--[[------------------------------------------------
	-- Love Frames - A GUI library for LOVE --
	-- Copyright (c) 2012-2014 Kenny Shields --
--]]------------------------------------------------

-- get the current require path
local path = string.sub(..., 1, string.len(...) - string.len(".objects.collapsiblecategory"))
local loveframes = require(path .. ".libraries.common")

-- collapsiblecategory object
local newobject = loveframes.NewObject("collapsiblecategory", "loveframes_object_collapsiblecategory", true)

--[[---------------------------------------------------------
	- func: initialize()
	- desc: initializes the object
--]]---------------------------------------------------------
function newobject:initialize()

	self.type = "collapsiblecategory"
	self.text = "Category"
	self.width = 200
	self.height = 25
	self.closedheight = 25
	self.padding = 5
	self.internal = false
	self.open = false
	self.down = false
	self.children = {}
	self.OnOpenedClosed = nil
	
end

--[[---------------------------------------------------------
	- func: update(deltatime)
	- desc: updates the object
--]]---------------------------------------------------------
function newobject:update(dt)
	
	local state = loveframes.state
	local selfstate = self.state
	
	if state ~= selfstate then
		return
	end
	
	local visible = self.visible
	local alwaysupdate = self.alwaysupdate
	
	if not visible then
		if not alwaysupdate then
			return
		end
	end
	
	local open = self.open
	local children = self.children
	local curobject = children[1]
	local parent = self.parent
	local base = loveframes.base
	local update = self.Update
	
	self:CheckHover()
	
	-- move to parent if there is a parent
	if parent ~= base and parent.type ~= "list" then
		self.x = self.parent.x + self.staticx
		self.y = self.parent.y + self.staticy
	end
	
	if open and curobject then
		curobject:SetWidth(self.width - self.padding * 2)
		curobject:update(dt)
	elseif not open and curobject then
		if curobject:GetVisible() then
			curobject:SetVisible(false)
		end
	end
	
	if update then
		update(self, dt)
	end

end

--[[---------------------------------------------------------
	- func: draw()
	- desc: draws the object
--]]---------------------------------------------------------
function newobject:draw()
	
	local state = loveframes.state
	local selfstate = self.state
	
	if state ~= selfstate then
		return
	end
	
	local visible = self.visible
	
	if not visible then
		return
	end
	
	local open = self.open
	local children = self.children
	local curobject = children[1]
	local skins = loveframes.skins.available
	local skinindex = loveframes.config["ACTIVESKIN"]
	local defaultskin = loveframes.config["DEFAULTSKIN"]
	local selfskin = self.skin
	local skin = skins[selfskin] or skins[skinindex]
	local drawfunc = skin.DrawCollapsibleCategory or skins[defaultskin].DrawCollapsibleCategory
	local draw = self.Draw
	local drawcount = loveframes.drawcount
	
	-- set the object's draw order
	self:SetDrawOrder()
		
	if draw then
		draw(self)
	else
		drawfunc(self)
	end
	
	if open and curobject then
		curobject:draw()
	end
	
end

--[[---------------------------------------------------------
	- func: mousepressed(x, y, button)
	- desc: called when the player presses a mouse button
--]]---------------------------------------------------------
function newobject:mousepressed(x, y, button)

	local state = loveframes.state
	local selfstate = self.state
	
	if state ~= selfstate then
		return
	end
	
	local visible = self.visible
	
	if not visible then
		return
	end
	
	local hover = self.hover
	local open = self.open
	local children = self.children
	local curobject = children[1]
	
	if hover then
		local col = loveframes.util.BoundingBox(self.x, x, self.y, y, self.width, 1, self.closedheight, 1)
		if button == 1 and col then
			local baseparent = self:GetBaseParent()
			if baseparent and baseparent.type == "frame" then
				baseparent:MakeTop()
			end
			self.down = true
			loveframes.downobject = self
		end
	end
	
