Tabs

ui/component/TabMenu.gd

@@ -0,0 +1,43 @@
+class_name TabMenu extends Control
+
+@export var tabs:TabBar
+@export var tabControls:Array[Control]
+
+func _ready() -> void:
+  tabs.tab_changed.connect(_onTabChanged)
+  _onTabChanged(tabs.current_tab)
+
+func _notification(what:int) -> void:
+  if what == NOTIFICATION_VISIBILITY_CHANGED and visible:
+    tabs.grab_focus()
+
+func _input(event:InputEvent) -> void:
+  if !is_visible_in_tree():
+    return
+  if event.is_action_pressed("tab_next"):
+    tabs.current_tab = (tabs.current_tab + 1) % tabs.tab_count
+    get_viewport().set_input_as_handled()
+  elif event.is_action_pressed("tab_prev"):
+    tabs.current_tab = (tabs.current_tab - 1 + tabs.tab_count) % tabs.tab_count
+    get_viewport().set_input_as_handled()
+  elif tabs.has_focus() and event.is_action_pressed("ui_accept"):
+    var idx:int = tabs.current_tab
+    if idx >= 0 and idx < tabControls.size() and _focusFirstIn(tabControls[idx]):
+      get_viewport().set_input_as_handled()
+
+func _onTabChanged(tabIndex:int) -> void:
+  for control in tabControls:
+    control.visible = false
+  if tabIndex >= 0 and tabIndex < tabControls.size():
+    tabControls[tabIndex].visible = true
+
+func _focusFirstIn(container:Control) -> bool:
+  for child in container.get_children():
+    if not child is Control:
+      continue
+    if child.focus_mode != Control.FOCUS_NONE and child.is_visible_in_tree():
+      child.grab_focus()
+      return true
+    if _focusFirstIn(child):
+      return true
+  return false