react-native/Libraries/Inspector/PerformanceOverlay.js

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/**
* Copyright (c) 2015-present, Facebook, Inc.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*
* @providesModule PerformanceOverlay
* @flow
*/
'use strict';
var PerformanceLogger = require('PerformanceLogger');
var React = require('React');
var StyleSheet = require('StyleSheet');
var Text = require('Text');
var View = require('View');
class PerformanceOverlay extends React.Component<{}> {
render() {
var perfLogs = PerformanceLogger.getTimespans();
var items = [];
for (var key in perfLogs) {
if (perfLogs[key].totalTime) {
var unit = (key === 'BundleSize') ? 'b' : 'ms';
items.push(
<View style={styles.row} key={key}>
<Text style={[styles.text, styles.label]}>{key}</Text>
<Text style={[styles.text, styles.totalTime]}>
{perfLogs[key].totalTime + unit}
</Text>
</View>
);
}
}
return (
<View style={styles.container}>
{items}
</View>
);
}
}
var styles = StyleSheet.create({
container: {
height: 100,
paddingTop: 10,
},
label: {
flex: 1,
},
row: {
flexDirection: 'row',
paddingHorizontal: 10,
},
text: {
color: 'white',
fontSize: 12,
},
totalTime: {
paddingRight: 100,
},
});
module.exports = PerformanceOverlay;