@clr/angular
Version:
Angular components for Clarity
156 lines • 22.6 kB
JavaScript
/*
* Copyright (c) 2016-2023 VMware, Inc. All Rights Reserved.
* This software is released under MIT license.
* The full license information can be found in LICENSE in the root directory of this project.
*/
import { NO_OF_DAYS_IN_A_WEEK, NO_OF_ROWS_IN_CALENDAR_VIEW, TOTAL_DAYS_IN_DAYS_VIEW } from '../utils/constants';
import { getDay } from '../utils/date-utils';
import { DayViewModel } from './day-view.model';
import { DayModel } from './day.model';
export class CalendarViewModel {
constructor(calendar, selectedDay, focusableDay, today, firstDayOfWeek, excludedDates) {
this.calendar = calendar;
this.selectedDay = selectedDay;
this.focusableDay = focusableDay;
this.today = today;
this.firstDayOfWeek = firstDayOfWeek;
this.excludedDates = excludedDates;
this.currMonthDayViews = [];
this.initializeCalendarView();
}
/**
* DayViewModel matrix. Size 6x7
*/
get calendarView() {
return this._calendarView;
}
/**
* Updates the focusable day in the calendar.
*/
updateFocusableDay(day) {
this.setFocusableFlag(this.focusableDay, false);
this.setFocusableFlag(day, true);
this.focusableDay = day;
}
/**
* Generates a 6x7 matrix of DayViewModel based on the Calendar.
* The 6x7 matrix is structured according to the first day of the week.
* 6 rows to accommodate months which might have dates spanning over 6 weeks.
* 7 columns because there are 7 days in a week :P :D
*/
initializeCalendarView() {
// Generate prev and next month calendar models.
const prevMonthCalendar = this.calendar.previousMonth();
const nextMonthCalendar = this.calendar.nextMonth();
// Get no of days from prev and next months.
const daysFromPrevMonthInCalView = this.numDaysFromPrevMonthInCalView(this.calendar.year, this.calendar.month);
const daysFromNextMonthInCalView = TOTAL_DAYS_IN_DAYS_VIEW - (this.calendar.days.length + daysFromPrevMonthInCalView);
// Generate prev, curr and next day view models
let prevMonthDayViews = [];
let nextMonthDayViews = [];
if (daysFromPrevMonthInCalView > 0) {
prevMonthDayViews = this.generateDayViewModels(prevMonthCalendar.days.slice(-1 * daysFromPrevMonthInCalView), true, false);
}
this.currMonthDayViews = this.generateDayViewModels(this.calendar.days, false, true);
if (daysFromNextMonthInCalView > 0) {
nextMonthDayViews = this.generateDayViewModels(nextMonthCalendar.days.slice(0, daysFromNextMonthInCalView), true, false);
}
// Generate calendar view and initialize flags
this._calendarView = this.generateCalendarView(prevMonthDayViews, this.currMonthDayViews, nextMonthDayViews);
this.initializeSelectedDay();
this.initializeFocusableDay();
}
isDateExcluded(date) {
const { minDate, maxDate } = this.excludedDates;
const from = minDate.toComparisonString();
const to = maxDate.toComparisonString();
const today = date.toComparisonString();
return !(today >= from && today <= to);
}
/**
* Generates a DayViewModel array based on the DayModel passed
*/
generateDayViewModels(days, isExcluded, isCurrentCalendar) {
const dayViews = days.map(day => {
return new DayViewModel(day, false, isExcluded, this.isDateExcluded(day), false, false);
});
if (isCurrentCalendar && this.calendar.isDayInCalendar(this.today)) {
dayViews[this.today.date - 1].isTodaysDate = true;
}
return dayViews;
}
/**
* Gets the first day of the current month to figure out how many dates of previous month
* are needed to complete the Calendar View based on the first day of the week.
* eg: Assuming locale en-US, the first day of the week is Sunday,
* if first day of the current month lands on Wednesday, then
* (this.getDay function would return 3 since
* first day of the week is 0), we need the 3 days from the previous month.
*/
numDaysFromPrevMonthInCalView(currentYear, currentMonth) {
const firstDayOfCurrMonth = getDay(currentYear, currentMonth, 1);
if (firstDayOfCurrMonth >= this.firstDayOfWeek) {
return firstDayOfCurrMonth - this.firstDayOfWeek;
}
else {
return NO_OF_DAYS_IN_A_WEEK + firstDayOfCurrMonth - this.firstDayOfWeek;
}
}
/**
* Checks if the Day passed is in the CalendarView.
*/
isDayInCalendarView(day) {
if (!this.calendar.isDayInCalendar(day)) {
return false;
}
return true;
}
/**
* Using the DayViewModels from the previous, current and next month, this function
* generates the CalendarView.
