[Laszlo-user] <gridtext> to create an element?

[André Bargull]

Hi Jesse,

I guess the far most easiest way to achieve this, is to change your 
local gridtext-component (in "lps/components/lz/gridtext.lzx").
You only need to override the "updateData()"-method in the gridtext's 
editbox and handle in that place your node-creation code.
For instance like that:
> @@ -106,6 +106,15 @@
>                          this.globalMouseDel = new LzDelegate( this,
>                                                                
> "checkMouse" );
>                          super.init();
> +                    </method>
> +                    <method name="updateData" >
> +                        var ret = super.updateData();
> +                        
> +                        if (this.datapath.p == null) {
> +                            
> this.datapath.context.addNode("description", ret);//for a 
> "description/text()" datapath
> +                        }
> +                        
> +                        return ret;
>                      </method>
>                      <method name="applyData" args="d">
>                          //because of the monkeying with init that this


> Hello,
>
>   In a databound grid, I want to use a <gridtext> for an "optional" node
> in the dataset; ie. the gridtext datapath ("Description/text()") may not
> match anything, and that's ok.  It works fine if there is a match, but
> if there isn't for that row, I'd like to be able to create a node (the
> Description) when text is entered.  Any clues how that can be done?
>
>   Further info: in that case, when there's no matching node, trying to
> enter text prints the error "setNodeText: p is null in Datapath ...".
> I've tried doEnterDown() and various events to try to catch that and
> create a node, but they don't "fire," I think due to that error.  I'm
> using 4.0.11.
>
> -- 
> Jesse Norell
> Kentec Communications, Inc.
> jesse at kci.net <http://www.openlaszlo.org/mailman/listinfo/laszlo-user>