A presentation model (view model) interface for WPF and Silverlight

IPresentationModel.cs

using System;
using System.ComponentModel;
using System.Windows.Input;
using Foundation.Client.Views;

namespace Foundation.Client.PresentationModels
{
    /// <summary>
    /// Common interface for all presentation layer models.
    /// </summary>
    public interface IPresentationModel : IHeaderInfoProvider<string>, INotifyPropertyChanged
    {
        #region properties

        /// <summary>
        /// Gets the broken rules.
        /// </summary>
        /// <value>The broken rules.</value>
        BrokenRuleCollection BrokenRules { get; set; }

        /// <summary>
        /// Gets a value indicating whether this instance can close.
        /// </summary>
        /// <value><c>true</c> if this instance can close; otherwise, <c>false</c>.</value>
        bool CanClose { get; }

        /// <summary>
        /// Gets or sets a value indicating whether this instance can submit changes.
        /// </summary>
        /// <value><c>true</c> if this instance can submit changes; otherwise, <c>false</c>.</value>
        bool CanSubmitChanges { get; set; }

        /// <summary>
        /// Gets the close view command.
        /// </summary>
        /// <value>The close view command.</value>
        ICommand CloseViewCommand { get; }

        /// <summary>
        /// Gets or sets a value indicating whether to hide buttons when inside a wizard.
        /// </summary>
        /// <value><c>true</c> if buttons should be hidden; otherwise, <c>false</c>.</value>
        bool HideButtons { get; set; }

        /// <summary>
        /// Gets a value indicating whether this instance is dirty.
        /// </summary>
        /// <value><c>true</c> if this instance is dirty; otherwise, <c>false</c>.</value>
        bool IsDirty { get; }

        /// <summary>
        /// Gets a value indicating whether this instance is editable.
        /// </summary>
        /// <value>
        /// 	<c>true</c> if this instance is editable; otherwise, <c>false</c>.
        /// </value>
        bool IsEditable { get; set; }

        /// <summary>
        /// Gets or sets the key used to identify active views.
        /// </summary>
        /// <value>The key.</value>
        string Key { get; set; }

        /// <summary>
        /// Gets the show view command.
        /// </summary>
        /// <value>The show view command.</value>
        ICommand ShowViewCommand { get; }

        /// <summary>
        /// Gets or sets the view.
        /// </summary>
        /// <value>The view.</value>
        IView View { get; set; }

        #endregion

        #region events

        /// <summary>
        /// Occurs when the presentation model is closed.
        /// </summary>
        event EventHandler<EventArgs> Closed;

        #endregion

        #region methods

        /// <summary>
        /// Closes the view.
        /// </summary>
        void CloseView();

        /// <summary>
        /// Refreshes this instance.
        /// </summary>
        void Refresh();

        /// <summary>
        /// Shows the view inside the specified <paramref name="region" />.
        /// </summary>
        /// <param name="region">The region.</param>
        void ShowView(IRegion region);

        #endregion
    }
}