New: Add headers setting in webhook connection

(cherry picked from commit 78fb20282de73c0ea47375895a807235385d90e3)

frontend/src/Components/Form/KeyValueListInput.tsx

@@ -0,0 +1,104 @@
+import classNames from 'classnames';
+import React, { useCallback, useState } from 'react';
+import { InputOnChange } from 'typings/inputs';
+import KeyValueListInputItem from './KeyValueListInputItem';
+import styles from './KeyValueListInput.css';
+
+interface KeyValue {
+  key: string;
+  value: string;
+}
+
+export interface KeyValueListInputProps {
+  className?: string;
+  name: string;
+  value: KeyValue[];
+  hasError?: boolean;
+  hasWarning?: boolean;
+  keyPlaceholder?: string;
+  valuePlaceholder?: string;
+  onChange: InputOnChange<KeyValue[]>;
+}
+
+function KeyValueListInput({
+  className = styles.inputContainer,
+  name,
+  value = [],
+  hasError = false,
+  hasWarning = false,
+  keyPlaceholder,
+  valuePlaceholder,
+  onChange,
+}: KeyValueListInputProps): JSX.Element {
+  const [isFocused, setIsFocused] = useState(false);
+
+  const handleItemChange = useCallback(
+    (index: number | null, itemValue: KeyValue) => {
+      const newValue = [...value];
+
+      if (index === null) {
+        newValue.push(itemValue);
+      } else {
+        newValue.splice(index, 1, itemValue);
+      }
+
+      onChange({ name, value: newValue });
+    },
+    [value, name, onChange]
+  );
+
+  const handleRemoveItem = useCallback(
+    (index: number) => {
+      const newValue = [...value];
+      newValue.splice(index, 1);
+      onChange({ name, value: newValue });
+    },
+    [value, name, onChange]
+  );
+
+  const onFocus = useCallback(() => setIsFocused(true), []);
+
+  const onBlur = useCallback(() => {
+    setIsFocused(false);
+
+    const newValue = value.reduce((acc: KeyValue[], v) => {
+      if (v.key || v.value) {
+        acc.push(v);
+      }
+      return acc;
+    }, []);
+
+    if (newValue.length !== value.length) {
+      onChange({ name, value: newValue });
+    }
+  }, [value, name, onChange]);
+
+  return (
+    <div
+      className={classNames(
+        className,
+        isFocused && styles.isFocused,
+        hasError && styles.hasError,
+        hasWarning && styles.hasWarning
+      )}
+    >
+      {[...value, { key: '', value: '' }].map((v, index) => (
+        <KeyValueListInputItem
+          key={index}
+          index={index}
+          keyValue={v.key}
+          value={v.value}
+          keyPlaceholder={keyPlaceholder}
+          valuePlaceholder={valuePlaceholder}
+          isNew={index === value.length}
+          onChange={handleItemChange}
+          onRemove={handleRemoveItem}
+          onFocus={onFocus}
+          onBlur={onBlur}
+        />
+      ))}
+    </div>
+  );
+}
+
+export default KeyValueListInput;