Merge pull request #388 from jarrowsm/pacman-widget

pacman-widget

7 files changed, 523 insertions, 0 deletions

diff --git a/pacman-widget/README.md b/pacman-widget/README.md
new file mode 100644
index 0000000..f9c4325
--- /dev/null
+++ b/pacman-widget/README.md
@@ -0,0 +1,37 @@
+# Pacman widget for AwesomeWM
+
+This widget displays the number of upgradable Pacman packages. Clicking the icon reveals a scrollable list of available upgrades. A full system upgrade can be performed from the widget via Polkit.
+
+![](screenshots/pacman.gif)
+
+## Requirements
+`lxpolkit` is the default [Polkit agent](https://wiki.archlinux.org/title/Polkit).
+
+The widget also uses the `checkupdates` script from the `pacman-contrib` package.
+
+
+## Installation
+
+Clone the repo under **~/.config/awesome/** and add the following to **rc.lua**:
+
+```lua
+local pacman_widget = require('pacman-widget.pacman')
+...
+s.mytasklist, -- Middle widget
+	{ -- Right widgets
+    	layout = wibox.layout.fixed.horizontal,
+        ...
+        -- default
+        pacman_widget(),
+        -- custom (shown with defaults)
+        pacman_widget {
+            interval = 600,	-- Refresh every 10 minutes
+            popup_bg_color = '#222222',
+            popup_border_width = 1,
+            popup_border_color = '#7e7e7e',
+            popup_height = 10,	-- 10 packages shown in scrollable window
+            popup_width = 300,
+            polkit_agent_path = '/usr/bin/lxpolkit'
+        },
+```
+
diff --git a/pacman-widget/icons/pacman-full.svg b/pacman-widget/icons/pacman-full.svg
new file mode 100644
index 0000000..50bb939
--- /dev/null
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diff --git a/pacman-widget/icons/pacman.svg b/pacman-widget/icons/pacman.svg
new file mode 100644
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diff --git a/pacman-widget/icons/upgrade.svg b/pacman-widget/icons/upgrade.svg
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diff --git a/pacman-widget/pacman.lua b/pacman-widget/pacman.lua
new file mode 100644
index 0000000..3f6a930
--- /dev/null
+++ b/pacman-widget/pacman.lua
@@ -0,0 +1,256 @@
+local naughty = require("naughty")
+local wibox = require("wibox")
+local awful = require("awful")
+local beautiful = require("beautiful")
+local gears = require("gears")
+
+local DIR = os.getenv("HOME") .. "/.config/awesome/pacman-widget/"
+local ICON_DIR = DIR .. "icons/"
+
+local pacman_widget = {}
+local config, timer = {}, {}
+
+config.interval = 600
+config.popup_bg_color = "#222222"
+config.popup_border_width = 1
+config.popup_border_color = "#7e7e7e"
+config.popup_height = 10
+config.popup_width = 300
+config.polkit_agent_path = "/usr/bin/lxpolkit"
+
+local function worker(user_args)
+    local args, _config = user_args or {}, {}
+    for prop, value in pairs(config) do
+        _config[prop] = args[prop] or beautiful[prop] or value
+    end
+
+    awful.spawn.once(_config.polkit_agent_path)
+
+    pacman_widget = wibox.widget {
+        {
+            {
+                id = "icon",
+                resize = false,
+                widget = wibox.widget.imagebox,
+            },
+            valign = "center",
+            layout = wibox.container.place,
+        },
+        {
+            id = "txt",
+            font = args.font,
+            widget = wibox.widget.textbox
+        },
+        spacing = 5,
+        layout = wibox.layout.fixed.horizontal,
+    }
+    function pacman_widget.set(new_value)
+        pacman_widget:get_children_by_id("txt")[1]:set_text(new_value)
+        pacman_widget:get_children_by_id("icon")[1]:set_image(
+            ICON_DIR .. (tonumber(new_value) > 0 and "pacman" or "pacman-full") .. ".svg"
+        )
+    end
+
+    local rows, ptr = wibox.layout.fixed.vertical(), 0
+    rows:connect_signal("button::press", function(_,_,_,button)
+          if button == 4 then
+              if ptr > 0 then
+                  rows.children[ptr].visible = true
+                  ptr = ptr - 1
+              end
+          elseif button == 5 then
+              if ptr < #rows.children and ((#rows.children - ptr) > _config.popup_height) then
+                  ptr = ptr + 1
+                  rows.children[ptr].visible = false
+              end
+          end
+       end)
+
+    local popup = awful.popup {
+        border_width = _config.popup_border_width,
+        border_color = _config.popup_border_color,
+        shape = gears.shape.rounded_rect,
+        visible = false,
+        ontop = true,
+        offset = { y = 5 },
+        widget = {}
+    }
+
+    pacman_widget:buttons(
+        awful.util.table.join(
+            awful.button({}, 1, function()
+                if popup.visible then
+                    popup.visible = false
+                else
+                    popup.visible = true
+                    popup:move_next_to(_G.mouse.current_widget_geometry)
+                end
+            end)
+        )
+    )
+
+    local upgr_opacity = 0.6
+    local upgr_btn = wibox.widget {
+        {
+            image = ICON_DIR .. "upgrade.svg",
+            resize = false,
+            layout = wibox.widget.imagebox
+        },
+        opacity = upgr_opacity,
+        layout = wibox.container.background
+    }
+
+    local old_cursor, old_wibox
+    local busy, upgrading = false, false
+    upgr_btn:connect_signal("mouse::enter", function(c)
+        if not busy then
+            c:set_opacity(1)
+            c:emit_signal("widget::redraw_needed")
+            local wb = _G.mouse.current_wibox
+            old_cursor, old_wibox = wb.cursor, wb
+            wb.cursor = "hand2"
+        end
+    end)
+    upgr_btn:connect_signal("mouse::leave", function(c)
+        if not busy then
+            c:set_opacity(upgr_opacity)
+            c:emit_signal("widget::redraw_needed")
