D-Net

import { Component, Input, Output, EventEmitter, OnChanges, SimpleChanges, ElementRef, ViewEncapsulation, ChangeDetectorRef, Renderer, forwardRef } from "@angular/core";

import { ControlValueAccessor, NG_VALUE_ACCESSOR } from "@angular/forms";

import { IMyDate, IMyDateRange, IMyMonth, IMyCalendarDay, IMyWeek, IMyDayLabels, IMyMonthLabels, IMyOptions, IMyDateModel, IMyInputAutoFill, IMyInputFieldChanged, IMyCalendarViewChanged, IMyInputFocusBlur } from "./interfaces/index";

import { LocaleService } from "./services/my-date-picker.locale.service";

import { UtilService } from "./services/my-date-picker.util.service";

// webpack1_

declare var require: any;

// declare var myDpStyles: string = require("./my-date-picker.component.css");

// declare var myDpTpl: string = require("./my-date-picker.component.html");

// webpack2_

export const MYDP_VALUE_ACCESSOR: any = {

    provide: NG_VALUE_ACCESSOR,

    useExisting: forwardRef(() => MyDatePicker),

    multi: true

};

@Component({

    selector: "my-date-picker",

    styleUrls: ['my-date-picker.component.css'],

    templateUrl: 'my-date-picker.component.html',

    providers: [LocaleService, UtilService, MYDP_VALUE_ACCESSOR],

    encapsulation: ViewEncapsulation.None

})

export class MyDatePicker implements OnChanges, ControlValueAccessor {

    @Input() options: any;

    @Input() locale: string;

    @Input() defaultMonth: string;

    @Input() selDate: string;

    @Input() placeholder: string;

    @Input() selector: number;

    @Output() dateChanged: EventEmitter<IMyDateModel> = new EventEmitter<IMyDateModel>();

    @Output() inputFieldChanged: EventEmitter<IMyInputFieldChanged> = new EventEmitter<IMyInputFieldChanged>();

    @Output() calendarViewChanged: EventEmitter<IMyCalendarViewChanged> = new EventEmitter<IMyCalendarViewChanged>();

    @Output() calendarToggle: EventEmitter<number> = new EventEmitter<number>();

    @Output() inputFocusBlur: EventEmitter<IMyInputFocusBlur> = new EventEmitter<IMyInputFocusBlur>();

    onChangeCb: (_: any) => void = () => { };

    onTouchedCb: () => void = () => { };

    showSelector: boolean = false;

    visibleMonth: IMyMonth = {monthTxt: "", monthNbr: 0, year: 0};

    selectedMonth: IMyMonth = {monthTxt: "", monthNbr: 0, year: 0};

    selectedDate: IMyDate = {year: 0, month: 0, day: 0};

    weekDays: Array<string> = [];

    dates: Array<IMyWeek> = [];

    selectionDayTxt: string = "";

    invalidDate: boolean = false;

    disableTodayBtn: boolean = false;

    dayIdx: number = 0;

    weekDayOpts: Array<string> = ["su", "mo", "tu", "we", "th", "fr", "sa"];

    autoFillOpts: IMyInputAutoFill = {separator: "", formatParts: [], enabled: true};

    editMonth: boolean = false;

    invalidMonth: boolean = false;

    editYear: boolean = false;

    invalidYear: boolean = false;

    prevMonthDisabled: boolean = false;

    nextMonthDisabled: boolean = false;

    prevYearDisabled: boolean = false;

    nextYearDisabled: boolean = false;

    PREV_MONTH: number = 1;

    CURR_MONTH: number = 2;

    NEXT_MONTH: number = 3;

    MIN_YEAR: number = 1000;

    MAX_YEAR: number = 9999;

