class_name MusicListPanel
extends PanelContainer
## The list of songs in the playlist, one row per song.

## Emitted when the row of song number [param song_no] is clicked.
signal song_clicked(song_no: int)

var _song_list_object: PackedScene = preload("res://song_list_object.tscn")

@onready
var _rows: VBoxContainer = $ScrollContainer/MusicList


## Shows the songs in the playlist again, so it shows their latest state.
func refresh() -> void:
	Settings.delete_children(_rows)
	for s: SongObject in Playlist.get_playlist():
		var new_song_list_object: SongListObject = _song_list_object.instantiate()
		new_song_list_object.song_object = s
		new_song_list_object.gui_input.connect(_on_row_input.bind(s.song_number))
		_rows.add_child(new_song_list_object)


func _on_row_input(event: InputEvent, song_no: int) -> void:
	if event is InputEventMouseButton && event.pressed && event.button_index == MOUSE_BUTTON_LEFT:
		song_clicked.emit(song_no)