mirror of
https://gitee.com/ShopeX/OMS
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605 lines
17 KiB
JavaScript
605 lines
17 KiB
JavaScript
/**
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* Copyright 2012-2026 ShopeX (https://www.shopex.cn)
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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/**
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* 自定义Select组件 - 兼容微信小程序端
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* 通用版本，适用于整个项目
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* 解决原生select在微信小程序端的兼容性问题
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*/
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// 性能优化：防抖函数
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function debounce(func, wait) {
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let timeout;
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return function executedFunction(...args) {
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const later = () => {
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clearTimeout(timeout);
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func(...args);
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};
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clearTimeout(timeout);
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timeout = setTimeout(later, wait);
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};
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}
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// 检测环境函数
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function detectEnvironment() {
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const ua = navigator.userAgent.toLowerCase();
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const isWechat = /micromessenger/i.test(ua);
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const isMac = /macintosh|mac os x/i.test(ua);
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const isWindows = /windows/i.test(ua);
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const isMobile = /mobile|android|iphone|ipad|phone/i.test(ua);
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return {
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isWechat: isWechat,
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isMobile: isMobile,
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isIOS: /iphone|ipad|ipod/i.test(ua),
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isAndroid: /android/i.test(ua),
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isMac: isMac,
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isWindows: isWindows,
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// 专门检测Mac版微信小程序
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isMacWechat: isWechat && isMac && !isMobile,
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// 检测Windows版微信小程序
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isWindowsWechat: isWechat && isWindows && !isMobile,
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// 检测桌面版微信小程序
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isDesktopWechat: isWechat && !isMobile && (isMac || isWindows)
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};
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}
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// 全局实例管理
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window.customSelectInstances = window.customSelectInstances || [];
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class CustomSelect {
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constructor(element, options = {}) {
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// 验证输入
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if (!element) {
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throw new Error('CustomSelect: element is required');
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}
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this.element = element;
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this.options = {
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placeholder: '请选择',
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searchable: false,
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disabled: false,
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clearable: false,
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maxHeight: '12.5rem',
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onChange: null,
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onOpen: null,
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onClose: null,
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...options
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};
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this.isOpen = false;
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this.selectedValue = '';
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this.selectedText = '';
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this.originalSelect = null;
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this.id = 'custom-select-' + Math.random().toString(36).substr(2, 9);
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// 防抖处理
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this.debouncedClose = debounce(() => this.close(), 100);
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try {
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this.init();
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// 添加到全局实例管理
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window.customSelectInstances.push(this);
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} catch (error) {
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console.error('CustomSelect initialization failed:', error);
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throw error;
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}
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}
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init() {
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// 如果传入的是原生select元素，保存引用并隐藏
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if (this.element.tagName === 'SELECT') {
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this.originalSelect = this.element;
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this.originalSelect.style.display = 'none';
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// 获取原生select的选项
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this.optionsData = Array.from(this.originalSelect.options).map(option => ({
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value: option.value,
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text: option.textContent,
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selected: option.selected,
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disabled: option.disabled
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}));
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// 获取默认选中项
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const selectedOption = this.optionsData.find(opt => opt.selected);
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if (selectedOption) {
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this.selectedValue = selectedOption.value;
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this.selectedText = selectedOption.text;
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}
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// 在原生select后面插入自定义组件
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this.container = this.createCustomSelect();
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// 检查是否在.image-text_2容器中
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const imageTextContainer = this.originalSelect.closest('.image-text_2');
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if (imageTextContainer) {
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// 如果在.image-text_2容器中，直接替换到容器内
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imageTextContainer.appendChild(this.container);
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} else {
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// 否则在原生select后面插入
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this.originalSelect.parentNode.insertBefore(this.container, this.originalSelect.nextSibling);
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}
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} else {
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// 如果传入的是容器元素
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this.container = this.element;
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this.optionsData = this.options.data || [];
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}
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this.bindEvents();
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this.updateDisplay();
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}
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createCustomSelect() {
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const container = document.createElement('div');
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container.className = 'custom-select';
