771 lines
22 KiB
JavaScript
771 lines
22 KiB
JavaScript
/**
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* Copyright (c) 2015-present, Facebook, Inc.
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*
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* This source code is licensed under the MIT license found in the
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* LICENSE file in the root directory of this source tree.
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*
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* @format
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* @noflow
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*/
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'use strict';
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const ActivityIndicator = require('ActivityIndicator');
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const EdgeInsetsPropType = require('EdgeInsetsPropType');
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const Linking = require('Linking');
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const PropTypes = require('prop-types');
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const React = require('React');
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const ReactNative = require('ReactNative');
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const ScrollView = require('ScrollView');
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const StyleSheet = require('StyleSheet');
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const Text = require('Text');
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const UIManager = require('UIManager');
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const View = require('View');
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const ViewPropTypes = require('ViewPropTypes');
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const WebViewShared = require('WebViewShared');
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const deprecatedPropType = require('deprecatedPropType');
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const invariant = require('fbjs/lib/invariant');
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const keyMirror = require('fbjs/lib/keyMirror');
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const processDecelerationRate = require('processDecelerationRate');
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const requireNativeComponent = require('requireNativeComponent');
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const resolveAssetSource = require('resolveAssetSource');
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const RCTWebViewManager = require('NativeModules').WebViewManager;
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const RCTWKWebViewManager = require('NativeModules').WKWebViewManager;
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const BGWASH = 'rgba(255,255,255,0.8)';
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const RCT_WEBVIEW_REF = 'webview';
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const WebViewState = keyMirror({
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IDLE: null,
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LOADING: null,
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ERROR: null,
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});
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const NavigationType = keyMirror({
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click: true,
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formsubmit: true,
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backforward: true,
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reload: true,
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formresubmit: true,
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other: true,
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});
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const JSNavigationScheme = 'react-js-navigation';
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type ErrorEvent = {
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domain: any,
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code: any,
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description: any,
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};
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type Event = Object;
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const DataDetectorTypes = [
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'phoneNumber',
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'link',
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'address',
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'calendarEvent',
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'trackingNumber',
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'flightNumber',
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'lookupSuggestion',
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'none',
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'all',
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];
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const defaultRenderLoading = () => (
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<View style={styles.loadingView}>
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<ActivityIndicator />
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</View>
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);
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const defaultRenderError = (errorDomain, errorCode, errorDesc) => (
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<View style={styles.errorContainer}>
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<Text style={styles.errorTextTitle}>Error loading page</Text>
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<Text style={styles.errorText}>{'Domain: ' + errorDomain}</Text>
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<Text style={styles.errorText}>{'Error Code: ' + errorCode}</Text>
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<Text style={styles.errorText}>{'Description: ' + errorDesc}</Text>
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</View>
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);
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/**
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* `WebView` renders web content in a native view.
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*
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*```
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* import React, { Component } from 'react';
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* import { WebView } from 'react-native';
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*
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* class MyWeb extends Component {
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* render() {
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* return (
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* <WebView
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* source={{uri: 'https://github.com/facebook/react-native'}}
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* style={{marginTop: 20}}
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* />
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* );
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* }
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* }
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*```
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*
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* You can use this component to navigate back and forth in the web view's
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* history and configure various properties for the web content.
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*/
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class WebView extends React.Component {
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static JSNavigationScheme = JSNavigationScheme;
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static NavigationType = NavigationType;
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static propTypes = {
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...ViewPropTypes,
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html: deprecatedPropType(
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PropTypes.string,
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'Use the `source` prop instead.',
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),
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url: deprecatedPropType(PropTypes.string, 'Use the `source` prop instead.'),
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/**
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* Loads static html or a uri (with optional headers) in the WebView.
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*/
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source: PropTypes.oneOfType([
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PropTypes.shape({
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/*
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* The URI to load in the `WebView`. Can be a local or remote file.
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*/
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uri: PropTypes.string,
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/*
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* The HTTP Method to use. Defaults to GET if not specified.
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* NOTE: On Android, only GET and POST are supported.
