sonic-radiance/sonic-radiance.love/birb/modules/gui/mixins/elements.lua

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local ElementList = Object:extend()
function ElementList:initElements()
self.elements = {}
self.focusedElement = nil
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self.lastFocused = nil
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self.nbrElement = 0
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end
function ElementList:addElement(name, element)
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self.nbrElement = self.nbrElement + 1
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self.elements[name] = element
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return self.nbrElement
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end
function ElementList:deleteElement(name)
self.elements[name] = nil
end
function ElementList:setFocus(name, widgetId, page)
assert(self:elementExists(name), "Element " .. name .. " doesn't exists")
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self:storeLastFocus()
self.focusedElement = name
self.elements[name].isVisible = true
if (widgetId ~= nil) then
self.elements[name]:setSubFocus(widgetId, page)
end
end
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function ElementList:removeFocus()
self:storeLastFocus()
self.focusedElement = nil
end
function ElementList:storeLastFocus()
if (self.focusedElement ~= nil) then
self.lastFocused = self.focusedElement
end
end
function ElementList:setLastFocus()
if (self:elementExists(self.lastFocused)) then
self:setFocus(self.lastFocused)
end
end
function ElementList:elementExists(name)
return (self:getElement(name) ~= nil)
end
function ElementList:haveFocus()
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return self:elementIsVisible(self.focusedElement)
end
function ElementList:getFocusedElement()
return self:getElement(self.focusedElement)
end
function ElementList:getElement(name)
if (not utils.string.isEmpty(name)) then
return self.elements[name]
end
return nil
end
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function ElementList:getVisibleElement(topLayer)
local visibleList = {}
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for _, element in pairs(self.elements) do
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if (element ~= nil) then
if (element:getVisibility() and ((element.depth) < 0 == topLayer)) then
table.insert(visibleList, element)
end
end
end
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table.sort(visibleList, function (a, b)
if (a.depth == b.depth) then
return (a.creationId < b.creationId)
else
return (a.depth > b.depth)
end
end)
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return visibleList
end
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function ElementList:elementIsVisible(name)
if (self:elementExists(name)) then
return self.elements[name]:getVisibility()
end
return false
end
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return ElementList