vant

utils/dist/picker/index.d.ts

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+export {};

utils/dist/picker/index.js

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+import { VantComponent } from '../common/component';
+import { pickerProps } from './shared';
+VantComponent({
+    classes: ['active-class', 'toolbar-class', 'column-class'],
+    props: Object.assign(Object.assign({}, pickerProps), { valueKey: {
+            type: String,
+            value: 'text'
+        }, toolbarPosition: {
+            type: String,
+            value: 'top'
+        }, defaultIndex: {
+            type: Number,
+            value: 0
+        }, columns: {
+            type: Array,
+            value: [],
+            observer(columns = []) {
+                this.simple = columns.length && !columns[0].values;
+                this.children = this.selectAllComponents('.van-picker__column');
+                if (Array.isArray(this.children) && this.children.length) {
+                    this.setColumns().catch(() => { });
+                }
+            }
+        } }),
+    beforeCreate() {
+        this.children = [];
+    },
+    methods: {
+        noop() { },
+        setColumns() {
+            const { data } = this;
+            const columns = this.simple ? [{ values: data.columns }] : data.columns;
+            const stack = columns.map((column, index) => this.setColumnValues(index, column.values));
+            return Promise.all(stack);
+        },
+        emit(event) {
+            const { type } = event.currentTarget.dataset;
+            if (this.simple) {
+                this.$emit(type, {
+                    value: this.getColumnValue(0),
+                    index: this.getColumnIndex(0)
+                });
+            }
+            else {
+                this.$emit(type, {
+                    value: this.getValues(),
+                    index: this.getIndexes()
+                });
+            }
+        },
+        onChange(event) {
+            if (this.simple) {
+                this.$emit('change', {
+                    picker: this,
+                    value: this.getColumnValue(0),
+                    index: this.getColumnIndex(0)
+                });
+            }
+            else {
+                this.$emit('change', {
+                    picker: this,
+                    value: this.getValues(),
+                    index: event.currentTarget.dataset.index
+                });
+            }
+        },
+        // get column instance by index
+        getColumn(index) {
+            return this.children[index];
+        },
+        // get column value by index
+        getColumnValue(index) {
+            const column = this.getColumn(index);
+            return column && column.getValue();
+        },
+        // set column value by index
+        setColumnValue(index, value) {
+            const column = this.getColumn(index);
+            if (column == null) {
+                return Promise.reject(new Error('setColumnValue: 对应列不存在'));
+            }
+            return column.setValue(value);
+        },
+        // get column option index by column index
+        getColumnIndex(columnIndex) {
+            return (this.getColumn(columnIndex) || {}).data.currentIndex;
+        },
+        // set column option index by column index
+        setColumnIndex(columnIndex, optionIndex) {
+            const column = this.getColumn(columnIndex);
+            if (column == null) {
+                return Promise.reject(new Error('setColumnIndex: 对应列不存在'));
+            }
+            return column.setIndex(optionIndex);
+        },
+        // get options of column by index
+        getColumnValues(index) {
+            return (this.children[index] || {}).data.options;
+        },
+        // set options of column by index
+        setColumnValues(index, options, needReset = true) {
+            const column = this.children[index];
+            if (column == null) {
+                return Promise.reject(new Error('setColumnValues: 对应列不存在'));
+            }
+            const isSame = JSON.stringify(column.data.options) === JSON.stringify(options);
+            if (isSame) {
+                return Promise.resolve();
+            }
+            return column.set({ options }).then(() => {
+                if (needReset) {
+                    column.setIndex(0);
+                }
+            });
+        },
+        // get values of all columns
+        getValues() {
+            return this.children.map((child) => child.getValue());
+        },
+        // set values of all columns
+        setValues(values) {
+            const stack = values.map((value, index) => this.setColumnValue(index, value));
+            return Promise.all(stack);
+        },
+        // get indexes of all columns
+        getIndexes() {
+            return this.children.map((child) => child.data.currentIndex);
+        },
+        // set indexes of all columns
+        setIndexes(indexes) {
+            const stack = indexes.map((optionIndex, columnIndex) => this.setColumnIndex(columnIndex, optionIndex));
+            return Promise.all(stack);
+        }
+    }
+});

utils/dist/picker/index.json

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+{
+  "component": true,
+  "usingComponents": {
+    "picker-column": "../picker-column/index",
+    "loading": "../loading/index"
+  }
+}

