element-ui select组件中复选时以字符串形式显示

我使用的element-ui的版本是1.4.13。

如上图所示，使用el-select组件，要实现可搜索、可复选、可创建条目时，展示样式是如上图所示，输入框的高度会撑开，影响页面布局，按照产品的需求，要调整为以下样式：

1、复选时，输入框中不以标签的形式展示，而是以字符串的形式展示。

2、超出部分显示省略号，并且鼠标移入显示提示框，用来展示全选的内容。

下面是源码修改部分：

（1）在select的props中添加了一个参数notag用来控制是否以字符串形式显示输入框中的数据。添加了上面的el-popover标签，主要是文字超出时显示，这个后面再讲。底下的span标签就是在notag参数为true时显示，data中添加currentsellabel，用来显示处理后的多选数据，将数组转成字符串。

（2）在这里加了一个类，主要是方便后面加span标签的css样式。在select.css文件中的css样式如下面代码所示：

.el-select__tags.notags .notagspan{
    display: inline-block;
    font-size: 12px;
    width: 100%;
    padding:0 6px;
    overflow: hidden; /*自动隐藏文字*/
    text-overflow: ellipsis; /*文字隐藏后添加省略号*/
    white-space: nowrap; /*强制不换行*/
}

（3）在notag参数为true时显示class="notagspan"的span标签时，对应的el-tag标签就不再显示，如图所示，也需要在el-tag标签中添加notag控制

（4）在setselected方法中处理多选时的数据，将数组转成字符串，如下图所示：

（5）文字超出时显示提示框，效果如下：

需要在methods中添加如下方法：

 //当复选时文字超出输入框，出现提示框
        showspantooltip: function (event) {
            if(!this.showpop) return;
            var ev = event || window.event;
            var eventname = ev.target.classname;
            if (eventname.indexof('notagspan') != -1) {
                if (ev.target.offsetwidth < ev.target.scrollwidth) {
                    var tooltip = this.$refs.texttooltip;
                    tooltip.referenceelm = ev.target;
                    tooltip.$refs.popper.style.display = 'none';
                    tooltip.dodestroy();
                    tooltip.showpopper = true;
                }
            }
        },
        //当复选时文字超出输入框，隐藏提示框
        hiddenspantooltip: function () {
            if(!this.showpop) return;
            const tooltip = this.$refs.texttooltip;
            if (tooltip) {
                tooltip.doclose() ;
                tooltip.dodestroy();
            }
        }

（6）多选时，可搜索。按照组件现在的，搜索框会在选项的下面出现，这样会撑开输入框的高度。

这里需要调整，将输入框放在下面的下拉菜单中，如图所示：

代码如下：

避免跟element原有的搜索框冲突，加了参数控制：

需要在select.css加入如下样式：

.notaginputdiv{
    border: 1px solid rgb(191, 193, 217);
    margin-left: -1px;
    margin-top:-30px;
    width: 100%;
    max-width: 185px;
    padding-right: 30px;
    overflow: hidden; /*自动隐藏文字*/
    text-overflow: ellipsis; /*文字隐藏后添加省略号*/
    white-space: nowrap; /*强制不换行*/
}

这个时候需要在下拉出现的时候调整整个下拉菜单的位置，具体修改代码的地方如下：
在data中加入initpoppertop，用来记录初始时下拉菜单的位置：
1、在watch中的visible中

2、在watch中的query中

3、methods的resetinputheight方法中

（7）多选时并且可搜索时，如果条目不存在时，创建条目，并且显示在下拉菜单中，这样可以通过反选删除选中的数据。
1、添加el-option标签，用来显示创建的条目。在data中添加muloptions数组，用来记录创建的条目。

2、handleoptionselect方法中处理数据

3、在option.vue的props中添加optcreated

ok,所有的就改完了，效果如图所示：

以下附源码：

<template>
  <div
    class="el-select"
    v-clickoutside="handleclose">
    <div
      class="el-select__tags"
      :class="{'notags':notag}"
      v-if="multiple"
      @click.stop="togglemenu"
      ref="tags"
      :style="{ 'max-width': inputwidth - 32 + 'px' }">
      <transition-group @after-leave="resetinputheight">
        <el-tag
          v-if="!notag"
          v-for="item in selected"
          :key="getvaluekey(item)"
          closable
          :hit="item.hitstate"
          type="primary"
          @close="deletetag($event, item)"
          close-transition>
          <span class="el-select__tags-text">{{ item.currentlabel }}</span>
        </el-tag>
      </transition-group>

