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<?php
// Allows the admin to configure blocks (hide/show, delete and configure)
require_once('../config.php');
require_once($CFG->libdir.'/adminlib.php');
require_once($CFG->libdir.'/tablelib.php');
admin_externalpage_setup('manageblocks');
$confirm = optional_param('confirm', 0, PARAM_BOOL);
$hide = optional_param('hide', 0, PARAM_INT);
$show = optional_param('show', 0, PARAM_INT);
$delete = optional_param('delete', 0, PARAM_INT);
$unprotect = optional_param('unprotect', 0, PARAM_INT);
$protect = optional_param('protect', 0, PARAM_INT);
/// Print headings
$strmanageblocks = get_string('manageblocks');
$strdelete = get_string('delete');
$strversion = get_string('version');
$strhide = get_string('hide');
$strshow = get_string('show');
$strsettings = get_string('settings');
$strcourses = get_string('blockinstances', 'admin');
$strname = get_string('name');
$strshowblockcourse = get_string('showblockcourse');
$strprotecthdr = get_string('blockprotect', 'admin'). $OUTPUT->help_icon('blockprotect','admin');
$strprotect = get_string('blockprotect', 'admin');
$strunprotect = get_string('blockunprotect', 'admin');
/// If data submitted, then process and store.
if (!empty($hide) && confirm_sesskey()) {
if (!$block = $DB->get_record('block', array('id'=>$hide))) {
print_error('blockdoesnotexist', 'error');
}
$DB->set_field('block', 'visible', '0', array('id'=>$block->id)); // Hide block
admin_get_root(true, false); // settings not required - only pages
}
if (!empty($show) && confirm_sesskey() ) {
if (!$block = $DB->get_record('block', array('id'=>$show))) {
print_error('blockdoesnotexist', 'error');
}
$DB->set_field('block', 'visible', '1', array('id'=>$block->id)); // Show block
admin_get_root(true, false); // settings not required - only pages
}
if (!isset($CFG->undeletableblocktypes) || (!is_array($CFG->undeletableblocktypes) && !is_string($CFG->undeletableblocktypes))) {
$undeletableblocktypes = array('navigation', 'settings');
} else if (is_string($CFG->undeletableblocktypes)) {
$undeletableblocktypes = explode(',', $CFG->undeletableblocktypes);
} else {
$undeletableblocktypes = $CFG->undeletableblocktypes;
}
if (!empty($protect) && confirm_sesskey()) {
if (!$block = $DB->get_record('block', array('id'=>$protect))) {
print_error('blockdoesnotexist', 'error');
}
if (!in_array($block->name, $undeletableblocktypes)) {
$undeletableblocktypes[] = $block->name;
set_config('undeletableblocktypes', implode(',', $undeletableblocktypes));
}
admin_get_root(true, false); // settings not required - only pages
}
if (!empty($unprotect) && confirm_sesskey()) {
if (!$block = $DB->get_record('block', array('id'=>$unprotect))) {
print_error('blockdoesnotexist', 'error');
}
if (in_array($block->name, $undeletableblocktypes)) {
$undeletableblocktypes = array_diff($undeletableblocktypes, array($block->name));
set_config('undeletableblocktypes', implode(',', $undeletableblocktypes));
}
admin_get_root(true, false); // settings not required - only pages
}
if (!empty($delete) && confirm_sesskey()) {
echo $OUTPUT->header();
echo $OUTPUT->heading($strmanageblocks);
if (!$block = blocks_get_record($delete)) {
print_error('blockdoesnotexist', 'error');
}
if (get_string_manager()->string_exists('pluginname', "block_$block->name")) {
$strblockname = get_string('pluginname', "block_$block->name");
} else {
$strblockname = $block->name;
}
if (!$confirm) {
echo $OUTPUT->confirm(get_string('blockdeleteconfirm', '', $strblockname), 'blocks.php?delete='.$block->id.'&confirm=1', 'blocks.php');
echo $OUTPUT->footer();
exit;
} else {
// Inform block it's about to be deleted
if (file_exists("$CFG->dirroot/blocks/$block->name/block_$block->name.php")) {
$blockobject = block_instance($block->name);
if ($blockobject) {
$blockobject->before_delete(); //only if we can create instance, block might have been already removed
}
}
// First delete instances and then block
$instances = $DB->get_records('block_instances', array('blockname' => $block->name));
if(!empty($instances)) {
foreach($instances as $instance) {
blocks_delete_instance($instance);
}
}
// Delete block
$DB->delete_records('block', array('id'=>$block->id));
drop_plugin_tables($block->name, "$CFG->dirroot/blocks/$block->name/db/install.xml", false); // old obsoleted table names
drop_plugin_tables('block_'.$block->name, "$CFG->dirroot/blocks/$block->name/db/install.xml", false);
// Delete the capabilities that were defined by this block
capabilities_cleanup('block/'.$block->name);
// Remove event handlers and dequeue pending events
events_uninstall('block/'.$block->name);
$a->block = $strblockname;
$a->directory = $CFG->dirroot.'/blocks/'.$block->name;
notice(get_string('blockdeletefiles', '', $a), 'blocks.php');
}
}
echo $OUTPUT->header();
echo $OUTPUT->heading($strmanageblocks);
/// Main display starts here
/// Get and sort the existing blocks
