ProductFliter.js
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'use strict';
import React from 'react';
import ReactNative from 'react-native';
import Immutable, {Map} from 'immutable';
const {
View,
Text,
ListView,
TouchableOpacity,
Dimensions,
StyleSheet,
} = ReactNative;
export default class ProductFliter extends React.Component {
constructor(props) {
super (props);
this._renderRow = this._renderRow.bind(this);
this._renderSeparator = this._renderSeparator.bind(this);
this.dataSource = new ListView.DataSource({
rowHasChanged: (r1, r2) => r1.key != r2.key,
});
this.state = {
selectedIndex: this.props.resource.fliter,
};
}
shouldComponentUpdate(nextProps){
if (Immutable.is(nextProps.resource, this.props.resource) && Immutable.is(nextProps.selectID, this.props.selectID)) {
return false;
} else {
return true;
}
}
_renderRow(rowData, sectionID, rowID) {
let colorStyle = rowID == this.state.selectedIndex ? {color: '#444444'} : {color: '#b0b0b0'};
return (
<TouchableOpacity
activeOpacity={1}
onPress={() => {
if (this.state.selectedIndex == rowID) {
return;
}
this.setState({
selectedIndex: rowID,
});
this.props.onPressFilter && this.props.onPressFilter(rowID);
}}>
<View key={'row' + rowID} style={styles.rowContainer}>
<Text style={[styles.name, colorStyle]}>{rowData.title}</Text>
</View>
</TouchableOpacity>
);
}
_renderSeparator(sectionID, rowID, adjacentRowHighlighted) {
return (
<View key={'sep' + rowID} style={styles.separator}>
</View>
);
}
render() {
let {resource} = this.props;
let res = resource.list.toJS();
if (res.length == 0 || !res) {
return null;
}
return (
<View style={styles.container}>
<ListView
contentContainerStyle={styles.contentContainer}
enableEmptySections={true}
dataSource={this.dataSource.cloneWithRows(res)}
renderRow={this._renderRow}
renderSeparator={this._renderSeparator}
scrollsToTop={false}
horizontal={true}
showsHorizontalScrollIndicator ={false}
/>
</View>
);
}
}
let {width, height} = Dimensions.get('window');
let styles = StyleSheet.create({
container: {
marginLeft: -1,
width: width + 2,
height: 37,
borderTopColor: 'transparent',
borderBottomColor: '#e5e5e5',
borderWidth: 0.5,
backgroundColor:'white',
},
contentContainer: {
flexDirection: 'row',
},
rowContainer: {
flexDirection: 'row',
justifyContent: 'center',
alignItems: 'center',
width: Math.ceil(width / 5),
height: 37,
backgroundColor:'white',
},
name: {
color: '#b0b0b0',
},
separator: {
width: 0.5,
top: 37 / 4,
height: 37 / 2,
backgroundColor: '#e5e5e5',
},
});