        <el-popover
             ref="texttooltip"
             placement="top-start"
             width="200"
             trigger="hover"
             :content="currentsellabel">
        </el-popover>
        <span v-if="notag" class="notagspan"
              @mouseenter="showspantooltip($event)" @mouseleave="hiddenspantooltip($event)">
            {{currentsellabel}}
        </span>
      <input
        type="text"
        class="el-select__input"
        :class="`is-${ size }`"
        @focus="visible = true"
        :disabled="disabled"
        @keyup="manageplaceholder"
        @keydown="resetinputstate"
        @keydown.down.prevent="navigateoptions('next')"
        @keydown.up.prevent="navigateoptions('prev')"
        @keydown.enter.prevent="selectoption"
        @keydown.esc.stop.prevent="visible = false"
        @keydown.delete="deleteprevtag"
        v-model="query"
        :debounce="remote ? 300 : 0"
        v-if="filterable && !notag"
        :style="{ width: inputlength + 'px', 'max-width': inputwidth - 42 + 'px' }"
        ref="input">
    </div>
    <el-input
      ref="reference"
      v-model="selectedlabel"
      type="text"
      :placeholder="currentplaceholder"
      :name="name"
      :size="size"
      :disabled="disabled"
      :readonly="!filterable || multiple"
      :validate-event="false"
      @focus="handlefocus"
      @click="handleiconclick"
      @mousedown.native="handlemousedown"
      @keyup.native="debouncedoninputchange"
      @keydown.native.down.prevent="navigateoptions('next')"
      @keydown.native.up.prevent="navigateoptions('prev')"
      @keydown.native.enter.prevent="selectoption"
      @keydown.native.esc.stop.prevent="visible = false"
      @keydown.native.tab="visible = false"
      @paste.native="debouncedoninputchange"
      @mouseenter.native="inputhovering = true"
      @mouseleave.native="inputhovering = false"
      :icon="iconclass">
    </el-input>
    <transition
      name="el-zoom-in-top"
      @before-enter="handlemenuenter"
      @after-leave="dodestroy">
      <el-select-menu
        ref="popper"
        v-show="visible && emptytext !== false">
          <!--有notag时搜索框在下面显示-->
          <div  v-if="filterable && notag && multiple" :class="{'notaginputdiv':notag}">
              <input
                  type="text"
                  class="el-select__input"
                  :class="`is-${ size }`"
                  @focus="visible = true"
                  :disabled="disabled"
                  @keyup="manageplaceholder"
                  @keydown="resetinputstate"
                  @keydown.down.prevent="navigateoptions('next')"
                  @keydown.up.prevent="navigateoptions('prev')"
                  @keydown.enter.prevent="selectoption"
                  @keydown.esc.stop.prevent="visible = false"
                  @keydown.delete="deleteprevtag"
                  v-model="query"
                  :debounce="remote ? 300 : 0"
                  v-if="filterable && notag && multiple"
                  :style="{ width: inputlength + 'px', 'max-width': inputwidth - 42 + 'px' }"
                  ref="input">
            </div>
        <el-input v-model="search" @focus="visible = true" v-if="searchable"></el-input>
        <el-scrollbar
          tag="ul"
          wrap-class="el-select-dropdown__wrap"
          view-class="el-select-dropdown__list"
          :class="{ 'is-empty': !allowcreate && filteredoptionscount === 0 }"
          v-show="options.length > 0 && !loading">
          <el-option
            :value="query"
            created
            v-if="shownewoption">
          </el-option>
           <el-option
                  v-if="notag && multiple && allowcreate"
                  v-for="item in muloptions"
                  :key="item.currentlabel"
                  :optcreated="item.optcreated"
                  :value="item.currentlabel">
           </el-option>
          <slot></slot>
        </el-scrollbar>
        <p class="el-select-dropdown__empty" v-if="emptytext && (allowcreate && options.length === 0 || !allowcreate)">{{ emptytext }}</p>
      </el-select-menu>
    </transition>
  </div>
</template>

