react-native-recaptcha/AutoHeightWebView.js at master · nvmanh/react-native-recaptcha · GitHub

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
/**
 * Custom WebView with autoHeight feature
 *
 * @prop source: Same as WebView
 * @prop autoHeight: true|false
 * @prop defaultHeight: 100
 * @prop width: device Width
 * @prop ...props
 *
 * @author Elton Jain
 * @author ManhNV
 * @version v1.0.2
 */

import React, { Component } from 'react';
import {
  View,
  Dimensions,
  WebView,
} from 'react-native';
import PropTypes from 'prop-types';

const injectedScript = function () {
  function waitForBridge() {
    if (window.postMessage.length !== 1) {
      setTimeout(waitForBridge, 200);
    }
    else {
      let height = 0;
      if (document.documentElement.clientHeight > document.body.clientHeight) {
        height = document.documentElement.clientHeight
      }
      else {
        height = document.body.clientHeight
      }
      postMessage(height)
    }
  }
  waitForBridge();
};

const getWebviewContent = (siteKey) => {
  const originalForm = '<!DOCTYPE html><html><head>' +
    '<style>  .text-xs-center { text-align: center; } .g-recaptcha { display: inline-block; } </style>' +
    '<script src="https://www.google.com/recaptcha/api.js"></script>' +
    '<script type="text/javascript"> var onloadCallback = function() { }; ' +
    'var onDataCallback = function(response) { window.postMessage(response);  }; ' +
    'var onDataExpiredCallback = function(error) {  window.postMessage("expired"); }; ' +
    'var onDataErrorCallback = function(error) {  window.postMessage("error"); } </script>' +
    '</head><body>' +
    '<div class="text-xs-center"><div class="g-recaptcha" ' +
    'data-sitekey="' + siteKey + '" data-callback="onDataCallback" ' +
    'data-expired-callback="onDataExpiredCallback" ' +
    'data-error-callback="onDataErrorCallback"></div></div></body></html>';
  return originalForm;
}


export default class AutoHeightWebView extends Component {
  state = {
    webViewHeight: Number
  };

  static propTypes = {
    onSuccess: PropTypes.func.isRequired,
    onError: PropTypes.func.isRequired,
    onExpired: PropTypes.func.isRequired,
    defaultHeight: PropTypes.number,
    autoHeight: PropTypes.bool,
    url: PropTypes.string.isRequired,
    siteKey: PropTypes.string.isRequired
  }

  static defaultProps = {
    autoHeight: true,
    onError: () => null,
    onExpired: () => null,
    onSuccess: () => null
  }

  constructor(props) {
    super(props);
    this.state = {
      webViewHeight: this.props.defaultHeight
    }
    this._onMessage = this._onMessage.bind(this);
  }

  _onMessage(e) {
    if (e && e.nativeEvent && e.nativeEvent.data) {
      const val = e.nativeEvent.data;
      if (!isNaN(val)) {
        this.setState({
          webViewHeight: parseInt(val)
        });
      } else if (val === 'expired') {
        this.props.onExpired();
      } else if (val === 'error') {
        this.props.onError();
      } else {
        this.props.onSuccess(val);
      }
    }
  }

  stopLoading() {
    this.webview.stopLoading();
  }

  render() {
    const _w = this.props.width || Dimensions.get('window').width;
    const _h = this.props.autoHeight ? this.state.webViewHeight : this.props.defaultHeight;
    return (
      <WebView
        ref={(ref) => { this.webview = ref; }}
        injectedJavaScript={'(' + String(injectedScript) + ')();' +
          'window.postMessage = String(Object.hasOwnProperty).replace(\'hasOwnProperty\', \'postMessage\');'}
        scrollEnabled={this.props.scrollEnabled || false}
        onMessage={this._onMessage}
        javaScriptEnabled
        automaticallyAdjustContentInsets
        /* {...this.props} */
        style={[{ width: _w }, this.props.style, { height: _h }]}
        source={{
          html: getWebviewContent(this.props.siteKey),
          baseUrl: this.props.url
        }}
      />
    )
  }
}