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import { Calendar, DateInput, EventClickArg, EventSourceInput } from '@fullcalendar/core';
import dayGridPlugin from '@fullcalendar/daygrid';
import multiMonthPlugin from '@fullcalendar/multimonth';
import timeGrid from '@fullcalendar/timegrid';
import interactionPlugin from '@fullcalendar/interaction';
import { IReactionDisposer, action, computed, makeObservable, observable, reaction } from 'mobx';
import { observer } from 'mobx-react';
import * as React from 'react';
import { dateRangeStrToDates } from '../../../../ClientUtils';
import { Doc } from '../../../../fields/Doc';
import { BoolCast, NumCast, StrCast } from '../../../../fields/Types';
import { CollectionSubView, SubCollectionViewProps } from '../../collections/CollectionSubView';
import './CalendarBox.scss';
import { Id } from '../../../../fields/FieldSymbols';
import { DocServer } from '../../../DocServer';
import { DocumentView } from '../DocumentView';
import { OpenWhere } from '../OpenWhere';
import { DragManager } from '../../../util/DragManager';
import { DocData } from '../../../../fields/DocSymbols';
type CalendarView = 'multiMonth' | 'dayGridMonth' | 'timeGridWeek' | 'timeGridDay';
@observer
export class CalendarBox extends CollectionSubView() {
_calendarRef: HTMLDivElement | null = null;
_calendar: Calendar | undefined;
_oldWheel: HTMLElement | null = null;
_observer: ResizeObserver | undefined;
_eventsDisposer: IReactionDisposer | undefined;
_selectDisposer: IReactionDisposer | undefined;
constructor(props: SubCollectionViewProps) {
super(props);
makeObservable(this);
}
@observable _multiMonth = 0;
isMultiMonth: boolean | undefined;
componentDidMount(): void {
this._props.setContentViewBox?.(this);
this._eventsDisposer = reaction(
() => ({ events: this.calendarEvents }),
({ events }) => this._calendar?.setOption('events', events),
{ fireImmediately: true }
);
this._selectDisposer = reaction(
() => ({ initialDate: this.dateSelect }),
({ initialDate }) => {
const state = this._calendar?.getCurrentData();
state &&
this._calendar?.dispatch({
type: 'CHANGE_DATE',
dateMarker: state.dateEnv.createMarker(initialDate.start),
});
setTimeout(() => (initialDate.start.toISOString() !== initialDate.end.toISOString() ? this._calendar?.select(initialDate.start, initialDate.end) : this._calendar?.select(initialDate.start)));
},
{ fireImmediately: true }
);
}
componentWillUnmount(): void {
this._eventsDisposer?.();
this._selectDisposer?.();
}
@computed get calendarEvents(): EventSourceInput | undefined {
return this.childDocs.map(doc => {
const { start, end } = dateRangeStrToDates(StrCast(doc.date_range));
return {
title: StrCast(doc.title),
start,
end,
groupId: doc[Id],
startEditable: true,
endEditable: true,
allDay: BoolCast(doc.allDay),
classNames: ['mother'], // will determine the style
editable: true, // subject to change in the future
backgroundColor: this.eventToColor(doc),
borderColor: this.eventToColor(doc),
color: 'white',
extendedProps: {
description: StrCast(doc.description),
},
};
});
}
@computed get dateRangeStrDates() {
return dateRangeStrToDates(StrCast(this.Document.date_range));
}
get dateSelect() {
return dateRangeStrToDates(StrCast(this.Document.date));
}
// Choose a calendar view based on the date range
@computed get calendarViewType(): CalendarView {
if (this.dataDoc[this.fieldKey + '_calendarType']) return StrCast(this.dataDoc[this.fieldKey + '_calendarType']) as CalendarView;
if (this.isMultiMonth) return 'multiMonth';
const { start, end } = this.dateRangeStrDates;
if (start.getFullYear() !== end.getFullYear() || start.getMonth() !== end.getMonth()) return 'multiMonth';
