Tree:add(itemtext1 [, itemtext2...]) method
Add one or more root items to the Tree.
itemtext1 [, itemtext2...]
One or more strings representing the text of the new Tree items.These items can later be accessed using the Tree.items property, as TreeItems objects.
Return value
This function returns the last added TreeItemExample
local ui = require "ui"
-- create a simple Window
local win = ui.Window("Tree:add() sample", "fixed", 340, 200)
local label = ui.Label(win, "New item :", 10, 30)
local entry = ui.Entry(win, "", label.x+label.width+6, label.y-4)
local button = ui.Button(win, "Add item", entry.x+entry.width+6, label.y-6)
local tree = ui.Tree(win, {}, button.x+button.width+6, label.y-4)
button.enabled = false
function button:onClick()
-- add new item in the Tree and select it
tree.selected = tree:add(entry.text)
entry.text = ""
end
-- enable button only if entry.text is not empty
function entry:onChange()
button.enabled = #entry.text > 0
end
entry.onSelect = button.onClick
win:show()
-- update user interface
repeat
ui.update()
until not win.visible