/// <summary>
/// Parses the given node into the object or returns a new object
/// representing the given node.
/// Dec is a reference to the calling decoder. It is used to decode
/// complex objects and resolve references.
/// If a node has an id attribute then the object cache is checked for the
/// object. If the object is not yet in the cache then it is constructed
/// using the constructor of template and cached in mxCodec.objects.
/// This implementation decodes all attributes and childs of a node
/// according to the following rules:
/// - If the variable name is in exclude or if the attribute name is "id"
/// or "as" then it is ignored.
/// - If the variable name is in idrefs then mxCodec.getObject is used
/// to replace the reference with an object.
/// - The variable name is mapped using a reverse mapping.
/// - If the value has a child node, then the codec is used to create a
/// child object with the variable name taken from the "as" attribute.
/// - If the object is an array and the variable name is empty then the
/// value or child object is appended to the array.
/// - If an add child has no value or the object is not an array then
/// the child text content is evaluated using mxUtils.eval.
/// If no object exists for an ID in idrefs a warning is issued
/// using mxLog.warn.
/// Returns the resulting object that represents the given XML
/// node or the configured given object.
/// </summary>
/// <param name="dec">Codec that controls the encoding process.</param>
/// <param name="node">XML node to be decoded.</param>
/// <param name="into">Optional objec to encode the node into.</param>
/// <returns>Returns the resulting object that represents the given XML node
/// or the object given to the method as the into parameter.</returns>
public virtual Object Decode(mxCodec dec, XmlNode node, Object into)
{
Object obj = null;
if (node is XmlElement)
{
string id = ((XmlElement)node).GetAttribute("id");
obj = (dec.Objects.ContainsKey(id)) ? dec.Objects[id] : null;
if (obj == null)
{
obj = into;
if (obj == null)
{
obj = CloneTemplate(node);
}
if (id != null && id.Length > 0)
{
dec.PutObject(id, obj);
}
}
node = BeforeDecode(dec, node, obj);
DecodeNode(dec, node, obj);
obj = AfterDecode(dec, node, obj);
}
return(obj);
}
/// <summary>
/// Decodes the given mxStylesheet.
/// </summary>
public override Object Decode(mxCodec dec, XmlNode node, Object into)
{
Object obj = null;
if (node is XmlElement)
{
string id = ((XmlElement)node).GetAttribute("id");
obj = (dec.Objects.ContainsKey(id)) ? dec.Objects[id] : null;
if (obj == null)
{
obj = into;
if (obj == null)
{
obj = CloneTemplate(node);
}
if (id != null && id.Length > 0)
{
dec.PutObject(id, obj);
}
}
node = node.FirstChild;
while (node != null)
{
if (!ProcessInclude(dec, node, obj) && node.Name.Equals("add") && node is XmlElement)
{
string name = ((XmlElement) node).GetAttribute("as");
if (name != null && name.Length > 0)
{
string extend = ((XmlElement) node).GetAttribute("extend");
Dictionary<string, Object> style = (extend != null && ((mxStylesheet)obj).Styles.ContainsKey(extend)) ?
((mxStylesheet)obj).Styles[extend] : null;
if (style == null)
{
style = new Dictionary<string, Object>();
}
else
{
style = new Dictionary<string, Object>(style);
}
XmlNode entry = node.FirstChild;
while (entry != null)
{
if (entry is XmlElement)
{
XmlElement entryElement = (XmlElement)entry;
string key = entryElement.GetAttribute("as");
if (entry.Name.Equals("add"))
{
string text = entryElement.Value;
Object value = null;
if (text != null && text.Length > 0)
{
value = mxUtils.Eval(text);
}
else
{
value = entryElement.GetAttribute("value");
}
if (value != null)
{
style[key] = value;
}
}
else if (entry.Name.Equals("remove"))
{
style.Remove(key);
}
}
entry = entry.NextSibling;
}
((mxStylesheet) obj).PutCellStyle(name, style);
}
}
node = node.NextSibling;
}
}
return obj;
}
/// <summary>
/// Parses the given node into the object or returns a new object
/// representing the given node.
