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Diffstat (limited to 'packages/demobank-ui/src/components/picker/DatePicker.tsx')
| -rw-r--r-- | packages/demobank-ui/src/components/picker/DatePicker.tsx | 356 |
1 files changed, 356 insertions, 0 deletions
diff --git a/packages/demobank-ui/src/components/picker/DatePicker.tsx b/packages/demobank-ui/src/components/picker/DatePicker.tsx new file mode 100644 index 000000000..94dbc9458 --- /dev/null +++ b/packages/demobank-ui/src/components/picker/DatePicker.tsx @@ -0,0 +1,356 @@ +/* + This file is part of GNU Taler + (C) 2021 Taler Systems S.A. + + GNU Taler is free software; you can redistribute it and/or modify it under the + terms of the GNU General Public License as published by the Free Software + Foundation; either version 3, or (at your option) any later version. + + GNU Taler is distributed in the hope that it will be useful, but WITHOUT ANY + WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR + A PARTICULAR PURPOSE. See the GNU General Public License for more details. + + You should have received a copy of the GNU General Public License along with + GNU Taler; see the file COPYING. If not, see <http://www.gnu.org/licenses/> + */ + +/** + * + * @author Sebastian Javier Marchano (sebasjm) + */ + +import { h, Component } from 'preact'; + +interface Props { + closeFunction?: () => void; + dateReceiver?: (d: Date) => void; + initialDate?: Date; + years?: Array<number>; + opened?: boolean; +} +interface State { + displayedMonth: number; + displayedYear: number; + selectYearMode: boolean; + currentDate: Date; +} +const now = new Date(); + +const monthArrShortFull = [ + 'January', + 'February', + 'March', + 'April', + 'May', + 'June', + 'July', + 'August', + 'September', + 'October', + 'November', + 'December', +]; + +const monthArrShort = [ + 'Jan', + 'Feb', + 'Mar', + 'Apr', + 'May', + 'Jun', + 'Jul', + 'Aug', + 'Sep', + 'Oct', + 'Nov', + 'Dec', +]; + +const dayArr = ['Sun', 'Mon', 'Tue', 'Wed', 'Thu', 'Fri', 'Sat']; + +const yearArr: number[] = []; + +// inspired by https://codepen.io/m4r1vs/pen/MOOxyE +export class DatePicker extends Component<Props, State> { + closeDatePicker() { + this.props.closeFunction && this.props.closeFunction(); // Function gets passed by parent + } + + /** + * Gets fired when a day gets clicked. + * @param {object} e The event thrown by the <span /> element clicked + */ + dayClicked(e: any) { + const element = e.target; // the actual element clicked + + if (element.innerHTML === '') return false; // don't continue if <span /> empty + + // get date from clicked element (gets attached when rendered) + const date = new Date(element.getAttribute('data-value')); + + // update the state + this.setState({ currentDate: date }); + this.passDateToParent(date); + } + + /** + * returns days in month as array + * @param {number} month the month to display + * @param {number} year the year to display + */ + getDaysByMonth(month: number, year: number) { + const calendar = []; + + const date = new Date(year, month, 1); // month to display + + const firstDay = new Date(year, month, 1).getDay(); // first weekday of month + const lastDate = new Date(year, month + 1, 0).getDate(); // last date of month + + let day: number | null = 0; + + // the calendar is 7*6 fields big, so 42 loops + for (let i = 0; i < 42; i++) { + if (i >= firstDay && day !== null) day = day + 1; + if (day !== null && day > lastDate) day = null; + + // append the calendar Array + calendar.push({ + day: day === 0 || day === null ? null : day, // null or number + date: day === 0 || day === null ? null : new Date(year, month, day), // null or Date() + today: + day === now.getDate() && + month === now.getMonth() && + year === now.getFullYear(), // boolean + }); + } + + return calendar; + } + + /** + * Display previous month by updating state + */ + displayPrevMonth() { + if (this.state.displayedMonth <= 0) + this.setState({ + displayedMonth: 11, + displayedYear: this.state.displayedYear - 1, + }); + else + this.setState({ + displayedMonth: this.state.displayedMonth - 1, + }); + + } + + /** + * Display next month by updating state + */ + displayNextMonth() { + if (this.state.displayedMonth >= 11) + this.setState({ + displayedMonth: 0, + displayedYear: this.state.displayedYear + 1, + }); + else + this.setState({ + displayedMonth: this.state.displayedMonth + 1, + }); + + } + + /** + * Display the