if (!$blocks = $DB->get_records('block', array(), 'name ASC')) {
print_error('noblocks', 'error'); // Should never happen
}
$incompatible = array();
/// Print the table of all blocks
$table = new flexible_table('admin-blocks-compatible');
$table->define_columns(array('name', 'instances', 'version', 'hideshow', 'undeletable', 'delete', 'settings'));
$table->define_headers(array($strname, $strcourses, $strversion, $strhide.'/'.$strshow, $strprotecthdr, $strdelete, $strsettings));
$table->define_baseurl($CFG->wwwroot.'/'.$CFG->admin.'/blocks.php');
$table->set_attribute('class', 'compatibleblockstable blockstable generaltable');
$table->setup();
$tablerows = array();
foreach ($blocks as $blockid=>$block) {
$blockname = $block->name;
if (!file_exists("$CFG->dirroot/blocks/$blockname/block_$blockname.php")) {
$blockobject = false;
$strblockname = '<span class="notifyproblem">'.$blockname.' ('.get_string('missingfromdisk').')</span>';
$plugin = new stdClass();
$plugin->version = $block->version;
} else {
$plugin = new stdClass();
$plugin->version = '???';
if (file_exists("$CFG->dirroot/blocks/$blockname/version.php")) {
include("$CFG->dirroot/blocks/$blockname/version.php");
}
if (!$blockobject = block_instance($block->name)) {
$incompatible[] = $block;
continue;
}
$strblockname = get_string('pluginname', 'block_'.$blockname);
}
$delete = '<a href="blocks.php?delete='.$blockid.'&amp;sesskey='.sesskey().'">'.$strdelete.'</a>';
$settings = ''; // By default, no configuration
if ($blockobject and $blockobject->has_config()) {
$blocksettings = admin_get_root()->locate('blocksetting' . $block->name);
if ($blocksettings instanceof admin_externalpage) {
$settings = '<a href="' . $blocksettings->url . '">' . get_string('settings') . '</a>';
} else if ($blocksettings instanceof admin_settingpage) {
$settings = '<a href="'.$CFG->wwwroot.'/'.$CFG->admin.'/settings.php?section=blocksetting'.$block->name.'">'.$strsettings.'</a>';
} else {
$settings = '<a href="block.php?block='.$blockid.'">'.$strsettings.'</a>';
}
}
// MDL-11167, blocks can be placed on mymoodle, or the blogs page
// and it should not show up on course search page
$totalcount = $DB->count_records('block_instances', array('blockname'=>$blockname));
$count = $DB->count_records('block_instances', array('blockname'=>$blockname, 'pagetypepattern'=>'course-view-*'));
if ($count>0) {
$blocklist = "<a href=\"{$CFG->wwwroot}/course/search.php?blocklist=$blockid&amp;sesskey=".sesskey()."\" ";
$blocklist .= "title=\"$strshowblockcourse\" >$totalcount</a>";
}
else {
$blocklist = "$totalcount";
}
$class = ''; // Nothing fancy, by default
if (!$blockobject) {
// ignore
$visible = '';
} else if ($blocks[$blockid]->visible) {
$visible = '<a href="blocks.php?hide='.$blockid.'&amp;sesskey='.sesskey().'" title="'.$strhide.'">'.
'<img src="'.$OUTPUT->pix_url('i/hide') . '" class="icon" alt="'.$strhide.'" /></a>';
} else {
$visible = '<a href="blocks.php?show='.$blockid.'&amp;sesskey='.sesskey().'" title="'.$strshow.'">'.
'<img src="'.$OUTPUT->pix_url('i/show') . '" class="icon" alt="'.$strshow.'" /></a>';
$class = ' class="dimmed_text"'; // Leading space required!
}
if ($block->version == $plugin->version) {
$version = $block->version;
} else {
$version = "$block->version ($plugin->version)";
}
if (!$blockobject) {
// ignore
$undeletable = '';
} else if (in_array($blockname, $undeletableblocktypes)) {
$undeletable = '<a href="blocks.php?unprotect='.$blockid.'&amp;sesskey='.sesskey().'" title="'.$strunprotect.'">'.
'<img src="'.$OUTPUT->pix_url('t/unlock') . '" class="icon" alt="'.$strunprotect.'" /></a>';
} else {
$undeletable = '<a href="blocks.php?protect='.$blockid.'&amp;sesskey='.sesskey().'" title="'.$strprotect.'">'.
'<img src="'.$OUTPUT->pix_url('t/unlock_gray') . '" class="icon" alt="'.$strprotect.'" /></a>';
}
$row = array(
'<span'.$class.'>'.$strblockname.'</span>',
$blocklist,
'<span'.$class.'>'.$version.'</span>',
$visible,
$undeletable,
$delete,
$settings
);
$tablerows[] = array(strip_tags($strblockname), $row); // first element will be used for sorting
}
textlib_get_instance()->asort($tablerows);
foreach ($tablerows as $row) {
$table->add_data($row[1]);
}
$table->print_html();
if (!empty($incompatible)) {
echo $OUTPUT->heading(get_string('incompatibleblocks', 'blockstable', 'admin'));
$table = new flexible_table('admin-blocks-incompatible');
$table->define_columns(array('block', 'delete'));
$table->define_headers(array($strname, $strdelete));
$table->define_baseurl($CFG->wwwroot.'/'.$CFG->admin.'/blocks.php');
$table->set_attribute('class', 'incompatibleblockstable generaltable');
$table->setup();
foreach ($incompatible as $block) {
$table->add_data(array(
$block->name,
'<a href="blocks.php?delete='.$block->id.'&amp;sesskey='.sesskey().'">'.$strdelete.'</a>',
));
}
$table->print_html();
}
echo $OUTPUT->footer();
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