add unit test and finish operator test

BallanceTASEditor/Core/ClipboardUtil.cs

@@ -0,0 +1,71 @@
+using BallanceTASEditor.Core.TASStruct;
+using System;
+using System.Collections.Generic;
+using System.IO;
+using System.Linq;
+using System.Text;
+using System.Windows;
+
+namespace BallanceTASEditor.Core {
+    public class ClipboardUtil {
+
+        // comes from https://stackoverflow.com/questions/22272822/copy-binary-data-to-clipboard
+
+        private static readonly string CLIPBOARD_DATA_FORMAT = "BallanceTASFrameData";
+        public static bool SetFrameData(LinkedList<FrameData> ls) {
+            try {
+                DataObject data = new DataObject();
+                using (var mem = new MemoryStream()) {
+                    mem.Write(BitConverter.GetBytes(ls.Count), 0, 4);
+
+                    var node = ls.First;
+                    while (node != null) {
+                        mem.Write(BitConverter.GetBytes(node.Value.deltaTime), 0, 4);
+                        mem.Write(BitConverter.GetBytes(node.Value.keystates), 0, 4);
+                        node = node.Next;
+                    }
+
+                    data.SetData(CLIPBOARD_DATA_FORMAT, mem, false);
+                    Clipboard.SetDataObject(data, true);
+                }
+                return true;
+#if DEBUG
+            } catch (Exception e) {
+#else
+            } catch {
+#endif
+                return false;
+            }
+        }
+
+        public static bool GetFrameData(LinkedList<FrameData> ls) {
+            try {
+                // detect
+                DataObject retrievedData = Clipboard.GetDataObject() as DataObject;
+                if (retrievedData == null || !retrievedData.GetDataPresent(CLIPBOARD_DATA_FORMAT))
+                    return false;
+                MemoryStream byteStream = retrievedData.GetData(CLIPBOARD_DATA_FORMAT) as MemoryStream;
+                if (byteStream == null)
+                    return false;
+
+                // read
+                byteStream.Seek(0, SeekOrigin.Begin);
+                byte[] temp = new byte[8];
+                byteStream.Read(temp, 0, 4);
+                int count = BitConverter.ToInt32(temp, 0);
+
+                for (int i = 0; i < count; i++) {
+                    ls.AddLast(new FrameData(byteStream));
+                }
+
+                return true;
+#if DEBUG
+            } catch (Exception e) {
+#else
+            } catch {
+#endif
+                return false;
+            }
+        } 
+    }
+}