react-native/Examples/UIExplorer/WebViewExample.js

238 lines
5.7 KiB
JavaScript

/**
* The examples provided by Facebook are for non-commercial testing and
* evaluation purposes only.
*
* Facebook reserves all rights not expressly granted.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NON INFRINGEMENT. IN NO EVENT SHALL
* FACEBOOK BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
* AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*
* @flow
*/
'use strict';
var React = require('react-native');
var {
StyleSheet,
Text,
TextInput,
TouchableOpacity,
View,
WebView
} = React;
var HEADER = '#3b5998';
var BGWASH = 'rgba(255,255,255,0.8)';
var DISABLED_WASH = 'rgba(255,255,255,0.25)';
var TEXT_INPUT_REF = 'urlInput';
var WEBVIEW_REF = 'webview';
var DEFAULT_URL = 'https://m.facebook.com';
var WebViewExample = React.createClass({
getInitialState: function() {
return {
url: DEFAULT_URL,
status: 'No Page Loaded',
backButtonEnabled: false,
forwardButtonEnabled: false,
loading: true,
scalesPageToFit: true,
};
},
inputText: '',
handleTextInputChange: function(event) {
this.inputText = event.nativeEvent.text;
},
render: function() {
this.inputText = this.state.url;
return (
<View style={[styles.container]}>
<View style={[styles.addressBarRow]}>
<TouchableOpacity
onPress={this.goBack}
style={this.state.backButtonEnabled ? styles.navButton : styles.disabledButton}>
<Text>
{'<'}
</Text>
</TouchableOpacity>
<TouchableOpacity
onPress={this.goForward}
style={this.state.forwardButtonEnabled ? styles.navButton : styles.disabledButton}>
<Text>
{'>'}
</Text>
</TouchableOpacity>
<TextInput
ref={TEXT_INPUT_REF}
autoCapitalize="none"
defaultValue={this.state.url}
onSubmitEditing={this.onSubmitEditing}
onChange={this.handleTextInputChange}
clearButtonMode="while-editing"
style={styles.addressBarTextInput}
/>
<TouchableOpacity onPress={this.pressGoButton}>
<View style={styles.goButton}>
<Text>
Go!
</Text>
</View>
</TouchableOpacity>
</View>
<WebView
ref={WEBVIEW_REF}
automaticallyAdjustContentInsets={false}
style={styles.webView}
url={this.state.url}
javaScriptEnabled={true}
domStorageEnabled={true}
onNavigationStateChange={this.onNavigationStateChange}
onShouldStartLoadWithRequest={this.onShouldStartLoadWithRequest}
startInLoadingState={true}
scalesPageToFit={this.state.scalesPageToFit}
/>
<View style={styles.statusBar}>
<Text style={styles.statusBarText}>{this.state.status}</Text>
</View>
</View>
);
},
goBack: function() {
this.refs[WEBVIEW_REF].goBack();
},
goForward: function() {
this.refs[WEBVIEW_REF].goForward();
},
reload: function() {
this.refs[WEBVIEW_REF].reload();
},
onShouldStartLoadWithRequest: function(event) {
// Implement any custom loading logic here, don't forget to return!
return true;
},
onNavigationStateChange: function(navState) {
this.setState({
backButtonEnabled: navState.canGoBack,
forwardButtonEnabled: navState.canGoForward,
url: navState.url,
status: navState.title,
loading: navState.loading,
scalesPageToFit: true
});
},
onSubmitEditing: function(event) {
this.pressGoButton();
},
pressGoButton: function() {
var url = this.inputText.toLowerCase();
if (url === this.state.url) {
this.reload();
} else {
this.setState({
url: url,
});
}
// dismiss keyboard
this.refs[TEXT_INPUT_REF].blur();
},
});
var styles = StyleSheet.create({
container: {
flex: 1,
backgroundColor: HEADER,
},
addressBarRow: {
flexDirection: 'row',
padding: 8,
},
webView: {
backgroundColor: BGWASH,
height: 350,
},
addressBarTextInput: {
backgroundColor: BGWASH,
borderColor: 'transparent',
borderRadius: 3,
borderWidth: 1,
height: 24,
paddingLeft: 10,
paddingTop: 3,
paddingBottom: 3,
flex: 1,
fontSize: 14,
},
navButton: {
width: 20,
padding: 3,
marginRight: 3,
alignItems: 'center',
justifyContent: 'center',
backgroundColor: BGWASH,
borderColor: 'transparent',
borderRadius: 3,
},
disabledButton: {
width: 20,
padding: 3,
marginRight: 3,
alignItems: 'center',
justifyContent: 'center',
backgroundColor: DISABLED_WASH,
borderColor: 'transparent',
borderRadius: 3,
},
goButton: {
height: 24,
padding: 3,
marginLeft: 8,
alignItems: 'center',
backgroundColor: BGWASH,
borderColor: 'transparent',
borderRadius: 3,
alignSelf: 'stretch',
},
statusBar: {
flexDirection: 'row',
alignItems: 'center',
paddingLeft: 5,
height: 22,
},
statusBarText: {
color: 'white',
fontSize: 13,
},
spinner: {
width: 20,
marginRight: 6,
},
});
exports.displayName = (undefined: ?string);
exports.title = '<WebView>';
exports.description = 'Base component to display web content';
exports.examples = [
{
title: 'WebView',
render(): ReactElement { return <WebViewExample />; }
}
];