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<?php
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// This file is part of Moodle - http://moodle.org/
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//
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// Moodle is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// Moodle is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with Moodle. If not, see <http://www.gnu.org/licenses/>.
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/**
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* Private resource module utility functions
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*
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* @package mod_resource
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* @copyright 2009 Petr Skoda {@link http://skodak.org}
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* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
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*/
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defined('MOODLE_INTERNAL') || die;
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require_once("$CFG->libdir/filelib.php");
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require_once("$CFG->libdir/resourcelib.php");
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require_once("$CFG->dirroot/mod/resource/lib.php");
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/**
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* Redirected to migrated resource if needed,
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* return if incorrect parameters specified
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* @param int $oldid
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* @param int $cmid
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* @return void
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*/
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function resource_redirect_if_migrated($oldid, $cmid) {
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global $DB, $CFG;
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if ($oldid) {
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$old = $DB->get_record('resource_old', array('oldid'=>$oldid));
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} else {
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$old = $DB->get_record('resource_old', array('cmid'=>$cmid));
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}
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if (!$old) {
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return;
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}
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redirect("$CFG->wwwroot/mod/$old->newmodule/view.php?id=".$old->cmid);
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}
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/**
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* Display embedded resource file.
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* @param object $resource
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* @param object $cm
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* @param object $course
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* @param stored_file $file main file
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* @return does not return
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*/
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function resource_display_embed($resource, $cm, $course, $file) {
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global $PAGE, $OUTPUT;
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$clicktoopen = resource_get_clicktoopen($file, $resource->revision);
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$context = context_module::instance($cm->id);
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$moodleurl = moodle_url::make_pluginfile_url($context->id, 'mod_resource', 'content', $resource->revision,
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$file->get_filepath(), $file->get_filename());
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$mimetype = $file->get_mimetype();
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$title = $resource->name;
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$extension = resourcelib_get_extension($file->get_filename());
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$mediamanager = core_media_manager::instance($PAGE);
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$embedoptions = array(
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core_media_manager::OPTION_TRUSTED => true,
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core_media_manager::OPTION_BLOCK => true,
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);
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if (file_mimetype_in_typegroup($mimetype, 'web_image')) { // It's an image
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$code = resourcelib_embed_image($moodleurl->out(), $title);
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} else if ($mimetype === 'application/pdf') {
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// PDF document
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$code = resourcelib_embed_pdf($moodleurl->out(), $title, $clicktoopen);
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} else if ($mediamanager->can_embed_url($moodleurl, $embedoptions)) {
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// Media (audio/video) file.
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$code = $mediamanager->embed_url($moodleurl, $title, 0, 0, $embedoptions);
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} else {
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// We need a way to discover if we are loading remote docs inside an iframe.
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$moodleurl->param('embed', 1);
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// anything else - just try object tag enlarged as much as possible
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$code = resourcelib_embed_general($moodleurl, $title, $clicktoopen, $mimetype);
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}
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// Let the module handle the display.
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$PAGE->activityheader->set_description(resource_get_intro($resource, $cm));
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resource_print_header($resource, $cm, $course);
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echo format_text($code, FORMAT_HTML, ['noclean' => true]);
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echo $OUTPUT->footer();
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die;
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}
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/**
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* Display resource frames.
