C:/xampp/htdocs/moodle/backup/util/ui/base_ui_stage.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/>.

abstract class base_ui_stage {
    protected $stage = 1;
    protected $ui;
    protected $stageform = null;
    protected $params = null;
    public function __construct(base_ui $ui, array $params=null) {
        $this->ui = $ui;
        $this->params = $params;
    }
    final public function get_params() {
        return $this->params;
    }
    final public function get_stage() {
        return $this->stage;
    }
    final public function get_next_stage() {
        return floor($this->stage*2);
    }
    final public function get_prev_stage() {
        return floor($this->stage/2);
    }
    public function get_name() {
        return get_string('currentstage'.$this->stage,'backup');
    }
    final public function get_uniqueid() {
        return $this->ui->get_uniqueid();
    }

    public function display() {

        $form = $this->initialise_stage_form();
        // a nasty hack follows to work around the sad fact that moodle quickforms
        // do not allow to actually return the HTML content, just to echo it
        flush();
        ob_start();
        $form->display();
        $output = ob_get_contents();
        ob_end_clean();

        return $output;
    }

    abstract public function process(base_moodleform $form=null);
    abstract protected function initialise_stage_form();

    final public function get_ui() {
        return $this->ui;
    }

    public function is_first_stage() {
        return $this->stage == 1;
    }
}