Re: (Unofficial) FilteringTable enhancements

> While I await the new Dojo CLA text I am making the following
> unofficial enhancements to the FilteringTable available.  I have seen
> several cases in the list recently that would have benfited from these
> capabilities.
>
> Attached are three patches that cover two enhancements to FilteringTable.
> The two enehancements are:
>
> 1) Distinct rendering functionality.
> ====================================
> This allows for the specification of a function that provides rendering of
> the column's value in a way analogous to the 'sortUsing/sortFunction'
> capability.  Thus a Number like '100.0' which currently can only be rendered
> as '100' could be rendered as '100.00' in blue text as a link and still be
> sortable by the table since it is still represented as a Number in the data
> store.
>
> In a similar vein, a boolean value could be represented as a CheckBox
> with the 'selected' attribute set according to the current value of the
> data.  Thus by updating the value in the data store, the checkbox will
> change accordingly.
>
> The render function is called as:
>    function(cell, meta, val, src)
> where:
>    cell is the <TD> element for the current value
>    meta is the column description data (aka table.columns[index])
>    val is the actual value from the data store
>    src is the original JSON data (or parsed HTML data) for the row
>
> The presence of 'src' allows for rendering based on other values in the row.
>
> The return value of the function is a string suitable for insertion as the
> 'innerHTML' value of the cell.
>
> To specify the render function use either the HTML tag method:
>
>    <TH .... renderUsing="myRenderFunc" ...>...</TH>
>
> or the programmatic method in the column spec:
>
>    var myColumn = {
>       ....
>       renderFunction: myRenderFunc,
>       ....
>    };
>    table.columns.push(table.createMetaData(myColumn));
>
>
> 2) Benign handling of 'null' data.
> ==================================
> This patch allows for null values to be treated as minimal values in a sort
> and also to have them displayed as empty cells by the default rendering
> engine.
>
> Thus a Date column with a null value will not display as "01/01/70" or
> "NaN/NaN/NaN".  Instead it will display as an empty cell.
>
> In an ascending sort all null values will be at the top of the cloumn.
> Similarly, for a descending sort all null values will be at the bottom.
>
> Contents
> ========
> The attached zip file provides patches and source files for the two
> functionalities distinctly and combined.  These patches and files are
> relative to the 0.4.1 release.
>
> A patch for the nightly builds can be provided as needed/requested.
>
> Hope this helps others as much as it has helped me.
>
> Ross.
>
> Attachment:  http://www.nabble.com/file/5673/FilteringTable.zip
> FilteringTable.zip