Calendar

import React from 'react'; import CheckBox from 'devextreme-react/check-box'; import SelectBox from 'devextreme-react/select-box'; import DateBox from 'devextreme-react/date-box'; import Calendar from 'devextreme-react/calendar'; class App extends React.Component { constructor() { super(); this.state = { minDateValue: null, maxDateValue: null, disabledDates: null, firstDay: 0, currentValue: new Date(), cellTemplate: null, disabled: false, zoomLevel: 'month' }; this.onCurrentValueChanged = this.onCurrentValueChanged.bind(this); this.onDisabledChanged = this.onDisabledChanged.bind(this); this.onZoomLevelValueChanged = this.onZoomLevelValueChanged.bind(this); this.onZoomLevelChanged = this.onZoomLevelChanged.bind(this); this.setMinDate = this.setMinDate.bind(this); this.setMaxDate = this.setMaxDate.bind(this); this.disableWeekend = this.disableWeekend.bind(this); this.setFirstDay = this.setFirstDay.bind(this); this.useCellTemplate = this.useCellTemplate.bind(this); } render() { const { currentValue, minDateValue, maxDateValue, disabledDates, firstDay, disabled, zoomLevel, cellTemplate } = this.state; return ( <div id="calendar-demo"> <div className="widget-container"> <Calendar id="calendar-container" value={currentValue} onValueChanged={this.onCurrentValueChanged} onOptionChanged={this.onZoomLevelChanged} min={minDateValue} max={maxDateValue} disabledDates={disabledDates} firstDayOfWeek={firstDay} disabled={disabled} zoomLevel={zoomLevel} cellRender={cellTemplate} /> </div> <div className="options"> <div className="caption">Options</div> <div className="option"> <CheckBox defaultValue={false} text="Specified min value" onValueChanged={this.setMinDate} /> </div> <div className="option"> <CheckBox defaultValue={false} text="Specified max value" onValueChanged={this.setMaxDate} /> </div> <div className="option"> <CheckBox defaultValue={false} text="Disable weekend" onValueChanged={this.disableWeekend} /> </div> <div className="option"> <CheckBox defaultValue={false} text="Monday as the first day of a week" onValueChanged={this.setFirstDay} /> </div> <div className="option"> <CheckBox defaultValue={false} text="Use the Custom Cell Template" onValueChanged={this.useCellTemplate} /> </div> <div className="option"> <CheckBox value={disabled} text="Disabled" onValueChanged={this.onDisabledChanged} /> </div> <div className="option"> <span>Zoom level</span> <SelectBox id="zoom-level" dataSource={['month', 'year', 'decade', 'century']} value={zoomLevel} onValueChanged={this.onZoomLevelValueChanged} /> </div> <div className="option"> <span>Selected date</span> <DateBox id="selected-date" value={currentValue} width="100%" onValueChanged={this.onCurrentValueChanged} /> </div> </div> </div> ); } onCurrentValueChanged(e) { this.setState({ currentValue: e.value }); } onDisabledChanged(e) { this.setState({ disabled: e.value }); } onZoomLevelValueChanged(e) { this.setState({ zoomLevel: e.value }); } onZoomLevelChanged(e) { if(e.name === 'zoomLevel') { this.setState({ zoomLevel: e.value }); } } setMinDate(e) { this.setState({ minDateValue: e.value ? new Date((new Date).getTime() - 1000 * 60 * 60 * 24 * 3) : undefined }); } setMaxDate(e) { this.setState({ maxDateValue: e.value ? new Date((new Date).getTime() + 1000 * 60 * 60 * 24 * 3) : undefined }); } disableWeekend(e) { this.setState({ disabledDates: e.value ? (data) => data.view === 'month' && isWeekend(data.date) : undefined }); } setFirstDay(e) { this.setState({ firstDay: e.value ? 1 : 0 }); } useCellTemplate(e) { this.setState({ cellTemplate: e.value ? CustomCell : undefined }); } } function CustomCell(cell) { return ( <span className={getCellCssClass(cell.date)}> { cell.text } </span> ); } function getCellCssClass(date) { let cssClass = ''; const holydays = [[1, 0], [4, 6], [25, 11]]; if(isWeekend(date)) { cssClass = 'weekend'; } holydays.forEach((item) => { if(date.getDate() === item[0] && date.getMonth() === item[1]) { cssClass = 'holyday'; return false; } }); return cssClass; } function isWeekend(date) { const day = date.getDay(); return day === 0 || day === 6; } export default App;