admin/blocks.php

   1 <?php
   2
   3     // Allows the admin to configure blocks (hide/show, delete and configure)
   4
   5     require_once('../config.php');
   6     require_once($CFG->libdir.'/adminlib.php');
   7     require_once($CFG->libdir.'/tablelib.php');
   8
   9     admin_externalpage_setup('manageblocks');
  10
  11     $confirm  = optional_param('confirm', 0, PARAM_BOOL);
  12     $hide     = optional_param('hide', 0, PARAM_INT);
  13     $show     = optional_param('show', 0, PARAM_INT);
  14     $delete   = optional_param('delete', 0, PARAM_INT);
  15     $unprotect = optional_param('unprotect', 0, PARAM_INT);
  16     $protect = optional_param('protect', 0, PARAM_INT);
  17
  18 /// Print headings
  19
  20     $strmanageblocks = get_string('manageblocks');
  21     $strdelete = get_string('delete');
  22     $strversion = get_string('version');
  23     $strhide = get_string('hide');
  24     $strshow = get_string('show');
  25     $strsettings = get_string('settings');
  26     $strcourses = get_string('blockinstances', 'admin');
  27     $strname = get_string('name');
  28     $strshowblockcourse = get_string('showblockcourse');
  29     $strprotecthdr = get_string('blockprotect', 'admin'). $OUTPUT->help_icon('blockprotect','admin');
  30     $strprotect = get_string('blockprotect', 'admin');
  31     $strunprotect = get_string('blockunprotect', 'admin');
  32
  33 /// If data submitted, then process and store.
  34
  35     if (!empty($hide) && confirm_sesskey()) {
  36         if (!$block = $DB->get_record('block', array('id'=>$hide))) {
  37             print_error('blockdoesnotexist', 'error');
  38         }
  39         $DB->set_field('block', 'visible', '0', array('id'=>$block->id));      // Hide block
  40         admin_get_root(true, false);  // settings not required - only pages
  41     }
  42
  43     if (!empty($show) && confirm_sesskey() ) {
  44         if (!$block = $DB->get_record('block', array('id'=>$show))) {
  45             print_error('blockdoesnotexist', 'error');
  46         }
  47         $DB->set_field('block', 'visible', '1', array('id'=>$block->id));      // Show block
  48         admin_get_root(true, false);  // settings not required - only pages
  49     }
  50
  51     if (!isset($CFG->undeletableblocktypes) || (!is_array($CFG->undeletableblocktypes) && !is_string($CFG->undeletableblocktypes))) {
  52         $undeletableblocktypes = array('navigation', 'settings');
  53     } else if (is_string($CFG->undeletableblocktypes)) {
  54         $undeletableblocktypes = explode(',', $CFG->undeletableblocktypes);
  55     } else {
  56         $undeletableblocktypes = $CFG->undeletableblocktypes;
  57     }
  58
  59     if (!empty($protect) && confirm_sesskey()) {
  60         if (!$block = $DB->get_record('block', array('id'=>$protect))) {
  61             print_error('blockdoesnotexist', 'error');
  62         }
  63         if (!in_array($block->name, $undeletableblocktypes)) {
  64             $undeletableblocktypes[] = $block->name;
  65             set_config('undeletableblocktypes', implode(',', $undeletableblocktypes));
  66         }
  67         admin_get_root(true, false);  // settings not required - only pages
  68     }
  69
  70     if (!empty($unprotect) && confirm_sesskey()) {
  71         if (!$block = $DB->get_record('block', array('id'=>$unprotect))) {
  72             print_error('blockdoesnotexist', 'error');
  73         }
  74         if (in_array($block->name, $undeletableblocktypes)) {
  75             $undeletableblocktypes = array_diff($undeletableblocktypes, array($block->name));
  76             set_config('undeletableblocktypes', implode(',', $undeletableblocktypes));
  77         }
  78         admin_get_root(true, false);  // settings not required - only pages
  79     }
  80
  81     if (!empty($delete) && confirm_sesskey()) {
  82         echo $OUTPUT->header();
  83         echo $OUTPUT->heading($strmanageblocks);
  84
  85         if (!$block = blocks_get_record($delete)) {
  86             print_error('blockdoesnotexist', 'error');
  87         }
  88
  89         if (get_string_manager()->string_exists('pluginname', "block_$block->name")) {
  90             $strblockname = get_string('pluginname', "block_$block->name");
  91         } else {
  92             $strblockname = $block->name;
  93         }
  94
  95         if (!$confirm) {
