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WKWebView.ios.js
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WKWebView.ios.js
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'use strict';
import React from 'react';
import PropTypes from 'prop-types';
import ReactNative, {
requireNativeComponent,
EdgeInsetsPropType,
StyleSheet,
UIManager,
View,
ViewPropTypes,
NativeModules,
Text,
ActivityIndicator
} from 'react-native';
import resolveAssetSource from 'react-native/Libraries/Image/resolveAssetSource';
import deprecatedPropType from 'react-native/Libraries/Utilities/deprecatedPropType';
import invariant from 'fbjs/lib/invariant';
import keyMirror from 'fbjs/lib/keyMirror';
const WKWebViewManager = NativeModules.CRAWKWebViewManager;
var BGWASH = 'rgba(255,255,255,0.8)';
const WebViewState = keyMirror({
IDLE: null,
LOADING: null,
ERROR: null,
});
const NavigationType = keyMirror({
click: true,
formsubmit: true,
backforward: true,
reload: true,
formresubmit: true,
other: true,
});
const JSNavigationScheme = 'react-js-navigation';
type ErrorEvent = {
domain: any;
code: any;
description: any;
}
type Event = Object;
const defaultRenderLoading = () => (
<View style={styles.loadingView}>
<ActivityIndicator />
</View>
);
const defaultRenderError = (errorDomain, errorCode, errorDesc) => (
<View style={styles.errorContainer}>
<Text style={styles.errorTextTitle}>
Error loading page
</Text>
<Text style={styles.errorText}>
{'Domain: ' + errorDomain}
</Text>
<Text style={styles.errorText}>
{'Error Code: ' + errorCode}
</Text>
<Text style={styles.errorText}>
{'Description: ' + errorDesc}
</Text>
</View>
);
/**
* Renders a native WebView.
*/
class WKWebView extends React.Component {
static JSNavigationScheme = JSNavigationScheme;
static NavigationType = NavigationType;
static propTypes = {
...ViewPropTypes,
html: deprecatedPropType(
PropTypes.string,
'Use the `source` prop instead.'
),
url: deprecatedPropType(
PropTypes.string,
'Use the `source` prop instead.'
),
/**
* Loads static html or a uri (with optional headers) in the WebView.
*/
source: PropTypes.oneOfType([
PropTypes.shape({
/*
* The URI to load in the WebView. Can be a local or remote file.
*/
uri: PropTypes.string,
/*
* The HTTP Method to use. Defaults to GET if not specified.
* NOTE: On Android, only GET and POST are supported.
*/
method: PropTypes.string,
/*
* Additional HTTP headers to send with the request.
* NOTE: On Android, this can only be used with GET requests.
*/
headers: PropTypes.object,
/*
* The HTTP body to send with the request. This must be a valid
* UTF-8 string, and will be sent exactly as specified, with no
* additional encoding (e.g. URL-escaping or base64) applied.
* NOTE: On Android, this can only be used with POST requests.
*/
body: PropTypes.string,
}),
PropTypes.shape({
/*
* A static HTML page to display in the WebView.
*/
html: PropTypes.string,
/*
* The base URL to be used for any relative links in the HTML.
*/
baseUrl: PropTypes.string,
}),
/*
* Used internally by packager.
*/
PropTypes.number,
]),
/**
* This property specifies how the safe area insets are used to modify the
* content area of the scroll view. The default value of this property is
* "never". Available on iOS 11 and later.
*/
contentInsetAdjustmentBehavior: PropTypes.oneOf([
'automatic',
'scrollableAxes',
'never', // default
'always',
]),
/**
* Function that returns a view to show if there's an error.
*/
renderError: PropTypes.func, // view to show if there's an error
/**
* Function that returns a loading indicator.
*/
renderLoading: PropTypes.func,
/**
* Invoked when load finish
*/
onLoad: PropTypes.func,
/**
* Invoked when load either succeeds or fails
*/
onLoadEnd: PropTypes.func,
/**
* Invoked on load start
*/
onLoadStart: PropTypes.func,
/**
* Invoked when load fails
*/
onError: PropTypes.func,
/**
* Report the progress
*/
onProgress: PropTypes.func,
/**
* A function that is invoked when the webview calls `window.postMessage`.
* Setting this property will inject a `postMessage` global into your
* webview, but will still call pre-existing values of `postMessage`.
*
* `window.postMessage` accepts one argument, `data`, which will be
* available on the event object, `event.nativeEvent.data`. `data`
* must be a string.
*/
onMessage: PropTypes.func,
/**
* Receive scroll events from view
*/
onScroll: PropTypes.func,
/**
* A callback to get response headers, http status code and http localized status code.
