Rocket.Chat.ReactNative/app/containers/HeaderButton/HeaderButtonItem.tsx

import React from 'react';
import { Platform, StyleSheet, Text } from 'react-native';
import { PlatformPressable } from '@react-navigation/elements';

import { CustomIcon, ICustomIcon, TIconsName } from '../CustomIcon';
import { useTheme } from '../../theme';
import sharedStyles from '../../views/Styles';

export interface IHeaderButtonItem extends Omit<ICustomIcon, 'name' | 'size' | 'color'> {
	title?: string;
	iconName?: TIconsName;
	onPress?: <T>(arg: T) => void;
	testID?: string;
	badge?(): void;
	color?: string;
	disabled?: boolean;
}

export const BUTTON_HIT_SLOP = {
	top: 5,
	right: 5,
	bottom: 5,
	left: 5
};

const styles = StyleSheet.create({
	container: {
		padding: 6
	},
	title: {
		...Platform.select({
			android: {
				fontSize: 14
			},
			default: {
				fontSize: 17
			}
		}),
		...sharedStyles.textRegular
	}
});

const Item = ({ title, iconName, onPress, testID, badge, color, disabled, ...props }: IHeaderButtonItem): React.ReactElement => {
	const { colors } = useTheme();
	return (
		<PlatformPressable
			onPress={onPress}
			testID={testID}
			hitSlop={BUTTON_HIT_SLOP}
			disabled={disabled}
			style={[
				styles.container,
				{
					opacity: disabled ? 0.5 : 1
				}
			]}
		>
			<>
				{iconName ? (
					<CustomIcon name={iconName} size={24} color={color || colors.headerTintColor} {...props} />
				) : (
					<Text style={[styles.title, { color: color || colors.headerTintColor }]} {...props}>
						{title}
					</Text>
				)}
				{badge ? badge() : null}
			</>
		</PlatformPressable>
	);
};

Item.displayName = 'HeaderButton.Item';

export default Item;