rename to expression buttons since heatmap is broken out

src/components/expression/expressionButtons.js

@@ -0,0 +1,74 @@
+import React from "react";
+import _ from "lodash";
+import { connect } from "react-redux";
+import * as globals from "../../globals";
+import actions from "../../actions";
+import CellSetButton from "./cellSetButtons";
+
+@connect((state) => {
+  return {
+    currentCellSelection: state.controls.currentCellSelection,
+    differential: state.differential
+  }
+})
+class Expression extends React.Component {
+  constructor(props) {
+    super(props);
+    this.state = {
+
+    };
+  }
+  handleClick(gene) {
+    return () => {
+      this.props.dispatch({
+        type: "color by expression",
+        gene: gene,
+      });
+    }
+  }
+  computeDiffExp() {
+    this.props.dispatch(
+      actions.requestDifferentialExpression(
+        this.props.differential.celllist1,
+        this.props.differential.celllist2
+      )
+    )
+  }
+  render () {
+    if (
+      !this.props.differential
+    ) {
+      return null
+    }
+    return (
+      <div>
+        <div style={{margin: 10}}>
+        <CellSetButton
+          {...this.props}
+          eitherCellSetOneOrTwo={1}/>
+        <CellSetButton
+          {...this.props}
+          eitherCellSetOneOrTwo={2}/>
+        </div>
+        <div>
+          <button
+            style={{
+              fontSize: 18,
+              margin: 10,
+              fontWeight: 700,
+              color: "#FFF",
+              padding: "12px 20px",
+              backgroundColor: globals.darkGreen,
+              border: "none",
+              cursor: "pointer",
+            }}
+            onClick={this.computeDiffExp.bind(this)}>
+            Compute differential expression
+          </button>
+        </div>
+      </div>
+    )
+  }
+};
+
+export default Expression;