multi-selector-picker.vue
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<template>
<view class="lb-multi-selector lb-picker-item"
:style="{ height: height }">
<picker-view :value="pickerValue"
:indicator-style="indicatorStyle"
:style="{ height: height }"
@change="handleChange">
<picker-view-column v-for="(column, index) in pickerColumns"
:key="index">
<!-- #ifdef H5 -->
<view v-for="(item, i) in column || []"
:class="[
'lb-picker-column',
item[props.value] === selectValue[index]
? 'lb-picker-column-active'
: ''
]"
:key="i"
:data-item="pressEnable ? JSON.stringify(item) : ''"
@touchstart="touchstart"
@touchmove="touchmove"
@touchend="touchend">
<!-- #endif -->
<!-- #ifndef H5 -->
<view v-for="(item, i) in column || []"
:class="[
'lb-picker-column',
item[props.value] === selectValue[index]
? 'lb-picker-column-active'
: ''
]"
:key="i"
:data-item="item"
@touchstart="touchstart"
@touchmove="touchmove"
@touchend="touchend">
<!-- #endif -->
<!-- #ifdef APP-PLUS || H5 -->
<text :class="[
'lb-picker-column-label',
`lb-picker-column-label-${align}`
]"
:style="[
item[props.value] === selectValue[index]
? activeColumnStyle
: columnStyle
]">{{ getLabel(item, i, index) }}</text>
<!-- #endif -->
<!-- #ifndef APP-PLUS || H5 -->
<text :class="[
'lb-picker-column-label',
`lb-picker-column-label-${align}`
]">{{ item[props.label] || item }}</text>
<!-- #endif -->
</view>
</picker-view-column>
</picker-view>
</view>
</template>
<script>
import { commonMixin } from '../mixins'
export default {
props: {
value: Array,
list: Array,
mode: String,
props: Object,
level: Number,
visible: Boolean,
height: String,
columnStyle: Object,
activeColumnStyle: Object,
align: String,
pressEnable: Boolean,
pressTime: Number,
formatter: Function
},
mixins: [commonMixin],
data () {
return {
pickerValue: [],
pickerColumns: [],
selectValue: [],
selectItem: []
}
},
methods: {
handleChange (item) {
const pickerValue = item.detail.value
const columnIndex = pickerValue.findIndex(
(item, i) => item !== this.pickerValue[i]
)
const valueIndex = pickerValue[columnIndex]
this.setPickerChange(pickerValue, valueIndex, columnIndex)
},
setPickerChange (pickerValue, valueIndex, columnIndex) {
for (let i = 0; i < this.level; i++) {
if (i > columnIndex) {
pickerValue[i] = 0
const column =
this.pickerColumns[i - 1][valueIndex] ||
this.pickerColumns[i - 1][0]
this.$set(this.pickerColumns, i, column[this.props.children] || [])
valueIndex = 0
}
this.$set(this.pickerValue, i, pickerValue[i])
const selectItem = this.pickerColumns[i][pickerValue[i]]
if (selectItem) {
this.selectItem[i] = selectItem
this.selectValue[i] = selectItem[this.props.value]
} else {
const spliceNum = this.level - i
this.pickerValue.splice(i, spliceNum)
this.selectValue.splice(i, spliceNum)
this.selectItem.splice(i, spliceNum)
this.pickerColumns.splice(i, spliceNum)
break
}
}
this.$emit('change', {
value: this.selectValue,
item: this.selectItem,
index: this.pickerValue,
change: 'scroll'
})
}
}
}
</script>
<style lang="scss" scoped>
@import "../style/picker-item.scss";
</style>