前端代码
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liumengyu
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<template>
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<div class="top-right-btn" :style="style">
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<el-row>
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<el-tooltip class="item" effect="dark" :content="showSearch ? '隐藏搜索' : '显示搜索'" placement="top" v-if="search">
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<el-button size="mini" circle icon="el-icon-search" @click="toggleSearch()" />
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</el-tooltip>
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<el-tooltip class="item" effect="dark" content="刷新" placement="top">
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<el-button size="mini" circle icon="el-icon-refresh" @click="refresh()" />
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</el-tooltip>
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<el-tooltip class="item" effect="dark" content="显隐列" placement="top" v-if="Object.keys(columns).length > 0">
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<el-button size="mini" circle icon="el-icon-menu" @click="showColumn()" v-if="showColumnsType == 'transfer'"/>
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<el-dropdown trigger="click" :hide-on-click="false" style="padding-left: 12px" v-if="showColumnsType == 'checkbox'">
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<el-button size="mini" circle icon="el-icon-menu" />
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<el-dropdown-menu slot="dropdown">
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<!-- 全选/反选 按钮 -->
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<el-dropdown-item>
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<el-checkbox :indeterminate="isIndeterminate" v-model="isChecked" @change="toggleCheckAll"> 列展示 </el-checkbox>
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</el-dropdown-item>
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<div class="check-line"></div>
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<template v-for="(item, key) in columns">
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<el-dropdown-item :key="key">
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<el-checkbox v-model="item.visible" @change="checkboxChange($event, key)" :label="item.label" />
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</el-dropdown-item>
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</template>
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</el-dropdown-menu>
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</el-dropdown>
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</el-tooltip>
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</el-row>
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<el-dialog :title="title" :visible.sync="open" append-to-body>
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<el-transfer
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:titles="['显示', '隐藏']"
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v-model="value"
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:data="transferData"
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@change="dataChange"
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></el-transfer>
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</el-dialog>
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</div>
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</template>
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<script>
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import cache from '@/plugins/cache'
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export default {
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name: "RightToolbar",
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data() {
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return {
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// 显隐数据
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value: [],
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// 弹出层标题
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title: "显示/隐藏",
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// 是否显示弹出层
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open: false
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}
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},
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props: {
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/* 是否显示检索条件 */
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showSearch: {
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type: Boolean,
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default: true
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},
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/* 显隐列信息（数组格式、对象格式） */
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columns: {
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type: [Array, Object],
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default: () => ({})
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},
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/* 是否显示检索图标 */
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search: {
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type: Boolean,
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default: true
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},
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/* 显隐列类型（transfer穿梭框、checkbox复选框） */
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showColumnsType: {
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type: String,
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default: "checkbox"
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},
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/* 右外边距 */
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gutter: {
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type: Number,
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default: 10
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},
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/* 列显隐状态记忆的 localStorage key（传入则启用记忆，不传则不记忆） */
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storageKey: {
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type: String,
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default: ""
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}
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},
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computed: {
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style() {
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const ret = {}
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if (this.gutter) {
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ret.marginRight = `${this.gutter / 2}px`
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}
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return ret
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},
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isChecked: {
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get() {
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return Array.isArray(this.columns) ? this.columns.every((col) => col.visible) : Object.values(this.columns).every((col) => col.visible)
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},
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set() {}
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},
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isIndeterminate() {
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return Array.isArray(this.columns) ? this.columns.some((col) => col.visible) && !this.isChecked : Object.values(this.columns).some((col) => col.visible) && !this.isChecked
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},
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transferData() {
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if (Array.isArray(this.columns)) {
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return this.columns.map((item, index) => ({ key: index, label: item.label }))
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} else {
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return Object.keys(this.columns).map((key, index) => ({ key: index, label: this.columns[key].label }))
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}
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}
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},
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created() {
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// 如果传入了 storageKey，从 localStorage 恢复列显隐状态
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if (this.storageKey) {
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try {
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const saved = cache.local.getJSON(this.storageKey)
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if (saved && typeof saved === 'object') {
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if (Array.isArray(this.columns)) {
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this.columns.forEach((col, index) => {
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if (saved[index] !== undefined) col.visible = saved[index]
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})
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} else {
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Object.keys(this.columns).forEach(key => {
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if (saved[key] !== undefined) this.columns[key].visible = saved[key]
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})
