/**
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* $Id: mxStylesheetCodec.java,v 1.11 2011-06-13 08:18:42 gaudenz Exp $
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* Copyright (c) 2006-2010, JGraph Ltd
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*/
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package com.vci.rmip.workflow.client.editor.code;
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import java.util.Hashtable;
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import java.util.Iterator;
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import java.util.Map;
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import org.w3c.dom.Element;
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import org.w3c.dom.Node;
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import com.mxgraph.util.mxUtils;
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import com.mxgraph.view.mxStylesheet;
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/**
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* Codec for mxStylesheets. This class is created and registered
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* dynamically at load time and used implicitely via mxCodec
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* and the mxCodecRegistry.
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*/
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public class GraphStylesheetCodec extends GraphObjectCodec
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{
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/**
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* Constructs a new model codec.
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*/
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public GraphStylesheetCodec()
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{
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this(new mxStylesheet());
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}
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/**
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* Constructs a new stylesheet codec for the given template.
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*/
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public GraphStylesheetCodec(Object template)
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{
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this(template, null, null, null);
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}
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/**
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* Constructs a new model codec for the given arguments.
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*/
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public GraphStylesheetCodec(Object template, String[] exclude,
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String[] idrefs, Map<String, String> mapping)
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{
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super(template, exclude, idrefs, mapping);
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}
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/**
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* Encodes the given mxStylesheet.
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*/
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public Node encode(GraphCodec enc, Object obj)
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{
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Element node = enc.document.createElement(getName());
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if (obj instanceof mxStylesheet)
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{
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mxStylesheet stylesheet = (mxStylesheet) obj;
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Iterator<Map.Entry<String, Map<String, Object>>> it = stylesheet
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.getStyles().entrySet().iterator();
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while (it.hasNext())
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{
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Map.Entry<String, Map<String, Object>> entry = it.next();
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Element styleNode = enc.document.createElement("add");
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String stylename = entry.getKey();
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styleNode.setAttribute("as", stylename);
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Map<String, Object> style = entry.getValue();
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Iterator<Map.Entry<String, Object>> it2 = style.entrySet()
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.iterator();
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while (it2.hasNext())
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{
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Map.Entry<String, Object> entry2 = it2.next();
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Element entryNode = enc.document.createElement("add");
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entryNode.setAttribute("as",
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String.valueOf(entry2.getKey()));
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entryNode.setAttribute("value", getStringValue(entry2));
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styleNode.appendChild(entryNode);
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}
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if (styleNode.getChildNodes().getLength() > 0)
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{
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node.appendChild(styleNode);
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}
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}
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}
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return node;
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}
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/**
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* Returns the string for encoding the given value.
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*/
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protected String getStringValue(Map.Entry<String, Object> entry)
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{
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if (entry.getValue() instanceof Boolean)
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{
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return ((Boolean) entry.getValue()) ? "1" : "0";
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}
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return entry.getValue().toString();
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}
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/**
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* Decodes the given mxStylesheet.
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*/
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public Object decode(GraphCodec dec, Node node, Object into)
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{
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Object obj = null;
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if (node instanceof Element)
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{
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String id = ((Element) node).getAttribute("id");
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obj = dec.objects.get(id);
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if (obj == null)
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{
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obj = into;
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if (obj == null)
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{
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obj = cloneTemplate(node);
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}
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if (id != null && id.length() > 0)
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{
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dec.putObject(id, obj);
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}
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}
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node = node.getFirstChild();
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while (node != null)
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{
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if (!processInclude(dec, node, obj)
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&& node.getNodeName().equals("add")
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&& node instanceof Element)
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{
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String as = ((Element) node).getAttribute("as");
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if (as != null && as.length() > 0)
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{
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String extend = ((Element) node).getAttribute("extend");
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Map<String, Object> style = (extend != null) ? ((mxStylesheet) obj)
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.getStyles().get(extend) : null;
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if (style == null)
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{
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style = new Hashtable<String, Object>();
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}
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else
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{
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style = new Hashtable<String, Object>(style);
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}
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Node entry = node.getFirstChild();
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while (entry != null)
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{
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if (entry instanceof Element)
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{
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Element entryElement = (Element) entry;
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String key = entryElement.getAttribute("as");
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if (entry.getNodeName().equals("add"))
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{
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String text = entry.getTextContent();
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Object value = null;
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if (text != null && text.length() > 0)
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{
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value = mxUtils.eval(text);
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}
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else
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{
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value = entryElement
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.getAttribute("value");
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}
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if (value != null)
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{
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style.put(key, value);
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}
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}
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else if (entry.getNodeName().equals("remove"))
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{
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style.remove(key);
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}
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}
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entry = entry.getNextSibling();
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}
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((mxStylesheet) obj).putCellStyle(as, style);
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}
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}
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node = node.getNextSibling();
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}
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}
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return obj;
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}
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}
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