<template>
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<div class="icon-selector w100 h100">
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<el-input
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v-model="state.fontIconSearch"
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:placeholder="state.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="state.fontIconPrefix === '' ? prepend : state.fontIconPrefix"
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class="font14"
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v-if="state.fontIconPrefix === '' ? prepend?.indexOf('ele-') > -1 : state.fontIconPrefix?.indexOf('ele-') > -1"
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/>
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<i v-else :class="state.fontIconPrefix === '' ? prepend : state.fontIconPrefix" class="font14"></i>
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</template>
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</el-input>
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<el-popover
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placement="bottom"
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:width="state.fontIconWidth"
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transition="el-zoom-in-top"
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popper-class="icon-selector-popper"
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trigger="click"
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:virtual-ref="inputWidthRef"
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virtual-triggering
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>
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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">{{ title }}</div>
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<el-tabs v-model="state.fontIconTabActive" @tab-click="onIconClick">
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<el-tab-pane lazy label="ali" name="ali">
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<IconList :list="fontIconSheetsFilterList" :empty="emptyDescription" :prefix="state.fontIconPrefix" @get-icon="onColClick" />
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</el-tab-pane>
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<el-tab-pane lazy label="ele" name="ele">
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<IconList :list="fontIconSheetsFilterList" :empty="emptyDescription" :prefix="state.fontIconPrefix" @get-icon="onColClick" />
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</el-tab-pane>
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<el-tab-pane lazy label="awe" name="awe">
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<IconList :list="fontIconSheetsFilterList" :empty="emptyDescription" :prefix="state.fontIconPrefix" @get-icon="onColClick" />
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</el-tab-pane>
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</el-tabs>
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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 setup lang="ts" name="iconSelector">
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import { defineAsyncComponent, ref, reactive, onMounted, nextTick, computed, watch } from 'vue';
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import type { TabsPaneContext } from 'element-plus';
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import initIconfont from '/@/utils/getStyleSheets';
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import '/@/theme/iconSelector.scss';
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// 定义父组件传过来的值
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const props = defineProps({
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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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// 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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// 定义子组件向父组件传值/事件
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const emit = defineEmits(['update:modelValue', 'get', 'clear']);
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// 引入组件
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const IconList = defineAsyncComponent(() => import('/@/components/iconSelector/list.vue'));
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// 定义变量内容
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const inputWidthRef = 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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fontIconPlaceholder: '',
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fontIconTabActive: 'ali',
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fontIconList: {
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ali: [],
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ele: [],
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awe: [],
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},
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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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const list = fontIconTabNameList();
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setTimeout(() => {
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const icon = list.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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// 图标搜索及图标数据显示
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const fontIconSheetsFilterList = computed(() => {
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const list = fontIconTabNameList();
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if (!state.fontIconSearch) return list;
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let search = state.fontIconSearch.trim().toLowerCase();
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return list.filter((item: string) => {
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if (item.toLowerCase().indexOf(search) !== -1) return item;
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});
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});
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// 根据 tab name 类型设置图标
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const fontIconTabNameList = () => {
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let iconList: any = [];
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if (state.fontIconTabActive === 'ali') iconList = state.fontIconList.ali;
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else if (state.fontIconTabActive === 'ele') iconList = state.fontIconList.ele;
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else if (state.fontIconTabActive === 'awe') iconList = state.fontIconList.awe;
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return iconList;
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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 类型，用于回显时，tab 高亮与初始化数据
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const initFontIconName = () => {
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let name = 'ali';
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if (props.modelValue!.indexOf('iconfont') > -1) name = 'ali';
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else if (props.modelValue!.indexOf('ele-') > -1) name = 'ele';
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else if (props.modelValue!.indexOf('fa') > -1) name = 'awe';
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// 初始化 tab 高亮回显
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state.fontIconTabActive = name;
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return name;
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};
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// 初始化数据
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const initFontIconData = async (name: string) => {
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if (name === 'ali') {
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// 阿里字体图标使用 `iconfont xxx`
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if (state.fontIconList.ali.length > 0) return;
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await initIconfont.ali().then((res: any) => {
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state.fontIconList.ali = res.map((i: string) => `iconfont ${i}`);
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});
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} else if (name === 'ele') {
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// element plus 图标
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if (state.fontIconList.ele.length > 0) return;
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await initIconfont.ele().then((res: any) => {
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state.fontIconList.ele = res;
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});
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} else if (name === 'awe') {
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// fontawesome字体图标使用 `fa xxx`
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if (state.fontIconList.awe.length > 0) return;
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await initIconfont.awe().then((res: any) => {
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state.fontIconList.awe = 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 onIconClick = (pane: TabsPaneContext) => {
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initFontIconData(pane.paneName as string);
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inputWidthRef.value.focus();
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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: string) => {
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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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inputWidthRef.value.focus();
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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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// 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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// 页面加载时
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onMounted(() => {
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initFontIconData(initFontIconName());
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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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initFontIconName();
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}
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);
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</script>
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