165 lines
7.9 KiB
Vue
165 lines
7.9 KiB
Vue
<template>
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<uni-shadow-root class="vant-dist-picker-index"><view class="van-picker custom-class">
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<include v-if="toolbarPosition === 'top'" src="./toolbar.wxml"></include>
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<view v-if="loading" class="van-picker__loading">
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<loading color="#1989fa"></loading>
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</view>
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<view class="van-picker__columns" :style="computed.columnsStyle({ itemHeight, visibleItemCount })" @touchmove.stop.prevent="noop">
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<picker-column v-for="(item,index) in (computed.columns(columns))" :key="item.index" class="van-picker__column" :data-index="index" custom-class="column-class" :value-key="valueKey" :initial-options="item.values" :default-index="item.defaultIndex || defaultIndex" :item-height="itemHeight" :visible-item-count="visibleItemCount" active-class="active-class" @change="onChange"></picker-column>
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<view class="van-picker__mask" :style="computed.maskStyle({ itemHeight, visibleItemCount })"></view>
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<view class="van-picker__frame van-hairline--top-bottom" :style="computed.frameStyle({ itemHeight })"></view>
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</view>
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<include v-if="toolbarPosition === 'bottom'" src="./toolbar.wxml"></include>
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</view></uni-shadow-root>
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</template>
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<wxs src="./index.wxs" module="computed"></wxs>
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<script>
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import PickerColumn from '../picker-column/index.vue'
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import Loading from '../loading/index.vue'
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global['__wxVueOptions'] = {components:{'picker-column': PickerColumn,'loading': Loading}}
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global['__wxRoute'] = 'vant/dist/picker/index'
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import { VantComponent } from '../common/component';
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import { pickerProps } from './shared';
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VantComponent({
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classes: ['active-class', 'toolbar-class', 'column-class'],
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props: Object.assign(Object.assign({}, pickerProps), { valueKey: {
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type: String,
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value: 'text',
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}, toolbarPosition: {
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type: String,
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value: 'top',
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}, defaultIndex: {
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type: Number,
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value: 0,
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}, columns: {
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type: Array,
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value: [],
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observer(columns = []) {
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this.simple = columns.length && !columns[0].values;
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if (Array.isArray(this.children) && this.children.length) {
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this.setColumns().catch(() => { });
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}
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},
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} }),
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beforeCreate() {
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Object.defineProperty(this, 'children', {
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get: () => this.selectAllComponents('.van-picker__column') || [],
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});
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},
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methods: {
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noop() { },
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setColumns() {
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const { data } = this;
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const columns = this.simple ? [{ values: data.columns }] : data.columns;
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const stack = columns.map((column, index) => this.setColumnValues(index, column.values));
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return Promise.all(stack);
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},
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emit(event) {
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const { type } = event.currentTarget.dataset;
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if (this.simple) {
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this.$emit(type, {
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value: this.getColumnValue(0),
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index: this.getColumnIndex(0),
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});
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}
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else {
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this.$emit(type, {
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value: this.getValues(),
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index: this.getIndexes(),
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});
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}
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},
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onChange(event) {
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if (this.simple) {
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this.$emit('change', {
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picker: this,
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value: this.getColumnValue(0),
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index: this.getColumnIndex(0),
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});
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}
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else {
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this.$emit('change', {
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picker: this,
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value: this.getValues(),
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index: event.currentTarget.dataset.index,
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});
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}
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},
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// get column instance by index
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getColumn(index) {
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return this.children[index];
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},
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// get column value by index
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getColumnValue(index) {
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const column = this.getColumn(index);
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return column && column.getValue();
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},
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// set column value by index
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setColumnValue(index, value) {
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const column = this.getColumn(index);
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if (column == null) {
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return Promise.reject(new Error('setColumnValue: 对应列不存在'));
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}
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return column.setValue(value);
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},
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// get column option index by column index
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getColumnIndex(columnIndex) {
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return (this.getColumn(columnIndex) || {}).data.currentIndex;
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},
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// set column option index by column index
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setColumnIndex(columnIndex, optionIndex) {
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const column = this.getColumn(columnIndex);
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if (column == null) {
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return Promise.reject(new Error('setColumnIndex: 对应列不存在'));
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}
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return column.setIndex(optionIndex);
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},
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// get options of column by index
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getColumnValues(index) {
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return (this.children[index] || {}).data.options;
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},
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// set options of column by index
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setColumnValues(index, options, needReset = true) {
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const column = this.children[index];
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if (column == null) {
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return Promise.reject(new Error('setColumnValues: 对应列不存在'));
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}
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const isSame = JSON.stringify(column.data.options) === JSON.stringify(options);
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if (isSame) {
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return Promise.resolve();
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}
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return column.set({ options }).then(() => {
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if (needReset) {
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column.setIndex(0);
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}
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});
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},
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// get values of all columns
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getValues() {
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return this.children.map((child) => child.getValue());
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},
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// set values of all columns
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setValues(values) {
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const stack = values.map((value, index) => this.setColumnValue(index, value));
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return Promise.all(stack);
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},
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// get indexes of all columns
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getIndexes() {
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return this.children.map((child) => child.data.currentIndex);
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},
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// set indexes of all columns
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setIndexes(indexes) {
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const stack = indexes.map((optionIndex, columnIndex) => this.setColumnIndex(columnIndex, optionIndex));
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return Promise.all(stack);
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},
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},
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});
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export default global['__wxComponents']['vant/dist/picker/index']
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</script>
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<style platform="mp-weixin">
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@import '../common/index.css';.van-picker{-webkit-text-size-adjust:100%;background-color:var(--picker-background-color,#fff);overflow:hidden;position:relative;-webkit-user-select:none;user-select:none}.van-picker__toolbar{display:flex;height:var(--picker-toolbar-height,44px);justify-content:space-between;line-height:var(--picker-toolbar-height,44px)}.van-picker__cancel,.van-picker__confirm{font-size:var(--picker-action-font-size,14px);padding:var(--picker-action-padding,0 16px)}.van-picker__cancel--hover,.van-picker__confirm--hover{opacity:.7}.van-picker__confirm{color:var(--picker-confirm-action-color,#576b95)}.van-picker__cancel{color:var(--picker-cancel-action-color,#969799)}.van-picker__title{font-size:var(--picker-option-font-size,16px);font-weight:var(--font-weight-bold,500);max-width:50%;text-align:center}.van-picker__columns{display:flex;position:relative}.van-picker__column{flex:1 1;width:0}.van-picker__loading{align-items:center;background-color:var(--picker-loading-mask-color,hsla(0,0%,100%,.9));bottom:0;display:flex;justify-content:center;left:0;position:absolute;right:0;top:0;z-index:4}.van-picker__mask{-webkit-backface-visibility:hidden;backface-visibility:hidden;background-image:linear-gradient(180deg,hsla(0,0%,100%,.9),hsla(0,0%,100%,.4)),linear-gradient(0deg,hsla(0,0%,100%,.9),hsla(0,0%,100%,.4));background-position:top,bottom;background-repeat:no-repeat;height:100%;left:0;top:0;width:100%;z-index:2}.van-picker__frame,.van-picker__mask{pointer-events:none;position:absolute}.van-picker__frame{left:16px;right:16px;top:50%;transform:translateY(-50%);z-index:1}
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</style> |