#Gocha#

<?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/>.

/** Configurable Reports
  * A Moodle block for creating customizable reports
  * @package blocks
  * @author: Juan leyva <http://www.twitter.com/jleyvadelgado>
  * @date: 2009
  */

if (!defined('MOODLE_INTERNAL')) {
    die('Direct access to this script is forbidden.');    ///  It must be included from a Moodle page
}

require_once($CFG->libdir.'/formslib.php');

class coursestats_form extends moodleform {
    function definition() {
        global $DB, $USER, $CFG;

$mform =& $this->_form;

$mform->addElement('header',  'crformheader' ,get_string('coursestats','block_configurable_reports'), '');

$coursestats = array('totalenrolments'=>get_string('statstotalenrolments','block_configurable_reports'),'activeenrolments'=>get_string('statsactiveenrolments','block_configurable_reports'),'activityview'=>get_string('activityview','block_configurable_reports'),'activitypost'=>get_string('activitypost','block_configurable_reports'));
		$mform->addElement('select', 'stat', get_string('stat','block_configurable_reports'), $coursestats);

$roles = $DB->get_records('role');
		$userroles = array();
		foreach($roles as $r)
			$userroles[$r->id] = $r->shortname;

$mform->addElement('select', 'roles', get_string('roles'), $userroles,array('multiple'=>'multiple'));
		$mform->disabledIf('roles','stat','eq','totalenrolments');
		$mform->disabledIf('roles','stat','eq','activeenrolments');

$this->_customdata['compclass']->add_form_elements($mform,$this);

// buttons
        $this->add_action_buttons(true, get_string('add'));

}

function validation($data, $files){
		global $DB, $CFG;
		$errors = parent::validation($data, $files);

$errors = $this->_customdata['compclass']->validate_form_elements($data,$errors);

if(!isset($CFG->enablestats) || !$CFG->enablestats)
			$errors['stat'] = get_string('globalstatsshouldbeenabled','block_configurable_reports');

if(($data['stat'] == 'activityview' || $data['stat'] == 'activitypost') && !isset($data['roles'])){
			$errors['roles'] = get_string('youmustselectarole','block_configurable_reports');
		}

return $errors;
	}

}