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52 lines
1.2 KiB
Lua
52 lines
1.2 KiB
Lua
-- Copyright (c) 2021 Maxim Tuprikov <insality@gmail.com>. This code is licensed under MIT license
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--- Component to handle back key (android, backspace)
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-- @module BackHandler
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-- @within BaseComponent
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-- @alias druid.back_handler
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--- On back handler callback(self, params)
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-- @tfield druid_event on_back
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--- Params to back callback
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-- @tfield any params
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---
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local Event = require("druid.event")
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local const = require("druid.const")
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local component = require("druid.component")
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local BackHandler = component.create("back_handler")
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--- Component init function
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-- @tparam BackHandler self
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-- @tparam callback callback On back button
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-- @tparam[opt] any params Callback argument
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function BackHandler.init(self, callback, params)
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self.params = params
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self.on_back = Event(callback)
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end
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--- Input handler for component
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-- @tparam BackHandler self
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-- @tparam string action_id on_input action id
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-- @tparam table action on_input action
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function BackHandler.on_input(self, action_id, action)
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if not action[const.RELEASED] then
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return false
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end
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if action_id == const.ACTION_BACK or action_id == const.ACTION_BACKSPACE then
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self.on_back:trigger(self:get_context(), self.params)
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return true
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end
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return false
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end
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return BackHandler
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