throw new SharingCart_RepositoryException('Repository URL was missing');
    }
    if (empty($config[$repo_id]->instance)) {
        throw new SharingCart_RepositoryException('Repository course ID was missing');
    }
    if (empty($config[$repo_id]->username)) {
        throw new SharingCart_RepositoryException('Repository username was missing');
    }
    $zip_path = make_user_directory($USER->id, true) . '/' . $sharing_cart->file;
    $zip_data = file_get_contents($zip_path);
    $form = new MoodleQuickForm('upload', 'post', $config[$repo_id]->url . '/course/format/repository/material.php');
    $form->addElement('hidden', 'mode', 'upload');
    $form->addElement('hidden', 'id', $config[$repo_id]->instance);
    $form->addElement('hidden', 'username', $config[$repo_id]->username);
    $form->addElement('hidden', 'password', $config[$repo_id]->password);
    $form->addElement('hidden', 'icon', $sharing_cart->icon);
    $form->addElement('hidden', 'type', $sharing_cart->name);
    $form->addElement('hidden', 'title', $sharing_cart->text);
    $form->addElement('hidden', 'file', base64_encode($zip_data));
    $form->addElement('hidden', 'sha1', sha1($zip_data));
    $form->addElement('hidden', 'usersite', $CFG->wwwroot);
    $form->addElement('hidden', 'sitename', $SITE->fullname);
    $icon = sharing_cart_lib::get_icon($sharing_cart->name, $sharing_cart->icon);
    $text = '<span class="icon">' . $icon . '</span><span>' . $sharing_cart->text . '</span>';
    $form->addElement('static', NULL, '', $text);
    $form->addElement('static', NULL, '', SharingCart_Repository::getString('confirm_upload'));
    $form->addElement('submit', 'upload', SharingCart_Repository::getString('upload'));
    SharingCart_Repository::printForm($form, SharingCart_Repository::getString('upload_to_repository'), $course_id);
} catch (Exception $e) {
    error((string) $e);
}
                }
                $sharing_cart = new stdClass();
                $sharing_cart->user = $USER->id;
                $sharing_cart->name = $type;
                $sharing_cart->icon = $icon;
                $sharing_cart->text = $text;
                $sharing_cart->time = time();
                $sharing_cart->file = $zip_name;
                sharing_cart_table::insert_record($sharing_cart);
                $completes[$id] = TRUE;
            }
        }
        if (empty($type) && empty($icon)) {
            $img = '<img src="' . $CFG->pixpath . '/f/unknown.gif" alt="" class="icon" />';
        } else {
            $img = sharing_cart_lib::get_icon($type, $icon);
        }
        echo '
			<tr>
				<td class="icon">' . $img . '</td><td>' . htmlspecialchars($text) . '</td>
				<td class="separator"><span class="arrow sep">&#x25BA;</span></td>
				<td class="download">
					<span style="display:none;">
						<input type="hidden" name="materials[' . $id . ']" value="' . htmlspecialchars($fields) . '" />
					</span>';
        if (!empty($completes[$id])) {
            echo '
					<span style="display:none;">
						<input type="hidden" name="completes[' . $id . ']" value="true" />
					</span>
					<span>' . $str_complete . '</span>';
    function get_content()
    {
        global $CFG, $USER, $COURSE, $DB, $PAGE;
        //error_reporting(E_ALL);
        if ($this->content !== NULL) {
            return $this->content;
        }
        if (empty($this->instance)) {
            return $this->content = '';
        }
        if (empty($USER->id)) {
            return $this->content = '';
        }
        /*$course  = $COURSE->id ==  $this->instance->pageid
                        ? $COURSE
        	 : $DB->get_record('course', array('id' => $this->instance->pageid));*/
        $course = $COURSE;
        $context = get_context_instance(CONTEXT_COURSE, $course->id);
        $editing = $PAGE->user_is_editing() && has_capability('moodle/course:manageactivities', $context);
        if (!$editing) {
            return $this->content = '';
        }
        // DBから取得したアイテムを表示すべきものだけ抜き出し、木構造化
        // また、ここでドロップダウンリスト用にフォルダ名列挙もしておく
        $tree = array();
        $dirs = array();
        if ($shared_items = $DB->get_records('sharing_cart', array("userid" => $USER->id))) {
