TAStudio - implement the Cut menu item

BizHawk.Client.Common/movie/tasproj/TasMovie.Editing.cs

@@ -47,5 +47,20 @@ namespace BizHawk.Client.Common
 			LagLog.RemoveRange(frame + 1, LagLog.Count - frame - 1);
 			StateManager.Invalidate(frame + 1);
 		}
+
+		public void RemoveFrames(int[] frames)
+		{
+			if (frames.Any())
+			{
+				var truncateStatesTo = frames.Min(x => x);
+				foreach (var frame in frames.OrderByDescending(x => x)) // Removin them in reverse order allows us to remove by index;
+				{
+					_log.RemoveAt(frame);
+				}
+
+				StateManager.Invalidate(truncateStatesTo);
+				Changes = true;
+			}
+		}
 	}
 }

BizHawk.Client.EmuHawk/tools/TAStudio/TAStudio.Designer.cs

@@ -347,11 +347,11 @@ namespace BizHawk.Client.EmuHawk
 			// 
 			// CutMenuItem
 			// 
-			this.CutMenuItem.Enabled = false;
 			this.CutMenuItem.Name = "CutMenuItem";
 			this.CutMenuItem.ShortcutKeys = ((System.Windows.Forms.Keys)((System.Windows.Forms.Keys.Control | System.Windows.Forms.Keys.X)));
 			this.CutMenuItem.Size = new System.Drawing.Size(240, 22);
 			this.CutMenuItem.Text = "&Cut";
+			this.CutMenuItem.Click += new System.EventHandler(this.CutMenuItem_Click);
 			// 
 			// toolStripSeparator8
 			// 

BizHawk.Client.EmuHawk/tools/TAStudio/TAStudio.cs

@@ -400,6 +400,30 @@ namespace BizHawk.Client.EmuHawk
 			SetSplicer();
 		}
 
+		private void CutMenuItem_Click(object sender, EventArgs e)
+		{
+			_tasClipboard.Clear();
+			var list = TasView.SelectedIndices
+				.OfType<int>()
+				.ToArray();
+			var sb = new StringBuilder();
+			for (var i = 0; i < list.Length; i++)
+			{
+				var input = _tas.GetInputState(i);
+				_tasClipboard.Add(new TasClipboardEntry(list[i], input));
+				var lg = _tas.LogGeneratorInstance();
+				lg.SetSource(input);
+				sb.AppendLine(lg.GenerateLogEntry());
+			}
+
+			Clipboard.SetDataObject(sb.ToString());
+
+			_tas.RemoveFrames(list);
+
+			SetSplicer();
+			RefreshDialog();
+		}
+
 		#endregion
 
 		#region Config