com.yworks.yfiles.server.tiles.demos
Class GroupedGraphServlet

java.lang.Object
  javax.servlet.GenericServlet
      javax.servlet.http.HttpServlet
          com.yworks.yfiles.server.tiles.servlet.BaseServlet
              com.yworks.yfiles.server.tiles.servlet.UpdateServlet
                  com.yworks.yfiles.server.tiles.demos.GroupedGraphServlet

All Implemented Interfaces:

Serializable, Servlet, ServletConfig

public class GroupedGraphServlet
extends UpdateServlet

A demo servlet which incrementally adapts the layout of a grouped graph during group navigation.

See Also:

Serialized Form

Constructor Summary

GroupedGraphServlet()

Method Summary

protected void	closeGroup(Graph2D graph, Node groupNode) Collape a group node.
void	init(ServletConfig servletConfig)
protected void	openFolder(Graph2D graph, Node folderNode) Expand a folder node.
protected void	switchToSubgraph(HttpSession session, String graphName, Graph2D newGraph, Graph2D oldGraph) calls the super method and then does a new layout from scratch.

Methods inherited from class com.yworks.yfiles.server.tiles.servlet.UpdateServlet

createEdge, createFolderName, createFolderNode, createGroupName, createGroupNode, createNode, getDefaultEdgeRealizer, getDefaultFolderNodeRealizer, getDefaultGroupNodeRealizer, getDefaultNodeRealizer, handleGetRequest, handlePostRequest, moveNodes, moveToSubgraph, removeEdge, removeEdgeLabel, removeNode, removeNodeLabel, setDefaultEdgeRealizer, setDefaultFolderNodeRealizer, setDefaultGroupNodeRealizer, setDefaultNodeRealizer, setLabelText, setText, writeRealizerImage, writeRealizers

Methods inherited from class com.yworks.yfiles.server.tiles.servlet.BaseServlet

cachedGraphs, cacheGraph, doGet, doPost, getEdgeDescription, getEdgeURL, getForId, getGraph, getGraphBounds, getId, getId, getId, getId, getNodeDescription, getNodeURL, getWriter, hasDescriptions, hasURLs, init, initialize, newGraph, setEdgeDescription, setEdgeURL, setNodeDescription, setNodeURL, uncacheGraph, writeWorldBounds

Methods inherited from class javax.servlet.http.HttpServlet

doDelete, doHead, doOptions, doPut, doTrace, getLastModified, service, service

Methods inherited from class javax.servlet.GenericServlet

destroy, getInitParameter, getInitParameterNames, getServletConfig, getServletContext, getServletInfo, getServletName, log, log

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

GroupedGraphServlet

public GroupedGraphServlet()

Method Detail

init

public void init(ServletConfig servletConfig)
          throws ServletException

Specified by:

init in interface Servlet

Overrides:

init in class UpdateServlet

Throws:

ServletException

openFolder

protected void openFolder(Graph2D graph,
                          Node folderNode)

Expand a folder node. After expanding the folder node, an incremental layout is automatically triggered. For this, the expanded node and all of its decendants will be treated as incremental elements.

Overrides:

openFolder in class UpdateServlet

Parameters:

graph - the current subgraph

folderNode - the folder to be opened

closeGroup

protected void closeGroup(Graph2D graph,
                          Node groupNode)

Collape a group node. After collapsing the group node, an incremental layout is automatically triggered. For this, the collapsed node and its adjacent edges are treated as incremental elements.

Overrides:

closeGroup in class UpdateServlet

Parameters:

graph - the current subgraph.

groupNode - the group to be closed

switchToSubgraph

protected void switchToSubgraph(HttpSession session,
                                String graphName,
                                Graph2D newGraph,
                                Graph2D oldGraph)

calls the super method and then does a new layout from scratch.

Overrides:

switchToSubgraph in class UpdateServlet

Parameters:

session - the session for the request

graphName - the symbolic name of the whole hierarchically organized graph

newGraph - the subgraph to switch to

oldGraph - the subgraph before serving the request