C:/xampp/htdocs/moodle/backup/util/ui/backup_ui.class.php

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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/>.

class backup_ui extends base_ui {
    const STAGE_INITIAL = 1;
    const STAGE_SCHEMA = 2;
    const STAGE_CONFIRMATION = 4;
    const STAGE_FINAL = 8;
    const STAGE_COMPLETE = 16;

    protected static $skipcurrentstage = false;

    protected function initialise_stage($stage = null, array $params=null) {
        if ($stage == null) {
            $stage = optional_param('stage', self::STAGE_INITIAL, PARAM_INT);
        }
        if (self::$skipcurrentstage) {
            $stage *= 2;
        }
        switch ($stage) {
            case backup_ui::STAGE_INITIAL:
                $stage = new backup_ui_stage_initial($this, $params);
                break;
            case backup_ui::STAGE_SCHEMA:
                $stage = new backup_ui_stage_schema($this, $params);
                break;
            case backup_ui::STAGE_CONFIRMATION:
                $stage = new backup_ui_stage_confirmation($this, $params);
                break;
            case backup_ui::STAGE_FINAL:
                $stage = new backup_ui_stage_final($this, $params);
                break;
            default:
                $stage = false;
                break;
        }
        return $stage;
    }
    public function get_uniqueid() {
        return $this->get_backupid();
    }
    public function get_backupid() {
        return $this->controller->get_backupid();
    }
    public function execute() {
        if ($this->progress >= self::PROGRESS_EXECUTED) {
            throw new backup_ui_exception('backupuialreadyexecuted');
        }
        if ($this->stage->get_stage() < self::STAGE_FINAL) {
            throw new backup_ui_exception('backupuifinalisedbeforeexecute');
        }
        $this->progress = self::PROGRESS_EXECUTED;
        $this->controller->finish_ui();
        $this->controller->execute_plan();
        $this->stage = new backup_ui_stage_complete($this, $this->stage->get_params(), $this->controller->get_results());
        return true;
    }
    final public static function load_controller($backupid=false) {
        // Get the backup id optional param
        if ($backupid) {
            try {
                // Try to load the controller with it.
                // If it fails at this point it is likely because this is the first load
                $controller = backup_controller::load_controller($backupid);
                return $controller;
            } catch (Exception $e) {
                return false;
            }
        }
        return $backupid;
    }

    public function get_progress_bar() {
        global $PAGE;

        $stage = self::STAGE_COMPLETE;
        $currentstage = $this->stage->get_stage();
        $items = array();
        while ($stage > 0) {
            $classes = array('backup_stage');
            if (floor($stage/2) == $currentstage) {
                $classes[] = 'backup_stage_next';
            } else if ($stage == $currentstage) {
                $classes[] = 'backup_stage_current';
            } else if ($stage < $currentstage) {
                $classes[] = 'backup_stage_complete';
            }
            $item = array('text' => strlen(decbin($stage)).'. '.get_string('currentstage'.$stage, 'backup'),'class' => join(' ', $classes));
            if ($stage < $currentstage && $currentstage < self::STAGE_COMPLETE && (!self::$skipcurrentstage || ($stage*2) != $currentstage)) {
                $params = $this->stage->get_params();
                if (empty($params)) {
                    $params = array();
                }
                $params = array_merge($params, array('backup'=>$this->get_backupid(), 'stage'=>$stage));
                $item['link'] = new moodle_url($PAGE->url, $params);
            }
            array_unshift($items, $item);
            $stage = floor($stage/2);
        }
        return $items;
    }
    public function get_name() {
        return 'backup';
    }
    public function get_first_stage_id() {
        return self::STAGE_INITIAL;
    }
    public static function skip_current_stage($setting=true) {
        self::$skipcurrentstage = $setting;
    }
}

class backup_ui_exception extends base_ui_exception {}