--[[
	@description:可以自定义 二级选项卡item 样式的垂直TabBar

	@example:
		code:
			local test_tab_data = {
				["_1"] = "主菜单",
				["_1_1"] = "子菜单",
			}
			或者
			local test_tab_data = {
				["_1"] = {name = "主菜单", ...(自定义数据)},
				["_1_1"] = {name = "子菜单", ...(自定义数据)},
			}

			local call_back = function (index, sub_index)  --回调函数

			end
			self.verTabBar = UICusVerTabBar.New(self.scroll_content, Vector2(265, 590), item, co.TableXY(257, 75))
			self.verTabBar:SetSubOffset(co.TableXY(2, 2))
			self.verTabBar:SetPaddingTop(6)
			self.verTabBar:SetTabBars(test_tab_data, call_back)
			self.verTabBar:SetSelectTab(1, 2)
]]

UICusVerTabBar = UICusVerTabBar or BaseClass()

--[[
	sizeDelta: 菜单大小
	item: 自定义的二级选项卡item

	tab_btn_size: 一级选项卡的大小
	padding_top: 一级选项卡顶部内边距
	subCon_offset: 一级选项卡子内容偏移
]]
function UICusVerTabBar:__init(parent_wnd, sizeDelta, item, tab_btn_size, padding_top, tab_offset, subCon_offset)
	self.parent_wnd = parent_wnd
	self.btn_list = {}
	self.item = item
	self.tab_btn_size = tab_btn_size
	self.padding_top = padding_top or 0
	self.offset = tab_offset
	self.subCon_offset = subCon_offset
	self:Load(sizeDelta)
end

function UICusVerTabBar:__delete()
	for i,v in ipairs(self.btn_list) do
		v:DeleteMe()
		v = nil
	end
	self.btn_list = {}

	destroy(self.scroll_view)
end

function UICusVerTabBar:Load(sizeDelta)
	self.scroll_view = UiFactory.createChild(self.parent_wnd, UIType.ScrollView, "bar_scroll")
	self.scroll_view.transform.anchorMax = Vector2(0, 1)
	self.scroll_view.transform.anchorMin = Vector2(0, 1)
	self.scroll_view.transform.pivot = Vector2(0, 1)
	self.scroll_view.transform.anchoredPosition = Vector2(0, 0)
	self.scroll_view.transform.sizeDelta = sizeDelta and sizeDelta or Vector2(202, 561)
	self.scroll_view_content = self.scroll_view.transform:Find("Viewport/Content")
	self.scroll_view_viewport = self.scroll_view.transform:Find("Viewport")
	self:InitEvent()
end

function UICusVerTabBar:InitEvent()

end

function UICusVerTabBar:SetTabBars(bar_list, call_back, select_anything, force_size)
	if bar_list == nil or TableSize(bar_list) == 0 then return end
	
	--先隐藏所有菜单
	for i,v in ipairs(self.btn_list) do
		v:SetVisible(false)
	end

	for i = 1, TableSize(bar_list) do
		local index = "_" .. i
		if not bar_list[index] then
			break 
		end

		local tab_btn = self.btn_list[i]
		if tab_btn == nil then
			tab_btn = UICusVerTabBtn.New(self.scroll_view_content, self.item, self.tab_btn_size, self.subCon_offset)
			self.btn_list[i] = tab_btn
		end
		tab_btn:SetTabDetail(bar_list, i, call_back, select_anything, force_size)
		tab_btn:SetSubOffset(self.offset)
		tab_btn:SetVisible(true)

		local function onBtnClickHandler(target)
			self:SetSelectTab(tab_btn.index)
		end
		if tab_btn.tab then
			AddClickEvent(tab_btn.tab, onBtnClickHandler,2)
		end
	end

	self:RefreshTabPos()
end

--更新tabBar的位置
function UICusVerTabBar:RefreshTabPos(index, sub_index)
	local gap = self.padding_top
	local btn_height
	for i,v in ipairs(self.btn_list) do
		btn_height = v.btn_height
		if v.show == true then
			local off = self.offset and (v:GetVisibleCount(true) - 1) * self.offset.y or 0
			local h = v:GetVisibleCount(true) * self.item.Height + off
			v:SetPosition(0, -gap)
			gap = gap + v.btn_height + h
		else
			v:SetPosition(0, -gap)
			gap = gap + v.btn_height
		end
	end
	self.scroll_view_content.sizeDelta = Vector2(self.scroll_view_content.sizeDelta.x, gap) -- +40?
	if self.index and sub_index and sub_index >= 5 then
		local all_height = self.item.Height * 4 + (self.index - 1) * btn_height
		self.scroll_view_content.localPosition = Vector3(0,all_height,0)
	else
		self.scroll_view_content.localPosition = Vector3(0,0,0)
	end
end

--设置选中的选项卡
--[[function UICusVerTabBar:SetSelectTab(index, sub_index,force_show)
	self.sub_index = sub_index
	self.index = index
	for i,v in ipairs(self.btn_list) do
		-- if v.index and v.index == index then
			v:SetSelectMode(index, sub_index, force_show)
		-- end
	end
	GlobalEventSystem:Fire(EventName.TAB_BAR_BE_CLICK)
	self:RefreshTabPos()
end--]]
--设置选中的选项卡
function UICusVerTabBar:SetSelectTab(index, sub_index,force_show)
	for i,v in ipairs(self.btn_list) do
		if v.index and v.index == index then
			if not v.show then
				self:CancelSetSelectTab(index)
			end
			v:SetSelectMode(index, sub_index, force_show, self.quick_select)
			break
		end
	end
	self:RefreshTabPos(index, sub_index)
end

--取消所有的选中项
function UICusVerTabBar:CancelSetSelectTab(index)
	for i,v in ipairs(self.btn_list) do
		v:RefreshBtnState(false)
		v:SetSelectSubIndex(0, 0)
	end
	--self:RefreshTabPos()

	if index and index * UIVerTabSubBtn.Height > self.scroll_view.transform.sizeDelta.y / 2 then
		self.scroll_view_content.localPosition = Vector2(self.scroll_view_content.localPosition.x, (index - 1) * ComposeTabSubBtn.Height)
	else
		self.scroll_view_content.localPosition = Vector2(self.scroll_view_content.localPosition.x, 0)
	end
end

function UICusVerTabBar:SetScrollViewSize(width,heigh)
	self.scroll_view.transform.sizeDelta = Vector2(width,heigh)
end

function UICusVerTabBar:RefreshTabBtnState(index)
	for i,v in ipairs(self.btn_list) do
		if v.index == index then
			v:RefreshBtnState(v.show)
		end
	end

	self:RefreshTabPos()
end

function UICusVerTabBar:GetTabBtnShowState(index)
	for i,v in ipairs(self.btn_list) do
		if v.index == index then
			return v.show
		end
	end
end


--在回调函数中调用该函数，刷新选中状态
function UICusVerTabBar:UpdateSelectState(index, sub_index)
	for i,v in ipairs(self.btn_list) do
		v:SetSelectState(false)
		for key,value in ipairs(v.sub_btn_list) do
			value:SetSelectState(false)
		end
	end

	if sub_index == 0 then
		self.btn_list[index]:SetSelectState(true)
	else
		self.btn_list[index].sub_btn_list[sub_index]:SetSelectState(true)
	end
end

--传入主索引和所有要显示的子索引列表，取消红点只传入主索引
function UICusVerTabBar:ShowRedDot(index, index_list)
	if self.btn_list[index] and self.btn_list[index].ShowRedDot then
		self.btn_list[index]:ShowRedDot(index_list)
	end
end