mydatepicker

Angular 2 date picker - Angular2 reusable UI component

Description

Highly configurable Angular2 date picker. Online demo is here

If you want to set own styles to the input box, the calendar and the clear buttons you can try this attribute directive datepicker.

Installation

To install this component to an external project, follow the procedure:

1. npm install mydatepicker --save

2. Add MyDatePickerModule import to your @NgModule like example below

   import { NgModule } from '@angular/core';
   import { BrowserModule } from '@angular/platform-browser';
   import { MyTestApp } from './my-test-app';
   import { MyDatePickerModule } from 'mydatepicker';
   
   @NgModule({
       imports:      [ BrowserModule, MyDatePickerModule ],
       declarations: [ MyTestApp ],
       bootstrap:    [ MyTestApp ]
   })
   export class MyTestAppModule {}

3. If you are using systemjs package loader add the following mydatepicker properties to the System.config:

   (function (global) {
       System.config({
           paths: {
               'npm:': 'node_modules/'
           },
           map: {
               // Other components are here...
   
               'mydatepicker': 'npm:mydatepicker/bundles/mydatepicker.umd.js'
           },
           packages: {
           }
       });
   })(this);

Usage

Use one of the following three options.

1. Callbacks

In this option the mydatepicker sends data back to host application using callbacks. Here is an example application. It shows how to use callbacks.

To use callbacks define the application class as follows:

import {IMyOptions, IMyDateModel} from 'mydatepicker';
// other imports here...

export class MyTestApp {

    private myDatePickerOptions: IMyOptions = {
        // other options...
        dateFormat: 'dd.mm.yyyy',
    };

    constructor() { }

    // dateChanged callback function called when the user select the date. This is mandatory callback
    // in this option. There are also optional inputFieldChanged and calendarViewChanged callbacks.
    onDateChanged(event: IMyDateModel) {
        // event properties are: event.date, event.jsdate, event.formatted and event.epoc
    }
}

Add the following snippet inside your template:

<my-date-picker [options]="myDatePickerOptions"
                (dateChanged)="onDateChanged($event)"></my-date-picker>

2. Reactive forms

In this option the value accessor of reactive forms is used. Here is an example application. It shows how to use the formControlName.

To use reactive forms define the application class as follows:

import {IMyOptions} from 'mydatepicker';
// other imports here...

export class MyTestApp implements OnInit {

    private myDatePickerOptions: IMyOptions = {
        // other options...
        dateFormat: 'dd.mm.yyyy',
    };

    private myForm: FormGroup;

    constructor(private formBuilder: FormBuilder) { }

    ngOnInit() {
        this.myForm = this.formBuilder.group({
            // Empty string means no initial value. Can be also specific date for
            // example: {date: {year: 2018, month: 10, day: 9}} which sets this date to initial
            // value.

            myDate: ['', Validators.required]
            // other controls are here...
        });
    }

    setDate(): void {
        // Set today date using the setValue function
        let date = new Date();
        this.myForm.setValue({myDate: {
        date: {
            year: date.getFullYear(),
            month: date.getMonth() + 1,
            day: date.getDate()}
        }});
    }

    clearDate(): void {
        // Clear the date using the setValue function
        this.myForm.setValue({myDate: ''});
    }
}

Add the following snippet inside your template:

<form [formGroup]="myForm" novalidate>
    <my-date-picker name="mydate" [options]="myDatePickerOptions"
                    formControlName="myDate"></my-date-picker>
  <!-- other controls are here... -->
</form>

3. ngModel binding

In this option the ngModel binding is used. Here is an example application. It shows how to use the ngModel.

To use ngModel define the application class as follows:

import {IMyOptions} from 'mydatepicker';
// other imports here...

export class MyTestApp {

    private myDatePickerOptions: IMyOptions = {
        // other options...
        dateFormat: 'dd.mm.yyyy',
    };

    // Initialized to specific date (09.10.2018).
    private model: Object = { date: { year: 2018, month: 10, day: 9 } };

    constructor() { }
}

Add the following snippet inside your template:

<form #myForm="ngForm" novalidate>
    <my-date-picker name="mydate" [options]="myDatePickerOptions"
                    [(ngModel)]="model" required></my-date-picker>
</form>

Attributes

options attribute

Value of the options attribute is a type of IMyOptions. It can contain the following properties.

