Graph selection state management and history bug fixes (#679)

* save graph selection in redux state

* fix old graph brush select regressions

* refactor graph brush selection to work with undo/redo

* update tests to match new crossfilter spatial select API

* graph selection state now in redux

* remove dead code

* sync graph selection with redux state; improvements to undoable machinery

* fix regression in undoable

* differentiate graph selection cancel from deselect action

* simplify calculation

* remove debugging code

* fix responsive repaint bug in graph selection tool

* undoable debugging and code cleanliness

* undoable action filter state now merges, rather than replaces

* improve comments

* add debounce to undoable action filter; improve comments and debug sanity check code

* comments

* fix undoable bug with clear scatterplot actions

* disable undoable debug flag

* cleanup API and comments around statemachine

* add test id attribute to lasso

* add better error handling for gene fetch requests

client/src/components/graph/setupLasso.js

@@ -3,7 +3,7 @@
 import * as d3 from "d3";
 
 const Lasso = () => {
-  const dispatch = d3.dispatch("start", "end");
+  const dispatch = d3.dispatch("start", "end", "cancel");
 
   const polygonToPath = polygon =>
     `M${polygon.map(d => d.join(",")).join("L")}`;
@@ -82,6 +82,7 @@ const Lasso = () => {
         lassoPath.remove();
         lassoPath = null;
         lassoPolygon = null;
+        dispatch.call("cancel");
       }
     };
 
@@ -115,6 +116,23 @@ const Lasso = () => {
         closePath = null;
       }
     };
+
+    lasso.move = polygon => {
+      if (polygon !== lassoPolygon || polygon.length !== lassoPolygon.length) {
+        lasso.reset();
+
+        lassoPolygon = polygon;
+        lassoPath = g
+          .append("path")
+          .attr("data-testid", "lasso-element")
+          .attr("fill", "#0bb")
+          .attr("fill-opacity", 0.1)
+          .attr("stroke", "#0bb")
+          .attr("stroke-dasharray", "3, 3");
+
+        lassoPath.attr("d", `${polygonToPath(lassoPolygon)}Z`);
+      }
+    };
   };
 
   lasso.on = (type, callback) => {