ViewModelActionItem.cs

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// Copyright (c) 2014 Silicon Studio Corp. (http://siliconstudio.co.jp)
// This file is distributed under GPL v3. See LICENSE.md for details.
using System;
using System.Collections.Generic;
using System.Linq;

using SiliconStudio.ActionStack;

namespace SiliconStudio.Presentation.ViewModel.ActionStack
{
    /// <summary>
    /// An abstact class that inherits from <see cref="ActionItem"/> and can be used to manage actions related to an <see cref="IDirtiableViewModel"/> 
    /// </summary>
    public abstract class ViewModelActionItem : ActionItem
    {
        private readonly List<IDirtiableViewModel> dirtiables;
        private bool isSaved;

        /// <summary>
        /// Initializes a new instance of the <see cref="ViewModelActionItem"/> class with the specified name and dirtiable object.
        /// </summary>
        /// <param name="name">The name of the action item.</param>
        /// <param name="dirtiables">The dirtiable objects associated to this action item.</param>
        protected ViewModelActionItem(string name, IEnumerable<IDirtiableViewModel> dirtiables)
            : base(name)
        {
            if (dirtiables == null) throw new ArgumentNullException("dirtiables");
            this.dirtiables = dirtiables.ToList();
        }

        /// <summary>
        /// Gets the dirtiable view modle associated to this object, or <c>null</c> if no dirtiable is associated.
        /// </summary>
        public IReadOnlyCollection<IDirtiableViewModel> Dirtiables { get { return dirtiables; } }

        /// <inheritdoc/>
        public override bool IsSaved { get { return isSaved; } set { if (isSaved != value) { isSaved = value; dirtiables.ForEach(x => x.NotifyActionStackChange(ActionStackChange.Save)); } } }

        /// <inheritdoc/>
        public override bool IsDone { get { return base.IsDone; } protected set { base.IsDone = value; dirtiables.ForEach(x => x.NotifyActionStackChange(ActionStackChange.UndoRedo)); } }
    }
}