// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
// See the LICENSE file in the project root for more information.
 
 
using System.ComponentModel;
using System.Windows.Markup;
using System.Windows.Media.Animation;
 
namespace System.Windows
{
    /// <summary>
    /// Defines a transition between VisualStates.
    /// </summary>
    [ContentProperty("Storyboard")]
    public class VisualTransition : DependencyObject
    {
        public VisualTransition()
        {
            DynamicStoryboardCompleted = true;
            ExplicitStoryboardCompleted = true;
        }
 
        /// <summary>
        /// Name of the state to transition from.
        /// </summary>
        public string From 
        { 
            get; 
            set; 
        }
 
        /// <summary>
        /// Name of the state to transition to.
        /// </summary>
        public string To 
        { 
            get; 
            set; 
        }
 
        /// <summary>
        /// Storyboard providing fine grained control of the transition.
        /// </summary>
        public Storyboard Storyboard 
        { 
            get; 
            set; 
        }
 
        /// <summary>
        /// Duration of the transition.
        /// </summary>
        [TypeConverter(typeof(System.Windows.DurationConverter))]
        public Duration GeneratedDuration 
        { 
            get { return _generatedDuration; } 
            set { _generatedDuration = value; } 
        }
 
        /// <summary>
        /// Easing Function for the transition
        /// </summary>
        public IEasingFunction GeneratedEasingFunction
        {
            get;
            set;
        }
 
        internal bool IsDefault
        {
            get { return From == null && To == null; }
        }
 
        internal bool DynamicStoryboardCompleted
        {
            get;
            set;
        }
 
        internal bool ExplicitStoryboardCompleted
        {
            get;
            set;
        }
 
        private Duration _generatedDuration = new Duration(new TimeSpan());
    }
}