            foreach ($shared_items as $shared_item) {
                $node =& self::path_to_node($tree, explode('/', $shared_item->tree));
                $node[] = array('id' => $shared_item->id, 'path' => $shared_item->tree, 'icon' => sharing_cart_lib::get_icon($shared_item->name, $shared_item->icon), 'text' => $shared_item->text, 'sort' => $shared_item->sort);
                $dirs[$shared_item->tree] = $shared_item->tree;
            }
            self::sort_tree($tree);
            unset($dirs['']);
            usort($dirs, 'strnatcasecmp');
        }
        // ツリーをHTMLにレンダリング
        $text = "<ul class=\"list\">\n" . self::render_tree($tree) . '</ul>';
        require_once dirname(__FILE__) . '/shared/SharingCart_CourseScript.php';
        $courseScript = new SharingCart_CourseScript();
        $js_import = $courseScript->import($CFG->wwwroot . '/blocks/sharing_cart/sharing_cart.js', true);
        foreach (sharing_cart_plugins::get_imports() as $import) {
            $js_import .= $courseScript->import($CFG->wwwroot . '/blocks/sharing_cart/plugins/' . $import, true);
        }
        $js_pre = '
<script type="text/javascript">
//<![CDATA[
var sharing_cart = new sharing_cart_handler({
	wwwroot     : "' . $CFG->wwwroot . '",
	instance_id : ' . $this->instance->id . ',
	course_id   : ' . $course->id . ',
	return_url  : "' . urlencode($_SERVER['REQUEST_URI']) . '",
	directories : [
		' . implode(',
		', array_map(create_function('$dir', '
			return "\\"".addslashes($dir)."\\"";
		'), $dirs)) . '
	],
	str : {
		rootdir        : "' . get_string('rootdir', 'block_sharing_cart') . '",
		notarget       : "' . get_string('notarget', 'block_sharing_cart') . '",
		copyhere       : "' . get_string('copyhere', 'block_sharing_cart') . '",
		movehere       : "' . get_string('movehere') . '",
		edit           : "' . get_string('edit') . '",
		cancel         : "' . get_string('cancel') . '",
		backup         : "' . get_string('backup', 'block_sharing_cart') . '",
		clipboard      : "' . addslashes(get_string('clipboard', 'block_sharing_cart')) . '",
		confirm_backup : "' . addslashes(get_string('confirm_backup', 'block_sharing_cart')) . '",
		confirm_delete : "' . addslashes(get_string('confirm_delete', 'block_sharing_cart')) . '"
	}
});
' . implode('
', sharing_cart_plugins::get_scripts()) . '
//]]>
</script>
';
        $js_post = $courseScript->addLoadEvent('sharing_cart.init();', true);
        $footer_html = '';
        $footers = sharing_cart_plugins::get_footers();
        if (!empty($footers)) {
            foreach ($footers as &$footer) {
                $footer = '<div style="margin-top:4px; border-top:1px dashed; padding-top:1px;">' . $footer . '</div>';
            }
            $footer_html = implode('', $footers);
        }
        $this->content = new stdClass();
        $this->content->text = $js_import . $js_pre . $text;
        $this->content->footer = '<div id="sharing_cart_header">' . self::get_header_icons() . implode('', sharing_cart_plugins::get_headers()) . $footer_html . $js_post;
        return $this->content;
    }
				<input type="hidden" name="course" value="', $course_id, '" />
			</div>
			<div><label style="cursor:default;">
				<input type="checkbox" checked="checked" onclick="check_all(this);"
				 style="height:16px; vertical-align:middle;" />
				<span>', get_string('checkall'), '</span>
			</label></div>';
    $i = 0;
    echo '
			<ul style="list-style-type:none; float:left;">';
    foreach ($items as $id => $item) {
        echo '
				<li style="clear:left;">
					<input type="checkbox" name="delete[' . $id . ']" checked="checked" onclick="check();"
					 style="float:left; height:16px;" id="delete_' . $id . '" />
					<div style="float:left;">', sharing_cart_lib::get_icon($item->name, $item->icon), '</div>
					<div style="float:left;">
						<label for="delete_' . $id . '">', htmlspecialchars($item->text), '</label>
					</div>
				</li>';
        if (++$i % 10 == 0) {
            echo '
			</ul>
			<ul style="list-style-type:none; float:left;">';
        }
    }
    echo '
			</ul>';
    echo '
			<div style="clear:both;"><!-- clear floating --></div>
			<div>