local AceGUI = LibStub("AceGUI-3.0")

-- Lua APIs
local pairs, assert, type = pairs, assert, type

-- WoW APIs
local CreateFrame, UIParent = CreateFrame, UIParent

-- Global vars/functions that we don't upvalue since they might get hooked, or upgraded
-- List them here for Mikk's FindGlobals script
-- GLOBALS: CLOSE

----------------
-- Main Frame --
----------------
--[[
	Events :
		OnClose

]]
do
	local Type = "Frame"
	local Version = 8

	local FrameBackdrop = {
		bgFile="Interface\\DialogFrame\\UI-DialogBox-Background",
		edgeFile="Interface\\DialogFrame\\UI-DialogBox-Border", 
		tile = true, tileSize = 32, edgeSize = 32, 
		insets = { left = 8, right = 8, top = 8, bottom = 8 }
	}

	local PaneBackdrop  = {
		bgFile = "Interface\\ChatFrame\\ChatFrameBackground",
		edgeFile = "Interface\\Tooltips\\UI-Tooltip-Border",
		tile = true, tileSize = 16, edgeSize = 16,
		insets = { left = 3, right = 3, top = 5, bottom = 3 }
	}

	local function frameOnClose(this)
		this.obj:Fire("OnClose")
	end
	
	local function closeOnClick(this)
		this.obj:Hide()
	end
	
	local function frameOnMouseDown(this)
		AceGUI:ClearFocus()
	end
	
	local function titleOnMouseDown(this)
		this:GetParent():StartMoving()
		AceGUI:ClearFocus()
	end
	
	local function frameOnMouseUp(this)
		local frame = this:GetParent()
		frame:StopMovingOrSizing()
		local self = frame.obj
		local status = self.status or self.localstatus
		status.width = frame:GetWidth()
		status.height = frame:GetHeight()
		status.top = frame:GetTop()
		status.left = frame:GetLeft()
	end
	
	local function sizerseOnMouseDown(this)
		this:GetParent():StartSizing("BOTTOMRIGHT")
		AceGUI:ClearFocus()
	end
	
	local function sizersOnMouseDown(this)
		this:GetParent():StartSizing("BOTTOM")
		AceGUI:ClearFocus()
	end
	
	local function sizereOnMouseDown(this)
		this:GetParent():StartSizing("RIGHT")
		AceGUI:ClearFocus()
	end
	
	local function sizerOnMouseUp(this)
		this:GetParent():StopMovingOrSizing()
	end

	local function SetTitle(self,title)
		self.titletext:SetText(title)
	end
	
	local function SetStatusText(self,text)
		self.statustext:SetText(text)
	end
	
	local function Hide(self)
		self.frame:Hide()
	end
	
	local function Show(self)
		self.frame:Show()
	end
	
	local function OnAcquire(self)
		self.frame:SetParent(UIParent)
		self.frame:SetFrameStrata("FULLSCREEN_DIALOG")
		self:ApplyStatus()
	end
	
	local function OnRelease(self)
		self.status = nil
		for k in pairs(self.localstatus) do
			self.localstatus[k] = nil
		end
	end
	
	-- called to set an external table to store status in
	local function SetStatusTable(self, status)
		assert(type(status) == "table")
		self.status = status
		self:ApplyStatus()
	end
	
	local function ApplyStatus(self)
		local status = self.status or self.localstatus
		local frame = self.frame
		self:SetWidth(status.width or 700)
		self:SetHeight(status.height or 500)
		if status.top and status.left then
			frame:SetPoint("TOP",UIParent,"BOTTOM",0,status.top)
			frame:SetPoint("LEFT",UIParent,"LEFT",status.left,0)
		else
			frame:SetPoint("CENTER",UIParent,"CENTER")
		end
	end
	
	local function OnWidthSet(self, width)
		local content = self.content
		local contentwidth = width - 34
		if contentwidth < 0 then
			contentwidth = 0
		end
		content:SetWidth(contentwidth)
		content.width = contentwidth
	end
	
