Pressbooks\Modules\ThemeOptions\PDFOptions::renderPageSizeField PHP Метод

    function renderPageSizeField($args)
    {
        if (!isset($this->options['pdf_page_size'])) {
            if (isset($this->options['pdf_page_width']) && isset($this->options['pdf_page_height'])) {
                if ('5.5in' == $this->options['pdf_page_width'] && '8.5in' == $this->options['pdf_page_height']) {
                    $this->options['pdf_page_size'] = 1;
                } elseif ('6in' == $this->options['pdf_page_width'] && '9in' == $this->options['pdf_page_height']) {
                    $this->options['pdf_page_size'] = 2;
                } elseif ('8.5in' == $this->options['pdf_page_width'] && '11in' == $this->options['pdf_page_height']) {
                    $this->options['pdf_page_size'] = 3;
                } elseif ('8.5in' == $this->options['pdf_page_width'] && '9.25in' == $this->options['pdf_page_height']) {
                    $this->options['pdf_page_size'] = 4;
                } elseif ('5in' == $this->options['pdf_page_width'] && '7.75in' == $this->options['pdf_page_height']) {
                    $this->options['pdf_page_size'] = 5;
                } elseif ('4.25in' == $this->options['pdf_page_width'] && '7in' == $this->options['pdf_page_height']) {
                    $this->options['pdf_page_size'] = 6;
                } elseif ('21cm' == $this->options['pdf_page_width'] && '29.7cm' == $this->options['pdf_page_height']) {
                    $this->options['pdf_page_size'] = 7;
                } elseif ('14.8cm' == $this->options['pdf_page_width'] && '21cm' == $this->options['pdf_page_height']) {
                    $this->options['pdf_page_size'] = 8;
                } elseif ('5in' == $this->options['pdf_page_width'] && '8in' == $this->options['pdf_page_height']) {
                    $this->options['pdf_page_size'] = 9;
                } else {
                    $this->options['pdf_page_size'] = 10;
                }
            } else {
                $this->options['pdf_page_size'] = 1;
            }
        }
        $html = "<select name='pressbooks_theme_options_pdf[pdf_page_size]' id='pdf_page_size' >";
        foreach ($args as $key => $val) {
            $html .= "<option value='" . ($key + 1) . "' " . selected($key + 1, $this->options['pdf_page_size'], false) . ">{$val}</option>";
        }
        $html .= '<select>';
        echo $html;
    }