diff options
Diffstat (limited to 'core/lua/astal/binding.lua')
-rw-r--r-- | core/lua/astal/binding.lua | 71 |
1 files changed, 0 insertions, 71 deletions
diff --git a/core/lua/astal/binding.lua b/core/lua/astal/binding.lua deleted file mode 100644 index ba1e6e4..0000000 --- a/core/lua/astal/binding.lua +++ /dev/null @@ -1,71 +0,0 @@ -local lgi = require("lgi") -local GObject = lgi.require("GObject", "2.0") - ----@class Binding ----@field emitter table|Variable ----@field property? string ----@field transformFn function -local Binding = {} - ----@param emitter table ----@param property? string ----@return Binding -function Binding.new(emitter, property) - return setmetatable({ - emitter = emitter, - property = property, - transformFn = function(v) - return v - end, - }, Binding) -end - -function Binding:__tostring() - local str = "Binding<" .. tostring(self.emitter) - if self.property ~= nil then - str = str .. ", " .. self.property - end - return str .. ">" -end - -function Binding:get() - if self.property ~= nil and GObject.Object:is_type_of(self.emitter) then - return self.transformFn(self.emitter[self.property]) - end - if type(self.emitter.get) == "function" then - return self.transformFn(self.emitter:get()) - end - error("can not get: Not a GObject or a Variable " + self) -end - ----@param transform fun(value: any): any ----@return Binding -function Binding:as(transform) - local b = Binding.new(self.emitter, self.property) - b.transformFn = function(v) - return transform(self.transformFn(v)) - end - return b -end - ----@param callback fun(value: any) ----@return function -function Binding:subscribe(callback) - if self.property ~= nil and GObject.Object:is_type_of(self.emitter) then - local id = self.emitter.on_notify:connect(function() - callback(self:get()) - end, self.property, false) - return function() - GObject.signal_handler_disconnect(self.emitter, id) - end - end - if type(self.emitter.subscribe) == "function" then - return self.emitter:subscribe(function() - callback(self:get()) - end) - end - error("can not subscribe: Not a GObject or a Variable " + self) -end - -Binding.__index = Binding -return Binding |