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// 复制原生select的类名和属性
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if (this.originalSelect) {
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const classes = this.originalSelect.className.split(' ').filter(cls => cls !== 'select-box');
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container.className += ' ' + classes.join(' ');
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// 复制name属性
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if (this.originalSelect.name) {
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container.setAttribute('data-name', this.originalSelect.name);
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}
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}
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// 检查是否在.image-text_2容器中，如果是则不显示箭头（使用原有的箭头）
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const isInImageText = this.originalSelect && this.originalSelect.closest('.image-text_2');
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// 获取箭头图标路径
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const arrowSrc = this.getArrowIconPath();
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container.innerHTML = `
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<div class="custom-select-trigger text-group_2">
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<span class="custom-select-text">${this.selectedText || this.options.placeholder}</span>
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${!isInImageText ? `<img class="custom-select-arrow" src="${arrowSrc}" alt="arrow" />` : ''}
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</div>
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<div class="custom-select-mask"></div>
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<div class="custom-select-options">
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${this.renderOptions()}
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</div>
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`;
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return container;
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}
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getArrowIconPath() {
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// 尝试获取正确的箭头图标路径
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const possiblePaths = [
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'./icon-arrow-down.png',
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'../img/icon-arrow-down.png',
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'/app/wap/statics/img/icon-arrow-down.png'
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];
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// 如果页面中已有箭头图标，使用相同路径
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const existingArrow = document.querySelector('.thumbnail_2, img[src*="arrow-down"]');
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if (existingArrow && existingArrow.src) {
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return existingArrow.src;
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}
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return possiblePaths[0]; // 默认使用相对路径
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}
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renderOptions() {
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if (!this.optionsData || this.optionsData.length === 0) {
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return '<div class="custom-select-empty">暂无选项</div>';
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}
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return this.optionsData.map(option => `
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<div class="custom-select-option ${option.selected ? 'selected' : ''}"
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data-value="${option.value}"
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${option.disabled ? 'data-disabled="true"' : ''}>
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${option.text}
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</div>
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`).join('');
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}
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bindEvents() {
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const trigger = this.container.querySelector('.custom-select-trigger');
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const mask = this.container.querySelector('.custom-select-mask');
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const options = this.container.querySelectorAll('.custom-select-option');
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// 点击触发器 - 支持触摸和点击
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const handleTriggerActivation = (e) => {
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e.preventDefault();
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e.stopPropagation();
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this.toggle();
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};
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trigger.addEventListener('click', handleTriggerActivation);
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trigger.addEventListener('touchend', handleTriggerActivation);
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// 防止触摸滚动时意外触发
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trigger.addEventListener('touchstart', (e) => {
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this.touchStartY = e.touches[0].clientY;
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});
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trigger.addEventListener('touchmove', (e) => {
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if (this.touchStartY) {
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const touchMoveY = e.touches[0].clientY;
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const diff = Math.abs(touchMoveY - this.touchStartY);
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if (diff > 10) { // 如果移动超过10px，认为是滚动
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this.isTouchScrolling = true;
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}
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}
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});
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trigger.addEventListener('touchend', (e) => {
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if (this.isTouchScrolling) {
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this.isTouchScrolling = false;
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e.preventDefault();
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return;
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}
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this.touchStartY = null;
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});
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// 点击遮罩关闭
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mask.addEventListener('click', (e) => {
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e.preventDefault();
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e.stopPropagation();
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this.close();
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});
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// 点击选项 - 优化触摸体验
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options.forEach(option => {
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const handleOptionSelect = (e) => {
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e.preventDefault();
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e.stopPropagation();
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if (option.getAttribute('data-disabled') === 'true') {
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return;
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}
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const value = option.getAttribute('data-value');
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const text = option.textContent.trim();
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this.select(value, text);
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};
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// 添加触摸反馈
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option.addEventListener('touchstart', (e) => {
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if (option.getAttribute('data-disabled') !== 'true') {
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option.style.backgroundColor = '#f0f0f0';
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}
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});
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option.addEventListener('touchend', (e) => {
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option.style.backgroundColor = '';
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handleOptionSelect(e);
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});
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option.addEventListener('touchcancel', (e) => {
