chenhaodong / mew-iview

  <template>
      <i-select
          ref="select"
          class="ivu-auto-complete"
          :label="label"
          :disabled="disabled"
          :clearable="clearable"
          :placeholder="placeholder"
          :size="size"

          :placement="placement"

          :value="currentValue"

          filterable
          remote
          auto-complete
          :remote-method="remoteMethod"
          @on-change="handleChange"
          :transfer="transfer">
          <slot name="input">
              <i-input

                  :element-id="elementId"

                  ref="input"
                  slot="input"
                  v-model="currentValue"

                  :name="name"

                  :placeholder="placeholder"
                  :disabled="disabled"
                  :size="size"

                  :icon="inputIcon"

                  @on-click="handleClear"
                  @on-focus="handleFocus"
                  @on-blur="handleBlur"></i-input>
          </slot>
          <slot>
              <i-option v-for="item in filteredData" :value="item" :key="item">{{ item }}</i-option>
          </slot>
      </i-select>
  </template>
  <script>
      import iSelect from '../select/select.vue';
      import iOption from '../select/option.vue';
      import iInput from '../input/input.vue';
      import { oneOf } from '../../utils/assist';

      import Emitter from '../../mixins/emitter';

  
      export default {
          name: 'AutoComplete',

          mixins: [ Emitter ],

          components: { iSelect, iOption, iInput },
          props: {
              value: {
                  type: [String, Number],
                  default: ''
              },
              label: {
                  type: [String, Number],
                  default: ''
              },
              data: {
                  type: Array,
                  default: () => []
              },
              disabled: {
                  type: Boolean,
                  default: false
              },
              clearable: {
                  type: Boolean,
                  default: false
              },
              placeholder: {
                  type: String
              },
              size: {
                  validator (value) {
                      return oneOf(value, ['small', 'large', 'default']);

                  },
                  default () {

                      return !this.$IVIEW || this.$IVIEW.size === '' ? 'default' : this.$IVIEW.size;

                  }
              },

              icon: {
                  type: String
              },

              filterMethod: {
                  type: [Function, Boolean],
                  default: false
              },

              placement: {
                  validator (value) {
                      return oneOf(value, ['top', 'bottom']);
                  },
                  default: 'bottom'
              },

              transfer: {
                  type: Boolean,

                  default () {
                      return this.$IVIEW.transfer === '' ? false : this.$IVIEW.transfer;
                  }

              },
              name: {
                  type: String

              },
              elementId: {
                  type: String

              }
          },
          data () {
              return {

                  currentValue: this.value,
                  disableEmitChange: false    // for Form reset

              };
          },
          computed: {

              inputIcon () {
                  let icon = '';
                  if (this.clearable && this.currentValue) {
                      icon = 'ios-close';
                  } else if (this.icon) {
                      icon = this.icon;
                  }
                  return icon;

              },
              filteredData () {
                  if (this.filterMethod) {
                      return this.data.filter(item => this.filterMethod(this.currentValue, item));
                  } else {
                      return this.data;
                  }
              }
          },
          watch: {
              value (val) {

                  if(this.currentValue !== val){
                      this.disableEmitChange = true;
                  }

                  this.currentValue = val;
              },
              currentValue (val) {

                  this.$refs.select.setQuery(val);

                  this.$emit('input', val);

                  if (this.disableEmitChange) {
                      this.disableEmitChange = false;
                      return;
                  }

                  this.$emit('on-change', val);

                  this.dispatch('FormItem', 'on-form-change', val);

              }
          },
          methods: {
              remoteMethod (query) {
                  this.$emit('on-search', query);
              },
              handleChange (val) {

                  if (val === undefined || val === null) return;

                  this.currentValue = val;

                  this.$refs.input.blur();
                  this.$emit('on-select', val);
              },

              handleFocus (event) {

                  this.$emit('on-focus', event);

              },

              handleBlur (event) {

                  this.$emit('on-blur', event);

              },
              handleClear () {

                  if (!this.clearable) return;

                  this.currentValue = '';

                  this.$refs.select.reset();

              }
          }
      };

  </script>