Color by gene set mean expression (#2157)

* colorby histo

* color graph by mean expression

* move var index after returns

* add genesets as an argument

* varindex

* undo redo for mean expression

* destructure

* ternary

* Revert "destructure"

This reverts commit 2d9432c1c7.

* color by mean for diffexp

client/src/reducers/colors.js

@@ -4,8 +4,8 @@ Color By UI state
 
 const ColorsReducer = (
   state = {
-    colorMode: null,
-    colorAccessor: null,
+    colorMode: null /* by continuous, by expression */,
+    colorAccessor: null /* tissue, Apod */,
   },
   action,
   nextSharedState,
@@ -96,6 +96,21 @@ const ColorsReducer = (
       };
     }
 
+    case "color by geneset mean expression": {
+      /* toggle between this mode and reset */
+      const resetCurrent =
+        action.type === state.colorMode &&
+        action.geneset === state.colorAccessor;
+      const colorMode = !resetCurrent ? action.type : null;
+      const colorAccessor = !resetCurrent ? action.geneset : null;
+
+      return {
+        ...state,
+        colorMode,
+        colorAccessor,
+      };
+    }
+
     default: {
       return state;
     }

client/src/reducers/undoableConfig.js

@@ -80,6 +80,7 @@ const saveOnActions = new Set([
   "color by categorical metadata",
   "color by continuous metadata",
   "color by expression",
+  "color by geneset mean expression",
 
   "show centroid labels for category",