vaadin · yuriy-fix · Jan 15, 2024 · Jan 5, 2023 · Jan 6, 2023 · Jan 9, 2023
diff --git a/dev/date-picker.html b/dev/date-picker.html
@@ -9,6 +9,17 @@
     <script type="module">
       import '@vaadin/date-picker';
       import '@vaadin/tooltip';
+      const isDateDisabled = (date) => {
+        // Exclude weekends and the 16th day of each month:
+        const checkDate = new Date(0, 0);
+        checkDate.setFullYear(date.year);
+        checkDate.setMonth(date.month);
+        checkDate.setDate(date.day);
+        return checkDate.getDay() === 0 || checkDate.getDay() === 6 || checkDate.getDate() === 16;
+      }
+      const picker = document.querySelector('vaadin-date-picker');
+      picker.isDateDisabled = isDateDisabled;
+      picker.min = '2023-11-01';
     </script>
   </head>
   <body>

diff --git a/packages/date-picker/src/vaadin-date-picker-helper.d.ts b/packages/date-picker/src/vaadin-date-picker-helper.d.ts
@@ -17,7 +17,12 @@ declare function dateEquals(date1: Date | null, date2: Date | null): boolean;
  *
  * @returns True if the date is in the range
  */
-declare function dateAllowed(date: Date, min: Date | null, max: Date | null): boolean;
+declare function dateAllowed(
+  date: Date,
+  min: Date | null,
+  max: Date | null,
+  isDateDisabled: (DatePickerDate) => boolean | null,
+): boolean;
 
 /**
  * Get closest date from array of dates.

diff --git a/packages/date-picker/src/vaadin-date-picker-helper.js b/packages/date-picker/src/vaadin-date-picker-helper.js
@@ -53,16 +53,37 @@ export function dateEquals(date1, date2) {
   );
 }
 
+/**
+ * Extracts the basic component parts of a date (day, month and year)
+ * to the expected format.
+ * @param {!Date} date
+ * @return {{day: number, month: number, year: number}}
+ */
+export function extractDateParts(date) {
+  return {
+    day: date.getDate(),
+    month: date.getMonth(),
+    year: date.getFullYear(),
+  };
+}
+
 /**
  * Check if the given date is in the range of allowed dates.
  *
  * @param {!Date} date The date to check
  * @param {Date} min Range start
  * @param {Date} max Range end
+ * @param {function(!DatePickerDate): boolean} isDateDisabled Callback to check if the date is disabled
  * @return {boolean} True if the date is in the range
  */
-export function dateAllowed(date, min, max) {
-  return (!min || date >= min) && (!max || date <= max);
+export function dateAllowed(date, min, max, isDateDisabled) {
+  let dateIsDisabled = false;
+  if (typeof isDateDisabled === 'function' && !!date) {
+    const dateToCheck = extractDateParts(date);
+    dateIsDisabled = isDateDisabled(dateToCheck);
+  }
+
+  return (!min || date >= min) && (!max || date <= max) && !dateIsDisabled;
 }
 
 /**
@@ -90,20 +111,6 @@ export function getClosestDate(date, dates) {
     });
 }
 
-/**
- * Extracts the basic component parts of a date (day, month and year)
- * to the expected format.
- * @param {!Date} date
- * @return {{day: number, month: number, year: number}}
- */
-export function extractDateParts(date) {
-  return {
-    day: date.getDate(),
-    month: date.getMonth(),
-    year: date.getFullYear(),
-  };
-}
-
 /**
  * Get difference in months between today and given months value.
  *

diff --git a/packages/date-picker/src/vaadin-date-picker-mixin.d.ts b/packages/date-picker/src/vaadin-date-picker-mixin.d.ts
@@ -237,6 +237,13 @@ export declare class DatePickerMixinClass {
    */
   max: string | undefined;
 
+  /**
+   * A function to be used to determine whether the user can select a given date.
+   * Receives a `DatePickerDate` object of the date to be selected and should return a
+   * boolean.
+   */
+  isDateDisabled: (date: DatePickerDate) => boolean;
+
   /**
    * Opens the dropdown.
    */

diff --git a/packages/date-picker/src/vaadin-date-picker-mixin.js b/packages/date-picker/src/vaadin-date-picker-mixin.js
@@ -302,6 +302,17 @@ export const DatePickerMixin = (subclass) =>
           sync: true,
         },
 
