Re: [Gmod-ajax] Glyph coloration based on webservice with CanvasFeatures

[Loïc C. <loi...@ve...>]

Hi Colin,

Thank you for the quick answer.
To be more precise, the idea is the following: color my feature 
depending on the presence/absence from another application. Then, if the 
feature is present, append a link to the menu template.
The following code (as the former code) is only a test code. I have not 
yet implemented the full idea.

    function (featureObject, variableName, glyphObject, trackObject) {
         function markerIsInGnpIS(markerName) {
             console.log('here');
             var xhr = new XMLHttpRequest();
             xhr.open('GET',
    'http://localhost/GnpMap/webresources/marker/name/' + markerName,
    false);
             xhr.send(null);
             if (xhr.status == 200) {
                 return true
             }
             return false
         }

         function addLink(markerName) {
             var linkLabel = 'link';
             var menuTemplate = trackObject.config.menuTemplate;
             var already_added = false;
             for (var i = 0; i < menuTemplate.length; i++) {
                 if (menuTemplate[i].label == linkLabel) {
                     already_added = true;
                     break;
                 }
             }
             if (!already_added) { // negation, only for test...
                 menuTemplate.push(new function () {
                   this.action = 'iframeDialog', this.label = linkLabel,
    this.url = 'http://localhost/fakeURL', this.title = '{type} {name}'
                 })
             }
         }
         var name = featureObject.get('name');
         if (!markerIsInGnpIS(name)) { //negation only for test
             addLink(name);
             return 'red'
         }
         return 'green'
    }

This code works too, but I'm little annoyed with writing a one-liner 
code because it's hard to maintain.
Anyway, i don't have any clue to write the same code into tracks.conf.
I'm wondering if writing a plugin might be a good idea?

Another point is that I perform synchronous callback to my webservice. I 
would prefer to use asynchronous callback.
To do that, I defined my callback and try to use 
glyphObject.config.style.color = '<color>' instead of return '<color>' 
but it doesn't seems to works....
Do I modify the right value?

Best regards,
Loïc