1 files changed, 159 insertions, 0 deletions
diff --git a/Assets/uGUI-2017.1/UnityEngine.UI/EventSystem/EventHandler/EventTrigger.cs b/Assets/uGUI-2017.1/UnityEngine.UI/EventSystem/EventHandler/EventTrigger.cs
new file mode 100644
index 0000000..11d1c1c
--- /dev/null
+++ b/Assets/uGUI-2017.1/UnityEngine.UI/EventSystem/EventHandler/EventTrigger.cs
@@ -0,0 +1,159 @@
+using System;
+using System.Collections.Generic;
+using UnityEngine.Events;
+using UnityEngine.Serialization;
+
+namespace UnityEngine.EventSystems
+{
+    //c 一个辅助组件，给一个事件添加自定义的回调函数
+    //继承了所有接口，效率不高，慎用。只是比较方便 
+
+    [AddComponentMenu("Event/Event Trigger")]
+    public class EventTrigger :
+        MonoBehaviour,
+        IPointerEnterHandler,
+        IPointerExitHandler,
+        IPointerDownHandler,
+        IPointerUpHandler,
+        IPointerClickHandler,
+        IInitializePotentialDragHandler,
+        IBeginDragHandler,
+        IDragHandler,
+        IEndDragHandler,
+        IDropHandler,
+        IScrollHandler,
+        IUpdateSelectedHandler,
+        ISelectHandler,
+        IDeselectHandler,
+        IMoveHandler,
+        ISubmitHandler,
+        ICancelHandler
+    {
+        [Serializable]
+        public class TriggerEvent : UnityEvent<BaseEventData>
+        {}
+
+        [Serializable]
+        public class Entry
+        {
+            public EventTriggerType eventID = EventTriggerType.PointerClick;
+            public TriggerEvent callback = new TriggerEvent();
+        }
+
+        [FormerlySerializedAs("delegates")]
+        [SerializeField]
+        private List<Entry> m_Delegates;
+
+        [Obsolete("Please use triggers instead (UnityUpgradable) -> triggers", true)]
+        public List<Entry> delegates;
+
+        protected EventTrigger()
+        {}
+
+        public List<Entry> triggers
+        {
+            get
+            {
+                if (m_Delegates == null)
+                    m_Delegates = new List<Entry>();
+                return m_Delegates;
+            }
+            set { m_Delegates = value; }
+        }
+
+        private void Execute(EventTriggerType id, BaseEventData eventData)
+        {
+            for (int i = 0, imax = triggers.Count; i < imax; ++i)
+            {
+                var ent = triggers[i];
+                if (ent.eventID == id && ent.callback != null)
+                    ent.callback.Invoke(eventData);
+            }
+        }
+
+        public virtual void OnPointerEnter(PointerEventData eventData)
+        {
+            Execute(EventTriggerType.PointerEnter, eventData);
+        }
+
+        public virtual void OnPointerExit(PointerEventData eventData)
+        {
+            Execute(EventTriggerType.PointerExit, eventData);
+        }
+
+        public virtual void OnDrag(PointerEventData eventData)
+        {
+            Execute(EventTriggerType.Drag, eventData);
+        }
+
+        public virtual void OnDrop(PointerEventData eventData)
+        {
+            Execute(EventTriggerType.Drop, eventData);
+        }
+
+        public virtual void OnPointerDown(PointerEventData eventData)
+        {
+            Execute(EventTriggerType.PointerDown, eventData);
+        }
+
+        public virtual void OnPointerUp(PointerEventData eventData)
+        {
+            Execute(EventTriggerType.PointerUp, eventData);
+        }
+
+        public virtual void OnPointerClick(PointerEventData eventData)
+        {
+            Execute(EventTriggerType.PointerClick, eventData);
+        }
+
+        public virtual void OnSelect(BaseEventData eventData)
+        {
+            Execute(EventTriggerType.Select, eventData);
+        }
+
+        public virtual void OnDeselect(BaseEventData eventData)
+        {
+            Execute(EventTriggerType.Deselect, eventData);
+        }
+
+        public virtual void OnScroll(PointerEventData eventData)
+        {
+            Execute(EventTriggerType.Scroll, eventData);
+        }
+
+        public virtual void OnMove(AxisEventData eventData)
+        {
+            Execute(EventTriggerType.Move, eventData);
+        }
+
+        public virtual void OnUpdateSelected(BaseEventData eventData)
+        {
+            Execute(EventTriggerType.UpdateSelected, eventData);
+        }
+
+        public virtual void OnInitializePotentialDrag(PointerEventData eventData)
+        {
+            Execute(EventTriggerType.InitializePotentialDrag, eventData);
+        }
+
+        public virtual void OnBeginDrag(PointerEventData eventData)
+        {
+            Execute(EventTriggerType.BeginDrag, eventData);
+        }
+
+        public virtual void OnEndDrag(PointerEventData eventData)
+        {
+            Execute(EventTriggerType.EndDrag, eventData);
+        }
+
+        public virtual void OnSubmit(BaseEventData eventData)
+        {
+            Execute(EventTriggerType.Submit, eventData);
+        }
+
+        public virtual void OnCancel(BaseEventData eventData)
+        {
+            Execute(EventTriggerType.Cancel, eventData);
+        }
+    }
+}