feat(picker): Replace blank days with dates from previous / next mont…

…hs (#46)

docs/.vuepress/components/Demo.vue

@@ -36,7 +36,20 @@
           first-day-of-week="mon"></datepicker>
         </code>
         <hr />
-        <p>{{ vModelExample }}</p>
+      </div>
+    </div>
+
+    <div class="example">
+      <h3>Only show dates from current month datepicker</h3>
+      <Datepicker
+        placeholder="Select Date"
+        :show-edge-dates="false"
+      />
+      <div class="coding">
+        <code>
+          &lt;datepicker placeholder="Select Date" :show-edge-dates="false"&gt;&lt;/datepicker&gt;
+        </code>
+        <hr />
       </div>
     </div>
 

docs/guide/Props/README.md

@@ -9,7 +9,7 @@
 | calendar-button               | Boolean          | false       | Show an icon that that can be clicked           |
 | calendar-button-icon          | String           |             | Use icon for button (ex: fa fa-calendar)        |
 | calendar-button-icon-content  | String           |             | Use for material-icons (ex: event)              |
-| calendar-class                | String\|Object |           | CSS class applied to the calendar el            |
+| calendar-class                | String|Object |           | CSS class applied to the calendar el            |
 | clear-button                  | Boolean          | false       | Show an icon for clearing the date              |
 | clear-button-icon             | String           |             | Use icon for button (ex: fa fa-times)           |
 | day-cell-content              | Function         |             | Use to render custom content in day cell        |
@@ -33,6 +33,7 @@
 | placeholder                   | String           |             | Input placeholder text                          |
 | required                      | Boolean          | false       | Sets html required attribute on input           |
 | ref-name                      | String           |             | Sets a ref name directly on the input field     |
+| show-edge-dates               | Boolean          | true        | If `false`, dates from previous/next months won't show       |
 | show-header                   | Boolean          | true        | If `false`, the header section won't show       |
 | show-calendar-on-focus        | Boolean          | false       | Opens the calendar on input focus               |
 | show-calendar-on-button-click | Boolean          | false       | Only open the calendar on calendar-button click |

example/Demo.vue

@@ -36,6 +36,17 @@
       </code>
     </div>
 
+    <div class="example">
+      <h3>Only show dates from current month datepicker</h3>
+      <Datepicker
+        placeholder="Type or select date"
+        :show-edge-dates="false"
+      />
+      <code>
+        &lt;datepicker placeholder="Type or select date" :show-edge-dates="false"&gt;&lt;/datepicker&gt;
+      </code>
+    </div>
+
     <div class="example">
       <h3>Bootstrap styled datepicker</h3>
       <Datepicker

src/components/Datepicker.vue

@@ -76,6 +76,7 @@
             :page-date="pageDate"
             :page-timestamp="pageTimestamp"
             :selected-date="selectedDate"
+            :show-edge-dates="showEdgeDates"
             :show-full-month-name="fullMonthName"
             :show-header="showHeader"
             :translation="translation"
@@ -202,6 +203,10 @@ export default {
       type: String,
       default: 'day',
     },
+    showEdgeDates: {
+      type: Boolean,
+      default: true,
+    },
     showHeader: {
       type: Boolean,
       default: true,

