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51 lines
1.3 KiB
Lua
51 lines
1.3 KiB
Lua
local EventListener = require("ui/widget/eventlistener")
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--[[
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This is a generic Widget interface
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widgets can be queried about their size and can be paint.
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that's it for now. Probably we need something more elaborate
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later.
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if the table that was given to us as parameter has an "init"
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method, it will be called. use this to set _instance_ variables
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rather than class variables.
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--]]
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local Widget = EventListener:new()
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--[[
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Use this method to define a class that's inherited from current class.
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It only setup the metabale (or prototype chain) and will not initiatie
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a real instance, i.e. call self:init()
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--]]
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function Widget:extend(from_o)
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local o = from_o or {}
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setmetatable(o, self)
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self.__index = self
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return o
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end
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--[[
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Use this method to initiatie a instance of a class, don't use it for class
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definition.
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--]]
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function Widget:new(o)
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o = self:extend(o)
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-- Both o._init and o.init are called on object creation. But o._init is
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-- used for base widget initialization (basic component used to build other
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-- widgets). While o.init is for higher level widgets, for example Menu
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-- Widget
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if o._init then o:_init() end
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if o.init then o:init() end
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return o
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end
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function Widget:getSize()
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return self.dimen
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end
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function Widget:paintTo(bb, x, y)
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end
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return Widget
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