Updated for newest version of react native

Author: ChelseyM

index.js

@@ -1,87 +1,86 @@
-'use strict';
-
-var React = require('react-native');
-var window = React.Dimensions.get('window');
-var {View, NativeMethodsMixin} = React;
-
-module.exports = React.createClass({
-  displayName: 'InViewPort',
-  mixins: [NativeMethodsMixin],
-  propTypes: {
-    onChange: React.PropTypes.func.isRequired,
-    active: React.PropTypes.bool,
-    delay: React.PropTypes.number
-  },
-
-  getDefaultProps: function () {
-    return {
-      active: true,
-      delay: 100
-    };
-  },
-
-  getInitialState: function(){
-    return {
-      rectTop: 0,
-      rectBottom: 0
-    }
-  },
-  componentDidMount: function () {
-    if (this.props.active) {
-      this.startWatching();
-    }
-  },
-
-  componentWillUnmount: function () {
-    this.stopWatching();
-  },
-
-  componentWillReceiveProps: function (nextProps) {
-    if (nextProps.active) {
-      this.lastValue = null;
-      this.startWatching();
-    } else {
-      this.stopWatching();
-    }
-  },
-
-  startWatching: function () {
-    if (this.interval) { return; }
-    this.interval = setInterval(this.check, this.props.delay);
-  },
-
-  stopWatching: function () {
-    this.interval = clearInterval(this.interval);
-  },
-  /**
-   * Check if the element is within the visible viewport
-   */
-  check: function () {
-    var el = this.refs.myview;
-    var rect = el.measure((ox, oy, width, height, pageX, pageY) => {
-      this.setState({
-        rectTop: pageY,
-        rectBottom: pageY + height,
-        rectWidth: pageX + width,
-      })
-    });
-    var isVisible = (
-      this.state.rectBottom != 0 && this.state.rectTop >= 0 && this.state.rectBottom <= window.height &&
-      this.state.rectWidth > 0 && this.state.rectWidth <= window.width
-    );
-
-    // notify the parent when the value changes
-    if (this.lastValue !== isVisible) {
-      this.lastValue = isVisible;
-      this.props.onChange(isVisible);
-    }
-  },
-
-  render: function () {
-    return (
-      <View ref='myview' {...this.props}>
-        {this.props.children}
-      </View>
-    );
-  }
-});
+'use strict';
+
+var React = require('react');
+var ReactNative = require('react-native');
+var window = ReactNative.Dimensions.get('window');
+var {View, NativeMethodsMixin} = ReactNative;
+
+module.exports = React.createClass({
+  displayName: 'InViewPort',
+  mixins: [NativeMethodsMixin],
+  propTypes: {
+    onChange: React.PropTypes.func.isRequired,
+    active: React.PropTypes.bool,
+    delay: React.PropTypes.number
+  },
+
+  getDefaultProps: function () {
+    return {
+      active: true,
+      delay: 100
+    };
+  },
+
+  getInitialState: function(){
+    return {
+      rectTop: 0,
+      rectBottom: 0
+    }
+  },
+  componentDidMount: function () {
+    if (this.props.active) {
+      this.startWatching();
+    }
+  },
+
+  componentWillUnmount: function () {
+    this.stopWatching();
+  },
+
+  componentWillReceiveProps: function (nextProps) {
+    if (nextProps.active) {
+      this.lastValue = null;
+      this.startWatching();
+    } else {
+      this.stopWatching();
+    }
+  },
+
+  startWatching: function () {
+    if (this.interval) { return; }
+    this.interval = setInterval(this.check, this.props.delay);
+  },
+
+  stopWatching: function () {
+    this.interval = clearInterval(this.interval);
+  },
+  /**
+   * Check if the element is within the visible viewport
+   */
+  check: function () {
+    var el = this.refs.myview;
+    var rect = el.measure((ox, oy, width, height, pageX, pageY) => {
+      this.setState({
+        rectTop: pageY,
+        rectBottom: pageY + height
+      })
+    });
+    var isVisible = (
+      this.state.rectTop >= 0 && this.state.rectBottom <= window.height
+    );
+
+    // notify the parent when the value changes
+    if (this.lastValue !== isVisible) {
+      this.lastValue = isVisible;
+      this.props.onChange(isVisible);
+    }
+  },
+
+  render: function () {
+    return (
+      <View ref='myview' {...this.props}>
+        {this.props.children}
+      </View>
+    );
+  }
+});