openmct/src/plugins/timeConductor/ConductorTimeSystem.vue

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<template>
  <div
    v-if="selectedTimeSystem.name && readOnly === false"
    ref="timeSystemButton"
    class="c-ctrl-wrapper c-ctrl-wrapper--menus-up"
  >
    <button
      class="c-button--menu c-time-system-button"
      :class="[buttonCssClass]"
      @click.prevent.stop="showTimeSystemMenu"
    >
      <span class="c-button__label">{{ selectedTimeSystem.name }}</span>
    </button>
  </div>
  <div
    v-else
    class="c-compact-tc__setting-value__elem"
    :title="`Time system: ${selectedTimeSystem.name}`"
  >
    {{ selectedTimeSystem.name }}
  </div>
</template>

<script>
import { TIME_CONTEXT_EVENTS } from '../../api/time/constants';

export default {
  inject: ['openmct', 'configuration'],
  props: {
    buttonCssClass: {
      type: String,
      required: false,
      default() {
        return '';
      }
    },
    readOnly: {
      type: Boolean,
      default() {
        return false;
      }
    }
  },
  data() {
    let activeClock = this.openmct.time.getClock();

    return {
      selectedTimeSystem: JSON.parse(JSON.stringify(this.openmct.time.getTimeSystem())),
      timeSystems: this.getValidTimesystemsForClock(activeClock)
    };
  },
  mounted() {
    this.openmct.time.on(TIME_CONTEXT_EVENTS.timeSysteChanged, this.setViewFromTimeSystem);
    this.openmct.time.on(TIME_CONTEXT_EVENTS.clockChanged, this.setViewFromClock);
  },
  unmounted() {
    this.openmct.time.off(TIME_CONTEXT_EVENTS.timeSystemChanged, this.setViewFromTimeSystem);
    this.openmct.time.on(TIME_CONTEXT_EVENTS.clockChanged, this.setViewFromClock);
  },
  methods: {
    showTimeSystemMenu() {
      const elementBoundingClientRect = this.$refs.timeSystemButton.getBoundingClientRect();
      const x = elementBoundingClientRect.x;
      const y = elementBoundingClientRect.y;

      const menuOptions = {
        placement: this.openmct.menus.menuPlacement.TOP_RIGHT
      };

      this.openmct.menus.showMenu(x, y, this.timeSystems, menuOptions);
    },
    getValidTimesystemsForClock(clock) {
      return this.configuration.menuOptions
        .filter((menuOption) => menuOption.clock === (clock && clock.key))
        .map((menuOption) => {
          const timeSystem = JSON.parse(
            JSON.stringify(this.openmct.time.timeSystems.get(menuOption.timeSystem))
          );
          timeSystem.onItemClicked = () => this.setTimeSystemFromView(timeSystem);

          return timeSystem;
        });
    },
    setTimeSystemFromView(timeSystem) {
      if (timeSystem.key !== this.selectedTimeSystem.key) {
        let activeClock = this.openmct.time.getClock();
        let configuration = this.getMatchingConfig({
          clock: activeClock && activeClock.key,
          timeSystem: timeSystem.key
        });
        if (activeClock === undefined) {
          let bounds;

          if (this.selectedTimeSystem.isUTCBased && timeSystem.isUTCBased) {
            bounds = this.openmct.time.getBounds();
          } else {
            bounds = configuration.bounds;
          }

          this.openmct.time.setTimeSystem(timeSystem.key, bounds);
        } else {
          this.openmct.time.setTimeSystem(timeSystem.key);
          this.openmct.time.setClockOffsets(configuration.clockOffsets);
        }
      }
    },

    getMatchingConfig(options) {
      const matchers = {
        clock(config) {
          return options.clock === config.clock;
        },
        timeSystem(config) {
          return options.timeSystem === config.timeSystem;
        }
      };

      function configMatches(config) {
        return Object.keys(options).reduce((match, option) => {
          return match && matchers[option](config);
        }, true);
      }

      return this.configuration.menuOptions.filter(configMatches)[0];
    },

    setViewFromTimeSystem(timeSystem) {
      this.selectedTimeSystem = timeSystem;
    },

    setViewFromClock(clock) {
      let activeClock = this.openmct.time.getClock();
      this.timeSystems = this.getValidTimesystemsForClock(activeClock);
    }
  }
};
</script>