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}
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}
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} catch (e) {}
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}
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if (this.showColumnsType == 'transfer') {
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// transfer穿梭显隐列初始默认隐藏列
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if (Array.isArray(this.columns)) {
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for (let item in this.columns) {
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if (this.columns[item].visible === false) {
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this.value.push(parseInt(item))
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}
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}
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} else {
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Object.keys(this.columns).forEach((key, index) => {
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if (this.columns[key].visible === false) {
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this.value.push(index)
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}
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})
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}
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}
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},
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methods: {
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// 搜索
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toggleSearch() {
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let el = this.$el
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let formEl = null
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while ((el = el.parentElement) && el !== document.body) {
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if ((formEl = el.querySelector('.el-form'))) break
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}
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if (!formEl) return this.$emit('update:showSearch', !this.showSearch)
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this._animateSearch(formEl, this.showSearch)
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},
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// 搜索栏动画
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_animateSearch(el, isHide) {
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const DURATION = 260
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const TRANSITION = 'max-height 0.25s ease, opacity 0.2s ease'
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const clear = () => Object.assign(el.style, { transition: '', maxHeight: '', opacity: '', overflow: '' })
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Object.assign(el.style, { overflow: 'hidden', transition: '' })
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if (isHide) {
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Object.assign(el.style, { maxHeight: el.scrollHeight + 'px', opacity: '1', transition: TRANSITION })
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requestAnimationFrame(() => Object.assign(el.style, { maxHeight: '0', opacity: '0' }))
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setTimeout(() => { this.$emit('update:showSearch', false); clear() }, DURATION)
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} else {
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this.$emit('update:showSearch', true)
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this.$nextTick(() => {
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Object.assign(el.style, { maxHeight: '0', opacity: '0' })
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requestAnimationFrame(() => requestAnimationFrame(() => {
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Object.assign(el.style, { transition: TRANSITION, maxHeight: el.scrollHeight + 'px', opacity: '1' })
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}))
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setTimeout(clear, DURATION)
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})
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}
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},
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// 刷新
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refresh() {
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this.$emit("queryTable")
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},
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// 右侧列表元素变化
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dataChange(data) {
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if (Array.isArray(this.columns)) {
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for (let item in this.columns) {
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const key = this.columns[item].key
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this.columns[item].visible = !data.includes(key)
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}
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} else {
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Object.keys(this.columns).forEach((key, index) => {
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this.columns[key].visible = !data.includes(index)
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})
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}
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this.saveStorage()
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},
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// 打开显隐列dialog
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showColumn() {
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this.open = true
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},
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// 单勾选
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checkboxChange(event, key) {
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if (Array.isArray(this.columns)) {
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this.columns.filter(item => item.key == key)[0].visible = event
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} else {
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this.columns[key].visible = event
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}
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this.saveStorage()
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},
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// 切换全选/反选
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toggleCheckAll() {
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const newValue = !this.isChecked
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if (Array.isArray(this.columns)) {
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this.columns.forEach((col) => (col.visible = newValue))
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} else {
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Object.values(this.columns).forEach((col) => (col.visible = newValue))
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}
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this.saveStorage()
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},
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// 将当前列显隐状态持久化到 localStorage
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saveStorage() {
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if (!this.storageKey) return
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try {
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let state = {}
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if (Array.isArray(this.columns)) {
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this.columns.forEach((col, index) => { state[index] = col.visible })
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} else {
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Object.keys(this.columns).forEach(key => { state[key] = this.columns[key].visible })
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}
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cache.local.setJSON(this.storageKey, state)
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} catch (e) {}
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}
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},
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}
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</script>
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<style lang="scss" scoped>
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::v-deep .el-transfer__button {
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border-radius: 50%;
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padding: 12px;
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display: block;
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margin-left: 0px;
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}
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::v-deep .el-transfer__button:first-child {
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margin-bottom: 10px;
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}
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.check-line {
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width: 90%;
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height: 1px;
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background-color: #ccc;
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margin: 3px auto;
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}
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</style>
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