1 files changed, 137 insertions, 0 deletions
diff --git a/grapher/Models/Options/LockableOption.cs b/grapher/Models/Options/LockableOption.cs
new file mode 100644
index 0000000..6e78783
--- /dev/null
+++ b/grapher/Models/Options/LockableOption.cs
@@ -0,0 +1,137 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.Windows.Forms;
+
+namespace grapher.Models.Options
+{
+    /// <summary>
+    /// This is an option type that is a regular option with a checkbox that disables it.
+    /// </summary>
+    public class LockableOption : OptionBase
+    {
+        public LockableOption(
+            Option option,
+            CheckBox checkBox,
+            int lockedvalue)
+        {
+            Option = option;
+            LockBox = checkBox;
+            LockedValue = lockedvalue;
+
+            LockBox.Click += OnLockedBoxClicked;
+            LockBox.AutoCheck = false;
+
+            Option.Field.SetNewDefault(LockedValue);
+            SetLocked();
+        }
+
+        public Option Option { get; }
+
+        public CheckBox LockBox { get; }
+
+        public int LockedValue { get; }
+
+        public override int Left
+        {
+            get => Option.Left;
+
+            set
+            {
+                Option.Left = value;
+            }
+        }
+
+        public override int Top
+        {
+            get => Option.Top;
+
+            set
+            {
+                Option.Top = value;
+                LockBox.Top = value;
+            }
+        }
+
+        public override int Width
+        {
+            get => Option.Width;
+
+            set
+            {
+                Option.Width = value;
+            }
+        }
+
+        public override int Height
+        {
+            get => Option.Height;
+        }
+
+        public override bool Visible
+        {
+            get => Option.Visible;
+        }
+
+        public double Value
+        {
+            get => LockBox.Checked ? LockedValue : Option.Field.Data;
+        }
+
+        public void SetActiveValue(double activeValue)
+        {
+            Option.SetActiveValue(activeValue);
+
+            if (activeValue == LockedValue)
+            {
+                SetLocked();
+            }
+            else
+            {
+                SetUnlocked();
+            }
+        }
+
+        public override void AlignActiveValues()
+        {
+            Option.AlignActiveValues();
+        }
+
+        public override void Hide()
+        {
+            Option.Hide();
+            LockBox.Hide();
+        }
+
+        public override void Show(string Name)
+        {
+            Option.Show(Name);
+            LockBox.Show();
+        }
+        private void SetLocked()
+        {
+            LockBox.Checked = true;
+            Option.Field.SetToUnavailable();
+        }
+
+        private void SetUnlocked()
+        {
+            LockBox.Checked = false;
+            Option.Field.SetToDefault();
+        }
+
+        private void OnLockedBoxClicked(object sender, EventArgs e)
+        {
+            if (LockBox.Checked)
+            {
+                SetUnlocked();
+            }
+            else
+            {
+                SetLocked();
+            }
+        }
+    }
+}