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return function(parent, dir)
local lgi = require 'lgi'
local GLib = lgi.GLib
local Gtk = lgi.Gtk
local assistant = Gtk.Assistant {
default_height = 300,
{
title = "Page 1", type = 'INTRO',
Gtk.Grid {
id = 'page1',
orientation = 'HORIZONTAL',
Gtk.Label { label = "You must fill out this entry to continue:" },
Gtk.Entry {
vexpand = true,
id = 'entry',
activates_default = true,
},
},
},
{
title = "Page 2", complete = true,
Gtk.Grid {
orientation = 'VERTICAL',
Gtk.CheckButton { label = "This is optional data, you may continue " ..
"even if you do not check this" }
},
},
{
title = "Confirmation", type = 'CONFIRM', complete = true,
Gtk.Label { label = "This is a confirmation page, press 'Apply' " ..
"to apply changes" },
},
{
title = "Applying changes", type = 'PROGRESS',
Gtk.ProgressBar { id = 'progressbar',
halign = 'CENTER', valign = 'CENTER' },
},
}
function assistant.child.entry:on_changed()
assistant.property.page1.complete = (self.text ~= '')
end
function assistant:on_cancel() self:destroy() end
function assistant:on_close() self:destroy() end
function assistant:on_prepare()
self.title = ("Sample assistant (%d of %d)"):format(
self:get_current_page() + 1, self:get_n_pages())
if self:get_current_page() == 3 then
-- The changes are permanent and cannot be revisited.
assistant:commit()
end
end
local progressbar = assistant.child.progressbar
function assistant:on_apply()
GLib.timeout_add(GLib.PRIORITY_DEFAULT, 100,
function()
-- Simulate work.
local fraction = progressbar.fraction + 0.05
if fraction < 1 then
progressbar.fraction = fraction
return true
else
assistant:destroy()
return false
end
end)
end
assistant.child.page1:show_all()
--assistant:set_screen(parent:get_screen())
assistant:show_all()
return assistant
end,
"Assistant",
table.concat {
"Demonstrates a sample multi-step assistant.\n",
"Assistants are used to divide an operation into several simpler ",
"sequential steps, and to guide the user through these steps."
}
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