local PANEL = {}

DEFINE_BASECLASS( "DScrollPanel" )

AccessorFunc( PANEL, "m_pControllerPanel",			"ControllerPanel" )
AccessorFunc( PANEL, "m_strCategoryName",			"CategoryName" )
AccessorFunc( PANEL, "m_bTriggerSpawnlistChange",	"TriggerSpawnlistChange" )

--[[---------------------------------------------------------
	Name: Init
-----------------------------------------------------------]]
function PANEL:Init()

	self:SetPaintBackground( false )

	self.IconList = vgui.Create( "DTileLayout", self:GetCanvas() )
	self.IconList:SetBaseSize( 64 )
	self.IconList:MakeDroppable( "SandboxContentPanel", true )
	self.IconList:SetSelectionCanvas( true )
	--self.IconList:SetUseLiveDrag( true )
	self.IconList:Dock( TOP )
	self.IconList.OnModified = function() self:OnModified() end

end

function PANEL:Add( pnl )

	self.IconList:Add( pnl )

	if ( pnl.InstallMenu ) then
		pnl:InstallMenu( self )
	end

	self:Layout()

end

function PANEL:Layout()

	self.IconList:Layout()
	self:InvalidateLayout()

end

function PANEL:PerformLayout()

	BaseClass.PerformLayout( self )
	self.IconList:SetMinHeight( self:GetTall() - 16 )

end

--[[---------------------------------------------------------
	Name: RebuildAll
-----------------------------------------------------------]]
function PANEL:RebuildAll( proppanel )

	local items = self.IconList:GetChildren()

	for k, v in pairs( items ) do

		v:RebuildSpawnIcon()

	end

end

--[[---------------------------------------------------------
	Name: GetCount
-----------------------------------------------------------]]
function PANEL:GetCount()

	local items = self.IconList:GetChildren()
	return #items

end

function PANEL:Clear()

	self.IconList:Clear( true )

end

function PANEL:SetTriggerSpawnlistChange( bTrigger )

	self.m_bTriggerSpawnlistChange = bTrigger
	self.IconList:SetReadOnly( !bTrigger )

end

function PANEL:OnModified()

	if ( !self:GetTriggerSpawnlistChange() ) then return end

	hook.Run( "SpawnlistContentChanged" )

end

function PANEL:ContentsToTable( contentpanel )

	local tab = {}

	local items = self.IconList:GetChildren()

	for k, v in pairs( items ) do

		v:ToTable( tab )

	end

	return tab

end

function PANEL:Copy()

	local copy = vgui.Create( "ContentContainer", self:GetParent() )
	copy:CopyBase( self )

	copy.IconList:CopyContents( self.IconList )

	return copy

end

vgui.Register( "ContentContainer", PANEL, "DScrollPanel" )

hook.Add( "SpawnlistOpenGenericMenu", "SpawnlistOpenGenericMenu", function( canvas )

	if ( canvas:GetReadOnly() ) then return end

	local selected = canvas:GetSelectedChildren()

	local menu = DermaMenu()
	menu:AddOption( "#spawnmenu.menu.delete", function()

		for k, v in pairs( selected ) do
			v:Remove()
		end

		hook.Run( "SpawnlistContentChanged" )

	end ):SetIcon( "icon16/bin_closed.png" )

	menu:Open()

end )