org.deegree_impl.clients.wmsclient.control
Class AbstractMapListener

java.lang.Object
  org.deegree_impl.enterprise.control.AbstractListener
      org.deegree_impl.clients.wmsclient.control.AbstractMapListener

All Implemented Interfaces:

java.util.EventListener, WebListener

Direct Known Subclasses:

InfoListener, PanListener, RecenterListener, RefreshListener, ResetListener, SelectStyleListener, ZoomInListener, ZoomOutListener

abstract class AbstractMapListener

extends AbstractListener

Basic class for all listerens that shall be notified if a map cliented raises an action/event.

There are several predefined listeres for actions that most map clients support:

• ZoomInListener for handling zoomin actions. supported are zooming via point or vie rectangle.
• ZoomOutListener for handling zoomout action.
• PanListener for handling of pan action. supported is panning to eight directions.
• RecenterListener recenters the map to a specified point. This can be interpreted as a special versio of zooming
• RefreshListener reloads the map without any change
• ResetListener recovers the initial status of the map
• InfoListener will be notified if a feature info request should be send.

The user can additional listeners/action by extending the AbstractActionListener class or one of the predefined listener.

Each Listerner have to be registered to the MapListener which is the class that will be informed about each event/action within a map client. To register a class as listener it has to stored within the MapListener.ConfigurationFile.

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Version:

$Revision: 1.6 $ $Date: 2004/02/19 10:08:56 $

Author:

Andreas Poth

Field Summary

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

Constructor Summary

(package private)

AbstractMapListener()

Method Summary

void	actionPerformed(FormEvent event)
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.
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

Constructor Detail

AbstractMapListener

AbstractMapListener()

Method Detail

actionPerformed

public void actionPerformed(FormEvent event)

Specified by:

actionPerformed in interface WebListener

Specified by:

actionPerformed in class AbstractListener

Parameters:

event -

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.