<template>
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<div class="icon-selector w100 h100">
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<el-popover
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placement="bottom"
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:width="fontIconWidth"
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trigger="click"
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transition="el-zoom-in-top"
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popper-class="icon-selector-popper"
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@show="onPopoverShow"
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>
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<template #reference>
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<el-input
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v-model="fontIconSearch"
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:placeholder="fontIconPlaceholder"
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:clearable="clearable"
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:disabled="disabled"
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:size="size"
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ref="inputWidthRef"
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@clear="onClearFontIcon"
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@focus="onIconFocus"
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@blur="onIconBlur"
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>
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<template #prepend>
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<SvgIcon
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:name="fontIconPrefix === '' ? prepend : fontIconPrefix"
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class="font14"
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v-if="fontIconPrefix === '' ? prepend?.indexOf('ele-') > -1 : fontIconPrefix?.indexOf('ele-') > -1"
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/>
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<i v-else :class="fontIconPrefix === '' ? prepend : fontIconPrefix" class="font14"></i>
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</template>
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</el-input>
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</template>
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<template #default>
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<div class="icon-selector-warp">
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<div class="icon-selector-warp-title flex">
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<div class="flex-auto">{{ title }}</div>
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<div class="icon-selector-warp-title-tab" v-if="type === 'all'">
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<span :class="{ 'span-active': fontIconType === 'ali' }" @click="onIconChange('ali')" class="ml10" title="iconfont 图标">ali</span>
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<span :class="{ 'span-active': fontIconType === 'ele' }" @click="onIconChange('ele')" class="ml10" title="elementPlus 图标">ele</span>
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<span :class="{ 'span-active': fontIconType === 'awe' }" @click="onIconChange('awe')" class="ml10" title="fontawesome 图标">awe</span>
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</div>
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</div>
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<div class="icon-selector-warp-row">
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<el-scrollbar ref="selectorScrollbarRef">
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<el-row :gutter="10" v-if="fontIconSheetsFilterList.length > 0">
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<el-col :xs="6" :sm="4" :md="4" :lg="4" :xl="4" @click="onColClick(v)" v-for="(v, k) in fontIconSheetsFilterList" :key="k">
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<div class="icon-selector-warp-item" :class="{ 'icon-selector-active': fontIconPrefix === v }">
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<div class="flex-margin">
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<div class="icon-selector-warp-item-value">
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<SvgIcon :name="v" />
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</div>
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</div>
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</div>
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</el-col>
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</el-row>
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<el-empty :image-size="100" v-if="fontIconSheetsFilterList.length <= 0" :description="emptyDescription"></el-empty>
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</el-scrollbar>
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</div>
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</div>
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</template>
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</el-popover>
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</div>
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</template>
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<script lang="ts">
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import { ref, toRefs, reactive, onMounted, nextTick, computed, watch, defineComponent } from 'vue';
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import initIconfont from '/@/utils/getStyleSheets';
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export default defineComponent({
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name: 'iconSelector',
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emits: ['update:modelValue', 'get', 'clear'],
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props: {
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// 输入框前置内容
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prepend: {
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type: String,
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default: () => 'ele-Pointer',
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},
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// 输入框占位文本
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placeholder: {
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type: String,
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default: () => '请输入内容搜索图标或者选择图标',
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},
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// 输入框占位文本
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size: {
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type: String,
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default: () => 'default',
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},
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// 弹窗标题
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title: {
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type: String,
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default: () => '请选择图标',
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},
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// icon 图标类型
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type: {
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type: String,
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default: () => 'ele',
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},
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// 禁用
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disabled: {
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type: Boolean,
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default: () => false,
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},
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// 是否可清空
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clearable: {
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type: Boolean,
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default: () => true,
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},
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// 自定义空状态描述文字
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emptyDescription: {
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type: String,
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default: () => '无相关图标',
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},
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// 双向绑定值，默认为 modelValue，
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// 参考：https://v3.cn.vuejs.org/guide/migration/v-model.html#%E8%BF%81%E7%A7%BB%E7%AD%96%E7%95%A5
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// 参考：https://v3.cn.vuejs.org/guide/component-custom-events.html#%E5%A4%9A%E4%B8%AA-v-model-%E7%BB%91%E5%AE%9A
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modelValue: String,
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},
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setup(props, { emit }) {
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const inputWidthRef = ref();
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const selectorScrollbarRef = ref();
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const state = reactive({
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fontIconPrefix: '',
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fontIconWidth: 0,
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fontIconSearch: '',
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fontIconTabsIndex: 0,
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fontIconSheetsList: [],
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fontIconPlaceholder: '',
