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Ticket #5625: fun_with_uninstallation.php

File fun_with_uninstallation.php, 3.5 KB (added by arickmann, 19 years ago)

Plugin that adds uninstallation capability.

Line 
1<?php
2/*
3Plugin Name: Fun with Uninstallation
4Plugin URI: http://www.wp-fun.co.uk/fun-with-uninstallation/
5Description: Adds an uninstall hook
6Author: Andrew Rickmann
7Version: 0.1
8Author URI: http://www.wp-fun.co.uk
9Generated At: www.wp-fun.co.uk;
10*/
11
12if (!class_exists('fw_uninstallation')) {
13 class fw_uninstallation {
14
15
16 /**
17 * PHP 4 Compatible Constructor
18 */
19 function fw_uninstallation(){$this->__construct();}
20
21 /**
22 * PHP 5 Constructor
23 */
24 function __construct(){
25
26
27 add_action('after_plugin_row', array(&$this,'after_plugin_row_intercept'));
28 add_action('load-plugins.php', array(&$this,'load_plugins_intercept'));
29
30
31 }
32
33
34 /**
35 * Checks that the plugin is in a state to be uninstalled, and calls the action to do so
36 */
37 function load_plugins_intercept(){
38
39 if ( isset($_GET['action']) ) {
40 if ('uninstall' == $_GET['action']) {
41 check_admin_referer('uninstall-plugin_' . $_GET['plugin']);
42 $current = get_option('active_plugins');
43 $plugin = trim($_GET['plugin']);
44 if ( validate_file($plugin) )
45 wp_die(__('Invalid plugin.'));
46 if ( ! file_exists(ABSPATH . PLUGINDIR . '/' . $plugin) )
47 wp_die(__('Plugin file does not exist.'));
48 if ( !in_array($plugin, $current )) {
49 if ( $uninstaller = $this->check_uninstall_file( $plugin ) ) {
50 @include( $uninstaller );
51 }
52 }
53
54 wp_redirect('plugins.php?uninstalled=true');
55 }
56 }
57
58 //uninstalled message
59 if ( isset($_GET['uninstalled']) ) {
60 //start the page earlier than anticpated
61 require_once('admin.php');
62 $title = __('Manage Plugins');
63 //includes required for the menu to work properly
64 global $parent_file;
65 global $menu;
66 global $submenu;
67 global $pagenow;
68 global $plugin_page;
69 global $_wp_real_parent_file;
70 global $_wp_menu_nopriv;
71 global $_wp_submenu_nopriv;
72 require_once('admin-header.php');
73 if ('true' == $_GET['uninstalled']) {
74 ?><div id="message" class="updated fade"><p><?php _e('Plugin <strong>Uninstalled</strong>.') ?></p></div><?php } else {
75 ?><div id="message" class="updated fade"><p><?php _e('<strong>Error</strong> The plugin could not be uninstalled.') ?></p></div><?php
76 }
77 }
78
79 }
80
81 /**
82 * checks for the existence of an uninstall file and returns it's name
83 */
84 function check_uninstall_file( $plugin ){
85
86 $plugin_file = ABSPATH . PLUGINDIR . '/' .$plugin;
87 $file_name = str_replace( '.php' , '_uninstaller.php' , $plugin_file );
88 return ( file_exists( $file_name ) ) ? $file_name : false ;
89
90 }
91
92
93 /**
94 * Called by the filter the_content
95 */
96 function after_plugin_row_intercept($plugin_file){
97 global $current_plugins;
98 if ( !in_array($plugin_file, $current_plugins) && $this->check_uninstall_file( $plugin_file ) ) {
99 $toggle = "<a href='" . wp_nonce_url("plugins.php?action=uninstall&amp;plugin=$plugin_file", 'uninstall-plugin_' . $plugin_file) . "' title='".__('Uninstall this plugin')."' class='delete'><strong>".__("Uninstall all the options and settings (including database tables ) relating to this plugin")."</strong></a>";
100 ?>
101 <tr>
102 <td colspan="5" style="border-top:1px solid #ccc; border-bottom:1px solid #ccc; background-color:#F9B7E0"><?php echo $toggle; ?></td>
103 </tr>
104 <?php
105 }
106 }
107
108
109
110 }
111}
112
113//instantiate the class
114if (class_exists('fw_uninstallation')) {
115 $fw_uninstallation = new fw_uninstallation();
116}
117
118
119
120
121?>