mirror of
https://gitee.com/ShopeX/OMS
synced 2026-03-30 21:15:34 +08:00
298 lines
8.1 KiB
JavaScript
298 lines
8.1 KiB
JavaScript
/**
|
||
* Shopex OMS
|
||
*
|
||
* Copyright (c) 2025 Shopex (http://www.shopex.cn)
|
||
* Licensed under Apache-2.0 with additional terms (See LICENSE file)
|
||
*/
|
||
|
||
/**
|
||
* 自定义 Select 组件
|
||
*/
|
||
class CustomSelect {
|
||
// 静态属性：存储所有实例
|
||
static instances = [];
|
||
static currentOpenInstance = null;
|
||
|
||
constructor(element, options = {}) {
|
||
this.element = element;
|
||
this.options = options;
|
||
this.isOpen = false;
|
||
this.selectedValue = '';
|
||
this.selectedText = '';
|
||
|
||
// 将实例添加到全局管理中
|
||
CustomSelect.instances.push(this);
|
||
|
||
this.init();
|
||
}
|
||
|
||
init() {
|
||
this.createCustomSelect();
|
||
this.bindEvents();
|
||
this.setInitialValue();
|
||
}
|
||
|
||
createCustomSelect() {
|
||
// 隐藏原始select
|
||
this.element.style.display = 'none';
|
||
|
||
// 创建自定义select容器
|
||
this.customSelect = document.createElement('div');
|
||
this.customSelect.className = 'custom-select';
|
||
|
||
// 创建触发器
|
||
this.trigger = document.createElement('div');
|
||
this.trigger.className = 'custom-select-trigger';
|
||
|
||
this.valueElement = document.createElement('span');
|
||
this.valueElement.className = 'custom-select-value';
|
||
|
||
this.arrow = document.createElement('img');
|
||
this.arrow.className = 'custom-select-arrow';
|
||
this.arrow.src = './icon-arrow-down.png';
|
||
|
||
this.trigger.appendChild(this.valueElement);
|
||
this.trigger.appendChild(this.arrow);
|
||
|
||
// 创建下拉列表
|
||
this.dropdown = document.createElement('div');
|
||
this.dropdown.className = 'custom-select-dropdown';
|
||
this.dropdown.style.display = 'none';
|
||
|
||
this.customSelect.appendChild(this.trigger);
|
||
this.customSelect.appendChild(this.dropdown);
|
||
|
||
// 插入到原始select后面
|
||
this.element.parentNode.insertBefore(this.customSelect, this.element.nextSibling);
|
||
|
||
this.updateOptions();
|
||
}
|
||
|
||
updateOptions() {
|
||
this.dropdown.innerHTML = '';
|
||
|
||
Array.from(this.element.options).forEach((option, index) => {
|
||
const optionElement = document.createElement('div');
|
||
optionElement.className = 'custom-select-option';
|
||
optionElement.textContent = option.text;
|
||
optionElement.dataset.value = option.value;
|
||
optionElement.dataset.index = index;
|
||
|
||
if (option.disabled) {
|
||
optionElement.classList.add('disabled');
|
||
}
|
||
|
||
if (option.selected) {
|
||
optionElement.classList.add('selected');
|
||
this.selectedValue = option.value;
|
||
this.selectedText = option.text;
|
||
}
|
||
|
||
this.dropdown.appendChild(optionElement);
|
||
});
|
||
}
|
||
|
||
bindEvents() {
|
||
// 点击触发器
|
||
this.trigger.addEventListener('click', (e) => {
|
||
e.stopPropagation();
|
||
this.toggle();
|
||
});
|
||
|
||
// 点击选项
|
||
this.dropdown.addEventListener('click', (e) => {
|
||
if (e.target.classList.contains('custom-select-option') && !e.target.classList.contains('disabled')) {
|
||
this.selectOption(e.target);
|
||
}
|
||
});
|
||
|
||
// 键盘事件
|
||
this.customSelect.addEventListener('keydown', (e) => {
|
||
this.handleKeydown(e);
|
||
});
|
||
}
|
||
|
||
selectOption(optionElement) {
|
||
const value = optionElement.dataset.value;
|
||
const text = optionElement.textContent;
|
||
const index = parseInt(optionElement.dataset.index);
|
||
|
||
// 更新原始select
|
||
this.element.selectedIndex = index;
|
||
|
||
// 更新显示
|
||
this.selectedValue = value;
|
||
this.selectedText = text;
|
||
this.valueElement.textContent = text;
|
||
this.valueElement.classList.remove('placeholder');
|
||
|
||
// 更新选中状态
|
||
this.dropdown.querySelectorAll('.custom-select-option').forEach(opt => {
|
||
opt.classList.remove('selected');
|
||
});
|
||
optionElement.classList.add('selected');
|
||
|
||
// 触发change事件
|
||
const event = new Event('change', { bubbles: true });
|
||
this.element.dispatchEvent(event);
|
||
|
||
this.close();
|
||
}
|
||
|
||
setInitialValue() {
|
||
const selectedOption = this.element.options[this.element.selectedIndex];
|
||
if (selectedOption) {
|
||
this.selectedValue = selectedOption.value;
|
||
