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1148 lines
41 KiB
1148 lines
41 KiB
<?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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* Functions and classes for commenting
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*
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* @package core
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* @copyright 2010 Dongsheng Cai {@link http://dongsheng.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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/**
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* Comment is helper class to add/delete comments anywhere in moodle
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*
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* @package core
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* @category comment
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* @copyright 2010 Dongsheng Cai {@link http://dongsheng.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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class comment {
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/** @var int there may be several comment box in one page so we need a client_id to recognize them */
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private $cid;
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/** @var string commentarea is used to specify different parts shared the same itemid */
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private $commentarea;
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/** @var int itemid is used to associate with commenting content */
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private $itemid;
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/** @var string this html snippet will be used as a template to build comment content */
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private $template;
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/** @var int The context id for comments */
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private $contextid;
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/** @var stdClass The context itself */
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private $context;
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/** @var int The course id for comments */
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private $courseid;
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/** @var stdClass course module object, only be used to help find pluginname automatically */
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private $cm;
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/**
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* The component that this comment is for.
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*
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* It is STRONGLY recommended to set this.
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* Added as a database field in 2.9, old comments will have a null component.
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*
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* @var string
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*/
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private $component;
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/** @var string This is calculated by normalising the component */
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private $pluginname;
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/** @var string This is calculated by normalising the component */
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private $plugintype;
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/** @var bool Whether the user has the required capabilities/permissions to view comments. */
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private $viewcap = false;
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/** @var bool Whether the user has the required capabilities/permissions to post comments. */
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private $postcap = false;
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/** @var string to customize link text */
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private $linktext;
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/** @var bool If set to true then comment sections won't be able to be opened and closed instead they will always be visible. */
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protected $notoggle = false;
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/** @var bool If set to true comments are automatically loaded as soon as the page loads. */
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protected $autostart = false;
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/** @var bool If set to true the total count of comments is displayed when displaying comments. */
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protected $displaytotalcount = false;
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/** @var bool If set to true a cancel button will be shown on the form used to submit comments. */
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protected $displaycancel = false;
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/** @var int The number of comments associated with this comments params */
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protected $totalcommentcount = null;
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/**
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* Set to true to remove the col attribute from the textarea making it full width.
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* @var bool
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*/
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protected $fullwidth = false;
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/** @var bool Use non-javascript UI */
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private static $nonjs = false;
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/** @var int comment itemid used in non-javascript UI */
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private static $comment_itemid = null;
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/** @var int comment context used in non-javascript UI */
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private static $comment_context = null;
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/** @var string comment area used in non-javascript UI */
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private static $comment_area = null;
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/** @var string comment page used in non-javascript UI */
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private static $comment_page = null;
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/** @var string comment itemid component in non-javascript UI */
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private static $comment_component = null;
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/**
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* Construct function of comment class, initialise
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* class members
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*
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* @param stdClass $options {
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* context => context context to use for the comment [required]
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* component => string which plugin will comment being added to [required]
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* itemid => int the id of the associated item (forum post, glossary item etc) [required]
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* area => string comment area
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* cm => stdClass course module
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* course => course course object
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* client_id => string an unique id to identify comment area
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* autostart => boolean automatically expend comments
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* showcount => boolean display the number of comments
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* displaycancel => boolean display cancel button
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* notoggle => boolean don't show/hide button
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* linktext => string title of show/hide button
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* }
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*/
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public function __construct(stdClass $options) {
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$this->viewcap = false;
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$this->postcap = false;
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// setup client_id
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if (!empty($options->client_id)) {
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$this->cid = $options->client_id;
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} else {
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$this->cid = uniqid();
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}
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// setup context
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if (!empty($options->context)) {
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$this->context = $options->context;
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$this->contextid = $this->context->id;
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} else if(!empty($options->contextid)) {
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$this->contextid = $options->contextid;
