480 lines
11 KiB
JavaScript
480 lines
11 KiB
JavaScript
/**
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* Copyright (c) 2013-present, Facebook, Inc.
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* All rights reserved.
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*
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* This source code is licensed under the BSD-style license found in the
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* LICENSE file in the root directory of this source tree. An additional grant
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* of patent rights can be found in the PATENTS file in the same directory.
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*
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* The examples provided by Facebook are for non-commercial testing and
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* evaluation purposes only.
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*
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* Facebook reserves all rights not expressly granted.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NON INFRINGEMENT. IN NO EVENT SHALL
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* FACEBOOK BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
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* AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*
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* @flow
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*/
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'use strict';
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var React = require('react');
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var ReactNative = require('react-native');
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var {
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StyleSheet,
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Text,
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TextInput,
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TouchableWithoutFeedback,
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TouchableOpacity,
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View,
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WebView
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} = ReactNative;
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var HEADER = '#3b5998';
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var BGWASH = 'rgba(255,255,255,0.8)';
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var DISABLED_WASH = 'rgba(255,255,255,0.25)';
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var TEXT_INPUT_REF = 'urlInput';
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var WEBVIEW_REF = 'webview';
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var DEFAULT_URL = 'https://m.facebook.com';
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class WebViewExample extends React.Component {
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state = {
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url: DEFAULT_URL,
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status: 'No Page Loaded',
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backButtonEnabled: false,
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forwardButtonEnabled: false,
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loading: true,
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scalesPageToFit: true,
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};
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inputText = '';
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handleTextInputChange = (event) => {
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var url = event.nativeEvent.text;
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if (!/^[a-zA-Z-_]+:/.test(url)) {
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url = 'http://' + url;
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}
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this.inputText = url;
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};
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render() {
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this.inputText = this.state.url;
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return (
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<View style={[styles.container]}>
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<View style={[styles.addressBarRow]}>
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<TouchableOpacity
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onPress={this.goBack}
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style={this.state.backButtonEnabled ? styles.navButton : styles.disabledButton}>
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<Text>
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{'<'}
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</Text>
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</TouchableOpacity>
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<TouchableOpacity
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onPress={this.goForward}
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style={this.state.forwardButtonEnabled ? styles.navButton : styles.disabledButton}>
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<Text>
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{'>'}
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</Text>
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</TouchableOpacity>
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<TextInput
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ref={TEXT_INPUT_REF}
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autoCapitalize="none"
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defaultValue={this.state.url}
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onSubmitEditing={this.onSubmitEditing}
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onChange={this.handleTextInputChange}
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clearButtonMode="while-editing"
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style={styles.addressBarTextInput}
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/>
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<TouchableOpacity onPress={this.pressGoButton}>
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<View style={styles.goButton}>
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<Text>
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Go!
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</Text>
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</View>
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</TouchableOpacity>
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</View>
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<WebView
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ref={WEBVIEW_REF}
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automaticallyAdjustContentInsets={false}
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style={styles.webView}
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source={{uri: this.state.url}}
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javaScriptEnabled={true}
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domStorageEnabled={true}
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decelerationRate="normal"
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onNavigationStateChange={this.onNavigationStateChange}
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onShouldStartLoadWithRequest={this.onShouldStartLoadWithRequest}
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startInLoadingState={true}
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scalesPageToFit={this.state.scalesPageToFit}
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/>
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<View style={styles.statusBar}>
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<Text style={styles.statusBarText}>{this.state.status}</Text>
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</View>
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</View>
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);
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}
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goBack = () => {
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this.refs[WEBVIEW_REF].goBack();
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};
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goForward = () => {
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this.refs[WEBVIEW_REF].goForward();
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};
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reload = () => {
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this.refs[WEBVIEW_REF].reload();
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};
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onShouldStartLoadWithRequest = (event) => {
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// Implement any custom loading logic here, don't forget to return!
