├── .gitignore ├── LICENSE ├── README.md ├── index.js ├── package.json └── src ├── index.d.ts └── index.js /.gitignore: -------------------------------------------------------------------------------- 1 | # Built application files 2 | *.apk 3 | *.ap_ 4 | 5 | # Files for the ART/Dalvik VM 6 | *.dex 7 | 8 | # Java class files 9 | *.class 10 | 11 | # Generated files 12 | bin/ 13 | gen/ 14 | out/ 15 | 16 | # Gradle files 17 | .gradle/ 18 | build/ 19 | 20 | # Local configuration file (sdk path, etc) 21 | local.properties 22 | 23 | # Proguard folder generated by Eclipse 24 | proguard/ 25 | 26 | # Log Files 27 | *.log 28 | 29 | # Android Studio Navigation editor temp files 30 | .navigation/ 31 | 32 | # Android Studio captures folder 33 | captures/ 34 | 35 | # Intellij 36 | *.iml 37 | .idea/workspace.xml 38 | 39 | # Keystore files 40 | *.jks 41 | -------------------------------------------------------------------------------- /LICENSE: -------------------------------------------------------------------------------- 1 | Apache License 2 | Version 2.0, January 2004 3 | http://www.apache.org/licenses/ 4 | 5 | TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION 6 | 7 | 1. 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27 | 28 | ... 29 | // If you don't need max height 30 | 31 | 32 | // else if you need to set up max height 33 | 34 | 35 | // Connected to state 36 | 37 | ... 38 | // Also you can use any other TextInput props with AutoGrowTextInput component 39 | ``` 40 | 41 | I hope it'll save your time. 42 | -------------------------------------------------------------------------------- /index.js: -------------------------------------------------------------------------------- 1 | /** 2 | * @flow 3 | */ 4 | 5 | export { default as AutoGrowTextInput } from './src'; 6 | -------------------------------------------------------------------------------- /package.json: -------------------------------------------------------------------------------- 1 | { 2 | "name": "react-native-auto-grow-textinput", 3 | "version": "1.2.1", 4 | "description": "This component allows to create auto grow text input for both platforms (iOS and Android).", 5 | "main": "index.js", 6 | "types": "src/index.d.ts", 7 | "repository": { 8 | "type": "git", 9 | "url": "https://github.com/rusfearuth/react-native-auto-grow-textinput.git" 10 | }, 11 | "author": { 12 | "name": "Alexander Ustinov", 13 | "email": "rusfearuth@gmail.com", 14 | "url": "https://github.com/rusfearuth" 15 | }, 16 | "license": "Apache 2.0", 17 | "homepage": "https://github.com/rusfearuth/react-native-auto-grow-textinput", 18 | "keywords": [ 19 | "textinput", 20 | "autogrowing", 21 | "auto-expanding", 22 | "stretch" 23 | ] 24 | } 25 | -------------------------------------------------------------------------------- /src/index.d.ts: -------------------------------------------------------------------------------- 1 | import * as React from 'react'; 2 | import {TextInputProperties} from 'react-native'; 3 | 4 | export interface AutoGrowTextInputProps extends TextInputProperties { 5 | readonly maxHeight?: number; 6 | readonly minHeight?: number; 7 | readonly shrinkIfEmpty?: boolean; 8 | } 9 | 10 | export declare class AutoGrowTextInput extends React.Component< 11 | AutoGrowTextInputProps, 12 | {} 13 | > { 14 | 15 | } 16 | -------------------------------------------------------------------------------- /src/index.js: -------------------------------------------------------------------------------- 1 | // @flow 2 | 3 | import React, { Component } from 'react'; 4 | import { 5 | StyleSheet, 6 | View, 7 | TextInput, 8 | } from 'react-native'; 9 | 10 | const omit = (obj, keys) => Object.keys(obj) 11 | .filter((key) => keys.indexOf(key) < 0) 12 | .reduce((newObj, key) => Object.assign(newObj, { [key]: obj[key] }), {}) 13 | 14 | type _Style = {[key: string]: Object} | number; 15 | export type Style = _Style | Array<_Style>; 16 | 17 | type Props = { 18 | maxHeight?: number; 19 | minHeight?: number; 20 | style?: Style; 21 | onResized?: () => void; 22 | value: ?string; 23 | shrinkIfEmpty?: boolean; 24 | }; 25 | 26 | type State = { 27 | limit: ?number; 28 | height: number; 29 | }; 30 | 31 | 32 | export default class AutoGrowTextInput extends React.Component { 33 | props: Props; 34 | state: State; 35 | 36 | constructor(props: Props) { 37 | super(props); 38 | 39 | let limit = null; 40 | 41 | if (this.props.maxLines) { 42 | limit = this.props.maxHeight; 43 | } 44 | 45 | this.state = { 46 | limit, 47 | height: this._minHeight() 48 | }; 49 | } 50 | 51 | render() { 52 | const newProps = omit({ 53 | ...this.props, 54 | onContentSizeChange: this._onContentSizeChange, 55 | }, [ 'style', 'maxLines' ]); 56 | 57 | const { value, shrinkIfEmpty } = newProps; 58 | 59 | const externalStyle = this.props.style; 60 | const textInputStyle = { 61 | height: (shrinkIfEmpty || !value) ? this._minHeight() : this.state.height 62 | }; 63 | 64 | return ( 65 | 70 | ); 71 | } 72 | 73 | _onContentSizeChange = (event) => { 74 | const { contentSize } = event.nativeEvent; 75 | const height = this._calcHeight(contentSize.height, this.state.limit); 76 | 77 | if (height === this.state.height) { 78 | return; 79 | } 80 | this.setState({ height }); 81 | this.props.onResized && this.props.onResized(); 82 | } 83 | 84 | _calcHeight(actualHeight: number, limit:? number) { 85 | return limit 86 | ? Math.min(limit, actualHeight) 87 | : Math.max(this._minHeight(), actualHeight); 88 | } 89 | 90 | _minHeight = () => this.props.minHeight || 30; 91 | }; 92 | --------------------------------------------------------------------------------