added lots of ui functionality

About.cs

@@ -1,10 +1,4 @@
-using System;
-using System.Collections.Generic;
-using System.ComponentModel;
-using System.Data;
-using System.Drawing;
-using System.Text;
-using System.Windows.Forms;
+using System.Windows.Forms;
 
 namespace NBTExplorer
 {

DataNode.cs

@@ -0,0 +1,32 @@
+namespace NBTExplorer
+{
+    public class DataNode
+    {
+        public DataNode()
+        {
+        }
+
+        public DataNode(DataNode parent)
+        {
+            Parent = parent;
+        }
+
+        public DataNode Parent { get; set; }
+
+        private bool _modified;
+        public bool Modified
+        {
+            get { return _modified; }
+            set
+            {
+                if (value && Parent != null)
+                {
+                    Parent.Modified = value;
+                }
+                _modified = value;
+            }
+        }
+
+        public bool Expanded { get; set; }
+    }
+}

DirectoryData.cs

@@ -0,0 +1,18 @@
+namespace NBTExplorer
+{
+    public class DirectoryData : DataNode
+    {
+        public DirectoryData(string path)
+            : this(null, path)
+        {
+        }
+
+        public DirectoryData(DataNode parent, string path)
+            : base(parent)
+        {
+            Path = path;
+        }
+
+        public string Path { get; private set; }
+    }
+}

EditValue.cs

@@ -1,9 +1,5 @@
 using System;
-using System.Collections.Generic;
-using System.ComponentModel;
-using System.Data;
-using System.Drawing;
-using System.Text;
+using System.Collections.Generic;
 using System.Windows.Forms;
 using Substrate.Nbt;
 
@@ -17,11 +13,11 @@ public enum EditValueType
 
     public partial class EditValue : Form
     {
-        private string _name;
-        private TagNode _tag;
-        private EditValueType _type;
+        string _name;
+        readonly TagNode _tag;
+        readonly EditValueType _type;
 
-        private List<string> _invalidNames = new List<string>();
+        readonly List<string> _invalidNames = new List<string>();
 
         public EditValue (TagNode tag)
         {

Find.cs

@@ -1,9 +1,4 @@
-using System;
-using System.Collections.Generic;
-using System.ComponentModel;
-using System.Data;
-using System.Drawing;
-using System.Text;
+using System;
 using System.Windows.Forms;
 
 namespace NBTExplorer