3 files changed, 34 insertions, 18 deletions
diff --git a/grapher/Models/Serialized/GUISettings.cs b/grapher/Models/Serialized/GUISettings.cs
index c8f87ae..bb35055 100644
--- a/grapher/Models/Serialized/GUISettings.cs
+++ b/grapher/Models/Serialized/GUISettings.cs
@@ -4,6 +4,7 @@ using System;
 namespace grapher.Models.Serialized
 {
     [Serializable]
+    [JsonObject(ItemRequired = Required.Always)]
     public class GUISettings
     {
         #region Constructors
@@ -27,6 +28,9 @@ namespace grapher.Models.Serialized
         [JsonProperty(Order = 4)]
         public bool ShowVelocityAndGain { get; set; }
 
+        [JsonProperty(Order = 5)]
+        public bool AutoWriteToDriverOnStartup { get; set; }
+
         #endregion Properties
 
         #region Methods
@@ -48,7 +52,8 @@ namespace grapher.Models.Serialized
             return DPI == other.DPI &&
                 PollRate == other.PollRate &&
                 ShowLastMouseMove == other.ShowLastMouseMove &&
-                ShowVelocityAndGain == other.ShowVelocityAndGain;
+                ShowVelocityAndGain == other.ShowVelocityAndGain &&
+                AutoWriteToDriverOnStartup == other.AutoWriteToDriverOnStartup;
         }
 
         public override int GetHashCode()
@@ -56,7 +61,8 @@ namespace grapher.Models.Serialized
             return DPI.GetHashCode() ^
                 PollRate.GetHashCode() ^
                 ShowLastMouseMove.GetHashCode() ^
-                ShowVelocityAndGain.GetHashCode();
+                ShowVelocityAndGain.GetHashCode() ^
+                AutoWriteToDriverOnStartup.GetHashCode();
         }
 
         #endregion Methods
diff --git a/grapher/Models/Serialized/RawAccelSettings.cs b/grapher/Models/Serialized/RawAccelSettings.cs
index 818bfb6..af87a65 100644
--- a/grapher/Models/Serialized/RawAccelSettings.cs
+++ b/grapher/Models/Serialized/RawAccelSettings.cs
@@ -117,13 +117,18 @@ namespace grapher.Models.Serialized
 
         public bool IsDefaultEquivalent()
         {
-            bool wholeOrNoY = AccelerationSettings.combineMagnitudes ||
-                AccelerationSettings.modes.y == AccelMode.noaccel;
+            return IsDefaultEquivalent(AccelerationSettings);
+        }
+
+        public static bool IsDefaultEquivalent(DriverSettings accelSettings)
+        {
+            bool wholeOrNoY = accelSettings.combineMagnitudes ||
+                accelSettings.modes.y == AccelMode.noaccel;
 
-            return AccelerationSettings.sensitivity.x == 1 &&
-                AccelerationSettings.sensitivity.y == 1 &&
-                AccelerationSettings.rotation == 0 &&
-                AccelerationSettings.modes.x == AccelMode.noaccel &&
+            return accelSettings.sensitivity.x == 1 &&
+                accelSettings.sensitivity.y == 1 &&
+                accelSettings.rotation == 0 &&
+                accelSettings.modes.x == AccelMode.noaccel &&
                 wholeOrNoY;
         }
 
diff --git a/grapher/Models/Serialized/SettingsManager.cs b/grapher/Models/Serialized/SettingsManager.cs
index 8712c87..f13ba81 100644
--- a/grapher/Models/Serialized/SettingsManager.cs
+++ b/grapher/Models/Serialized/SettingsManager.cs
@@ -14,12 +14,14 @@ namespace grapher.Models.Serialized
             ManagedAccel activeAccel,
             Field dpiField,
             Field pollRateField,
+            ToolStripMenuItem autoWrite,
             ToolStripMenuItem showLastMouseMove,
             ToolStripMenuItem showVelocityAndGain)
         {
             ActiveAccel = activeAccel;
             DpiField = dpiField;
             PollRateField = pollRateField;
+            AutoWriteMenuItem = autoWrite;
             ShowLastMouseMoveMenuItem = showLastMouseMove;
             ShowVelocityAndGainMoveMenuItem = showVelocityAndGain;
         }
@@ -36,6 +38,8 @@ namespace grapher.Models.Serialized
 
         private Field PollRateField { get; set; }
 
+        private ToolStripMenuItem AutoWriteMenuItem { get; set; }
+
         private ToolStripMenuItem ShowLastMouseMoveMenuItem { get; set; }
 
         private ToolStripMenuItem ShowVelocityAndGainMoveMenuItem { get; set; }
@@ -92,12 +96,7 @@ namespace grapher.Models.Serialized
             PollRateField.SetToEntered(RawAccelSettings.GUISettings.PollRate);
             ShowLastMouseMoveMenuItem.Checked = RawAccelSettings.GUISettings.ShowLastMouseMove;
             ShowVelocityAndGainMoveMenuItem.Checked = RawAccelSettings.GUISettings.ShowVelocityAndGain;
-        }
-
-        public void UpdateActiveAccelFromFileSettings(DriverSettings settings)
-        {
-            TryUpdateAccel(settings);
-            UpdateFieldsFromGUISettings();
+            AutoWriteMenuItem.Checked = RawAccelSettings.GUISettings.AutoWriteToDriverOnStartup;
         }
 
         public SettingsErrors TryUpdateAccel(DriverSettings settings)
@@ -126,11 +125,13 @@ namespace grapher.Models.Serialized
                 DPI = (int)DpiField.Data,
                 PollRate = (int)PollRateField.Data,
                 ShowLastMouseMove = ShowLastMouseMoveMenuItem.Checked,
-                ShowVelocityAndGain = ShowVelocityAndGainMoveMenuItem.Checked
+                ShowVelocityAndGain = ShowVelocityAndGainMoveMenuItem.Checked,
+                AutoWriteToDriverOnStartup = AutoWriteMenuItem.Checked
             };
         }
 
-        public void Startup()
+        // Returns true when file settings are active
+        public bool Startup()
         {
             if (RawAccelSettings.Exists())
             {
@@ -138,8 +139,11 @@ namespace grapher.Models.Serialized
                 {
                     RawAccelSettings = RawAccelSettings.Load(() => MakeGUISettingsFromFields());
                     UpdateFieldsFromGUISettings();
-                    UpdateActiveAccelFromFileSettings(RawAccelSettings.AccelerationSettings);
-                    return;
+                    if (RawAccelSettings.GUISettings.AutoWriteToDriverOnStartup)
+                    {
+                        TryUpdateAccel(RawAccelSettings.AccelerationSettings);
+                    }
+                    return RawAccelSettings.GUISettings.AutoWriteToDriverOnStartup;
                 }
                 catch (JsonException e)
                 {
@@ -151,6 +155,7 @@ namespace grapher.Models.Serialized
                 DriverInterop.GetActiveSettings(),
                 MakeGUISettingsFromFields());
             RawAccelSettings.Save();
+            return true;
         }
 
         #endregion Methods