MDL-21558 adding local plugins management page into the admin tree

The new admin external page admin/localplugins.php provides a list of
installed local plugins with a possibility to remove it.

admin/localplugins.php

@@ -0,0 +1,103 @@
+<?php
+
+// This file is part of Moodle - http://moodle.org/
+//
+// Moodle is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// Moodle is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
+
+/**
+ * Provides an overview of installed local plugins
+ *
+ * Displays the list of found local plugins, their version (if found) and
+ * a link to delete the local plugin.
+ *
+ * @see       http://docs.moodle.org/en/Development:Local_customisation
+ * @package   admin
+ * @copyright 2010 David Mudrak <david.mudrak@gmail.com>
+ * @license   http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+
+require_once(dirname(dirname(__FILE__)) . '/config.php');
+require_once($CFG->libdir.'/adminlib.php');
+require_once($CFG->libdir.'/tablelib.php');
+
+admin_externalpage_setup('managelocalplugins');
+
+$delete  = optional_param('delete', '', PARAM_SAFEDIR);
+$confirm = optional_param('confirm', '', PARAM_BOOL);
+
+/// If data submitted, then process and store.
+
+if (!empty($delete) and confirm_sesskey()) {
+    admin_externalpage_print_header();
+    echo $OUTPUT->heading(get_string('localplugins'));
+
+    if (!$confirm) {
+        echo $OUTPUT->confirm(get_string('localplugindeleteconfirm', '', get_string('pluginname', 'local_' . $delete)),
+                                new moodle_url($PAGE->url, array('delete' => $delete, 'confirm' => 1)),
+                                $PAGE->url);
+        echo $OUTPUT->footer();
+        die();
+
+    } else {
+        uninstall_plugin('local', $delete);
+        $a = new stdclass();
+        $a->name = $delete;
+        $pluginlocation = get_plugin_types();
+        $a->directory = $pluginlocation['local'] . '/' . $delete;
+        echo $OUTPUT->notification(get_string('plugindeletefiles', '', $a), 'notifysuccess');
+        echo $OUTPUT->continue_button($PAGE->url);
+        echo $OUTPUT->footer();
+        die();
+    }
+}
+
+admin_externalpage_print_header();
+echo $OUTPUT->heading(get_string('localplugins'));
+
+/// Print the table of all installed local plugins
+
+$table = new flexible_table('localplugins_administration_table');
+$table->define_columns(array('name', 'version', 'delete'));
+$table->define_headers(array(get_string('plugin'), get_string('version'), get_string('delete')));
+$table->define_baseurl($PAGE->url);
+$table->set_attribute('id', 'localplugins');
+$table->set_attribute('class', 'generaltable generalbox boxaligncenter boxwidthwide');
+$table->setup();
+
+foreach (get_plugin_list('local') as $plugin => $plugindir) {
+    $strpluginname = get_string('pluginname', 'local_' . $plugin);
+    if ($strpluginname == '[[pluginname]]') {
+        $strpluginname = $plugin;
+    }
+    $plugins[$plugin] = $strpluginname;
+}
+sort($plugins, SORT_LOCALE_STRING);
+
+foreach ($plugins as $plugin => $name) {
+    $delete = new moodle_url($PAGE->url, array('delete' => $plugin, 'sesskey' => sesskey()));
+    $delete = $OUTPUT->link($delete, get_string('delete'));
+
+    $version = get_config('local_' . $plugin);
+    if (!empty($version->version)) {
+        $version = $version->version;
+    } else {
+        $version = '?';
+    }
+
+    $table->add_data(array($name, $version, $delete));
+}
+
+$table->print_html();
+
+echo $OUTPUT->footer();

admin/settings/plugins.php

@@ -325,6 +325,11 @@
 
 
 /// Add all local plugins - must be always last!
+if ($hassiteconfig) {
+    $ADMIN->add('modules', new admin_category('localplugins', get_string('localplugins')));
+    $ADMIN->add('localplugins', new admin_externalpage('managelocalplugins', get_string('localpluginsmanage'),
+                                                        $CFG->wwwroot . '/' . $CFG->admin . '/localplugins.php'));
+}
 
 foreach (get_plugin_list('local') as $plugin => $plugindir) {
     $settings_path = "$plugindir/settings.php";

lang/en_utf8/moodle.php

@@ -932,6 +932,9 @@
 $string['livelogs'] = 'Live logs from the past hour';
 $string['local'] = 'Local';
 $string['locale'] = 'en_AU.UTF-8';
+$string['localplugindeleteconfirm'] = 'You are about to completely delete the local plugin \'{$a}\'. This will completely delete everything in the database associated with this plugin. Are you SURE you want to continue?';
+$string['localplugins'] = 'Local plugins';
+$string['localpluginsmanage'] = 'Manage local plugins';
 $string['location'] = 'Location';
 $string['log_excel_date_format'] = 'yyyy mmmm d h:mm';
 $string['loggedinas'] = 'You are logged in as $a';
@@ -1281,10 +1284,12 @@
 $string['pleaseclose'] = 'Please close this window now.';
 $string['pleasesearchmore'] = 'Please search some more';
 $string['pleaseusesearch'] = 'Please use the search';
+$string['plugin'] = 'Plugin';
 $string['plugincheck'] = 'Plugins check';
 $string['pluginchecknotice'] = 'The following tables show the modules, blocks and filters that have been detected in your current Moodle installation;
 They indicate which plugins are standard, and which are not. All non-standard plugins should be checked and upgraded to their most recent versions
 before continuing with this Moodle upgrade.';
+$string['plugindeletefiles'] = 'All data associated with the plugin \'{$a->name}\' has been deleted from the database. To prevent the plugin re-installing itself, you should now delete this directory from your server: {$a->directory}';
 $string['pluginsetup'] = 'Setting up plugin tables';
 $string['policyaccept'] = 'I understand and agree';
 $string['policyagree'] = 'You must agree to this policy to continue using this site.  Do you agree?';
@@ -1825,4 +1830,4 @@
 $string['requestedcourses'] = 'Requested courses';
 $string['addcountertousername'] = 'Create user by adding number to username';
 $string['uploadfilecontentsnovaliddata'] = 'The uploaded file contains no valid data.';
-?>
+?>