<script type="text/babel">
  import emitter from 'element-ui/src/mixins/emitter';
  import locale from 'element-ui/src/mixins/locale';
  import elinput from 'element-ui/packages/input';
  import elselectmenu from './select-dropdown.vue';
  import eloption from './option.vue';
  import eltag from 'element-ui/packages/tag';
  import elscrollbar from 'element-ui/packages/scrollbar';
  import debounce from 'throttle-debounce/debounce';
  import clickoutside from 'element-ui/src/utils/clickoutside';
  import { addclass, removeclass, hasclass } from 'element-ui/src/utils/dom';
  import { addresizelistener, removeresizelistener } from 'element-ui/src/utils/resize-event';
  import { t } from 'element-ui/src/locale';
  import scrollintoview from 'element-ui/src/utils/scroll-into-view';
  import { getvaluebypath } from 'element-ui/src/utils/util';

  const sizemap = {
    'large': 42,
    'small': 30,
    'mini': 22
  };

  export default {
    mixins: [emitter, locale],

    name: 'elselect',

    componentname: 'elselect',

    computed: {
      iconclass() {
        let criteria = this.clearable &&
          !this.disabled &&
          this.inputhovering &&
          !this.multiple &&
          this.value !== undefined &&
          this.value !== '';
        return criteria ? 'circle-close is-show-close' : (this.remote && this.filterable ? '' : 'caret-top');
      },

      debounce() {
        return this.remote ? 300 : 0;
      },

      emptytext() {
        if (this.loading) {
          return this.loadingtext || this.t('el.select.loading');
        } else {
          if (this.remote && this.query === '' && this.options.length === 0) return false;
          if (this.filterable && this.options.length > 0 && this.filteredoptionscount === 0) {
            return this.nomatchtext || this.t('el.select.nomatch');
          }
          if (this.options.length === 0) {
            return this.nodatatext || this.t('el.select.nodata');
          }
        }
        return null;
      },

      shownewoption() {
        let hasexistingoption = this.options.filter(option => !option.created)
          .some(option => option.currentlabel === this.query);
        return this.filterable && this.allowcreate && this.query !== '' && !hasexistingoption;
      }
    },

    components: {
      elinput,
      elselectmenu,
      eloption,
      eltag,
      elscrollbar
    },

    directives: { clickoutside },

    props: {
      name: string,
      value: {
        required: true
      },
      size: string,
      disabled: boolean,
      clearable: boolean,
      filterable: boolean,
      searchable: boolean,
      allowcreate: boolean,
      notag:boolean,  //多选的时候是否以字符串形式展示 f
      showpop: {  //是否在文字超出span标签的时候显示提示 f
         type: boolean,
         default: true
      },
      loading: boolean,
      popperclass: string,
      remote: boolean,
      loadingtext: string,
      nomatchtext: string,
      nodatatext: string,
      remotemethod: function,
      filtermethod: function,
      multiple: boolean,
      multiplelimit: {
        type: number,
        default: 0
      },
      placeholder: {
        type: string,
        default() {
          return t('el.select.placeholder');
        }
      },
      defaultfirstoption: boolean,
      valuekey: {
        type: string,
        default: 'value'
      }
    },

    data() {
      return {
        options: [],
        cachedoptions: [],
        createdlabel: null,
        createdselected: false,
        selected: this.multiple ? [] : {},
        isselect: true,
        inputlength: 20,
        inputwidth: 0,
        cachedplaceholder: '',
        optionscount: 0,
        filteredoptionscount: 0,
        visible: false,
        selectedlabel: '',
        hoverindex: -1,
        query: '',
        search: '',
        optionsalldisabled: false,
        inputhovering: false,
        currentplaceholder: '',
        currentsellabel:'', //多选时以字符串形式展示的标签 f
        initpoppertop:0, //初始时下拉框的位置 f
        muloptions:[]   //多选时添加的数据 f
      };
    },

    watch: {
      placeholder(val) {
        this.cachedplaceholder = this.currentplaceholder = val;
      },

      value(val) {
        if (this.multiple) {
          this.resetinputheight();
          if (val.length > 0 || (this.$refs.input && this.query !== '')) {
            this.currentplaceholder = '';
          } else {
            this.currentplaceholder = this.cachedplaceholder;
          }
        }
        this.setselected();
        if (this.filterable && !this.multiple) {
          this.inputlength = 20;
        }
        this.$emit('change', val);
        this.dispatch('elformitem', 'el.form.change', val);
      },