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*/
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method: PropTypes.string,
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/*
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* Additional HTTP headers to send with the request.
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* NOTE: On Android, this can only be used with GET requests.
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*/
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headers: PropTypes.object,
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/*
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* The HTTP body to send with the request. This must be a valid
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* UTF-8 string, and will be sent exactly as specified, with no
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* additional encoding (e.g. URL-escaping or base64) applied.
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* NOTE: On Android, this can only be used with POST requests.
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*/
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body: PropTypes.string,
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}),
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PropTypes.shape({
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/*
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* A static HTML page to display in the WebView.
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*/
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html: PropTypes.string,
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/*
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* The base URL to be used for any relative links in the HTML.
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*/
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baseUrl: PropTypes.string,
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}),
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/*
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* Used internally by packager.
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*/
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PropTypes.number,
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]),
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/**
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* If true, use WKWebView instead of UIWebView.
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* @platform ios
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*/
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useWebKit: PropTypes.bool,
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/**
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* Function that returns a view to show if there's an error.
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*/
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renderError: PropTypes.func, // view to show if there's an error
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/**
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* Function that returns a loading indicator.
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*/
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renderLoading: PropTypes.func,
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/**
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* Function that is invoked when the `WebView` has finished loading.
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*/
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onLoad: PropTypes.func,
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/**
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* Function that is invoked when the `WebView` load succeeds or fails.
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*/
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onLoadEnd: PropTypes.func,
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/**
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* Function that is invoked when the `WebView` starts loading.
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*/
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onLoadStart: PropTypes.func,
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/**
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* Function that is invoked when the `WebView` load fails.
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*/
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onError: PropTypes.func,
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/**
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* Boolean value that determines whether the web view bounces
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* when it reaches the edge of the content. The default value is `true`.
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* @platform ios
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*/
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bounces: PropTypes.bool,
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/**
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* A floating-point number that determines how quickly the scroll view
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* decelerates after the user lifts their finger. You may also use the
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* string shortcuts `"normal"` and `"fast"` which match the underlying iOS
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* settings for `UIScrollViewDecelerationRateNormal` and
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* `UIScrollViewDecelerationRateFast` respectively:
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*
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* - normal: 0.998
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* - fast: 0.99 (the default for iOS web view)
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* @platform ios
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*/
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decelerationRate: PropTypes.oneOfType([
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PropTypes.oneOf(['fast', 'normal']),
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PropTypes.number,
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]),
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/**
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* Boolean value that determines whether scrolling is enabled in the
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* `WebView`. The default value is `true`.
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* @platform ios
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*/
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scrollEnabled: PropTypes.bool,
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/**
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* Controls whether to adjust the content inset for web views that are
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* placed behind a navigation bar, tab bar, or toolbar. The default value
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* is `true`.
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*/
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automaticallyAdjustContentInsets: PropTypes.bool,
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/**
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* The amount by which the web view content is inset from the edges of
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* the scroll view. Defaults to {top: 0, left: 0, bottom: 0, right: 0}.
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* @platform ios
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*/
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contentInset: EdgeInsetsPropType,
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/**
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* Function that is invoked when the `WebView` loading starts or ends.
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*/
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onNavigationStateChange: PropTypes.func,
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/**
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* A function that is invoked when the webview calls `window.postMessage`.
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* Setting this property will inject a `postMessage` global into your
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* webview, but will still call pre-existing values of `postMessage`.
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*
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* `window.postMessage` accepts one argument, `data`, which will be
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* available on the event object, `event.nativeEvent.data`. `data`
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* must be a string.
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*/
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onMessage: PropTypes.func,
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/**
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* Boolean value that forces the `WebView` to show the loading view
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* on the first load.
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*/
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startInLoadingState: PropTypes.bool,
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/**
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* The style to apply to the `WebView`.
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*/
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style: ViewPropTypes.style,
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/**
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* Determines the types of data converted to clickable URLs in the web view's content.
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* By default only phone numbers are detected.
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*
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* You can provide one type or an array of many types.
