[Laszlo-user] Extending a base component

[Cary Clark]

Hey Dave, try this simple addition:

<canvas>
    <include href="base/basegridrow.lzx"/>

    <class name="mygridrow" extends="basegridrow"/>
    <dataset name="weatherdata" request="true" 
src="http://www.laszlosystems.com/cgi-pub/weather.cgi?zip=73003"/>
    <grid datapath="weatherdata:/weather" contentdatapath="forecast/day" 
_rowclass="mygridrow"/>
</canvas>

I added that and it compiled....doesn't seem to print the double click 
message, but it compiles.

Cary


Dave Miller wrote:
> When I needed to add some functionality to a grid row, instead of 
> editing basegridrow.lzx, I extended the class like so:
>
> <class name="mygridrow" extends="basegridrow" >
>     <handler name="ondblclick" >
>         Debug.write("2xclick");
>     </handler>
> </class>
>
> <grid _rowclass="mygridrow" datapath=...
>
>
>
> This worked fine in 4.0.7. When I recently upgraded to 4.0.12 this 
> broke. I got the compilation error:
>
> base/basegridrow.lzx:4:55: undefined superclass basecomponent for 
> class basegridrow
>
>
> I understand how my locally declared class might not see the new super 
> class 'basecomponent', but was this an intentional change? Or a bug?
>
> Test script below.
>
> Thanks,
>
> Dave
>
>
> Works in 4.0.7. Errors in 4.0.12
>
> <canvas>
>     <class name="mygridrow" extends="basegridrow"/>
>     <dataset name="weatherdata" request="true" 
> src="http://www.laszlosystems.com/cgi-pub/weather.cgi?zip=10022"/>
>     <grid datapath="weatherdata:/weather" 
> contentdatapath="forecast/day" _rowclass="mygridrow"/>
> </canvas>
>