FCC/Extension/GlobalPumpFdc/WayneLibraries/StateEngineG/StateChangedEventArgs.cs

using System;

namespace Wayne.Lib.StateEngine
{
    /// <summary>
    /// Argument in the StateChanged events. It contains the new and the old state in a state transition.
    /// </summary>
    public class StateChangedEventArgs : EventArgs
    {
        #region Fields

        State oldState;
        State newState;
        Transition transition;

        #endregion

        #region Construction

        /// <summary>
        /// Constructor for the StateChanged Event Arguments
        /// </summary>
        /// <param name="oldState">The State object representing the state that was exited.</param>
        /// <param name="newState">The State object representing the state that was entered.</param>
        /// <param name="transition">The Transition.</param>
        public StateChangedEventArgs(State oldState, State newState, Transition transition)
        {
            this.oldState = oldState;
            this.newState = newState;
            this.transition = transition;
        }

        #endregion

        #region Properties

        /// <summary>
        /// The state that is exited
        /// </summary>
        public State OldState
        {
            get { return oldState; }
        }

        /// <summary>
        /// The new state that is entered.
        /// </summary>
        public State NewState
        {
            get { return newState; }
        }

        /// <summary>
        /// The Transition.
        /// </summary>
        public Transition Transition
        {
            get { return transition; }
        }

        #endregion
    }
}