RegisterListener in 3.0 branch

[Jeff Chimene]

Hi,

I'm wondering how to register listeners for general tracing.

The invocation of registerListener() call throws an error: "this is not defined"
I'm using the 3.1.5 tag
 

<script src="SCION/dist/scxml.js" type="text/javascript"></script>
scxml.urlToModel("sfm-coach.xml", function(err, model) {
                if (err) { throw err; }

                // instantiate the interpreter
                var interpreter = new scxml.scion.Statechart(model);
               
                interpreter.registerListener(listeners);

                // start the interpreter
                interpreter.start();

                interpreter.gen({
                    name : "init",
                    data : api
                });
            });

Thanks!

[Jacob Beard]

Hi Jeff,

Can you please post the initialization of the variable listeners? Thanks,

Jake

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[Jeff Chimene]

Hi Jacob,

Here's the entire function. Thank you for your support!

        $(document).ready(function()
        {
            var $wnd = window;
            var api = null;

            var listeners = {
                    onEntry: function(stateId) { console.log('entering state ' + stateId); },
                    onExit: function(stateId) { console.log('exiting state ' + stateId); },
                    onTransition: function(sourceStateId, targetIds) {
                        if (targetIds && targetIds.length) {
                            console.log('transitioning from ' + sourceStateId + ' to ' + targetIds.join(','));
                        } else {
                            console.log('executing target-less transition in ' + sourceStateId);
                        }
                    },
                    onError: function(err) {
                        console.log('ERROR:' + JSON.stringify(err));
                    }
                };

            scxml.urlToModel("sfm-coach.xml", function(err, model)
            {
                if (err)
                {
                    throw err;
                }

                api = {
                    jQuery : function()
                    {
                        return jQuery;
                    },
                    window : function()
                    {
                        return window;
                    }
                };

                // instantiate the interpreter
                var interpreter = new scxml.scion.Statechart(model);
               
                interpreter.registerListener(listeners);

                // start the interpreter
                interpreter.start();
                interpreter.gen({
                    name : "init",
                    data : api
                });
            });

        });

[Jacob Beard]

Can you please post a stack trace? Thank you,

Jake

[Jeff Chimene]

Hi Jacob,

It looks like the /this/ is now passed as the 2nd argument to on() when using

<script src="https://cdnjs.cloudflare.com/ajax/libs/scion/4.3.1/scxml.js"></script>

{
    key: 'registerListener',
    value: function registerListener(listener) {
      BaseInterpreter.EVENTS.forEach(function (event) {
        if (listener[event]) this.on(event, listener[event]);
      }, this);
    }

This is not the case with the 3.1.5 tag on GitHub

/** @expose */registerListener:
    function registerListener(listener){BaseInterpreter.EVENTS.forEach(function(event){
        if(listener[event])this.on(event,listener[event]);});}
,

[Jeff Chimene]

On Tuesday, July 3, 2018 at 8:13:07 AM UTC-7, Jeff Chimene wrote:

Hi Jacob,

It looks like the /this/ is now passed as the 2nd argument to FOREACH() when using

[Jacob Beard]

It looks like this might have been a bug in 3.1.5 that got fixed in 4.3.1. Any chance you would be able to upgrade to 4.3.1?

Thanks,

Jake