Option	Default	Type	Description
dayLabels	{su: 'Sun', mo: 'Mon', tu: 'Tue', we: 'Wed', th: 'Thu', fr: 'Fri', sa: 'Sat'}	IMyDayLabels	Day labels visible on the selector.
monthLabels	{ 1: 'Jan', 2: 'Feb', 3: 'Mar', 4: 'Apr', 5: 'May', 6: 'Jun', 7: 'Jul', 8: 'Aug', 9: 'Sep', 10: 'Oct', 11: 'Nov', 12: 'Dec' }	IMyMonthLabels	Month labels visible on the selector.
dateFormat	yyyy-mm-dd	string	Date format on the selection area and the callback. For example: dd.mm.yyyy, yyyy-mm-dd, dd mmm yyyy (mmm = Month as a text)
showTodayBtn	true	boolean	Show 'Today' button on calendar.
todayBtnTxt	Today	string	Today button text. Can be used if showTodayBtn = true.
firstDayOfWeek	mo	string	First day of week on calendar. One of the following: mo, tu, we, th, fr, sa, su
sunHighlight	true	boolean	Sunday red colored on calendar.
markCurrentDay	true	boolean	Is current day (today) marked on calendar.
editableMonthAndYear	true	boolean	Is month and year labels editable or not.
minYear	1000	number	Minimum allowed year in calendar. Cannot be less than 1000.
maxYear	9999	number	Maximum allowed year in calendar. Cannot be more than 9999.
disableUntil	no default value	IMyDate	Disable dates backward starting from the given date. For example: {year: 2016, month: 6, day: 26}
disableSince	no default value	IMyDate	Disable dates forward starting from the given date. For example: {year: 2016, month: 7, day: 22}
disableDays	no default value	Array<IMyDate>	Disable single dates one by one. Array of disabled dates. For example: [{year: 2016, month: 11, day: 14}, {year: 2016, month: 1, day: 15}]
enableDays	no default value	Array<IMyDate>	Enable given dates one by one if the date is disabled. For example if you disable the date range and want to enable some dates in range. Array of enabled days. For example: [{year: 2016, month: 11, day: 14}, {year: 2016, month: 1, day: 15}]
disableDateRange	no default value	IMyDateRange	Disable a date range from begin to end. For example: {begin: {year: 2016, month: 11, day: 14}, end: {year: 2016, month: 11, day: 20}
disableWeekends	false	boolean	Disable weekends (Saturday and Sunday).
disableHeaderButtons	true	boolean	Prevent to change the calendar view with header buttons if previous or next month are fully disabled by disableUntil or disableSince.
showWeekNumbers	false	boolean	Are week numbers visible or not on calendar. Can be used if firstDayOfWeek = mo.
inline	false	boolean	Show mydatepicker in inline mode.
showClearDateBtn	true	boolean	Is clear date button shown or not. Can be used if inline = false.
height	34px	string	mydatepicker height in without selector. Can be used if inline = false.
width	100%	string	mydatepicker width. Can be used if inline = false.
selectionTxtFontSize	18px	string	Selection area font size. Can be used if inline = false.
alignSelectorRight	false	boolean	Align selector right. Can be used if inline = false.
openSelectorTopOfInput	false	boolean	Open selector top of input field. The selector arrow cannot be shown if this option is true. Can be used if inline = false.
indicateInvalidDate	true	boolean	If user typed date is not same format as dateFormat, show red background in the selection area. Can be used if inline = false.
componentDisabled	false	boolean	Is selection area input field and buttons disabled or not (input disabled flag). Can be used if inline = false.
editableDateField	true	boolean	Is selection area input field editable or not (input readonly flag). Can be used if inline = false.
inputValueRequired	false	boolean	Is selection area input field value required or not (input required flag). Can be used if inline = false.
showSelectorArrow	true	boolean	Is selector (calendar) arrow shown or not. Can be used if inline = false.
showInputField	true	boolean	Is selection area input field shown or not. If not, just show the icon. Can be used if inline = false.
openSelectorOnInputClick	false	boolean	Open selector when the input field is clicked. Can be used if inline = false and editableDateField = false.
inputAutoFill	true	boolean	Is auto fill used or not when typing to the input box. Can be used if inline = false.
ariaLabelInputField	Date input field	string	Aria label text of input field.
ariaLabelClearDate	Clear Date	string	Aria label text of clear date button.
ariaLabelOpenCalendar	Open Calendar	string	Aria label text of open calendar button.
ariaLabelPrevMonth	Previous Month	string	Aria label text of previous month button.
ariaLabelNextMonth	Next Month	string	Aria label text of next month button.
ariaLabelPrevYear	Previous Year	string	Aria label text of previous year button.
ariaLabelNextYear	Next Year	string	Aria label text of next year button.

• Example of the options data (not all properties listed):

  myDatePickerOptions: IMyOptions = {
      todayBtnTxt: 'Today',
      dateFormat: 'yyyy-mm-dd',
      firstDayOfWeek: 'mo',
      sunHighlight: true,
      height: '34px',
      width: '260px',
      inline: false,
      disableUntil: {year: 2016, month: 8, day: 10},
      selectionTxtFontSize: '16px'
  };

locale attribute

An ISO 639-1 language code can be provided as shorthand for the following options (dayLabels, monthLabels, dateFormat, todayBtnTxt, firstDayOfWeek and sunHighlight). Currently supported languages: en, fr, ja, fi, es, hu, sv, nl, ru, uk, no, tr, pt-br, de, it, it-ch, pl, my, sk, sl, zh-cn, he, ro, ca, id, en-au, am-et and cs.

The locale options can be override by options attribute.

• new locale data can be added to this file. If you want to add a new locale create a pull request.
• locales can be tested here

selDate attribute

Provide the initially chosen date that will display both in the text input field and provide the default for the popped-up selector.

Type of the selDate attribute can be a string or an IMyDate object.