*/
generateCalendarView(prev, curr, next) {
const combinationArr = [...prev, ...curr, ...next];
const calendarView = [];
for (let i = 0; i < NO_OF_ROWS_IN_CALENDAR_VIEW; i++) {
calendarView[i] = combinationArr.slice(i * NO_OF_DAYS_IN_A_WEEK, (i + 1) * NO_OF_DAYS_IN_A_WEEK);
}
return calendarView;
}
/**
* Initialize the selected day if the day is in the calendar.
*/
initializeSelectedDay() {
if (this.selectedDay && this.isDayInCalendarView(this.selectedDay)) {
this.currMonthDayViews[this.selectedDay.date - 1].isSelected = true;
}
}
/**
* Initializes the focusable day if the day is in the calendar. If focusable day is not set, then
* we check for the selected day. If selected day is not set then check if today is in the current
* calendar. If not then just set the 15th of the current calendar month.
*/
initializeFocusableDay() {
if (this.focusableDay && this.isDayInCalendarView(this.focusableDay)) {
this.setFocusableFlag(this.focusableDay, true);
}
else if (this.selectedDay && this.isDayInCalendarView(this.selectedDay)) {
this.setFocusableFlag(this.selectedDay, true);
this.focusableDay = this.selectedDay.clone();
}
else if (this.isDayInCalendarView(this.today)) {
this.setFocusableFlag(this.today, true);
this.focusableDay = this.today.clone();
}
else {
this.focusableDay = new DayModel(this.calendar.year, this.calendar.month, 15);
this.setFocusableFlag(this.focusableDay, true);
}
}
setFocusableFlag(day, flag) {
if (day) {
this.currMonthDayViews[day.date - 1].isFocusable = flag;
}
}
}
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All Rights Reserved.\n * This software is released under MIT license.\n * The full license information can be found in LICENSE in the root directory of this project.\n */\n\nimport { DateRange } from '../interfaces/date-range.interface';\nimport { NO_OF_DAYS_IN_A_WEEK, NO_OF_ROWS_IN_CALENDAR_VIEW, TOTAL_DAYS_IN_DAYS_VIEW } from '../utils/constants';\nimport { getDay } from '../utils/date-utils';\nimport { CalendarModel } from './calendar.model';\nimport { DayViewModel } from './day-view.model';\nimport { DayModel } from './day.model';\n\nexport class CalendarViewModel {\n  private currMonthDayViews: DayViewModel[] = [];\n  private _calendarView: DayViewModel[][];\n\n  constructor(\n    public calendar: CalendarModel,\n    private selectedDay: DayModel,\n    private focusableDay: DayModel,\n    private today: DayModel,\n    public firstDayOfWeek: number,\n    private excludedDates: DateRange\n  ) {\n    this.initializeCalendarView();\n  }\n\n  /**\n   * DayViewModel matrix. Size 6x7\n   */\n  get calendarView(): DayViewModel[][] {\n    return this._calendarView;\n  }\n\n  /**\n   * Updates the focusable day in the calendar.\n   */\n  updateFocusableDay(day: DayModel): void {\n    this.setFocusableFlag(this.focusableDay, false);\n    this.setFocusableFlag(day, true);\n    this.focusableDay = day;\n  }\n\n  /**\n   * Generates a 6x7 matrix of DayViewModel based on the Calendar.\n   * The 6x7 matrix is structured according to the first day of the week.\n   * 6 rows to accommodate months which might have dates spanning over 6 weeks.\n   * 7 columns because there are 7 days in a week :P :D\n   */\n  private initializeCalendarView(): void {\n    // Generate prev and next month calendar models.\n    const prevMonthCalendar: CalendarModel = this.calendar.previousMonth();\n    const nextMonthCalendar: CalendarModel = this.calendar.nextMonth();\n\n    // Get no of days from prev and next months.\n    const daysFromPrevMonthInCalView: number = this.numDaysFromPrevMonthInCalView(\n      this.calendar.year,\n      this.calendar.month\n    );\n    const daysFromNextMonthInCalView: number =\n      TOTAL_DAYS_IN_DAYS_VIEW - (this.calendar.days.length + daysFromPrevMonthInCalView);\n\n    // Generate prev, curr and next day view models\n    let prevMonthDayViews: DayViewModel[] = [];\n    let nextMonthDayViews: DayViewModel[] = [];\n\n    if (daysFromPrevMonthInCalView > 0) {\n      prevMonthDayViews = this.generateDayViewModels(\n        prevMonthCalendar.days.slice(-1 * daysFromPrevMonthInCalView),\n        true,\n        false\n      );\n    }\n\n    this.currMonthDayViews = this.generateDayViewModels(this.calendar.days, false, true);\n\n    if (daysFromNextMonthInCalView > 0) {\n      nextMonthDayViews = this.generateDayViewModels(\n        nextMonthCalendar.days.slice(0, daysFromNextMonthInCalView),\n        true,\n        false\n      );\n    }\n\n    // Generate calendar view and initialize flags\n    this._calendarView = this.generateCalendarView(prevMonthDayViews, this.currMonthDayViews, nextMonthDayViews);\n    this.initializeSelectedDay();\n    this.initializeFocusableDay();\n  }\n\n  private isDateExcluded(date: DayModel) {\n    const { minDate, maxDate }: DateRange = this.excludedDates;\n    const from = minDate.toComparisonString();\n    const to = maxDate.toComparisonString();\n    const today = date.toComparisonString();\n\n    return !(today >= from && today <= to);\n  }\n\n  /**\n   * Generates a DayViewModel array based on the DayModel passed\n   */\n  private generateDayViewModels(days: DayModel[], isExcluded: boolean, isCurrentCalendar: boolean): DayViewModel[] {\n    const dayViews: DayViewModel[] = days.map(day => {\n      return new DayViewModel(day, false, isExcluded, this.isDateExcluded(day), false, false);\n    });\n    if (isCurrentCalendar && this.calendar.isDayInCalendar(this.today)) {\n      dayViews[this.today.date - 1].isTodaysDate = true;\n    }\n    return dayViews;\n  }\n\n  /**\n   * Gets the first day of the current month to figure out how many dates of previous month\n   * are needed to complete the Calendar View based on the first day of the week.\n   * eg: Assuming locale en-US, the first day of the week is Sunday,\n   * if first day of the current month lands on Wednesday, then\n   * (this.getDay function would return 3 since\n   * first day of the week is 0), we need the 3 days from the previous month.\n   */\n  private numDaysFromPrevMonthInCalView(currentYear: number, currentMonth: number): number {\n    const firstDayOfCurrMonth: number = getDay(currentYear, currentMonth, 1);\n\n    if (firstDayOfCurrMonth >= this.firstDayOfWeek) {\n      return firstDayOfCurrMonth - this.firstDayOfWeek;\n    } else {\n      return NO_OF_DAYS_IN_A_WEEK + firstDayOfCurrMonth - this.firstDayOfWeek;\n    }\n  }\n\n  /**\n   * Checks if the Day passed is in the CalendarView.\n   */\n  private isDayInCalendarView(day: DayModel): boolean {\n    if (!this.calendar.isDayInCalendar(day)) {\n      return false;\n    }\n    return true;\n  }\n\n  /**\n   * Using the DayViewModels from the previous, current and next month, this function\n   * generates the CalendarView.\n   */\n  private generateCalendarView(prev: DayViewModel[], curr: DayViewModel[], next: DayViewModel[]): DayViewModel[][] {\n    const combinationArr: DayViewModel[] = [...prev, ...curr, ...next];\n\n    const calendarView: DayViewModel[][] = [];\n    for (let i = 0; i < NO_OF_ROWS_IN_CALENDAR_VIEW; i++) {\n      calendarView[i] = combinationArr.slice(i * NO_OF_DAYS_IN_A_WEEK, (i + 1) * NO_OF_DAYS_IN_A_WEEK);\n    }\n    return calendarView;\n  }\n\n  /**\n   * Initialize the selected day if the day is in the calendar.\n   */\n  private initializeSelectedDay(): void {\n    if (this.selectedDay && this.isDayInCalendarView(this.selectedDay)) {\n      this.currMonthDayViews[this.selectedDay.date - 1].isSelected = true;\n    }\n  }\n\n  /**\n   * Initializes the focusable day if the day is in the calendar. If focusable day is not set, then\n   * we check for the selected day. If selected day is not set then check if today is in the current\n   * calendar. If not then just set the 15th of the current calendar month.\n   */\n  private initializeFocusableDay(): void {\n    if (this.focusableDay && this.isDayInCalendarView(this.focusableDay)) {\n      this.setFocusableFlag(this.focusableDay, true);\n    } else if (this.selectedDay && this.isDayInCalendarView(this.selectedDay)) {\n      this.setFocusableFlag(this.selectedDay, true);\n      this.focusableDay = this.selectedDay.clone();\n    } else if (this.isDayInCalendarView(this.today)) {\n      this.setFocusableFlag(this.today, true);\n      this.focusableDay = this.today.clone();\n    } else {\n      this.focusableDay = new DayModel(this.calendar.year, this.calendar.month, 15);\n      this.setFocusableFlag(this.focusableDay, true);\n    }\n  }\n\n  private setFocusableFlag(day: DayModel, flag: boolean): void {\n    if (day) {\n      this.currMonthDayViews[day.date - 1].isFocusable = flag;\n    }\n  }\n}\n"]}