mpv config added

.config/mpv/scripts/uosc/lib/buttons.lua

@@ -0,0 +1,69 @@
+---@alias ButtonData {icon: string; active?: boolean; badge?: string; command?: string | string[]; tooltip?: string;}
+---@alias ButtonSubscriber fun(data: ButtonData)
+
+local buttons = {
+	---@type ButtonData[]
+	data = {},
+	---@type table<string, ButtonSubscriber[]>
+	subscribers = {},
+}
+
+---@param name string
+---@param callback fun(data: ButtonData)
+function buttons:subscribe(name, callback)
+	local pool = self.subscribers[name]
+	if not pool then
+		pool = {}
+		self.subscribers[name] = pool
+	end
+	pool[#pool + 1] = callback
+	self:trigger(name)
+	return function() buttons:unsubscribe(name, callback) end
+end
+
+---@param name string
+---@param callback? ButtonSubscriber
+function buttons:unsubscribe(name, callback)
+	if self.subscribers[name] then
+		if callback == nil then
+			self.subscribers[name] = {}
+		else
+			itable_delete_value(self.subscribers[name], callback)
+		end
+	end
+end
+
+---@param name string
+function buttons:trigger(name)
+	local pool = self.subscribers[name]
+	local data = self.data[name] or {icon = 'help_center', tooltip = 'Uninitialized button "' .. name .. '"'}
+	if pool then
+		for _, callback in ipairs(pool) do callback(data) end
+	end
+end
+
+---@param name string
+---@param data ButtonData
+function buttons:set(name, data)
+	buttons.data[name] = data
+	buttons:trigger(name)
+	request_render()
+end
+
+mp.register_script_message('set-button', function(name, data)
+	if type(name) ~= 'string' then
+		msg.error('Invalid set-button message parameter: 1st parameter (name) has to be a string.')
+		return
+	end
+	if type(data) ~= 'string' then
+		msg.error('Invalid set-button message parameter: 2nd parameter (data) has to be a string.')
+		return
+	end
+
+	local data = utils.parse_json(data)
+	if type(data) == 'table' and type(data.icon) == 'string' then
+		buttons:set(name, data)
+	end
+end)
+
+return buttons