Add bibtex inset to outliner if "add to toc" is checked.

Fixes #11309

src/insets/InsetBibtex.cpp

@@ -32,6 +32,7 @@
 #include "PDFOptions.h"
 #include "texstream.h"
 #include "TextClass.h"
+#include "TocBackend.h"
 
 #include "frontends/alert.h"
 
@@ -900,10 +901,31 @@ void InsetBibtex::updateBuffer(ParIterator const &, UpdateType)
 }
 
 
+docstring InsetBibtex::getRefLabel() const
+{
+	if (buffer().masterParams().documentClass().hasLaTeXLayout("chapter"))
+		return buffer().B_("Bibliography");
+	return buffer().B_("References");
+}
+
+
+void InsetBibtex::addToToc(DocIterator const & cpit, bool output_active,
+			   UpdateType, TocBackend & backend) const
+{
+	if (!prefixIs(to_utf8(getParam("options")), "bibtotoc"))
+		return;
+
+	docstring const str = getRefLabel();
+	TocBuilder & b = backend.builder("tableofcontents");
+	b.pushItem(cpit, str, output_active);
+	b.pop();
+}
+
+
 int InsetBibtex::plaintext(odocstringstream & os,
        OutputParams const & op, size_t max_length) const
 {
-	docstring const reflabel = buffer().B_("References");
+	docstring const reflabel = getRefLabel();
 
 	// We could output more information here, e.g., what databases are included
 	// and information about options. But I don't necessarily see any reason to

src/insets/InsetBibtex.h

@@ -57,6 +57,9 @@ public:
 	///
 	void updateBuffer(ParIterator const &, UpdateType);
 	///
+	void addToToc(DocIterator const & di, bool output_active,
+				  UpdateType utype, TocBackend & backend) const;
+	///
 	void collectBibKeys(InsetIterator const &, support::FileNameList &) const;
 	///
 	void validate(LaTeXFeatures &) const;
@@ -84,6 +87,8 @@ private:
 	void parseBibTeXFiles(support::FileNameList &) const;
 	///
 	bool usingBiblatex() const;
+	///
+	docstring getRefLabel() const;
 
 	/// \name Private functions inherited from Inset class
 	//@{