utils/dist/picker/index.wxml

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+<template name="toolbar">
+  <view
+    wx:if="{{ showToolbar }}"
+    class="van-picker__toolbar van-hairline--top-bottom toolbar-class"
+  >
+    <view
+      class="van-picker__cancel"
+      hover-class="van-picker__cancel--hover"
+      hover-stay-time="70"
+      data-type="cancel"
+      bindtap="emit"
+    >
+      {{ cancelButtonText }}
+    </view>
+    <view wx:if="{{ title }}" class="van-picker__title van-ellipsis">{{ title }}</view>
+    <view
+      class="van-picker__confirm"
+      hover-class="van-picker__confirm--hover"
+      hover-stay-time="70"
+      data-type="confirm"
+      bindtap="emit"
+    >
+      {{ confirmButtonText }}
+    </view>
+  </view>
+</template>
+
+<view class="van-picker custom-class">
+  <template is="toolbar" wx:if="{{ toolbarPosition === 'top' }}" data="{{ showToolbar, cancelButtonText, title, confirmButtonText }}"></template>
+  <view wx:if="{{ loading }}" class="van-picker__loading">
+    <loading color="#1989fa"/>
+  </view>
+  <view
+    class="van-picker__columns"
+    style="height: {{ itemHeight * visibleItemCount }}px"
+    catch:touchmove="noop"
+  >
+    <picker-column
+      class="van-picker__column"
+      wx:for="{{ isSimple(columns) ? [columns] : columns }}"
+      wx:key="index"
+      data-index="{{ index }}"
+      custom-class="column-class"
+      value-key="{{ valueKey }}"
+      initial-options="{{ isSimple(columns) ? item : item.values }}"
+      default-index="{{ item.defaultIndex || defaultIndex }}"
+      item-height="{{ itemHeight }}"
+      visible-item-count="{{ visibleItemCount }}"
+      active-class="active-class"
+      bind:change="onChange"
+    />
+    <view
+      class="van-picker__frame van-hairline--top-bottom"
+      style="height: {{ itemHeight }}px"
+    />
+  </view>
+  <template is="toolbar" wx:if="{{ toolbarPosition === 'bottom' }}" data="{{ showToolbar, cancelButtonText, title, confirmButtonText }}"></template>
+</view>
+
+<wxs module="isSimple">
+  function isSimple(columns) {
+    return columns.length && !columns[0].values;
+  }
+  module.exports = isSimple;
+</wxs>

utils/dist/picker/index.wxss

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+@import '../common/index.wxss';.van-picker{position:relative;overflow:hidden;-webkit-text-size-adjust:100%;-webkit-user-select:none;user-select:none;background-color:#fff;background-color:var(--picker-background-color,#fff)}.van-picker__toolbar{display:-webkit-flex;display:flex;-webkit-justify-content:space-between;justify-content:space-between;height:44px;height:var(--picker-toolbar-height,44px);line-height:44px;line-height:var(--picker-toolbar-height,44px)}.van-picker__cancel,.van-picker__confirm{padding:0 16px;padding:var(--picker-action-padding,0 16px);font-size:14px;font-size:var(--picker-action-font-size,14px);color:#1989fa;color:var(--picker-action-text-color,#1989fa)}.van-picker__cancel--hover,.van-picker__confirm--hover{background-color:#f2f3f5;background-color:var(--picker-action-active-color,#f2f3f5)}.van-picker__title{max-width:50%;text-align:center;font-weight:500;font-weight:var(--font-weight-bold,500);font-size:16px;font-size:var(--picker-option-font-size,16px)}.van-picker__columns{position:relative;display:-webkit-flex;display:flex}.van-picker__column{-webkit-flex:1 1;flex:1 1;width:0}.van-picker__loading{position:absolute;top:0;right:0;bottom:0;left:0;z-index:4;display:-webkit-flex;display:flex;-webkit-align-items:center;align-items:center;-webkit-justify-content:center;justify-content:center;background-color:hsla(0,0%,100%,.9);background-color:var(--picker-loading-mask-color,hsla(0,0%,100%,.9))}.van-picker__frame,.van-picker__loading .van-loading{position:absolute;top:50%;left:0;z-index:1;width:100%;-webkit-transform:translateY(-50%);transform:translateY(-50%);pointer-events:none}

utils/dist/picker/shared.d.ts

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+export declare const pickerProps: {
+    title: StringConstructor;
+    loading: BooleanConstructor;
+    showToolbar: BooleanConstructor;
+    cancelButtonText: {
+        type: StringConstructor;
+        value: string;
+    };
+    confirmButtonText: {
+        type: StringConstructor;
+        value: string;
+    };
+    visibleItemCount: {
+        type: NumberConstructor;
+        value: number;
+    };
+    itemHeight: {
+        type: NumberConstructor;
+        value: number;
+    };
+};

utils/dist/picker/shared.js

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+export const pickerProps = {
+    title: String,
+    loading: Boolean,
+    showToolbar: Boolean,
+    cancelButtonText: {
+        type: String,
+        value: '取消'
+    },
+    confirmButtonText: {
+        type: String,
+        value: '确认'
+    },
+    visibleItemCount: {
+        type: Number,
+        value: 5
+    },
+    itemHeight: {
+        type: Number,
+        value: 44
+    }
+};