include("config.lua")
AddCSLuaFile("config.lua")

local PANEL = {}

AccessorFunc( PANEL, "ActiveButton", "ActiveButton" )

function PANEL:Init()

    self.Navigation = vgui.Create( "DScrollPanel", self )
    self.Navigation:Dock( TOP )
    self.Navigation:SetHeight( 40 )
    self.Navigation:DockMargin( 10, 10, 10, 10 )

    self.Content = vgui.Create( "Panel", self )
    self.Content:Dock( FILL )

    self.Items = {}

end

function PANEL:UseButtonOnlyStyle()
    self.ButtonOnly = true
end

function PANEL:AddSheet( label, panel, material )

    if ( !IsValid( panel ) ) then return end

    local Sheet = {}

    if ( self.ButtonOnly ) then
        Sheet.Button = vgui.Create( "DImageButton", self.Navigation )
    else
        Sheet.Button = vgui.Create( "DButton", self.Navigation )
    end

    Sheet.Button:SetImage( material )
    Sheet.Button.Target = panel
    Sheet.Button:Dock( TOP )
    Sheet.Button:SetText( label )
    Sheet.Button:DockMargin( 4, 1, 0, 4 )
	Sheet.Button:SetWidth( 100 )
    Sheet.Button.Paint = function(self, w, h)
        surface.SetDrawColor(F4Config.ButtonColor)
        surface.DrawRect( 0, 0, w, h )
        surface.SetDrawColor(F4Config.OutlineButtonColor)
        surface.DrawOutlinedRect( 0, 0, w, h )

end

    Sheet.Button.DoClick = function()
        self:SetActiveButton( Sheet.Button )
    end

    Sheet.Panel = panel
    Sheet.Panel:SetParent( self.Content )
    Sheet.Panel:SetVisible( false )

    if ( self.ButtonOnly ) then
        Sheet.Button:SizeToContents()
        --Sheet.Button:SetColor( Color( 150, 150, 150, 100 ) )
    end

    table.insert( self.Items, Sheet )

    if ( !IsValid( self.ActiveButton ) ) then
        self:SetActiveButton( Sheet.Button )
    end

end

function PANEL:SetActiveButton( active )

    if ( self.ActiveButton == active ) then return end

    if ( self.ActiveButton && self.ActiveButton.Target ) then
        self.ActiveButton.Target:SetVisible( false )
        self.ActiveButton:SetSelected( false )
        self.ActiveButton:SetToggle( false )
    end

    self.ActiveButton = active
    active.Target:SetVisible( true )
    active:SetSelected( true )
    active:SetToggle( true )

    self.Content:InvalidateLayout()

end

derma.DefineControl( "CSDColSheet", "", PANEL, "Panel" )