+        /**
+         * A function to be used to determine whether the user can select a given date.
+         * Receives a `DatePickerDate` object of the date to be selected and should return a
+         * boolean.
+         *
+         * @type {function(DatePickerDate): boolean | undefined}
+         */
+        isDateDisabled: {
+          type: Function,
+        },
+
         /**
          * The earliest date that can be selected. All earlier dates will be disabled.
          * @type {Date | undefined}
@@ -365,7 +376,7 @@ export const DatePickerMixin = (subclass) =>
       return [
         '_selectedDateChanged(_selectedDate, i18n)',
         '_focusedDateChanged(_focusedDate, i18n)',
-        '__updateOverlayContent(_overlayContent, i18n, label, _minDate, _maxDate, _focusedDate, _selectedDate, showWeekNumbers)',
+        '__updateOverlayContent(_overlayContent, i18n, label, _minDate, _maxDate, _focusedDate, _selectedDate, showWeekNumbers, isDateDisabled)',
         '__updateOverlayContentTheme(_overlayContent, _theme)',
         '__updateOverlayContentFullScreen(_overlayContent, _fullscreen)',
       ];
@@ -599,7 +610,8 @@ export const DatePickerMixin = (subclass) =>
     checkValidity() {
       const inputValue = this._inputElementValue;
       const inputValid = !inputValue || (!!this._selectedDate && inputValue === this.__formatDate(this._selectedDate));
-      const minMaxValid = !this._selectedDate || dateAllowed(this._selectedDate, this._minDate, this._maxDate);
+      const isDateValid =
+        !this._selectedDate || dateAllowed(this._selectedDate, this._minDate, this._maxDate, this.isDateDisabled);
 
       let inputValidity = true;
       if (this.inputElement) {
@@ -611,7 +623,7 @@ export const DatePickerMixin = (subclass) =>
         }
       }
 
-      return inputValid && minMaxValid && inputValidity;
+      return inputValid && isDateValid && inputValidity;
     }
 
     /**
@@ -850,7 +862,17 @@ export const DatePickerMixin = (subclass) =>
 
     /** @private */
     // eslint-disable-next-line max-params
-    __updateOverlayContent(overlayContent, i18n, label, minDate, maxDate, focusedDate, selectedDate, showWeekNumbers) {
+    __updateOverlayContent(
+      overlayContent,
+      i18n,
+      label,
+      minDate,
+      maxDate,
+      focusedDate,
+      selectedDate,
+      showWeekNumbers,
+      isDateDisabled,
+    ) {
       if (overlayContent) {
         overlayContent.i18n = i18n;
         overlayContent.label = label;
@@ -859,6 +881,7 @@ export const DatePickerMixin = (subclass) =>
         overlayContent.focusedDate = focusedDate;
         overlayContent.selectedDate = selectedDate;
         overlayContent.showWeekNumbers = showWeekNumbers;
+        overlayContent.isDateDisabled = isDateDisabled;
       }
     }
 
@@ -930,9 +953,11 @@ export const DatePickerMixin = (subclass) =>
       const initialPosition =
         this._selectedDate || this._overlayContent.initialPosition || parsedInitialPosition || new Date();
 
-      return parsedInitialPosition || dateAllowed(initialPosition, this._minDate, this._maxDate)
+      return parsedInitialPosition || dateAllowed(initialPosition, this._minDate, this._maxDate, this.isDateDisabled)
         ? initialPosition
-        : getClosestDate(initialPosition, [this._minDate, this._maxDate]);
+        : this._minDate || this._maxDate
+        ? getClosestDate(initialPosition, [this._minDate, this._maxDate])
+        : new Date();
     }
 
     /**

diff --git a/packages/date-picker/src/vaadin-date-picker-overlay-content-mixin.js b/packages/date-picker/src/vaadin-date-picker-overlay-content-mixin.js
@@ -11,6 +11,7 @@ import { addListener, setTouchAction } from '@vaadin/component-base/src/gestures
 import { MediaQueryController } from '@vaadin/component-base/src/media-query-controller.js';
 import { SlotController } from '@vaadin/component-base/src/slot-controller.js';
 import { dateAfterXMonths, dateEquals, extractDateParts, getClosestDate } from './vaadin-date-picker-helper.js';
+import { dateAllowed } from './vaadin-date-picker-helper.js';
 
 /**
  * @polymerMixin
@@ -107,6 +108,17 @@ export const DatePickerOverlayContentMixin = (superClass) =>
           sync: true,
         },
 
+        /**
+         * A function to be used to determine whether the user can select a given date.
+         * Receives a `DatePickerDate` object of the date to be selected and should return a
+         * boolean.
+         *
+         * @type {function(DatePickerDate): boolean | undefined}
+         */
+        isDateDisabled: {
+          type: Function,
+        },
+
         /**
          * Input label
          */
@@ -134,9 +146,9 @@ export const DatePickerOverlayContentMixin = (superClass) =>
 
     static get observers() {
       return [
-        '__updateCalendars(calendars, i18n, minDate, maxDate, selectedDate, focusedDate, showWeekNumbers, _ignoreTaps, _theme)',
+        '__updateCalendars(calendars, i18n, minDate, maxDate, selectedDate, focusedDate, showWeekNumbers, _ignoreTaps, _theme, isDateDisabled)',
         '__updateCancelButton(_cancelButton, i18n)',
-        '__updateTodayButton(_todayButton, i18n, minDate, maxDate)',
+        '__updateTodayButton(_todayButton, i18n, minDate, maxDate, isDateDisabled)',
         '__updateYears(years, selectedDate, _theme)',
       ];
     }
@@ -303,10 +315,10 @@ export const DatePickerOverlayContentMixin = (superClass) =>
     }
 