src/components/PickerDay.vue

@@ -30,22 +30,15 @@
       >
         {{ d }}
       </span>
-      <template v-if="blankDays > 0">
-        <span
-          v-for="d in blankDays"
-          :key="d.timestamp"
-          class="cell day blank"
-        />
-        <!--    TODO change grid system setup with for example flex to remove the magic    -->
-        <!--    the comment arrows in the next two lines are necessary magic to remove the WS   -->
-      </template><!--
-      --><span
-      v-for="day in days"
-      :key="day.timestamp"
-      :class="dayClasses(day)"
-      class="cell day"
-      @click="selectDate(day)"
-    >{{ dayCellContent(day) }}</span>
+      <span
+        v-for="day in days"
+        :key="day.timestamp"
+        class="cell day"
+        :class="dayClasses(day)"
+        @click="selectDate(day)"
+      >
+        {{ dayCellContent(day) }}
+      </span>
     </div>
     <slot name="calendarFooterDay" />
   </div>
@@ -78,17 +71,12 @@ export default {
       type: Boolean,
       default: false,
     },
+    showEdgeDates: {
+      type: Boolean,
+      default: true,
+    },
   },
   computed: {
-    /**
-     * Returns the day number of the week less one for the first of the current month
-     * Used to show amount of empty cells before the first in the day calendar layout
-     * @return {Number}
-     */
-    blankDays() {
-      const dObj = this.newPageDate()
-      return (7 - this.firstDayOfWeekNumber + this.utils.getDay(dObj)) % 7
-    },
     /**
      * Gets the name of the month the current page is on
      * @return {String}
@@ -112,11 +100,10 @@ export default {
      */
     days() {
       const days = []
-      const dObj = this.newPageDate()
-      const daysInMonth = this.utils.daysInMonth(
-        this.utils.getFullYear(dObj), this.utils.getMonth(dObj),
-      )
-      for (let i = 0; i < daysInMonth; i += 1) {
+      const daysInCalendar = this.daysFromPrevMonth + this.daysInMonth + this.daysFromNextMonth
+      const firstOfMonth = this.newPageDate()
+      const dObj = new Date(firstOfMonth.setDate(firstOfMonth.getDate() - this.daysFromPrevMonth))
+      for (let i = 0; i < daysInCalendar; i += 1) {
         days.push(this.makeDay(i, dObj))
         this.utils.setDate(dObj, this.utils.getDate(dObj) + 1)
       }
@@ -129,6 +116,30 @@ export default {
     daysOfWeek() {
       return this.translation.getDaysStartingOn(this.firstDayOfWeekNumber)
     },
+    /**
+     * Returns the number of days in this month
+     * @return {String[]}
+     */
+    daysInMonth() {
+      const dObj = this.newPageDate()
+      return this.utils.getDaysInMonth(dObj)
+    },
+    /**
+     * Calculates how many days to show from the previous month
+     * @return {number}
+     */
+    daysFromPrevMonth() {
+      const dObj = this.newPageDate()
+      return (7 - this.firstDayOfWeekNumber + this.utils.getDay(dObj)) % 7
+    },
+    /**
+     * Calculates how many days to show from the next month
+     * @return {number}
+     */
+    daysFromNextMonth() {
+      const daysThisAndPrevMonth = this.daysFromPrevMonth + this.daysInMonth
+      return (Math.ceil(daysThisAndPrevMonth / 7) * 7) - daysThisAndPrevMonth
+    },
     /**
      * Returns first-day-of-week as a number (Sunday is 0)
      * @return {Number}
@@ -167,6 +178,10 @@ export default {
     isYmd() {
       return this.translation.ymd && this.translation.ymd === true
     },
+    nextPageDate() {
+      const d = new Date(this.pageTimestamp)
+      return new Date(this.utils.setMonth(d, this.utils.getMonth(d) + 1))
+    },
   },
   methods: {
     /**
@@ -188,6 +203,7 @@ export default {
         selected: day.isSelected,
         disabled: day.isDisabled,
         highlighted: day.isHighlighted,
+        muted: day.isPreviousMonth || day.isNextMonth,
         today: day.isToday,
         weekend: day.isWeekend,
         sat: day.isSaturday,
@@ -316,21 +332,26 @@ export default {
      * @return {Object}
      */
     makeDay(id, dObj) {
+      const isNextMonth = dObj >= this.nextPageDate
+      const isPreviousMonth = dObj < this.pageDate
       const isSaturday = this.utils.getDay(dObj) === 6
       const isSunday = this.utils.getDay(dObj) === 0
+      const showDate = this.showEdgeDates || !(isPreviousMonth || isNextMonth)
 
       return {
-        date: this.utils.getDate(dObj),
+        date: showDate ? this.utils.getDate(dObj) : '',
         timestamp: dObj.valueOf(),
         isSelected: this.isSelectedDate(dObj),
-        isDisabled: this.isDisabledDate(dObj),
+        isDisabled: showDate ? this.isDisabledDate(dObj) : true,
         isHighlighted: this.isHighlightedDate(dObj),
         isHighlightStart: this.isHighlightStart(dObj),
         isHighlightEnd: this.isHighlightEnd(dObj),
         isToday: this.utils.compareDates(dObj, new Date()),
         isWeekend: isSaturday || isSunday,
         isSaturday,
         isSunday,
+        isPreviousMonth,
+        isNextMonth,
       }
     },
     /**

src/styles/style.scss

@@ -146,8 +146,8 @@
       }
     }
 
-    &.grey {
-      color: #888;
+    &.muted {
+      color: #a3a3a3;
 