    // Default options

    opts: IMyOptions = {

        dayLabels: <IMyDayLabels> {},

        monthLabels: <IMyMonthLabels> {},

        dateFormat: <string> "",

        showTodayBtn: <boolean> true,

        todayBtnTxt: <string> "",

        firstDayOfWeek: <string> "",

        sunHighlight: <boolean> true,

        markCurrentDay: <boolean> true,

        disableUntil: <IMyDate> {year: 0, month: 0, day: 0},

        disableSince: <IMyDate> {year: 0, month: 0, day: 0},

        disableDays: <Array<IMyDate>> [],

        enableDays: <Array<IMyDate>> [],

        disableDateRange: <IMyDateRange> {begin: <IMyDate> {year: 0, month: 0, day: 0}, end: <IMyDate> {year: 0, month: 0, day: 0}},

        disableWeekends: <boolean> false,

        showWeekNumbers: <boolean> false,

        height: <string> "34px",

        width: <string> "100%",

        selectionTxtFontSize: <string> "18px",

        inline: <boolean> false,

        showClearDateBtn: <boolean> true,

        alignSelectorRight: <boolean> false,

        openSelectorTopOfInput: <boolean> false,

        indicateInvalidDate: <boolean> true,

        editableDateField: <boolean> true,

        editableMonthAndYear: <boolean> true,

        disableHeaderButtons: <boolean> true,

        minYear: <number> this.MIN_YEAR,

        maxYear: <number> this.MAX_YEAR,

        componentDisabled: <boolean> false,

        inputValueRequired: <boolean> false,

        showSelectorArrow: <boolean> true,

        showInputField: <boolean> true,

        openSelectorOnInputClick: <boolean> false,

        inputAutoFill: <boolean> true,

        ariaLabelInputField: <string> "Date input field",

        ariaLabelClearDate: <string> "Clear Date",

        ariaLabelOpenCalendar: <string> "Open Calendar",

        ariaLabelPrevMonth: <string> "Previous Month",

        ariaLabelNextMonth: <string> "Next Month",

        ariaLabelPrevYear: <string> "Previous Year",

        ariaLabelNextYear: <string> "Next Year"

    };

    constructor(public elem: ElementRef, private renderer: Renderer, private cdr: ChangeDetectorRef, private localeService: LocaleService, private utilService: UtilService) {

        this.setLocaleOptions();

        renderer.listenGlobal("document", "click", (event: any) => {

            if (this.showSelector && event.target && this.elem.nativeElement !== event.target && !this.elem.nativeElement.contains(event.target)) {

                this.showSelector = false;

                this.calendarToggle.emit(4);

            }

            if (this.opts.editableMonthAndYear && event.target && this.elem.nativeElement.contains(event.target)) {

                this.resetMonthYearEdit();

            }

        });

    }

    setLocaleOptions(): void {

        let opts: IMyOptions = this.localeService.getLocaleOptions(this.locale);

        Object.keys(opts).forEach((k) => {

            (<IMyOptions>this.opts)[k] = opts[k];

        });

    }

    setOptions(): void {

        if (this.options !== undefined) {

            Object.keys(this.options).forEach((k) => {

                (<IMyOptions>this.opts)[k] = this.options[k];

            });

        }

        if (this.opts.minYear < this.MIN_YEAR) {

            this.opts.minYear = this.MIN_YEAR;

        }

        if (this.opts.maxYear > this.MAX_YEAR) {

            this.opts.maxYear = this.MAX_YEAR;

        }

        let separator: string = this.utilService.getDateFormatSeparator(this.opts.dateFormat);

        this.autoFillOpts = {separator: separator, formatParts: this.opts.dateFormat.split(separator), enabled: this.opts.inputAutoFill};

    }

    getComponentWidth(): string {

        if (this.opts.showInputField) {

            return this.opts.width;

        }

        else if (this.selectionDayTxt.length > 0 && this.opts.showClearDateBtn) {

            return "60px";

        }

        else {

            return "30px";

        }

    }

    getSelectorTopPosition(): string {

        if (this.opts.openSelectorTopOfInput) {

            return this.elem.nativeElement.children[0].offsetHeight + "px";

        }

    }

    resetMonthYearEdit(): void {

        this.editMonth = false;

        this.editYear = false;

        this.invalidMonth = false;

        this.invalidYear = false;

    }

    editMonthClicked(event: any): void {

        event.stopPropagation();

        if (this.opts.editableMonthAndYear) {

            this.editMonth = true;

        }

    }

    editYearClicked(event: any): void {

        event.stopPropagation();

        if (this.opts.editableMonthAndYear) {

            this.editYear = true;

