Umbraco-CMS/src/Umbraco.Core/Models/ContentStatus.cs

using System;
using System.Runtime.Serialization;

namespace Umbraco.Core.Models
{
    /// <summary>
    /// Describes the states of a document, with regard to (schedule) publishing.
    /// </summary>
    [Serializable]
    [DataContract]
    public enum ContentStatus
    {
        // typical flow:
        // Unpublished (add release date)-> AwaitingRelease (release)-> Published (expire)-> Expired

        /// <summary>
        /// The document is not trashed, and not published. 
        /// </summary>
        [EnumMember]
        Unpublished,

        /// <summary>
        /// The document is published.
        /// </summary>
        [EnumMember]
        Published,

        /// <summary>
        /// The document is not trashed, not published, after being unpublished by a scheduled action.
        /// </summary>
        [EnumMember]
        Expired,

        /// <summary>
        /// The document is trashed.
        /// </summary>
        [EnumMember]
        Trashed,

        /// <summary>
        /// The document is not trashed, not published, and pending publication by a scheduled action.
        /// </summary>
        [EnumMember]
        AwaitingRelease
    }
}