	
	local function OnHeightSet(self, height)
		local content = self.content
		local contentheight = height - 57
		if contentheight < 0 then
			contentheight = 0
		end
		content:SetHeight(contentheight)
		content.height = contentheight
	end
	
	local function Constructor()
		local frame = CreateFrame("Frame",nil,UIParent)
		local self = {}
		self.type = "Frame"
		
		self.Hide = Hide
		self.Show = Show
		self.SetTitle =  SetTitle
		self.OnRelease = OnRelease
		self.OnAcquire = OnAcquire
		self.SetStatusText = SetStatusText
		self.SetStatusTable = SetStatusTable
		self.ApplyStatus = ApplyStatus
		self.OnWidthSet = OnWidthSet
		self.OnHeightSet = OnHeightSet
		
		self.localstatus = {}
		
		self.frame = frame
		frame.obj = self
		frame:SetWidth(700)
		frame:SetHeight(500)
		frame:SetPoint("CENTER",UIParent,"CENTER",0,0)
		frame:EnableMouse()
		frame:SetMovable(true)
		frame:SetResizable(true)
		frame:SetFrameStrata("FULLSCREEN_DIALOG")
		frame:SetScript("OnMouseDown", frameOnMouseDown)
		
		frame:SetBackdrop(FrameBackdrop)
		frame:SetBackdropColor(0,0,0,1)
		frame:SetScript("OnHide",frameOnClose)
		frame:SetMinResize(400,200)
		frame:SetToplevel(true)
		
		local closebutton = CreateFrame("Button",nil,frame,"UIPanelButtonTemplate")
		closebutton:SetScript("OnClick", closeOnClick)
		closebutton:SetPoint("BOTTOMRIGHT",frame,"BOTTOMRIGHT",-27,17)
		closebutton:SetHeight(20)
		closebutton:SetWidth(100)
		closebutton:SetText(CLOSE)
		
		self.closebutton = closebutton
		closebutton.obj = self
		
		local statusbg = CreateFrame("Frame",nil,frame)
		statusbg:SetPoint("BOTTOMLEFT",frame,"BOTTOMLEFT",15,15)
		statusbg:SetPoint("BOTTOMRIGHT",frame,"BOTTOMRIGHT",-132,15)
		statusbg:SetHeight(24)
		statusbg:SetBackdrop(PaneBackdrop)
		statusbg:SetBackdropColor(0.1,0.1,0.1)
		statusbg:SetBackdropBorderColor(0.4,0.4,0.4)
		self.statusbg = statusbg
		
		local statustext = statusbg:CreateFontString(nil,"OVERLAY","GameFontNormal")
		self.statustext = statustext
		statustext:SetPoint("TOPLEFT",statusbg,"TOPLEFT",7,-2)
		statustext:SetPoint("BOTTOMRIGHT",statusbg,"BOTTOMRIGHT",-7,2)
		statustext:SetHeight(20)
		statustext:SetJustifyH("LEFT")
		statustext:SetText("")
		
		local title = CreateFrame("Frame",nil,frame)
		self.title = title
		title:EnableMouse()
		title:SetScript("OnMouseDown",titleOnMouseDown)
		title:SetScript("OnMouseUp", frameOnMouseUp)
		
		
		local titlebg = frame:CreateTexture(nil,"OVERLAY")
		titlebg:SetTexture("Interface\\DialogFrame\\UI-DialogBox-Header")
		titlebg:SetTexCoord(0.31,0.67,0,0.63)
		titlebg:SetPoint("TOP",frame,"TOP",0,12)
		titlebg:SetWidth(100)
		titlebg:SetHeight(40)

		local titlebg_l = frame:CreateTexture(nil,"OVERLAY")
		titlebg_l:SetTexture("Interface\\DialogFrame\\UI-DialogBox-Header")
		titlebg_l:SetTexCoord(0.21,0.31,0,0.63)
		titlebg_l:SetPoint("RIGHT",titlebg,"LEFT",0,0)
		titlebg_l:SetWidth(30)
		titlebg_l:SetHeight(40)
		