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*
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* Possible values for `dataDetectorTypes` are:
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*
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* - `'phoneNumber'`
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* - `'link'`
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* - `'address'`
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* - `'calendarEvent'`
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* - `'none'`
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* - `'all'`
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*
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* With the new WebKit implementation, we have three new values:
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* - `'trackingNumber'`,
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* - `'flightNumber'`,
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* - `'lookupSuggestion'`,
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*
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* @platform ios
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*/
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dataDetectorTypes: PropTypes.oneOfType([
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PropTypes.oneOf(DataDetectorTypes),
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PropTypes.arrayOf(PropTypes.oneOf(DataDetectorTypes)),
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]),
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/**
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* Boolean value to enable JavaScript in the `WebView`. Used on Android only
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* as JavaScript is enabled by default on iOS. The default value is `true`.
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* @platform android
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*/
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javaScriptEnabled: PropTypes.bool,
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/**
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* Boolean value to enable third party cookies in the `WebView`. Used on
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* Android Lollipop and above only as third party cookies are enabled by
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* default on Android Kitkat and below and on iOS. The default value is `true`.
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* @platform android
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*/
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thirdPartyCookiesEnabled: PropTypes.bool,
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/**
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* Boolean value to control whether DOM Storage is enabled. Used only in
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* Android.
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* @platform android
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*/
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domStorageEnabled: PropTypes.bool,
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/**
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* Set this to provide JavaScript that will be injected into the web page
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* when the view loads.
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*/
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injectedJavaScript: PropTypes.string,
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/**
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* Sets the user-agent for the `WebView`.
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* @platform android
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*/
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userAgent: PropTypes.string,
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/**
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* Boolean that controls whether the web content is scaled to fit
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* the view and enables the user to change the scale. The default value
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* is `true`.
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*
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* On iOS, when `useWebKit=true`, this prop will not work.
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*/
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scalesPageToFit: PropTypes.bool,
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/**
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* Function that allows custom handling of any web view requests. Return
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* `true` from the function to continue loading the request and `false`
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* to stop loading.
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* @platform ios
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*/
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onShouldStartLoadWithRequest: PropTypes.func,
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/**
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* Boolean that determines whether HTML5 videos play inline or use the
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* native full-screen controller. The default value is `false`.
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*
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* **NOTE** : In order for video to play inline, not only does this
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* property need to be set to `true`, but the video element in the HTML
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* document must also include the `webkit-playsinline` attribute.
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* @platform ios
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*/
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allowsInlineMediaPlayback: PropTypes.bool,
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/**
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* Boolean that determines whether HTML5 audio and video requires the user
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* to tap them before they start playing. The default value is `true`.
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*/
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mediaPlaybackRequiresUserAction: PropTypes.bool,
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/**
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* List of origin strings to allow being navigated to. The strings allow
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* wildcards and get matched against *just* the origin (not the full URL).
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* If the user taps to navigate to a new page but the new page is not in
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* this whitelist, we will open the URL in Safari.
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* The default whitelisted origins are "http://*" and "https://*".
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*/
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originWhitelist: PropTypes.arrayOf(PropTypes.string),
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/**
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* Function that accepts a string that will be passed to the WebView and
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* executed immediately as JavaScript.
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*/
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injectJavaScript: PropTypes.func,
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/**
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* Specifies the mixed content mode. i.e WebView will allow a secure origin to load content from any other origin.
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*
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* Possible values for `mixedContentMode` are:
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*
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* - `'never'` (default) - WebView will not allow a secure origin to load content from an insecure origin.
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* - `'always'` - WebView will allow a secure origin to load content from any other origin, even if that origin is insecure.
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* - `'compatibility'` - WebView will attempt to be compatible with the approach of a modern web browser with regard to mixed content.
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* @platform android
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*/
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mixedContentMode: PropTypes.oneOf(['never', 'always', 'compatibility']),
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/**
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* Override the native component used to render the WebView. Enables a custom native
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* WebView which uses the same JavaScript as the original WebView.
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*/
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nativeConfig: PropTypes.shape({
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/*
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* The native component used to render the WebView.
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*/
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component: PropTypes.any,
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/*
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* Set props directly on the native component WebView. Enables custom props which the
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* original WebView doesn't pass through.