      search(val) {
        if (this.searchable) {
          this.$emit('search-change', val);
        }
      },
      query(val) {
        this.$nexttick(() => {
          if (this.visible) {
              this.broadcast('elselectdropdown', 'updatepopper');
              //multiple、notag、filterable 同时存在时，调整下拉框位置
              if(this.multiple && this.notag && this.filterable){
                  this.$nexttick(()=>{
                      var poppertop = window.getcomputedstyle? window.getcomputedstyle(this.$refs.popper.$el).top : this.$refs.popper.$el.currentstyle.top;
                      this.$refs.popper.$el.style.top = parseint(poppertop)+ 25+'px';
                  })
              }
          }
        });
        this.hoverindex = -1;
        if (this.multiple && this.filterable) {
          this.inputlength = this.$refs.input.value.length * 15 + 20;
          this.manageplaceholder();
          this.resetinputheight();
        }
        if (this.remote && typeof this.remotemethod === 'function') {
          this.hoverindex = -1;
          this.remotemethod(val);
          this.broadcast('eloption', 'resetindex');
        } else if (typeof this.filtermethod === 'function') {
          this.filtermethod(val);
          this.broadcast('eloptiongroup', 'querychange');
        } else {
          this.filteredoptionscount = this.optionscount;
          this.broadcast('eloption', 'querychange', val);
          this.broadcast('eloptiongroup', 'querychange');
        }
        if (this.defaultfirstoption && (this.filterable || this.remote) && this.filteredoptionscount) {
          this.checkdefaultfirstoption();
        }
      },

      visible(val) {
        if (!val) {
          this.$refs.reference.$el.queryselector('input').blur();
          this.handleiconhide();
          this.broadcast('elselectdropdown', 'destroypopper');
          if (this.$refs.input) {
            this.$refs.input.blur();
          }
          this.query = '';
          this.selectedlabel = '';
          this.inputlength = 20;
          this.resethoverindex();
          this.$nexttick(() => {
            if (this.$refs.input &&
              this.$refs.input.value === '' &&
              this.selected.length === 0) {
              this.currentplaceholder = this.cachedplaceholder;
            }
          });
          if (!this.multiple) {
            if (this.selected) {
              if (this.filterable && this.allowcreate &&
                this.createdselected && this.createdlabel) {
                this.selectedlabel = this.createdlabel;
              } else {
                this.selectedlabel = this.selected.currentlabel;
              }
              if (this.filterable) this.query = this.selectedlabel;
            }
          }
        } else {
          this.handleiconshow();
          this.broadcast('elselectdropdown', 'updatepopper');
           //multiple、notag、filterable 同时存在时，调整下拉框位置，并记录初始下拉框的位置
          if(this.multiple && this.notag && this.filterable){
                this.$nexttick(()=>{
                    this.$refs.input.focus();
                    var poppertop = window.getcomputedstyle? window.getcomputedstyle(this.$refs.popper.$el).top : this.$refs.popper.$el.currentstyle.top;
                    //记录初始下拉框的位置
                    this.initpoppertop = poppertop;
                    this.$refs.popper.$el.style.top = parseint(poppertop) + 25 +'px';
                })
            }
          if (this.filterable) {
            this.query = this.selectedlabel;
            if (this.multiple) {
              this.$refs.input.focus();
            } else {
              if (!this.remote) {
                this.broadcast('eloption', 'querychange', '');
                this.broadcast('eloptiongroup', 'querychange');
              }
              this.broadcast('elinput', 'inputselect');
            }
          }
        }
        this.$emit('visible-change', val);
      },

      options(val) {
        if (this.$isserver) return;
        this.optionsalldisabled = val.length === val.filter(item => item.disabled === true).length;
        if (this.multiple) {
          this.resetinputheight();
        }
        let inputs = this.$el.queryselectorall('input');
        if ([].indexof.call(inputs, document.activeelement) === -1) {
          this.setselected();
        }
        if (this.defaultfirstoption && (this.filterable || this.remote) && this.filteredoptionscount) {
          this.checkdefaultfirstoption();
        }
      }
    },