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$this->context = context::instance_by_id($this->contextid);
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} else {
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print_error('invalidcontext');
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}
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if (!empty($options->component)) {
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// set and validate component
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$this->set_component($options->component);
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} else {
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// component cannot be empty
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throw new comment_exception('invalidcomponent');
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}
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// setup course
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// course will be used to generate user profile link
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if (!empty($options->course)) {
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$this->courseid = $options->course->id;
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} else if (!empty($options->courseid)) {
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$this->courseid = $options->courseid;
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} else {
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if ($coursecontext = $this->context->get_course_context(false)) {
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$this->courseid = $coursecontext->instanceid;
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} else {
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$this->courseid = SITEID;
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}
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}
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// setup coursemodule
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if (!empty($options->cm)) {
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$this->cm = $options->cm;
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} else {
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$this->cm = null;
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}
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// setup commentarea
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if (!empty($options->area)) {
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$this->commentarea = $options->area;
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}
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// setup itemid
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if (!empty($options->itemid)) {
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$this->itemid = $options->itemid;
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} else {
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$this->itemid = 0;
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}
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// setup customized linktext
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if (!empty($options->linktext)) {
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$this->linktext = $options->linktext;
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} else {
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$this->linktext = get_string('comments');
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}
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// setup options for callback functions
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$this->comment_param = new stdClass();
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$this->comment_param->context = $this->context;
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$this->comment_param->courseid = $this->courseid;
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$this->comment_param->cm = $this->cm;
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$this->comment_param->commentarea = $this->commentarea;
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$this->comment_param->itemid = $this->itemid;
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// setup notoggle
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if (!empty($options->notoggle)) {
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$this->set_notoggle($options->notoggle);
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}
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// setup notoggle
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if (!empty($options->autostart)) {
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$this->set_autostart($options->autostart);
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}
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// setup displaycancel
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if (!empty($options->displaycancel)) {
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$this->set_displaycancel($options->displaycancel);
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}
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// setup displaytotalcount
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if (!empty($options->showcount)) {
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$this->set_displaytotalcount($options->showcount);
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}
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// setting post and view permissions
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$this->check_permissions();
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// load template
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$this->template = html_writer::start_tag('div', array('class' => 'comment-message'));
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$this->template .= html_writer::start_tag('div', array('class' => 'comment-message-meta mr-3'));
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$this->template .= html_writer::tag('span', '___picture___', array('class' => 'picture'));
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$this->template .= html_writer::tag('span', '___name___', array('class' => 'user')) . ' - ';
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$this->template .= html_writer::tag('span', '___time___', array('class' => 'time'));
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$this->template .= html_writer::end_tag('div'); // .comment-message-meta
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$this->template .= html_writer::tag('div', '___content___', array('class' => 'text'));
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$this->template .= html_writer::end_tag('div'); // .comment-message
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if (!empty($this->plugintype)) {
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$this->template = plugin_callback($this->plugintype, $this->pluginname, 'comment', 'template', array($this->comment_param), $this->template);
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}
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unset($options);
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}
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/**
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* Receive nonjs comment parameters
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*
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* @param moodle_page $page The page object to initialise comments within
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* If not provided the global $PAGE is used
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*/
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public static function init(moodle_page $page = null) {
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global $PAGE;
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if (empty($page)) {
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$page = $PAGE;
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}
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// setup variables for non-js interface
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self::$nonjs = optional_param('nonjscomment', '', PARAM_ALPHANUM);
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self::$comment_itemid = optional_param('comment_itemid', '', PARAM_INT);
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self::$comment_component = optional_param('comment_component', '', PARAM_COMPONENT);
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self::$comment_context = optional_param('comment_context', '', PARAM_INT);
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self::$comment_page = optional_param('comment_page', '', PARAM_INT);
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self::$comment_area = optional_param('comment_area', '', PARAM_AREA);
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$page->requires->strings_for_js(array(
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'addcomment',
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'comments',
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'commentscount',
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'commentsrequirelogin',
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'deletecommentbyon'
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),
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'moodle'
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);
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}
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/**
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* Sets the component.
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*
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* This method shouldn't be public, changing the component once it has been set potentially
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* invalidates permission checks.