this.selectedText = selectedOption.text;
|
||
this.valueElement.textContent = selectedOption.text;
|
||
} else {
|
||
this.valueElement.textContent = this.options.placeholder || '请选择';
|
||
this.valueElement.classList.add('placeholder');
|
||
}
|
||
}
|
||
|
||
toggle() {
|
||
if (this.isOpen) {
|
||
this.close();
|
||
} else {
|
||
this.open();
|
||
}
|
||
}
|
||
|
||
open() {
|
||
// 关闭其他所有打开的select
|
||
CustomSelect.closeAll();
|
||
|
||
this.isOpen = true;
|
||
CustomSelect.currentOpenInstance = this;
|
||
this.dropdown.style.display = 'block';
|
||
this.trigger.classList.add('active');
|
||
this.arrow.classList.add('open');
|
||
|
||
// 滚动到选中项
|
||
const selectedOption = this.dropdown.querySelector('.custom-select-option.selected');
|
||
if (selectedOption) {
|
||
selectedOption.scrollIntoView({ block: 'nearest' });
|
||
}
|
||
}
|
||
|
||
close() {
|
||
this.isOpen = false;
|
||
if (CustomSelect.currentOpenInstance === this) {
|
||
CustomSelect.currentOpenInstance = null;
|
||
}
|
||
this.dropdown.style.display = 'none';
|
||
this.trigger.classList.remove('active');
|
||
this.arrow.classList.remove('open');
|
||
}
|
||
|
||
// 静态方法：关闭所有打开的select
|
||
static closeAll() {
|
||
CustomSelect.instances.forEach(instance => {
|
||
if (instance.isOpen) {
|
||
instance.close();
|
||
}
|
||
});
|
||
}
|
||
|
||
handleKeydown(e) {
|
||
if (!this.isOpen) {
|
||
if (e.key === 'Enter' || e.key === ' ' || e.key === 'ArrowDown') {
|
||
e.preventDefault();
|
||
this.open();
|
||
}
|
||
return;
|
||
}
|
||
|
||
const options = Array.from(this.dropdown.querySelectorAll('.custom-select-option:not(.disabled)'));
|
||
const currentIndex = options.findIndex(opt => opt.classList.contains('selected'));
|
||
|
||
switch (e.key) {
|
||
case 'ArrowDown':
|
||
e.preventDefault();
|
||
const nextIndex = currentIndex < options.length - 1 ? currentIndex + 1 : 0;
|
||
this.selectOption(options[nextIndex]);
|
||
break;
|
||
case 'ArrowUp':
|
||
e.preventDefault();
|
||
const prevIndex = currentIndex > 0 ? currentIndex - 1 : options.length - 1;
|
||
this.selectOption(options[prevIndex]);
|
||
break;
|
||
case 'Enter':
|
||
e.preventDefault();
|
||
if (currentIndex >= 0) {
|
||
this.selectOption(options[currentIndex]);
|
||
}
|
||
break;
|
||
case 'Escape':
|
||
e.preventDefault();
|
||
this.close();
|
||
break;
|
||
}
|
||
}
|
||
|
||
// 销毁组件
|
||
destroy() {
|
||
// 从全局实例列表中移除
|
||
const index = CustomSelect.instances.indexOf(this);
|
||
if (index > -1) {
|
||
CustomSelect.instances.splice(index, 1);
|
||
}
|
||
|
||
if (CustomSelect.currentOpenInstance === this) {
|
||
CustomSelect.currentOpenInstance = null;
|
||
}
|
||
|
||
if (this.customSelect && this.customSelect.parentNode) {
|
||
this.customSelect.parentNode.removeChild(this.customSelect);
|
||
}
|
||
this.element.style.display = '';
|
||
}
|
||
|
||
// 设置值
|
||
setValue(value) {
|
||
const option = Array.from(this.element.options).find(opt => opt.value === value);
|
||
if (option) {
|
||
this.element.selectedIndex = option.index;
|
||
this.selectedValue = option.value;
|
||
this.selectedText = option.text;
|
||
this.valueElement.textContent = option.text;
|
||
this.valueElement.classList.remove('placeholder');
|
||
|
||
// 更新选中状态
|
||
this.dropdown.querySelectorAll('.custom-select-option').forEach(opt => {
|
||
opt.classList.remove('selected');
|
||
});
|
||
this.dropdown.querySelector(`[data-value="${value}"]`).classList.add('selected');
|
||
}
|
||
}
|
||
|
||
// 获取值
|
||
getValue() {
|
||
return this.selectedValue;
|
||
}
|
||
}
|
||
|
||
// 初始化所有自定义select
|
||
function initCustomSelects() {
|
||
const selects = document.querySelectorAll('select');
|
||
selects.forEach(select => {
|
||
if (!select.dataset.customized) {
|
||
new CustomSelect(select);
|
||
select.dataset.customized = 'true';
|
||
}
|
||
});
|
||
}
|
||
|
||
// 全局点击事件：关闭所有打开的select
|
||
document.addEventListener('click', (e) => {
|
||
// 检查点击是否在任何custom-select内部
|
||
const isInsideCustomSelect = e.target.closest('.custom-select');
|
||
if (!isInsideCustomSelect) {
|
||
CustomSelect.closeAll();
|
||
}
|
||
});
|
||
|
||
// 导出供全局使用
|
||
window.CustomSelect = CustomSelect;
|
||
window.initCustomSelects = initCustomSelects;
|