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Remove Listview, add Flatlist #24

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Remove Listview, add Flatlist #24

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49 changes: 27 additions & 22 deletions MonthList.js
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Original file line number Diff line number Diff line change
Expand Up @@ -2,64 +2,64 @@
* Created by TinySymphony on 2017-05-11.
*/

import React, {PropTypes, Component} from 'react';
import React, {PropTypes, PureComponent} from 'react';
import {
View,
Text,
ListView,
FlatList,
Dimensions
} from 'react-native';
import Moment from 'moment';
import styles from './CalendarStyle';
import Month from './Month';

const {width} = Dimensions.get('window');
export default class MonthList extends Component {

export default class MonthList extends PureComponent {
constructor (props) {
super(props);
this.ds = new ListView.DataSource({
rowHasChanged: (r1, r2) => {
return r2.shouldUpdate;
}
});
this.monthList = [];
this.state = {
dataSource: this.ds.cloneWithRows(this._getMonthList())
dataSource: this._getMonthList()
};
this._renderMonth = this._renderMonth.bind(this);
this._shouldUpdate = this._shouldUpdate.bind(this);
this._checkRange = this._checkRange.bind(this);
this._getWeekNums = this._getWeekNums.bind(this);
this._scrollToSelecetdMonth = this._scrollToSelecetdMonth.bind(this);
}
componentWillReceiveProps (nextProps) {

componentDidUpdate(prevProps) {
let isDateUpdated = ['startDate', 'endDate', 'minDate', 'maxDate'].reduce((prev, next) => {
if (prev || nextProps[next] !== this.props[next]) {
if (prev || prevProps[next] !== this.props[next]) {
return true;
}
return prev;
}, false);
if (isDateUpdated) {
this.setState({
dataSource:
this.state.dataSource.cloneWithRows(this._getMonthList(nextProps))
dataSource: this._getMonthList(this.props)
});
}
}
_renderMonth (month) {

_renderMonth = ({item}) => {
return (
<Month
month={month.date || {}}
month={item.date || {}}
{...this.props}
/>
);
}
};

_checkRange (date, start, end) {
if (!date || !start) return false;
if (!end) return date.year() === start.year() && date.month() === start.month();
if (date.year() < start.year() || (date.year() === start.year() && date.month() < start.month())) return false;
if (date.year() > end.year() || (date.year() === end.year() && date.month() > end.month())) return false;
return true;
}

_shouldUpdate (month, props) {
if (!props) return false;
const {
Expand All @@ -74,6 +74,7 @@ export default class MonthList extends Component {
if (prev || next) return true;
return false;
}

_getMonthList (props) {
let minDate = (props || this.props).minDate.clone().date(1);
let maxDate = (props || this.props).maxDate.clone();
Expand All @@ -92,6 +93,7 @@ export default class MonthList extends Component {
}
return monthList;
}

_getWeekNums(start, end) {
let clonedMoment = Moment(start), date, day, num, y, m, total = 0;
while (!clonedMoment.isSame(end, 'months')) {
Expand All @@ -105,6 +107,7 @@ export default class MonthList extends Component {
}
return total;
}

_scrollToSelecetdMonth () {
const {
startDate,
Expand All @@ -114,23 +117,25 @@ export default class MonthList extends Component {
startDate.month() - minDate.month();
let weekOffset = this._getWeekNums(minDate, startDate);
setTimeout(() => {
this.list && this.list.scrollTo({
x: 0,
y: monthOffset * (24 + 25) + (monthOffset ? weekOffset * Math.ceil(width / 7 + 10) : 0),
this.list && this.list.scrollToOffset({
offset: monthOffset * (24 + 25) + (monthOffset ? weekOffset * Math.ceil(width / 7 + 10) : 0),
animated: true
});
}, 400);
}

componentDidMount () {
this.props.startDate && this._scrollToSelecetdMonth();
}

render () {
return (
<ListView
<FlatList
ref={(list) => {this.list = list;}}
style={styles.scrollArea}
dataSource={this.state.dataSource}
renderRow={this._renderMonth}
data={this.state.dataSource}
renderItem={this._renderMonth}
keyExtractor={() => String(Math.random())}
pageSize={2}
initialListSize={2}
showsVerticalScrollIndicator={false}
Expand Down