scinote-web/app/javascript/vue/shared/select_search.vue

<template>
  <Select
    class="sn-select sn-select--search hover:border-sn-sleepy-grey"
    :class="customClass"
    :className="className"
    :optionsClassName="optionsClassName"
    :withEditCursor="withEditCursor"
    :withClearButton="withClearButton"
    :value="value"
    :options="currentOptions"
    :placeholder="placeholder"
    :noOptionsPlaceholder="isLoading || isLazyLoading ? i18n.t('general.loading') : noOptionsPlaceholder"
    v-bind:disabled="disabled"
    @change="change"
    @reached-end="handleReachedEnd"
    @blur="blur"
    @open="open"
    @close="close"
    @focus="focus"
  >
    <input ref="focusElement" v-model="query" type="text" class="sn-select__search-input" :placeholder="searchPlaceholder" />
    <span class="sn-select__value">{{ valueLabel || (placeholder || i18n.t('general.select')) }}</span>
    <i class="sn-icon" :class="{ 'sn-icon-down': !isOpen, 'sn-icon-up': isOpen}"></i>
  </Select>
</template>

<script>
  import Select from './select.vue';
  import { debounce } from './debounce';

  export default {
    name: 'SelectSearch',
    emits: ['change', 'close', 'open', 'blur', 'update-options', 'reached-end'],
    props: {
      withClearButton: { type: Boolean, default: false },
      withEditCursor: { type: Boolean, default: false },
      value: { type: [String, Number] },
      options: { type: Array, default: () => [] },
      optionsUrl: { type: String },
      placeholder: { type: String },
      searchPlaceholder: { type: String },
      noOptionsPlaceholder: { type: String },
      disabled: { type: Boolean },
      isLoading: { type: Boolean, default: false },
      className: { type: String, default: '' },
      optionsClassName: { type: String, default: '' },
      customClass: { type: String, default: '' },
      lazyLoadEnabled: { type: Boolean },
      params: { type: Array, default: () => [] },
    },
    components: { Select },
    data() {
      return {
        query: null,
        currentOptions: null,
        isOpen: false,
        nextPage: 1,
        isLazyLoading: false,
      };
    },
    created() {
      this.currentOptions = this.options;
    },
    watch: {
      query() {
        if (!this.query) {
          this.currentOptions = this.options;
          return;
        }

        if (this.optionsUrlValue) {
          // reset current options and fetch when lazy loding is enabled
          if (this.lazyLoadEnabled) {
            this.currentOptions = [];
            this.isLazyLoading = true;
            this.nextPage = 1;
          }
          this.$nextTick(() => {
            debounce(this.fetchOptions(), 10);
          });
        } else {
          this.currentOptions = this.options.filter((o) => o[1].toLowerCase().includes(this.query.toLowerCase()));
        }
      },
      options() {
        this.currentOptions = this.options;
      },
    },
    computed: {
      valueLabel() {
        let option = this.currentOptions.find((o) => o[0] === this.value);
        return option && option[1];
      },
      optionsUrlValue() {
        if (!this.optionsUrl) return '';

        let url = `${this.optionsUrl}?query=${this.query || ''}`;
        if (this.lazyLoadEnabled && this.nextPage) url = `${url}&page=${this.nextPage}`;
        if (this.params.length) url = `${url}&${this.params.join('&')}`;
        return url;
      },
    },
    methods: {
      focus() {
        this.$refs.focusElement.focus();
      },
      blur() {
        this.isOpen = false;
        this.$emit('blur');
      },
      change(value) {
        this.isOpen = false;
        this.$emit('change', value);
      },
      open() {
        this.isOpen = true;
        this.$emit('open');
      },
      close() {
        this.query = '';
        this.isOpen = false;
        this.$emit('close');
      },
      handleReachedEnd() {
        if (this.query) {
          this.fetchOptions();
        } else {
          this.$emit('reached-end');
        }
      },
      fetchOptions() {
        if (!this.nextPage || !this.optionsUrl) return;

        $.ajax({
          url: this.optionsUrlValue,
          success: (result) => {
            if (this.lazyLoadEnabled) {
              this.nextPage = result.next_page;
              this.$emit('update-options', this.currentOptions, result);
              this.isLazyLoading = false;
              return;
            }
            this.currentOptions = result;
          },
        });
      }
    },
  };
</script>