  96             echo $OUTPUT->confirm(get_string('blockdeleteconfirm', '', $strblockname), 'blocks.php?delete='.$block->id.'&confirm=1', 'blocks.php');
  97             echo $OUTPUT->footer();
  98             exit;
  99
 100         } else {
 101             uninstall_plugin('block', $block->name);
 102
 103             $a->block = $strblockname;
 104             $a->directory = $CFG->dirroot.'/blocks/'.$block->name;
 105             notice(get_string('blockdeletefiles', '', $a), 'blocks.php');
 106         }
 107     }
 108
 109     echo $OUTPUT->header();
 110     echo $OUTPUT->heading($strmanageblocks);
 111
 112 /// Main display starts here
 113
 114 /// Get and sort the existing blocks
 115
 116     if (!$blocks = $DB->get_records('block', array(), 'name ASC')) {
 117         print_error('noblocks', 'error');  // Should never happen
 118     }
 119
 120     $incompatible = array();
 121
 122 /// Print the table of all blocks
 123
 124     $table = new flexible_table('admin-blocks-compatible');
 125
 126     $table->define_columns(array('name', 'instances', 'version', 'hideshow', 'undeletable', 'delete', 'settings'));
 127     $table->define_headers(array($strname, $strcourses, $strversion, $strhide.'/'.$strshow, $strprotecthdr, $strdelete, $strsettings));
 128     $table->define_baseurl($CFG->wwwroot.'/'.$CFG->admin.'/blocks.php');
 129     $table->set_attribute('class', 'compatibleblockstable blockstable generaltable');
 130     $table->setup();
 131     $tablerows = array();
 132
 133     foreach ($blocks as $blockid=>$block) {
 134         $blockname = $block->name;
 135
 136         if (!file_exists("$CFG->dirroot/blocks/$blockname/block_$blockname.php")) {
 137             $blockobject  = false;
 138             $strblockname = '<span class="notifyproblem">'.$blockname.' ('.get_string('missingfromdisk').')</span>';
 139             $plugin = new stdClass();
 140             $plugin->version = $block->version;
 141
 142         } else {
 143             $plugin = new stdClass();
 144             $plugin->version = '???';
 145             if (file_exists("$CFG->dirroot/blocks/$blockname/version.php")) {
 146                 include("$CFG->dirroot/blocks/$blockname/version.php");
 147             }
 148
 149             if (!$blockobject  = block_instance($block->name)) {
 150                 $incompatible[] = $block;
 151                 continue;
 152             }
 153             $strblockname = get_string('pluginname', 'block_'.$blockname);
 154         }
 155
 156         $delete = '<a href="blocks.php?delete='.$blockid.'&amp;sesskey='.sesskey().'">'.$strdelete.'</a>';
 157
 158         $settings = ''; // By default, no configuration
 159         if ($blockobject and $blockobject->has_config()) {
 160             $blocksettings = admin_get_root()->locate('blocksetting' . $block->name);
 161
 162             if ($blocksettings instanceof admin_externalpage) {
 163                 $settings = '<a href="' . $blocksettings->url .  '">' . get_string('settings') . '</a>';
 164             } else if ($blocksettings instanceof admin_settingpage) {
 165                 $settings = '<a href="'.$CFG->wwwroot.'/'.$CFG->admin.'/settings.php?section=blocksetting'.$block->name.'">'.$strsettings.'</a>';
 166             } else {
 167                 $settings = '<a href="block.php?block='.$blockid.'">'.$strsettings.'</a>';
 168             }
 169         }
 170
 171         // MDL-11167, blocks can be placed on mymoodle, or the blogs page
 172         // and it should not show up on course search page
 173
 174         $totalcount = $DB->count_records('block_instances', array('blockname'=>$blockname));
 175         $count = $DB->count_records('block_instances', array('blockname'=>$blockname, 'pagetypepattern'=>'course-view-*'));
 176
 177         if ($count>0) {
 178             $blocklist = "<a href=\"{$CFG->wwwroot}/course/search.php?blocklist=$blockid&amp;sesskey=".sesskey()."\" ";
 179             $blocklist .= "title=\"$strshowblockcourse\" >$totalcount</a>";
 180         }
 181         else {
 182             $blocklist = "$totalcount";
 183         }
 184         $class = ''; // Nothing fancy, by default
 185
 186         if (!$blockobject) {
 187             // ignore
 188             $visible = '';
 189         } else if ($blocks[$blockid]->visible) {
 190             $visible = '<a href="blocks.php?hide='.$blockid.'&amp;sesskey='.sesskey().'" title="'.$strhide.'">'.