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*/
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props: PropTypes.object,
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/*
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* Set the ViewManager to use for communication with the native side.
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* @platform ios
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*/
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viewManager: PropTypes.object,
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}),
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};
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static defaultProps = {
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originWhitelist: WebViewShared.defaultOriginWhitelist,
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};
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state = {
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viewState: WebViewState.IDLE,
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lastErrorEvent: (null: ?ErrorEvent),
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startInLoadingState: true,
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};
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UNSAFE_componentWillMount() {
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if (this.props.startInLoadingState) {
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this.setState({viewState: WebViewState.LOADING});
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}
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if (
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this.props.useWebKit === true &&
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this.props.scalesPageToFit !== undefined
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) {
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console.warn(
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'The scalesPageToFit property is not supported when useWebKit = true',
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);
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}
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}
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render() {
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let otherView = null;
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let scalesPageToFit;
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if (this.props.useWebKit) {
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({scalesPageToFit} = this.props);
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} else {
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({scalesPageToFit = true} = this.props);
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}
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if (this.state.viewState === WebViewState.LOADING) {
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otherView = (this.props.renderLoading || defaultRenderLoading)();
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} else if (this.state.viewState === WebViewState.ERROR) {
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const errorEvent = this.state.lastErrorEvent;
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invariant(errorEvent != null, 'lastErrorEvent expected to be non-null');
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otherView = (this.props.renderError || defaultRenderError)(
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errorEvent.domain,
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errorEvent.code,
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errorEvent.description,
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);
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} else if (this.state.viewState !== WebViewState.IDLE) {
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console.error(
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'RCTWebView invalid state encountered: ' + this.state.loading,
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);
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}
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const webViewStyles = [styles.container, styles.webView, this.props.style];
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if (
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this.state.viewState === WebViewState.LOADING ||
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this.state.viewState === WebViewState.ERROR
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) {
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// if we're in either LOADING or ERROR states, don't show the webView
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webViewStyles.push(styles.hidden);
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}
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const nativeConfig = this.props.nativeConfig || {};
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let viewManager = nativeConfig.viewManager;
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if (this.props.useWebKit) {
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viewManager = viewManager || RCTWKWebViewManager;
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} else {
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viewManager = viewManager || RCTWebViewManager;
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}
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const compiledWhitelist = [
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'about:blank',
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...(this.props.originWhitelist || []),
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].map(WebViewShared.originWhitelistToRegex);
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const onShouldStartLoadWithRequest = (event: Event) => {
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let shouldStart = true;
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const {url} = event.nativeEvent;
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const origin = WebViewShared.extractOrigin(url);
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const passesWhitelist = compiledWhitelist.some(x =>
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new RegExp(x).test(origin),
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);
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shouldStart = shouldStart && passesWhitelist;
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if (!passesWhitelist) {
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Linking.openURL(url);
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}
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if (this.props.onShouldStartLoadWithRequest) {
