local TestUI = UI.CreateContext("TestUI")
local TestFrame = UI.CreateFrame("SimpleWindow", "TestWindow", TestUI)
local TestList = UI.CreateFrame("SimpleScrollList", "TestList", TestFrame)
local AddButton = UI.CreateFrame("RiftButton", "AddButton", TestFrame)
local DelButton = UI.CreateFrame("RiftButton", "DelButton", TestFrame)

scrollitems = {'test1', 'test2', 'test3', 'test4', 'test5'}

TestFrame:SetVisible(false)
TestFrame:SetCloseButtonVisible(true)
TestFrame:SetTitle("Tester")
TestFrame:SetHeight(600)
TestFrame:SetPoint("TOPLEFT", UIParent, "TOPLEFT", 300, 100)
TestFrame:SetVisible(true)

TestList:SetBorder(1, 1, 1, 1, 1)
TestList:SetBackgroundColor(0, 0, 0, 1)
TestList:SetPoint("TOPLEFT", TestFrame:GetContent(), "TOPLEFT", 5, 60)
TestList:SetPoint("BOTTOMRIGHT", TestFrame:GetContent(), "BOTTOMRIGHT", -5, -35)
TestList:SetItems(scrollitems)

AddButton:SetText("Add Item")
AddButton:SetPoint("BOTTOMLEFT", TestFrame, "BOTTOMLEFT", 10, -10)
AddButton.Event.LeftClick = function() AddItem() end

DelButton:SetText("Del Item")
DelButton:SetPoint("BOTTOMRIGHT", TestFrame, "BOTTOMRIGHT", -10, -10)
DelButton.Event.LeftClick = function() RemoveItem() end

function AddItem()
	local randomNo = math.random(1000)
	local newitem = string.format("test%s", randomNo)
	table.insert(scrollitems, newitem)
	TestList:SetItems(scrollitems)
end

function RemoveItem()
	if not TestList:GetSelectedIndex() then return end
	table.remove(scrollitems, TestList:GetSelectedIndex())
	TestList:SetItems(scrollitems)
end