Allow custom options for charts

app/src/components/ChartPanel/ChartSettings/InterpolationSettings.tsx

@@ -0,0 +1,66 @@
+import * as React from 'react'
+import { AppState } from '../../../reducers'
+import { bindActionCreators } from 'redux'
+import { chartActions } from '../../../actions'
+import { ChartParameters, PlotCurveTypes } from '../../../reducers/Charts'
+import { connect } from 'react-redux'
+import { Menu, MenuItem } from '@material-ui/core'
+
+function chartParametersForAction(chart: ChartParameters, action: string) {
+  return {
+    topic: chart.topic,
+    dotPath: chart.dotPath,
+    interpolation: action as any,
+  }
+}
+
+const curves: Array<PlotCurveTypes> = ['curve', 'linear', 'step_after', 'step_before', 'cubic_basis_spline']
+
+function InterpolationSettings(props: {
+  chart: ChartParameters
+  actions: {
+    chart: typeof chartActions
+  }
+  anchorEl?: Element
+  open: boolean
+  onClose: () => void
+}) {
+  const callbacks = React.useMemo(() => {
+    const createCurveCallback = (curve: PlotCurveTypes) => () => {
+      props.actions.chart.updateChart(chartParametersForAction(props.chart, curve))
+    }
+
+    const callbacks: { [key: string]: () => void } = {}
+    for (const curve of curves) {
+      callbacks[curve] = createCurveCallback(curve)
+    }
+    return callbacks
+  }, [curves])
+
+  const menuItems = React.useMemo(() => {
+    return curves.map(curve => (
+      <MenuItem key={curve} onClick={callbacks[curve]} selected={props.chart.interpolation === curve}>
+        {curve.replace(/_/g, ' ')}
+      </MenuItem>
+    ))
+  }, [curves, props.chart])
+
+  return (
+    <Menu id="long-menu" anchorEl={props.anchorEl} open={props.open} onClose={props.onClose}>
+      {menuItems}
+    </Menu>
+  )
+}
+
+const mapDispatchToProps = (dispatch: any) => {
+  return {
+    actions: {
+      chart: bindActionCreators(chartActions, dispatch),
+    },
+  }
+}
+
+export default connect(
+  undefined,
+  mapDispatchToProps
+)(InterpolationSettings)