151 lines
5.1 KiB
PHP
151 lines
5.1 KiB
PHP
<?php
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/**
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* Plugin Name: WP Grayscale Memorial
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* Plugin URI: https://example.com/wp-grayscale-memorial
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* Description: 在指定的日期范围内让网站变灰，用于纪念日或哀悼日。过期自动恢复，无需禁用插件。
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* Version: 1.0.0
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* Author: Craft AI
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* Author URI: https://example.com
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* License: GPL-2.0+
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* License URI: http://www.gnu.org/licenses/gpl-2.0.txt
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* Text Domain: wp-grayscale-memorial
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* Domain Path: /languages
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*/
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// 如果直接访问此文件，则退出
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if (!defined('ABSPATH')) {
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exit;
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}
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class WP_Grayscale_Memorial {
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/**
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* 插件初始化
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*/
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public function __construct() {
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// 添加管理菜单
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add_action('admin_menu', array($this, 'add_admin_menu'));
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// 注册设置
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add_action('admin_init', array($this, 'register_settings'));
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// 前端显示灰度效果
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add_action('wp_head', array($this, 'apply_grayscale_effect'));
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// 注册卸载钩子
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register_uninstall_hook(__FILE__, array('WP_Grayscale_Memorial', 'uninstall'));
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}
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/**
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* 添加管理菜单
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*/
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public function add_admin_menu() {
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add_options_page(
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'网站变灰设置',
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'网站变灰设置',
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'manage_options',
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'wp-grayscale-memorial',
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array($this, 'admin_page_display')
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);
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}
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/**
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* 注册插件设置
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*/
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public function register_settings() {
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register_setting('wp_grayscale_memorial_settings', 'wp_grayscale_memorial_start_date');
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register_setting('wp_grayscale_memorial_settings', 'wp_grayscale_memorial_end_date');
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register_setting('wp_grayscale_memorial_settings', 'wp_grayscale_memorial_enabled', array(
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'type' => 'boolean',
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'default' => false,
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));
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}
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/**
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* 显示管理页面
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*/
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public function admin_page_display() {
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?>
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<div class="wrap">
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<h1>网站变灰设置</h1>
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<form method="post" action="options.php">
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<?php settings_fields('wp_grayscale_memorial_settings'); ?>
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<?php do_settings_sections('wp_grayscale_memorial_settings'); ?>
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<table class="form-table">
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<tr valign="top">
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<th scope="row">启用变灰效果</th>
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<td>
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<input type="checkbox" name="wp_grayscale_memorial_enabled" value="1" <?php checked(get_option('wp_grayscale_memorial_enabled'), 1); ?> />
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</td>
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</tr>
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<tr valign="top">
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<th scope="row">开始日期</th>
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<td>
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<input type="date" name="wp_grayscale_memorial_start_date" value="<?php echo esc_attr(get_option('wp_grayscale_memorial_start_date')); ?>" />
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<p class="description">变灰效果开始的日期（包含当天）</p>
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</td>
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</tr>
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<tr valign="top">
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<th scope="row">结束日期</th>
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<td>
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<input type="date" name="wp_grayscale_memorial_end_date" value="<?php echo esc_attr(get_option('wp_grayscale_memorial_end_date')); ?>" />
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<p class="description">变灰效果结束的日期（包含当天）</p>
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</td>
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</tr>
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</table>
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<?php submit_button(); ?>
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</form>
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</div>
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<?php
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}
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/**
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* 应用灰度效果
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*/
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public function apply_grayscale_effect() {
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// 检查是否启用
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$enabled = get_option('wp_grayscale_memorial_enabled');
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if (!$enabled) {
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return;
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}
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// 获取日期设置
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$start_date = get_option('wp_grayscale_memorial_start_date');
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$end_date = get_option('wp_grayscale_memorial_end_date');
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// 如果没有设置日期，则不执行
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if (empty($start_date) || empty($end_date)) {
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return;
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}
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// 获取当前日期
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$current_date = current_time('Y-m-d');
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// 检查当前日期是否在设定范围内
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if ($current_date >= $start_date && $current_date <= $end_date) {
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// 输出CSS使整个网站变灰
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echo '<style type="text/css">
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html {
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-webkit-filter: grayscale(100%);
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-moz-filter: grayscale(100%);
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-ms-filter: grayscale(100%);
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-o-filter: grayscale(100%);
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filter: grayscale(100%);
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filter: gray;
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}
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</style>';
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}
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}
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/**
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* 卸载插件时清除数据
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*/
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public static function uninstall() {
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delete_option('wp_grayscale_memorial_start_date');
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delete_option('wp_grayscale_memorial_end_date');
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delete_option('wp_grayscale_memorial_enabled');
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}
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}
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// 初始化插件
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new WP_Grayscale_Memorial();
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