1 files changed, 124 insertions, 0 deletions
diff --git a/grapher/Models/Options/OffsetOptions.cs b/grapher/Models/Options/OffsetOptions.cs
new file mode 100644
index 0000000..0b01ab9
--- /dev/null
+++ b/grapher/Models/Options/OffsetOptions.cs
@@ -0,0 +1,124 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.Windows.Forms;
+
+namespace grapher.Models.Options
+{
+    public class OffsetOptions
+    {
+        public OffsetOptions(
+            ToolStripMenuItem velocityGainOffsetCheck,
+            ToolStripMenuItem legacyOffsetCheck,
+            Option offsetOption)
+        {
+            VelocityGainOffsetCheck = velocityGainOffsetCheck;
+            LegacyOffsetCheck = legacyOffsetCheck;
+            OffsetOption = offsetOption;
+
+            VelocityGainOffsetCheck.Click += new System.EventHandler(OnVelocityGainOffsetClick);
+            LegacyOffsetCheck.Click += new System.EventHandler(OnLegacyOffsetClick);
+
+            VelocityGainOffsetCheck.CheckedChanged += new System.EventHandler(OnVelocityGainOffsetCheckedChange);
+            LegacyOffsetCheck.CheckedChanged += new System.EventHandler(OnLegacyOffsetCheckedChange);
+
+            VelocityGainOffsetCheck.Checked = true;
+        }
+
+        public ToolStripMenuItem VelocityGainOffsetCheck { get; }
+
+        public ToolStripMenuItem LegacyOffsetCheck { get; }
+
+        public Option OffsetOption { get; }
+
+        public bool IsLegacy { get; private set; }
+
+        public double LegacyOffset 
+        { 
+            get
+            {
+                if (IsLegacy)
+                {
+                    return OffsetOption.Field.Data;
+                }
+                else
+                {
+                    return 0;
+                }
+            } 
+        }
+
+        public double Offset
+        {
+            get
+            {
+                if (IsLegacy)
+                {
+                    return 0;
+                }
+                else
+                {
+                    return OffsetOption.Field.Data;
+                }
+            }
+        }
+
+        public void SetActiveValue(double offset, double legacyOffset)
+        {
+            if (offset > 0)
+            {
+                OffsetOption.SetActiveValue(offset);
+            }
+            else
+            {
+                OffsetOption.SetActiveValue(legacyOffset);
+            }
+        }
+
+        public void OnVelocityGainOffsetClick(object sender, EventArgs e)
+        {
+            if (!VelocityGainOffsetCheck.Checked)
+            {
+                VelocityGainOffsetCheck.Checked = true;
+                LegacyOffsetCheck.Checked = false;
+            }
+        }
+
+        public void OnLegacyOffsetClick(object sender, EventArgs e)
+        {
+            if (!LegacyOffsetCheck.Checked)
+            {
+                LegacyOffsetCheck.Checked = true;
+                VelocityGainOffsetCheck.Checked = false;
+            }
+        }
+
+        public void OnVelocityGainOffsetCheckedChange(object sender, EventArgs e)
+        {
+            if (VelocityGainOffsetCheck.Checked)
+            {
+                EnableVelocityGainOffset();
+            }
+        }
+
+        public void OnLegacyOffsetCheckedChange(object sender, EventArgs e)
+        {
+            if (LegacyOffsetCheck.Checked)
+            {
+                EnableLegacyOffset();
+            }
+        }
+
+        public void EnableVelocityGainOffset()
+        {
+            IsLegacy = false;
+        }
+
+        public void EnableLegacyOffset()
+        {
+            IsLegacy = true;
+        }
+    }
+}