This patch solves this crash (due to an assertion):

1) Open EmbeddedObject.lyx
2) Open Toc
3) Click on section 7.2.2 which is in the second child document
4) assertion.

This commit adds proper support for multi-part documents. With this each child document has access to the _full_ TOC tree (including LOT and LOF). This enables to switch between master and child document using the TOC.

* buffer_funcs.cpp:
  - updateLabels(): do not emit Buffer::structureChanged() signal for child document
  - checkBufferStructure(): update the structure of the master document.

* ControlToc.cpp: always use the TocBackend of the master document.

* LyXView::connectBuffer(): connect structureChanged() of master document.

* TocBackend:
  - TocItem: get rid of child_ member.
  - TocBackend::item(): only compare items from the same document.


git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@18386 a592a061-630c-0410-9148-cb99ea01b6c8

src/TocBackend.cpp

@@ -37,8 +37,8 @@ using std::string;
 // TocItem implementation
 
 TocItem::TocItem(ParConstIterator const & par_it, int d,
-		docstring const & s, bool child)
-		: par_it_(par_it), depth_(d), str_(s), child_(child)
+		docstring const & s)
+		: par_it_(par_it), depth_(d), str_(s)
 {
 /*
 	if (!uid_.empty())
@@ -170,9 +170,6 @@ void TocBackend::update()
 	BufferParams const & bufparams = buffer_->params();
 	const int min_toclevel = bufparams.getTextClass().min_toclevel();
 
-	// Is this a child document?
-	bool const child_document = buffer_->getMasterBuffer() != buffer_;
-
 	Toc & toc = tocs_["tableofcontents"];
 	ParConstIterator pit = buffer_->par_iterator_begin();
 	ParConstIterator end = buffer_->par_iterator_end();
@@ -212,14 +209,14 @@ void TocBackend::update()
 			if (tocstring.empty())
 				tocstring = pit->asString(*buffer_, true);
 			toc.push_back(TocItem(pit, toclevel - min_toclevel,
-				tocstring, child_document));
+				tocstring));
 		}
 	}
 }
 
 
-TocIterator const TocBackend::item(
-	std::string const & type, ParConstIterator const & par_it) const
+TocIterator const TocBackend::item(std::string const & type,
+		ParConstIterator const & par_it) const
 {
 	TocList::const_iterator toclist_it = tocs_.find(type);
 	// Is the type supported?
@@ -242,7 +239,10 @@ TocIterator const TocBackend::item(
 			par_it_text.backwardPos();
 
 	for (; it != last; --it) {
-		if (it->child_)
+		// We verify that we don't compare contents of two
+		// different document. This happens when you
+		// have parent and child documents.
+		if (&it->par_it_[0].inset() != &par_it_text[0].inset())
 			continue;
 		if (it->par_it_ <= par_it_text)
 			return it;

src/TocBackend.h

@@ -41,8 +41,7 @@ public:
 	///
 	TocItem(ParConstIterator const & par_it = ParConstIterator(),
 		int d = -1,
-		docstring const & s = docstring(),
-		bool child = false
+		docstring const & s = docstring()
 		);
 	///
 	~TocItem() {}
@@ -69,9 +68,6 @@ protected:
 
 	/// Full item string
 	docstring str_;
-
-	/// Set to true if the item comes from a child document.
-	bool child_;
 };
 
 
@@ -110,7 +106,10 @@ public:
 	///
 	Toc const & toc(std::string const & type) const;
 	/// Return the first Toc Item before the cursor
-	TocIterator const item(std::string const & type, ParConstIterator const &) const;
+	TocIterator const item(
+		std::string const & type, ///< Type of Toc.
+		ParConstIterator const & ///< The cursor location in the document.
+		) const;
 
 	void writePlaintextTocList(std::string const & type, odocstream & os) const;
 

src/buffer_funcs.cpp

@@ -698,7 +698,8 @@ void updateLabels(Buffer const & buf, bool childonly)
 
 	Buffer & cbuf = const_cast<Buffer &>(buf);
 	cbuf.tocBackend().update();
-	cbuf.structureChanged();
+	if (!childonly)
+		cbuf.structureChanged();
 }
 
 
@@ -706,8 +707,9 @@ void checkBufferStructure(Buffer & buffer, ParIterator const & par_it)
 {
 	if (par_it->layout()->labeltype == LABEL_COUNTER
 		&& par_it->layout()->toclevel != Layout::NOT_IN_TOC) {
-		buffer.tocBackend().updateItem(par_it);
-		buffer.structureChanged();
+		Buffer * master = buffer.getMasterBuffer();
+		master->tocBackend().updateItem(par_it);
+		master->structureChanged();
 	}
 }
 

src/frontends/LyXView.cpp

@@ -196,7 +196,7 @@ void LyXView::connectBuffer(Buffer & buf)
 			boost::bind(&WorkArea::redraw, work_area_));
 
 	bufferStructureChangedConnection_ =
-		buf.structureChanged.connect(
+		buf.getMasterBuffer()->structureChanged.connect(
 			boost::bind(&LyXView::updateToc, this));
 
 	errorsConnection_ =

src/frontends/controllers/ControlToc.cpp

@@ -42,7 +42,7 @@ ControlToc::ControlToc(Dialog & d)
 
 TocList const & ControlToc::tocs() const
 {
-	return kernel().buffer().tocBackend().tocs();
+	return kernel().buffer().getMasterBuffer()->tocBackend().tocs();
 }
 
 
@@ -53,7 +53,8 @@ bool ControlToc::initialiseParams(string const & data)
 
 	types_.clear();
 	type_names_.clear();
-	TocList const & tocs = kernel().buffer().tocBackend().tocs();
+	TocList const & tocs = kernel().buffer().getMasterBuffer()->
+		tocBackend().tocs();
 	TocList::const_iterator it = tocs.begin();
 	TocList::const_iterator end = tocs.end();
 	for (; it != end; ++it) {
@@ -116,7 +117,7 @@ void ControlToc::outlineOut()
 
 void ControlToc::updateBackend()
 {
-	kernel().buffer().tocBackend().update();
+	kernel().buffer().getMasterBuffer()->tocBackend().update();
 	kernel().buffer().structureChanged();
 }
 
@@ -125,7 +126,8 @@ TocIterator const ControlToc::getCurrentTocItem(size_t type) const
 {
 	BOOST_ASSERT(kernel().bufferview());
 	ParConstIterator it(kernel().bufferview()->cursor());
-	return kernel().buffer().tocBackend().item(types_[type], it);
+	Buffer const * master = kernel().buffer().getMasterBuffer();
+	return master->tocBackend().item(types_[type], it);
 }