    methods: {
        //当复选时文字超出输入框，出现提示框
        showspantooltip: function (event) {
            if(!this.showpop) return;
            var ev = event || window.event;
            var eventname = ev.target.classname;
            if (eventname.indexof('notagspan') != -1) {
                if (ev.target.offsetwidth < ev.target.scrollwidth) {
                    var tooltip = this.$refs.texttooltip;
                    tooltip.referenceelm = ev.target;
                    tooltip.$refs.popper.style.display = 'none';
                    tooltip.dodestroy();
                    tooltip.showpopper = true;
                }
            }
        },
        //当复选时文字超出输入框，隐藏提示框
        hiddenspantooltip: function () {
            if(!this.showpop) return;
            const tooltip = this.$refs.texttooltip;
            if (tooltip) {
                tooltip.doclose() ;
                tooltip.dodestroy();
            }
        },
      handleiconhide() {
        let icon = this.$el.queryselector('.el-input__icon');
        if (icon) {
          removeclass(icon, 'is-reverse');
        }
      },

      handleiconshow() {
        let icon = this.$el.queryselector('.el-input__icon');
        if (icon && !hasclass(icon, 'el-icon-circle-close')) {
          addclass(icon, 'is-reverse');
        }
      },

      scrolltooption(classname = 'selected') {
        const menu = this.$refs.popper.$el.queryselector('.el-select-dropdown__wrap');
        scrollintoview(menu, menu.getelementsbyclassname(classname)[0]);
      },

      handlemenuenter() {
        this.$nexttick(() => this.scrolltooption());
      },

      getoption(value) {
        let option;
        const type = typeof value;
        const isobject = type !== 'string' && type !== 'number' && type !== 'boolean';
        for (let i = this.cachedoptions.length - 1; i >= 0; i--) {
          const cachedoption = this.cachedoptions[i];
          const isequal = isobject
            ? this.getvaluebypath(cachedoption.value, this.valuekey) === this.getvaluebypath(value, this.valuekey)
            : cachedoption.value === value;
          if (isequal) {
            option = cachedoption;
            break;
          }
        }
        if (option) return option;
        const label = !isobject
          ? value : '';
        let newoption = {
          value: value,
          currentlabel: label
        };
        if (this.multiple) {
          newoption.hitstate = false;
        }
        return newoption;
      },
      getvaluebypath(object, prop) {
        prop = prop || '';
        const paths = prop.split('.');
        let current = object;
        let result = null;
        for (let i = 0, j = paths.length; i < j; i++) {
          const path = paths[i];
          if (current !== 0 && !current) break;
          if (i === j - 1) {
            result = current[path];
            break;
          }
          current = current[path];
        }
        return result;
      },

      setselected() {
        if (!this.multiple) {
          let option = this.getoption(this.value);
          if (option.created) {
            this.createdlabel = option.currentlabel;
            this.createdselected = true;
          } else {
            this.createdselected = false;
          }
          this.selectedlabel = option.currentlabel;
          this.selected = option;
          if (this.filterable) this.query = this.selectedlabel;
          return;
        }
        let result = [];
        if (array.isarray(this.value)) {
          this.value.foreach(value => {
            result.push(this.getoption(value));
          });
        }
        this.selected = result;
         //复选时，选项以字符串的形式显示，此处处理显示数据，数组转成字符串
         if(this.notag && this.multiple){
              var arr = [];
              if(this.selected && this.selected.length){
                  this.selected.foreach(function(item){
                      arr.push(item.currentlabel);
                  })
              }
              this.currentsellabel = arr.join(',');
         }
        this.$nexttick(() => {
          this.resetinputheight();
        });
      },

      handlefocus() {
        this.visible = true;
      },

      handleiconclick(event) {
        if (this.iconclass.indexof('circle-close') > -1) {
          this.deleteselected(event);
        } else {
          this.togglemenu();
        }
      },

      handlemousedown(event) {
        if (event.target.tagname !== 'input') return;
        if (this.visible) {
          this.handleclose();
          event.preventdefault();
        }
      },

      dodestroy() {
        this.$refs.popper && this.$refs.popper.dodestroy();
        this.dropdownul = null;
      },

