React Native - Section ListView with search input

index.android.js

/**
 * Inspired by "MyASUS - ASUS support" version 2016 https://play.google.com/store/apps/details?id=com.asus.ia.asusapp
 * Colors: https://material.google.com/style/color.html#color-color-palette
 * 
 * See online - https://rnplay.org/apps/7qet3A
 */

import React, { Component, } from 'react';
import {
  AppRegistry,
  StyleSheet,
  Text,
  TextInput,
  View,
  ListView,
  TouchableHighlight
} from 'react-native';

AppRegistry.registerComponent('App', () => App);      

type DataItem = {
  title: string;
  description: string;
}

const FILTER_TEXT = 'Procurar...';
const EMPTY_TEXT = 'Não existem dados para o filtro informado';

const sections = {
  SERVICES: {
    color: '#90CAF9',
    title: 'Serviço',
    data: [
      {
          title: 'Serviço Rápido',
          description: 'FAQ e Tutoriais em vídeo'
        },
        {
          title: 'Locais de Serviço',
          description: 'Encontre um centro de serviço perto de você'
        },
        {
          title: 'Rastreador de Reparo',
          description: 'Acompanhar de perto os progressos até à data'
        },
        {
          title: 'Entre em contato conosco',
          description: 'O seu portal de pesquisa de uso pessoal e exclusivo'
        },
        {
          title: 'Cadastrar meu produto',
          description: 'Avalie ou cadastre o produto rapidamente para obter a garantia'
        },
        {
          title: 'Ligue-nos',
          description: 'Fale com um assistente para suporte em tempo real'
        }
    ]
  },
  PRODUCTS: {
    color: '#FFA726',
    title: 'Produtos',
    data:[
     {
        title: 'Store',
        description: 'Torne as compras em movimento mais fáceis'
      },
      {
        title: 'Pesquisar produtos',
        description: 'As mais recentes informações sobre o produto ASUS'
      },
      {
        title: 'Notícias ASUS',
        description: 'As mais recentes Notícias ASUS'
      }
    ]
  },
  COMUNITY: {
    color: '#9CCC65',
    title: 'Comunidade',
    data:[
      {
        title: 'Vídeos mais recentes do produto',
        description: 'Assita ao vídeo agora'
      },
      {
        title: 'Facebook',
        description: 'Informações, Eventos e ofertas'
      },
      {
        title: 'Twitter',
        description: 'Encontre tudo no ASUS'
      }
    ]
  },
}

const ds = new ListView.DataSource({
  rowHasChanged: (r1, r2) => r1 !== r2,
  sectionHeaderHasChanged: (h1, h2) => h1 !== h2,
});


function filterDatasource(text){
		const safe = String(text || '').replace(/([.*^$+?!(){}\[\]\/\\])/g,'\\$1');
    const regex = new RegExp(safe, 'i');
    const filter = (row) => regex.test(row.title) || regex.test(row.description);
    
    var out = {};
    for(var sectionID in sections){
    	if(!sections.hasOwnProperty(sectionID)){
        	continue;
			}
      out[sectionID] = sections[sectionID].data.filter(filter);
    }
  
    return ds.cloneWithRowsAndSections(out);
}

class App extends Component {
  
  constructor() {
    super();    

    (this: any).renderRow = this.renderRow.bind(this);
		(this: any).renderSeparator = this.renderSeparator.bind(this);
		(this: any).renderSectionHeader = this.renderSectionHeader.bind(this);
    
    this.state = {
      filter: ''
    }
  }

  render() {
    const dataSource = filterDatasource(this.state.filter);
    
    return (
      <View style={styles.container}>
      	<View style={styles.searchContainer}>
          <TextInput
      			style={styles.searchInput}
            autoCapitalize="none"
            autoCorrect={false}
            clearButtonMode="always"
            onChangeText={(filter) => this.setState({filter})}
  					value={this.state.filter}
            placeholder={FILTER_TEXT}            
            testID="explorer_search"
          />
      	</View>
      	<ListView
      		style={styles.list}
          dataSource={dataSource}
          renderRow={this.renderRow}
      		renderSectionHeader={this.renderSectionHeader}
      		renderSeparator={this.renderSeparator}
          enableEmptySections={true}
        />
      </View>
    );
  }
  
  renderSectionHeader(sectionData: Array<DataItem>, sectionID: string): ?ReactElement<any> {
    const section = sections[sectionID];
    const sectionStyle = {
        borderBottomColor: section.color
    }
  	const isEmpty = !sectionData || sectionData.length < 1; 
  	let emptyContent;
		if(isEmpty){
      	emptyContent = <Text style={styles.sectionEmpty}>{EMPTY_TEXT}</Text>
    }
    return (
      <View>
        <View style={[styles.sectionContainer, sectionStyle]}>
          <Text style={[styles.sectionHeader, sectionStyle]}>
            {section.title}
          </Text>
          <View style={[styles.sectionDetail, sectionStyle]} />          
        </View>   
      	{emptyContent}
    	</View>      
    );
  }

   renderRow(data: DataItem): ?ReactElement<any> {
    let handler = () => {
     console.log(data);
    }
    return (
      <View>
        <TouchableHighlight onPress={handler}>
          <View style={styles.row}>
            <Text style={styles.rowTitle}>
              {data.title}
            </Text>
            <Text style={styles.rowDescription}>
              {data.description}
            </Text>
          </View>
        </TouchableHighlight>
      </View>
    );
  }

  renderSeparator(sectionID: string, rowID: any, adjacentRowHighlighted: boolean): ?ReactElement<any> {    
    return (
      <View key={`${sectionID}-${rowID}`} style={styles.separator} />
    );
  }
}

const styles = StyleSheet.create({
  container: {
    flex: 1,
    paddingTop:25,
    backgroundColor: '#fff'
   },
   list: {
    backgroundColor: '#eeeeee',
   },
	 sectionContainer: {
    backgroundColor: '#fff',
		borderBottomWidth: 1,
		height: 50, 
		justifyContent: 'flex-end'		
   },
	 sectionHeader:{
		paddingLeft: 15,
		fontWeight: 'bold',
		fontSize: 16,
	 },
	 sectionDetail:{
		borderBottomWidth: 4,
		width: 120
	 },
	 sectionEmpty:{
			backgroundColor: '#fff',
			paddingHorizontal: 15,
    	paddingVertical: 8,
	 },
   row: {
    backgroundColor: 'white',
    paddingHorizontal: 15,
    paddingTop: 25,
   },
   rowTitle: {
    fontSize: 14,
    fontWeight: '500',
   },
   rowDescription: {
    fontSize: 14,
    color: '#888888',
    lineHeight: 20,
   },
   separator: {
    height: StyleSheet.hairlineWidth,
    backgroundColor: '#bbbbbb',
    marginLeft: 15,
   },
	 searchContainer: {
    backgroundColor: '#FFF',
		paddingVertical: 10,
		borderBottomWidth: StyleSheet.hairlineWidth,
		borderBottomColor: '#bbbbbb',
   },
   searchInput: {
    backgroundColor: 'white',
    paddingLeft: 20,
    height: 35,
  },
});

Is it possible to filter using the section headers as well?