		local titlebg_right = frame:CreateTexture(nil,"OVERLAY")
		titlebg_right:SetTexture("Interface\\DialogFrame\\UI-DialogBox-Header")
		titlebg_right:SetTexCoord(0.67,0.77,0,0.63)
		titlebg_right:SetPoint("LEFT",titlebg,"RIGHT",0,0)
		titlebg_right:SetWidth(30)
		titlebg_right:SetHeight(40)
		
		title:SetAllPoints(titlebg)			
		local titletext = title:CreateFontString(nil,"OVERLAY","GameFontNormal")
		titletext:SetPoint("TOP",titlebg,"TOP",0,-14)
	
		self.titletext = titletext	
		
		local sizer_se = CreateFrame("Frame",nil,frame)
		sizer_se:SetPoint("BOTTOMRIGHT",frame,"BOTTOMRIGHT",0,0)
		sizer_se:SetWidth(25)
		sizer_se:SetHeight(25)
		sizer_se:EnableMouse()
		sizer_se:SetScript("OnMouseDown",sizerseOnMouseDown)
		sizer_se:SetScript("OnMouseUp", sizerOnMouseUp)
		self.sizer_se = sizer_se

		local line1 = sizer_se:CreateTexture(nil, "BACKGROUND")
		self.line1 = line1
		line1:SetWidth(14)
		line1:SetHeight(14)
		line1:SetPoint("BOTTOMRIGHT", -8, 8)
		line1:SetTexture("Interface\\Tooltips\\UI-Tooltip-Border")
		local x = 0.1 * 14/17
		line1:SetTexCoord(0.05 - x, 0.5, 0.05, 0.5 + x, 0.05, 0.5 - x, 0.5 + x, 0.5)

		local line2 = sizer_se:CreateTexture(nil, "BACKGROUND")
		self.line2 = line2
		line2:SetWidth(8)
		line2:SetHeight(8)
		line2:SetPoint("BOTTOMRIGHT", -8, 8)
		line2:SetTexture("Interface\\Tooltips\\UI-Tooltip-Border")
		local x = 0.1 * 8/17
		line2:SetTexCoord(0.05 - x, 0.5, 0.05, 0.5 + x, 0.05, 0.5 - x, 0.5 + x, 0.5)

		local sizer_s = CreateFrame("Frame",nil,frame)
		sizer_s:SetPoint("BOTTOMRIGHT",frame,"BOTTOMRIGHT",-25,0)
		sizer_s:SetPoint("BOTTOMLEFT",frame,"BOTTOMLEFT",0,0)
		sizer_s:SetHeight(25)
		sizer_s:EnableMouse()
		sizer_s:SetScript("OnMouseDown",sizersOnMouseDown)
		sizer_s:SetScript("OnMouseUp", sizerOnMouseUp)
		self.sizer_s = sizer_s
		
		local sizer_e = CreateFrame("Frame",nil,frame)
		sizer_e:SetPoint("BOTTOMRIGHT",frame,"BOTTOMRIGHT",0,25)
		sizer_e:SetPoint("TOPRIGHT",frame,"TOPRIGHT",0,0)
		sizer_e:SetWidth(25)
		sizer_e:EnableMouse()
		sizer_e:SetScript("OnMouseDown",sizereOnMouseDown)
		sizer_e:SetScript("OnMouseUp", sizerOnMouseUp)
		self.sizer_e = sizer_e
	
		--Container Support
		local content = CreateFrame("Frame",nil,frame)
		self.content = content
		content.obj = self
		content:SetPoint("TOPLEFT",frame,"TOPLEFT",17,-27)
		content:SetPoint("BOTTOMRIGHT",frame,"BOTTOMRIGHT",-17,40)
		
		AceGUI:RegisterAsContainer(self)
		return self	
	end
	
	AceGUI:RegisterWidgetType(Type,Constructor,Version)
end
