/// <summary>
/// Encodes the given mxGraphModel by writing a (flat) XML sequence
/// of cell nodes as produced by the mxCellCodec. The sequence is
/// wrapped-up in a node with the name root.
/// </summary>
protected override void EncodeObject(mxCodec enc, Object obj, XmlNode node)
{
if (obj is mxGraphModel)
{
XmlNode rootNode = enc.Document.CreateElement("root");
mxGraphModel model = (mxGraphModel)obj;
enc.EncodeCell((mxICell)model.Root, rootNode, true);
node.AppendChild(rootNode);
}
}
/// <summary>
/// Reads the cells into the graph model. All cells are children of the root
/// element in the node.
/// </summary>
public override XmlNode BeforeDecode(mxCodec dec, XmlNode node, Object into)
{
if (node is XmlElement)
{
XmlElement elt = (XmlElement)node;
mxGraphModel model = null;
if (into is mxGraphModel)
{
model = (mxGraphModel)into;
}
else
{
model = new mxGraphModel();
}
// Reads the cells into the graph model. All cells
// are children of the root element in the node.
XmlNode root = elt.GetElementsByTagName("root")[0];
mxICell rootCell = null;
if (root != null)
{
XmlNode tmp = root.FirstChild;
while (tmp != null)
{
mxICell cell = dec.DecodeCell(tmp, true);
if (cell != null && cell.Parent == null)
{
rootCell = cell;
}
tmp = tmp.NextSibling;
}
root.ParentNode.RemoveChild(root);
}
// Sets the root on the model if one has been decoded
if (rootCell != null)
{
model.Root = rootCell;
}
}
return node;
}
/// <summary>
/// Reads the cells into the graph model. All cells are children of the root
/// element in the node.
/// </summary>
public override XmlNode BeforeDecode(mxCodec dec, XmlNode node, Object into)
{
if (node is XmlElement)
{
XmlElement elt = (XmlElement)node;
mxGraphModel model = null;
if (into is mxGraphModel)
{
model = (mxGraphModel)into;
}
else
{
model = new mxGraphModel();
}
// Reads the cells into the graph model. All cells
// are children of the root element in the node.
XmlNode root = elt.GetElementsByTagName("root")[0];
mxICell rootCell = null;
if (root != null)
{
XmlNode tmp = root.FirstChild;
while (tmp != null)
{
mxICell cell = dec.DecodeCell(tmp, true);
if (cell != null && cell.Parent == null)
{
rootCell = cell;
}
tmp = tmp.NextSibling;
}
root.ParentNode.RemoveChild(root);
}
// Sets the root on the model if one has been decoded
if (rootCell != null)
{
model.Root = rootCell;
}
}
return(node);
}
