From 0823fb6f86993ed715948d65457234b2899803c3 Mon Sep 17 00:00:00 2001
From: Abdelrazak Younes <younes@lyx.org>
Date: Mon, 16 Oct 2006 08:51:55 +0000
Subject: [PATCH] Fix Toc dialog crash when TOC is empty.

* QToc::update(): return early if no TOC type.

* QTocDialog::updateGui(): return early of the Type model is empty and disable the outline buttons.



git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@15346 a592a061-630c-0410-9148-cb99ea01b6c8
---
 src/frontends/qt4/QToc.C       |  6 ++++++
 src/frontends/qt4/QTocDialog.C | 13 +++++++++++--
 2 files changed, 17 insertions(+), 2 deletions(-)

diff --git a/src/frontends/qt4/QToc.C b/src/frontends/qt4/QToc.C
index 57965fb538..a85e961741 100644
--- a/src/frontends/qt4/QToc.C
+++ b/src/frontends/qt4/QToc.C
@@ -43,6 +43,9 @@ bool QToc::canOutline()
 {
 	vector<string> const & types = getTypes();
 
+	if (types.empty())
+		return false;
+
 	BOOST_ASSERT(type_ >= 0 && type_ < int(types.size()));
 	return ControlToc::canOutline(types[type_]);
 }
@@ -115,6 +118,9 @@ void QToc::update()
 	type_ = 0;
 
 	vector<string> const & types = getTypes();
+	if (types.empty())
+		return;
+
 	string const & selected_type = toc::getType(params().getCmdName());
 	lyxerr[Debug::GUI] << "selected_type " << selected_type	<< endl;
 
diff --git a/src/frontends/qt4/QTocDialog.C b/src/frontends/qt4/QTocDialog.C
index 691aa56641..34556d9673 100644
--- a/src/frontends/qt4/QTocDialog.C
+++ b/src/frontends/qt4/QTocDialog.C
@@ -186,8 +186,17 @@ void QTocDialog::update()
 
 void QTocDialog::updateGui()
 {
-	typeCO->setModel(form_->typeModel());
-	tocTV->setModel(form_->tocModel());
+	QStringListModel * type_model = form_->typeModel();
+	if (type_model->stringList().isEmpty())
+	{
+		enableButtons();
+		return;
+	}
+
+	typeCO->setModel(type_model);
+
+	if (form_->tocModel())
+		tocTV->setModel(form_->tocModel());
 	tocTV->showColumn(0);
 	// hide the pointless QHeader for now
 	// in the future, new columns may appear
-- 
2.39.2