react-native/Examples/UIExplorer/js/ScrollViewSimpleExample.js

90 lines
2.4 KiB
JavaScript

/**
* Copyright (c) 2013-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.
*
* 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');
var ReactNative = require('react-native');
var {
ScrollView,
StyleSheet,
Text,
TouchableOpacity
} = ReactNative;
var NUM_ITEMS = 20;
class ScrollViewSimpleExample extends React.Component {
static title = '<ScrollView>';
static description = 'Component that enables scrolling through child components.';
makeItems = (nItems: number, styles): Array<any> => {
var items = [];
for (var i = 0; i < nItems; i++) {
items[i] = (
<TouchableOpacity key={i} style={styles}>
<Text>{'Item ' + i}</Text>
</TouchableOpacity>
);
}
return items;
};
render() {
// One of the items is a horizontal scroll view
var items = this.makeItems(NUM_ITEMS, styles.itemWrapper);
items[4] = (
<ScrollView key={'scrollView'} horizontal={true}>
{this.makeItems(NUM_ITEMS, [styles.itemWrapper, styles.horizontalItemWrapper])}
</ScrollView>
);
var verticalScrollView = (
<ScrollView style={styles.verticalScrollView}>
{items}
</ScrollView>
);
return verticalScrollView;
}
}
var styles = StyleSheet.create({
verticalScrollView: {
margin: 10,
},
itemWrapper: {
backgroundColor: '#dddddd',
alignItems: 'center',
borderRadius: 5,
borderWidth: 5,
borderColor: '#a52a2a',
padding: 30,
margin: 5,
},
horizontalItemWrapper: {
padding: 50
}
});
module.exports = ScrollViewSimpleExample;