102 lines
1.9 KiB
C#
102 lines
1.9 KiB
C#
using System.Collections;
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using System.Collections.Generic;
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using System.Text;
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using System;
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using System.Linq;
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namespace Rokojori
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{
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public class EventSlot<T>
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{
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protected List<Action<T>> _actions = new List<Action<T>>();
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List<Action<T>> _once = new List<Action<T>>();
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protected bool _canModify = true;
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List<Action<T>> _additions = new List<Action<T>>();
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List<Action<T>> _onceAdditions = new List<Action<T>>();
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List<Action<T>> _removals = new List<Action<T>>();
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public bool hasListeners => _once.Count > 0 || _actions.Count > 0;
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public void AddAction( Action<T> action )
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{
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if ( _canModify )
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{
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_actions.Add( action );
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}
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else
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{
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_additions.Add( action );
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}
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}
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public void RemoveAction( Action<T> action )
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{
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if ( _canModify )
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{
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_actions.Remove( action );
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}
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else
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{
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_removals.Add( action );
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}
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}
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public void Once( Action<T> action )
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{
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if ( _canModify )
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{
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_actions.Add( action );
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_once.Add( action );
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}
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else
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{
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_onceAdditions.Add( action );
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}
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}
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protected void _UpdateLists()
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{
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_once.ForEach( a => { _actions.Remove( a ); } );
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_once.Clear();
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if ( _removals.Count > 0 )
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{
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Lists.RemoveRange( _actions, _removals );
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_removals.Clear();
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}
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if ( _additions.Count > 0 )
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{
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_actions.AddRange( _additions );
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_additions.Clear();
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}
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if ( _onceAdditions.Count > 0 )
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{
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_once.AddRange( _onceAdditions );
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_actions.AddRange( _onceAdditions );
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}
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}
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public void DispatchEvent( T t )
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{
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_canModify = false;
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_actions.ForEach( a => { if ( a != null ){ a( t ); } } );
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_UpdateLists();
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_canModify = true;
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}
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}
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}
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