AceGUI-3.0: Add a getter to allow callers to check if a widget is currently...

AceGUI-3.0: Add a getter to allow callers to check if a widget is currently being released, which can be used as part of some callbacks to alter behavior

git-svn-id: https://repos.wowace.com/wow/ace3/trunk@1231 5debad98-a965-4143-8383-f471b3509dcf

AceGUI-3.0/AceGUI-3.0.lua

@@ -25,7 +25,7 @@
 -- @class file
 -- @name AceGUI-3.0
 -- @release $Id$
-local ACEGUI_MAJOR, ACEGUI_MINOR = "AceGUI-3.0", 40
+local ACEGUI_MAJOR, ACEGUI_MINOR = "AceGUI-3.0", 41
 local AceGUI, oldminor = LibStub:NewLibrary(ACEGUI_MAJOR, ACEGUI_MINOR)
 
 if not AceGUI then return end -- No upgrade needed
@@ -212,6 +212,22 @@ function AceGUI:Release(widget)
 	delWidget(widget, widget.type)
 end
 
+--- Check if a widget is currently in the process of being released
+-- This function check if this widget, or any of its parents (in which case it'll be released shortly as well)
+-- are currently being released. This allows addon to handle any callbacks accordingly.
+-- @param widget The widget to check
+function AceGUI:IsReleasing(widget)
+	if widget.isQueuedForRelease then
+		return true
+	end
+
+	if widget.parent and widget.parent.AceGUIWidgetVersion then
+		return AceGUI:IsReleasing(widget.parent)
+	end
+
+	return false
+end
+
 -----------
 -- Focus --
 -----------
@@ -338,6 +354,10 @@ do
 		AceGUI:Release(self)
 	end
 
+	WidgetBase.IsReleasing = function(self)
+		return AceGUI:IsReleasing(self)
+	end
+
 	WidgetBase.SetPoint = function(self, ...)
 		return self.frame:SetPoint(...)
 	end