        }

    }

    userDateInput(event: any): void {

        this.invalidDate = false;

        if (event.target.value.length === 0) {

            this.clearDate();

        }

        else {

            let date: IMyDate = this.utilService.isDateValid(event.target.value, this.opts.dateFormat, this.opts.minYear, this.opts.maxYear, this.opts.disableUntil, this.opts.disableSince, this.opts.disableWeekends, this.opts.disableDays, this.opts.disableDateRange, this.opts.monthLabels, this.opts.enableDays);

            if (date.day !== 0 && date.month !== 0 && date.year !== 0) {

                this.selectDate(date);

            }

            else {

                this.invalidDate = true;

            }

        }

        if (this.invalidDate) {

            this.inputFieldChanged.emit({value: event.target.value, dateFormat: this.opts.dateFormat, valid: !(event.target.value.length === 0 || this.invalidDate)});

            this.onChangeCb("");

            this.onTouchedCb();

        }

    }

    onFocusInput(event: any): void {

        this.inputFocusBlur.emit({reason: 1, value: event.target.value});

    }

    lostFocusInput(event: any): void {

        this.selectionDayTxt = event.target.value;

        this.onTouchedCb();

        this.inputFocusBlur.emit({reason: 2, value: event.target.value});

    }

    userMonthInput(event: any): void {

        if (event.keyCode === 13 || event.keyCode === 37 || event.keyCode === 39) {

            return;

        }

        this.invalidMonth = false;

        let m: number = this.utilService.isMonthLabelValid(event.target.value, this.opts.monthLabels);

        if (m !== -1) {

            this.editMonth = false;

            if (m !== this.visibleMonth.monthNbr) {

                this.visibleMonth = {monthTxt: this.monthText(m), monthNbr: m, year: this.visibleMonth.year};

                this.generateCalendar(m, this.visibleMonth.year, true);

            }

        }

        else {

            this.invalidMonth = true;

        }

    }

    userYearInput(event: any): void {

        if (event.keyCode === 13 || event.keyCode === 37 || event.keyCode === 39) {

            return;

        }

        this.invalidYear = false;

        let y: number = this.utilService.isYearLabelValid(Number(event.target.value), this.opts.minYear, this.opts.maxYear);

        if (y !== -1) {

            this.editYear = false;

            if (y !== this.visibleMonth.year) {

                this.visibleMonth = {monthTxt: this.visibleMonth.monthTxt, monthNbr: this.visibleMonth.monthNbr, year: y};

                this.generateCalendar(this.visibleMonth.monthNbr, y, true);

            }

        }

        else {

            this.invalidYear = true;

        }

    }

    isTodayDisabled(): void {

        this.disableTodayBtn = this.utilService.isDisabledDay(this.getToday(), this.opts.disableUntil, this.opts.disableSince, this.opts.disableWeekends, this.opts.disableDays, this.opts.disableDateRange, this.opts.enableDays);

    }

    parseOptions(): void {

        if (this.locale) {

            this.setLocaleOptions();

        }

        this.setOptions();

        this.isTodayDisabled();

        this.dayIdx = this.weekDayOpts.indexOf(this.opts.firstDayOfWeek);

        if (this.dayIdx !== -1) {

            let idx: number = this.dayIdx;

            for (let i = 0; i < this.weekDayOpts.length; i++) {

                this.weekDays.push(this.opts.dayLabels[this.weekDayOpts[idx]]);

                idx = this.weekDayOpts[idx] === "sa" ? 0 : idx + 1;

            }

        }

    }

    writeValue(value: Object): void {

        if (value && value["date"]) {

            this.updateDateValue(this.parseSelectedDate(value["date"]), false);

        }

        else if (value === "") {

            this.updateDateValue({year: 0, month: 0, day: 0}, true);

        }

    }

    registerOnChange(fn: any): void {

        this.onChangeCb = fn;

    }

    registerOnTouched(fn: any): void {

        this.onTouchedCb = fn;

    }

    ngOnChanges(changes: SimpleChanges): void {

        if (changes.hasOwnProperty("selector") && changes["selector"].currentValue > 0) {

            this.openBtnClicked();

        }

        if (changes.hasOwnProperty("placeholder")) {

            this.placeholder = changes["placeholder"].currentValue;