*/
onNavigationResponse: PropTypes.func,
/**
* @platform ios
*/
bounces: PropTypes.bool,
scrollEnabled: PropTypes.bool,
allowsBackForwardNavigationGestures: PropTypes.bool,
allowsInlineMediaPlayback: PropTypes.bool,
mediaPlaybackRequiresUserAction: PropTypes.bool,
automaticallyAdjustContentInsets: PropTypes.bool,
contentInset: EdgeInsetsPropType,
onNavigationStateChange: PropTypes.func,
scalesPageToFit: PropTypes.bool,
startInLoadingState: PropTypes.bool,
style: ViewPropTypes.style,
/**
* If false injectJavaScript will run both main frame and iframe
* @platform ios
*/
injectJavaScriptForMainFrameOnly: PropTypes.bool,
/**
* If false injectedJavaScript will run both main frame and iframe
* @platform ios
*/
injectedJavaScriptForMainFrameOnly: PropTypes.bool,
/**
* Function that accepts a string that will be passed to the WebView and executed immediately as JavaScript.
*/
injectJavaScript: PropTypes.string,
/**
* Sets the JS to be injected when the webpage loads.
*/
injectedJavaScript: PropTypes.string,
/**
* Allows custom handling of any webview requests by a JS handler. Return true
* or false from this method to continue loading the request.
* @platform ios
*/
onShouldStartLoadWithRequest: PropTypes.func,
/**
* Copies cookies from sharedHTTPCookieStorage when calling loadRequest.
* Set this to true to emulate behavior of WebView component.
*/
sendCookies: PropTypes.bool,
/**
* If set to true, target="_blank" or window.open will be opened in WebView, instead
* of new window. Default is false to be backward compatible.
*/
openNewWindowInWebView: PropTypes.bool,
/**
* Hide the accessory view when the keyboard is open. Default is false to be
* backward compatible.
*/
hideKeyboardAccessoryView: PropTypes.bool,
/**
* Enable the keyboard to display when focusing an input in a webview programatically
*/
keyboardDisplayRequiresUserAction: PropTypes.bool,
/**
* A Boolean value that determines whether pressing on a link displays a preview of the destination for the link. This props is available on devices that support 3D Touch. In iOS 10 and later, the default value is true; before that, the default value is false.
*/
allowsLinkPreview: PropTypes.bool,
/**
* Sets the customized user agent by using of the WKWebView
*/
customUserAgent: PropTypes.string,
userAgent: PropTypes.string,
/**
* A Boolean value that determines whether paging is enabled for the scroll view.
*/
pagingEnabled: PropTypes.bool,
/**
* A Boolean value that sets whether diagonal scrolling is allowed.
*/
directionalLockEnabled: PropTypes.bool,
/*
* The manner in which the keyboard is dismissed when a drag begins in the
* scroll view.
*/
keyboardDismissMode: PropTypes.oneOf([
'none', // Default
'on-drag',
'interactive', // iOS only
]),
};
state = {
viewState: WebViewState.IDLE,
lastErrorEvent: (null: ?ErrorEvent),
startInLoadingState: true,
};
componentWillMount() {
if (this.props.startInLoadingState) {
this.setState({ viewState: WebViewState.LOADING });
}
}
render() {
let otherView = null;
if (this.state.viewState === WebViewState.LOADING) {
otherView = (this.props.renderLoading || defaultRenderLoading)();
} else if (this.state.viewState === WebViewState.ERROR) {
const errorEvent = this.state.lastErrorEvent;
invariant(
errorEvent != null,
'lastErrorEvent expected to be non-null'
);
otherView = (this.props.renderError || defaultRenderError)(
errorEvent.domain,
errorEvent.code,
errorEvent.description
);
} else if (this.state.viewState !== WebViewState.IDLE) {
console.error(
'CRAWKWebView invalid state encountered: ' + this.state.loading
);
}
const webViewStyles = [styles.container, styles.webView, this.props.style];
if (this.state.viewState === WebViewState.LOADING ||
this.state.viewState === WebViewState.ERROR) {
// if we're in either LOADING or ERROR states, don't show the webView
webViewStyles.push(styles.hidden);
}
const onShouldStartLoadWithRequest = this.props.onShouldStartLoadWithRequest && ((event: Event) => {
const shouldStart = this.props.onShouldStartLoadWithRequest &&
this.props.onShouldStartLoadWithRequest(event.nativeEvent);
WKWebViewManager.startLoadWithResult(!!shouldStart, event.nativeEvent.lockIdentifier);
});
let source = this.props.source;
if (this.props.source && typeof this.props.source === 'object') {
source = Object.assign({}, this.props.source, {
sendCookies: this.props.sendCookies,
customUserAgent: this.props.customUserAgent || this.props.userAgent
});
if (this.props.html) {
