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<?php

namespace CGExtensions\reports;

// this generator runs the report and returns a data array.
class data_report_generator extends tabular_report_generator
{
    private $_data = array('structure'=>array());
    private $_rec;

    protected function start()
    {
        $this->_data['title'] = $this->report()->get_title();
        $this->_data['description'] = $this->report()->get_description();
        $this->_data['generated'] = time();
    }

    protected function before_group_headers()
    {
        $this->_rec = array('headers'=>array(),'footers'=>array(),'body'=>array());
    }

    protected function do_group_header(tabular_report_defn_group $grp)
    {
        // this method does not call the parent method
        $lines = $grp->get_header_lines();
        if( count($lines) ) {
            foreach( $lines as $line ) {
                $rec = array();
                foreach( $this->report()->get_columns() as $key => $col ) {
                    $val = $line->get_column_value($key);
                    $rec[$key] = $this->get_group_column_display_value($key,$grp->get_column(),$val);
                }
                $this->_rec['headers'][] = $rec;
            }
        }
    }

    function do_group_footer(tabular_report_defn_group $grp)
    {
        // this method does not call the parent method
        $lines = $grp->get_footer_lines();
        if( count($lines) ) {
            foreach( $lines as $line ) {
                $rec = array();
                foreach( $this->report()->get_columns() as $key => $col ) {
                    $val = $line->get_column_value($key);
                    $rec[$key] = $this->get_group_column_display_value($key,$grp->get_column(),$val);
                }
                $this->_rec['footers'][] = $rec;
            }
        }
        // this group has changed, go through all columns and reset this group
        foreach( $this->report()->get_columns() as $key => $col ) {
            $col->reset_group($grp->get_column());
        }
    }

    function after_group_footers()
    {
        $this->_data['structure'][] = $this->_rec;
        $this->_rec = null;
    }

    protected function set_row($row)
    {
        parent::set_row($row);
        $this->_rec['body'][] = $row;
    }

    protected function draw_cell(tabular_report_cellfmt $col,$val)
    {
        // nothing to do here.
    }

    public function get_output()
    {
        return $this->_data;
    }
} // end of class

?>