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option.style.backgroundColor = '';
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});
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option.addEventListener('click', handleOptionSelect);
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});
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// 阻止选项容器的点击事件冒泡
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const optionsContainer = this.container.querySelector('.custom-select-options');
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optionsContainer.addEventListener('click', (e) => {
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e.stopPropagation();
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});
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// 键盘事件支持
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trigger.addEventListener('keydown', (e) => {
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switch (e.key) {
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case 'Enter':
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case ' ':
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e.preventDefault();
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this.toggle();
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break;
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case 'Escape':
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this.close();
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break;
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case 'ArrowDown':
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e.preventDefault();
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if (!this.isOpen) {
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this.open();
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} else {
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this.selectNext();
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}
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break;
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case 'ArrowUp':
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e.preventDefault();
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if (this.isOpen) {
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this.selectPrevious();
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}
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break;
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}
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});
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// 全局点击关闭
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document.addEventListener('click', (e) => {
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if (!this.container.contains(e.target)) {
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this.close();
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}
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});
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}
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toggle() {
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if (this.options.disabled) return;
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if (this.isOpen) {
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this.close();
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} else {
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this.open();
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}
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}
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open() {
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if (this.options.disabled || this.isOpen) return;
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this.isOpen = true;
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this.container.classList.add('open');
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// 触发回调
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if (this.options.onOpen) {
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this.options.onOpen();
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}
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// 滚动到选中项
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this.scrollToSelected();
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}
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close() {
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if (!this.isOpen) return;
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this.isOpen = false;
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this.container.classList.remove('open');
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// 触发回调
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if (this.options.onClose) {
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this.options.onClose();
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}
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}
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select(value, text) {
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const oldValue = this.selectedValue;
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this.selectedValue = value;
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this.selectedText = text;
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// 更新显示
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this.updateDisplay();
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// 更新原生select的值
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if (this.originalSelect) {
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this.originalSelect.value = value;
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// 触发原生select的change事件
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const changeEvent = new Event('change', { bubbles: true });
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this.originalSelect.dispatchEvent(changeEvent);
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}
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// 更新选中状态
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this.updateSelectedState();
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// 关闭下拉框
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this.close();
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// 触发回调
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if (this.options.onChange && oldValue !== value) {
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this.options.onChange(value, text);
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}
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}
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updateDisplay() {
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const textElement = this.container.querySelector('.custom-select-text');
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textElement.textContent = this.selectedText || this.options.placeholder;
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}
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updateSelectedState() {
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const options = this.container.querySelectorAll('.custom-select-option');
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options.forEach(option => {
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const value = option.getAttribute('data-value');
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if (value === this.selectedValue) {
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option.classList.add('selected');
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} else {
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option.classList.remove('selected');
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}
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});
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}
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scrollToSelected() {
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const selectedOption = this.container.querySelector('.custom-select-option.selected');
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if (selectedOption) {
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selectedOption.scrollIntoView({ block: 'nearest' });
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}
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}
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selectNext() {
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const options = Array.from(this.container.querySelectorAll('.custom-select-option:not([data-disabled])'));
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const currentIndex = options.findIndex(opt => opt.classList.contains('selected'));
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const nextIndex = currentIndex < options.length - 1 ? currentIndex + 1 : 0;
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if (options[nextIndex]) {
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const value = options[nextIndex].getAttribute('data-value');
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const text = options[nextIndex].textContent;
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this.select(value, text);
