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whycq

2023-10-08 3d775bfea16b5ac26ff0baac10f43b3367b0bf95

 uni_modules/uni-data-picker/components/uni-data-picker/uni-data-picker.vue

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<template>
   <view class="uni-data-tree">
      <view class="uni-data-tree-input" @click="handleInput">
         <slot :options="options" :data="inputSelected" :error="errorMessage">
            <view class="input-value" :class="{'input-value-border': border}">
               <text v-if="errorMessage" class="selected-area error-text">{{errorMessage}}</text>
               <view v-else-if="loading && !isOpened" class="selected-area">
                  <uni-load-more class="load-more" :contentText="loadMore" status="loading"></uni-load-more>
               </view>
               <scroll-view v-else-if="inputSelected.length" class="selected-area" scroll-x="true">
                  <view class="selected-list">
                     <view class="selected-item" v-for="(item,index) in inputSelected" :key="index">
                        <text>{{item.text}}</text><text v-if="index<inputSelected.length-1"
                           class="input-split-line">{{split}}</text>
                     </view>
                  </view>
               </scroll-view>
               <text v-else class="selected-area placeholder">{{placeholder}}</text>
               <view v-if="clearIcon && !readonly && inputSelected.length" class="icon-clear"
                  @click.stop="clear">
                  <uni-icons type="clear" color="#e1e1e1" size="14"></uni-icons>
               </view>
               <view class="arrow-area" v-if="(!clearIcon || !inputSelected.length) && !readonly ">
                  <view class="input-arrow"></view>
               </view>
            </view>
         </slot>
      </view>
      <view class="uni-data-tree-cover" v-if="isOpened" @click="handleClose"></view>
      <view class="uni-data-tree-dialog" v-if="isOpened">
         <view class="uni-popper__arrow"></view>
         <view class="dialog-caption">
            <view class="title-area">
               <text class="dialog-title">{{popupTitle}}</text>
            </view>
            <view class="dialog-close" @click="handleClose">
               <view class="dialog-close-plus" data-id="close"></view>
               <view class="dialog-close-plus dialog-close-rotate" data-id="close"></view>
            </view>
         </view>
         <data-picker-view class="picker-view" ref="pickerView" v-model="dataValue" :localdata="localdata"
            :preload="preload" :collection="collection" :field="field" :orderby="orderby" :where="where"
            :step-searh="stepSearh" :self-field="selfField" :parent-field="parentField" :managed-mode="true"
            :map="map" :ellipsis="ellipsis" @change="onchange" @datachange="ondatachange" @nodeclick="onnodeclick">
         </data-picker-view>
      </view>
   </view>
</template>

<script>
   import dataPicker from "../uni-data-pickerview/uni-data-picker.js"
   import DataPickerView from "../uni-data-pickerview/uni-data-pickerview.vue"

   /**
    * DataPicker 级联选择
    * @description 支持单列、和多列级联选择。列数没有限制，如果屏幕显示不全，顶部tab区域会左右滚动。
    * @tutorial https://ext.dcloud.net.cn/plugin?id=3796
    * @property {String} popup-title 弹出窗口标题
    * @property {Array} localdata 本地数据，参考
    * @property {Boolean} border = [true|false] 是否有边框
    * @property {Boolean} readonly = [true|false] 是否仅读
    * @property {Boolean} preload = [true|false] 是否预加载数据
    * @value true 开启预加载数据，点击弹出窗口后显示已加载数据
    * @value false 关闭预加载数据，点击弹出窗口后开始加载数据
    * @property {Boolean} step-searh = [true|false] 是否分布查询
    * @value true 启用分布查询，仅查询当前选中节点
    * @value false 关闭分布查询，一次查询出所有数据
    * @property {String|DBFieldString} self-field 分布查询当前字段名称
    * @property {String|DBFieldString} parent-field 分布查询父字段名称
    * @property {String|DBCollectionString} collection 表名
    * @property {String|DBFieldString} field 查询字段，多个字段用 `,` 分割
    * @property {String} orderby 排序字段及正序倒叙设置
    * @property {String|JQLString} where 查询条件
    * @event {Function} popupshow 弹出的选择窗口打开时触发此事件
    * @event {Function} popuphide 弹出的选择窗口关闭时触发此事件
    */
   export default {
      name: 'UniDataPicker',
      emits: ['popupopened', 'popupclosed', 'nodeclick', 'input', 'change', 'update:modelValue'],
      mixins: [dataPicker],
      components: {
         DataPickerView
      },
      props: {
         options: {
            type: [Object, Array],
            default () {
               return {}
            }
         },
         popupTitle: {
            type: String,
            default: '请选择'
         },
         placeholder: {
            type: String,
            default: '请选择'
         },
         heightMobile: {
            type: String,
            default: ''
         },
         readonly: {
            type: Boolean,
            default: false
         },
         clearIcon: {
            type: Boolean,
            default: true
         },
         border: {
            type: Boolean,
            default: true
         },
         split: {
            type: String,
            default: '/'
         },
         ellipsis: {
            type: Boolean,
            default: true
         }
      },
      data() {
         return {
            isOpened: false,
            inputSelected: []
         }
      },
      created() {
         this.form = this.getForm('uniForms')
         this.formItem = this.getForm('uniFormsItem')
         if (this.formItem) {
            if (this.formItem.name) {
               this.rename = this.formItem.name
               this.form.inputChildrens.push(this)
            }
         }