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shouldStart =
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shouldStart &&
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this.props.onShouldStartLoadWithRequest(event.nativeEvent);
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}
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viewManager.startLoadWithResult(
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!!shouldStart,
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event.nativeEvent.lockIdentifier,
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);
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};
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const decelerationRate = processDecelerationRate(
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this.props.decelerationRate,
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);
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const source = this.props.source || {};
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if (this.props.html) {
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source.html = this.props.html;
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} else if (this.props.url) {
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source.uri = this.props.url;
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}
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const messagingEnabled = typeof this.props.onMessage === 'function';
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let NativeWebView = nativeConfig.component;
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if (this.props.useWebKit) {
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NativeWebView = NativeWebView || RCTWKWebView;
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} else {
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NativeWebView = NativeWebView || RCTWebView;
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}
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const webView = (
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<NativeWebView
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ref={RCT_WEBVIEW_REF}
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key="webViewKey"
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style={webViewStyles}
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source={resolveAssetSource(source)}
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injectedJavaScript={this.props.injectedJavaScript}
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bounces={this.props.bounces}
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scrollEnabled={this.props.scrollEnabled}
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decelerationRate={decelerationRate}
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contentInset={this.props.contentInset}
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automaticallyAdjustContentInsets={
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this.props.automaticallyAdjustContentInsets
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}
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onLoadingStart={this._onLoadingStart}
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onLoadingFinish={this._onLoadingFinish}
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onLoadingError={this._onLoadingError}
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messagingEnabled={messagingEnabled}
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onMessage={this._onMessage}
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onShouldStartLoadWithRequest={onShouldStartLoadWithRequest}
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scalesPageToFit={scalesPageToFit}
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allowsInlineMediaPlayback={this.props.allowsInlineMediaPlayback}
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mediaPlaybackRequiresUserAction={
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this.props.mediaPlaybackRequiresUserAction
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}
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dataDetectorTypes={this.props.dataDetectorTypes}
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{...nativeConfig.props}
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|
/>
|
|
);
|
|
|
|
return (
|
|
<View style={styles.container}>
|
|
{webView}
|
|
{otherView}
|
|
</View>
|
|
);
|
|
}
|
|
|
|
_getCommands() {
|
|
if (!this.props.useWebKit) {
|
|
return UIManager.RCTWebView.Commands;
|
|
}
|
|
|
|
return UIManager.RCTWKWebView.Commands;
|
|
}
|
|
|
|
/**
|
|
* Go forward one page in the web view's history.
|
|
*/
|
|
goForward = () => {
|
|
UIManager.dispatchViewManagerCommand(
|
|
this.getWebViewHandle(),
|
|
this._getCommands().goForward,
|
|
null,
|
|
);
|
|
};
|
|
|
|
/**
|
|
* Go back one page in the web view's history.
|
|
*/
|
|
goBack = () => {
|
|
UIManager.dispatchViewManagerCommand(
|
|
this.getWebViewHandle(),
|
|
this._getCommands().goBack,
|
|
null,
|
|
);
|
|
};
|
|
|
|
/**
|
|
* Reloads the current page.
|
|
*/
|
|
reload = () => {
|
|
this.setState({viewState: WebViewState.LOADING});
|
|
UIManager.dispatchViewManagerCommand(
|
|
this.getWebViewHandle(),
|
|
this._getCommands().reload,
|
|
null,
|
|
);
|
|
};
|
|
|
|
/**
|
|
* Stop loading the current page.
|
|
*/
|
|
stopLoading = () => {
|
|
UIManager.dispatchViewManagerCommand(
|
|
this.getWebViewHandle(),
|
|
this._getCommands().stopLoading,
|
|
null,
|
|
);
|
|
};
|
|
|
|
/**
|
|
* Posts a message to the web view, which will emit a `message` event.
|
|
* Accepts one argument, `data`, which must be a string.
|
|
*
|
|
* In your webview, you'll need to something like the following.
|
|
*
|
|
* ```js
|
|
* document.addEventListener('message', e => { document.title = e.data; });
|
|
* ```
|
|
*/
|
|
postMessage = data => {
|
|
UIManager.dispatchViewManagerCommand(
|
|
this.getWebViewHandle(),
|
|
this._getCommands().postMessage,
|
|
[String(data)],
|
|
);
|
|
};
|
|
|
|
/**
|
|
* Injects a javascript string into the referenced WebView. Deliberately does not
|
|
* return a response because using eval() to return a response breaks this method
|
|
* on pages with a Content Security Policy that disallows eval(). If you need that
|
|
* functionality, look into postMessage/onMessage.
|
|
*/
|
|
injectJavaScript = data => {
|
|
UIManager.dispatchViewManagerCommand(
|
|
this.getWebViewHandle(),
|
|
this._getCommands().injectJavaScript,
|
|
[data],
|
|
);
|
|
};
|
|
|
|
/**
|
|
* We return an event with a bunch of fields including:
|
|
* url, title, loading, canGoBack, canGoForward
|
|
*/
|
|
_updateNavigationState = (event: Event) => {
|
|
if (this.props.onNavigationStateChange) {
|
|
this.props.onNavigationStateChange(event.nativeEvent);
|
|
}
|
|
};
|
|
|
|
/**
|
|
* Returns the native `WebView` node.
