65 lines
2.2 KiB
C#
65 lines
2.2 KiB
C#
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//Author: Melang http://forum.unity3d.com/members/melang.593409/
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//Updated omatase 10-18-14 - support for Shift + Tab as well
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// - bug fix to prevent crash if no control selected
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// - updated to support new semantics for EventSystem in later 4.6 builds
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// - autoselect "firstSelectedGameObject" since it doesn't seem to work automatically
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using UnityEngine;
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using UnityEngine.UI;
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using UnityEngine.EventSystems;
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using System.Collections;
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public class TabNavigationHelper : MonoBehaviour
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{
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private EventSystem _system;
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void Start()
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{
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_system = EventSystem.current;
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}
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public void Update()
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{
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Selectable next = null;
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if (Input.GetKeyDown(KeyCode.Tab) && Input.GetKey(KeyCode.LeftShift))
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{
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if (_system.currentSelectedGameObject != null)
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{
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next = _system.currentSelectedGameObject.GetComponent<Selectable>().FindSelectableOnUp();
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}
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else
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{
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next = _system.firstSelectedGameObject.GetComponent<Selectable>();
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}
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}
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else if (Input.GetKeyDown(KeyCode.Tab))
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{
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if (_system.currentSelectedGameObject != null)
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{
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next = _system.currentSelectedGameObject.GetComponent<Selectable>().FindSelectableOnDown();
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}
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else
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{
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next = _system.firstSelectedGameObject.GetComponent<Selectable>();
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}
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}
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else if (_system.currentSelectedGameObject == null)
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{
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next = _system.firstSelectedGameObject.GetComponent<Selectable>();
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}
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selectGameObject(next);
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}
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private void selectGameObject(Selectable selectable)
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{
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if (selectable != null)
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{
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InputField inputfield = selectable.GetComponent<InputField>();
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if (inputfield != null) inputfield.OnPointerClick(new PointerEventData(_system)); //if it's an input field, also set the text caret
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_system.SetSelectedGameObject(selectable.gameObject, new BaseEventData(_system));
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}
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}
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}
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