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Added Image Cropper datatype

[TFS Changeset #55169]

components/editorControls/imagecropper/SmartListBox.cs

@@ -0,0 +1,47 @@
+using System.Web.UI.WebControls;
+
+namespace umbraco.editorControls.imagecropper
+{
+    public class SmartListBox : ListBox
+    {
+        //Moves the selected items up one level
+        public void MoveUp()
+        {
+
+            for (int i = 0; i < Items.Count; i++)
+            {
+                if (Items[i].Selected)//identify the selected item
+                {
+                    //swap with the top item(move up)
+                    if (i > 0 && !Items[i - 1].Selected)
+                    {
+                        ListItem bottom = Items[i];
+                        Items.Remove(bottom);
+                        Items.Insert(i - 1, bottom);
+                        Items[i - 1].Selected = true;
+                    }
+                }
+            }
+        }
+        //Moves the selected items one level down
+        public void MoveDown()
+        {
+            int startindex = Items.Count - 1;
+            for (int i = startindex; i > -1; i--)
+            {
+                if (Items[i].Selected)//identify the selected item
+                {
+                    //swap with the lower item(move down)
+                    if (i < startindex && !Items[i + 1].Selected)
+                    {
+                        ListItem bottom = Items[i];
+                        Items.Remove(bottom);
+                        Items.Insert(i + 1, bottom);
+                        Items[i + 1].Selected = true;
+                    }
+
+                }
+            }
+        }
+    }
+}