extends Panel

var current_tab = -1

const MENU = [
	{ menu="File", command="new_material", description="New material" },
	{ menu="File", command="load_material", description="Load material" },
	{ menu="File" },
	{ menu="File", command="save_material", description="Save material" },
	{ menu="File", command="save_material_as", description="Save material as..." },
	{ menu="File", command="save_all_materials", description="Save all materials..." },
	{ menu="File" },
	{ menu="File", command="export_material", description="Export material" },
	{ menu="File" },
	{ menu="File", command="close_material", description="Close material" },
	{ menu="File", command="exit", description="Exit" },
	{ menu="Help", command="about", description="About" }
]

func _ready():
	for m in $VBoxContainer/Menu.get_children():
		create_menu(m.get_popup(), m.name)

func create_menu(menu, menu_name):
	menu.connect("id_pressed", self, "_on_PopupMenu_id_pressed")
	for i in MENU.size():
		if MENU[i].menu != menu_name:
			continue
		if MENU[i].has("submenu"):
			var submenu = PopupMenu.new()
			create_menu(submenu, MENU[i].submenu)
			menu.add_child(submenu)
			menu.add_submenu_item(MENU[i].description, submenu.get_name())
		elif MENU[i].has("description"):
			menu.add_item(MENU[i].description, i)
		else:
			menu.add_separator()
	return menu

func new_material():
	var graph_edit = preload("res://addons/procedural_material/graph_edit.tscn").instance()
	$VBoxContainer/HBoxContainer/Projects.add_child(graph_edit)
	$VBoxContainer/HBoxContainer/Projects.current_tab = graph_edit.get_index()
	graph_edit.update_tab_title()

func load_material():
	var dialog = FileDialog.new()
	add_child(dialog)
	dialog.rect_min_size = Vector2(500, 500)
	dialog.access = FileDialog.ACCESS_FILESYSTEM
	dialog.mode = FileDialog.MODE_OPEN_FILE
	dialog.add_filter("*.ptex;Procedural textures file")
	dialog.connect("file_selected", self, "do_load_material")
	dialog.popup_centered()

func do_load_material(filename):
	var graph_edit = preload("res://addons/procedural_material/graph_edit.tscn").instance()
	$VBoxContainer/HBoxContainer/Projects.add_child(graph_edit)
	$VBoxContainer/HBoxContainer/Projects.current_tab = graph_edit.get_index()
	graph_edit.do_load_file(filename)

func save_material():
	$VBoxContainer/HBoxContainer/Projects.get_current_tab_control().save_file()
	
func save_material_as():
	$VBoxContainer/HBoxContainer/Projects.get_current_tab_control().save_file_as()

func close_material():
	$VBoxContainer/HBoxContainer/Projects.get_current_tab_control().queue_free()

func exit():
	queue_free()
	
func _on_PopupMenu_id_pressed(id):
	var node_type = null
	if MENU[id].has("command"):
		call(MENU[id].command)

func update_preview():
	var material_node = $VBoxContainer/HBoxContainer/Projects.get_current_tab_control().get_node("Material")
	if material_node != null:
		material_node.update_materials($VBoxContainer/HBoxContainer/VBoxContainer/Preview.get_materials())

func _on_Projects_tab_changed(tab):
	$VBoxContainer/HBoxContainer/Projects.get_current_tab_control().connect("graph_changed", self, "update_preview")
	current_tab = tab