update

Packages/app.rive.rive-unity/Runtime/DataBinding/Values/ViewModelInstanceTriggerProperty.cs

@@ -0,0 +1,61 @@
+using System;
+using System.Runtime.InteropServices;
+using Rive.Utils;
+
+namespace Rive
+{
+    /// <summary>
+    /// A view model instance property for trigger properties.
+    /// </summary>
+    public sealed class ViewModelInstanceTriggerProperty : ViewModelInstancePrimitiveProperty
+    {
+        internal ViewModelInstanceTriggerProperty(IntPtr instanceValuePtr, ViewModelInstance rootInstance) : base(instanceValuePtr, rootInstance)
+        {
+        }
+
+        /// <summary>
+        /// Raised when the trigger property is fired in the Rive graphic.
+        /// </summary>
+        public event Action OnTriggered
+        {
+            add => AddPropertyCallback(value, ref m_onTriggered);
+            remove => RemovePropertyCallback(value, ref m_onTriggered);
+        }
+        private Action m_onTriggered;
+
+        /// <summary>
+        /// Fires the trigger
+        /// </summary>
+        public void Trigger()
+        {
+            ThrowIfOwnerDisposed();
+
+            if (InstancePropertyPtr == IntPtr.Zero)
+            {
+                DebugLogger.Instance.LogWarning("Trying to trigger a null trigger property.");
+                return;
+            }
+
+            fireViewModelInstanceTrigger(InstancePropertyPtr);
+        }
+
+        [DllImport(NativeLibrary.name)]
+        private static extern void fireViewModelInstanceTrigger(IntPtr instanceProperty);
+
+        internal override void RaiseChangedEvent()
+        {
+            m_onTriggered?.Invoke();
+        }
+
+        internal override void ClearAllCallbacks()
+        {
+            m_onTriggered = null;
+            base.ClearAllCallbacks();
+        }
+
+        internal override void ClearDelegatesOnly()
+        {
+            m_onTriggered = null;
+        }
+    }
+}