        }

        if (changes.hasOwnProperty("locale")) {

            this.locale = changes["locale"].currentValue;

        }

        if (changes.hasOwnProperty("options")) {

            this.options = changes["options"].currentValue;

        }

        this.weekDays.length = 0;

        this.parseOptions();

        if (changes.hasOwnProperty("defaultMonth")) {

            let dm: string = changes["defaultMonth"].currentValue;

            if (dm !== null && dm !== undefined && dm !== "") {

                this.selectedMonth = this.parseSelectedMonth(dm);

            }

            else {

                this.selectedMonth = {monthTxt: "", monthNbr: 0, year: 0};

            }

        }

        if (changes.hasOwnProperty("selDate")) {

            let sd: any = changes["selDate"];

            if (sd.currentValue !== null && sd.currentValue !== undefined && sd.currentValue !== "" && Object.keys(sd.currentValue).length !== 0) {

                this.selectedDate = this.parseSelectedDate(sd.currentValue);

                setTimeout(() => {

                    this.onChangeCb(this.getDateModel(this.selectedDate));

                });

            }

            else {

                // Do not clear on init

                if (!sd.isFirstChange()) {

                    this.clearDate();

                }

            }

        }

        if (this.opts.inline) {

            this.setVisibleMonth();

        }

        else if (this.showSelector) {

            this.generateCalendar(this.visibleMonth.monthNbr, this.visibleMonth.year, false);

        }

    }

    removeBtnClicked(): void {

        // Remove date button clicked

        this.clearDate();

        if (this.showSelector) {

            this.calendarToggle.emit(3);

        }

        this.showSelector = false;

    }

    openBtnClicked(): void {

        // Open selector button clicked

        this.showSelector = !this.showSelector;

        if (this.showSelector) {

            this.setVisibleMonth();

            this.calendarToggle.emit(1);

        }

        else {

            this.calendarToggle.emit(3);

        }

    }

    setVisibleMonth(): void {

        // Sets visible month of calendar

        let y: number = 0, m: number = 0;

        if (!this.utilService.isInitializedDate(this.selectedDate)) {

            if (this.selectedMonth.year === 0 && this.selectedMonth.monthNbr === 0) {

                let today: IMyDate = this.getToday();

                y = today.year;

                m = today.month;

            } else {

                y = this.selectedMonth.year;

                m = this.selectedMonth.monthNbr;

            }

        }

        else {

            y = this.selectedDate.year;

            m = this.selectedDate.month;

        }

        this.visibleMonth = {monthTxt: this.opts.monthLabels[m], monthNbr: m, year: y};

        // Create current month

        this.generateCalendar(m, y, true);

    }

    prevMonth(): void {

        // Previous month from calendar

        let d: Date = this.getDate(this.visibleMonth.year, this.visibleMonth.monthNbr, 1);

        d.setMonth(d.getMonth() - 1);

        let y: number = d.getFullYear();

        let m: number = d.getMonth() + 1;

        this.visibleMonth = {monthTxt: this.monthText(m), monthNbr: m, year: y};

        this.generateCalendar(m, y, true);

    }

    nextMonth(): void {

        // Next month from calendar

        let d: Date = this.getDate(this.visibleMonth.year, this.visibleMonth.monthNbr, 1);

        d.setMonth(d.getMonth() + 1);

        let y: number = d.getFullYear();

        let m: number = d.getMonth() + 1;

        this.visibleMonth = {monthTxt: this.monthText(m), monthNbr: m, year: y};

        this.generateCalendar(m, y, true);

    }

    prevYear(): void {

        // Previous year from calendar

        this.visibleMonth.year--;

        this.generateCalendar(this.visibleMonth.monthNbr, this.visibleMonth.year, true);

    }

    nextYear(): void {

        // Next year from calendar

        this.visibleMonth.year++;

        this.generateCalendar(this.visibleMonth.monthNbr, this.visibleMonth.year, true);

    }

    todayClicked(): void {

        // Today button clicked

        let today: IMyDate = this.getToday();

        this.selectDate(today);

        if (this.opts.inline && today.year !== this.visibleMonth.year || today.month !== this.visibleMonth.monthNbr) {

            this.visibleMonth = {monthTxt: this.opts.monthLabels[today.month], monthNbr: today.month, year: today.year};

            this.generateCalendar(today.month, today.year, true);

