Added basalt.getElementClass(name)

Added Graph
Added List:getSelectedItem()
Fixed Image:addFrame()

src/elements/Graph.lua

@@ -0,0 +1,64 @@
+local elementManager = require("elementManager")
+local VisualElement = elementManager.getElement("elements/VisualElement")
+---@configDescription 
+---@configDefault false
+
+---@class Graph : VisualElement
+local Graph = setmetatable({}, VisualElement)
+Graph.__index = Graph
+
+Graph.defineProperty(Graph, "data", {default = {}, type = "table", canTriggerRender = true})
+Graph.defineProperty(Graph, "minValue", {default = 0, type = "number", canTriggerRender = true})
+Graph.defineProperty(Graph, "maxValue", {default = 100, type = "number", canTriggerRender = true})
+Graph.defineProperty(Graph, "graphColor", {default = colors.yellow, type = "color", canTriggerRender = true})
+Graph.defineProperty(Graph, "graphSymbol", {default = "\127", type = "string", canTriggerRender = true}) -- Default: "|"
+
+function Graph.new()
+    local self = setmetatable({}, Graph):__init()
+    return self
+end
+
+function Graph:init(props, basalt)
+    VisualElement.init(self, props, basalt)
+    self.set("type", "Graph")
+    return self
+end
+
+function Graph:setPoint(index, value)
+    local data = self.get("data")
+    data[index] = value
+    self:updateRender()
+end
+
+function Graph:addPoint(value)
+    local data = self.get("data")
+    table.insert(data, value)
+    while #data > self.get("width") do
+        table.remove(data, 1)
+    end
+    self:updateRender()
+end
+
+function Graph:render()
+    VisualElement.render(self)
+    
+    local data = self.get("data")
+    local width = self.get("width")
+    local height = self.get("height")
+    local minVal = self.get("minValue")
+    local maxVal = self.get("maxValue")
+    local symbol = self.get("graphSymbol")
+    local graphColor = self.get("graphColor")
+
+    for x = 1, width do
+        if data[x] then
+            local normalizedValue = (data[x] - minVal) / (maxVal - minVal)
+            local y = math.floor(height - (normalizedValue * (height-1)))
+            y = math.max(1, math.min(y, height))
+
+            self:textFg(x, y, symbol, graphColor)
+        end
+    end
+end
+
+return Graph