if (Math.abs(start.getDay() - end.getDay()) > 7) return 'dayGridMonth';
return 'timeGridWeek';
}
// TODO: Return a different color based on the event type
eventToColor(event: Doc): string {
return 'red';
}
internalDocDrop(e: Event, de: DragManager.DropEvent, docDragData: DragManager.DocumentDragData) {
if (!super.onInternalDrop(e, de)) return false;
de.complete.docDragData?.droppedDocuments.forEach(doc => {
const today = new Date().toISOString();
if (!doc.date_range) doc[DocData].date_range = `${today}|${today}`;
});
return true;
}
onInternalDrop = (e: Event, de: DragManager.DropEvent): boolean => {
if (de.complete.docDragData?.droppedDocuments.length) return this.internalDocDrop(e, de, de.complete.docDragData);
return false;
};
handleEventClick = (arg: EventClickArg) => {
const doc = DocServer.GetCachedRefField(arg.event._def.groupId ?? '');
DocumentView.DeselectAll();
if (doc) {
DocumentView.showDocument(doc, { openLocation: OpenWhere.lightboxAlways });
arg.jsEvent.stopPropagation();
}
};
// https://fullcalendar.io
renderCalendar = () => {
const cal = !this._calendarRef
? null
: (this._calendar = new Calendar(this._calendarRef, {
plugins: [multiMonthPlugin, dayGridPlugin, timeGrid, interactionPlugin],
headerToolbar: {
left: 'prev,next today',
center: 'title',
right: 'multiMonth dayGridMonth timeGridWeek timeGridDay',
},
selectable: true,
initialView: this.calendarViewType === 'multiMonth' ? undefined : this.calendarViewType,
initialDate: this.dateSelect.start,
navLinks: true,
editable: false,
displayEventTime: false,
displayEventEnd: false,
select: info => {
const start = dateRangeStrToDates(info.startStr).start.toISOString();
const end = dateRangeStrToDates(info.endStr).start.toISOString();
this.dataDoc.date = start + '|' + end;
},
aspectRatio: NumCast(this.Document.width) / NumCast(this.Document.height),
events: this.calendarEvents,
eventClick: this.handleEventClick,
}));
cal?.render();
setTimeout(() => cal?.view.calendar.select(this.dateSelect.start, this.dateSelect.end));
};
onPassiveWheel = (e: WheelEvent) => e.stopPropagation();
render() {
return (
<div
key={this.calendarViewType}
className="calendarBox"
onPointerDown={e => {
setTimeout(
action(() => {
const cname = (e.nativeEvent.target as HTMLButtonElement)?.className ?? '';
if (cname.includes('multiMonth')) this.dataDoc[this.fieldKey + '_calendarType'] = 'multiMonth';
if (cname.includes('dayGridMonth')) this.dataDoc[this.fieldKey + '_calendarType'] = 'dayGridMonth';
if (cname.includes('timeGridWeek')) this.dataDoc[this.fieldKey + '_calendarType'] = 'timeGridWeek';
if (cname.includes('timeGridDay')) this.dataDoc[this.fieldKey + '_calendarType'] = 'timeGridDay';
})
);
}}
style={{
width: this._props.PanelWidth() / this._props.ScreenToLocalTransform().Scale,
height: this._props.PanelHeight() / this._props.ScreenToLocalTransform().Scale,
transform: `scale(${this._props.ScreenToLocalTransform().Scale})`,
}}
ref={r => {
this.createDashEventsTarget(r);
this._oldWheel?.removeEventListener('wheel', this.onPassiveWheel);
this._oldWheel = r;
// prevent wheel events from passively propagating up through containers and prevents containers from preventDefault which would block scrolling
r?.addEventListener('wheel', this.onPassiveWheel, { passive: false });
if (r) {
this._observer?.disconnect();
(this._observer = new ResizeObserver(() => {
this._calendar?.setOption('aspectRatio', NumCast(this.Document.width) / NumCast(this.Document.height));
this._calendar?.updateSize();
})).observe(r);
this.renderCalendar();
}
}}>
<div className="calendarBox-wrapper" ref={r => (this._calendarRef = r)} />
</div>
);
}
}
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