        }

    }

    cellClicked(cell: any): void {

        // Cell clicked on the calendar

        if (cell.cmo === this.PREV_MONTH) {

            // Previous month day

            this.prevMonth();

        }

        else if (cell.cmo === this.CURR_MONTH) {

            // Current month day - if date is already selected clear it

            if (cell.dateObj.year === this.selectedDate.year && cell.dateObj.month === this.selectedDate.month && cell.dateObj.day === this.selectedDate.day) {

                this.clearDate();

            }

            else {

                this.selectDate(cell.dateObj);

            }

        }

        else if (cell.cmo === this.NEXT_MONTH) {

            // Next month day

            this.nextMonth();

        }

        this.resetMonthYearEdit();

    }

    cellKeyDown(event: any, cell: any) {

        // Cell keyboard handling

        if ((event.keyCode === 13 || event.keyCode === 32) && !cell.disabled) {

            event.preventDefault();

            this.cellClicked(cell);

        }

    }

    clearDate(): void {

        // Clears the date and notifies parent using callbacks and value accessor

        let date: IMyDate = {year: 0, month: 0, day: 0};

        this.dateChanged.emit({date: date, jsdate: null, formatted: "", epoc: 0});

        this.onChangeCb("");

        this.onTouchedCb();

        this.updateDateValue(date, true);

    }

    selectDate(date: IMyDate): void {

        // Date selected, notifies parent using callbacks and value accessor

        let dateModel: IMyDateModel = this.getDateModel(date);

        this.dateChanged.emit(dateModel);

        this.onChangeCb(dateModel);

        this.onTouchedCb();

        this.updateDateValue(date, false);

        if (this.showSelector) {

            this.calendarToggle.emit(2);

        }

        this.showSelector = false;

    }

    updateDateValue(date: IMyDate, clear: boolean): void {

        // Updates date values

        this.selectedDate = date;

        this.selectionDayTxt = clear ? "" : this.formatDate(date);

        this.inputFieldChanged.emit({value: this.selectionDayTxt, dateFormat: this.opts.dateFormat, valid: !clear});

        this.invalidDate = false;

    }

    getDateModel(date: IMyDate): IMyDateModel {

        // Creates a date model object from the given parameter

        return {date: date, jsdate: this.getDate(date.year, date.month, date.day), formatted: this.formatDate(date), epoc: Math.round(this.getTimeInMilliseconds(date) / 1000.0)};

    }

    preZero(val: string): string {

        // Prepend zero if smaller than 10

        return parseInt(val) < 10 ? "0" + val : val;

    }

    formatDate(val: any): string {

        // Returns formatted date string, if mmm is part of dateFormat returns month as a string

        let formatted: string = this.opts.dateFormat.replace("yyyy", val.year).replace("dd", this.preZero(val.day));

        return this.opts.dateFormat.indexOf("mmm") !== -1 ? formatted.replace("mmm", this.monthText(val.month)) : formatted.replace("mm", this.preZero(val.month));

    }

    monthText(m: number): string {

        // Returns month as a text

        return this.opts.monthLabels[m];

    }

    monthStartIdx(y: number, m: number): number {

        // Month start index

        let d = new Date();

        d.setDate(1);

        d.setMonth(m - 1);

        d.setFullYear(y);

        let idx = d.getDay() + this.sundayIdx();

        return idx >= 7 ? idx - 7 : idx;

    }

    daysInMonth(m: number, y: number): number {

        // Return number of days of current month

        return new Date(y, m, 0).getDate();

    }

    daysInPrevMonth(m: number, y: number): number {

        // Return number of days of the previous month

        let d: Date = this.getDate(y, m, 1);

        d.setMonth(d.getMonth() - 1);

        return this.daysInMonth(d.getMonth() + 1, d.getFullYear());

    }

    isCurrDay(d: number, m: number, y: number, cmo: number, today: IMyDate): boolean {

        // Check is a given date the today

        return d === today.day && m === today.month && y === today.year && cmo === this.CURR_MONTH;

