UI = UI or {}

--UI组件的基类
UI.UIComponent = UI.UIComponent or {}
function UI.UIComponent:Init( view_owner )
	--调用界面类的UIPartical:AddUIComponent会触发,view_owner就是界面类指针
	self.view_owner = view_owner
end
function UI.UIComponent:OnLoad( )
	--界面加载成功后触发,先于BaseView和BaseItem的load_callback
end
function UI.UIComponent:OnDestroy( )
	--界面销毁后触发,后于BaseView的destroy_callback和BaseItem的__delete
end

--倒计时组件,内置管理定时器,界面销毁时会自动移除,请放心使用，注意参数的单位都是秒
UI.Countdown = UI.Countdown or BaseClass(UI.UIComponent)
--传入结束时间end_time,截至该时间前每秒都会触发传入的step_call_back回调,其回调函数的参数为剩余时间
function UI.Countdown:CountdownByEndTime( end_time, step_call_back, duration )
	if not end_time or not step_call_back then 
		print('Cat:UIComponents.lua[UI.Countdown:CountdownByEndTime] failed! some arge nil:', tostring(end_time), tostring(step_call_back))
		return 
	end

	self.end_time = end_time
	self.step_call_back = step_call_back
	local function step_countdown( )
		local curTime = TimeUtil:getServerTimeMs()	
		local left_time = self.end_time - curTime/1000
		self.step_call_back(left_time)
		if left_time <= 0 then
			self:OnDestroy()
		else
			self.is_counting = true
		end
	end
	if not self.step_countdown_id then
		self.step_countdown_id = GlobalTimerQuest:AddPeriodQuest(step_countdown, duration and duration or 1, -1)
	end
	step_countdown()
end

function UI.Countdown:CountdownByLeftTime( left_time, step_call_back, duration )
	local curTime = TimeUtil:getServerTimeMs()
	self:CountdownByEndTime(curTime/1000+left_time, step_call_back, duration)
end

function UI.Countdown:DelayCallByLeftTime( left_time, step_call_back, duration )
	self:CountdownByLeftTime(left_time, function(_left_time)
		if _left_time<=0 and step_call_back then
			step_call_back()
		end
	end, duration)
end

function UI.Countdown:IsCounting(  )
	return self.is_counting
end

function UI.Countdown:Stop(  )
	self:OnDestroy()
end

function UI.Countdown:OnDestroy(  )
	if self.step_countdown_id then
		GlobalTimerQuest:CancelQuest(self.step_countdown_id)
		self.step_countdown_id = nil
	end
	self.is_counting = false
end

--防止某函数在短时间内频繁调用
UI.PreventFastCall = UI.PreventFastCall or BaseClass(UI.UIComponent)
function UI.PreventFastCall:OnLoad( )
	self.last_handle_scroll_time = 0
	self.prevent_time = 0.5
end

function UI.PreventFastCall:SetPreventTime( prevent_time )
	self.prevent_time = prevent_time
end

function UI.PreventFastCall:CallFunc(func, ...)
	local curTime = TimeUtil:getServerTimeMs()
	local left_time = curTime - self.last_handle_scroll_time
	if left_time < self.prevent_time then
		local functor = Functor(func, ...)
		local function delay_call_func( )
			functor()
			self.last_handle_scroll_time = curTime
		end
		if not self.delay_call_func_id then
			self.delay_call_func_id = GlobalTimerQuest:AddPeriodQuest(delay_call_func, self.prevent_time-left_time, 1)
		end
		return false
	end
	func(...)
	self.last_handle_scroll_time = curTime
end

function UI.PreventFastCall:OnDestroy()
	if self.delay_call_func_id then
		GlobalTimerQuest:CancelQuest(self.delay_call_func_id)
		self.delay_call_func_id = nil
	end
end

UI.ViewEventListener = UI.ViewEventListener or {}
function UI.ViewEventListener:OnLoad( )
	if self.on_load_call_back then
		self.on_load_call_back()
	end
end

function UI.ViewEventListener:OnDestroy( )
	if self.on_destroy_call_back then
		self.on_destroy_call_back()
	end
end

function UI.ViewEventListener:SetOnLoadCallBack( call_back )
	self.on_load_call_back = call_back
end

function UI.ViewEventListener:SetOnDestroyCallBack( call_back )
	self.on_destroy_call_back = call_back
end

--绑定组件
UI.BindEventComp = UI.BindEventComp or {}
UI.BindEventComp.BindEvent = function(self, bindDispather, eventName, handleFunc)
	assert(bindDispather~=nil, "bindDispather must be not nil!")
	self.bindEventInfos = self.bindEventInfos or {}
	-- local hadBind = self.bindEventInfos[eventName..tostring(bindDispather)]
	-- assert(not hadBind, 'Cat:UINode.lua had bind event name : '..eventName)
	-- print('Cat:UINode.lua[69] eventName..tostring(bindDispather)', eventName..tostring(bindDispather))
	local eventID = bindDispather:Bind(eventName, handleFunc)
	-- self.bindEventInfos[eventName..tostring(bindDispather)] = {bindDispather, eventID}
	table.insert(self.bindEventInfos, {bindDispather, eventID})
	return eventID
end

UI.BindEventComp.UnBindAll = function(self)
	if self.bindEventInfos then
		for k,v in pairs(self.bindEventInfos) do
			if v[1] and v[2] then
				if v[2] == EventName.SHOW_EXIT_BTN_STATE then
					print("Cat:UIComponents [148] : ",debug.traceback())
				end
				v[1]:UnBind(v[2])
			end
		end
		self.bindEventInfos = nil
	end
end