79 lines
1.9 KiB
C#
79 lines
1.9 KiB
C#
using System;
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using System.Collections.Generic;
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using System.ComponentModel;
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using System.Linq;
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using System.Text;
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namespace TShockAPI
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{
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public class HandlerList : HandlerList<EventArgs>
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{
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}
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public class HandlerList<T> where T : EventArgs
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{
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protected class HandlerObject
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{
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public EventHandler<T> Handler { get; set; }
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public HandlerPriority Priority { get; set; }
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public bool GetHandled { get; set; }
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}
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protected object HandlerLock = new object();
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protected List<HandlerObject> Handlers { get; set; }
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public HandlerList()
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{
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Handlers = new List<HandlerObject>();
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}
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/// <summary>
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/// Register a handler
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/// </summary>
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/// <param name="handler">Delegate to be called</param>
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/// <param name="priority">Priority of the delegate</param>
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/// <param name="gethandled">Should the handler receive a call even if it has been handled</param>
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public void Register(EventHandler<T> handler, HandlerPriority priority = HandlerPriority.Normal, bool gethandled = false)
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{
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lock (HandlerLock)
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{
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Handlers.Add(new HandlerObject { Handler = handler, Priority = priority, GetHandled = gethandled });
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Handlers = Handlers.OrderBy(h => (int)h.Priority).ToList();
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}
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}
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public void UnRegister(EventHandler<T> handler)
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{
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lock (HandlerLock)
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{
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Handlers.RemoveAll(h => h.Handler.Equals(handler));
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}
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}
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public void Invoke(object sender, T e)
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{
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List<HandlerObject> handlers;
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lock (HandlerLock)
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{
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//Copy the list for invoking as to not keep it locked during the invokes
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handlers = new List<HandlerObject>(Handlers);
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}
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var hargs = e as HandledEventArgs;
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for (int i = 0; i < handlers.Count; i++)
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{
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if (hargs == null || !hargs.Handled || (hargs.Handled && handlers[i].GetHandled))
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{
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handlers[i].Handler(sender, e);
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}
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}
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}
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}
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public enum HandlerPriority
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{
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Highest = 1,
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High = 2,
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Normal = 3,
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Low = 4,
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Lowest = 5,
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}
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}
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