Migrate Choropleth visualization to React

client/app/assets/less/inc/visualizations/map.less

@@ -6,32 +6,4 @@
     height: 100%;
     z-index: 0;
   }
-
-  .map-custom-control.leaflet-bar {
-    background: #fff;
-    padding: 10px;
-    margin: 10px;
-    position: absolute;
-    z-index: 1;
-
-    &.top-left {
-      left: 0;
-      top: 0;
-    }
-
-    &.top-right {
-      right: 0;
-      top: 0;
-    }
-
-    &.bottom-left {
-      left: 0;
-      bottom: 0;
-    }
-
-    &.bottom-right {
-      right: 0;
-      bottom: 0;
-    }
-  }
 }

client/app/lib/hooks/useMemoWithDeepCompare.js

@@ -0,0 +1,11 @@
+import { isEqual } from 'lodash';
+import { useMemo, useRef } from 'react';
+
+export default function useMemoWithDeepCompare(create, inputs) {
+  const valueRef = useRef();
+  const value = useMemo(create, inputs);
+  if (!isEqual(value, valueRef.current)) {
+    valueRef.current = value;
+  }
+  return valueRef.current;
+}

client/app/visualizations/choropleth/ColorPalette.js

@@ -0,0 +1,8 @@
+import { extend } from 'lodash';
+import ColorPalette from '@/visualizations/ColorPalette';
+
+export default extend({
+  White: '#ffffff',
+  Black: '#000000',
+  'Light Gray': '#dddddd',
+}, ColorPalette);

client/app/visualizations/choropleth/Editor/BoundsSettings.jsx

@@ -0,0 +1,80 @@
+import { isFinite, cloneDeep } from 'lodash';
+import React, { useState, useEffect, useCallback } from 'react';
+import { useDebouncedCallback } from 'use-debounce';
+import InputNumber from 'antd/lib/input-number';
+import * as Grid from 'antd/lib/grid';
+import { EditorPropTypes } from '@/visualizations';
+
+export default function BoundsSettings({ options, onOptionsChange }) {
+  // Bounds may be changed in editor or on preview (by drag/zoom map).
+  // Changes from preview does not come frequently (only when user release mouse button),
+  // but changes from editor should be debounced.
+  // Therefore this component has intermediate state to hold immediate user input,
+  // which is updated from `options.bounds` and by inputs immediately on user input,
+  // but `onOptionsChange` event is debounced and uses last value from internal state.
+
+  const [bounds, setBounds] = useState(options.bounds);
+  const [onOptionsChangeDebounced] = useDebouncedCallback(onOptionsChange, 200);
+
+  useEffect(() => {
+    setBounds(options.bounds);
+  }, [options.bounds]);
+
+  const updateBounds = useCallback((i, j, v) => {
+    v = parseFloat(v); // InputNumber may emit `null` and empty strings instead of numbers
+    if (isFinite(v)) {
+      const newBounds = cloneDeep(bounds);
+      newBounds[i][j] = v;
+      setBounds(newBounds);
+      onOptionsChangeDebounced({ bounds: newBounds });
+    }
+  }, [bounds]);
+
+  return (
+    <React.Fragment>
+      <div className="m-b-15">
+        <label htmlFor="choropleth-editor-bounds-ne">North-East latitude and longitude</label>
+        <Grid.Row gutter={15}>
+          <Grid.Col span={12}>
+            <InputNumber
+              id="choropleth-editor-bounds-ne"
+              className="w-100"
+              value={bounds[1][0]}
+              onChange={value => updateBounds(1, 0, value)}
+            />
+          </Grid.Col>
+          <Grid.Col span={12}>
+            <InputNumber
+              className="w-100"
+              value={bounds[1][1]}
+              onChange={value => updateBounds(1, 1, value)}
+            />
+          </Grid.Col>
+        </Grid.Row>
+      </div>
+
+      <div className="m-b-15">
+        <label htmlFor="choropleth-editor-bounds-sw">South-West latitude and longitude</label>
+        <Grid.Row gutter={15}>
+          <Grid.Col span={12}>
+            <InputNumber
+              id="choropleth-editor-bounds-sw"
+              className="w-100"
+              value={bounds[0][0]}
+              onChange={value => updateBounds(0, 0, value)}
+            />
+          </Grid.Col>
+          <Grid.Col span={12}>
+            <InputNumber
+              className="w-100"
+              value={bounds[0][1]}
+              onChange={value => updateBounds(0, 1, value)}
+            />
+          </Grid.Col>
+        </Grid.Row>
+      </div>
+    </React.Fragment>
+  );
+}
+
+BoundsSettings.propTypes = EditorPropTypes;