    }

    getToday(): IMyDate {

        let date: Date = new Date();

        return {year: date.getFullYear(), month: date.getMonth() + 1, day: date.getDate()};

    }

    getTimeInMilliseconds(date: IMyDate): number {

        return this.getDate(date.year, date.month, date.day).getTime();

    }

    getDayNumber(date: IMyDate): number {

        // Get day number: su=0, mo=1, tu=2, we=3 ...

        let d: Date = this.getDate(date.year, date.month, date.day);

        return d.getDay();

    }

    getWeekday(date: IMyDate): string {

        // Get weekday: su, mo, tu, we ...

        return this.weekDayOpts[this.getDayNumber(date)];

    }

    getDate(year: number, month: number, day: number): Date {

        // Creates a date object from given year, month and day

        return new Date(year, month - 1, day, 0, 0, 0, 0);

    }

    sundayIdx(): number {

        // Index of Sunday day

        return this.dayIdx > 0 ? 7 - this.dayIdx : 0;

    }

    generateCalendar(m: number, y: number, notifyChange: boolean): void {

        this.dates.length = 0;

        let today: IMyDate = this.getToday();

        let monthStart: number = this.monthStartIdx(y, m);

        let dInThisM: number = this.daysInMonth(m, y);

        let dInPrevM: number = this.daysInPrevMonth(m, y);

        let dayNbr: number = 1;

        let cmo: number = this.PREV_MONTH;

        for (let i = 1; i < 7; i++) {

            let week: Array<IMyCalendarDay> = [];

            if (i === 1) {

                // First week

                let pm = dInPrevM - monthStart + 1;

                // Previous month

                for (let j = pm; j <= dInPrevM; j++) {

                    let date: IMyDate = {year: y, month: m - 1, day: j};

                    week.push({dateObj: date, cmo: cmo, currDay: this.isCurrDay(j, m, y, cmo, today), dayNbr: this.getDayNumber(date), disabled: this.utilService.isDisabledDay(date, this.opts.disableUntil, this.opts.disableSince, this.opts.disableWeekends, this.opts.disableDays, this.opts.disableDateRange, this.opts.enableDays)});

                }

                cmo = this.CURR_MONTH;

                // Current month

                let daysLeft: number = 7 - week.length;

                for (let j = 0; j < daysLeft; j++) {

                    let date: IMyDate = {year: y, month: m, day: dayNbr};

                    week.push({dateObj: date, cmo: cmo, currDay: this.isCurrDay(dayNbr, m, y, cmo, today), dayNbr: this.getDayNumber(date), disabled: this.utilService.isDisabledDay(date, this.opts.disableUntil, this.opts.disableSince, this.opts.disableWeekends, this.opts.disableDays, this.opts.disableDateRange, this.opts.enableDays)});

                    dayNbr++;

                }

            }

            else {

                // Rest of the weeks

                for (let j = 1; j < 8; j++) {

                    if (dayNbr > dInThisM) {

                        // Next month

                        dayNbr = 1;

                        cmo = this.NEXT_MONTH;

                    }

                    let date: IMyDate = {year: y, month: cmo === this.CURR_MONTH ? m : m + 1, day: dayNbr};

                    week.push({dateObj: date, cmo: cmo, currDay: this.isCurrDay(dayNbr, m, y, cmo, today), dayNbr: this.getDayNumber(date), disabled: this.utilService.isDisabledDay(date, this.opts.disableUntil, this.opts.disableSince, this.opts.disableWeekends, this.opts.disableDays, this.opts.disableDateRange, this.opts.enableDays)});

                    dayNbr++;

                }

            }

            let weekNbr: number = this.opts.showWeekNumbers  && this.opts.firstDayOfWeek === "mo" ? this.utilService.getWeekNumber(week[0].dateObj) : 0;

            this.dates.push({week: week, weekNbr: weekNbr});

        }

        this.setHeaderBtnDisabledState(m, y);

        if (notifyChange) {

            // Notify parent

            this.calendarViewChanged.emit({year: y, month: m, first: {number: 1, weekday: this.getWeekday({year: y, month: m, day: 1})}, last: {number: dInThisM, weekday: this.getWeekday({year: y, month: m, day: dInThisM})}});