Chris Gregan
8 years ago
committed by
GitHub
13 changed files with 439 additions and 64 deletions
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using System.Collections.Generic; |
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using System; |
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namespace Fungus |
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{ |
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public class EventDispatcher |
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{ |
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public delegate void TypedDelegate<T>(T e) where T : class; |
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#region Statics |
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static EventDispatcher _instance; |
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public static EventDispatcher Instance |
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{ |
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get |
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{ |
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if(_instance == null) |
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{ |
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_instance = new EventDispatcher(); |
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} |
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return _instance; |
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} |
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} |
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public static void AddLog(Action<string> log) |
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{ |
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Instance.addLog(log); |
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} |
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public static void RemoveLog(Action<string> log) |
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{ |
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Instance.removeLog(log); |
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} |
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public static void AddListener<T>(TypedDelegate<T> listener) where T : class
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{ |
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Instance.addListener(listener); |
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} |
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public static void RemoveListener<T>(TypedDelegate<T> listener) where T : class
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{ |
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Instance.removeListener(listener); |
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} |
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public static void Raise<T>(T evt) where T : class
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{ |
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Instance.raise(evt); |
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} |
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public static void Raise<T>() where T : class, new() |
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{ |
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Instance.raise<T>(new T()); |
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} |
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public static void UnregisterAll() |
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{ |
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Instance.unregisterAll(); |
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} |
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#endregion |
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#region Private Members |
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readonly Dictionary<Type, List<Delegate>> _delegates; |
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event Action<string> _onLog; |
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#endregion |
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#region Private Functions |
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private EventDispatcher() |
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{ |
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_delegates = new Dictionary<Type, List<Delegate>>(); |
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} |
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/// <summary> |
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/// Gets the delegate list copy. |
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/// </summary> |
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/// <remarks> |
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/// As listener can modify the list while iterating it, it is better to iterate a copy of the delegates list instead of a reference. |
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/// </remarks> |
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/// <returns>A copy of the delegates list if found. Null if the dictionary does not contain a delegate list for this event.</returns> |
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/// <param name="evt">Event instance.</param> |
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/// <typeparam name="T">Type of the received event.</typeparam> |
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List<Delegate> getDelegateListCopy<T>(T evt) |
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{ |
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var type = typeof(T); |
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return _delegates.ContainsKey(type) ? new List<Delegate>(_delegates[type]) : null; |
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} |
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void log(string message) |
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{ |
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if(_onLog != null) |
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{ |
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_onLog(message); |
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} |
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} |
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#endregion |
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#region Public Functions |
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public void addLog(Action<string> log) |
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{ |
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_onLog += log; |
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} |
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public void removeLog(Action<string> log) |
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{ |
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_onLog -= log; |
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} |
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public void addListener<T>(TypedDelegate<T> listener) where T : class
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{ |
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var type = typeof(T); |
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if(!_delegates.ContainsKey(type)) |
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{ |
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_delegates.Add(type, new List<Delegate>()); |
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} |
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var list = _delegates[type]; |
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if(!list.Contains(listener)) |
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{ |
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list.Add(listener); |
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} |
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} |
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public void removeListener<T>(TypedDelegate<T> listener) where T : class
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{ |
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var type = typeof(T); |
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if(_delegates.ContainsKey(type)) |
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{ |
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_delegates[type].Remove(listener); |
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return; |
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} |
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} |
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public void raise<T>(T evt) where T : class
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{ |
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if(evt == null) |
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{ |
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log("Raised a null event"); |
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return; |
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} |
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var list = getDelegateListCopy(evt); |
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if(list == null || list.Count < 1) |
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{ |
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log("Raised an event with no listeners"); |
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return; |
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} |
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for(int i = 0; i < list.Count; ++i) |
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{ |
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var callback = list[i] as TypedDelegate<T>; |
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if(callback != null) |
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{ |
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try |
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{ |
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callback(evt); |
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} |
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catch(Exception gotcha) |
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{ |
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log(gotcha.Message); |
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} |
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} |
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} |
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} |
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public void raise<T>() where T : class, new() |
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{ |
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raise<T>(new T()); |
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} |
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public void unregisterAll() |
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{ |
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_delegates.Clear(); |
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} |
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#endregion |
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} |
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} |
@ -0,0 +1,12 @@
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fileFormatVersion: 2 |
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guid: d6bacc8888852c94bab5c3b36cdf1574 |
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timeCreated: 1483696929 |
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licenseType: Free |
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MonoImporter: |
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serializedVersion: 2 |
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defaultReferences: [] |
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executionOrder: 0 |
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icon: {instanceID: 0} |
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userData: |
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assetBundleName: |
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assetBundleVariant: |
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