massive changes in automation state handling, not entirely complete; some bug fixes for automation line drawing

git-svn-id: svn://localhost/ardour2/trunk@1034 d708f5d6-7413-0410-9779-e7cbd77b26cf

1 files changed, 27 insertions, 2 deletions

diff --git a/libs/pbd/xml++.cc b/libs/pbd/xml++.cc
index 03fa116279..1b10be89f5 100644
--- a/libs/pbd/xml++.cc
+++ b/libs/pbd/xml++.cc
@@ -216,13 +216,38 @@ XMLNode::set_content(const string & c)
 	return _content;
 }
 
+XMLNode*
+XMLNode::child (const char *name) const
+{
+	/* returns first child matching name */
+
+	static XMLNodeList retval;
+	XMLNodeConstIterator cur;
+	
+	if (name == 0) {
+		return 0;
+	}
+	    
+	retval.erase(retval.begin(), retval.end());
+	
+	for (cur = _children.begin(); cur != _children.end(); ++cur) {
+		if ((*cur)->name() == name) {
+			return *cur;
+		}
+	}
+	    
+	return 0;
+}
+
 const XMLNodeList & 
-XMLNode::children(const string & n) const
+XMLNode::children(const string& n) const
 {
+	/* returns all children matching name */
+
 	static XMLNodeList retval;
 	XMLNodeConstIterator cur;
 	
-	if (n.length() == 0) {
+	if (n.empty()) {
 		return _children;
 	}