wxXML load/save improvements: added ability to not ignore whitespace and specify indentation level (patch #1541888)

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@41157 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

docs/latex/wx/xmlnode.tex

@@ -124,7 +124,7 @@ Removes the first properties which has the given {\it name} from the list of pro
 
 \membersection{wxXmlNode::GetChildren}\label{wxxmlnodegetchildren}
 
-\constfunc{wxXmlNode*}{GetChildren}{\param{void}{}}
+\constfunc{wxXmlNode*}{GetChildren}{\void}
 
 Returns the first child of this node.
 To get a pointer to the second child of this node (if it does exist), use the
@@ -139,6 +139,17 @@ Be aware that for nodes of type \texttt{wxXML\_ELEMENT\_NODE} (the most used nod
 content is an empty string. See \helpref{GetNodeContent()}{wxxmlnodegetnodecontent} for more details.
 
 
+\membersection{wxXmlNode::GetDepth}\label{wxxmlnodegetdepth}
+
+\constfunc{int}{GetDepth}{\param{wxXmlNode* }{grandparent = NULL}}
+
+Returns the number of nodes which separe this node from {\tt grandparent}.
+
+This function searches only the parents of this node until it finds {\tt grandparent}
+or the \NULL node (which is the parent of non-linked nodes or the parent of a
+\helpref{wxXmlDocument}{wxxmldocument}'s root node).
+
+
 \membersection{wxXmlNode::GetNodeContent}\label{wxxmlnodegetnodecontent}
 
 \constfunc{wxString}{GetNodeContent}{\void}
@@ -220,6 +231,14 @@ If {\it before\_node} is \NULL, then {\it child} is prepended to the list of chi
 becomes the first child of this node.
 Returns \true if {\it before\_node} has been found and the {\it child} node has been inserted.
 
+\membersection{wxXmlNode::IsWhitespaceOnly}\label{wxxmlnodecontainsiswhitespaceonly}
+
+\constfunc{bool}{IsWhitespaceOnly}{\void}
+
+Returns \true if the content of this node is a string containing only whitespaces (spaces,
+tabs, new lines, etc). Note that this function is locale-independent since the parsing of XML
+documents must always produce the exact same tree regardless of the locale it runs under.
+
 \membersection{wxXmlNode::RemoveChild}\label{wxxmlnoderemovechild}
 
 \func{bool}{RemoveChild}{\param{wxXmlNode* }{child}}