fix(docker-widget): Fixed issue with indexing nil [#360] and button

docker-widget/clickable-container.lua

@@ -0,0 +1,59 @@
+local wibox = require('wibox')
+local beautiful = require('beautiful')
+
+local create_click_events = function(widget)
+
+	local container = wibox.widget {
+		widget,
+		widget = wibox.container.background
+	}
+
+	-- Old and new widget
+	local old_cursor, old_wibox
+
+	-- Mouse hovers on the widget
+	container:connect_signal(
+		'mouse::enter',
+		function()
+			container.bg = beautiful.groups_bg
+			-- Hm, no idea how to get the wibox from this signal's arguments...
+			local w = mouse.current_wibox
+			if w then
+				old_cursor, old_wibox = w.cursor, w
+				w.cursor = 'hand1'
+			end
+		end
+	)
+
+	-- Mouse leaves the widget
+	container:connect_signal(
+		'mouse::leave',
+		function()
+			container.bg = beautiful.leave_event
+			if old_wibox then
+				old_wibox.cursor = old_cursor
+				old_wibox = nil
+			end
+		end
+	)
+
+	-- Mouse pressed the widget
+	container:connect_signal(
+		'button::press',
+		function()
+			container.bg = beautiful.press_event
+		end
+	)
+
+	-- Mouse releases the widget
+	container:connect_signal(
+		'button::release',
+		function()
+			container.bg = beautiful.release_event
+		end
+	)
+
+	return container
+end
+
+return create_click_events