New: Many UI Updates and Performance Tweaks

frontend/src/Components/Form/KeyValueListInput.js

@@ -0,0 +1,152 @@
+import PropTypes from 'prop-types';
+import React, { Component } from 'react';
+import classNames from 'classnames';
+import KeyValueListInputItem from './KeyValueListInputItem';
+import styles from './KeyValueListInput.css';
+
+class KeyValueListInput extends Component {
+
+  //
+  // Lifecycle
+
+  constructor(props, context) {
+    super(props, context);
+
+    this.state = {
+      isFocused: false
+    };
+  }
+
+  //
+  // Listeners
+
+  onItemChange = (index, itemValue) => {
+    const {
+      name,
+      value,
+      onChange
+    } = this.props;
+
+    const newValue = [...value];
+
+    if (index == null) {
+      newValue.push(itemValue);
+    } else {
+      newValue.splice(index, 1, itemValue);
+    }
+
+    onChange({
+      name,
+      value: newValue
+    });
+  }
+
+  onRemoveItem = (index) => {
+    const {
+      name,
+      value,
+      onChange
+    } = this.props;
+
+    const newValue = [...value];
+    newValue.splice(index, 1);
+
+    onChange({
+      name,
+      value: newValue
+    });
+  }
+
+  onFocus = () => {
+    this.setState({
+      isFocused: true
+    });
+  }
+
+  onBlur = () => {
+    this.setState({
+      isFocused: false
+    });
+
+    const {
+      name,
+      value,
+      onChange
+    } = this.props;
+
+    const newValue = value.reduce((acc, v) => {
+      if (v.key || v.value) {
+        acc.push(v);
+      }
+
+      return acc;
+    }, []);
+
+    if (newValue.length !== value.length) {
+      onChange({
+        name,
+        value: newValue
+      });
+    }
+  }
+
+  //
+  // Render
+
+  render() {
+    const {
+      className,
+      value,
+      keyPlaceholder,
+      valuePlaceholder
+    } = this.props;
+
+    const { isFocused } = this.state;
+
+    return (
+      <div className={classNames(
+        className,
+        isFocused && styles.isFocused
+      )}
+      >
+        {
+          [...value, { key: '', value: '' }].map((v, index) => {
+            return (
+              <KeyValueListInputItem
+                key={index}
+                index={index}
+                keyValue={v.key}
+                value={v.value}
+                keyPlaceholder={keyPlaceholder}
+                valuePlaceholder={valuePlaceholder}
+                isNew={index === value.length}
+                onChange={this.onItemChange}
+                onRemove={this.onRemoveItem}
+                onFocus={this.onFocus}
+                onBlur={this.onBlur}
+              />
+            );
+          })
+        }
+      </div>
+    );
+  }
+}
+
+KeyValueListInput.propTypes = {
+  className: PropTypes.string.isRequired,
+  name: PropTypes.string.isRequired,
+  value: PropTypes.arrayOf(PropTypes.object).isRequired,
+  hasError: PropTypes.bool,
+  hasWarning: PropTypes.bool,
+  keyPlaceholder: PropTypes.string,
+  valuePlaceholder: PropTypes.string,
+  onChange: PropTypes.func.isRequired
+};
+
+KeyValueListInput.defaultProps = {
+  className: styles.inputContainer,
+  value: []
+};
+
+export default KeyValueListInput;