client/app/visualizations/choropleth/Editor/ColorsSettings.jsx

@@ -0,0 +1,132 @@
+import React from 'react';
+import { useDebouncedCallback } from 'use-debounce';
+import Select from 'antd/lib/select';
+import InputNumber from 'antd/lib/input-number';
+import * as Grid from 'antd/lib/grid';
+import ColorPicker from '@/components/ColorPicker';
+import { EditorPropTypes } from '@/visualizations';
+import ColorPalette from '../ColorPalette';
+
+export default function ColorsSettings({ options, onOptionsChange }) {
+  const [onOptionsChangeDebounced] = useDebouncedCallback(onOptionsChange, 200);
+
+  return (
+    <React.Fragment>
+      <Grid.Row type="flex" align="middle" className="m-b-15">
+        <Grid.Col span={12}>
+          <label htmlFor="choropleth-editor-clustering-mode">Clustering mode</label>
+        </Grid.Col>
+        <Grid.Col span={12}>
+          <Select
+            id="choropleth-editor-clustering-mode"
+            className="w-100"
+            defaultValue={options.clusteringMode}
+            onChange={clusteringMode => onOptionsChange({ clusteringMode })}
+          >
+            <Select.Option value="q">quantile</Select.Option>
+            <Select.Option value="e">equidistant</Select.Option>
+            <Select.Option value="k">k-means</Select.Option>
+          </Select>
+        </Grid.Col>
+      </Grid.Row>
+
+      <Grid.Row type="flex" align="middle" className="m-b-15">
+        <Grid.Col span={12}>
+          <label htmlFor="choropleth-editor-color-steps">Steps</label>
+        </Grid.Col>
+        <Grid.Col span={12}>
+          <InputNumber
+            id="choropleth-editor-color-steps"
+            className="w-100"
+            min={3}
+            max={11}
+            defaultValue={options.steps}
+            onChange={steps => onOptionsChangeDebounced({ steps })}
+          />
+        </Grid.Col>
+      </Grid.Row>
+
+      <Grid.Row type="flex" align="middle" className="m-b-15">
+        <Grid.Col span={12}>
+          <label htmlFor="choropleth-editor-color-min">Min Color</label>
+        </Grid.Col>
+        <Grid.Col span={12}>
+          <ColorPicker
+            id="choropleth-editor-color-min"
+            interactive
+            presetColors={ColorPalette}
+            placement="topRight"
+            color={options.colors.min}
+            onChange={min => onOptionsChange({ colors: { min } })}
+          />
+        </Grid.Col>
+      </Grid.Row>
+
+      <Grid.Row type="flex" align="middle" className="m-b-15">
+        <Grid.Col span={12}>
+          <label htmlFor="choropleth-editor-color-max">Max Color</label>
+        </Grid.Col>
+        <Grid.Col span={12}>
+          <ColorPicker
+            id="choropleth-editor-color-max"
+            interactive
+            presetColors={ColorPalette}
+            placement="topRight"
+            color={options.colors.max}
+            onChange={max => onOptionsChange({ colors: { max } })}
+          />
+        </Grid.Col>
+      </Grid.Row>
+
+      <Grid.Row type="flex" align="middle" className="m-b-15">
+        <Grid.Col span={12}>
+          <label htmlFor="choropleth-editor-color-no-value">No value color</label>
+        </Grid.Col>
+        <Grid.Col span={12}>
+          <ColorPicker
+            id="choropleth-editor-color-no-value"
+            interactive
+            presetColors={ColorPalette}
+            placement="topRight"
+            color={options.colors.noValue}
+            onChange={noValue => onOptionsChange({ colors: { noValue } })}
+          />
+        </Grid.Col>
+      </Grid.Row>
+
+      <Grid.Row type="flex" align="middle" className="m-b-15">
+        <Grid.Col span={12}>
+          <label htmlFor="choropleth-editor-color-background">Background color</label>
+        </Grid.Col>
+        <Grid.Col span={12}>
+          <ColorPicker
+            id="choropleth-editor-color-background"
+            interactive
+            presetColors={ColorPalette}
+            placement="topRight"
+            color={options.colors.background}
+            onChange={background => onOptionsChange({ colors: { background } })}
+          />
+        </Grid.Col>
+      </Grid.Row>
+
+      <Grid.Row type="flex" align="middle" className="m-b-15">
+        <Grid.Col span={12}>
+          <label htmlFor="choropleth-editor-color-borders">Borders color</label>
+        </Grid.Col>
+        <Grid.Col span={12}>
+          <ColorPicker
+            id="choropleth-editor-color-borders"
+            interactive
+            presetColors={ColorPalette}
+            placement="topRight"
+            color={options.colors.borders}
+            onChange={borders => onOptionsChange({ colors: { borders } })}
+          />
+        </Grid.Col>
+      </Grid.Row>
+    </React.Fragment>
+  );
+}
+
+ColorsSettings.propTypes = EditorPropTypes;