selected month (gets fired when clicking on the date string) + */ + displaySelectedMonth() { + if (this.state.selectYearMode) + this.toggleYearSelector(); + else { + if (!this.state.currentDate) return false; + this.setState({ + displayedMonth: this.state.currentDate.getMonth(), + displayedYear: this.state.currentDate.getFullYear(), + }); + } + } + + toggleYearSelector() { + this.setState({ selectYearMode: !this.state.selectYearMode }); + } + + changeDisplayedYear(e: any) { + const element = e.target; + this.toggleYearSelector(); + this.setState({ + displayedYear: parseInt(element.innerHTML, 10), + displayedMonth: 0, + }); + } + + /** + * Pass the selected date to parent when 'OK' is clicked + */ + passSavedDateDateToParent() { + this.passDateToParent(this.state.currentDate); + } + passDateToParent(date: Date) { + if (typeof this.props.dateReceiver === 'function') + this.props.dateReceiver(date); + this.closeDatePicker(); + } + + componentDidUpdate() { + // if (this.state.selectYearMode) { + // document.getElementsByClassName('selected')[0].scrollIntoView(); // works in every browser incl. IE, replace with scrollIntoViewIfNeeded when browsers support it + // } + } + + constructor(props: any) { + super(props); + + this.closeDatePicker = this.closeDatePicker.bind(this); + this.dayClicked = this.dayClicked.bind(this); + this.displayNextMonth = this.displayNextMonth.bind(this); + this.displayPrevMonth = this.displayPrevMonth.bind(this); + this.getDaysByMonth = this.getDaysByMonth.bind(this); + this.changeDisplayedYear = this.changeDisplayedYear.bind(this); + this.passDateToParent = this.passDateToParent.bind(this); + this.toggleYearSelector = this.toggleYearSelector.bind(this); + this.displaySelectedMonth = this.displaySelectedMonth.bind(this); + + const initial = props.initialDate || now; + + this.state = { + currentDate: initial, + displayedMonth: initial.getMonth(), + displayedYear: initial.getFullYear(), + selectYearMode: false, + }; + } + + render() { + const { + currentDate, + displayedMonth, + displayedYear, + selectYearMode, + } = this.state; + + return ( + <div> + <div class={`datePicker ${this.props.opened && 'datePicker--opened'}`}> + <div class="datePicker--titles"> + <h3 + style={{ + color: selectYearMode + ? 'rgba(255,255,255,.87)' + : 'rgba(255,255,255,.57)', + }} + onClick={this.toggleYearSelector} + > + {currentDate.getFullYear()} + </h3> + <h2 + style={{ + color: !selectYearMode + ? 'rgba(255,255,255,.87)' + : 'rgba(255,255,255,.57)', + }} + onClick={this.displaySelectedMonth} + > + {dayArr[currentDate.getDay()]},{' '} + {monthArrShort[currentDate.getMonth()]} {currentDate.getDate()} + </h2> + </div> + + {!selectYearMode && ( + <nav> + <span onClick={this.displayPrevMonth} class="icon"> + <i + style={{ transform: 'rotate(180deg)' }} + class="mdi mdi-forward" + /> + </span> + <h4> + {monthArrShortFull[displayedMonth]} {displayedYear} + </h4> + <span onClick={this.displayNextMonth} class="icon"> + <i class="mdi mdi-forward" /> + </span> + </nav> + )} + + <div class="datePicker--scroll"> + {!selectYearMode && ( + <div class="datePicker--calendar"> + <div class="datePicker--dayNames"> + {['S', 'M', 'T', 'W', 'T', 'F', 'S'].map((day, i) => ( + <span key={i}>{day}</span> + ))} + </div> + + <div onClick={this.dayClicked} class="datePicker--days"> + {/* + Loop through the calendar object returned by getDaysByMonth(). + */} + + {this.getDaysByMonth( + this.state.displayedMonth, + this.state.displayedYear, + ).map((day) => { + let selected = false; + + if (currentDate && day.date) + selected = + currentDate.toLocaleDateString() === + day.date.toLocaleDateString(); + + return ( + <span + key={day.day} + class={ + (day.today ? 'datePicker--today ' : '') + + (selected ? 'datePicker--selected' : '') + } + disabled={!day.date} + data-value={day.date} + > + {day.day} + </span> + ); + })} + </div> + </div> + )} + + {selectYearMode && ( + <div class="datePicker--selectYear"> + {(this.props.years || yearArr).map((year) => ( + <span + key={year} + class={year === displayedYear ? 'selected' : ''} + onClick={this.changeDisplayedYear} + > + {year} + </span> + ))} + </div> + )} + </div> + </div> + + <div + class="datePicker--background" + onClick={this.closeDatePicker} + style={{ + display: this.props.opened ? 'block' : 'none', + }} + /> + </div> + ); + } +} + +for (let i = 2010; i <= now.getFullYear() + 10; i++) + yearArr.push(i); + |