wrap widget in a function

1 files changed, 111 insertions, 100 deletions

diff --git a/mpris-widget/init.lua b/mpris-widget/init.lua
index e18edf5..370957d 100644
--- a/mpris-widget/init.lua
+++ b/mpris-widget/init.lua
@@ -3,7 +3,7 @@
 -- Modelled after Pavel Makhov's work
 -- @author Mohammed Gaber
 -- requires - playerctl
--- @copyright 2020 
+-- @copyright 2020
 -------------------------------------------------
 local awful = require("awful")
 local beautiful = require("beautiful")
@@ -19,7 +19,7 @@ local TOGGLE_MPD_CMD = "playerctl play-pause"
 local PAUSE_MPD_CMD = "playerctl pause"
 local STOP_MPD_CMD = "playerctl stop"
 local NEXT_MPD_CMD = "playerctl next"
-local PREV_MPD_CMD = "playerctl prev"
+local PREV_MPD_CMD = "playerctl previous"
 
 local PATH_TO_ICONS = "/usr/share/icons/Arc"
 local PAUSE_ICON_NAME = PATH_TO_ICONS .. "/actions/24/player_pause.png"
@@ -27,110 +27,121 @@ local PLAY_ICON_NAME = PATH_TO_ICONS .. "/actions/24/player_play.png"
 local STOP_ICON_NAME = PATH_TO_ICONS .. "/actions/24/player_stop.png"
 local LIBRARY_ICON_NAME = PATH_TO_ICONS .. "/actions/24/music-library.png"
 
--- retriving song info
-current_song, artist = nil, nil
-
-local icon = wibox.widget {
-    id = "icon",
-    widget = wibox.widget.imagebox,
-    image = PLAY_ICON_NAME
-}
-local mirrored_icon = wibox.container.mirror(icon, {horizontal = true})
-
-local mpdarc = wibox.widget {
-    mirrored_icon,
-    -- max_value = 1,
-    -- value = 0,
-    thickness = 2,
-    start_angle = 4.71238898, -- 2pi*3/4
-    forced_height = 24,
-    forced_width = 24,
-    rounded_edge = true,
-    bg = "#ffffff11",
-    paddings = 0,
-    widget = wibox.container.arcchart
-}
-
-local mpdarc_icon_widget = wibox.container.mirror(mpdarc, {horizontal = true})
-local mpdarc_current_song_widget = wibox.widget {
-    id = 'current_song',
-    widget = wibox.widget.textbox,
-    font = 'Play 10'
-}
-
-local update_graphic = function(widget, stdout, _, _, _)
-    mpdstatus, artist, current_song = stdout:match("(%w+)%;+(.-)%;(.*)")
-    if current_song ~= nil then
-        if current_song.len == 18 then
-            current_song = string.sub(current_song, 0, 9) .. ".."
+
+local mpdarc_widget = {}
+
+local function worker(args)
+
+    -- retriving song info
+    local current_song, artist, mpdstatus
+
+    local icon = wibox.widget {
+        id = "icon",
+        widget = wibox.widget.imagebox,
+        image = PLAY_ICON_NAME
+    }
+    local mirrored_icon = wibox.container.mirror(icon, {horizontal = true})
+
+    local mpdarc = wibox.widget {
+        mirrored_icon,
+        -- max_value = 1,
+        -- value = 0,
+        thickness = 2,
+        start_angle = 4.71238898, -- 2pi*3/4
+        forced_height = 24,
+        forced_width = 24,
+        rounded_edge = true,
+        bg = "#ffffff11",
+        paddings = 0,
+        widget = wibox.container.arcchart
+    }
+
+    local mpdarc_icon_widget = wibox.container.mirror(mpdarc, {horizontal = true})
+    local mpdarc_current_song_widget = wibox.widget {
+        id = 'current_song',
+        widget = wibox.widget.textbox,
+        font = 'Play 10'
+    }
+
+    local update_graphic = function(widget, stdout, _, _, _)
+        mpdstatus, artist, current_song = stdout:match("(%w+)%;+(.-)%;(.*)")
+        if current_song ~= nil then
+            if current_song.len == 18 then
+                current_song = string.sub(current_song, 0, 9) .. ".."
+            end
         end
-    end
 
