package org.wicketstuff.gmap.api;
import org.apache.wicket.Component;
import org.apache.wicket.ajax.AjaxEventBehavior;
import org.apache.wicket.ajax.AjaxRequestTarget;
import org.apache.wicket.markup.head.IHeaderResponse;
import org.apache.wicket.markup.html.form.TextField;
import org.apache.wicket.request.IRequestParameters;
import org.apache.wicket.request.Request;
import org.apache.wicket.request.cycle.RequestCycle;
import org.apache.wicket.util.time.Duration;
import org.wicketstuff.gmap.GMapHeaderContributor;
import org.wicketstuff.gmap.geocoder.GeocoderStatus;
/**
*/
public abstract class GClientGeocoder extends AjaxEventBehavior
{
private static final long serialVersionUID = 1L;
// the markup id of the TextField providing the requested address.
private final String addressFieldMarkupId;
private final GMapHeaderContributor headerContrib;
/**
* The time to wait before making a new request to self
*/
private final Duration timeout;
/**
* Construct.
*
* @param event
*/
public GClientGeocoder(String event, TextField<?> addressField)
{
this(event, addressField, Duration.milliseconds(500));
}
public GClientGeocoder(String event, TextField<?> addressField, Duration timeout)
{
super(event);
addressField.setOutputMarkupId(true);
this.addressFieldMarkupId = addressField.getMarkupId();
this.headerContrib = new GMapHeaderContributor();
this.timeout = timeout;
}
@Override
public void renderHead(Component c, IHeaderResponse response)
{
super.renderHead(c, response);
headerContrib.renderHead(c, response);
}
@Override
protected void onEvent(AjaxRequestTarget target)
{
Request request = RequestCycle.get().getRequest();
IRequestParameters requestParameters = request.getRequestParameters();
String status = requestParameters.getParameterValue("status").toString();
GeocoderStatus geocoderStatus = status != null ? GeocoderStatus.valueOf(status) : null;
String address = null;
GLatLng coordinates = null;
if (geocoderStatus == null)
{
StringBuilder js = new StringBuilder();
js.append("setTimeout(function() {")
.append(getCallbackScript())
.append("}, ")
.append(timeout.getMilliseconds())
.append(");");
target.appendJavaScript(js);
}
else
{
if (GeocoderStatus.OK.equals(geocoderStatus))
{
address = requestParameters.getParameterValue("address").toString();
coordinates = GLatLng.parse(requestParameters.getParameterValue("coordinates").toString());
}
onGeoCode(target, geocoderStatus, address, coordinates);
}
}
/**
* @param target
* @param status The status of the client side operation.
* @param address The address if the status is {@code GeocoderStatus#OK}, otherwise- {@code null}
* @param latLng The coordinates if the status is {@code GeocoderStatus#OK}, otherwise- {@code null}
*/
public abstract void onGeoCode(AjaxRequestTarget target, GeocoderStatus status, String address, GLatLng latLng);
@Override
public CharSequence getCallbackScript()
{
return "Wicket.geocoder.getLatLng('" + getCallbackUrl() + "', '" + addressFieldMarkupId + "');";
}
}