+            if old_wibox then
+                old_wibox.cursor = old_cursor
+                old_wibox = nil
+            end
+        end
+    end)
+    upgr_btn:connect_signal("button::press", function(c)
+        c:set_opacity(1)
+        c:emit_signal("widget::redraw_needed")
+        if old_wibox then
+            old_wibox.cursor = old_cursor
+            old_wibox = nil
+        end
+        if not busy then
+            busy = true
+            local one_shot = true
+            awful.spawn.with_line_callback("bash -c " .. DIR .. "upgrade", {
+                stdout = function()
+                    if one_shot then
+                        upgrading, one_shot = true, false
+                        timer:emit_signal("timeout")
+                    end
+                end,
+                stderr = function(line)
+                    if (line ~= nil and line ~= "") then
+                        if string.find(line, "warning") then
+                            naughty.notify({
+                                title = "Warning!",
+                                text = line,
+                                timeout = 0
+                                })
+                        else
+                            naughty.notify({
+                                preset = naughty.config.presets.critical,
+                                title = "Error!",
+                                text = line,
+                            })
+                        end
+                    end
+                end,
+                exit = function()
+                    upgrading, busy = false, false
+                    c:set_opacity(upgr_opacity)
+                    c:emit_signal("widget::redraw_needed")
+                    timer:emit_signal("timeout")
+                end,
+            })
+        end
+    end)
+
+    timer = select(2, awful.widget.watch([[bash -c "checkupdates 2>/dev/null"]],
+        _config.interval,
+        function(widget, stdout)
+            local upgrades_tbl = {}
+            for value in stdout:gmatch("([^\n]+)") do
+                upgrades_tbl[#upgrades_tbl+1] = value
+            end
+            widget.set(#upgrades_tbl)
+
+            local popup_header_height, popup_row_height = 30, 20
+            local header = wibox.widget {
+                {
+                    nil,
+                    {
+                        markup = "<b>" .. (upgrading and "Upgrading " .. #upgrades_tbl .. " Packages" or
+                            (#upgrades_tbl == 0 and "No" or #upgrades_tbl) .. " Available Upgrades") .. "</b>",
+                        layout = wibox.widget.textbox,
+                    },
+                    #upgrades_tbl > 0 and {
+                        upgr_btn,
+                        valign = "center",
+                        layout = wibox.container.place,
+                    },
+                    expand = "none",
+                    layout = wibox.layout.align.horizontal,
+                },
+                forced_height = popup_header_height,
+                left = 20,
+                right = 20,
+                layout = wibox.container.margin
+            }
+
+            for k, v in ipairs(upgrades_tbl) do
+                for i = 1, #rows.children do
+                    if v == rows.children[i].get_txt() then goto continue end
+                end
+                local row = wibox.widget{
+                    {
+                        id = "idx",
+                        text = tostring(k),
+                        widget = wibox.widget.textbox
+                    },
+                    {
+                        id = "txt",
+                        text = v,
+                        forced_height = popup_row_height,
+                        paddings = 1,
+                        widget = wibox.widget.textbox
+                    },
+                    layout = wibox.layout.ratio.horizontal,
+                }
+                function row.get_txt() return row:get_children_by_id("txt")[1].text end
+                function row.set_idx(idx) row:get_children_by_id("idx")[1]:set_text(idx) end
+                row:ajust_ratio(2, 0.1, 0.9, 0)
+                rows:insert(k, row)
+                ::continue::
+            end
+
+            local height = popup_header_height + math.min(#upgrades_tbl, _config.popup_height) * popup_row_height
+            popup:setup {
+                {
+                    {
+                        {
+                            {
+                                header,
+                                rows,
+                                forced_height = height,
+                                layout = wibox.layout.fixed.vertical
+                            },
+                            content_fill_horizontal = true,
+                            layout = wibox.container.place
+                        },
+                        margins = 10,
+                        layout = wibox.container.margin
+                    },
+                    bg = _config.popup_bg_color,
+                    layout = wibox.widget.background
+                },
+                forced_width = _config.popup_width,
+                layout = wibox.layout.fixed.horizontal
+            }
+       end,
+       pacman_widget
+    ))
+    return pacman_widget
+end
+
+return setmetatable(pacman_widget, { __call = function(_, ...) return worker(...) end })
+
diff --git a/pacman-widget/screenshots/pacman.gif b/pacman-widget/screenshots/pacman.gif
new file mode 100644
index 0000000..1c26bcc
--- /dev/null
+++ b/pacman-widget/screenshots/pacman.gif
diff --git a/pacman-widget/upgrade b/pacman-widget/upgrade
new file mode 100755
index 0000000..af2f9f7
--- /dev/null
+++ b/pacman-widget/upgrade
@@ -0,0 +1,2 @@
+#!/bin/bash
+pkexec --disable-internal-agent pacman -Syu --noconfirm