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-------------------------------------------------
-- Docker Widget for Awesome Window Manager
-- Lists containers and allows to manage them
-- More details could be found here:
-- https://github.com/streetturtle/awesome-wm-widgets/tree/master/docker-widget
-- @author Pavel Makhov
-- @copyright 2020 Pavel Makhov
-------------------------------------------------
local awful = require("awful")
local wibox = require("wibox")
local spawn = require("awful.spawn")
local naughty = require("naughty")
local gears = require("gears")
local beautiful = require("beautiful")
local HOME_DIR = os.getenv("HOME")
local WIDGET_DIR = HOME_DIR .. '/.config/awesome/awesome-wm-widgets/docker-widget'
local ICONS_DIR = WIDGET_DIR .. '/icons/'
local LIST_CONTAINERS_CMD = [[bash -c "docker container ls -a -s -n %s --format '{{.Names}}::{{.ID}}::{{.Image}}::{{.Status}}::{{.Size}}'"]]
--- Utility function to show warning messages
local function show_warning(message)
naughty.notify{
preset = naughty.config.presets.critical,
title = 'Docker Widget',
text = message}
end
local popup = awful.popup{
ontop = true,
visible = false,
shape = gears.shape.rounded_rect,
border_width = 1,
border_color = beautiful.bg_focus,
maximum_width = 400,
offset = { y = 5 },
widget = {}
}
local docker_widget = wibox.widget {
{
{
id = 'icon',
widget = wibox.widget.imagebox
},
margins = 4,
layout = wibox.container.margin
},
layout = wibox.layout.fixed.horizontal,
set_icon = function(self, new_icon)
self:get_children_by_id("icon")[1].image = new_icon
end
}
local parse_container = function(line)
local name, id, image, status, how_long, size = line:match('(.*)::(.*)::(.*)::(%w*) (.*)::(.*)')
local actual_status
if status == 'Up' and how_long:find('Paused') then actual_status = 'Paused'
else actual_status = status end
how_long = how_long:gsub('%s?%(.*%)%s?', '')
-- if how_long:find('seconds') then how_long = 'less than a minute ago' end
local container = {
name = name,
id = id,
image = image,
status = actual_status,
how_long = how_long,
size = size,
is_up = function() return status == 'Up' end,
is_paused = function() return actual_status:find('Paused') end,
is_exited = function() return status == 'Exited' end
}
return container
end
local status_to_icon_name = {
Up = ICONS_DIR .. 'play.svg',
Exited = ICONS_DIR .. 'square.svg',
Paused = ICONS_DIR .. 'pause.svg'
}
local function worker(args)
local args = args or {}
local icon = args.icon or ICONS_DIR .. 'docker.svg'
local number_of_containers = args.number_of_containers or -1
docker_widget:set_icon(icon)
local rows = {
{ widget = wibox.widget.textbox },
layout = wibox.layout.fixed.vertical,
}
local function rebuild_widget(stdout, stderr, _, _)
if stderr ~= '' then
show_warning(stderr)
return
end
for i = 0, #rows do rows[i]=nil end
for line in stdout:gmatch("[^\r\n]+") do
local container = parse_container(line)
local status_icon = wibox.widget {
image = status_to_icon_name[container['status']],
resize = false,
widget = wibox.widget.imagebox
}
local start_stop_button
if container.is_up() or container.is_exited() then
start_stop_button = wibox.widget {
{
id = 'icon',
image = ICONS_DIR .. (container:is_up() and 'stop-btn.svg' or 'play-btn.svg'),
opacity = 0.4,
resize = false,
widget = wibox.widget.imagebox
},
left = 2,
right = 2,
layout = wibox.container.margin
}
start_stop_button:connect_signal("mouse::enter", function(c)
c:get_children_by_id("icon")[1]:set_opacity(1)
c:get_children_by_id("icon")[1]:emit_signal('widget::redraw_needed') end)
