@ux-aspects/ux-aspects
Version:
Open source user interface framework for building modern, responsive, mobile big data applications
86 lines • 14.6 kB
JavaScript
import { WeekDay } from '@angular/common';
import { inject, Injectable } from '@angular/core';
import { BehaviorSubject, combineLatest } from 'rxjs';
import { DateTimePickerService, ModeDirection } from '../date-time-picker.service';
import { compareDays, dateRange, gridify } from '../date-time-picker.utils';
import * as i0 from "@angular/core";
export class DayViewService {
constructor() {
this._datepicker = inject(DateTimePickerService);
this.grid$ = new BehaviorSubject([[]]);
this.focused$ = new BehaviorSubject(null);
this._subscription = combineLatest(this._datepicker.month$, this._datepicker.year$, this._datepicker.startOfWeek$)
.subscribe(([month, year]) => this.createDayGrid(month, year));
}
ngOnDestroy() {
this._subscription.unsubscribe();
}
setFocus(day, month, year) {
this.focused$.next({ day, month, year });
// update the date picker to show the required month and year
this._datepicker.setViewportMonth(month);
this._datepicker.setViewportYear(year);
}
createDayGrid(month, year) {
// update the header
this._datepicker.setHeader(this._datepicker.months[month] + ' ' + year);
// find the lower and upper boundaries
const start = new Date(year, month, 1);
const end = new Date(year, month + 1, 0);
// ensure the startOfWeek value is between 0-6 to prevent any infinite loop
const startOfWeek = Math.min(WeekDay.Saturday, Math.max(WeekDay.Sunday, this._datepicker.startOfWeek$.value));
// we always want to show from the specified start of week - this may include showing some dates from the previous month
while (start.getDay() !== startOfWeek) {
start.setDate(start.getDate() - 1);
}
// we also want to make sure that the range ends on a saturday
end.setDate(end.getDate() + (6 - end.getDay()));
// create an array of all the days to display
const dates = dateRange(start, end).map(date => ({
day: date.getDate(),
month: date.getMonth(),
year: date.getFullYear(),
date,
isToday: this.isToday(date),
isActive: this.isActive(date),
isCurrentMonth: date.getMonth() === month
}));
// turn the dates into a grid
const items = gridify(dates, 7);
this.grid$.next(items);
// if no item has yet been focused then focus the first day of the month
if ((this._datepicker.modeDirection === ModeDirection.None || this._datepicker.modeDirection === ModeDirection.Descend) && this.focused$.value === null) {
// check if the selected item is visible
const selectedDay = dates.find(day => day.isCurrentMonth && day.isActive);
if (selectedDay) {
this.setFocus(selectedDay.day, selectedDay.month, selectedDay.year);
}
else {
// find the first day of the month
const first = dates.find(date => date.day === 1);
// focus the date
this.setFocus(first.day, first.month, first.year);
}
}
}
/**
* Determine whether or not a specific date is today
* @param date The date to check
*/
isToday(date) {
return compareDays(new Date(), date);
}
/**
* Determines whether or not a specific date is the selected one
* @param date the date to check
*/
isActive(date) {
return this._datepicker.selected$.value ? compareDays(this._datepicker.selected$.value, date) : false;
}
static { this.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: "12.0.0", version: "18.2.12", ngImport: i0, type: DayViewService, deps: [], target: i0.ɵɵFactoryTarget.Injectable }); }
static { this.ɵprov = i0.ɵɵngDeclareInjectable({ minVersion: "12.0.0", version: "18.2.12", ngImport: i0, type: DayViewService }); }
}
i0.ɵɵngDeclareClassMetadata({ minVersion: "12.0.0", version: "18.2.12", ngImport: i0, type: DayViewService, decorators: [{
type: Injectable
}], ctorParameters: () => [] });