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* @param object $resource
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* @param object $cm
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* @param object $course
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* @param stored_file $file main file
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* @return does not return
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*/
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function resource_display_frame($resource, $cm, $course, $file) {
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global $PAGE, $OUTPUT, $CFG;
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$frame = optional_param('frameset', 'main', PARAM_ALPHA);
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if ($frame === 'top') {
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$PAGE->set_pagelayout('frametop');
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$PAGE->activityheader->set_description(resource_get_intro($resource, $cm, true));
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resource_print_header($resource, $cm, $course);
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echo $OUTPUT->footer();
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die;
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} else {
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$config = get_config('resource');
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$context = context_module::instance($cm->id);
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$path = '/'.$context->id.'/mod_resource/content/'.$resource->revision.$file->get_filepath().$file->get_filename();
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$fileurl = file_encode_url($CFG->wwwroot.'/pluginfile.php', $path, false);
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$navurl = "$CFG->wwwroot/mod/resource/view.php?id=$cm->id&frameset=top";
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$title = strip_tags(format_string($course->shortname.': '.$resource->name));
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$framesize = $config->framesize;
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$contentframetitle = s(format_string($resource->name));
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$modulename = s(get_string('modulename','resource'));
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$dir = get_string('thisdirection', 'langconfig');
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$file = <<<EOF
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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Frameset//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-frameset.dtd">
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<html dir="$dir">
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<head>
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<meta http-equiv="content-type" content="text/html; charset=utf-8" />
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<title>$title</title>
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</head>
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<frameset rows="$framesize,*">
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<frame src="$navurl" title="$modulename" />
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<frame src="$fileurl" title="$contentframetitle" />
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</frameset>
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</html>
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EOF;
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@header('Content-Type: text/html; charset=utf-8');
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echo $file;
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die;
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}
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}
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/**
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* Internal function - create click to open text with link.
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*/
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function resource_get_clicktoopen($file, $revision, $extra='') {
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global $CFG;
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$filename = $file->get_filename();
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$path = '/'.$file->get_contextid().'/mod_resource/content/'.$revision.$file->get_filepath().$file->get_filename();
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$fullurl = file_encode_url($CFG->wwwroot.'/pluginfile.php', $path, false);
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$string = get_string('clicktoopen2', 'resource', "<a href=\"$fullurl\" $extra>$filename</a>");
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return $string;
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}
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/**
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* Internal function - create click to open text with link.
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*/
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function resource_get_clicktodownload($file, $revision) {
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global $CFG;
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$filename = $file->get_filename();
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$path = '/'.$file->get_contextid().'/mod_resource/content/'.$revision.$file->get_filepath().$file->get_filename();
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$fullurl = file_encode_url($CFG->wwwroot.'/pluginfile.php', $path, true);
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$string = get_string('clicktodownload', 'resource', "<a href=\"$fullurl\">$filename</a>");
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return $string;
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}
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/**
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* Print resource info and workaround link when JS not available.
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* @param object $resource
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* @param object $cm
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* @param object $course
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* @param stored_file $file main file
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* @return does not return
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*/
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function resource_print_workaround($resource, $cm, $course, $file) {
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global $CFG, $OUTPUT, $PAGE;
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// Let the module handle the display.
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$PAGE->activityheader->set_description(resource_get_intro($resource, $cm, true));
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resource_print_header($resource, $cm, $course);
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$resource->mainfile = $file->get_filename();
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echo '<div class="resourceworkaround">';
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switch (resource_get_final_display_type($resource)) {
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case RESOURCELIB_DISPLAY_POPUP:
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$path = '/'.$file->get_contextid().'/mod_resource/content/'.$resource->revision.$file->get_filepath().$file->get_filename();
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$fullurl = file_encode_url($CFG->wwwroot.'/pluginfile.php', $path, false);
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$options = empty($resource->displayoptions) ? [] : (array) unserialize_array($resource->displayoptions);
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$width = empty($options['popupwidth']) ? 620 : $options['popupwidth'];
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$height = empty($options['popupheight']) ? 450 : $options['popupheight'];
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$wh = "width=$width,height=$height,toolbar=no,location=no,menubar=no,copyhistory=no,status=no,directories=no,scrollbars=yes,resizable=yes";
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$extra = "onclick=\"window.open('$fullurl', '', '$wh'); return false;\"";
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echo resource_get_clicktoopen($file, $resource->revision, $extra);
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break;
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case RESOURCELIB_DISPLAY_NEW:
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$extra = 'onclick="this.target=\'_blank\'"';
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echo resource_get_clicktoopen($file, $resource->revision, $extra);
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break;
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case RESOURCELIB_DISPLAY_DOWNLOAD:
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echo resource_get_clicktodownload($file, $resource->revision);
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break;
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case RESOURCELIB_DISPLAY_OPEN:
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default:
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echo resource_get_clicktoopen($file, $resource->revision);
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break;
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}
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echo '</div>';
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echo $OUTPUT->footer();
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die;
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}
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/**
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* Print resource header.
