AG-420 Improve React implementation

src-trader-dashboard/components/renderers/HorizontalBarComponent.jsx

@@ -0,0 +1,42 @@
+import React, {Component} from "react";
+
+export default class HorizontalBarComponent extends Component {
+
+    render() {
+        let positiveChange = {
+            fill: "green"
+        };
+
+        let negativeChange = {
+            fill: "red"
+        };
+
+        let text = {
+            position: "absolute",
+            top: 0,
+            width: "100%",
+            textAlign: "right"
+        };
+
+        let pctNetChange = this.props.value;
+        let pctNetChangeBar = Math.min(Math.abs(pctNetChange) * 100, 100) / 2;
+
+        let barWidth = `${pctNetChangeBar}%`;
+        let barStyle = pctNetChange >= 0 ? positiveChange : negativeChange;
+        let barX = `${pctNetChange >= 0 ? '50' : 50 - pctNetChangeBar}%`;
+        return (
+            <div style={{position: 'relative'}}>
+                <div style={{width: "50%"}}>
+                    <svg width="100%" preserveAspectRatio="none">
+                        <rect x={barX} y="0" width={barWidth} height="20px" rx="4" ry="4" style={barStyle}/>
+                    </svg>
+                </div>
+                <div style={text}>{pctNetChange}</div>
+            </div>
+        )
+    }
+}
+
+HorizontalBarComponent.propTypes = {
+    params: React.PropTypes.object
+};