Put in a enable retract setting

Made slice settings disable work

SlicerConfiguration/Settings/SettingsHelpers.cs

@@ -120,6 +120,7 @@ namespace MatterHackers.MatterControl.SlicerConfiguration
 		public const string write_regex = nameof(write_regex);
 		public const string read_regex = nameof(read_regex);
 		public const string temperature = nameof(temperature);
+		public const string enable_retractions = nameof(enable_retractions);
 		public const string use_z_probe = nameof(use_z_probe);
 		public const string z_probe_samples = nameof(z_probe_samples);
 		public const string has_z_probe = nameof(has_z_probe);

SlicerConfiguration/SliceSettingsOrganizer.cs

@@ -54,6 +54,8 @@ namespace MatterHackers.MatterControl.SlicerConfiguration
 
 		public string ShowIfSet { get; set; }
 
+		public string EnableIfSet { get; set; }
+
 		public string DefaultValue { get; set; }
 
 		public DataEditTypes DataEditType { get; set; }

SlicerConfiguration/SliceSettingsWidget.cs

@@ -421,7 +421,7 @@ namespace MatterHackers.MatterControl.SlicerConfiguration
 
 						foreach (SliceSettingData settingData in subGroup.SettingDataList)
 						{
-							// Note: tab sections may disappear if they when they are empty, as controlled by:
+							// Note: tab sections may disappear if / when they are empty, as controlled by:
 							// settingShouldBeShown / addedSettingToSubGroup / needToAddSubGroup
 							bool settingShouldBeShown = CheckIfShouldBeShown(settingData);
 
@@ -538,6 +538,12 @@ namespace MatterHackers.MatterControl.SlicerConfiguration
 			return settingShouldBeShown;
 		}
 
+		private bool CheckIfEnabled(SliceSettingData settingData)
+		{
+			bool shouldBeEnabled = ActiveSliceSettings.Instance.ParseShowString(settingData.EnableIfSet, layerCascade);
+			return shouldBeEnabled;
+		}
+
 		private GuiWidget AddInHelpText(FlowLayoutWidget topToBottomSettings, SliceSettingData settingData)
 		{
 			FlowLayoutWidget allText = new FlowLayoutWidget(FlowDirection.TopToBottom);
@@ -1617,6 +1623,29 @@ namespace MatterHackers.MatterControl.SlicerConfiguration
 			// Invoke the UpdateStyle implementation
 			settingsRow.UpdateStyle();
 
+			bool settingShouldEnabled = ActiveSliceSettings.Instance.ParseShowString(settingData.EnableIfSet, layerCascade);
+			if (!settingShouldEnabled)
+			{
+				var holder = new GuiWidget()
+				{
+					VAnchor = VAnchor.FitToChildren,
+					HAnchor = HAnchor.ParentLeftRight
+				};
+
+				holder.AddChild(settingsRow);
+
+				var disable = new GuiWidget()
+				{
+					VAnchor = VAnchor.ParentBottomTop,
+					HAnchor = HAnchor.ParentLeftRight,
+				};
+				disable.BackgroundColor = new RGBA_Bytes(ActiveTheme.Instance.TertiaryBackgroundColor, 200);
+
+				holder.AddChild(disable);
+
+				return holder;
+			}
+
 			return settingsRow;
 		}
 

SlicerConfiguration/SlicerMapping/EngineMapingBase.cs

@@ -78,6 +78,7 @@ namespace MatterHackers.MatterControl.SlicerConfiguration
 			SettingsKey.recover_position_before_z_home,
 			SettingsKey.resume_gcode,
 			SettingsKey.temperature,
+			SettingsKey.enable_retractions,
 			"z_homes_to_max",
 
 			// TODO: merge the items below into the list above after some validation - setting that weren't previously mapped to Cura but probably should be. 

SlicerConfiguration/SlicerMapping/EngineMappingMatterSlice.cs

@@ -68,7 +68,7 @@ namespace MatterHackers.MatterControl.SlicerConfiguration
 				new GCodeForSlicer(SettingsKey.end_gcode, "endCode"),
 				new GCodeForSlicer("toolchange_gcode", "toolChangeCode"),
 				new MapFirstValue("retract_before_travel", "minimumTravelToCauseRetraction"),
-				new MapFirstValue("retract_length", "retractionOnTravel"),
+				new RetractionLength("retract_length", "retractionOnTravel"),
 				new MapFirstValue("retract_lift", "retractionZHop"),
 				new MapFirstValue("retract_restart_extra", "unretractExtraExtrusion"),
 				new MapFirstValue("retract_restart_extra_time_to_apply", "retractRestartExtraTimeToApply"),

SlicerConfiguration/SlicerMapping/MappingClasses.cs

@@ -497,6 +497,29 @@ namespace MatterHackers.MatterControl.SlicerConfiguration
 		}
 	}
 
+	public class RetractionLength : MappedSetting
+	{
+		public RetractionLength(string canonicalSettingsName, string exportedName)
+			: base(canonicalSettingsName, exportedName)
+		{
+		}
+
+		public override string Value
+		{
+			get
+			{
+				if(ActiveSliceSettings.Instance.GetValue<bool>(SettingsKey.enable_retractions))
+				{
+					return base.Value;
+				}
+				else
+				{
+					return 0.ToString();
+				}
+			}
+		}
+	}
+
 	public class AsPercentOfReferenceOrDirect : MappedSetting
 	{
 		string originalReference;