Update annotations: back_handler and blocker

druid/base/back_handler.lua

@@ -1,13 +1,14 @@
 --- Component to handle back key (android, backspace)
--- @module druid.back_handler
+-- @module BackHandler
+-- @within BaseComponent
+-- @alias druid.back_handler
 
---- Component events
--- @table Events
--- @tfield druid_event on_back On back handler callback
+--- On back handler callback(self, params)
+-- @tfield druid_event on_back
+
+--- Params to back callback
+-- @tfield any params
 
---- Component fields
--- @table Fields
--- @tfield any params Params to click callbacks
 
 local Event = require("druid.event")
 local const = require("druid.const")
@@ -17,21 +18,20 @@ local BackHandler = component.create("back_handler", { const.ON_INPUT })
 
 
 --- Component init function
--- @function back_handler:init
+-- @tparam BackHandler self
 -- @tparam callback callback On back button
--- @tparam[opt] params Callback argument
-function BackHandler:init(callback, params)
+-- @tparam[opt] any params Callback argument
+function BackHandler.init(self, callback, params)
 	self.params = params
-
 	self.on_back = Event(callback)
 end
 
 
 --- Input handler for component
--- @function back_handler:on_input
+-- @tparam BackHandler self
 -- @tparam string action_id on_input action id
 -- @tparam table action on_input action
-function BackHandler:on_input(action_id, action)
+function BackHandler.on_input(self, action_id, action)
 	if not action[const.RELEASED] then
 		return false
 	end