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return true;
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};
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onNavigationStateChange = (navState) => {
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this.setState({
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backButtonEnabled: navState.canGoBack,
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forwardButtonEnabled: navState.canGoForward,
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url: navState.url,
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status: navState.title,
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loading: navState.loading,
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scalesPageToFit: true
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});
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};
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onSubmitEditing = (event) => {
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this.pressGoButton();
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};
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pressGoButton = () => {
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var url = this.inputText.toLowerCase();
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if (url === this.state.url) {
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this.reload();
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} else {
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this.setState({
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url: url,
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});
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}
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// dismiss keyboard
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this.refs[TEXT_INPUT_REF].blur();
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};
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}
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class Button extends React.Component {
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_handlePress = () => {
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if (this.props.enabled !== false && this.props.onPress) {
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this.props.onPress();
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}
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};
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render() {
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return (
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<TouchableWithoutFeedback onPress={this._handlePress}>
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<View style={styles.button}>
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<Text>{this.props.text}</Text>
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</View>
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</TouchableWithoutFeedback>
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);
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}
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}
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class ScaledWebView extends React.Component {
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state = {
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scalingEnabled: true,
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};
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render() {
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return (
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<View>
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<WebView
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style={{
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backgroundColor: BGWASH,
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height: 200,
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}}
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source={{uri: 'https://facebook.github.io/react/'}}
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scalesPageToFit={this.state.scalingEnabled}
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/>
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<View style={styles.buttons}>
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{ this.state.scalingEnabled ?
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<Button
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text="Scaling:ON"
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enabled={true}
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onPress={() => this.setState({scalingEnabled: false})}
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/> :
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<Button
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text="Scaling:OFF"
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enabled={true}
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onPress={() => this.setState({scalingEnabled: true})}
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/> }
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</View>
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</View>
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);
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}
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}
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class MessagingTest extends React.Component {
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webview = null
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state = {
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messagesReceivedFromWebView: 0,
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message: '',
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}
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onMessage = e => this.setState({
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messagesReceivedFromWebView: this.state.messagesReceivedFromWebView + 1,
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message: e.nativeEvent.data,
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})
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postMessage = () => {
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if (this.webview) {
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this.webview.postMessage('"Hello" from React Native!');
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}
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}
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render(): ReactElement<any> {
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const {messagesReceivedFromWebView, message} = this.state;
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return (
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<View style={[styles.container, { height: 200 }]}>
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<View style={styles.container}>
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<Text>Messages received from web view: {messagesReceivedFromWebView}</Text>
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<Text>{message || '(No message)'}</Text>
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<View style={styles.buttons}>
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<Button text="Send Message to Web View" enabled onPress={this.postMessage} />
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</View>
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</View>
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<View style={styles.container}>
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<WebView
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ref={webview => { this.webview = webview; }}
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style={{
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backgroundColor: BGWASH,
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height: 100,
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}}
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source={require('./messagingtest.html')}
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onMessage={this.onMessage}
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/>
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</View>
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</View>
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);
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}
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}
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class InjectJS extends React.Component {
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webview = null;
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injectJS = () => {
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const script = 'document.write("Injected JS ")'; // eslint-disable-line quotes
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if (this.webview) {
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this.webview.injectJavaScript(script);
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}
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}
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render() {
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return (
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<View>
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<WebView
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ref={webview => { this.webview = webview; }}
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style={{
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backgroundColor: BGWASH,
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height: 300,
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}}
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source={{uri: 'https://www.facebook.com'}}
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scalesPageToFit={true}
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/>
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<View style={styles.buttons}>
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<Button text="Inject JS" enabled onPress={this.injectJS} />
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</View>
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</View>
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);
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}
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}
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var styles = StyleSheet.create({
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container: {
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flex: 1,
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backgroundColor: HEADER,
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},
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addressBarRow: {
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flexDirection: 'row',
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padding: 8,
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},
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webView: {
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backgroundColor: BGWASH,
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height: 350,
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},
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addressBarTextInput: {
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backgroundColor: BGWASH,