         this.$nextTick(() => {
            this.load()
         })
      },
      methods: {
         clear() {
            this.inputSelected.splice(0)
            this._dispatchEvent([])
         },
         onPropsChange() {
            this._treeData = []
            this.selectedIndex = 0
            this.load()
         },
         load() {
            if (this.readonly) {
               this._processReadonly(this.localdata, this.dataValue)
               return
            }

            if (this.isLocaldata) {
               this.loadData()
               this.inputSelected = this.selected.slice(0)
            } else if (!this.parentField && !this.selfField && this.hasValue) {
               this.getNodeData(() => {
                  this.inputSelected = this.selected.slice(0)
               })
            } else if (this.hasValue) {
               this.getTreePath(() => {
                  this.inputSelected = this.selected.slice(0)
               })
            }
         },
         getForm(name = 'uniForms') {
            let parent = this.$parent;
            let parentName = parent.$options.name;
            while (parentName !== name) {
               parent = parent.$parent;
               if (!parent) return false;
               parentName = parent.$options.name;
            }
            return parent;
         },
         show() {
            this.isOpened = true
            this.$nextTick(() => {
               this.$refs.pickerView.updateData({
                  treeData: this._treeData,
                  selected: this.selected,
                  selectedIndex: this.selectedIndex
               })
            })
            this.$emit('popupopened')
         },
         hide() {
            this.isOpened = false
            this.$emit('popupclosed')
         },
         handleInput() {
            if (this.readonly) {
               return
            }
            this.show()
         },
         handleClose(e) {
            this.hide()
         },
         onnodeclick(e) {
            this.$emit('nodeclick', e)
         },
         ondatachange(e) {
            this._treeData = this.$refs.pickerView._treeData
         },
         onchange(e) {
            this.hide()
            this.inputSelected = e
            this._dispatchEvent(e)
         },
         _processReadonly(dataList, value) {
            var isTree = dataList.findIndex((item) => {
               return item.children
            })
            if (isTree > -1) {
               let inputValue
               if (Array.isArray(value)) {
                  inputValue = value[value.length - 1]
                  if (typeof inputValue === 'object' && inputValue.value) {
                     inputValue = inputValue.value
                  }
               } else {
                  inputValue = value
               }
               this.inputSelected = this._findNodePath(inputValue, this.localdata)
               return
            }

            if (!this.hasValue) {
               this.inputSelected = []
               return
            }

            let result = []
            for (let i = 0; i < value.length; i++) {
               var val = value[i]
               var item = dataList.find((v) => {
                  return v.value == val
               })
               if (item) {
                  result.push(item)
               }
            }
            if (result.length) {
               this.inputSelected = result
            }
         },
         _filterForArray(data, valueArray) {
            var result = []
            for (let i = 0; i < valueArray.length; i++) {
               var value = valueArray[i]
               var found = data.find((item) => {
                  return item.value == value
               })
               if (found) {
                  result.push(found)
               }
            }
            return result
         },
         _dispatchEvent(selected) {
            let item = {}
            if (selected.length) {
               var value = new Array(selected.length)
               for (var i = 0; i < selected.length; i++) {
                  value[i] = selected[i].value
               }
               item = selected[selected.length - 1]
            } else {
               item.value = ''
            }
            if (this.formItem) {
               this.formItem.setValue(item.value)
            }

            this.$emit('input', item.value)
            this.$emit('update:modelValue', item.value)
            this.$emit('change', {
               detail: {
                  value: selected
               }
            })
         }
      }
   }
</script>

<style >
   .uni-data-tree {
      position: relative;
      font-size: 14px;
   }

   .error-text {
      color: #DD524D;
   }

   .input-value {
      /* #ifndef APP-NVUE */
      display: flex;
      /* #endif */
      flex-direction: row;
      align-items: center;
      flex-wrap: nowrap;
      font-size: 14px;
      line-height: 38px;
      padding: 0 5px;
      overflow: hidden;
      /* #ifdef APP-NVUE */
      height: 40px;
      /* #endif */
   }