• the string must be in the same format as the dateFormat option is. For example '2016-06-26'
• the object must be in the IMyDate format. For example: {year: 2016, month: 6, day: 26}

Here is an example on how to use this attribute.

defaultMonth attribute

If selDate is not specified, when the datepicker is opened, it will ordinarily default to selecting the current date. If you would prefer a different year and month to be the default for a freshly chosen date picking operation, specify a [defaultMonth] attribute.

Value of the [defaultMonth] attribute is a string which contain year number and month number separated by delimiter. The delimiter can be any special character. For example the value of the [defaultMonth] attribute can be: 2016.08, 08-2016, 08/2016.

Here is an example on how to use this attribute.

placeholder attribute

Placeholder text in the input field. Here is an example on how to use this attribute.

selector attribute

Selector can be opened or closed using this attribute. Here is an example on how to use this attribute.

Callbacks

dateChanged callback

• called when the date is selected, removed or input field typing is valid

• event parameter:

  • event.date: Date object in the following format: { day: 22, month: 11, year: 2016 }
  • event.jsdate: Javascript Date object
  • event.formatted: Date string in the same format as dateFormat option is: '2016-11-22'
  • event.epoc: Epoc time stamp number: 1479765600

• event parameter type is IMyDateModel

• Example of the dateChanged callback:

onDateChanged(event: IMyDateModel) {
  console.log('onDateChanged(): ', event.date, ' - jsdate: ', new Date(event.jsdate).toLocaleDateString(), ' - formatted: ', event.formatted, ' - epoc timestamp: ', event.epoc);
}

inputFieldChanged callback

• called when the value change in the input field, date is selected or date is cleared (can be used in validation, returns true or false indicating is date valid or not in the input field)

• event parameter:

  • event.value: Value of the input field. For example: '2016-11-22'
  • event.dateFormat: Date format string in the same format as dateFormat option is. For example: 'yyyy-mm-dd'
  • event.valid: Boolean value indicating is the input field value valid or not. For example: true

• event parameter type is IMyInputFieldChanged

• Example of the input field changed callback:

onInputFieldChanged(event: IMyInputFieldChanged) {
  console.log('onInputFieldChanged(): Value: ', event.value, ' - dateFormat: ', event.dateFormat, ' - valid: ', event.valid);
}

calendarViewChanged callback

• called when the calendar view change (year or month change)

• event parameter:

  • event.year: Year number in calendar. For example: 2016
  • event.month: Month number in calendar. For example: 11
  • event.first: First day of selected month and year. Type of IMyWeekday. For example: {number: 1, weekday: "tu"}
  • event.last: Last day of selected month and year. Type of IMyWeekday. For example: {number: 30, weekday: "we"}

• event parameter type is IMyCalendarViewChanged

• values of the weekday property are same as values of the firstDayOfWeek option

• Example of the calendar view changed callback:

onCalendarViewChanged(event: IMyCalendarViewChanged) {
  console.log('onCalendarViewChanged(): Year: ', event.year, ' - month: ', event.month, ' - first: ', event.first, ' - last: ', event.last);
}

calendarToggle callback

• called when the calendar is opened or closed

  • event: number from 1 to 4 indicating the reason of the event
    • 1 = calendar opened
    • 2 = calendar closed by date select
    • 3 = calendar closed by calendar button
    • 4 = calendar closed by outside click (document click)

• Example of the calendar toggle callback:

  onCalendarToggle(event: number): void {
      console.log('onCalendarClosed(): Reason: ', event);
  }

inputFocusBlur callback

• called when the input box get or lost focus

• event parameter:

  • event.reason: Reason of the event:
    • 1 = focus to input box
    • 2 = focus out of input box
  • event.value: Value of input box
  • event parameter type is IMyInputFocusBlur

• Example of the input focus blur callback:

  onInputFocusBlur(event: IMyInputFocusBlur): void {
      console.log('onInputFocusBlur(): Reason: ', event. reason, ' - Value: ', event.value);
  }

Change styles of the component

The styles of the component can be changed by overriding the styles.

Create a separate stylesheet file which contain the changed styles. Then import the stylesheet file in the place which is after the place where the component is loaded.

The sampleapp of the component contain an example:

• override.css contain the changed styles.
• index.html contain import of the override.css file.

Development of this component

• At first fork and clone this repo.

• Install all dependencies:

  1. npm install
  2. npm install --global gulp-cli

• Build the npmdist folder and execute tslint:

  1. gulp all

• Execute unit tests and coverage (output is generated to the test-output folder):

  1. npm test

• Run sample application:

  1. npm start
  2. Open http://localhost:5000 to browser

• Build a local npm installation package:

  1. gulp all
  2. cd npmdist
  3. npm pack
  • local installation package is created to the npmdist folder. For example: mydatepicker-1.1.1.tgz

• Install local npm package to your project:

  1. npm install path_to_npmdist/mydatepicker-1.1.1.tgz

Demo

Online demo is here

Compatibility (tested with)

• Firefox (latest)
• Chrome (latest)
• Chromium (latest)
• Edge
• IE11
• Safari

License

• License: MIT

Author

• Author: kekeh