Filtering and Highlighting Lists and DataGrids

I've written a FilterBox control that filters the data inside List and DataGrid components, and another one that highlights items.

See the example below for filtering and highlighting a List. I've included a few extra item renderers for showing checkboxes, and for highlighting DataGrid columns.
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There are some limitations, such as it only highlights the first occurrence of the text. And I probably could have used data binding instead of passing in a function to the TextHighlighter, but hey - it's a work in progress.

If you use the FilterBox control, you might notice that it depends on a ButtonBox component. This is my implementation of a CheckBoxList, which has the same basic functionality as a List, but maps each data item in the list to a CheckBox, and doesn't re-use item renderers the way Lists do. This way you don't have to have a selectedField property in your data. I've noticed that the ButtonBox control doesn't scale very well if you have more than a few hundred items in the list.