/// Dec is a reference to the calling decoder. It is used to decode
/// complex objects and resolve references.
/// If a node has an id attribute then the object cache is checked for the
/// object. If the object is not yet in the cache then it is constructed
/// using the constructor of template and cached in mxCodec.objects.
/// This implementation decodes all attributes and childs of a node
/// according to the following rules:
/// - If the variable name is in exclude or if the attribute name is "id"
/// or "as" then it is ignored.
/// - If the variable name is in idrefs then mxCodec.getObject is used
/// to replace the reference with an object.
/// - The variable name is mapped using a reverse mapping.
/// - If the value has a child node, then the codec is used to create a
/// child object with the variable name taken from the "as" attribute.
/// - If the object is an array and the variable name is empty then the
/// value or child object is appended to the array.
/// - If an add child has no value or the object is not an array then
/// the child text content is evaluated using mxUtils.eval.
/// If no object exists for an ID in idrefs a warning is issued
/// using mxLog.warn.
/// Returns the resulting object that represents the given XML
/// node or the configured given object.
/// </summary>
/// <param name="dec">Codec that controls the encoding process.</param>
/// <param name="node">XML node to be decoded.</param>
/// <param name="into">Optional objec to encode the node into.</param>
/// <returns>Returns the resulting object that represents the given XML node
/// or the object given to the method as the into parameter.</returns>
public virtual Object Decode(mxCodec dec, XmlNode node, Object into)
{
Object obj = null;
if (node is XmlElement)
{
string id = ((XmlElement)node).GetAttribute("id");
obj = (dec.Objects.ContainsKey(id)) ? dec.Objects[id] : null;
if (obj == null)
{
obj = into;
if (obj == null)
{
obj = CloneTemplate(node);
}
if (id != null && id.Length > 0)
{
dec.PutObject(id, obj);
}
}
node = BeforeDecode(dec, node, obj);
DecodeNode(dec, node, obj);
obj = AfterDecode(dec, node, obj);
}
return obj;
}
/// <summary>
/// Decodes the given mxStylesheet.
/// </summary>
public override Object Decode(mxCodec dec, XmlNode node, Object into)
{
Object obj = null;
if (node is XmlElement)
{
string id = ((XmlElement)node).GetAttribute("id");
obj = (dec.Objects.ContainsKey(id)) ? dec.Objects[id] : null;
if (obj == null)
{
obj = into;
if (obj == null)
{
obj = CloneTemplate(node);
}
if (id != null && id.Length > 0)
{
dec.PutObject(id, obj);
}
}
node = node.FirstChild;
while (node != null)
{
if (!ProcessInclude(dec, node, obj) && node.Name.Equals("add") && node is XmlElement)
{
string name = ((XmlElement)node).GetAttribute("as");
if (name != null && name.Length > 0)
{
string extend = ((XmlElement)node).GetAttribute("extend");
Dictionary <string, Object> style = (extend != null && ((mxStylesheet)obj).Styles.ContainsKey(extend)) ?
((mxStylesheet)obj).Styles[extend] : null;
if (style == null)
{
style = new Dictionary <string, Object>();
}
else
{
style = new Dictionary <string, Object>(style);
}
XmlNode entry = node.FirstChild;
while (entry != null)
{
if (entry is XmlElement)
{
XmlElement entryElement = (XmlElement)entry;
string key = entryElement.GetAttribute("as");
if (entry.Name.Equals("add"))
{
string text = entryElement.Value;
Object value = null;
if (text != null && text.Length > 0)
{
value = mxUtils.Eval(text);
}
else
{
value = entryElement.GetAttribute("value");
}
if (value != null)
{
style[key] = value;
}
}
else if (entry.Name.Equals("remove"))
{
style.Remove(key);
}
}
entry = entry.NextSibling;
}
((mxStylesheet)obj).PutCellStyle(name, style);
}
}
node = node.NextSibling;
}
}
return(obj);
}
