Primefaces GMap OverlaySelect事件，并在单击时弹出输出面板

Question

I've a probleme in primeface 4. I have a map and I want to see an output panel while clicking on a marked position in the map

 <p:gmap model="#{addMarkers.emptyModel}" id="gmap" streetView="false" navigationControl="true" mapTypeControl="true" draggable="true" center="26.959512, -12.821044" zoom="8" type="ROADMAP" style="width:100%;height:500px"> <p:ajax event="overlaySelect" listener="#{addMarkers.onMarkerSelect}" id="open1" update="messages"/> <p:gmapInfoWindow id="infoWindow"> <p:outputPanel style="text-align: center; margin: auto"> <p:commandButton ajax="true" type="button" value="open map" onclick="PF('dlg').show();" /> 

When i do refresh the page, the problem seems to be solved and surprisingly I get my output panel ! After debuging I found that I have a little problem in my ManagedBeans

public void onMarkerSelect(OverlaySelectEvent event)  {
    marker = (Marker) event.getOverlay();
     FacesContext.getCurrentInstance().addMessage(null, new FacesMessage(FacesMessage.SEVERITY_INFO, "scanning the materials", "Site :"+ marker.getTitle() ));

}

Before refreshing I'm getting: event overlay type is unknown and the value is NULL After refereshing I'm getting event overlay type is "Marker" and the value is #440

Answer 1

If you're still struggling with this, I'd suggest to check when the MapModel constructor is used. It should be done in the definition of the bean's field itself or in the postInit funciton, to assure it will be called just once, and not inside a getter or something like that. Example:

@ManagedBean(name = EstablecimientoInstalacionesViewDetailBean.ID)
@ViewScoped
public class ViewDetailBean extends AbstractViewDetailBean {

private final static MapModel mapModel = new DefaultMapModel();
[...]
@Override
protected void postInit() {
    refreshMapModel();
}