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Link.java
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package com.mxgraph.examples.web;
import java.io.IOException;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.xml.transform.TransformerFactory;
import javax.xml.transform.dom.DOMSource;
import javax.xml.transform.stream.StreamResult;
import org.mortbay.jetty.Request;
import org.w3c.dom.Document;
import com.mxgraph.util.mxCellRenderer;
import com.mxgraph.view.mxGraph;
public class Link extends HttpServlet
{
/**
*
*/
private static final long serialVersionUID = 6372620357515370122L;
protected void doGet(HttpServletRequest request,
HttpServletResponse response) throws ServletException, IOException
{
// Creates graph with model
mxGraph graph = new mxGraph()
{
public String getLinkForCell(Object cell)
{
return "http://www.mxgraph.com";
}
public String getTargetForCell(Object cell)
{
return "_blank";
}
};
// Adds cells into the model
Object parent = graph.getDefaultParent();
graph.getModel().beginUpdate();
try
{
Object v1 = graph.insertVertex(parent, null, "Hello", 20, 20, 80,
30);
Object v2 = graph.insertVertex(parent, null, "World!", 240, 150,
80, 30, "shape=cloud");
graph.insertEdge(parent, null, "e1", v1, v2,
"labelBackgroundColor=white;labelBorderColor=green;");
}
finally
{
graph.getModel().endUpdate();
}
Document doc = null;
String agent = request.getHeader("User-Agent");
// Creates VML or SVG depending on the User-Agent
if (agent != null && agent.contains("Gecko"))
{
doc = mxCellRenderer.createSvgDocument(graph, null, 1, null, null);
}
else if (agent != null && agent.contains("MSIE"))
{
doc = mxCellRenderer.createVmlDocument(graph, null, 1, null, null);
}
else
{
doc = mxCellRenderer.createHtmlDocument(graph, null, 1, null, null);
}
try
{
TransformerFactory.newInstance().newTransformer().transform(
new DOMSource(doc),
new StreamResult(response.getOutputStream()));
}
catch (Exception e)
{
throw new ServletException(e);
}
response.setStatus(HttpServletResponse.SC_OK);
((Request) request).setHandled(true);
}
}