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* @param object $resource
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* @param object $cm
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* @param object $course
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* @return void
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*/
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function resource_print_header($resource, $cm, $course) {
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global $PAGE, $OUTPUT;
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$PAGE->set_title($course->shortname.': '.$resource->name);
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$PAGE->set_heading($course->fullname);
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$PAGE->set_activity_record($resource);
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echo $OUTPUT->header();
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}
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/**
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* Gets details of the file to cache in course cache to be displayed using {@link resource_get_optional_details()}
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*
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* @param object $resource Resource table row (only property 'displayoptions' is used here)
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* @param object $cm Course-module table row
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* @return string Size and type or empty string if show options are not enabled
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*/
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function resource_get_file_details($resource, $cm) {
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$options = empty($resource->displayoptions) ? [] : (array) unserialize_array($resource->displayoptions);
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$filedetails = array();
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if (!empty($options['showsize']) || !empty($options['showtype']) || !empty($options['showdate'])) {
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$context = context_module::instance($cm->id);
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$fs = get_file_storage();
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$files = $fs->get_area_files($context->id, 'mod_resource', 'content', 0, 'sortorder DESC, id ASC', false);
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// For a typical file resource, the sortorder is 1 for the main file
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// and 0 for all other files. This sort approach is used just in case
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// there are situations where the file has a different sort order.
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$mainfile = $files ? reset($files) : null;
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if (!empty($options['showsize'])) {
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$filedetails['size'] = 0;
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foreach ($files as $file) {
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// This will also synchronize the file size for external files if needed.
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$filedetails['size'] += $file->get_filesize();
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if ($file->get_repository_id()) {
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// If file is a reference the 'size' attribute can not be cached.
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$filedetails['isref'] = true;
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}
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}
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}
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if (!empty($options['showtype'])) {
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if ($mainfile) {
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$filedetails['type'] = get_mimetype_description($mainfile);
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$filedetails['mimetype'] = $mainfile->get_mimetype();
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$filedetails['extension'] = strtoupper(resourcelib_get_extension($mainfile->get_filename()));
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// Only show type if it is not unknown.
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if ($filedetails['type'] === get_mimetype_description('document/unknown')) {
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$filedetails['type'] = '';
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}
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} else {
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$filedetails['type'] = '';
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}
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}
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if (!empty($options['showdate'])) {
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if ($mainfile) {
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// Modified date may be up to several minutes later than uploaded date just because
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// teacher did not submit the form promptly. Give teacher up to 5 minutes to do it.
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if ($mainfile->get_timemodified() > $mainfile->get_timecreated() + 5 * MINSECS) {
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$filedetails['modifieddate'] = $mainfile->get_timemodified();
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} else {
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$filedetails['uploadeddate'] = $mainfile->get_timecreated();
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}
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if ($mainfile->get_repository_id()) {
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// If main file is a reference the 'date' attribute can not be cached.
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$filedetails['isref'] = true;
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}
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} else {
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$filedetails['uploadeddate'] = '';
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}
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}
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}
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return $filedetails;
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}
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/**
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* Gets optional details for a resource, depending on resource settings.
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*
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* Result may include the file size and type if those settings are chosen,
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* or blank if none.
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*
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* @param object $resource Resource table row (only property 'displayoptions' is used here)
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* @param object $cm Course-module table row
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* @param bool $showtype Whether the file type should be displayed or not (regardless the display option is enabled).