	if open and curobject then
		curobject:mousepressed(x, y, button)
	end
	
end

--[[---------------------------------------------------------
	- func: mousereleased(x, y, button)
	- desc: called when the player releases a mouse button
--]]---------------------------------------------------------
function newobject:mousereleased(x, y, button)
	
	local state = loveframes.state
	local selfstate = self.state
	
	if state ~= selfstate then
		return
	end
	
	local visible = self.visible
	
	if not visible then
		return
	end
	
	local hover = self.hover
	local down = self.down
	local clickable = self.clickable
	local enabled = self.enabled
	local open = self.open
	local col = loveframes.util.BoundingBox(self.x, x, self.y, y, self.width, 1, self.closedheight, 1)
	local children = self.children
	local curobject = children[1]
	
	if hover and col and down and button == 1 then
		if open then
			self:SetOpen(false)
		else
			self:SetOpen(true)
		end
		self.down = false
	end
	
	if open and curobject then
		curobject:mousereleased(x, y, button)
	end

end

--[[---------------------------------------------------------
	- func: SetText(text)
	- desc: sets the object's text
--]]---------------------------------------------------------
function newobject:SetText(text)

	self.text = text
	return self
	
end

--[[---------------------------------------------------------
	- func: GetText()
	- desc: gets the object's text
--]]---------------------------------------------------------
function newobject:GetText()

	return self.text
	
end

--[[---------------------------------------------------------
	- func: SetObject(object)
	- desc: sets the category's object
--]]---------------------------------------------------------
function newobject:SetObject(object)
	
	local children = self.children
	local curobject = children[1]
	
	if curobject then
		curobject:Remove()
		self.children = {}
	end
	
	object:Remove()
	object.parent = self
	object:SetState(self.state)
	object:SetWidth(self.width - self.padding*2)
	object:SetPos(self.padding, self.closedheight + self.padding)
	table.insert(self.children, object)
	
	return self
	
end

--[[---------------------------------------------------------
	- func: SetObject(object)
	- desc: sets the category's object
--]]---------------------------------------------------------
function newobject:GetObject()

	local children = self.children
	local curobject = children[1]
	
	if curobject then
		return curobject
	else
		return false
	end
	
end

--[[---------------------------------------------------------
	- func: SetSize(width, height, relative)
	- desc: sets the object's size
--]]---------------------------------------------------------
function newobject:SetSize(width, height, relative)

	if relative then
		self.width = self.parent.width * width
	else
		self.width = width
	end
	
	return self
	
end

--[[---------------------------------------------------------
	- func: SetHeight(height)
	- desc: sets the object's height
--]]---------------------------------------------------------
function newobject:SetHeight(height)

	return self
	
end

--[[---------------------------------------------------------
	- func: SetClosedHeight(height)
	- desc: sets the object's closed height
--]]---------------------------------------------------------
function newobject:SetClosedHeight(height)

	self.closedheight = height
	return self
	
end

--[[---------------------------------------------------------
	- func: GetClosedHeight()
	- desc: gets the object's closed height
--]]---------------------------------------------------------
function newobject:GetClosedHeight()

	return self.closedheight
	
end

--[[---------------------------------------------------------
	- func: SetOpen(bool)
	- desc: sets whether the object is opened or closed
--]]---------------------------------------------------------
function newobject:SetOpen(bool)

	local children = self.children
	local curobject = children[1]
	local closedheight = self.closedheight
	local padding = self.padding
	local onopenedclosed = self.OnOpenedClosed
	
	self.open = bool
	
	if not bool then
		self.height = closedheight
		if curobject then
			local curobjectheight = curobject.height
			curobject:SetVisible(false)
		end
	else
		if curobject then
			local curobjectheight = curobject.height
			self.height = closedheight + padding * 2 + curobjectheight
			curobject:SetVisible(true)
		end
	end
	
	-- call the on opened closed callback if it exists
	if onopenedclosed then
		onopenedclosed(self)
	end
	
	return self
	
end

--[[---------------------------------------------------------
	- func: GetOpen()
	- desc: gets whether the object is opened or closed
--]]---------------------------------------------------------
function newobject:GetOpen()

	return self.open

end