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* A coding_error is now thrown if code attempts to change the component.
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*
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* @throws coding_exception if you try to change the component after it has been set.
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* @param string $component
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*/
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public function set_component($component) {
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if (!empty($this->component) && $this->component !== $component) {
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throw new coding_exception('You cannot change the component of a comment once it has been set');
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}
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$this->component = $component;
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list($this->plugintype, $this->pluginname) = core_component::normalize_component($component);
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}
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/**
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* Determines if the user can view the comment.
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*
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* @param bool $value
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*/
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public function set_view_permission($value) {
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$this->viewcap = (bool)$value;
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}
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/**
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* Determines if the user can post a comment
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*
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* @param bool $value
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*/
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public function set_post_permission($value) {
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$this->postcap = (bool)$value;
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}
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/**
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* check posting comments permission
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* It will check based on user roles and ask modules
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* If you need to check permission by modules, a
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* function named $pluginname_check_comment_post must be implemented
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*/
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private function check_permissions() {
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$this->postcap = has_capability('moodle/comment:post', $this->context);
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$this->viewcap = has_capability('moodle/comment:view', $this->context);
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if (!empty($this->plugintype)) {
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$permissions = plugin_callback($this->plugintype, $this->pluginname, 'comment', 'permissions', array($this->comment_param), array('post'=>false, 'view'=>false));
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$this->postcap = $this->postcap && $permissions['post'];
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$this->viewcap = $this->viewcap && $permissions['view'];
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}
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}
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/**
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* Gets a link for this page that will work with JS disabled.
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*
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* @global moodle_page $PAGE
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* @param moodle_page $page
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* @return moodle_url
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*/
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public function get_nojslink(moodle_page $page = null) {
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if ($page === null) {
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global $PAGE;
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$page = $PAGE;
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}
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$link = new moodle_url($page->url, array(
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'nonjscomment' => true,
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'comment_itemid' => $this->itemid,
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'comment_context' => $this->context->id,
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'comment_component' => $this->get_component(),
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'comment_area' => $this->commentarea,
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));
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$link->remove_params(array('comment_page'));
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return $link;
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}
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/**
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* Sets the value of the notoggle option.
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*
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* If set to true then the user will not be able to expand and collase
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* the comment section.
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*
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* @param bool $newvalue
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*/
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public function set_notoggle($newvalue = true) {
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$this->notoggle = (bool)$newvalue;
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}
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/**
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* Sets the value of the autostart option.
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*
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* If set to true then the comments will be loaded during page load.
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* Normally this happens only once the user expands the comment section.
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*
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* @param bool $newvalue
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*/
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public function set_autostart($newvalue = true) {
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$this->autostart = (bool)$newvalue;
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}
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/**
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* Sets the displaycancel option
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*
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* If set to true then a cancel button will be shown when using the form
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* to post comments.
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*
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* @param bool $newvalue
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*/
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public function set_displaycancel($newvalue = true) {
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$this->displaycancel = (bool)$newvalue;
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}
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/**
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* Sets the displaytotalcount option
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*
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* If set to true then the total number of comments will be displayed
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* when printing comments.
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*
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* @param bool $newvalue
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*/
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public function set_displaytotalcount($newvalue = true) {
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$this->displaytotalcount = (bool)$newvalue;
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}
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/**
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* Initialises the JavaScript that enchances the comment API.
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*
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* @param moodle_page $page The moodle page object that the JavaScript should be
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* initialised for.