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* @return string Size and type or empty string if show options are not enabled
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*/
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function resource_get_optional_details($resource, $cm, bool $showtype = true) {
|
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|
336 |
global $DB;
|
|
|
337 |
|
|
|
338 |
$details = '';
|
|
|
339 |
|
|
|
340 |
$options = empty($resource->displayoptions) ? [] : (array) unserialize_array($resource->displayoptions);
|
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|
341 |
if (!empty($options['showsize']) || ($showtype && !empty($options['showtype'])) || !empty($options['showdate'])) {
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|
|
342 |
if (!array_key_exists('filedetails', $options)) {
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|
343 |
$filedetails = resource_get_file_details($resource, $cm);
|
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|
344 |
} else {
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|
345 |
$filedetails = $options['filedetails'];
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|
346 |
}
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|
347 |
$size = '';
|
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|
348 |
$type = '';
|
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|
349 |
$date = '';
|
|
|
350 |
$langstring = '';
|
|
|
351 |
$infodisplayed = 0;
|
|
|
352 |
if (!empty($options['showsize'])) {
|
|
|
353 |
if (!empty($filedetails['size'])) {
|
|
|
354 |
$size = display_size($filedetails['size']);
|
|
|
355 |
$langstring .= 'size';
|
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|
356 |
$infodisplayed += 1;
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|
|
357 |
}
|
|
|
358 |
}
|
|
|
359 |
if ($showtype && !empty($options['showtype'])) {
|
|
|
360 |
if (!empty($filedetails['type'])) {
|
|
|
361 |
$type = $filedetails['extension'];
|
|
|
362 |
$langstring .= 'type';
|
|
|
363 |
$infodisplayed += 1;
|
|
|
364 |
}
|
|
|
365 |
}
|
|
|
366 |
if (!empty($options['showdate']) && (!empty($filedetails['modifieddate']) || !empty($filedetails['uploadeddate']))) {
|
|
|
367 |
if (!empty($filedetails['modifieddate'])) {
|
|
|
368 |
$date = get_string('modifieddate', 'mod_resource', userdate($filedetails['modifieddate'],
|
|
|
369 |
get_string('strftimedatetimeshort', 'langconfig')));
|
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|
370 |
} else if (!empty($filedetails['uploadeddate'])) {
|
|
|
371 |
$date = get_string('uploadeddate', 'mod_resource', userdate($filedetails['uploadeddate'],
|
|
|
372 |
get_string('strftimedatetimeshort', 'langconfig')));
|
|
|
373 |
}
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|
|
374 |
$langstring .= 'date';
|
|
|
375 |
$infodisplayed += 1;
|
|
|
376 |
}
|
|
|
377 |
|
|
|
378 |
if ($infodisplayed > 1) {
|
|
|
379 |
$details = get_string("resourcedetails_{$langstring}", 'resource',
|
|
|
380 |
(object)array('size' => $size, 'type' => $type, 'date' => $date));
|
|
|
381 |
} else {
|
|
|
382 |
// Only one of size, type and date is set, so just append.
|
|
|
383 |
$details = $size . $type . $date;
|
|
|
384 |
}
|
|
|
385 |
}
|
|
|
386 |
|
|
|
387 |
return $details;
|
|
|
388 |
}
|
|
|
389 |
|
|
|
390 |
/**
|
|
|
391 |
* Gets optional file type extension for a resource, depending on resource settings.
|
|
|
392 |
*
|
|
|
393 |
* @param object $resource Resource table row (only property 'displayoptions' is used here)
|
|
|
394 |
* @param object $cm Course-module table row
|
|
|
395 |
* @return string File extension or null if showtype option is not enabled
|
|
|
396 |
*/
|
|
|
397 |
function resource_get_optional_filetype($resource, $cm): ?string {
|
|
|
398 |
$filetype = null;
|
|
|
399 |
|
|
|
400 |
$options = empty($resource->displayoptions) ? [] : (array) unserialize_array($resource->displayoptions);
|
|
|
401 |
if (empty($options['showtype'])) {
|
|
|
402 |
// Show type option is disabled; early return null filetype.
|
|
|
403 |
return $filetype;
|
|
|
404 |
}
|
|
|
405 |
|
|
|
406 |
if (!array_key_exists('filedetails', $options)) {
|
|
|
407 |
$filedetails = resource_get_file_details($resource, $cm);
|
|
|
408 |
} else {
|
|
|
409 |
$filedetails = $options['filedetails'];
|
|
|
410 |
}
|
|
|
411 |
if (!empty($filedetails['type'])) {
|
|
|
412 |
$filetype = $filedetails['extension'];
|
|
|
413 |
}
|
|
|
414 |
|
|
|
415 |
return $filetype;
|
|
|
416 |
}
|
|
|
417 |
|
|
|
418 |
/**
|
|
|
419 |
* Get resource introduction.
