下拉选择框，允许插入额外按钮

Tevin

2021-11-14 70a71c5adb35d9c2b06669319b802ae18606c388

 forms/select/CSelect.vue

@@ -5,30 +5,60 @@

<template>
    <view class="c-select">
        <picker
            mode="selector"
            :range="options"
            :value="current"
            range-key="name"
            @change="evt=>handleChange(evt.detail)"
        <!-- 下拉选择模式 -->
        <view
            v-if="!selectByPage"
            class="c-select-slot-mode"
        >
            <picker
                class="c-select-input"
                mode="selector"
                :range="options"
                :value="current"
                range-key="name"
                @change="evt=>handleChange(evt.detail)"
            >
                <AtInput
                    ref="input"
                    :name="itemRes.name"
                    :title="itemRes.label"
                    :required="itemRes.required"
                    :disabled="itemRes.disabled"
                    :error="itemRes.error"
                    :placeholder="placeholder"
                    :value="selected"
                >
                    <view class="at-icon at-icon-chevron-right" />
                </AtInput>
            </picker>
            <view class="c-select-slot">
                <slot />
            </view>
        </view>
        <!-- 跳转页面模式 -->
        <view
            v-else-if="selectByPage.length > 5"
            @tap="evt => onGoToSelectorPage()"
        >
            <AtInput
                ref="input"
                :name="itemData.name"
                :title="itemData.label"
                :required="itemData.required"
                :error="itemData.error"
                :name="itemRes.name"
                :title="itemRes.label"
                :required="itemRes.required"
                :disabled="itemRes.disabled"
                :error="itemRes.error"
                :placeholder="placeholder"
                :value="selected"
                :value="choose.name"
            >
                <view class="at-icon at-icon-chevron-right" />
            </AtInput>
        </picker>
        </view>
    </view>
</template>

<script>
import Taro from '@tarojs/taro';
import { AtInput } from 'taro-ui-vue';
import { $pagePoster } from '@components/common/PagePoster';
import './cSelect.scss';

export default {
@@ -37,19 +67,31 @@
        AtInput,
    },
    props: {
        // 表单数据资源（表单组件内部机制专用）
        itemRes: Object,
        // 选择菜单选项（浮窗模式）
        options: Array,
        // 占位提示
        placeholder: String,
        itemData: Object,
        // 开启选择菜单跳转选择页面模式，并指定功能页面
        selectByPage: String,
        // 页面模式下，选择完成后的回调
        onSelectFromPage: Function,
    },
    data() {
        return {};
        return {
            choose: {
                name: '',
                value: null,
            },
        };
    },
    computed: {
        optionKey() {
            return typeof (this.options[0] || {}).value === 'undefined' ? 'id' : 'value';
        },
        current() {
            const curVal = this.itemData.formData[this.itemData.name];
            const curVal = this.itemRes.formData[this.itemRes.name];
            for (let i = 0, item; (item = this.options[i]); i++) {
                if (curVal === item[this.optionKey]) {
                    return i;
@@ -58,7 +100,7 @@
            return -1;
        },
        selected() {
            const curVal = this.itemData.formData[this.itemData.name];
            const curVal = this.itemRes.formData[this.itemRes.name];
            for (let i = 0, item; (item = this.options[i]); i++) {
                if (curVal === item[this.optionKey]) {
                    return item.name;
@@ -70,9 +112,31 @@
    methods: {
        handleChange(evt) {
            const item = this.options[evt.value];
            this.itemData.onChange(item[this.optionKey]);
            this.itemRes.onChange(item[this.optionKey]);
        },
        onGoToSelectorPage() {
            let url = this.selectByPage;
            if (this.selectByPage.indexOf('?') > 0) {
                url += '&mode=CSelect';
            } else {
                url += '?mode=CSelect';
            }
            if (this._eventor) {
                // 销毁上次事件收发器
                this._eventor.destroy();
            }
            this._eventor = $pagePoster.createEventor();
            this._eventor.on('@linked', () => {
                this._eventor.emit('lastValue', this.choose.value);
            });
            this._eventor.on('selected', data => {
                this.choose.name = data.name;
                this.choose.value = data.value;
                this.itemRes.onChange(data.value);
                this.onSelectFromPage && this.onSelectFromPage(data.value);
            });
            Taro.navigateTo({ url: url + '&eventorId=' + this._eventor.id });
        },
    },
    mounted() {},
};
</script>