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*/
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public function initialise_javascript(moodle_page $page) {
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$options = new stdClass;
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$options->client_id = $this->cid;
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$options->commentarea = $this->commentarea;
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$options->itemid = $this->itemid;
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$options->page = 0;
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$options->courseid = $this->courseid;
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$options->contextid = $this->contextid;
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$options->component = $this->component;
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$options->notoggle = $this->notoggle;
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$options->autostart = $this->autostart;
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$page->requires->js_init_call('M.core_comment.init', array($options), true);
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return true;
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}
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/**
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* Prepare comment code in html
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* @param boolean $return
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* @return string|void
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*/
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public function output($return = true) {
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global $PAGE, $OUTPUT;
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static $template_printed;
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$this->initialise_javascript($PAGE);
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if (!empty(self::$nonjs)) {
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// return non js comments interface
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return $this->print_comments(self::$comment_page, $return, true);
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}
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$html = '';
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// print html template
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// Javascript will use the template to render new comments
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if (empty($template_printed) && $this->can_view()) {
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$html .= html_writer::tag('div', $this->template, array('style' => 'display:none', 'id' => 'cmt-tmpl'));
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$template_printed = true;
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}
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if ($this->can_view()) {
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// print commenting icon and tooltip
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$html .= html_writer::start_tag('div', array('class' => 'mdl-left'));
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$html .= html_writer::link($this->get_nojslink($PAGE), get_string('showcommentsnonjs'), array('class' => 'showcommentsnonjs'));
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if (!$this->notoggle) {
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// If toggling is enabled (notoggle=false) then print the controls to toggle
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// comments open and closed
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$countstring = '';
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if ($this->displaytotalcount) {
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$countstring = '('.$this->count().')';
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}
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$collapsedimage= 't/collapsed';
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if (right_to_left()) {
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$collapsedimage= 't/collapsed_rtl';
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} else {
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$collapsedimage= 't/collapsed';
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}
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$html .= html_writer::start_tag('a', array(
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'class' => 'comment-link',
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'id' => 'comment-link-'.$this->cid,
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'href' => '#',
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'role' => 'button',
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'aria-expanded' => 'false')
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);
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$html .= $OUTPUT->pix_icon($collapsedimage, $this->linktext);
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$html .= html_writer::tag('span', $this->linktext.' '.$countstring, array('id' => 'comment-link-text-'.$this->cid));
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$html .= html_writer::end_tag('a');
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}
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$html .= html_writer::start_tag('div', array('id' => 'comment-ctrl-'.$this->cid, 'class' => 'comment-ctrl'));
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if ($this->autostart) {
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// If autostart has been enabled print the comments list immediatly
