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# haxe-ui
  • h
    do I need to update the backend ?
  • b
    dont think so... i would pull latest of everything now just for good measure
  • b
    btw, i think you need the other part too... the part that sets it from the data
  • h
    I have that further down the file
  • b
    Copy code
    haxe
    private override function onDataChanged(data:Dynamic) {
        super.onDataChanged(data);
        theValue.text = Std.string(Reflect.field(data, this.id));
    }
  • b
    right
  • h
    I'll check the backend in a minute. One other question in the UI it updates the component fields and the data is copied into the ds. On the logic side should I be accessing the values from the ds ? and modifying it that way too ? I assume so but in fact I wasn't before - just checking how this is supposed to work
  • b
    ideally yeah, the data source should generally be the "master", it doesnt have to be, there is no restrictions or anything, but it keeps things simpler
  • h
    ok
  • h
    just checked my haxeui-flixel submodule commit and it matches the latest on your repo
  • h
    so I'm up to date
  • b
    ill knock up a "proper" example if you want later this eve, even without Dynamic and implementing 
    IDataObject
    so you dont have to worry updates on fields... makes this super easy to work with (imo)
  • b
    hmmm, any chance of a minimal repro? Defo worked this end yesterday
  • h
    I sort assumed that it must be possible to custom right your own ds but I don't know how - would be interested
  • h
    I'll mess with it a bit and see if I can get a repro case. I don't understand I guess how the ds should be initialized
  • h
    maybe my xml is off
  • b
    well, if you are using xml, then automatically your data source will be dynamic... i keep meaning to add something like 
    <data class="foo.MyClass">
  • b
    ill have a look at adding that this eve too, shouldnt be hard i dont think - few lines in the macro i think
  • h
    oh
  • h
    so hang on
  • b
    but, just so you understand, all the macro does, essentially, is go: 
    myTable.dataSource = new ArrayDataSource<Dynamic>
  • h
    I need to add an explicit data element attribute identifying the data class ?
  • b
    well, 
    <data class="foo.MyClass">
    doesnt exist (the 
    class
    attribute anyway)
  • b
    but i keep meaning to add it
  • b
    so that the macro will generate: 
    myTable.dataSource = new ArrayDataSource<foo.MyClass>
  • h
    oh - so I need to do it manually somewhere in my Haxe code then ? I mean for now ?
  • b
    (which it doesnt currently, its always Dynamic)
  • b
    yeah, exactly
  • h
    yeah I noticed - which makes it hard to use
  • h
    ok - so I was missing that
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