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borderColor: 'transparent',
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borderRadius: 3,
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borderWidth: 1,
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height: 24,
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paddingLeft: 10,
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paddingTop: 3,
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paddingBottom: 3,
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flex: 1,
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fontSize: 14,
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},
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navButton: {
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width: 20,
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padding: 3,
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marginRight: 3,
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alignItems: 'center',
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justifyContent: 'center',
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backgroundColor: BGWASH,
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borderColor: 'transparent',
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borderRadius: 3,
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},
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disabledButton: {
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width: 20,
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padding: 3,
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marginRight: 3,
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alignItems: 'center',
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justifyContent: 'center',
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backgroundColor: DISABLED_WASH,
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borderColor: 'transparent',
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borderRadius: 3,
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},
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goButton: {
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height: 24,
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padding: 3,
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marginLeft: 8,
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alignItems: 'center',
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backgroundColor: BGWASH,
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borderColor: 'transparent',
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borderRadius: 3,
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alignSelf: 'stretch',
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},
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statusBar: {
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flexDirection: 'row',
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alignItems: 'center',
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paddingLeft: 5,
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height: 22,
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},
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statusBarText: {
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color: 'white',
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fontSize: 13,
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},
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spinner: {
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width: 20,
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marginRight: 6,
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},
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buttons: {
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flexDirection: 'row',
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height: 30,
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backgroundColor: 'black',
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alignItems: 'center',
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justifyContent: 'space-between',
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},
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button: {
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flex: 0.5,
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width: 0,
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margin: 5,
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borderColor: 'gray',
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borderWidth: 1,
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backgroundColor: 'gray',
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},
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});
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const HTML = `
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<!DOCTYPE html>\n
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<html>
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<head>
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<title>Hello Static World</title>
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<meta http-equiv="content-type" content="text/html; charset=utf-8">
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<meta name="viewport" content="width=320, user-scalable=no">
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<style type="text/css">
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body {
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margin: 0;
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padding: 0;
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font: 62.5% arial, sans-serif;
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background: #ccc;
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}
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h1 {
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padding: 45px;
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margin: 0;
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text-align: center;
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color: #33f;
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}
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</style>
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</head>
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<body>
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<h1>Hello Static World</h1>
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</body>
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</html>
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`;
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exports.displayName = (undefined: ?string);
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exports.title = '<WebView>';
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exports.description = 'Base component to display web content';
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exports.examples = [
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{
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title: 'Simple Browser',
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render(): React.Element<any> { return <WebViewExample />; }
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},
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{
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title: 'Scale Page to Fit',
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render(): React.Element<any> { return <ScaledWebView/>; }
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},
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{
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title: 'Bundled HTML',
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render(): React.Element<any> {
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return (
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<WebView
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style={{
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backgroundColor: BGWASH,
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height: 100,
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}}
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source={require('./helloworld.html')}
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scalesPageToFit={true}
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/>
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);
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}
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},
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{
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title: 'Static HTML',
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render(): React.Element<any> {
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return (
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<WebView
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style={{
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backgroundColor: BGWASH,
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height: 100,
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}}
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source={{html: HTML}}
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scalesPageToFit={true}
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/>
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);
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}
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},
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{
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title: 'POST Test',
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render(): React.Element<any> {
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return (
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<WebView
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style={{
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backgroundColor: BGWASH,
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height: 100,
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}}
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source={{
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uri: 'http://www.posttestserver.com/post.php',
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method: 'POST',
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body: 'foo=bar&bar=foo'
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}}
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scalesPageToFit={false}
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/>
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);
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}
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},
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{
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title: 'Messaging Test',
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render(): ReactElement<any> { return <MessagingTest />; }
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},
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{
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title: 'Inject JavaScript',
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render(): React.Element<any> { return <InjectJS />; }
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},
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];
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