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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/>.

/**
 * Renderers for outputting blog data
 *
 * @package    core_blog
 * @subpackage blog
 * @copyright  2012 David Monllaó
 * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
 */

defined('MOODLE_INTERNAL') || die();

/**
 * Blog renderer
 */
class core_blog_renderer extends plugin_renderer_base {

/**
     * Renders a blog entry
     *
     * @param blog_entry $entry
     * @return string The table HTML
     */
    public function render_blog_entry(blog_entry $entry) {

global $CFG;

$syscontext = context_system::instance();

$stredit = get_string('edit');
        $strdelete = get_string('delete');

// Header.
        $mainclass = 'forumpost blog_entry blog clearfix ';
        if ($entry->renderable->unassociatedentry) {
            $mainclass .= 'draft';
        } else {
            $mainclass .= $entry->publishstate;
        }
        $o = $this->output->container_start($mainclass, 'b' . $entry->id);
        $o .= $this->output->container_start('row header clearfix');

// User picture.
        $o .= $this->output->container_start('left picture header');
        $o .= $this->output->user_picture($entry->renderable->user);
        $o .= $this->output->container_end();

$o .= $this->output->container_start('topic starter header clearfix');

// Title.
        $titlelink = html_writer::link(new moodle_url('/blog/index.php',
                                                       array('entryid' => $entry->id)),
                                                       format_string($entry->subject));
        $o .= $this->output->container($titlelink, 'subject');

// Post by.
        $by = new stdClass();
        $fullname = fullname($entry->renderable->user, has_capability('moodle/site:viewfullnames', $syscontext));
        $userurlparams = array('id' => $entry->renderable->user->id, 'course' => $this->page->course->id);
        $by->name = html_writer::link(new moodle_url('/user/view.php', $userurlparams), $fullname);

$by->date = userdate($entry->created);
        $o .= $this->output->container(get_string('bynameondate', 'forum', $by), 'author');

// Adding external blog link.
        if (!empty($entry->renderable->externalblogtext)) {
            $o .= $this->output->container($entry->renderable->externalblogtext, 'externalblog');
        }

// Closing subject tag and header tag.
        $o .= $this->output->container_end();
        $o .= $this->output->container_end();

// Post content.
        $o .= $this->output->container_start('row maincontent clearfix');

// Entry.
        $o .= $this->output->container_start('no-overflow content ');

// Determine text for publish state.
        switch ($entry->publishstate) {
            case 'draft':
                $blogtype = get_string('publishtonoone', 'blog');
                break;
            case 'site':
                $blogtype = get_string('publishtosite', 'blog');
                break;
            case 'public':
                $blogtype = get_string('publishtoworld', 'blog');
                break;
            default:
                $blogtype = '';
                break;

}
        $o .= $this->output->container($blogtype, 'audience');

// Attachments.
        $attachmentsoutputs = array();
        if ($entry->renderable->attachments) {
            foreach ($entry->renderable->attachments as $attachment) {
                $o .= $this->render($attachment, false);
            }
        }

// Body.
        $o .= format_text($entry->summary, $entry->summaryformat, array('overflowdiv' => true));

if (!empty($entry->uniquehash)) {
            // Uniquehash is used as a link to an external blog.
            $url = clean_param($entry->uniquehash, PARAM_URL);
            if (!empty($url)) {
                $o .= $this->output->container_start('externalblog');
                $o .= html_writer::link($url, get_string('linktooriginalentry', 'blog'));
                $o .= $this->output->container_end();
            }
        }

// Links to tags.
        $o .= $this->output->tag_list(core_tag_tag::get_item_tags('core', 'post', $entry->id));

// Add associations.
        if (!empty($CFG->useblogassociations) && !empty($entry->renderable->blogassociations)) {

// First find and show the associated course.
            $assocstr = '';
            $coursesarray = array();
            foreach ($entry->renderable->blogassociations as $assocrec) {
                if ($assocrec->contextlevel == CONTEXT_COURSE) {
                    $coursesarray[] = $this->output->action_icon($assocrec->url, $assocrec->icon, null, array(), true);
                }
            }
            if (!empty($coursesarray)) {
                $assocstr .= get_string('associated', 'blog', get_string('course')) . ': ' . implode(', ', $coursesarray);
            }

// Now show mod association.
            $modulesarray = array();
            foreach ($entry->renderable->blogassociations as $assocrec) {
                if ($assocrec->contextlevel == CONTEXT_MODULE) {
                    $str = get_string('associated', 'blog', $assocrec->type) . ': ';
                    $str .= $this->output->action_icon($assocrec->url, $assocrec->icon, null, array(), true);
                    $modulesarray[] = $str;
                }
            }
            if (!empty($modulesarray)) {
                if (!empty($coursesarray)) {
                    $assocstr .= '<br/>';
                }
                $assocstr .= implode('<br/>', $modulesarray);
            }

// Adding the asociations to the output.
            $o .= $this->output->container($assocstr, 'tags');
        }

if ($entry->renderable->unassociatedentry) {
            $o .= $this->output->container(get_string('associationunviewable', 'blog'), 'noticebox');
        }

// Commands.
        $o .= $this->output->container_start('commands');
        if ($entry->renderable->usercanedit) {

// External blog entries should not be edited.
            if (empty($entry->uniquehash)) {
                $o .= html_writer::link(new moodle_url('/blog/edit.php',
                                                        array('action' => 'edit', 'entryid' => $entry->id)),
                                                        $stredit) . ' | ';
            }
            $o .= html_writer::link(new moodle_url('/blog/edit.php',
                                                    array('action' => 'delete', 'entryid' => $entry->id)),
                                                    $strdelete) . ' | ';
        }

$entryurl = new moodle_url('/blog/index.php', array('entryid' => $entry->id));
        $o .= html_writer::link($entryurl, get_string('permalink', 'blog'));

$o .= $this->output->container_end();

// Last modification.
        if ($entry->created != $entry->lastmodified) {
            $o .= $this->output->container(' [ '.get_string('modified').': '.userdate($entry->lastmodified).' ]');
        }

// Comments.
        if (!empty($entry->renderable->comment)) {
            $o .= $entry->renderable->comment->output(true);
        }

$o .= $this->output->container_end();

// Closing maincontent div.
        $o .= $this->output->container(' ', 'side options');
        $o .= $this->output->container_end();

$o .= $this->output->container_end();

return $o;
    }

/**
     * Renders an entry attachment
     *
     * Print link for non-images and returns images as HTML
     *
     * @param blog_entry_attachment $attachment
     * @return string List of attachments depending on the $return input
     */
    public function render_blog_entry_attachment(blog_entry_attachment $attachment) {

$syscontext = context_system::instance();

// Image attachments don't get printed as links.
        if (file_mimetype_in_typegroup($attachment->file->get_mimetype(), 'web_image')) {
            $attrs = array('src' => $attachment->url, 'alt' => '');
            $o = html_writer::empty_tag('img', $attrs);
            $class = 'attachedimages';
        } else {
            $image = $this->output->pix_icon(file_file_icon($attachment->file),
                                             $attachment->filename,
                                             'moodle',
                                             array('class' => 'icon'));
            $o = html_writer::link($attachment->url, $image);
            $o .= format_text(html_writer::link($attachment->url, $attachment->filename),
                              FORMAT_HTML,
                              array('context' => $syscontext));
            $class = 'attachments';
        }

return $this->output->container($o, $class);
    }
}