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--- Element used for grouping elements and passing input to selected child based on controller set.
Group = require "not.Element":extends()
function Group:new (parent)
Group.__super.new(self, parent)
self.children = {}
self.margin = 0
end
function Group:addChild (element)
table.insert(self.children, element)
return element
end
-- TODO: Missing semi-important docs on Group's setPosition.
function Group:setPosition (x, y)
local dx = 0
for _,child in ipairs(self.children) do
child:setPosition(x + dx, y)
dx = dx + child:getSize() + self.margin
end
return Group.__super.setPosition(self, x, y)
end
function Group:getSize ()
local twidth = -self.margin
local theight = 0
for _,child in ipairs(self.children) do
local cwidth, cheight = child:getSize()
twidth = twidth + child:getSize() + self.margin
if theight < cheight then
theight = cheight
end
end
return twidth, theight
end
--- Calls function with parameters for each child.
-- @param func key of function to call
-- @param ... parameters passed to function
-- @return table with calls' results
function Group:callEach (func, ...)
local results = {}
for _,child in ipairs(self.children) do
if type(child[func]) == "function" then
table.insert(results, child[func](child, ...) or nil)
end
end
return results
end
--- Calls function with parameters for each but one child.
-- @param avoid child to avoid calling
-- @param func key of function to call
-- @param ... parameters passed to function
-- @return table with calls' results
function Group:callEachBut (avoid, func, ...)
local results = {}
for _,child in ipairs(self.children) do
if child ~= avoid then
if type(child[func]) == "function" then
table.insert(results, child[func](child, ...) or nil)
end
end
end
return results
end
--- Calls function with parameters for one child based on controller set.
-- @param set controller set
-- @param func key of function to call
-- @param ... parameters passed to function
-- @return results of called function
function Group:callWithSet (set, func, ...)
for i,test in ipairs(Controller.getSets()) do
if test == set then
local child = self.children[i]
if child then
return child[func](child, ...)
end
end
end
end
function Group:focus ()
self:callEach("focus")
self.focused = true
return true
end
function Group:blur ()
self:callEach("blur")
self.focused = false
end
function Group:draw (scale)
self:callEach("draw", scale)
end
function Group:update (dt)
self:callEach("update", dt)
end
function Group:controlpressed (set, action, key)
if self.focused then
self:callWithSet(set, "controlpressed", set, action, key)
end
end
function Group:controlreleased (set, action, key)
if self.focused then
self:callWithSet(set, "controlreleased", set, action, key)
end
end
return Group
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