81 lines
1.7 KiB
JavaScript
81 lines
1.7 KiB
JavaScript
/**
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* Copyright (c) 2006-2015, JGraph Ltd
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* Copyright (c) 2006-2015, Gaudenz Alder
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*/
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mxCodecRegistry.register(function()
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{
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/**
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* Class: mxModelCodec
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*
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* Codec for <mxGraphModel>s. This class is created and registered
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* dynamically at load time and used implicitly via <mxCodec>
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* and the <mxCodecRegistry>.
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*/
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var codec = new mxObjectCodec(new mxGraphModel());
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/**
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* Function: encodeObject
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*
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* Encodes the given <mxGraphModel> by writing a (flat) XML sequence of
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* cell nodes as produced by the <mxCellCodec>. The sequence is
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* wrapped-up in a node with the name root.
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*/
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codec.encodeObject = function(enc, obj, node)
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{
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var rootNode = enc.document.createElement('root');
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enc.encodeCell(obj.getRoot(), rootNode);
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node.appendChild(rootNode);
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};
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/**
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* Function: decodeChild
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*
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* Overrides decode child to handle special child nodes.
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*/
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codec.decodeChild = function(dec, child, obj)
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{
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if (child.nodeName == 'root')
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{
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this.decodeRoot(dec, child, obj);
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}
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else
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{
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mxObjectCodec.prototype.decodeChild.apply(this, arguments);
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}
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};
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/**
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* Function: decodeRoot
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*
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* Reads the cells into the graph model. All cells
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* are children of the root element in the node.
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*/
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codec.decodeRoot = function(dec, root, model)
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{
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var rootCell = null;
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var tmp = root.firstChild;
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while (tmp != null)
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{
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var cell = dec.decodeCell(tmp);
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if (cell != null && cell.getParent() == null)
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{
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rootCell = cell;
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}
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tmp = tmp.nextSibling;
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}
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// Sets the root on the model if one has been decoded
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if (rootCell != null)
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{
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model.setRoot(rootCell);
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}
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};
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// Returns the codec into the registry
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return codec;
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}());
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