|
|
*/
|
|
getWebViewHandle = (): any => {
|
|
return ReactNative.findNodeHandle(this.refs[RCT_WEBVIEW_REF]);
|
|
};
|
|
|
|
_onLoadingStart = (event: Event) => {
|
|
const onLoadStart = this.props.onLoadStart;
|
|
onLoadStart && onLoadStart(event);
|
|
this._updateNavigationState(event);
|
|
};
|
|
|
|
_onLoadingError = (event: Event) => {
|
|
event.persist(); // persist this event because we need to store it
|
|
const {onError, onLoadEnd} = this.props;
|
|
onError && onError(event);
|
|
onLoadEnd && onLoadEnd(event);
|
|
console.warn('Encountered an error loading page', event.nativeEvent);
|
|
|
|
this.setState({
|
|
lastErrorEvent: event.nativeEvent,
|
|
viewState: WebViewState.ERROR,
|
|
});
|
|
};
|
|
|
|
_onLoadingFinish = (event: Event) => {
|
|
const {onLoad, onLoadEnd} = this.props;
|
|
onLoad && onLoad(event);
|
|
onLoadEnd && onLoadEnd(event);
|
|
this.setState({
|
|
viewState: WebViewState.IDLE,
|
|
});
|
|
this._updateNavigationState(event);
|
|
};
|
|
|
|
_onMessage = (event: Event) => {
|
|
const {onMessage} = this.props;
|
|
onMessage && onMessage(event);
|
|
};
|
|
|
|
componentDidUpdate(prevProps) {
|
|
if (!(prevProps.useWebKit && this.props.useWebKit)) {
|
|
return;
|
|
}
|
|
|
|
this._showRedboxOnPropChanges(prevProps, 'allowsInlineMediaPlayback');
|
|
this._showRedboxOnPropChanges(prevProps, 'mediaPlaybackRequiresUserAction');
|
|
this._showRedboxOnPropChanges(prevProps, 'dataDetectorTypes');
|
|
|
|
if (this.props.scalesPageToFit !== undefined) {
|
|
console.warn(
|
|
'The scalesPageToFit property is not supported when useWebKit = true',
|
|
);
|
|
}
|
|
}
|
|
|
|
_showRedboxOnPropChanges(prevProps, propName: string) {
|
|
if (this.props[propName] !== prevProps[propName]) {
|
|
console.error(
|
|
`Changes to property ${propName} do nothing after the initial render.`,
|
|
);
|
|
}
|
|
}
|
|
}
|
|
|
|
const RCTWebView = requireNativeComponent(
|
|
'RCTWebView',
|
|
WebView,
|
|
WebView.extraNativeComponentConfig,
|
|
);
|
|
const RCTWKWebView = requireNativeComponent(
|
|
'RCTWKWebView',
|
|
WebView,
|
|
WebView.extraNativeComponentConfig,
|
|
);
|
|
|
|
const styles = StyleSheet.create({
|
|
container: {
|
|
flex: 1,
|
|
},
|
|
errorContainer: {
|
|
flex: 1,
|
|
justifyContent: 'center',
|
|
alignItems: 'center',
|
|
backgroundColor: BGWASH,
|
|
},
|
|
errorText: {
|
|
fontSize: 14,
|
|
textAlign: 'center',
|
|
marginBottom: 2,
|
|
},
|
|
errorTextTitle: {
|
|
fontSize: 15,
|
|
fontWeight: '500',
|
|
marginBottom: 10,
|
|
},
|
|
hidden: {
|
|
height: 0,
|
|
flex: 0, // disable 'flex:1' when hiding a View
|
|
},
|
|
loadingView: {
|
|
backgroundColor: BGWASH,
|
|
flex: 1,
|
|
justifyContent: 'center',
|
|
alignItems: 'center',
|
|
height: 100,
|
|
},
|
|
webView: {
|
|
backgroundColor: '#ffffff',
|
|
},
|
|
});
|
|
|
|
module.exports = WebView;
|