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{ WeekDay } from '@angular/common';\nimport { inject, Injectable, OnDestroy } from '@angular/core';\nimport { BehaviorSubject, combineLatest, Subscription } from 'rxjs';\nimport { DateTimePickerService, ModeDirection } from '../date-time-picker.service';\nimport { compareDays, dateRange, gridify } from '../date-time-picker.utils';\n\n@Injectable()\nexport class DayViewService implements OnDestroy {\n    private readonly _datepicker = inject(DateTimePickerService);\n\n    grid$ = new BehaviorSubject<DayViewItem[][]>([[]]);\n    focused$ = new BehaviorSubject<FocusedDayItem>(null);\n\n    private readonly _subscription: Subscription;\n\n    constructor() {\n        this._subscription = combineLatest(this._datepicker.month$, this._datepicker.year$, this._datepicker.startOfWeek$)\n            .subscribe(([month, year]) => this.createDayGrid(month, year));\n    }\n\n    ngOnDestroy(): void {\n        this._subscription.unsubscribe();\n    }\n\n    setFocus(day: number, month: number, year: number): void {\n\n        this.focused$.next({ day, month, year });\n\n        // update the date picker to show the required month and year\n        this._datepicker.setViewportMonth(month);\n        this._datepicker.setViewportYear(year);\n    }\n\n    private createDayGrid(month: number, year: number): void {\n\n        // update the header\n        this._datepicker.setHeader(this._datepicker.months[month] + ' ' + year);\n\n        // find the lower and upper boundaries\n        const start = new Date(year, month, 1);\n        const end = new Date(year, month + 1, 0);\n\n        // ensure the startOfWeek value is between 0-6 to prevent any infinite loop\n        const startOfWeek = Math.min(WeekDay.Saturday, Math.max(WeekDay.Sunday, this._datepicker.startOfWeek$.value));\n\n        // we always want to show from the specified start of week - this may include showing some dates from the previous month\n        while (start.getDay() !== startOfWeek) {\n            start.setDate(start.getDate() - 1);\n        }\n\n        // we also want to make sure that the range ends on a saturday\n        end.setDate(end.getDate() + (6 - end.getDay()));\n\n        // create an array of all the days to display\n        const dates: DayViewItem[] = dateRange(start, end).map(date => ({\n            day: date.getDate(),\n            month: date.getMonth(),\n            year: date.getFullYear(),\n            date,\n            isToday: this.isToday(date),\n            isActive: this.isActive(date),\n            isCurrentMonth: date.getMonth() === month\n        }));\n\n        // turn the dates into a grid\n        const items: DayViewItem[][] = gridify(dates, 7);\n\n        this.grid$.next(items);\n\n        // if no item has yet been focused then focus the first day of the month\n        if ((this._datepicker.modeDirection === ModeDirection.None || this._datepicker.modeDirection === ModeDirection.Descend) && this.focused$.value === null) {\n\n            // check if the selected item is visible\n            const selectedDay = dates.find(day => day.isCurrentMonth && day.isActive);\n\n            if (selectedDay) {\n                this.setFocus(selectedDay.day, selectedDay.month, selectedDay.year);\n            } else {\n\n                // find the first day of the month\n                const first = dates.find(date => date.day === 1);\n\n                // focus the date\n                this.setFocus(first.day, first.month, first.year);\n            }\n\n        }\n    }\n\n    /**\n     * Determine whether or not a specific date is today\n     * @param date The date to check\n     */\n    private isToday(date: Date): boolean {\n        return compareDays(new Date(), date);\n    }\n\n    /**\n     * Determines whether or not a specific date is the selected one\n     * @param date the date to check\n     */\n    private isActive(date: Date): boolean {\n        return this._datepicker.selected$.value ? compareDays(this._datepicker.selected$.value, date) : false;\n    }\n}\n\nexport interface DayViewItem {\n    day: number;\n    month: number;\n    year: number;\n    date: Date;\n    isToday: boolean;\n    isActive: boolean;\n    isCurrentMonth: boolean;\n}\n\nexport interface FocusedDayItem {\n    day: number;\n    month: number;\n    year: number;\n}"]}