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<?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/>.
/**
* Capabilities table with risks.
*
* @package core_role
* @copyright 1999 onwards Martin Dougiamas (http://dougiamas.com)
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
defined('MOODLE_INTERNAL') || die();
/**
* This subclass is the bases for both the define roles and override roles
* pages. As well as adding the risks columns, this also provides generic
* facilities for showing a certain number of permissions columns, and
* recording the current and submitted permissions for each capability.
*/
abstract class core_role_capability_table_with_risks extends core_role_capability_table_base {
protected $allrisks;
protected $allpermissions; // We don't need perms ourselves, but all our subclasses do.
protected $strperms; // Language string cache.
protected $risksurl; // URL in moodledocs about risks.
/** @var array The capabilities to highlight as default/inherited. */
protected $parentpermissions;
protected $displaypermissions;
protected $permissions;
protected $changed;
protected $roleid;
public function __construct($context, $id, $roleid) {
parent::__construct($context, $id);
$this->allrisks = get_all_risks();
$this->risksurl = get_docs_url(s(get_string('risks', 'core_role')));
$this->allpermissions = array(
CAP_INHERIT => 'inherit',
CAP_ALLOW => 'allow',
CAP_PREVENT => 'prevent' ,
CAP_PROHIBIT => 'prohibit',
);
$this->strperms = array();
foreach ($this->allpermissions as $permname) {
$this->strperms[$permname] = get_string($permname, 'core_role');
}
$this->roleid = $roleid;
$this->load_current_permissions();
// Fill in any blank permissions with an explicit CAP_INHERIT, and init a locked field.
foreach ($this->capabilities as $capid => $cap) {
if (!isset($this->permissions[$cap->name])) {
$this->permissions[$cap->name] = CAP_INHERIT;
}
$this->capabilities[$capid]->locked = false;
}
}
protected function load_current_permissions() {
global $DB;
// Load the overrides/definition in this context.
if ($this->roleid) {
$this->permissions = $DB->get_records_menu('role_capabilities', array('roleid' => $this->roleid,
'contextid' => $this->context->id), '', 'capability,permission');
} else {
$this->permissions = array();
}
}
protected abstract function load_parent_permissions();
/**
* Update $this->permissions based on submitted data, while making a list of
* changed capabilities in $this->changed.
*/
public function read_submitted_permissions() {
$this->changed = array();
foreach ($this->capabilities as $cap) {
if ($cap->locked || $this->skip_row($cap)) {
// The user is not allowed to change the permission for this capability.
continue;
}
$permission = optional_param($cap->name, null, PARAM_PERMISSION);
if (is_null($permission)) {
// A permission was not specified in submitted data.
continue;
}
// If the permission has changed, update $this->permissions and
// Record the fact there is data to save.
if ($this->permissions[$cap->name] != $permission) {
$this->permissions[$cap->name] = $permission;
$this->changed[] = $cap->name;
}
}
}
/**
* Save the new values of any permissions that have been changed.
*/
public function save_changes() {
// Set the permissions.
foreach ($this->changed as $changedcap) {
assign_capability($changedcap, $this->permissions[$changedcap],
$this->roleid, $this->context->id, true);
}
}
public function display() {
$this->load_parent_permissions();
foreach ($this->capabilities as $cap) {
if (!isset($this->parentpermissions[$cap->name])) {
$this->parentpermissions[$cap->name] = CAP_INHERIT;
}
}
parent::display();
}
protected function add_header_cells() {
global $OUTPUT;
echo '<th colspan="' . count($this->displaypermissions) . '" scope="col">' .
get_string('permission', 'core_role') . ' ' . $OUTPUT->help_icon('permission', 'core_role') . '</th>';
echo '<th class="risk" colspan="' . count($this->allrisks) . '" scope="col">' . get_string('risks', 'core_role') . '</th>';
}
protected function num_extra_columns() {
return count($this->displaypermissions) + count($this->allrisks);
}
protected function get_row_classes($capability) {
$rowclasses = array();
foreach ($this->allrisks as $riskname => $risk) {
if ($risk & (int)$capability->riskbitmask) {
$rowclasses[] = $riskname;
}
}
return $rowclasses;
}
protected abstract function add_permission_cells($capability);
protected function add_row_cells($capability) {
$cells = $this->add_permission_cells($capability);
// One cell for each possible risk.
foreach ($this->allrisks as $riskname => $risk) {
$cells .= '<td class="risk ' . str_replace('risk', '', $riskname) . '">';
if ($risk & (int)$capability->riskbitmask) {
$cells .= $this->get_risk_icon($riskname);
}
$cells .= '</td>';
}
return $cells;
}
/**
* Print a risk icon, as a link to the Risks page on Moodle Docs.
*
* @param string $type the type of risk, will be one of the keys from the
* get_all_risks array. Must start with 'risk'.
*/
public function get_risk_icon($type) {
global $OUTPUT;
$alt = get_string("{$type}short", "admin");
$title = get_string($type, "admin");
$text = $OUTPUT->pix_icon('i/' . str_replace('risk', 'risk_', $type), $alt, 'moodle', [
'title' => $title,
]);
$action = new popup_action('click', $this->risksurl, 'docspopup');
$riskicon = $OUTPUT->action_link($this->risksurl, $text, $action);
return $riskicon;
}
}