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 | | <template> |  |   <div |  |     class="el-select-dropdown el-popper" |  |     :class="[{ 'is-multiple': $parent.multiple }, popperClass]" |  |     :style="{ minWidth: minWidth }"> |  |     <slot></slot> |  |   </div> |  | </template> |  |   |  | <script type="text/babel"> |  |   import Popper from 'element-ui/src/utils/vue-popper'; |  |   |  |   export default { |  |     name: 'ElSelectDropdown', |  |   |  |     componentName: 'ElSelectDropdown', |  |   |  |     mixins: [Popper], |  |   |  |     props: { |  |       placement: { |  |         default: 'bottom-start' |  |       }, |  |   |  |       boundariesPadding: { |  |         default: 0 |  |       }, |  |   |  |       popperOptions: { |  |         default() { |  |           return { |  |             gpuAcceleration: false |  |           }; |  |         } |  |       }, |  |   |  |       visibleArrow: { |  |         default: true |  |       }, |  |   |  |       appendToBody: { |  |         type: Boolean, |  |         default: true |  |       } |  |     }, |  |   |  |     data() { |  |       return { |  |         minWidth: '' |  |       }; |  |     }, |  |   |  |     computed: { |  |       popperClass() { |  |         return this.$parent.popperClass; |  |       } |  |     }, |  |   |  |     watch: { |  |       '$parent.inputWidth'() { |  |         this.minWidth = this.$parent.$el.getBoundingClientRect().width + 'px'; |  |       } |  |     }, |  |   |  |     mounted() { |  |       this.referenceElm = this.$parent.$refs.reference.$el; |  |       this.$parent.popperElm = this.popperElm = this.$el; |  |       this.$on('updatePopper', () => { |  |         if (this.$parent.visible) this.updatePopper(); |  |       }); |  |       this.$on('destroyPopper', this.destroyPopper); |  |     } |  |   }; |  | </script> | 
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