mirror of
https://gh.wpcy.net/https://github.com/YahnisElsts/plugin-update-checker.git
synced 2026-04-29 19:22:52 +08:00
317a45dc45
The update checker uses class_exists in several ways: - As a guard clause around `class Whatever` definitions. This ensures we don't try to define a class that has already been loaded by a different plugin. In this case, autoloading is not necessary because we already know how to load the class. Also, we *want to* load our version of that class if possible - the version that gets loaded by somebody else's autoloader might be different and incompatible. - As a guard clause before `require` statements that include a class. This is conceptually the same as the previous example. - To enable optional features if Debug Bar is active. The latest compatible version of Debug Bar doesn't use autoloading, so it would again be unnecessary in this case.
102 lines
No EOL
2.5 KiB
PHP
102 lines
No EOL
2.5 KiB
PHP
<?php
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if ( !class_exists('PucDebugBarPlugin', false) ) {
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class PucDebugBarPlugin {
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/** @var PluginUpdateChecker */
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private $updateChecker;
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public function __construct($updateChecker) {
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$this->updateChecker = $updateChecker;
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add_filter('debug_bar_panels', array($this, 'addDebugBarPanel'));
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add_action('debug_bar_enqueue_scripts', array($this, 'enqueuePanelDependencies'));
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add_action('wp_ajax_puc_debug_check_now', array($this, 'ajaxCheckNow'));
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add_action('wp_ajax_puc_debug_request_info', array($this, 'ajaxRequestInfo'));
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}
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/**
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* Register the PUC Debug Bar panel.
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*
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* @param array $panels
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* @return array
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*/
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public function addDebugBarPanel($panels) {
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require_once dirname(__FILE__) . '/debug-bar-panel.php';
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if ( current_user_can('update_plugins') && class_exists('PluginUpdateCheckerPanel', false) ) {
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$panels[] = new PluginUpdateCheckerPanel($this->updateChecker);
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}
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return $panels;
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}
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/**
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* Enqueue our Debug Bar scripts and styles.
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*/
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public function enqueuePanelDependencies() {
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wp_enqueue_style(
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'puc-debug-bar-style',
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plugins_url( "/css/puc-debug-bar.css", __FILE__ ),
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array('debug-bar'),
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'20130927'
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);
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wp_enqueue_script(
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'puc-debug-bar-js',
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plugins_url( "/js/debug-bar.js", __FILE__ ),
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array('jquery'),
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'20121026'
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);
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}
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/**
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* Run an update check and output the result. Useful for making sure that
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* the update checking process works as expected.
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*/
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public function ajaxCheckNow() {
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if ( $_POST['slug'] !== $this->updateChecker->slug ) {
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return;
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}
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$this->preAjaxReqest();
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$update = $this->updateChecker->checkForUpdates();
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if ( $update !== null ) {
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echo "An update is available:";
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echo '<pre>', htmlentities(print_r($update, true)), '</pre>';
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} else {
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echo 'No updates found.';
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}
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exit;
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}
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/**
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* Request plugin info and output it.
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*/
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public function ajaxRequestInfo() {
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if ( $_POST['slug'] !== $this->updateChecker->slug ) {
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return;
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}
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$this->preAjaxReqest();
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$info = $this->updateChecker->requestInfo();
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if ( $info !== null ) {
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echo 'Successfully retrieved plugin info from the metadata URL:';
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echo '<pre>', htmlentities(print_r($info, true)), '</pre>';
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} else {
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echo 'Failed to retrieve plugin info from the metadata URL.';
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}
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exit;
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}
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/**
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* Check access permissions and enable error display (for debugging).
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*/
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private function preAjaxReqest() {
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if ( !current_user_can('update_plugins') ) {
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die('Access denied');
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}
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check_ajax_referer('puc-ajax');
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error_reporting(E_ALL);
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@ini_set('display_errors','On');
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}
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}
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} |
