Add nullable context to SabreTools.DatItems

This change also starts migrating the internals of the DatItem formats to the new internal models. Right now, it's basically just acting like a wrapper around those models.

SabreTools.DatItems/Formats/DipValue.cs

@@ -0,0 +1,129 @@
+using System.Collections.Generic;
+using System.Linq;
+using System.Xml.Serialization;
+using Newtonsoft.Json;
+using SabreTools.Core;
+
+namespace SabreTools.DatItems.Formats
+{
+    /// <summary>
+    /// Represents one ListXML dipvalue
+    /// </summary>
+    [JsonObject("dipvalue"), XmlRoot("dipvalue")]
+    public class DipValue : DatItem
+    {
+        #region Fields
+
+        /// <summary>
+        /// Setting name
+        /// </summary>
+        [JsonProperty("name"), XmlElement("name")]
+        public string? Name
+        {
+            get => _dipValue.ReadString(Models.Internal.DipValue.NameKey);
+            set => _dipValue[Models.Internal.DipValue.NameKey] = value;
+        }
+
+        /// <summary>
+        /// Setting value
+        /// </summary>
+        [JsonProperty("value", DefaultValueHandling = DefaultValueHandling.Ignore), XmlElement("value")]
+        public string? Value
+        {
+            get => _dipValue.ReadString(Models.Internal.DipValue.ValueKey);
+            set => _dipValue[Models.Internal.DipValue.ValueKey] = value;
+        }
+
+        /// <summary>
+        /// Determines if the setting is default or not
+        /// </summary>
+        [JsonProperty("default", DefaultValueHandling = DefaultValueHandling.Ignore), XmlElement("default")]
+        public bool? Default
+        {
+            get => _dipValue.ReadBool(Models.Internal.DipValue.DefaultKey);
+            set => _dipValue[Models.Internal.DipValue.DefaultKey] = value;
+        }
+
+        [JsonIgnore]
+        public bool DefaultSpecified { get { return Default != null; } }
+
+        /// <summary>
+        /// List of conditions on the setting
+        /// </summary>
+        [JsonProperty("conditions", DefaultValueHandling = DefaultValueHandling.Ignore), XmlElement("conditions")]
+        public List<Condition>? Conditions
+        {
+            get => _dipValue.Read<Condition[]>(Models.Internal.DipValue.ConditionKey)?.ToList();
+            set => _dipValue[Models.Internal.DipValue.ConditionKey] = value?.ToArray();
+        }
+
+        [JsonIgnore]
+        public bool ConditionsSpecified { get { return Conditions != null && Conditions.Count > 0; } }
+
+        /// <summary>
+        /// Internal DipValue model
+        /// </summary>
+        [JsonIgnore]
+        private Models.Internal.DipValue _dipValue = new();
+
+        #endregion
+
+        #region Accessors
+
+        /// <inheritdoc/>
+        public override string? GetName() => Name;
+
+        /// <inheritdoc/>
+        public override void SetName(string? name) => Name = name;
+
+        #endregion
+
+        #region Constructors
+
+        /// <summary>
+        /// Create a default, empty DipValue object
+        /// </summary>
+        public DipValue()
+        {
+            Name = string.Empty;
+            ItemType = ItemType.DipValue;
+        }
+
+        #endregion
+
+        #region Cloning Methods
+
+        /// <inheritdoc/>
+        public override object Clone()
+        {
+            return new DipValue()
+            {
+                ItemType = this.ItemType,
+                DupeType = this.DupeType,
+
+                Machine = this.Machine?.Clone() as Machine,
+                Source = this.Source?.Clone() as Source,
+                Remove = this.Remove,
+
+                _dipValue = this._dipValue?.Clone() as Models.Internal.DipValue ?? new Models.Internal.DipValue(),
+            };
+        }
+
+        #endregion
+
+        #region Comparision Methods
+
+        /// <inheritdoc/>
+        public override bool Equals(DatItem? other)
+        {
+            // If we don't have a DipValue, return false
+            if (ItemType != other?.ItemType || other is not DipValue otherInternal)
+                return false;
+
+            // Compare the internal models
+            return _dipValue.EqualTo(otherInternal._dipValue);
+        }
+
+        #endregion
+    }
+}