openmct/src/plugins/timeConductor/DatePicker.vue

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<template>
  <div
    ref="calendarHolder"
    class="c-ctrl-wrapper c-datetime-picker__wrapper"
    :class="{
      'c-ctrl-wrapper--menus-up': bottom !== true,
      'c-ctrl-wrapper--menus-down': bottom === true
    }"
  >
    <a class="c-icon-button icon-calendar" @click="toggle"></a>
    <div v-if="open" class="c-menu c-menu--mobile-modal c-datetime-picker">
      <div class="c-datetime-picker__close-button">
        <button class="c-click-icon icon-x-in-circle" @click="toggle"></button>
      </div>
      <div class="c-datetime-picker__pager c-pager l-month-year-pager">
        <div
          class="c-pager__prev c-icon-button icon-arrow-left"
          @click.stop="changeMonth(-1)"
        ></div>
        <div class="c-pager__month-year">{{ model.month }} {{ model.year }}</div>
        <div
          class="c-pager__next c-icon-button icon-arrow-right"
          @click.stop="changeMonth(1)"
        ></div>
      </div>
      <div class="c-datetime-picker__calendar c-calendar">
        <div class="c-calendar__row--header l-cal-row">
          <div
            v-for="day in ['Su', 'Mo', 'Tu', 'We', 'Th', 'Fr', 'Sa']"
            :key="day"
            class="c-calendar-cell"
          >
            {{ day }}
          </div>
        </div>
        <div v-for="(row, tableIndex) in table" :key="tableIndex" class="c-calendar__row--body">
          <div
            v-for="(cell, rowIndex) in row"
            :key="rowIndex"
            :class="{ 'is-in-month': isInCurrentMonth(cell), selected: isSelected(cell) }"
            class="c-calendar-cell"
            @click="select(cell)"
          >
            <div class="c-calendar__day--prime">
              {{ cell.day }}
            </div>
            <div class="c-calendar__day--sub">
              {{ cell.dayOfYear }}
            </div>
          </div>
        </div>
      </div>
    </div>
  </div>
</template>

<script>
import moment from 'moment';

import toggleMixin from '../../ui/mixins/toggle-mixin.js';

const TIME_NAMES = {
  hours: 'Hour',
  minutes: 'Minute',
  seconds: 'Second'
};
const MONTHS = moment.months();
const TIME_OPTIONS = (function makeRanges() {
  let arr = [];
  while (arr.length < 60) {
    arr.push(arr.length);
  }

  return {
    hours: arr.slice(0, 24),
    minutes: arr,
    seconds: arr
  };
})();

export default {
  mixins: [toggleMixin],
  inject: ['openmct'],
  props: {
    defaultDateTime: {
      type: String,
      default: undefined
    },
    formatter: {
      type: Object,
      required: true
    },
    bottom: {
      type: Boolean,
      default() {
        return false;
      }
    }
  },
  emits: ['date-selected'],
  data: function () {
    return {
      picker: {
        year: undefined,
        month: undefined,
        interacted: false
      },
      model: {
        year: undefined,
        month: undefined
      },
      table: undefined,
      date: undefined,
      time: undefined
    };
  },
  watch: {
    defaultDateTime() {
      this.updateFromModel(this.defaultDateTime);
    }
  },
  mounted: function () {
    this.updateFromModel(this.defaultDateTime);
    this.updateViewForMonth();
  },
  methods: {
    generateTable() {
      let m = moment
        .utc({
          year: this.picker.year,
          month: this.picker.month
        })
        .day(0);
      let table = [];
      let row;
      let col;

      for (row = 0; row < 6; row += 1) {
        table.push([]);
        for (col = 0; col < 7; col += 1) {
          table[row].push({
            year: m.year(),
            month: m.month(),
            day: m.date(),
            dayOfYear: m.dayOfYear()
          });
          m.add(1, 'days'); // Next day!
        }
      }

      return table;
    },

    updateViewForMonth() {
      this.model.month = MONTHS[this.picker.month];
      this.model.year = this.picker.year;
      this.table = this.generateTable();
    },

    updateFromModel(defaultDateTime) {
      let m = moment.utc(defaultDateTime);

      this.date = {
        year: m.year(),
        month: m.month(),
        day: m.date()
      };
      this.time = {
        hours: m.hour(),
        minutes: m.minute(),
        seconds: m.second()
      };

      // Zoom to that date in the picker, but
      // only if the user hasn't interacted with it yet.
      if (!this.picker.interacted) {
        this.picker.year = m.year();
        this.picker.month = m.month();
        this.updateViewForMonth();
      }
    },

    updateFromView() {
      let m = moment.utc({
        year: this.date.year,
        month: this.date.month,
        day: this.date.day,
        hour: this.time.hours,
        minute: this.time.minutes,
        second: this.time.seconds
      });
      this.$emit('date-selected', m.valueOf());
    },

    isInCurrentMonth(cell) {
      return cell.month === this.picker.month;
    },

    isSelected(cell) {
      let date = this.date || {};

      return cell.day === date.day && cell.month === date.month && cell.year === date.year;
    },

    select(cell) {
      this.date = this.date || {};
      this.date.month = cell.month;
      this.date.year = cell.year;
      this.date.day = cell.day;
      this.updateFromView();
    },

    dateEquals(d1, d2) {
      return d1.year === d2.year && d1.month === d2.month && d1.day === d2.day;
    },

    changeMonth(delta) {
      this.picker.month += delta;
      if (this.picker.month > 11) {
        this.picker.month = 0;
        this.picker.year += 1;
      }

      if (this.picker.month < 0) {
        this.picker.month = 11;
        this.picker.year -= 1;
      }

      this.picker.interacted = true;
      this.updateViewForMonth();
    },

    nameFor(key) {
      return TIME_NAMES[key];
    },

    optionsFor(key) {
      return TIME_OPTIONS[key];
    }
  }
};
</script>