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# haxe-ui
  • a
    is the chart completely hand coded then?
  • h
    I stole the right click menu code almost verbatim from the components example site
  • h
    Sorta
  • h
    it uses chart.js, the backend is node
  • a
    ahh
  • h
    it just took me 221 lines of code to pull database numbers and put them into that chart
  • h
    but the way I actually load it is neat
  • h
    here's basically every important part:
  • h
    Copy code
    hx

    //the fun part
    private function loadGraph(graphParams:GraphParams, srvURL:String = "10.65.100.21:8080"):String {
        //unitString is just a stringified list of units
        //which would be easy but I made the units an enum so I could type it stricter
        var unitString:String = Json.stringify([for (unit in graphParams.units) unitNames[EnumValueTools.getIndex(unit)]]);
        //same with yparams
        var yparamString:String = Json.stringify([for (param in graphParams.params) EnumValueTools.getName(param)]);
        //daterange is formatted as YYYYMMDDHHMMYYYYMMDDHHMM which isn't hard to read or understand at all why would you say that
        var dateRange = '${DateTools.format(graphParams.dateStart, '%Y%m%d%H%M')}${DateTools.format(graphParams.dateEnd, "%Y%m%d%H%M")}';
        //parameterize!
        var imgURL:String = 'http://$srvURL/dynamic/chart.jpg?DL=true&units=$unitString&yparams=$yparamString&daterange=$dateRange&sizeX=${graphParams.width}&sizeY=${graphParams.height}';

        //reload the graph display
        graphDisplay.resource = imgURL;
        //also return the url in case I want that
        //(i do in exactly one place)
        return imgURL;
    }
  • h
    Units is an enum of unit names, params is an enum of parameters
  • a
    I believe you can serialise a haxe enum so you wouldn't need the name parsing
  • h
    I need the name parsing because the unit names on the backend aren't the same as on the frontend
  • h
    it's the problem with running db queries on backend
  • h
    but yes you can serialize an enum with EnumValueTools.getName
  • h
    which I do for the parameters
  • a
    ahhhh
  • h
    also I just realized how important I'm making myself at this company
  • h
    nobody knows haxe but me
  • h
    oops
  • a
    😄
  • r
    Kinda random, but I wonder what is faster: string formatting using ``$var`` or StringBuf
  • r
    If it is the latter, maybe it would be better to make a ``getImgURL()`` function seperate
  • r
    Might make the code a lot easier to read
  • b
    i think it would make no practical difference perf wise in this scenario... but i agree with the idea that building the url could be clearer
  • b
    you could also use "core haxe" http ofc 🙂
  • b
    actually, that wouldnt work... 
    .resource
    in haxeui uses its own stuff... no mechanism to swap it out
  • r
  • b
    defo cleaner, esp when you want to start moving params about etc
  • r
    Also easier to document
  • f
    Yeah ! Just resolved the bug in tables where I would change columns and things would disappear. In the table view
    Copy code
    haxe
    private override function onDataChanged(data:Dynamic) {
        //var renderers = findComponents(ItemRenderer); OLD
        var renderers = findComponents("table_item_renderer", ItemRenderer); //NOW
        for (r in renderers) {
            r.onDataChanged(data);
        }
[...]
              itemRenderer = new CompoundItemRenderer();
                _tableview.itemRenderer = itemRenderer;
            }
            child.addClass("table_item_renderer");
            itemRenderer.addComponent(child);

            return child;
    In fact other item renderers would be integrated in the data update values loop of the table, and it would start hiding all these components. (and for some reason would also bother the vertical layout ) Now this surely won't work if you have a table inside a table lol I have now only two tiny far less important bugs left in the table view for me ( and one that could me) . Quite happy 🙂 I was getting obsessed with this table bug
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