|
|
|
420 |
*
|
|
|
421 |
* @param object $resource
|
|
|
422 |
* @param object $cm
|
|
|
423 |
* @param bool $ignoresettings print even if not specified in modedit
|
|
|
424 |
* @return string
|
|
|
425 |
*/
|
|
|
426 |
function resource_get_intro(object $resource, object $cm, bool $ignoresettings = false): string {
|
|
|
427 |
$options = empty($resource->displayoptions) ? [] : (array) unserialize_array($resource->displayoptions);
|
|
|
428 |
|
|
|
429 |
$extraintro = resource_get_optional_details($resource, $cm);
|
|
|
430 |
if ($extraintro) {
|
|
|
431 |
// Put a paragaph tag around the details
|
|
|
432 |
$extraintro = html_writer::tag('p', $extraintro, array('class' => 'resourcedetails'));
|
|
|
433 |
}
|
|
|
434 |
|
|
|
435 |
$content = "";
|
|
|
436 |
if ($ignoresettings || !empty($options['printintro']) || $extraintro) {
|
|
|
437 |
$resourceintro = !empty($options['printintro']) && !html_is_blank($resource->intro);
|
|
|
438 |
|
|
|
439 |
if ($resourceintro) {
|
|
|
440 |
$content .= format_module_intro('resource', $resource, $cm->id);
|
|
|
441 |
}
|
|
|
442 |
|
|
|
443 |
if ($extraintro) {
|
|
|
444 |
$content .= $extraintro;
|
|
|
445 |
}
|
|
|
446 |
}
|
|
|
447 |
|
|
|
448 |
return $content;
|
|
|
449 |
}
|
|
|
450 |
|
|
|
451 |
/**
|
|
|
452 |
* Print warning that instance not migrated yet.
|
|
|
453 |
* @param object $resource
|
|
|
454 |
* @param object $cm
|
|
|
455 |
* @param object $course
|
|
|
456 |
* @return void, does not return
|
|
|
457 |
*/
|
|
|
458 |
function resource_print_tobemigrated($resource, $cm, $course) {
|
|
|
459 |
global $DB, $OUTPUT, $PAGE;
|
|
|
460 |
$PAGE->activityheader->set_description(resource_get_intro($resource, $cm));
|
|
|
461 |
$resource_old = $DB->get_record('resource_old', array('oldid'=>$resource->id));
|
|
|
462 |
resource_print_header($resource, $cm, $course);
|
|
|
463 |
echo $OUTPUT->notification(get_string('notmigrated', 'resource', $resource_old->type));
|
|
|
464 |
echo $OUTPUT->footer();
|
|
|
465 |
die;
|
|
|
466 |
}
|
|
|
467 |
|
|
|
468 |
/**
|
|
|
469 |
* Print warning that file can not be found.
|
|
|
470 |
* @param object $resource
|
|
|
471 |
* @param object $cm
|
|
|
472 |
* @param object $course
|
|
|
473 |
* @return void, does not return
|
|
|
474 |
*/
|
|
|
475 |
function resource_print_filenotfound($resource, $cm, $course) {
|
|
|
476 |
global $DB, $OUTPUT, $PAGE;
|
|
|
477 |
|
|
|
478 |
$resource_old = $DB->get_record('resource_old', array('oldid'=>$resource->id));
|
|
|
479 |
$PAGE->activityheader->set_description(resource_get_intro($resource, $cm));
|
|
|
480 |
resource_print_header($resource, $cm, $course);
|
|
|
481 |
if ($resource_old) {
|
|
|
482 |
echo $OUTPUT->notification(get_string('notmigrated', 'resource', $resource_old->type));
|
|
|
483 |
} else {
|
|
|
484 |
echo $OUTPUT->notification(get_string('filenotfound', 'resource'));
|
|
|
485 |
}
|
|
|
486 |
echo $OUTPUT->footer();
|
|
|
487 |
die;
|
|
|
488 |
}
|
|
|
489 |
|
|
|
490 |
/**
|
|
|
491 |
* Decide the best display format.
