ChannelSelector.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,
Platform,
} = ReactNative;
export default class ChannelSelector 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.id != r2.id,
});
this.channels = [
{
name: 'Men',
value: 'boy',
id: 1,
isSelect: false,
},
{
name: 'Women',
value: 'girl',
id: 2,
isSelect: false,
},
{
name: 'Kids',
value: 'kids',
id: 3,
isSelect: false,
},
];
}
shouldComponentUpdate(nextProps){
if ((nextProps.selectedChannelId == this.props.selectedChannelId)
&& (nextProps.selectedChannelValue == this.props.selectedChannelValue)) {
return false;
} else {
return true;
}
}
_renderRow(rowData, sectionID, rowID) {
let isRowSelected = false;
if (this.props.selectedChannelId >= 1) {
isRowSelected = (rowID == this.props.selectedChannelId - 1);
} else {
isRowSelected = (rowData.value == this.props.selectedChannelValue);
}
let colorStyle = isRowSelected ? {color: '#444444', fontFamily: 'HelveticaNeue', fontSize: 17} : {color: '#b0b0b0', fontFamily: 'HelveticaNeue', fontSize: 17,};
return (
<TouchableOpacity activeOpacity={1} onPress={() => {
if (isRowSelected) {
return;
}
let channel = this.channels[rowID];
this.props.onSelectChannel && this.props.onSelectChannel(channel);
}}>
<View key={'row' + rowID} style={styles.rowContainer}>
<Text style={[styles.name, colorStyle]}>{rowData.name}</Text>
</View>
</TouchableOpacity>
);
}
_renderSeparator(sectionID, rowID, adjacentRowHighlighted) {
return (
<View key={'sep' + rowID} style={styles.separator}>
</View>
);
}
render() {
let {style} = this.props;
return (
<View style={[styles.container, style]}>
<ListView
contentContainerStyle={[styles.contentContainer, style]}
enableEmptySections={true}
dataSource={this.dataSource.cloneWithRows(this.channels)}
renderRow={this._renderRow}
renderSeparator={this._renderSeparator}
scrollEnabled={false}
scrollsToTop={false}
/>
</View>
);
}
}
let {width, height} = Dimensions.get('window');
//let viewHeight = (Platform.OS === 'ios') ? 44 : 50;
let viewHeight = 44;
let styles = StyleSheet.create({
container: {
width: width,
height: viewHeight,
borderTopColor: 'transparent',
borderBottomColor: '#e0e0e0',
borderBottomWidth: 0.5,
backgroundColor:'white',
},
contentContainer: {
flexDirection: 'row',
},
rowContainer: {
flexDirection: 'row',
justifyContent: 'center',
alignItems: 'center',
width: Math.ceil(width / 3),
height: viewHeight,
backgroundColor:'white',
},
name: {
color: '#b0b0b0',
},
separator: {
width: 0.5,
top: 14,
height: 16,
backgroundColor: '#e0e0e0',
},
});