source.html = this.props.html;
} else if (this.props.url) {
source.uri = this.props.url;
}
}
const messagingEnabled = typeof this.props.onMessage === 'function';
const webView =
<CRAWKWebView
ref={ref => { this.webview = ref; }}
key="webViewKey"
style={webViewStyles}
contentInsetAdjustmentBehavior={this.props.contentInsetAdjustmentBehavior}
source={resolveAssetSource(source)}
injectJavaScriptForMainFrameOnly={this.props.injectJavaScriptForMainFrameOnly}
injectedJavaScriptForMainFrameOnly={this.props.injectedJavaScriptForMainFrameOnly}
injectJavaScript={this.props.injectJavaScript}
injectedJavaScript={this.props.injectedJavaScript}
bounces={this.props.bounces}
scrollEnabled={this.props.scrollEnabled}
contentInset={this.props.contentInset}
allowsBackForwardNavigationGestures={this.props.allowsBackForwardNavigationGestures}
automaticallyAdjustContentInsets={this.props.automaticallyAdjustContentInsets}
openNewWindowInWebView={this.props.openNewWindowInWebView}
hideKeyboardAccessoryView={this.props.hideKeyboardAccessoryView}
keyboardDisplayRequiresUserAction={this.props.keyboardDisplayRequiresUserAction}
allowsLinkPreview={this.props.allowsLinkPreview}
allowsInlineMediaPlayback={this.props.allowsInlineMediaPlayback}
mediaPlaybackRequiresUserAction={
this.props.mediaPlaybackRequiresUserAction
}
onLoadingStart={this._onLoadingStart}
onLoadingFinish={this._onLoadingFinish}
onLoadingError={this._onLoadingError}
messagingEnabled={messagingEnabled}
onProgress={this._onProgress}
onMessage={this._onMessage}
onScroll={this._onScroll}
onShouldStartLoadWithRequest={onShouldStartLoadWithRequest}
pagingEnabled={this.props.pagingEnabled}
directionalLockEnabled={this.props.directionalLockEnabled}
onNavigationResponse={this._onNavigationResponse}
keyboardDismissMode={this.props.keyboardDismissMode}
/>;
return (
<View style={styles.container}>
{webView}
{otherView}
</View>
);
}
/**
* Go forward one page in the webview's history.
*/
goForward = () => {
UIManager.dispatchViewManagerCommand(
this.getWebViewHandle(),
this.getCRAWKWebView().Commands.goForward,
null
);
};
/**
* Go back one page in the webview's history.
*/
goBack = () => {
UIManager.dispatchViewManagerCommand(
this.getWebViewHandle(),
this.getCRAWKWebView().Commands.goBack,
null
);
};
/**
* Indicating whether there is a back item in the back-forward list that can be navigated to
*/
canGoBack = () => {
return WKWebViewManager.canGoBack(this.getWebViewHandle());
};
/**
* Indicating whether there is a forward item in the back-forward list that can be navigated to
*/
canGoForward = () => {
return WKWebViewManager.canGoForward(this.getWebViewHandle());
};
/**
* Reloads the current page.
*/
reload = () => {
this.setState({ viewState: WebViewState.LOADING });
UIManager.dispatchViewManagerCommand(
this.getWebViewHandle(),
this.getCRAWKWebView().Commands.reload,
null
);
};
/**
* Stop loading the current page.
*/
stopLoading = () => {
UIManager.dispatchViewManagerCommand(
this.getWebViewHandle(),
this.getCRAWKWebView().Commands.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.getCRAWKWebView().Commands.postMessage,
[String(data)]
);
};
evaluateJavaScript = (js) => {
return WKWebViewManager.evaluateJavaScript(this.getWebViewHandle(), js);
};
/**
* 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);
}
};
getCRAWKWebView = () => {
return (
UIManager.getViewManagerConfig ?
UIManager.getViewManagerConfig('CRAWKWebView') :
UIManager.CRAWKWebView
);
};
/**
* Returns the native webview node.
*/
getWebViewHandle = (): any => {
return ReactNative.findNodeHandle(this.webview);
};
_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);
};
_onProgress = (event: Event) => {
const onProgress = this.props.onProgress;
onProgress && onProgress(event.nativeEvent.progress);
};
_onMessage = (event: Event) => {
var { onMessage } = this.props;
onMessage && onMessage(event);
};
_onScroll = (event: Event) => {
const onScroll = this.props.onScroll;
onScroll && onScroll(event.nativeEvent);
};
_onNavigationResponse = (event: Event) => {
const { onNavigationResponse } = this.props;
onNavigationResponse && onNavigationResponse(event)
}
}
const CRAWKWebView = requireNativeComponent('CRAWKWebView', WKWebView, {
nativeOnly: {
onLoadingStart: true,
onLoadingError: true,
onLoadingFinish: true,
onMessage: true,
messagingEnabled: PropTypes.bool,
}
});
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',
}
});
export default WKWebView;