org.deegree_impl.clients.wmsclient2.control
Class HighlightingListener

java.lang.Object
  org.deegree_impl.enterprise.control.AbstractListener
      org.deegree_impl.clients.wmsclient2.control.AbstractMapListener
          org.deegree_impl.clients.wmsclient2.control.HighlightingListener

All Implemented Interfaces:

java.util.EventListener, WebListener

public class HighlightingListener

extends AbstractMapListener

This class is for highlighting polygons via a RPC request event from the client. A new WMS request will be created with SLD. The SLD xml file will be created and saved. The WMS request for highlighting will be set.

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Author:

Katharina Lupp Created on 15.02.2004

Field Summary

private java.lang.String

sldUserStyle

Fields inherited from class org.deegree_impl.enterprise.control.AbstractListener

Constructor Summary

HighlightingListener()

Method Summary

void	actionPerformed(FormEvent event)
private WMSGetMapRequest	createRequest(RPCParameter[] para, ViewContext vc) creates the modified WMS Request including the URL for the SLD.
private java.lang.StringBuffer	createSLD(GM_Position[] coords, GM_Envelope env, java.lang.String queryLay, ViewContext vc) creates the SLD xml file.
private GM_Position[]	getCoordinates(RPCStruct struct) calculates the coordinates of the click event.
private java.lang.String	getQueryLayer(FormEvent event, RPCStruct struct) gets the layer to be highlighted.
protected double	getScale(WMSGetMapRequest mrm) the method returns the scale of the map defined as diagonal size of a pixel at the center of the map.
private void	highlight(java.lang.String queryLayer, WMSGetMapRequest gmr, ViewContext vc) sets the request for highlighting.
private void	saveSLD(java.lang.StringBuffer sld, ViewContext vc) saves the created SLD file.
protected java.util.HashMap	toMap(java.lang.String request) maps a string representation of a request to a HashMap

Methods inherited from class org.deegree_impl.enterprise.control.AbstractListener

getAlternativeNextPage, getNextPage, getRequest, getReturnValue, gotoErrorPage, handle, setAlternativeNextPage, setDefaultAlternativeNextPage, setDefaultNextPage, setNextPage, setReturnValue, toModel

Methods inherited from class java.lang.Object

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

Field Detail

sldUserStyle

private java.lang.String sldUserStyle

Constructor Detail

HighlightingListener

public HighlightingListener()

Method Detail

actionPerformed

public void actionPerformed(FormEvent event)

Specified by:

actionPerformed in interface WebListener

Overrides:

actionPerformed in class AbstractMapListener

Parameters:

event -

createRequest

private WMSGetMapRequest createRequest(RPCParameter[] para,
                                       ViewContext vc)
                                throws InconsistentRequestException,
                                       XMLParsingException,
                                       java.net.MalformedURLException

creates the modified WMS Request including the URL for the SLD.

Throws:

InconsistentRequestException

XMLParsingException

java.net.MalformedURLException

getCoordinates

private GM_Position[] getCoordinates(RPCStruct struct)

calculates the coordinates of the click event.

getQueryLayer

private java.lang.String getQueryLayer(FormEvent event,
                                       RPCStruct struct)

gets the layer to be highlighted.

highlight

private void highlight(java.lang.String queryLayer,
                       WMSGetMapRequest gmr,
                       ViewContext vc)
                throws WebServiceException,
                       java.io.IOException

sets the request for highlighting.

Throws:

WebServiceException

java.io.IOException

createSLD

private java.lang.StringBuffer createSLD(GM_Position[] coords,
                                         GM_Envelope env,
                                         java.lang.String queryLay,
                                         ViewContext vc)

creates the SLD xml file.

saveSLD

private void saveSLD(java.lang.StringBuffer sld,
                     ViewContext vc)
              throws java.io.IOException

saves the created SLD file.

Throws:

java.io.IOException

toMap

protected java.util.HashMap toMap(java.lang.String request)

maps a string representation of a request to a HashMap

getScale

protected double getScale(WMSGetMapRequest mrm)

the method returns the scale of the map defined as diagonal size of a pixel at the center of the map.