data ListRequest a = ReplaceItems Int Int [a] | HighlightItems [Int] | PickItem Int replaceAll :: [a] -> ListRequest a replaceAllFrom :: Int -> [a] -> ListRequest a deleteItems :: Int -> Int -> ListRequest a insertItems :: Int -> [a] -> ListRequest a appendItems :: [a] -> ListRequest a changeItems :: Int -> [a] -> ListRequest a replaceItems :: Int -> Int -> [a] -> ListRequest a highlightItems :: [Int] -> ListRequest a pickItem :: Int -> ListRequest a applyListRequest :: ListRequest a -> [a] -> [a]
ListRequest is the type of messages accepted by fudgets that display lists, e.g.,
textF and pickListF. the displayed list
can be modified by ListRequest messages.
replaceAll list replaces all the list with a new list.
replaceAllFrom from items replaces all items from position
from with items. The first item is has position 0.
deleteItems from count deletes count items starting at
position from.
insertItems at items inserts items before position at.
appendText items appends items after the last item of the
old list.
changeItems at items replaces the same number of items at position
at as there are items in items with items. If
at is so close to the end that there isn't enough items to
replace, the rest of items are appended.
replaceItems from to text replaces the items between and
including positions from and to with items.
highlightText positions will highlight all items included in
positions, and dehighlight the rest.
pickText at is used to simulate that the user has clicked on
the item at position at.
applyListRequest request list returns the result of performing
request on list.
ListRequest should be an abstract type.
