, this);
 }
 
 
@@ -507,12 +879,21 @@ bool InsetFloat::insetAllowed(InsetCode code) const
 }
 
 
+void InsetFloat::updateBuffer(ParIterator const & it, UpdateType utype, bool const deleted)
+{
+       InsetCaptionable::updateBuffer(it, utype, deleted);
+       bool const subflt = (it.innerInsetOfType(FLOAT_CODE)
+                            || it.innerInsetOfType(WRAP_CODE));
+       setSubfloat(subflt);
+}
+
+
 void InsetFloat::setWide(bool w, bool update_label)
 {
        if (!buffer().params().documentClass().floats().allowsWide(params_.type))
                params_.wide = false;
        else
-           params_.wide = w;
+               params_.wide = w;
        if (update_label)
                setNewLabel();
 }
@@ -539,10 +920,10 @@ void InsetFloat::setSubfloat(bool s, bool update_label)
 
 void InsetFloat::setNewLabel()
 {
-       docstring lab = _("float: ");
+       docstring lab = _("Float: ");
 
        if (params_.subfloat)
-               lab = _("subfloat: ");
+               lab = _("Subfloat: ");
 
        lab += floatName(params_.type);