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/**
* $Id: mxRootChangeCodec.js,v 1.6 2010-09-15 14:38:51 gaudenz Exp $
* Copyright (c) 2006-2010, JGraph Ltd
*/
mxCodecRegistry.register(function()
{
/**
* Class: mxRootChangeCodec
*
* Codec for <mxRootChange>s. This class is created and registered
* dynamically at load time and used implicitely via <mxCodec> and
* the <mxCodecRegistry>.
*
* Transient Fields:
*
* - model
* - previous
* - root
*/
var codec = new mxObjectCodec(new mxRootChange(),
['model', 'previous', 'root']);
/**
* Function: onEncode
*
* Encodes the child recursively.
*/
codec.afterEncode = function(enc, obj, node)
{
enc.encodeCell(obj.root, node);
return node;
};
/**
* Function: beforeDecode
*
* Decodes the optional children as cells
* using the respective decoder.
*/
codec.beforeDecode = function(dec, node, obj)
{
if (node.firstChild != null &&
node.firstChild.nodeType == mxConstants.NODETYPE_ELEMENT)
{
// Makes sure the original node isn't modified
node = node.cloneNode(true);
var tmp = node.firstChild;
obj.root = dec.decodeCell(tmp, false);
var tmp2 = tmp.nextSibling;
tmp.parentNode.removeChild(tmp);
tmp = tmp2;
while (tmp != null)
{
tmp2 = tmp.nextSibling;
dec.decodeCell(tmp);
tmp.parentNode.removeChild(tmp);
tmp = tmp2;
}
}
return node;
};
/**
* Function: afterDecode
*
* Restores the state by assigning the previous value.
*/
codec.afterDecode = function(dec, node, obj)
{
obj.previous = obj.root;
return obj;
};
// Returns the codec into the registry
return codec;
}());
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