<template>
    <view class="van-picker custom-class">
        <!-- parse <template is="toolbar" v-if="toolbarPosition === 'top'" :data="showToolbar, cancelButtonText, title, confirmButtonText"></template> -->
        <block name="toolbar" v-if="toolbarPosition === 'top'">
            <view v-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" @tap="emit">
                    {{ cancelButtonText }}
                </view>
                <view v-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" @tap="emit">
                    {{ confirmButtonText }}
                </view>
            </view>
        </block>
        <view v-if="loading" class="van-picker__loading">
            <loading color="#1989fa" />
        </view>
        <view class="van-picker__columns" :style="'height: ' + itemHeight * visibleItemCount + 'px'" @touchmove.stop.prevent="noop">
            <picker-column
                class="van-picker__column"
                :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"
                @change="onChange($event, { index })"
                v-for="(item, index) in isSimple(columns) ? [columns] : columns"
                :key="index"
            ></picker-column>
            <view class="van-picker__mask" :style="'background-size: 100% ' + (itemHeight * visibleItemCount - itemHeight) / 2 + 'px'" />
            <view class="van-picker__frame van-hairline--top-bottom" :style="'height: ' + itemHeight + 'px'" />
        </view>
        <!-- parse <template is="toolbar" v-if="toolbarPosition === 'bottom'" :data="showToolbar, cancelButtonText, title, confirmButtonText"></template> -->
        <block name="toolbar" v-if="false" v-if="toolbarPosition === 'bottom'">
            <view v-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" @tap="emit">
                    {{ cancelButtonText }}
                </view>
                <view v-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" @tap="emit">
                    {{ confirmButtonText }}
                </view>
            </view>
        </block>
    </view>
</template>
<script module="isSimple" lang="wxs">
function isSimple(columns) {
  return columns.length && !columns[0].values;
}
module.exports = isSimple;
</script>
<script>
'use strict';
import pickerColumn from '../picker-column/index';
import loading from '../loading/index';
var __assign =
    (this && this.__assign) ||
    function () {
        __assign =
            Object.assign ||
            function (t) {
                for (var s, i = 1, n = arguments.length; i < n; i++) {
                    s = arguments[i];
                    for (var p in s) {
                        if (Object.prototype.hasOwnProperty.call(s, p)) {
                            t[p] = s[p];
                        }
                    }
                }
                return t;
            };
        return __assign.apply(this, arguments);
    };
Object.defineProperty(exports, '__esModule', {
    value: true
});
var component_1 = require('../common/component');
var shared_1 = require('./shared');
component_1.VantComponent({
    classes: ['active-class', 'toolbar-class', 'column-class'],
    props: __assign(__assign({}, shared_1.pickerProps), {
        valueKey: {
            type: String,
            value: 'text'
        },
        toolbarPosition: {
            type: String,
            value: 'top'
        },
        defaultIndex: {
            type: Number,
            value: 0
        },
        columns: {
            type: Array,
            value: [],
            observer: function (columns) {
                if (columns === void 0) {
                    columns = [];
                }
                this.simple = columns.length && !columns[0].values;
                this.children = this.zpSelectAllComponents('.van-picker__column');
                if (Array.isArray(this.children) && this.children.length) {
                    this.setColumns().catch(function () {});
                }
            }
        }
    }),
    beforeCreate: function () {
        this.children = [];
    },
    methods: {
        noop: function () {},
        setColumns: function () {
            var that = this;
            var data = this;
            var columns = this.simple
                ? [
                      {
                          values: data.columns
                      }
                  ]
                : data.columns;
            var stack = columns.map(function (column, index) {
                return that.setColumnValues(index, column.values);
            });
            return Promise.all(stack);
        },
        emit: function (event) {
            var type = event.currentTarget.dataset.type;
            if (this.simple) {
                this.$emit(type, {
                    value: this.getColumnValue(0),
                    index: this.getColumnIndex(0)
                });
            } else {
                this.$emit(type, {
                    value: this.getValues(),
                    index: this.getIndexes()
                });
            }
        },
        onChange: function (event) {
            if (this.simple) {
                this.$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: function (index) {
            return this.children[index];
        },
        // get column value by index
        getColumnValue: function (index) {
            var column = this.getColumn(index);
            return column && column.getValue();
        },
        // set column value by index
        setColumnValue: function (index, value) {
            var 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: function (columnIndex) {
            return (this.getColumn(columnIndex) || {}).data.currentIndex;
        },
        // set column option index by column index
        setColumnIndex: function (columnIndex, optionIndex) {
            var 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: function (index) {
            return (this.children[index] || {}).data.options;
        },
        // set options of column by index
        setColumnValues: function (index, options, needReset) {
            if (needReset === void 0) {
                needReset = true;
            }
            var column = this.children[index];
            if (column == null) {
                return Promise.reject(new Error('setColumnValues: 对应列不存在'));
            }
            var isSame = JSON.stringify(column.data.options) === JSON.stringify(options);
            if (isSame) {
                return Promise.resolve();
            }
            return column
                .set({
                    options: options
                })
                .then(function () {
                    if (needReset) {
                        column.setIndex(0);
                    }
                });
        },
        // get values of all columns
        getValues: function () {
            return this.children.map(function (child) {
                return child.getValue();
            });
        },
        // set values of all columns
        setValues: function (values) {
            var that = this;
            var stack = values.map(function (value, index) {
                return that.setColumnValue(index, value);
            });
            return Promise.all(stack);
        },
        // get indexes of all columns
        getIndexes: function () {
            return this.children.map(function (child) {
                return child.data.currentIndex;
            });
        },
        // set indexes of all columns
        setIndexes: function (indexes) {
            var that = this;
            var stack = indexes.map(function (optionIndex, columnIndex) {
                return that.setColumnIndex(columnIndex, optionIndex);
            });
            return Promise.all(stack);
        }
    }
});
</script>
<style>
@import './index.css';
@import 'undefined';
</style>