      handleclose() {
        this.visible = false;
      },

      togglelastoptionhitstate(hit) {
        if (!array.isarray(this.selected)) return;
        const option = this.selected[this.selected.length - 1];
        if (!option) return;

        if (hit === true || hit === false) {
          option.hitstate = hit;
          return hit;
        }

        option.hitstate = !option.hitstate;
        return option.hitstate;
      },

      deleteprevtag(e) {
        if (e.target.value.length <= 0 && !this.togglelastoptionhitstate()) {
          const value = this.value.slice();
          value.pop();
          this.$emit('input', value);
        }
      },

      manageplaceholder() {
        if (this.currentplaceholder !== '') {
          this.currentplaceholder = this.$refs.input.value ? '' : this.cachedplaceholder;
        }
      },

      resetinputstate(e) {
        if (e.keycode !== 8) this.togglelastoptionhitstate(false);
        this.inputlength = this.$refs.input.value.length * 15 + 20;
        this.resetinputheight();
      },

      resetinputheight() {
        this.$nexttick(() => {
          if (!this.$refs.reference) return;
          let inputchildnodes = this.$refs.reference.$el.childnodes;
          let input = [].filter.call(inputchildnodes, item => item.tagname === 'input')[0];
          input.style.height = math.max(this.$refs.tags.clientheight + 6, sizemap[this.size] || 36) + 'px';
          if (this.visible && this.emptytext !== false) {
            this.broadcast('elselectdropdown', 'updatepopper');
              //multiple、notag、filterable 同时存在时，判断当前下拉框是否在初始位置，不在则调整下拉框位置
              if(this.multiple && this.notag && this.filterable){
                  this.$nexttick(()=>{
                      var poppertop = window.getcomputedstyle? window.getcomputedstyle(this.$refs.popper.$el).top : this.$refs.popper.$el.currentstyle.top;
                      if(poppertop <= this.initpoppertop){
                          this.$refs.popper.$el.style.top = parseint(poppertop)+ 25+'px';
                      }
                  })
              }
          }
        });
      },

      resethoverindex() {
        settimeout(() => {
          if (!this.multiple) {
            this.hoverindex = this.options.indexof(this.selected);
          } else {
            if (this.selected.length > 0) {
              this.hoverindex = math.min.apply(null, this.selected.map(item => this.options.indexof(item)));
            } else {
              this.hoverindex = -1;
            }
          }
        }, 300);
      },

      handleoptionselect(option) {
        if (this.multiple) {
          const value = this.value.slice();
          const optionindex = this.getvalueindex(value, option.value);
          if (optionindex > -1) {
              //multiple、allowcreate存在，复选时可以向下拉列表中删除数据
              if(this.allowcreate && option.optcreated && this.notag){
                  if(this.muloptions && this.muloptions.length){
                      this.muloptions.foreach((item,index)=>{
                          if(item.currentvalue == option.currentvalue){
                              this.muloptions.splice(index, 1);
                          }
                      })
                  }
              }
            value.splice(optionindex, 1);
          } else if (this.multiplelimit <= 0 || value.length < this.multiplelimit) {
            value.push(option.value);
          }
          this.$emit('input', value);
          if (option.created) {
             //multiple、allowcreate存在，复选时可以像下拉列表中添加数据
             if(this.allowcreate && this.notag && !option.optcreated){
                  var obj = {
                      optcreated:true,
                      created:option.created,
                      currentlabel:option.currentlabel,
                      currentvalue:option.currentvalue
                  }
                  this.muloptions.push(obj);
             }
            this.query = '';
            this.inputlength = 20;
          }
          if (this.filterable) this.$refs.input.focus();
        } else {
          this.$emit('input', option.value);
          this.visible = false;
        }
        this.$nexttick(() => this.scrolltooption());
      },

      getvalueindex(arr = [], value) {
        const type = typeof value;
        const isobject = type !== 'string' && type !== 'number' && type !== 'boolean';
        if (!isobject) {
          return arr.indexof(value);
        } else {
          const valuekey = this.valuekey;
          let index = -1;
          arr.some((item, i) => {
            if (getvaluebypath(item, valuekey) === getvaluebypath(value, valuekey)) {
              index = i;
              return true;
            }
            return false;
          });
          return index;
        }
      },

      togglemenu() {
        if (this.filterable && this.query === '' && this.visible) {
          return;
        }
        if (!this.disabled) {
          this.visible = !this.visible;
        }
      },

