change UI to UI.WinForms

Pilz.UI.WinForms/PaintingControl/PaintingObjectListLayering.cs

@@ -0,0 +1,87 @@
+using System;
+using System.Collections.Generic;
+using System.Data;
+using System.Linq;
+
+namespace Pilz.UI.WinForms.PaintingControl;
+
+public class PaintingObjectListLayering
+{
+
+
+    public PaintingObjectList ObjectList { get; private set; }
+    public Dictionary<int, Func<PaintingObject, bool>> Conditions { get; private set; } = new Dictionary<int, Func<PaintingObject, bool>>();
+
+    /// <summary>
+    /// Get the order function will checkout the conditions.
+    /// </summary>
+    /// <returns>Returns true, if conditions are aviable, otherwise false.</returns>
+    public bool EnableConditions
+    {
+        get
+        {
+            return Conditions.Any();
+        }
+    }
+
+    /// <summary>
+    /// Create a new instance of object list layer managing.
+    /// </summary>
+    /// <param name="list"></param>
+    public PaintingObjectListLayering(PaintingObjectList list)
+    {
+        ObjectList = list;
+    }
+
+    /// <summary>
+    /// Order all objects using the conditions. If no conditions are setted, this method will do nothing.
+    /// </summary>
+    public void OrderAll()
+    {
+        if (EnableConditions)
+            OrderAllPrivate();
+    }
+
+    private void OrderAllPrivate()
+    {
+        var list = ObjectList;
+        var listOld = list.ToList();
+        var toRemove = new List<PaintingObject>();
+
+        // Disable raising events
+        ObjectList.EnableRaisingEvents = false;
+
+        // Clear list
+        list.Clear();
+
+        // Add ordered
+        foreach (var kvp in Conditions.OrderBy(n => n.Key))
+        {
+            var func = kvp.Value;
+
+            foreach (var obj in listOld)
+            {
+                if (func(obj))
+                {
+                    // Add to list
+                    list.Add(obj);
+
+                    // Add to remove
+                    toRemove.Add(obj);
+                }
+            }
+
+            // Remove remembered objects
+            foreach (var obj in toRemove)
+                listOld.Remove(obj);
+            toRemove.Clear();
+        }
+
+        // Enable raising events
+        ObjectList.EnableRaisingEvents = true;
+
+        // Refresh
+        ObjectList.MyParent?.Refresh();
+    }
+
+}