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}
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}
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selectPrevious() {
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const options = Array.from(this.container.querySelectorAll('.custom-select-option:not([data-disabled])'));
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const currentIndex = options.findIndex(opt => opt.classList.contains('selected'));
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const prevIndex = currentIndex > 0 ? currentIndex - 1 : options.length - 1;
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if (options[prevIndex]) {
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const value = options[prevIndex].getAttribute('data-value');
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const text = options[prevIndex].textContent;
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this.select(value, text);
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}
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}
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// 公共方法
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getValue() {
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return this.selectedValue;
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}
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setText(text) {
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this.selectedText = text;
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this.updateDisplay();
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}
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setValue(value) {
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const option = this.optionsData.find(opt => opt.value === value);
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if (option) {
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this.select(value, option.text);
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}
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}
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disable() {
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this.options.disabled = true;
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this.container.classList.add('disabled');
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this.close();
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}
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enable() {
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this.options.disabled = false;
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this.container.classList.remove('disabled');
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}
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destroy() {
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try {
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// 关闭下拉框
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this.close();
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// 移除全局实例引用
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const index = window.customSelectInstances.indexOf(this);
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if (index > -1) {
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window.customSelectInstances.splice(index, 1);
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}
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// 移除DOM元素
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if (this.container && this.container.parentNode) {
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this.container.remove();
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}
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// 显示原生select
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if (this.originalSelect) {
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this.originalSelect.style.display = '';
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}
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// 清理引用
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this.element = null;
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this.container = null;
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this.originalSelect = null;
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this.optionsData = null;
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} catch (error) {
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console.error('CustomSelect destroy failed:', error);
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}
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}
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}
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// 全局初始化函数
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function initCustomSelects(selector = 'select.select-box') {
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const selects = document.querySelectorAll(selector);
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const customSelects = [];
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const errors = [];
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if (selects.length === 0) {
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console.warn('CustomSelect: No select elements found with selector:', selector);
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return customSelects;
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}
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selects.forEach((select, index) => {
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try {
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// 检查是否已经初始化过
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if (select.dataset.customSelectInitialized === 'true') {
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console.warn('CustomSelect: Element already initialized, skipping:', select);
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return;
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}
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const customSelect = new CustomSelect(select, {
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onChange: (value, text) => {
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// 触发自定义事件
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const customEvent = new CustomEvent('customSelectChange', {
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detail: { value, text, element: select },
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bubbles: true
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});
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select.dispatchEvent(customEvent);
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}
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});
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// 标记为已初始化
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select.dataset.customSelectInitialized = 'true';
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customSelects.push(customSelect);
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} catch (error) {
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console.error(`CustomSelect: Failed to initialize select at index ${index}:`, error);
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errors.push({ index, element: select, error });
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}
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});
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if (window.customSelectDebug) {
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console.log(`CustomSelect: Initialized ${customSelects.length} of ${selects.length} selects`);
|
||
if (errors.length > 0) {
|
||
console.warn('CustomSelect: Initialization errors:', errors);
|
||
}
|
||
}
|
||
|
||
return customSelects;
|
||
}
|
||
|
||
// 自动初始化
|
||
document.addEventListener('DOMContentLoaded', () => {
|
||
const env = detectEnvironment();
|
||
|
||
// 专门针对Mac版微信小程序和移动端微信的兼容性问题
|
||
let shouldInitCustomSelect = false;
|
||
let initReason = '';
|
||
|
||
if (env.isMacWechat) {
|
||
shouldInitCustomSelect = true;
|
||
initReason = 'Mac版微信小程序select兼容性问题';
|
||
} else if (env.isWindowsWechat) {
|
||
shouldInitCustomSelect = true;
|
||
initReason = 'Windows版微信小程序select兼容性问题';
|
||
} else if (env.isWechat && env.isMobile) {
|
||
shouldInitCustomSelect = true;
|
||
initReason = '移动端微信select兼容性问题';
|
||
} else if (env.isMobile) {
|
||
shouldInitCustomSelect = true;
|
||
initReason = '移动端浏览器select体验优化';
|
||
}
|
||
|
||
if (shouldInitCustomSelect) {
|
||
initCustomSelects();
|
||
|
||
if (window.customSelectDebug) {
|
||
console.log('CustomSelect 启用原因:', initReason);
|
||
}
|
||
}
|
||
|
||
// 调试信息
|
||
if (window.customSelectDebug) {
|
||
console.log('CustomSelect Environment:', env);
|
||
console.log('CustomSelect 是否启用:', shouldInitCustomSelect);
|
||
console.log('CustomSelect 启用原因:', initReason);
|
||
console.log('CustomSelect Instances:', window.customSelectInstances);
|
||
}
|
||
});
|
||
|
||
// 导出类和初始化函数
|
||
if (typeof module !== 'undefined' && module.exports) {
|
||
module.exports = { CustomSelect, initCustomSelects };
|
||
} else {
|
||
window.CustomSelect = CustomSelect;
|
||
window.initCustomSelects = initCustomSelects;
|
||
}
|