Improve encapsulation of various "trace" flags.

diff --git a/Ovale.lua b/Ovale.lua
index bd4c784..66369b3 100644
--- a/Ovale.lua
+++ b/Ovale.lua
@@ -36,6 +36,12 @@ local OVALE_TRUE_STRING = tostring(true)

 -- Addon message prefix.
 local OVALE_MSG_PREFIX = addonName
+
+-- Flags used by debugging print functions.
+-- If "bug" flag is set, then the next frame refresh is traced.
+local self_bug = false
+-- If "traced" flag is set, then the public "trace" property is toggled before the next frame refresh.
+local self_traced = false
 --</private-static-properties>

 --<public-static-properties>
@@ -51,11 +57,8 @@ Ovale.frame = nil
 Ovale.checkBoxes = {}
 --drop down GUI items
 Ovale.dropDowns = {}
---set it if there was a bug, traces will be enabled on next frame
-Ovale.bug = false
-Ovale.traced = false
---trace next script function calls
-Ovale.trace=false
+-- Flag to activate tracing the function calls for the next frame refresh.
+Ovale.trace = false
 --in combat?
 Ovale.enCombat = false
 Ovale.refreshNeeded = {}
@@ -261,6 +264,22 @@ function Ovale:UpdateFrame()
 	end
 end

+function Ovale:PostRefresh()
+	-- If trace flag is set here, then flag that we just traced one frame.
+	if self.trace then
+		self_traced = true
+	end
+	-- If there was a bug, then enable trace on the next frame.
+	if self_bug then
+		self.trace = true
+	end
+	-- Toggle trace flag so we don't endlessly trace successive frames.
+	if self.trace and self_traced then
+		self_traced = false
+		self.trace = false
+	end
+end
+
 function Ovale:IsChecked(v)
 	return self.checkBoxes[v] and self.checkBoxes[v]:GetValue()
 end
@@ -336,12 +355,12 @@ end

 function Ovale:Error(...)
 	self:Print("Fatal error: ", ...)
-	self.bug = true
+	self_bug = true
 end

 function Ovale:Errorf(...)
 	self:Printf("Fatal error: %s", self:Format(...))
-	self.bug = true
+	self_bug = true
 end

 function Ovale:Log(...)
diff --git a/OvaleFrame.lua b/OvaleFrame.lua
index ec62251..58df1e3 100644
--- a/OvaleFrame.lua
+++ b/OvaleFrame.lua
@@ -281,19 +281,7 @@ do
 		end

 		wipe(Ovale.refreshNeeded)
-
-		if (not Ovale.bug) then
-			Ovale.traced = false
-		end
-
-		if (Ovale.trace) then
-			Ovale.trace=false
-			Ovale.traced = true
-		end
-
-		if (Ovale.bug and not Ovale.traced) then
-			Ovale.trace = true
-		end
+		Ovale:PostRefresh()
 	end

 	local function UpdateIcons(self)