      navigateoptions(direction) {
        if (!this.visible) {
          this.visible = true;
          return;
        }
        if (this.options.length === 0 || this.filteredoptionscount === 0) return;
        this.optionsalldisabled = this.options.length === this.options.filter(item => item.disabled === true).length;
        if (!this.optionsalldisabled) {
          if (direction === 'next') {
            this.hoverindex++;
            if (this.hoverindex === this.options.length) {
              this.hoverindex = 0;
            }
            if (this.options[this.hoverindex].disabled === true ||
              this.options[this.hoverindex].groupdisabled === true ||
              !this.options[this.hoverindex].visible) {
              this.navigateoptions('next');
            }
          }
          if (direction === 'prev') {
            this.hoverindex--;
            if (this.hoverindex < 0) {
              this.hoverindex = this.options.length - 1;
            }
            if (this.options[this.hoverindex].disabled === true ||
              this.options[this.hoverindex].groupdisabled === true ||
              !this.options[this.hoverindex].visible) {
              this.navigateoptions('prev');
            }
          }
        }
        this.$nexttick(() => this.scrolltooption('hover'));
      },

      selectoption() {
        if (this.options[this.hoverindex]) {
          this.handleoptionselect(this.options[this.hoverindex]);
        }
      },

      deleteselected(event) {
        event.stoppropagation();
        this.$emit('input', '');
        this.visible = false;
        this.$emit('clear');
      },

      deletetag(event, tag) {
        let index = this.selected.indexof(tag);
        if (index > -1 && !this.disabled) {
          const value = this.value.slice();
          value.splice(index, 1);
          this.$emit('input', value);
          this.$emit('remove-tag', tag);
        }
        event.stoppropagation();
      },

      oninputchange() {
        if (this.filterable) {
          this.query = this.selectedlabel;
        }
      },

      onoptiondestroy(option) {
        this.optionscount--;
        this.filteredoptionscount--;
        let index = this.options.indexof(option);
        if (index > -1) {
          this.options.splice(index, 1);
        }
        this.broadcast('eloption', 'resetindex');
      },

      resetinputwidth() {
        this.inputwidth = this.$refs.reference.$el.getboundingclientrect().width;
      },

      handleresize() {
        this.resetinputwidth();
        if (this.multiple) this.resetinputheight();
      },

      checkdefaultfirstoption() {
        this.hoverindex = -1;
        for (let i = 0; i !== this.options.length; ++i) {
          const option = this.options[i];
          if (this.query) {
            // pick first options that passes the filter
            if (!option.disabled && !option.groupdisabled && option.visible) {
              this.hoverindex = i;
              break;
            }
          } else {
            // pick currently selected option
            if (option.itemselected) {
              this.hoverindex = i;
              break;
            }
          }
        }
      },

      getvaluekey(item) {
        const type = typeof item.value;
        if (type === 'number' || type === 'string') {
          return item.value;
        } else {
          return getvaluebypath(item.value, this.valuekey);
        }
      }
    },

    created() {
      this.cachedplaceholder = this.currentplaceholder = this.placeholder;
      if (this.multiple && !array.isarray(this.value)) {
        this.$emit('input', []);
      }
      if (!this.multiple && array.isarray(this.value)) {
        this.$emit('input', '');
      }
      this.setselected();

      this.debouncedoninputchange = debounce(this.debounce, () => {
        this.oninputchange();
      });

      this.$on('handleoptionclick', this.handleoptionselect);
      this.$on('onoptiondestroy', this.onoptiondestroy);
      this.$on('setselected', this.setselected);
    },

    mounted() {
      if (this.multiple && array.isarray(this.value) && this.value.length > 0) {
        this.currentplaceholder = '';
      }
      addresizelistener(this.$el, this.handleresize);
      if (this.remote && this.multiple) {
        this.resetinputheight();
      }
      this.$nexttick(() => {
        if (this.$refs.reference && this.$refs.reference.$el) {
          this.inputwidth = this.$refs.reference.$el.getboundingclientrect().width;
        }
      });
    },

    beforedestroy() {
      if (this.$el && this.handleresize) removeresizelistener(this.$el, this.handleresize);
    }
  };
  // dialog_ref

</script>