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$html .= html_writer::start_tag('ul', array('id' => 'comment-list-'.$this->cid, 'class' => 'comment-list comments-loaded'));
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$html .= html_writer::tag('li', '', array('class' => 'first'));
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$html .= $this->print_comments(0, true, false);
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$html .= html_writer::end_tag('ul'); // .comment-list
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$html .= $this->get_pagination(0);
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} else {
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$html .= html_writer::start_tag('ul', array('id' => 'comment-list-'.$this->cid, 'class' => 'comment-list'));
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$html .= html_writer::tag('li', '', array('class' => 'first'));
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$html .= html_writer::end_tag('ul'); // .comment-list
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$html .= html_writer::tag('div', '', array('id' => 'comment-pagination-'.$this->cid, 'class' => 'comment-pagination'));
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}
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if ($this->can_post()) {
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// print posting textarea
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$textareaattrs = array(
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'name' => 'content',
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'rows' => 2,
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'id' => 'dlg-content-'.$this->cid,
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'aria-label' => get_string('addcomment')
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);
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if (!$this->fullwidth) {
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$textareaattrs['cols'] = '20';
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} else {
|
|
$textareaattrs['class'] = 'fullwidth';
|
|
}
|
|
|
|
$html .= html_writer::start_tag('div', array('class' => 'comment-area'));
|
|
$html .= html_writer::start_tag('div', array('class' => 'db'));
|
|
$html .= html_writer::tag('textarea', '', $textareaattrs);
|
|
$html .= html_writer::end_tag('div'); // .db
|
|
|
|
$html .= html_writer::start_tag('div', array('class' => 'fd', 'id' => 'comment-action-'.$this->cid));
|
|
$html .= html_writer::link('#', get_string('savecomment'), array('id' => 'comment-action-post-'.$this->cid));
|
|
|
|
if ($this->displaycancel) {
|
|
$html .= html_writer::tag('span', ' | ');
|
|
$html .= html_writer::link('#', get_string('cancel'), array('id' => 'comment-action-cancel-'.$this->cid));
|
|
}
|
|
|
|
$html .= html_writer::end_tag('div'); // .fd
|
|
$html .= html_writer::end_tag('div'); // .comment-area
|
|
$html .= html_writer::tag('div', '', array('class' => 'clearer'));
|
|
}
|
|
|
|
$html .= html_writer::end_tag('div'); // .comment-ctrl
|
|
$html .= html_writer::end_tag('div'); // .mdl-left
|
|
} else {
|
|
$html = '';
|
|
}
|
|
|
|
if ($return) {
|
|
return $html;
|
|
} else {
|
|
echo $html;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Return matched comments
|
|
*
|
|
* @param int $page
|
|
* @return array
|
|
*/
|
|
public function get_comments($page = '') {
|
|
global $DB, $CFG, $USER, $OUTPUT;
|
|
if (!$this->can_view()) {
|
|
return false;
|
|
}
|
|
if (!is_numeric($page)) {
|
|
$page = 0;
|
|
}
|
|
$params = array();
|
|
$perpage = (!empty($CFG->commentsperpage))?$CFG->commentsperpage:15;
|
|
$start = $page * $perpage;
|
|
$ufields = user_picture::fields('u');
|
|
|
|
list($componentwhere, $component) = $this->get_component_select_sql('c');
|
|
if ($component) {
|
|
$params['component'] = $component;
|
|
}
|
|
|
|
$sql = "SELECT $ufields, c.id AS cid, c.content AS ccontent, c.format AS cformat, c.timecreated AS ctimecreated
|
|
FROM {comments} c
|
|
JOIN {user} u ON u.id = c.userid
|
|
WHERE c.contextid = :contextid AND
|
|
c.commentarea = :commentarea AND
|
|
c.itemid = :itemid AND
|
|
$componentwhere
|
|
ORDER BY c.timecreated DESC";
|
|
$params['contextid'] = $this->contextid;
|
|
$params['commentarea'] = $this->commentarea;
|
|
$params['itemid'] = $this->itemid;
|
|
|
|
$comments = array();
|
|
$formatoptions = array('overflowdiv' => true, 'blanktarget' => true);
|
|
$rs = $DB->get_recordset_sql($sql, $params, $start, $perpage);
|
|
foreach ($rs as $u) {
|
|
$c = new stdClass();
|
|
$c->id = $u->cid;
|
|
$c->content = $u->ccontent;
|
|
$c->format = $u->cformat;
|
|
$c->timecreated = $u->ctimecreated;
|
|
$c->strftimeformat = get_string('strftimerecentfull', 'langconfig');
|
|
$url = new moodle_url('/user/view.php', array('id'=>$u->id, 'course'=>$this->courseid));
|
|
$c->profileurl = $url->out(false); // URL should not be escaped just yet.
|
|
$c->fullname = fullname($u);
|
|
$c->time = userdate($c->timecreated, $c->strftimeformat);
|
|
$c->content = format_text($c->content, $c->format, $formatoptions);
|
|
$c->avatar = $OUTPUT->user_picture($u, array('size'=>18));
|
|
$c->userid = $u->id;
|
|
|
|
$candelete = $this->can_delete($c->id);
|
|
if (($USER->id == $u->id) || !empty($candelete)) {
|
|
$c->delete = true;
|
|
}
|
|
$comments[] = $c;
|
|
}
|
|
$rs->close();
|
|
|
|
if (!empty($this->plugintype)) {
|
|
// moodle module will filter comments
|
|
$comments = plugin_callback($this->plugintype, $this->pluginname, 'comment', 'display', array($comments, $this->comment_param), $comments);
|
|
}
|
|
|
|
return $comments;
|
|
}
|
|
|
|
/**
|
|
* Returns an SQL fragment and param for selecting on component.