 191                        '<img src="'.$OUTPUT->pix_url('i/hide') . '" class="icon" alt="'.$strhide.'" /></a>';
 192         } else {
 193             $visible = '<a href="blocks.php?show='.$blockid.'&amp;sesskey='.sesskey().'" title="'.$strshow.'">'.
 194                        '<img src="'.$OUTPUT->pix_url('i/show') . '" class="icon" alt="'.$strshow.'" /></a>';
 195             $class = ' class="dimmed_text"'; // Leading space required!
 196         }
 197
 198         if ($block->version == $plugin->version) {
 199             $version = $block->version;
 200         } else {
 201             $version = "$block->version ($plugin->version)";
 202         }
 203
 204         if (!$blockobject) {
 205             // ignore
 206             $undeletable = '';
 207         } else if (in_array($blockname, $undeletableblocktypes)) {
 208             $undeletable = '<a href="blocks.php?unprotect='.$blockid.'&amp;sesskey='.sesskey().'" title="'.$strunprotect.'">'.
 209                        '<img src="'.$OUTPUT->pix_url('t/unlock') . '" class="icon" alt="'.$strunprotect.'" /></a>';
 210         } else {
 211             $undeletable = '<a href="blocks.php?protect='.$blockid.'&amp;sesskey='.sesskey().'" title="'.$strprotect.'">'.
 212                        '<img src="'.$OUTPUT->pix_url('t/unlock_gray') . '" class="icon" alt="'.$strprotect.'" /></a>';
 213         }
 214
 215         $row = array(
 216             '<span'.$class.'>'.$strblockname.'</span>',
 217             $blocklist,
 218             '<span'.$class.'>'.$version.'</span>',
 219             $visible,
 220             $undeletable,
 221             $delete,
 222             $settings
 223         );
 224         $tablerows[] = array(strip_tags($strblockname), $row); // first element will be used for sorting
 225     }
 226
 227     collatorlib::asort($tablerows);
 228     foreach ($tablerows as $row) {
 229         $table->add_data($row[1]);
 230     }
 231
 232     $table->print_html();
 233
 234     if (!empty($incompatible)) {
 235         echo $OUTPUT->heading(get_string('incompatibleblocks', 'blockstable', 'admin'));
 236
 237         $table = new flexible_table('admin-blocks-incompatible');
 238
 239         $table->define_columns(array('block', 'delete'));
 240         $table->define_headers(array($strname, $strdelete));
 241         $table->define_baseurl($CFG->wwwroot.'/'.$CFG->admin.'/blocks.php');
 242
 243         $table->set_attribute('class', 'incompatibleblockstable generaltable');
 244
 245         $table->setup();
 246
 247         foreach ($incompatible as $block) {
 248             $table->add_data(array(
 249                 $block->name,
 250                 '<a href="blocks.php?delete='.$block->id.'&amp;sesskey='.sesskey().'">'.$strdelete.'</a>',
 251             ));
 252         }
 253         $table->print_html();
 254     }
 255
 256     echo $OUTPUT->footer();
 257
 258