From 7ff1a60d12c123b9b69ea81e9216d4452883b999 Mon Sep 17 00:00:00 2001
From: Richard Heck <rgheck@comcast.net>
Date: Wed, 29 Sep 2010 12:17:24 +0000
Subject: [PATCH] Introduce Buffer::hasChildren() and use it.

git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@35531 a592a061-630c-0410-9148-cb99ea01b6c8
---
 src/Buffer.cpp                    | 6 ++++++
 src/Buffer.h                      | 3 +++
 src/frontends/qt4/GuiDocument.cpp | 5 +----
 3 files changed, 10 insertions(+), 4 deletions(-)

diff --git a/src/Buffer.cpp b/src/Buffer.cpp
index 7123264281..bfcac85256 100644
--- a/src/Buffer.cpp
+++ b/src/Buffer.cpp
@@ -2514,6 +2514,12 @@ DocIterator Buffer::firstChildPosition(Buffer const * child)
 }
 
 
+bool Buffer::hasChildren() const
+{
+	return !d->children_positions.empty();	
+}
+
+
 void Buffer::getChildren(ListOfBuffers & clist, bool grand_children) const
 {
 	// loop over children
diff --git a/src/Buffer.h b/src/Buffer.h
index 4b360adc28..a51a48017e 100644
--- a/src/Buffer.h
+++ b/src/Buffer.h
@@ -316,6 +316,9 @@ public:
 	/// \return true if \p child is a child of this \c Buffer.
 	bool isChild(Buffer * child) const;
 	
+	/// \return true if this \c Buffer has children
+	bool hasChildren() const;
+	
 	/// return a vector of all children (and grandchildren)
 	ListOfBuffers getChildren(bool grand_children = true) const;
 
diff --git a/src/frontends/qt4/GuiDocument.cpp b/src/frontends/qt4/GuiDocument.cpp
index fca1a465e8..68bc7ab4b8 100644
--- a/src/frontends/qt4/GuiDocument.cpp
+++ b/src/frontends/qt4/GuiDocument.cpp
@@ -2782,10 +2782,7 @@ void GuiDocument::paramsToDialog()
 	}
 
 	// Master/Child
-	ListOfBuffers children;
-	if (bufferview())
-		children = buffer().getChildren(false);
-	if (children.empty()) {
+	if (!buffer().hasChildren()) {
 		masterChildModule->childrenTW->clear();
 		includeonlys_.clear();
 		docPS->showPanel(qt_("Child Documents"), false);
-- 
2.39.5