local FunctionQueue = class("FunctionQueue")

--[[
	执行队列
]]--

function FunctionQueue:ctor()
	self.FunctionQueue = {};
	self.isRunning = false;
end

function FunctionQueue:clear()
	self.FunctionQueue = {}
	self.isRunning = false;
end

function FunctionQueue:addFunction(func)
	
	-- 添加到执行队列
	table.insert(self.FunctionQueue, func)
	
	local function runFunc()		
		if #self.FunctionQueue <= 0 then
			self.isRunning = false
			return
		end
		
		local fun = self.FunctionQueue[1]
		table.remove(self.FunctionQueue,1)
		self.isRunning = true
		
		fun(function()
			self.isRunning = false;
			runFunc();			
		end)
	end
	
	-- 如果当前没有在执行，则马上开始执行
	log("self.isRunning:", self.isRunning)
	
	if not self.isRunning then
		runFunc();
	end
end

return FunctionQueue