notifications lua example

1 files changed, 125 insertions, 0 deletions

diff --git a/examples/lua/notification-popups/widget/notifications.lua b/examples/lua/notification-popups/widget/notifications.lua
new file mode 100644
index 0000000..4704c22
--- /dev/null
+++ b/examples/lua/notification-popups/widget/notifications.lua
@@ -0,0 +1,125 @@
+local astal = require("astal")
+local Widget = astal.Widget
+local GLib = astal.GLib
+local bind = astal.bind
+local timeout = astal.timeout
+
+local map = require("lib").map
+local lookup_icon = require("lib").lookup_icon
+
+local Notifd = astal.require("AstalNotifd")
+local notifd = Notifd.get_default()
+
+local NOTIFICATION_TIMEOUTMS = 5000
+
+local function NotificationIcon(n)
+	local icon = "dialog-information-symbolic"
+
+	if n.app_icon and GLib.file_test(n.app_icon, "EXISTS") then
+		return Widget.Box({ css = string.format('background-image: url("%s");', n.app_icon) })
+	elseif n.app_icon and lookup_icon(n.app_icon) then
+		icon = n.app_icon
+	elseif n.app_name and lookup_icon(n.app_name) then
+		icon = n.app_name
+	end
+
+	return Widget.Icon({
+		icon = icon,
+	})
+end
+
+local function Notification(n)
+	local icon = Widget.Box({
+		valign = "START",
+		class_name = "icon",
+		NotificationIcon(n),
+	})
+
+	local title = Widget.Label({
+		class_name = "title",
+		xalign = 0,
+		justify = "LEFT",
+		hexpand = true,
+		max_width_chars = 24,
+		wrap = true,
+		ellipsize = "END",
+		use_markup = true,
+		label = n.summary,
+	})
+
+	local body = Widget.Label({
+		class_name = "body",
+		hexpand = true,
+		use_markup = true,
+		xalign = 0,
+		justify = "LEFT",
+		wrap = true,
+		label = n.body,
+	})
+
+	local actions = Widget.Box({
+		class_name = "actions",
+		map(n.actions, function(action)
+			return Widget.Button({
+				on_click_release = function()
+					return n:invoke(action.id)
+				end,
+				class_name = "action-button",
+				hexpand = true,
+				label = action.label,
+			})
+		end),
+	})
+	return Widget.EventBox({
+		Widget.Box({
+			class_name = "notification",
+			orientation = "VERTICAL",
+			Widget.Box({
+				icon,
+				Widget.Box({
+					orientation = "VERTICAL",
+					title,
+					body,
+				}),
+			}),
+			actions,
+		}),
+	})
+end
+
+return function(gdkmonitor)
+	local n_list = {}
+
+	local list = Widget.Box({
+		orientation = "VERTICAL",
+		setup = function(self)
+			self:hook(notifd, "notified", function(_, id)
+				local n = notifd:get_notification(id)
+				n_list[id] = Notification(n)
+				self:add(n_list[id])
+				local timeout_ms = n.expire_timeout > 0 and n.expire_timeout or NOTIFICATION_TIMEOUTMS
+				timeout(timeout_ms, function()
+					return n:dismiss()
+				end)
+			end)
+			self:hook(notifd, "resolved", function(_, id)
+				if n_list[id] then
+					n_list[id]:destroy()
+					n_list[id] = nil
+				end
+			end)
+		end,
+	})
+
+	return Widget.Window({
+		namespace = "notifications",
+		gdkmonitor = gdkmonitor,
+		anchor = astal.Astal.WindowAnchor.TOP,
+		layer = "OVERLAY",
+		class_name = "notification-popups",
+		visible = bind(list, "children"):as(function(v)
+			return v and #v > 0
+		end),
+		list,
+	})
+end