TreeItem.previous readonly property
Retrieves the previous sibling item before the TreeItem
nil if there is none.
Example
local ui = require "ui"
-- create a fixed Window
local win = ui.Window("TreeItem.previous sample", 320, 220)
local tree = ui.Tree(win, {"TreeItem1", "TreeItem2", "TreeItem3"}, 60, 40, 200, 160)
tree.selected = tree.items["TreeItem1"]
tree.selected.subitems = {"SubItem1", "SubItem2"}
ui.Button(win, "Next", 76, 10).onClick = function (self)
local next = tree.selected.next
if next then
tree.selected = next
end
end
ui.Button(win, "Previous", 156, 10).onClick = function (self)
local prev = tree.selected.previous
if prev then
tree.selected = prev
end
end
ui.run(win):wait()