From 91ecdaa5dd1a65ff0ae944896945c0fe4bc23574 Mon Sep 17 00:00:00 2001
From: haishanh <haishanhan@gmail.com>
Date: Mon, 5 Nov 2018 18:32:16 +0800
Subject: update: convert more components to function ones

includes Input, Config, SideBard.

also removed react-redux Provider
---
 src/components/ToggleSwitch.js | 112 ++++++++++++++++-------------------------
 1 file changed, 42 insertions(+), 70 deletions(-)

(limited to 'src/components/ToggleSwitch.js')

diff --git a/src/components/ToggleSwitch.js b/src/components/ToggleSwitch.js
index cdd4726..7303984 100644
--- a/src/components/ToggleSwitch.js
+++ b/src/components/ToggleSwitch.js
@@ -1,77 +1,49 @@
-import React, { Component } from 'react';
+import React, { useRef } from 'react';
 import PropTypes from 'prop-types';
 
 import s0 from 'c/ToggleSwitch.module.scss';
 
-class ToggleSwitch extends Component {
-  static propTypes = {
-    options: PropTypes.array,
-    value: PropTypes.string,
-    name: PropTypes.string,
-    onChange: PropTypes.func
-  };
-
-  static defaultProps = {
-    options: [
-      {
-        label: 'Global',
-        value: 'Global'
-      },
-      {
-        label: 'Rule',
-        value: 'Rule'
-      },
-      {
-        label: 'Direct',
-        value: 'Direct'
-      }
-    ],
-    value: 'Rule',
-    name: 'rand0'
-  };
-
-  // handleRadioOnChange = ev => {
-  //   ev.preventDefault();
-  //   const value = ev.target.value;
-  //   if (this.state.value === value) return;
-  //   this.setState({ value });
-  // };
-
-  render() {
-    const { options, name, value, onChange } = this.props;
-    const w = (100 / options.length).toPrecision(3);
-    return (
-      <div>
-        <div className={s0.ToggleSwitch}>
-          {options.map((o, idx) => {
-            if (value === o.value) this.idx = idx;
-            const id = `${name}-${o.label}`;
-            let className = idx === 0 ? '' : 'border-left';
-            return (
-              <label htmlFor={id} key={id} className={className}>
-                <input
-                  id={id}
-                  name={name}
-                  type="radio"
-                  value={o.value}
-                  checked={value === o.value}
-                  onChange={onChange}
-                />
-                <div>{o.label}</div>
-              </label>
-            );
-          })}
-          <a
-            className={s0.slider}
-            style={{
-              width: w + '%',
-              left: this.idx * w + '%'
-            }}
-          />
-        </div>
+function ToggleSwitch2({ options, value, name, onChange }) {
+  const idxRef = useRef(null);
+  const w = (100 / options.length).toPrecision(3);
+  return (
+    <div>
+      <div className={s0.ToggleSwitch}>
+        {options.map((o, idx) => {
+          if (value === o.value) idxRef.current = idx;
+          const id = `${name}-${o.label}`;
+          let className = idx === 0 ? '' : 'border-left';
+          return (
+            <label htmlFor={id} key={id} className={className}>
+              <input
+                id={id}
+                name={name}
+                type="radio"
+                value={o.value}
+                checked={value === o.value}
+                onChange={onChange}
+              />
+              <div>{o.label}</div>
+            </label>
+          );
+        })}
+        <a
+          className={s0.slider}
+          style={{
+            width: w + '%',
+            left: idxRef.current * w + '%'
+          }}
+        />
       </div>
-    );
-  }
+    </div>
+  );
 }
 
-export default ToggleSwitch;
+ToggleSwitch2.propTypes = {
+  options: PropTypes.array,
+  value: PropTypes.string,
+  name: PropTypes.string,
+  onChange: PropTypes.func
+};
+
+export default React.memo(ToggleSwitch2);
-- 
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