     /** @private */
-    __updateTodayButton(todayButton, i18n, minDate, maxDate) {
+    __updateTodayButton(todayButton, i18n, minDate, maxDate, isDateDisabled) {
       if (todayButton) {
         todayButton.textContent = i18n && i18n.today;
-        todayButton.disabled = !this._isTodayAllowed(minDate, maxDate);
+        todayButton.disabled = !this._isTodayAllowed(minDate, maxDate, isDateDisabled);
       }
     }
 
@@ -321,12 +333,14 @@ export const DatePickerOverlayContentMixin = (superClass) =>
       showWeekNumbers,
       ignoreTaps,
       theme,
+      isDateDisabled,
     ) {
       if (calendars && calendars.length) {
         calendars.forEach((calendar) => {
           calendar.i18n = i18n;
           calendar.minDate = minDate;
           calendar.maxDate = maxDate;
+          calendar.isDateDisabled = isDateDisabled;
           calendar.focusedDate = focusedDate;
           calendar.selectedDate = selectedDate;
           calendar.showWeekNumbers = showWeekNumbers;
@@ -361,10 +375,14 @@ export const DatePickerOverlayContentMixin = (superClass) =>
      * @protected
      */
     _selectDate(dateToSelect) {
+      if (!this._dateAllowed(dateToSelect)) {
+        return false;
+      }
       this.selectedDate = dateToSelect;
       this.dispatchEvent(
         new CustomEvent('date-selected', { detail: { date: dateToSelect }, bubbles: true, composed: true }),
       );
+      return true;
     }
 
     /** @private */
@@ -775,9 +793,10 @@ export const DatePickerOverlayContentMixin = (superClass) =>
           handled = true;
           break;
         case 'Enter':
-          this._selectDate(this.focusedDate);
-          this._close();
-          handled = true;
+          if (this._selectDate(this.focusedDate)) {
+            this._close();
+            handled = true;
+          }
           break;
         case ' ':
           this.__toggleDate(this.focusedDate);
@@ -931,7 +950,8 @@ export const DatePickerOverlayContentMixin = (superClass) =>
 
     /** @private */
     _focusAllowedDate(dateToFocus, diff, keepMonth) {
-      if (this._dateAllowed(dateToFocus)) {
+      // For this check we do consider the isDateDisabled function because disabled dates are allowed to be focused, just not outside min/max
+      if (this._dateAllowed(dateToFocus, undefined, undefined, () => false)) {
         this.focusDate(dateToFocus, keepMonth);
       } else if (this._dateAllowed(this.focusedDate)) {
         // Move to min or max date
@@ -1009,18 +1029,18 @@ export const DatePickerOverlayContentMixin = (superClass) =>
     }
 
     /** @private */
-    _dateAllowed(date, min = this.minDate, max = this.maxDate) {
-      return (!min || date >= min) && (!max || date <= max);
+    _dateAllowed(date, min = this.minDate, max = this.maxDate, isDateDisabled = this.isDateDisabled) {
+      return dateAllowed(date, min, max, isDateDisabled);
     }
 
     /** @private */
-    _isTodayAllowed(min, max) {
+    _isTodayAllowed(min, max, isDateDisabled) {
       const today = new Date();
       const todayMidnight = new Date(0, 0);
       todayMidnight.setFullYear(today.getFullYear());
       todayMidnight.setMonth(today.getMonth());
       todayMidnight.setDate(today.getDate());
-      return this._dateAllowed(todayMidnight, min, max);
+      return this._dateAllowed(todayMidnight, min, max, isDateDisabled);
     }
 
     /**

diff --git a/packages/date-picker/src/vaadin-lit-month-calendar.js b/packages/date-picker/src/vaadin-lit-month-calendar.js
@@ -61,7 +61,7 @@ class MonthCalendar extends MonthCalendarMixin(ThemableMixin(PolylitMixin(LitEle
                 ${week.map((date) => {
                   const isFocused = dateEquals(date, this.focusedDate);
                   const isSelected = dateEquals(date, this.selectedDate);
-                  const isDisabled = !dateAllowed(date, this.minDate, this.maxDate);
+                  const isDisabled = !dateAllowed(date, this.minDate, this.maxDate, this.isDateDisabled);
 
                   const parts = [
                     'date',

diff --git a/packages/date-picker/src/vaadin-month-calendar-mixin.js b/packages/date-picker/src/vaadin-month-calendar-mixin.js
@@ -80,6 +80,17 @@ export const MonthCalendarMixin = (superClass) =>
           sync: true,
         },
 
+        /**
+         * A function to be used to determine whether the user can select a given date.
+         * Receives a `DatePickerDate` object of the date to be selected and should return a
+         * boolean.
+         * @type {Function | undefined}
+         */
+        isDateDisabled: {
+          type: Function,
+          value: () => false,
+        },
+
         disabled: {
           type: Boolean,
           reflectToAttribute: true,