improved frame placement code, will take advantage of the build-in blizzy code to always save position relative to the nearest edge (or center)

ActionBars.lua

@@ -23,19 +23,43 @@ function BT4ActionBars:OnInitialize()
 	self.db = Bartender4.db:RegisterNamespace("ActionBars", defaults)
 	
 	for i=1,10 do
-		actionbars[i] = ActionBar:Create(i, self.db.profile.Bars[i])
+		actionbars[i] = self:Create(i, self.db.profile.Bars[i])
+	end
+	
+	self.db.RegisterCallback(self, "OnProfileChanged", "ApplyConfig")
+	self.db.RegisterCallback(self, "OnProfileCopied", "ApplyConfig")
+end
+
+function BT4ActionBars:OnEnable()
+	-- do stuff
+end
+
+function BT4ActionBars:ApplyConfig()
+	for i,v in ipairs(actionbars) do
+		v:ApplyConfig(self.db.profile.Bars[k])
 	end
 end
 
-function ActionBar:Create(id, config)
-	local bar = setmetatable(Bartender4.Bar:Create(id, "SecureStateDriverTemplate", config), ActionBar_MT)
-	if not config.x or not config.y then
-		bar:SetPoint("CENTER", 0, -250 + (id-1) * 38)
+local initialPosition
+do
+	function initialPosition(bar)
+		bar:SetPoint("CENTER", 0, -250 + (bar.id-1) * 38)
 		bar:SavePosition()
-	else
-		bar:LoadPosition()
 	end
+end
+
+function BT4ActionBars:Create(id, config)
+	local bar = setmetatable(Bartender4.Bar:Create(id, "SecureStateDriverTemplate", config), ActionBar_MT)
+	-- TODO: Setup Buttons and set bar width before pulling initial position
+	
+	bar:ApplyConfig()
+	-- for debugging only
 	bar:Unlock()
 	
 	return bar
 end
+
+function ActionBar:ApplyConfig(config)
+	Bar.ApplyConfig(self, config)
+	if not self.config.Position then initialPosition(self) end
+end

Bar.lua

@@ -15,6 +15,7 @@ Bartender4.Bar = {}
 Bartender4.Bar.prototype = Bar
 function Bartender4.Bar:Create(id, template, config)
 	local bar = setmetatable(CreateFrame("Button", ("BT4Bar%s"):format(id), UIParent, template), Bar_MT)
+	bar.id = id
 	
 	bar:EnableMouse(false)
 	bar:SetMovable(true)
@@ -72,6 +73,14 @@ do
 	end
 end
 
+function Bar:ApplyConfig(config)
+	if config then
+		self.config = config
+	end
+	self:Lock()
+	self:LoadPosition()
+end
+
 function Bar:Unlock()
 	self:EnableMouse(true)
 	self:SetScript("OnEnter", barOnEnter)
@@ -104,18 +113,23 @@ function Bar:Lock()
 end
 
 function Bar:LoadPosition()
-	local x, y, s = self.config.x, self.config.y, self:GetEffectiveScale()
+	if not self.config.Position then return end
+	local pos = self.config.Position
+	local x, y, s = pos.x, pos.y, UIParent:GetEffectiveScale()
+	local point, relPoint = pos.point, pos.relPoint
 	x, y = x/s, y/s
 	self:ClearAllPoints()
-	self:SetPoint("BOTTOMLEFT", UIParent, "BOTTOMLEFT", x, y)
+	self:SetPoint(point, UIParent, relPoint, x, y)
 end
 
 function Bar:SavePosition()
-	local x, y = self:GetLeft(), self:GetBottom()
-	local s = self:GetEffectiveScale()
+	if not self.config.Position then self.config.Position = {} end
+	local pos = self.config.Position
+	local point, parent, relPoint, x, y = self:GetPoint()
+	local s = UIParent:GetEffectiveScale()
 	x, y = x*s, y*s
-	self.config.x = x
-	self.config.y = y
+	pos.x, pos.y = x, y
+	pos.point, pos.relPoint = point, relPoint
 end
 
 function Bar:SetSize(width, height)