start_stop_button:connect_signal("mouse::leave", function(c)
c:get_children_by_id("icon")[1]:set_opacity(0.4)
c:get_children_by_id("icon")[1]:emit_signal('widget::redraw_needed')
end)
start_stop_button:buttons(
awful.util.table.join( awful.button({}, 1, function()
local command
if container:is_up() then command = 'stop' else command = 'start' end
status_icon:set_opacity(0.2)
status_icon:emit_signal('widget::redraw_needed')
awful.spawn.easy_async('docker ' .. command .. ' ' .. container['name'], function(stdout, stderr)
if stderr ~= '' then show_warning(stderr) end
spawn.easy_async(string.format(LIST_CONTAINERS_CMD, number_of_containers), function(stdout, stderr)
rebuild_widget(stdout, stderr) end)
end)
end) ) )
else
start_stop_button = nil
end
local pause_unpause_button
if container.is_up() then
pause_unpause_button = wibox.widget {
{
id = 'icon',
image = ICONS_DIR .. (container:is_paused() and 'unpause-btn.svg' or 'pause-btn.svg'),
opacity = 0.4,
resize = false,
widget = wibox.widget.imagebox
},
left = 2,
right = 2,
layout = wibox.container.margin
}
pause_unpause_button:connect_signal("mouse::enter", function(c)
c:get_children_by_id("icon")[1]:set_opacity(1)
c:get_children_by_id("icon")[1]:emit_signal('widget::redraw_needed')
end)
pause_unpause_button:connect_signal("mouse::leave", function(c)
c:get_children_by_id("icon")[1]:set_opacity(0.4)
c:get_children_by_id("icon")[1]:emit_signal('widget::redraw_needed')
end)
pause_unpause_button:buttons(
awful.util.table.join( awful.button({}, 1, function()
local command
if container:is_paused() then command = 'unpause' else command = 'pause' end
status_icon:set_opacity(0.2)
status_icon:emit_signal('widget::redraw_needed')
awful.spawn.easy_async('docker ' .. command .. ' ' .. container['name'], function(stdout, stderr)
if stderr ~= '' then show_warning(stderr) end
spawn.easy_async(string.format(LIST_CONTAINERS_CMD, number_of_containers), function(stdout, stderr)
rebuild_widget(stdout, stderr) end)
end)
end) ) )
else
pause_unpause_button = nil
end
local row = wibox.widget {
{
{
{
{
status_icon,
margins = 8,
layout = wibox.container.margin
},
valigh = 'center',
layout = wibox.container.place
},
{
{
{
markup = '<b>' .. container['name'] .. '</b>',
widget = wibox.widget.textbox
},
{
text = container['size'],
widget = wibox.widget.textbox
},
{
text = container['how_long'],
widget = wibox.widget.textbox
},
forced_width = 180,
layout = wibox.layout.fixed.vertical
},
valigh = 'center',
layout = wibox.container.place
},
{
{
start_stop_button,
pause_unpause_button,
layout = wibox.layout.align.horizontal
},
forced_width = 60,
valign = 'center',
haligh = 'center',
layout = wibox.container.place,
},
spacing = 8,
layout = wibox.layout.align.horizontal
},
margins = 8,
layout = wibox.container.margin
},
bg = beautiful.bg_normal,
widget = wibox.container.background
}
row:connect_signal("mouse::enter", function(c) c:set_bg(beautiful.bg_focus) end)
row:connect_signal("mouse::leave", function(c) c:set_bg(beautiful.bg_normal) end)
table.insert(rows, row)
end
popup:setup(rows)
end
docker_widget:buttons(
awful.util.table.join(
awful.button({}, 1, function()
if popup.visible then
popup.visible = not popup.visible
else
spawn.easy_async(string.format(LIST_CONTAINERS_CMD, number_of_containers), function(stdout, stderr)
rebuild_widget(stdout, stderr)
popup:move_next_to(mouse.current_widget_geometry)
end)
end
end)
)
)
return docker_widget
end
return setmetatable(docker_widget, { __call = function(_, ...) return worker(...) end })
|
