Re-license and rename UIExplorer integration test app as RNTester

Reviewed By: yungsters

Differential Revision: D4950085

fbshipit-source-id: 44574b5d0ef0d2ad5dfc714309b18dc69cbad9ff

RNTester/js/NetInfoExample.js

@@ -0,0 +1,185 @@
+/**
+ * Copyright (c) 2015-present, Facebook, Inc.
+ * All rights reserved.
+ *
+ * This source code is licensed under the BSD-style license found in the
+ * LICENSE file in the root directory of this source tree. An additional grant
+ * of patent rights can be found in the PATENTS file in the same directory.
+ *
+ * @flow
+ * @providesModule NetInfoExample
+ */
+'use strict';
+
+const React = require('react');
+const ReactNative = require('react-native');
+const {
+  NetInfo,
+  Text,
+  View,
+  TouchableWithoutFeedback,
+} = ReactNative;
+
+class ConnectionInfoSubscription extends React.Component {
+  state = {
+    connectionInfoHistory: [],
+  };
+
+  componentDidMount() {
+    NetInfo.addEventListener(
+        'change',
+        this._handleConnectionInfoChange
+    );
+  }
+
+  componentWillUnmount() {
+    NetInfo.removeEventListener(
+        'change',
+        this._handleConnectionInfoChange
+    );
+  }
+
+  _handleConnectionInfoChange = (connectionInfo) => {
+    const connectionInfoHistory = this.state.connectionInfoHistory.slice();
+    connectionInfoHistory.push(connectionInfo);
+    this.setState({
+      connectionInfoHistory,
+    });
+  };
+
+  render() {
+    return (
+        <View>
+          <Text>{JSON.stringify(this.state.connectionInfoHistory)}</Text>
+        </View>
+    );
+  }
+}
+
+class ConnectionInfoCurrent extends React.Component {
+  state = {
+    connectionInfo: null,
+  };
+
+  componentDidMount() {
+    NetInfo.addEventListener(
+        'change',
+        this._handleConnectionInfoChange
+    );
+    NetInfo.fetch().done(
+        (connectionInfo) => { this.setState({connectionInfo}); }
+    );
+  }
+
+  componentWillUnmount() {
+    NetInfo.removeEventListener(
+        'change',
+        this._handleConnectionInfoChange
+    );
+  }
+
+  _handleConnectionInfoChange = (connectionInfo) => {
+    this.setState({
+      connectionInfo,
+    });
+  };
+
+  render() {
+    return (
+        <View>
+          <Text>{this.state.connectionInfo}</Text>
+        </View>
+    );
+  }
+}
+
+class IsConnected extends React.Component {
+  state = {
+    isConnected: null,
+  };
+
+  componentDidMount() {
+    NetInfo.isConnected.addEventListener(
+        'change',
+        this._handleConnectivityChange
+    );
+    NetInfo.isConnected.fetch().done(
+        (isConnected) => { this.setState({isConnected}); }
+    );
+  }
+
+  componentWillUnmount() {
+    NetInfo.isConnected.removeEventListener(
+        'change',
+        this._handleConnectivityChange
+    );
+  }
+
+  _handleConnectivityChange = (isConnected) => {
+    this.setState({
+      isConnected,
+    });
+  };
+
+  render() {
+    return (
+        <View>
+          <Text>{this.state.isConnected ? 'Online' : 'Offline'}</Text>
+        </View>
+    );
+  }
+}
+
+class IsConnectionExpensive extends React.Component {
+  state = {
+    isConnectionExpensive: (null : ?boolean),
+  };
+
+  _checkIfExpensive = () => {
+    NetInfo.isConnectionExpensive().then(
+        isConnectionExpensive => { this.setState({isConnectionExpensive}); }
+    );
+  };
+
+  render() {
+    return (
+        <View>
+          <TouchableWithoutFeedback onPress={this._checkIfExpensive}>
+            <View>
+              <Text>Click to see if connection is expensive:
+                {this.state.isConnectionExpensive === true ? 'Expensive' :
+                this.state.isConnectionExpensive === false ? 'Not expensive'
+                : 'Unknown'}
+              </Text>
+            </View>
+          </TouchableWithoutFeedback>
+        </View>
+    );
+  }
+}
+
+exports.title = 'NetInfo';
+exports.description = 'Monitor network status';
+exports.examples = [
+  {
+    title: 'NetInfo.isConnected',
+    description: 'Asynchronously load and observe connectivity',
+    render(): React.Element<any> { return <IsConnected />; }
+  },
+  {
+    title: 'NetInfo.update',
+    description: 'Asynchronously load and observe connectionInfo',
+    render(): React.Element<any> { return <ConnectionInfoCurrent />; }
+  },
+  {
+    title: 'NetInfo.updateHistory',
+    description: 'Observed updates to connectionInfo',
+    render(): React.Element<any> { return <ConnectionInfoSubscription />; }
+  },
+  {
+    platform: 'android',
+    title: 'NetInfo.isConnectionExpensive (Android)',
+    description: 'Asynchronously check isConnectionExpensive',
+    render(): React.Element<any> { return <IsConnectionExpensive />; }
+  },
+];