Fix bug #7499. The problem here is that there was no way for the

inset to know that the BibTeX data had changed. So we introduce a
Buffer-wide variable that we can query for that information.

git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@38619 a592a061-630c-0410-9148-cb99ea01b6c8

src/Buffer.cpp

@@ -257,6 +257,10 @@ public:
 	mutable bool bibfile_cache_valid_;
 	/// Cache of timestamps of .bib files
 	map<FileName, time_t> bibfile_status_;
+	/// Indicates whether the bibinfo has changed since the last time
+	/// we ran updateBuffer(), i.e., whether citation labels may need
+	/// to be updated.
+	mutable bool cite_labels_valid_;
 
 	mutable RefCache ref_cache_;
 
@@ -329,8 +333,8 @@ Buffer::Impl::Impl(Buffer * owner, FileName const & file, bool readonly_,
 	  read_only(readonly_), filename(file), file_fully_loaded(false),
 	  toc_backend(owner), macro_lock(false), timestamp_(0),
 	  checksum_(0), wa_(0), gui_(0), undo_(*owner), bibinfo_cache_valid_(false),
-		bibfile_cache_valid_(false), cloned_buffer_(cloned_buffer), 
-		doing_export(false), parent_buffer(0)
+	  bibfile_cache_valid_(false), cite_labels_valid_(false),
+	  cloned_buffer_(cloned_buffer), doing_export(false), parent_buffer(0)
 {
 	if (!cloned_buffer_) {
 		temppath = createBufferTmpDir();
@@ -347,6 +351,7 @@ Buffer::Impl::Impl(Buffer * owner, FileName const & file, bool readonly_,
 	bibinfo_cache_valid_ = cloned_buffer_->d->bibinfo_cache_valid_;
 	bibfile_cache_valid_ = cloned_buffer_->d->bibfile_cache_valid_;
 	bibfile_status_ = cloned_buffer_->d->bibfile_status_;
+	cite_labels_valid_ = cloned_buffer_->d->cite_labels_valid_;
 }
 
 
@@ -1771,12 +1776,14 @@ void Buffer::updateBibfilesCache(UpdateScope scope) const
 	}
 	d->bibfile_cache_valid_ = true;
 	d->bibinfo_cache_valid_ = false;
+	d->cite_labels_valid_ = false;
 }
 
 
 void Buffer::invalidateBibinfoCache() const
 {
 	d->bibinfo_cache_valid_ = false;
+	d->cite_labels_valid_ = false;
 	// also invalidate the cache for the parent buffer
 	Buffer const * const pbuf = d->parent();
 	if (pbuf)
@@ -1788,6 +1795,7 @@ void Buffer::invalidateBibfileCache() const
 {
 	d->bibfile_cache_valid_ = false;
 	d->bibinfo_cache_valid_ = false;
+	d->cite_labels_valid_ = false;
 	// also invalidate the cache for the parent buffer
 	Buffer const * const pbuf = d->parent();
 	if (pbuf)
@@ -1837,6 +1845,7 @@ void Buffer::checkIfBibInfoCacheIsValid() const
 		time_t prevw = d->bibfile_status_[*ei];
 		if (lastw != prevw) {
 			d->bibinfo_cache_valid_ = false;
+			d->cite_labels_valid_ = false;
 			d->bibfile_status_[*ei] = lastw;
 		}
 	}
@@ -1887,6 +1896,12 @@ void Buffer::addBibTeXInfo(docstring const & key, BibTeXInfo const & bi) const
 }
 
 
+bool Buffer::citeLabelsValid() const
+{
+	return masterBuffer()->d->cite_labels_valid_;
+}
+
+
 bool Buffer::isDepClean(string const & name) const
 {
 	DepClean::const_iterator const it = d->dep_clean.find(name);
@@ -4015,6 +4030,7 @@ void Buffer::updateBuffer(UpdateScope scope, UpdateType utype) const
 		return;
 
 	d->bibinfo_cache_valid_ = true;
+	d->cite_labels_valid_ = true;
 	cbuf.tocBackend().update();
 	if (scope == UpdateMaster)
 		cbuf.structureChanged();

src/Buffer.h

@@ -461,6 +461,8 @@ public:
 	/// add a single piece of bibliography info to our cache
 	void addBibTeXInfo(docstring const & key, BibTeXInfo const & bi) const;
 	///
+	bool citeLabelsValid() const;
+	///
 	void getLabelList(std::vector<docstring> &) const;
 
 	///

src/insets/InsetCitation.cpp

@@ -19,6 +19,8 @@
 #include "BufferParams.h"
 #include "BufferView.h"
 #include "DispatchResult.h"
+#include "FuncCode.h"
+#include "FuncRequest.h"
 #include "LaTeXFeatures.h"
 #include "output_xhtml.h"
 #include "ParIterator.h"
@@ -99,6 +101,14 @@ bool InsetCitation::isCompatibleCommand(string const & cmd)
 }
 
 
+void InsetCitation::doDispatch(Cursor & cur, FuncRequest & cmd)
+{
+	if (cmd.action() == LFUN_INSET_MODIFY)
+		cache.recalculate = true;
+	InsetCommand::doDispatch(cur, cmd);
+}
+
+
 docstring InsetCitation::toolTip(BufferView const & bv, int, int) const
 {
 	Buffer const & buf = bv.buffer();
@@ -459,11 +469,10 @@ docstring InsetCitation::screenLabel() const
 
 void InsetCitation::updateBuffer(ParIterator const &, UpdateType)
 {
-	CiteEngine const engine = buffer().params().citeEngine();
-	if (cache.params == params() && cache.engine == engine)
+	if (!cache.recalculate && buffer().citeLabelsValid())
 		return;
 
-	// The label has changed, so we have to re-create it.
+	// The label may have changed, so we have to re-create it.
 	docstring const glabel = generateLabel();
 
 	unsigned int const maxLabelChars = 45;
@@ -474,8 +483,7 @@ void InsetCitation::updateBuffer(ParIterator const &, UpdateType)
 		label += "...";
 	}
 
-	cache.engine  = engine;
-	cache.params = params();
+	cache.recalculate = false;
 	cache.generated_label = glabel;
 	cache.screen_label = label;
 }

src/insets/InsetCitation.h

@@ -41,6 +41,8 @@ public:
 	///
 	docstring toolTip(BufferView const & bv, int x, int y) const;
 	///
+	void doDispatch(Cursor & cur, FuncRequest & cmd);
+	///
 	InsetCode lyxCode() const { return CITE_CODE; }
 	///
 	void latex(otexstream &, OutputParams const &) const;
@@ -102,14 +104,10 @@ private:
 	static ParamInfo param_info_;
 
 	///
-	class Cache {
-	public:
+	struct Cache {
+		Cache() : recalculate(true) {};
 		///
-		Cache() : engine(ENGINE_BASIC), params(CITE_CODE) {}
-		///
-		CiteEngine engine;
-		///
-		InsetCommandParams params;
+		bool recalculate;
 		///
 		docstring generated_label;
 		///