|
|
|
492 |
* @param object $resource
|
|
|
493 |
* @return int display type constant
|
|
|
494 |
*/
|
|
|
495 |
function resource_get_final_display_type($resource) {
|
|
|
496 |
global $CFG, $PAGE;
|
|
|
497 |
|
|
|
498 |
if ($resource->display != RESOURCELIB_DISPLAY_AUTO) {
|
|
|
499 |
return $resource->display;
|
|
|
500 |
}
|
|
|
501 |
|
|
|
502 |
if (empty($resource->mainfile)) {
|
|
|
503 |
return RESOURCELIB_DISPLAY_DOWNLOAD;
|
|
|
504 |
} else {
|
|
|
505 |
$mimetype = mimeinfo('type', $resource->mainfile);
|
|
|
506 |
}
|
|
|
507 |
|
|
|
508 |
if (file_mimetype_in_typegroup($mimetype, 'archive')) {
|
|
|
509 |
return RESOURCELIB_DISPLAY_DOWNLOAD;
|
|
|
510 |
}
|
|
|
511 |
if (file_mimetype_in_typegroup($mimetype, array('web_image', '.htm', 'web_video', 'web_audio'))) {
|
|
|
512 |
return RESOURCELIB_DISPLAY_EMBED;
|
|
|
513 |
}
|
|
|
514 |
|
|
|
515 |
// let the browser deal with it somehow
|
|
|
516 |
return RESOURCELIB_DISPLAY_OPEN;
|
|
|
517 |
}
|
|
|
518 |
|
|
|
519 |
/**
|
|
|
520 |
* File browsing support class
|
|
|
521 |
*/
|
|
|
522 |
class resource_content_file_info extends file_info_stored {
|
|
|
523 |
public function get_parent() {
|
|
|
524 |
if ($this->lf->get_filepath() === '/' and $this->lf->get_filename() === '.') {
|
|
|
525 |
return $this->browser->get_file_info($this->context);
|
|
|
526 |
}
|
|
|
527 |
return parent::get_parent();
|
|
|
528 |
}
|
|
|
529 |
public function get_visible_name() {
|
|
|
530 |
if ($this->lf->get_filepath() === '/' and $this->lf->get_filename() === '.') {
|
|
|
531 |
return $this->topvisiblename;
|
|
|
532 |
}
|
|
|
533 |
return parent::get_visible_name();
|
|
|
534 |
}
|
|
|
535 |
}
|
|
|
536 |
|
|
|
537 |
function resource_set_mainfile($data) {
|
|
|
538 |
global $DB;
|
|
|
539 |
$fs = get_file_storage();
|
|
|
540 |
$cmid = $data->coursemodule;
|
|
|
541 |
$draftitemid = $data->files;
|
|
|
542 |
|
|
|
543 |
$context = context_module::instance($cmid);
|
|
|
544 |
if ($draftitemid) {
|
|
|
545 |
$options = array('subdirs' => true, 'embed' => false);
|
|
|
546 |
if ($data->display == RESOURCELIB_DISPLAY_EMBED) {
|
|
|
547 |
$options['embed'] = true;
|
|
|
548 |
}
|
|
|
549 |
file_save_draft_area_files($draftitemid, $context->id, 'mod_resource', 'content', 0, $options);
|
|
|
550 |
}
|
|
|
551 |
$files = $fs->get_area_files($context->id, 'mod_resource', 'content', 0, 'sortorder', false);
|
|
|
552 |
if (count($files) == 1) {
|
|
|
553 |
// only one file attached, set it as main file automatically
|
|
|
554 |
$file = reset($files);
|
|
|
555 |
file_set_sortorder($context->id, 'mod_resource', 'content', 0, $file->get_filepath(), $file->get_filename(), 1);
|
|
|
556 |
}
|
|
|
557 |
}
|