Merge pull request #670 from stevehalliwell/MenuSignals

Added Fungus Signals for MenuDialog becoming active or inactive

Assets/Fungus/Scripts/Components/MenuDialog.cs

@@ -176,6 +176,10 @@ namespace Fungus
         {
             StopAllCoroutines();
 
+            //if something was shown notify that we are ending
+            if(nextOptionIndex != 0)
+                MenuSignals.DoMenuEnd(this);
+
             nextOptionIndex = 0;
 
             var optionButtons = CachedButtons;
@@ -292,8 +296,12 @@ namespace Fungus
             if (nextOptionIndex >= CachedButtons.Length)
                 return false;
 
-            var button = cachedButtons[nextOptionIndex];
+            //if first option notify that a menu has started
+            if(nextOptionIndex == 0)
+                MenuSignals.DoMenuStart(this);
 
+            var button = cachedButtons[nextOptionIndex];
+            
             //move forward for next call
             nextOptionIndex++;
 
@@ -314,7 +322,6 @@ namespace Fungus
             }
             button.onClick.AddListener(action);
             
-
             return true;
         }
 

Assets/Fungus/Scripts/Signals/MenuSignals.cs

@@ -0,0 +1,26 @@
+namespace Fungus
+{
+    /// <summary>
+    /// Menu change event signalling system.
+    /// You can use this to be notified about various events, actions and state changes of the Menu system.
+    /// </summary>
+    public static class MenuSignals
+    {
+        #region Public members
+
+        /// <summary>
+        /// MenuStart signal. Sent when a Menu is being shown, where previously there wasn't one.
+        /// </summary>
+        public static event MenuStartHandler OnMenuStart;
+        public delegate void MenuStartHandler(MenuDialog menu);
+        public static void DoMenuStart(MenuDialog menu) { if (OnMenuStart != null) OnMenuStart(menu); }
+
+        /// <summary>
+        /// MenuEnd signal. Sent when a Menu is no longer being shown, where previously there was one.
+        /// </summary>
+        public static event MenuEndHandler OnMenuEnd;
+        public delegate void MenuEndHandler(MenuDialog menu);
+        public static void DoMenuEnd(MenuDialog menu) { if (OnMenuEnd != null) OnMenuEnd(menu); }
+        #endregion
+    }
+}

Assets/Fungus/Scripts/Signals/MenuSignals.cs.meta

@@ -0,0 +1,13 @@
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