-    if mpdstatus == "Playing" then
-        mpdarc_icon_widget.visible = true
-        icon.image = PLAY_ICON_NAME
-        widget.colors = {beautiful.widget_main_color}
-        mpdarc_current_song_widget.markup = current_song
-    elseif mpdstatus == "Paused" then
-        mpdarc_icon_widget.visible = true
-        icon.image = PAUSE_ICON_NAME
-        widget.colors = {beautiful.widget_main_color}
-        mpdarc_current_song_widget.markup = current_song
-    elseif mpdstatus == "Stopped" then
-        mpdarc_icon_widget.visible = true
-        icon.image = STOP_ICON_NAME
-        mpdarc_current_song_widget.markup = ""
-    else -- no player is running
-        icon.image = LIBRARY_ICON_NAME
-        mpdarc_icon_widget.visible = false
-        mpdarc_current_song_widget.markup = ""
-        widget.colors = {beautiful.widget_red}
+        if mpdstatus == "Playing" then
+            mpdarc_icon_widget.visible = true
+            icon.image = PLAY_ICON_NAME
+            widget.colors = {beautiful.widget_main_color}
+            mpdarc_current_song_widget.markup = current_song
+        elseif mpdstatus == "Paused" then
+            mpdarc_icon_widget.visible = true
+            icon.image = PAUSE_ICON_NAME
+            widget.colors = {beautiful.widget_main_color}
+            mpdarc_current_song_widget.markup = current_song
+        elseif mpdstatus == "Stopped" then
+            mpdarc_icon_widget.visible = true
+            icon.image = STOP_ICON_NAME
+            mpdarc_current_song_widget.markup = ""
+        else -- no player is running
+            icon.image = LIBRARY_ICON_NAME
+            mpdarc_icon_widget.visible = false
+            mpdarc_current_song_widget.markup = ""
+            widget.colors = {beautiful.widget_red}
+        end
     end
-end
 
-mpdarc:connect_signal("button::press", function(_, _, _, button)
-    if (button == 1) then
-        awful.spawn(TOGGLE_MPD_CMD, false) -- left click
-    elseif (button == 2) then
-        awful.spawn(STOP_MPD_CMD, false)
-    elseif (button == 3) then
-        awful.spawn(PAUSE_MPD_CMD, false)
-    elseif (button == 4) then
-        awful.spawn(NEXT_MPD_CMD, false) -- scroll up
-    elseif (button == 5) then
-        awful.spawn(PREV_MPD_CMD, false) -- scroll down
-    end
+    mpdarc:connect_signal("button::press", function(_, _, _, button)
+        if (button == 1) then
+            awful.spawn(TOGGLE_MPD_CMD, false) -- left click
+        elseif (button == 2) then
+            awful.spawn(STOP_MPD_CMD, false)
+        elseif (button == 3) then
+            awful.spawn(PAUSE_MPD_CMD, false)
+        elseif (button == 4) then
+            awful.spawn(NEXT_MPD_CMD, false) -- scroll up
+        elseif (button == 5) then
+            awful.spawn(PREV_MPD_CMD, false) -- scroll down
+        end
 
-    spawn.easy_async(GET_MPD_CMD, function(stdout, stderr, exitreason, exitcode)
-        update_graphic(mpdarc, stdout, stderr, exitreason, exitcode)
+        spawn.easy_async(GET_MPD_CMD, function(stdout, stderr, exitreason, exitcode)
+            update_graphic(mpdarc, stdout, stderr, exitreason, exitcode)
+        end)
     end)
-end)
-
-local notification
-function show_MPD_status()
-    spawn.easy_async(GET_MPD_CMD, function(stdout, _, _, _)
-        notification = naughty.notify {
-            text = current_song .. " by " .. artist,
-            title = mpdstatus,
-            timeout = 5,
-            hover_timeout = 0.5,
-            width = 600
-        }
+
+    local notification
+    local function show_MPD_status()
+        spawn.easy_async(GET_MPD_CMD, function(stdout, _, _, _)
+            notification = naughty.notify {
+                text = current_song .. " by " .. artist,
+                title = mpdstatus,
+                timeout = 5,
+                hover_timeout = 0.5,
+                width = 600
+            }
+        end)
+    end
+
+    mpdarc:connect_signal("mouse::enter", function()
+        if current_song ~= nil and artist ~= nil then show_MPD_status() end
     end)
+    mpdarc:connect_signal("mouse::leave",
+                        function() naughty.destroy(notification) end)
+
+    watch(GET_MPD_CMD, 1, update_graphic, mpdarc)
+
+    mpdarc_widget = wibox.widget {
+        screen = 'primary',
+        mpdarc_icon_widget,
+        mpdarc_current_song_widget,
+        layout = wibox.layout.align.horizontal
+    }
+    return mpdarc_widget
+
 end
 
-mpdarc:connect_signal("mouse::enter", function()
-    if current_song ~= nil and artist ~= nil then show_MPD_status() end
-end)
-mpdarc:connect_signal("mouse::leave",
-                      function() naughty.destroy(notification) end)
-
-watch(GET_MPD_CMD, 1, update_graphic, mpdarc)
-
-local mpdarc_widget = wibox.widget {
-    screen = 'primary',
-    mpdarc_icon_widget,
-    mpdarc_current_song_widget,
-    layout = wibox.layout.align.horizontal
-}
-return mpdarc_widget
+return setmetatable(mpdarc_widget, { __call = function(_, ...)
+    return worker(...)
+end })
\ No newline at end of file