       &:hover {
         background: inherit;
@@ -175,7 +175,6 @@
   }
 }
 
-
 .vdp-datepicker__clear-button,
 .vdp-datepicker__calendar-button {
   cursor: pointer;

src/utils/DateUtils.js

@@ -21,6 +21,14 @@ const utils = {
     return this.useUtc ? date.getUTCMonth() : date.getMonth()
   },
 
+  /**
+   * Returns the number of days in the month, using UTC or not
+   * @param {Date} date
+   */
+  getDaysInMonth(date) {
+    return this.daysInMonth(this.getFullYear(date), this.getMonth(date))
+  },
+
   /**
    * Returns the date, using UTC or not
    * @param {Date} date

test/unit/specs/PickerDay/firstDayOfWeek.spec.js

@@ -1,6 +1,9 @@
 import { shallowMount } from '@vue/test-utils'
 import PickerDay from '~/components/PickerDay'
 import { en } from '~/locale'
+import { makeDateUtils } from '~/utils/DateUtils'
+
+const constructedDateUtils = makeDateUtils(false)
 
 describe('PickerDay: Set first day of week', () => {
   let wrapper
@@ -27,18 +30,30 @@ describe('PickerDay: Set first day of week', () => {
     expect(wrapper.vm.daysOfWeek[6]).toEqual('Sun')
   })
 
-  it('should have 6 blankDays when month starts on a Sunday', () => {
+  it('should have 6 days from previous month when month starts on a Sunday', () => {
+    const testDate = new Date(2020, 10, 1)
+    const startDate = constructedDateUtils.getNewDateObject(testDate)
+
     wrapper.setProps({
-      pageDate: new Date(2018, 3, 1),
+      pageDate: testDate,
+      pageTimestamp: constructedDateUtils.setDate(startDate, 1),
     })
-    expect(wrapper.vm.blankDays).toEqual(6)
+    for (let i = 0; i < 6; i += 1) {
+      expect(wrapper.vm.days[i].isPreviousMonth).toBeTruthy()
+      expect(wrapper.vm.days[i].isNextMonth).toBeFalsy()
+    }
   })
 
-  it('should have no blankDays when month starts on a Monday', () => {
+  it('should have no days from previous month when month starts on a Monday', () => {
+    const testDate = new Date(2020, 5, 1)
+    const startDate = constructedDateUtils.getNewDateObject(testDate)
+
     wrapper.setProps({
-      pageDate: new Date(2018, 9, 1),
+      pageDate: testDate,
+      pageTimestamp: constructedDateUtils.setDate(startDate, 1),
     })
-    expect(wrapper.vm.blankDays).toEqual(0)
+    expect(wrapper.vm.days[0].isPreviousMonth).toBeFalsy()
+    expect(wrapper.vm.days[0].isNextMonth).toBeFalsy()
   })
 })
 
@@ -59,17 +74,29 @@ describe('PickerDay: Datepicker with Saturday as first day of week', () => {
     wrapper.destroy()
   })
 
-  it('should have 6 blankDays when month starts on a Friday', () => {
+  it('should have 6 days from previous month when month starts on a Friday', () => {
+    const testDate = new Date(2021, 0, 1)
+    const startDate = constructedDateUtils.getNewDateObject(testDate)
+
     wrapper.setProps({
-      pageDate: new Date(2021, 0, 1),
+      pageDate: testDate,
+      pageTimestamp: constructedDateUtils.setDate(startDate, 1),
     })
-    expect(wrapper.vm.blankDays).toEqual(6)
+    for (let i = 0; i < 6; i += 1) {
+      expect(wrapper.vm.days[i].isPreviousMonth).toBeTruthy()
+      expect(wrapper.vm.days[i].isNextMonth).toBeFalsy()
+    }
   })
 
-  it('should have no blankDays when month starts on a Saturday', () => {
+  it('should have no days from previous month when month starts on a Saturday', () => {
+    const testDate = new Date(2020, 7, 1)
+    const startDate = constructedDateUtils.getNewDateObject(testDate)
+
     wrapper.setProps({
-      pageDate: new Date(2020, 7, 1),
+      pageDate: testDate,
+      pageTimestamp: constructedDateUtils.setDate(startDate, 1),
     })
-    expect(wrapper.vm.blankDays).toEqual(0)
+    expect(wrapper.vm.days[0].isPreviousMonth).toBeFalsy()
+    expect(wrapper.vm.days[0].isNextMonth).toBeFalsy()
   })
 })