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path: root/game/src/OptionMenu/ResolutionSelector.gd
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extends SettingOptionButton

# REQUIREMENTS
# * UIFUN-21
# * UIFUN-28
# * UIFUN-301
# * UIFUN-302

@export
var default_value : Vector2i = Resolution.error_resolution

var previous_resolution : Vector2i = Resolution.error_resolution
@export var revert_dialog : ConfirmationDialog
@export var timer : Timer

func _find_resolution_index_by_value(value : Vector2i) -> int:
   for item_index in item_count:
      if get_item_metadata(item_index) == value:
         return item_index
   return -1

func _sync_resolutions(to_select : Vector2i = Resolution.get_current_resolution()) -> void:
   clear()
   default_selected = -1
   selected = -1
   for resolution_value in Resolution.get_resolution_value_list():
      add_item(Resolution.get_resolution_display_name(resolution_value))
      set_item_metadata(item_count - 1, resolution_value)

      if resolution_value == default_value:
         default_selected = item_count - 1

      if resolution_value == to_select:
         selected = item_count - 1

   if default_selected == -1:
      default_selected = item_count - 1

   if selected == -1:
      selected = default_selected

func _setup_button():
   if default_value.x <= 0:
      default_value.x = ProjectSettings.get_setting("display/window/size/viewport_width")
   if default_value.y <= 0:
      default_value.y = ProjectSettings.get_setting("display/window/size/viewport_height")
   Resolution.add_resolution(default_value, &"default")
   _sync_resolutions()

func _get_value_for_file(select_value : int):
   if _valid_index(select_value):
      return get_item_metadata(select_value)
   else:
      return null

func _set_value_from_file(load_value):
   var target_resolution := Resolution.error_resolution
   match typeof(load_value):
      TYPE_VECTOR2I: target_resolution = load_value
      TYPE_STRING, TYPE_STRING_NAME: target_resolution = Resolution.get_resolution_value_from_string(load_value)
   if target_resolution != Resolution.error_resolution:
      selected = _find_resolution_index_by_value(target_resolution)
      if selected != -1: return
      if Resolution.add_resolution(target_resolution):
         _sync_resolutions(target_resolution)
         return
   push_error("Setting value '%s' invalid for setting [%s] %s" % [load_value, section_name, setting_name])
   selected = default_selected

func _on_item_selected(index : int):
   if _valid_index(index):
      previous_resolution = Resolution.get_current_resolution()
      Resolution.set_resolution(get_item_metadata(index))
      var new_resolution = get_item_metadata(index)
      
      #has_focus() indicates the user is calling _on_item_selected, not some other function
      if has_focus() and previous_resolution != new_resolution:
         print("Start Revert Countdown!")
         start_revert_countdown()
   else:
      push_error("Invalid ResolutionSelector index: %d" % index)
      reset_setting()

func _process(_delta):
   revert_dialog.dialog_text = tr("OPTIONS_VIDEO_RESOLUTION_DIALOG_TEXT").format({"time":round(timer.time_left)})

func start_revert_countdown() -> void:
   timer.start()
   revert_dialog.popup_centered(Vector2(1,1))
   
func _on_confirmed() -> void:
   timer.stop()

func _cancel_changes() -> void:
   Resolution.set_resolution(previous_resolution)
   _sync_resolutions()
   print("Resolution reset to (%dx%d)" % [previous_resolution.x,previous_resolution.y])
   timer.stop()
   revert_dialog.hide()