   .input-value-border {
      border: 1px solid #e5e5e5;
      border-radius: 5px;
   }

   .selected-area {
      flex: 1;
      overflow: hidden;
      /* #ifndef APP-NVUE */
      display: flex;
      /* #endif */
      flex-direction: row;
   }

   .load-more {
      /* #ifndef APP-NVUE */
      margin-right: auto;
      /* #endif */
      /* #ifdef APP-NVUE */
      width: 40px;
      /* #endif */
   }

   .selected-list {
      /* #ifndef APP-NVUE */
      display: flex;
      /* #endif */
      flex-direction: row;
      flex-wrap: nowrap;
      padding: 0 5px;
   }

   .selected-item {
      flex-direction: row;
      padding: 0 1px;
      /* #ifndef APP-NVUE */
      white-space: nowrap;
      /* #endif */
   }

   .placeholder {
      color: grey;
   }

   .input-split-line {
      opacity: .5;
   }

   .arrow-area {
      position: relative;
      width: 20px;
      /* #ifndef APP-NVUE */
      margin-bottom: 5px;
      margin-left: auto;
      display: flex;
      /* #endif */
      justify-content: center;
      transform: rotate(-45deg);
      transform-origin: center;
   }

   .input-arrow {
      width: 7px;
      height: 7px;
      border-left: 1px solid #999;
      border-bottom: 1px solid #999;
   }

   .uni-data-tree-cover {
      position: fixed;
      left: 0;
      top: 0;
      right: 0;
      bottom: 0;
      background-color: rgba(0, 0, 0, .4);
      /* #ifndef APP-NVUE */
      display: flex;
      /* #endif */
      flex-direction: column;
      z-index: 100;
   }

   .uni-data-tree-dialog {
      position: fixed;
      left: 0;
      top: 20%;
      right: 0;
      bottom: 0;
      background-color: #FFFFFF;
      border-top-left-radius: 10px;
      border-top-right-radius: 10px;
      /* #ifndef APP-NVUE */
      display: flex;
      /* #endif */
      flex-direction: column;
      z-index: 102;
      overflow: hidden;
      /* #ifdef APP-NVUE */
      width: 750rpx;
      /* #endif */
   }

   .dialog-caption {
      position: relative;
      /* #ifndef APP-NVUE */
      display: flex;
      /* #endif */
      flex-direction: row;
      /* border-bottom: 1px solid #f0f0f0; */
   }

   .title-area {
      /* #ifndef APP-NVUE */
      display: flex;
      /* #endif */
      align-items: center;
      /* #ifndef APP-NVUE */
      margin: auto;
      /* #endif */
      padding: 0 10px;
   }

   .dialog-title {
      /* font-weight: bold; */
      line-height: 44px;
   }

   .dialog-close {
      position: absolute;
      top: 0;
      right: 0;
      bottom: 0;
      /* #ifndef APP-NVUE */
      display: flex;
      /* #endif */
      flex-direction: row;
      align-items: center;
      padding: 0 15px;
   }

   .dialog-close-plus {
      width: 16px;
      height: 2px;
      background-color: #666;
      border-radius: 2px;
      transform: rotate(45deg);
   }

   .dialog-close-rotate {
      position: absolute;
      transform: rotate(-45deg);
   }

   .picker-view {
      flex: 1;
      overflow: hidden;
   }

   /* #ifdef H5 */
   @media all and (min-width: 768px) {
      .uni-data-tree-cover {
         background-color: transparent;
      }

      .uni-data-tree-dialog {
         position: absolute;
         top: 55px;
         height: auto;
         min-height: 400px;
         max-height: 50vh;
         background-color: #fff;
         border: 1px solid #EBEEF5;
         box-shadow: 0 2px 12px 0 rgba(0, 0, 0, 0.1);
         border-radius: 4px;
         overflow: unset;
      }

      .dialog-caption {
         display: none;
      }

      .icon-clear {
         margin-right: 5px;
      }
   }

   /* #endif */

   /* picker 弹出层通用的指示小三角, todo：扩展至上下左右方向定位 */
   /* #ifndef APP-NVUE */
   .uni-popper__arrow,
   .uni-popper__arrow::after {
      position: absolute;
      display: block;
      width: 0;
      height: 0;
      border-color: transparent;
      border-style: solid;
      border-width: 6px;
   }

   .uni-popper__arrow {
      filter: drop-shadow(0 2px 12px rgba(0, 0, 0, 0.03));
      top: -6px;
      left: 10%;
      margin-right: 3px;
      border-top-width: 0;
      border-bottom-color: #EBEEF5;
   }

   .uni-popper__arrow::after {
      content: " ";
      top: 1px;
      margin-left: -6px;
      border-top-width: 0;
      border-bottom-color: #fff;
   }
   /* #endif */
   </style>