primefaces org.primefaces.component.diagram override

Question

I have a problem with org.primefaces.component.diagram, i want to add an action when click on any overlay or connector, i make this using jquery, but the problem is that there is no identifier for the connection, after search i was able to get the ids of the 2 end points of the connection but if there is many connection between the same points then i cannot distinguish between them, i tried to override the diagram and add "connectionId" attribute on the connection but i got an exception in the front end :

Uncaught ReferenceError: connectionId590236 is not defined at eval (eval at (jquery.js.xhtml?ln=primefaces&v=5.2:14), :1:1488) screenshot

Answer 1

finally i found an acceptable solution :

-> add an label overlay on the connection and set the identifier on it.

org.primefaces.model.diagram.Connection conn = new org.primefaces.model.diagram.Connection(
            EndPointA, EndPointB);

LabelOverlay labelOverlay = new LabelOverlay(connection.getId(), "labelOverlayClass", 0.3);
    conn.getOverlays().add(labelOverlay);

-> then add JS function to handle on dbclick action on the connection and get the id from its related overlay using the classes "._jsPlumb_overlay" and "._jsPlumb_hover"

<p:remoteCommand name="connectionClicked"
    actionListener="#{yourBean.onConnectionDoubleClick}" />

<script type="text/javascript">
    var connectionId;

    $('._jsPlumb_connector').on('dblclick', function(e) {

        $('._jsPlumb_overlay._jsPlumb_hover').each(function() {
            connectionId =  $(this).text();
        });

        connectionClicked([ { name : 'connectionId', value : connectionId } ]);
    });
    });
</script>

-> finally in the bean you extract the id and do whatever you want

public void onConnectionDoubleClick() {
    Map<String, String> params = FacesContext.getCurrentInstance()
            .getExternalContext().getRequestParameterMap();

    String connectionId = params.get("connectionId");

    if(StringUtils.isBlank(connectionId))
        return;

    .........