Tab:clear() method
Remove all items from the Tab.
Return value
This function returns no value.Example
local ui = require "ui"
-- create a simple Window
local win = ui.Window("Tab.count sample", "fixed", 580, 240)
local label = ui.Label(win, "New item :", 10, 15)
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 tab = ui.Tab(win, {}, button.x+button.width+6, label.y-6)
local clearbtn = ui.Button(win, "Clear all", tab.x+tab.width+4, label.y-4)
clearbtn.enabled = false
function button:onClick()
-- add new item in the Tab adn select it
tab.selected = tab:add(entry.text)
entry.text = ""
clearbtn.enabled = true
win:status("Tab.count = "..tab.count)
end
function clearbtn:onClick()
tab:clear()
self.enabled = false
end
-- enable button only if entry.text is not empty
function entry:onChange()
button.enabled = #entry.text > 0
end
entry.onSelect = button.onClick
entry:onChange()
win:status("Tab.count = 0")
win:show()
-- update user interface
repeat
ui.update()
until not win.visible