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TouchableExample.js
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TouchableExample.js
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/**
* 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 {
PixelRatio,
Image,
StyleSheet,
Text,
TouchableHighlight,
TouchableOpacity,
UIManager,
View,
} = React;
exports.displayName = (undefined: ?string);
exports.description = 'Touchable and onPress examples.';
exports.title = '<Touchable*> and onPress';
exports.examples = [
{
title: '<TouchableHighlight>',
description: 'TouchableHighlight works by adding an extra view with a ' +
'black background under the single child view. This works best when the ' +
'child view is fully opaque, although it can be made to work as a simple ' +
'background color change as well with the activeOpacity and ' +
'underlayColor props.',
render: function() {
return (
<View>
<View style={styles.row}>
<TouchableHighlight
style={styles.wrapper}
onPress={() => console.log('stock THW image - highlight')}>
<Image
source={heartImage}
style={styles.image}
/>
</TouchableHighlight>
<TouchableHighlight
style={styles.wrapper}
activeOpacity={1}
animationVelocity={0}
underlayColor="rgb(210, 230, 255)"
onPress={() => console.log('custom THW text - hightlight')}>
<View style={styles.wrapperCustom}>
<Text style={styles.text}>
Tap Here For Custom Highlight!
</Text>
</View>
</TouchableHighlight>
</View>
</View>
);
},
}, {
title: '<Text onPress={fn}> with highlight',
render: function(): ReactElement {
return <TextOnPressBox />;
},
}, {
title: 'Touchable feedback events',
description: '<Touchable*> components accept onPress, onPressIn, ' +
'onPressOut, and onLongPress as props.',
render: function(): ReactElement {
return <TouchableFeedbackEvents />;
},
}, {
title: 'Touchable delay for events',
description: '<Touchable*> components also accept delayPressIn, ' +
'delayPressOut, and delayLongPress as props. These props impact the ' +
'timing of feedback events.',
render: function(): ReactElement {
return <TouchableDelayEvents />;
},
}, {
title: '3D Touch / Force Touch',
description: 'iPhone 6s and 6s plus support 3D touch, which adds a force property to touches',
render: function(): ReactElement {
return <ForceTouchExample />;
},
platform: 'ios',
}];
var TextOnPressBox = React.createClass({
getInitialState: function() {
return {
timesPressed: 0,
};
},
textOnPress: function() {
this.setState({
timesPressed: this.state.timesPressed + 1,
});
},
render: function() {
var textLog = '';
if (this.state.timesPressed > 1) {
textLog = this.state.timesPressed + 'x text onPress';
} else if (this.state.timesPressed > 0) {
textLog = 'text onPress';
}
return (
<View>
<Text
style={styles.textBlock}
onPress={this.textOnPress}>
Text has built-in onPress handling
</Text>
<View style={styles.logBox}>
<Text>
{textLog}
</Text>
</View>
</View>
);
}
});
var TouchableFeedbackEvents = React.createClass({
getInitialState: function() {
return {
eventLog: [],
};
},
render: function() {
return (
<View testID="touchable_feedback_events">
<View style={[styles.row, {justifyContent: 'center'}]}>
<TouchableOpacity
style={styles.wrapper}
testID="touchable_feedback_events_button"
accessibilityLabel="touchable feedback events"
accessibilityTraits="button"
accessibilityComponentType="button"
onPress={() => this._appendEvent('press')}
onPressIn={() => this._appendEvent('pressIn')}
onPressOut={() => this._appendEvent('pressOut')}
onLongPress={() => this._appendEvent('longPress')}>
<Text style={styles.button}>
Press Me
</Text>
</TouchableOpacity>
</View>
<View testID="touchable_feedback_events_console" style={styles.eventLogBox}>
{this.state.eventLog.map((e, ii) => <Text key={ii}>{e}</Text>)}
</View>
</View>
);
},
_appendEvent: function(eventName) {
var limit = 6;
var eventLog = this.state.eventLog.slice(0, limit - 1);
eventLog.unshift(eventName);
this.setState({eventLog});
},
});
var TouchableDelayEvents = React.createClass({
getInitialState: function() {
return {
eventLog: [],
};
},
render: function() {
return (
<View testID="touchable_delay_events">
<View style={[styles.row, {justifyContent: 'center'}]}>
<TouchableOpacity
style={styles.wrapper}
testID="touchable_delay_events_button"
onPress={() => this._appendEvent('press')}
delayPressIn={400}
onPressIn={() => this._appendEvent('pressIn - 400ms delay')}
delayPressOut={1000}
onPressOut={() => this._appendEvent('pressOut - 1000ms delay')}
delayLongPress={800}
onLongPress={() => this._appendEvent('longPress - 800ms delay')}>
<Text style={styles.button}>
Press Me
</Text>
</TouchableOpacity>
</View>
<View style={styles.eventLogBox} testID="touchable_delay_events_console">
{this.state.eventLog.map((e, ii) => <Text key={ii}>{e}</Text>)}
</View>
</View>
);
},
_appendEvent: function(eventName) {
var limit = 6;
var eventLog = this.state.eventLog.slice(0, limit - 1);
eventLog.unshift(eventName);
this.setState({eventLog});
},
});
var ForceTouchExample = React.createClass({
getInitialState: function() {
return {
force: 0,
};
},
_renderConsoleText: function() {
return View.forceTouchAvailable ?
'Force: ' + this.state.force.toFixed(3) :
'3D Touch is not available on this device';
},
render: function() {
return (
<View testID="touchable_3dtouch_event">
<View style={styles.forceTouchBox} testID="touchable_3dtouch_output">
<Text>{this._renderConsoleText()}</Text>
</View>
<View style={[styles.row, {justifyContent: 'center'}]}>
<View
style={styles.wrapper}
testID="touchable_3dtouch_button"
onStartShouldSetResponder={() => true}
onResponderMove={(event) => this.setState({force: event.nativeEvent.force})}
onResponderRelease={(event) => this.setState({force: 0})}>
<Text style={styles.button}>
Press Me
</Text>
</View>
</View>
</View>
);
},
});
var heartImage = {uri: 'https://pbs.twimg.com/media/BlXBfT3CQAA6cVZ.png:small'};
var styles = StyleSheet.create({
row: {
justifyContent: 'center',
flexDirection: 'row',
},
icon: {
width: 24,
height: 24,
},
image: {
width: 50,
height: 50,
},
text: {
fontSize: 16,
},
button: {
color: '#007AFF',
},
wrapper: {
borderRadius: 8,
},
wrapperCustom: {
borderRadius: 8,
padding: 6,
},
logBox: {
padding: 20,
margin: 10,
borderWidth: StyleSheet.hairlineWidth,
borderColor: '#f0f0f0',
backgroundColor: '#f9f9f9',
},
eventLogBox: {
padding: 10,
margin: 10,
height: 120,
borderWidth: StyleSheet.hairlineWidth,
borderColor: '#f0f0f0',
backgroundColor: '#f9f9f9',
},
forceTouchBox: {
padding: 10,
margin: 10,
borderWidth: StyleSheet.hairlineWidth,
borderColor: '#f0f0f0',
backgroundColor: '#f9f9f9',
alignItems: 'center',
},
textBlock: {
fontWeight: '500',
color: 'blue',
},
});