adam@3: 
adam@3: assert(LibStub, "LibDataBroker-1.1 requires LibStub")
adam@3: assert(LibStub:GetLibrary("CallbackHandler-1.0", true), "LibDataBroker-1.1 requires CallbackHandler-1.0")
adam@3: 
adam@3: local lib, oldminor = LibStub:NewLibrary("LibDataBroker-1.1", 4)
adam@3: if not lib then return end
adam@3: oldminor = oldminor or 0
adam@3: 
adam@3: 
adam@3: lib.callbacks = lib.callbacks or LibStub:GetLibrary("CallbackHandler-1.0"):New(lib)
adam@3: lib.attributestorage, lib.namestorage, lib.proxystorage = lib.attributestorage or {}, lib.namestorage or {}, lib.proxystorage or {}
adam@3: local attributestorage, namestorage, callbacks = lib.attributestorage, lib.namestorage, lib.callbacks
adam@3: 
adam@3: if oldminor < 2 then
adam@3: 	lib.domt = {
adam@3: 		__metatable = "access denied",
adam@3: 		__index = function(self, key) return attributestorage[self] and attributestorage[self][key] end,
adam@3: 	}
adam@3: end
adam@3: 
adam@3: if oldminor < 3 then
adam@3: 	lib.domt.__newindex = function(self, key, value)
adam@3: 		if not attributestorage[self] then attributestorage[self] = {} end
adam@3: 		if attributestorage[self][key] == value then return end
adam@3: 		attributestorage[self][key] = value
adam@3: 		local name = namestorage[self]
adam@3: 		if not name then return end
adam@3: 		callbacks:Fire("LibDataBroker_AttributeChanged", name, key, value, self)
adam@3: 		callbacks:Fire("LibDataBroker_AttributeChanged_"..name, name, key, value, self)
adam@3: 		callbacks:Fire("LibDataBroker_AttributeChanged_"..name.."_"..key, name, key, value, self)
adam@3: 		callbacks:Fire("LibDataBroker_AttributeChanged__"..key, name, key, value, self)
adam@3: 	end
adam@3: end
adam@3: 
adam@3: if oldminor < 2 then
adam@3: 	function lib:NewDataObject(name, dataobj)
adam@3: 		if self.proxystorage[name] then return end
adam@3: 
adam@3: 		if dataobj then
adam@3: 			assert(type(dataobj) == "table", "Invalid dataobj, must be nil or a table")
adam@3: 			self.attributestorage[dataobj] = {}
adam@3: 			for i,v in pairs(dataobj) do
adam@3: 				self.attributestorage[dataobj][i] = v
adam@3: 				dataobj[i] = nil
adam@3: 			end
adam@3: 		end
adam@3: 		dataobj = setmetatable(dataobj or {}, self.domt)
adam@3: 		self.proxystorage[name], self.namestorage[dataobj] = dataobj, name
adam@3: 		self.callbacks:Fire("LibDataBroker_DataObjectCreated", name, dataobj)
adam@3: 		return dataobj
adam@3: 	end
adam@3: end
adam@3: 
adam@3: if oldminor < 1 then
adam@3: 	function lib:DataObjectIterator()
adam@3: 		return pairs(self.proxystorage)
adam@3: 	end
adam@3: 
adam@3: 	function lib:GetDataObjectByName(dataobjectname)
adam@3: 		return self.proxystorage[dataobjectname]
adam@3: 	end
adam@3: 
adam@3: 	function lib:GetNameByDataObject(dataobject)
adam@3: 		return self.namestorage[dataobject]
adam@3: 	end
adam@3: end
adam@3: 
adam@3: if oldminor < 4 then
adam@3: 	local next = pairs(attributestorage)
adam@3: 	function lib:pairs(dataobject_or_name)
adam@3: 		local t = type(dataobject_or_name)
adam@3: 		assert(t == "string" or t == "table", "Usage: ldb:pairs('dataobjectname') or ldb:pairs(dataobject)")
adam@3: 
adam@3: 		local dataobj = self.proxystorage[dataobject_or_name] or dataobject_or_name
adam@3: 		assert(attributestorage[dataobj], "Data object not found")
adam@3: 
adam@3: 		return next, attributestorage[dataobj], nil
adam@3: 	end
adam@3: 
adam@3: 	local ipairs_iter = ipairs(attributestorage)
adam@3: 	function lib:ipairs(dataobject_or_name)
adam@3: 		local t = type(dataobject_or_name)
adam@3: 		assert(t == "string" or t == "table", "Usage: ldb:ipairs('dataobjectname') or ldb:ipairs(dataobject)")
adam@3: 
adam@3: 		local dataobj = self.proxystorage[dataobject_or_name] or dataobject_or_name
adam@3: 		assert(attributestorage[dataobj], "Data object not found")
adam@3: 
adam@3: 		return ipairs_iter, attributestorage[dataobj], 0
adam@3: 	end
adam@3: end