InputModule.cs

//======= Copyright (c) Valve Corporation, All rights reserved. ===============
//
// Purpose: Makes the hand act as an input module for Unity's event system
//
//=============================================================================

using UnityEngine;
using System.Collections;
using UnityEngine.EventSystems;

namespace Valve.VR.InteractionSystem
{
    //-------------------------------------------------------------------------
    public class InputModule : BaseInputModule
    {
        private GameObject submitObject;

        //-------------------------------------------------
        private static InputModule _instance;
        public static InputModule instance
        {
            get
            {
                if ( _instance == null )
                    _instance = GameObject.FindObjectOfType<InputModule>();

                return _instance;
            }
        }


        //-------------------------------------------------
        public override bool ShouldActivateModule()
        {
            if ( !base.ShouldActivateModule() )
                return false;

            return submitObject != null;
        }


        //-------------------------------------------------
        public void HoverBegin( GameObject gameObject )
        {
            PointerEventData pointerEventData = new PointerEventData( eventSystem );
            ExecuteEvents.Execute( gameObject, pointerEventData, ExecuteEvents.pointerEnterHandler );
        }


        //-------------------------------------------------
        public void HoverEnd( GameObject gameObject )
        {
            PointerEventData pointerEventData = new PointerEventData( eventSystem );
            pointerEventData.selectedObject = null;
            ExecuteEvents.Execute( gameObject, pointerEventData, ExecuteEvents.pointerExitHandler );
        }


        //-------------------------------------------------
        public void Submit( GameObject gameObject )
        {
            submitObject = gameObject;
        }


        //-------------------------------------------------
        public override void Process()
        {
            if ( submitObject )
            {
                BaseEventData data = GetBaseEventData();
                data.selectedObject = submitObject;
                ExecuteEvents.Execute( submitObject, data, ExecuteEvents.submitHandler );

                submitObject = null;
            }
        }
    }
}