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fontIconType: 'ali',
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fontIconShow: true,
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});
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// 处理 input 获取焦点时，modelValue 有值时，改变 input 的 placeholder 值
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const onIconFocus = () => {
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if (!props.modelValue) return false;
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state.fontIconSearch = '';
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state.fontIconPlaceholder = props.modelValue;
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};
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// 处理 input 失去焦点时，为空将清空 input 值，为点击选中图标时，将取原先值
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const onIconBlur = () => {
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setTimeout(() => {
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const icon = state.fontIconSheetsList.filter((icon: string) => icon === state.fontIconSearch);
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if (icon.length <= 0) state.fontIconSearch = '';
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}, 300);
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};
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// 处理 icon 双向绑定数值回显
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const initModeValueEcho = () => {
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if (props.modelValue === '') return ((<string | undefined>state.fontIconPlaceholder) = props.placeholder);
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(<string | undefined>state.fontIconPlaceholder) = props.modelValue;
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(<string | undefined>state.fontIconPrefix) = props.modelValue;
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};
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// 处理 icon type 类型为 all 时，类型 ali、ele、awe 回显问题
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const initFontIconTypeEcho = () => {
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if ((<any>props.modelValue)?.indexOf('iconfont') > -1) onIconChange('ali');
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else if ((<any>props.modelValue)?.indexOf('ele-') > -1) onIconChange('ele');
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else if ((<any>props.modelValue)?.indexOf('fa') > -1) onIconChange('awe');
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else onIconChange('ali');
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};
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// 图标搜索及图标数据显示
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const fontIconSheetsFilterList = computed(() => {
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if (!state.fontIconSearch) return state.fontIconSheetsList;
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let search = state.fontIconSearch.trim().toLowerCase();
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return state.fontIconSheetsList.filter((item: any) => {
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if (item.toLowerCase().indexOf(search) !== -1) return item;
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});
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});
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// 获取 input 的宽度
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const getInputWidth = () => {
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nextTick(() => {
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state.fontIconWidth = inputWidthRef.value.$el.offsetWidth;
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});
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};
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// 监听页面宽度改变
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const initResize = () => {
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window.addEventListener('resize', () => {
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getInputWidth();
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});
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};
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// 初始化数据
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const initFontIconData = async (type: string) => {
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state.fontIconSheetsList = [];
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if (type === 'ali') {
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await initIconfont.ali().then((res: any) => {
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// 阿里字体图标使用 `iconfont xxx`
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state.fontIconSheetsList = res.map((i: string) => `iconfont ${i}`);
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});
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} else if (type === 'ele') {
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await initIconfont.ele().then((res: any) => {
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state.fontIconSheetsList = res;
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});
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} else if (type === 'awe') {
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await initIconfont.awe().then((res: any) => {
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// fontawesome字体图标使用 `fa xxx`
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state.fontIconSheetsList = res.map((i: string) => `fa ${i}`);
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});
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}
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// 初始化 input 的 placeholder
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// 参考（单项数据流）：https://cn.vuejs.org/v2/guide/components-props.html?#%E5%8D%95%E5%90%91%E6%95%B0%E6%8D%AE%E6%B5%81
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state.fontIconPlaceholder = props.placeholder;
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// 初始化双向绑定回显
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initModeValueEcho();
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};
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// 图标点击切换
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const onIconChange = (type: string) => {
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state.fontIconType = type;
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initFontIconData(type);
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};
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// 获取当前点击的 icon 图标
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const onColClick = (v: any) => {
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state.fontIconPlaceholder = v;
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state.fontIconPrefix = v;
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emit('get', state.fontIconPrefix);
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emit('update:modelValue', state.fontIconPrefix);
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};
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// 清空当前点击的 icon 图标
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const onClearFontIcon = () => {
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state.fontIconPrefix = '';
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emit('clear', state.fontIconPrefix);
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emit('update:modelValue', state.fontIconPrefix);
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};
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// 监听 Popover 打开，用于双向绑定值回显
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const onPopoverShow = () => {
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initModeValueEcho();
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initFontIconTypeEcho();
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};
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// 页面加载时
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onMounted(() => {
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initModeValueEcho();
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initResize();
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getInputWidth();
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});
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// 监听双向绑定 modelValue 的变化
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watch(
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() => props.modelValue,
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() => {
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initModeValueEcho();
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}
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);
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return {
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inputWidthRef,
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selectorScrollbarRef,
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fontIconSheetsFilterList,
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onColClick,
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onIconChange,
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onClearFontIcon,
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onIconFocus,
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onIconBlur,
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onPopoverShow,
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...toRefs(state),
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};
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},
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});
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</script>
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