StephaneLenclud@234: //
StephaneLenclud@234: using System;
StephaneLenclud@234: using System.Collections.Generic;
StephaneLenclud@234: using System.ComponentModel;
StephaneLenclud@234: using System.Linq;
StephaneLenclud@234: using System.Reflection;
StephaneLenclud@234: using System.Runtime.Serialization;
StephaneLenclud@234: using SharpLib.Utils;
StephaneLenclud@234: 
StephaneLenclud@235: 
StephaneLenclud@234: namespace SharpLib.Ear
StephaneLenclud@234: {
StephaneLenclud@234:     /// <summary>
StephaneLenclud@234:     /// Event Action Router (Ear) is a generic and extensible framework allowing users to execute actions in response to events. 
StephaneLenclud@234:     /// Users can implement their own events and actions.
StephaneLenclud@234:     /// </summary>
StephaneLenclud@234:     [DataContract]
Stephane@243:     public class Manager: Object
StephaneLenclud@234:     {
StephaneLenclud@234:         /// <summary>
StephaneLenclud@234:         /// Our events instances.
StephaneLenclud@234:         /// </summary>
StephaneLenclud@234:         [DataMember]
StephaneLenclud@234:         public List<Event> Events;
StephaneLenclud@234: 
StephaneLenclud@234: 
StephaneLenclud@234:         /// <summary>
StephaneLenclud@234:         /// Executes after internalization took place.
StephaneLenclud@234:         /// </summary>
Stephane@243:         protected override void DoConstruct()
StephaneLenclud@234:         {
Stephane@243:             base.DoConstruct();
Stephane@243: 
StephaneLenclud@234:             if (Events == null)
StephaneLenclud@234:             {
StephaneLenclud@234:                 Events = new List<Event>();
StephaneLenclud@234:             }
Stephane@243: 
Stephane@243:             // TODO: Object properties should be constructed too
Stephane@243:             foreach (Event e in Events)
Stephane@243:             {
Stephane@243:                 e.Construct();
Stephane@243:             }
StephaneLenclud@234:             
StephaneLenclud@234:         }
StephaneLenclud@234: 
StephaneLenclud@234:         /// <summary>
StephaneLenclud@234:         /// Trigger the given event.
StephaneLenclud@234:         /// </summary>
StephaneLenclud@234:         /// <param name="aEventType"></param>
StephaneLenclud@260:         public async void TriggerEvents<T>() where T: class
StephaneLenclud@234:         {
StephaneLenclud@234:             //Only trigger enabled events matching the desired type
StephaneLenclud@234:             foreach (Event e in Events.Where(e => e.GetType() == typeof(T) && e.Enabled))
StephaneLenclud@234:             {
StephaneLenclud@260:                 await e.Trigger();
StephaneLenclud@234:             }
StephaneLenclud@234:         }
StephaneLenclud@234: 
StephaneLenclud@237:         /// <summary>
StephaneLenclud@237:         /// Trigger the given event.
StephaneLenclud@237:         /// </summary>
StephaneLenclud@237:         /// <param name="aEventType"></param>
StephaneLenclud@260:         public async void TriggerEvents<T>(T aEvent) where T : class
StephaneLenclud@237:         {
StephaneLenclud@237:             //Only trigger events matching the desired type
StephaneLenclud@237:             foreach (Event e in Events.Where(e => e.Equals(aEvent) && e.Enabled))
StephaneLenclud@237:             {
StephaneLenclud@260:                 await e.Trigger();
StephaneLenclud@237:             }
StephaneLenclud@237:         }
StephaneLenclud@237: 
StephaneLenclud@260:         /// <summary>
StephaneLenclud@260:         /// 
StephaneLenclud@260:         /// </summary>
StephaneLenclud@260:         /// <typeparam name="T"></typeparam>
StephaneLenclud@260:         /// <param name="aEvent"></param>
StephaneLenclud@260:         public async void TriggerEventsByName(string aName)
StephaneLenclud@260:         {
StephaneLenclud@260:             if (string.IsNullOrEmpty(aName))
StephaneLenclud@260:             {
StephaneLenclud@262:                 //Just don't do that, that would be silly
StephaneLenclud@260:                 return;
StephaneLenclud@260:             }
StephaneLenclud@262:             // Only trigger events matching the desired type
StephaneLenclud@262:             // Doing some safety checks as well to prevent crashing if name was left null for some reason
StephaneLenclud@262:             // This was the case when loading existing settings after event Name was introduced
Stephane@267:             foreach (Event e in Events.Where(e => !string.IsNullOrEmpty(e.Name) && e.Enabled && aName.Equals(e.Name)))
StephaneLenclud@260:             {
StephaneLenclud@260:                 await e.Trigger();
StephaneLenclud@260:             }
StephaneLenclud@260:         }
StephaneLenclud@260: 
StephaneLenclud@260: 
StephaneLenclud@260: 
StephaneLenclud@234: 
StephaneLenclud@234:         /// <summary>
StephaneLenclud@234:         /// Remove the specified action from the event it belongs too.
StephaneLenclud@234:         /// </summary>
StephaneLenclud@234:         /// <param name="aAction"></param>
StephaneLenclud@234:         public void RemoveAction(Action aAction)
StephaneLenclud@234:         {
StephaneLenclud@234:             foreach (Event e in Events)
StephaneLenclud@234:             {
StephaneLenclud@265:                 if (RemoveObject(e,aAction))
StephaneLenclud@234:                 {
StephaneLenclud@234:                     //We removed our action, we are done here.
StephaneLenclud@234:                     return;
StephaneLenclud@234:                 }
StephaneLenclud@234:             }
StephaneLenclud@234:         }
StephaneLenclud@265: 
StephaneLenclud@265:         /// <summary>
StephaneLenclud@265:         /// Remove the specified action from the event it belongs too.
StephaneLenclud@265:         /// </summary>
StephaneLenclud@265:         /// <param name="aAction"></param>
StephaneLenclud@265:         private static bool RemoveObject(Object aCurrent, Object aToRemove)
StephaneLenclud@265:         {
StephaneLenclud@265:             //Exit condition
StephaneLenclud@265:             if (aCurrent.Objects.Remove(aToRemove))
StephaneLenclud@265:             {
StephaneLenclud@265:                 //We removed our action, we are done here.
StephaneLenclud@265:                 return true;
StephaneLenclud@265:             }
StephaneLenclud@265: 
StephaneLenclud@265:             foreach (Object o in aCurrent.Objects)
StephaneLenclud@265:             {
StephaneLenclud@265:                 bool done = RemoveObject(o, aToRemove);
StephaneLenclud@265:                 if (done)
StephaneLenclud@265:                 {
StephaneLenclud@265:                     return true;
StephaneLenclud@265:                 } 
StephaneLenclud@265:             }
StephaneLenclud@265: 
StephaneLenclud@265:             return false;
StephaneLenclud@265:         }
StephaneLenclud@265: 
StephaneLenclud@234:     }
StephaneLenclud@234: }