Cleaner Code

expcore/gui/concepts/elem_button.lua

@@ -7,27 +7,41 @@ local Gui = require 'expcore.gui.core'
 
 --[[-- A button that lets the player pick one of an: item, entity, tile, or signal similar to the filter-select window.
 @element elem_button
+
 @param on_selection_changed fired when the selected value is changed
+
 @tparam ?string|Concepts.SignalID|function default the option which is selected by default, or a function which returns the default
 @tparam string elem_type the type of elem selection that this is, default is item selection
+
 @usage-- Making a basic elem button
 local basic_elem_button =
-Gui.clone_concept('elem_button','basic_elembutton')
+Gui.new_concept('elem_button')
 :on_selection_changed(function(event)
     event.player.print('Basic elem button is now: '..event.element.elem_value)
 end)
+
 ]]
-Gui.new_concept('elem_button')
+
+Gui.new_concept()
+:save_as('elem_button')
+
+-- Events
 :new_event('on_selection_changed',defines.events.on_gui_elem_changed)
+
+-- Properties
 :new_property('default')
-:new_property('elem_type','item')
+:new_property('elem_type',nil,'item')
+
+-- Draw
 :define_draw(function(properties,parent,element)
+    -- Draw a chose elem button
     element = parent.add{
         name = properties.name,
         type = 'choose-elem-button',
         elem_type = properties.elem_type
     }
 
+    -- If there is a default, select it
     local default = Gui.resolve_property(properties.default,element)
     if default then
         element.elem_value = default