|
|
* @param string $alias
|
|
* @return array
|
|
*/
|
|
protected function get_component_select_sql($alias = '') {
|
|
$component = $this->get_component();
|
|
if ($alias) {
|
|
$alias = $alias.'.';
|
|
}
|
|
if (empty($component)) {
|
|
$componentwhere = "{$alias}component IS NULL";
|
|
$component = null;
|
|
} else {
|
|
$componentwhere = "({$alias}component IS NULL OR {$alias}component = :component)";
|
|
}
|
|
return array($componentwhere, $component);
|
|
}
|
|
|
|
/**
|
|
* Returns the number of comments associated with the details of this object
|
|
*
|
|
* @global moodle_database $DB
|
|
* @return int
|
|
*/
|
|
public function count() {
|
|
global $DB;
|
|
if ($this->totalcommentcount === null) {
|
|
list($where, $component) = $this->get_component_select_sql();
|
|
$where .= ' AND itemid = :itemid AND commentarea = :commentarea AND contextid = :contextid';
|
|
$params = array(
|
|
'itemid' => $this->itemid,
|
|
'commentarea' => $this->commentarea,
|
|
'contextid' => $this->context->id,
|
|
);
|
|
if ($component) {
|
|
$params['component'] = $component;
|
|
}
|
|
|
|
$this->totalcommentcount = $DB->count_records_select('comments', $where, $params);
|
|
}
|
|
return $this->totalcommentcount;
|
|
}
|
|
|
|
/**
|
|
* Returns HTML to display a pagination bar
|
|
*
|
|
* @global stdClass $CFG
|
|
* @global core_renderer $OUTPUT
|
|
* @param int $page
|
|
* @return string
|
|
*/
|
|
public function get_pagination($page = 0) {
|
|
global $CFG, $OUTPUT;
|
|
$count = $this->count();
|
|
$perpage = (!empty($CFG->commentsperpage))?$CFG->commentsperpage:15;
|
|
$pages = (int)ceil($count/$perpage);
|
|
if ($pages == 1 || $pages == 0) {
|
|
return html_writer::tag('div', '', array('id' => 'comment-pagination-'.$this->cid, 'class' => 'comment-pagination'));
|
|
}
|
|
if (!empty(self::$nonjs)) {
|
|
// used in non-js interface
|
|
return $OUTPUT->paging_bar($count, $page, $perpage, $this->get_nojslink(), 'comment_page');
|
|
} else {
|
|
// return ajax paging bar
|
|
$str = '';
|
|
$str .= '<div class="comment-paging" id="comment-pagination-'.$this->cid.'">';
|
|
for ($p=0; $p<$pages; $p++) {
|
|
if ($p == $page) {
|
|
$class = 'curpage';
|
|
} else {
|
|
$class = 'pageno';
|
|
}
|
|
$str .= '<a href="#" class="'.$class.'" id="comment-page-'.$this->cid.'-'.$p.'">'.($p+1).'</a> ';
|
|
}
|
|
$str .= '</div>';
|
|
}
|
|
return $str;
|
|
}
|
|
|
|
/**
|
|
* Add a new comment
|
|
*
|
|
* @global moodle_database $DB
|
|
* @param string $content
|
|
* @param int $format
|
|
* @return stdClass
|
|
*/
|
|
public function add($content, $format = FORMAT_MOODLE) {
|
|
global $CFG, $DB, $USER, $OUTPUT;
|
|
if (!$this->can_post()) {
|
|
throw new comment_exception('nopermissiontocomment');
|
|
}
|
|
$now = time();
|
|
$newcmt = new stdClass;
|
|
$newcmt->contextid = $this->contextid;
|
|
$newcmt->commentarea = $this->commentarea;
|
|
$newcmt->itemid = $this->itemid;
|
|
$newcmt->component = !empty($this->component) ? $this->component : null;
|
|
$newcmt->content = $content;
|
|
$newcmt->format = $format;
|
|
$newcmt->userid = $USER->id;
|
|
$newcmt->timecreated = $now;
|
|
|
|
// This callback allow module to modify the content of comment, such as filter or replacement
|
|
plugin_callback($this->plugintype, $this->pluginname, 'comment', 'add', array(&$newcmt, $this->comment_param));
|
|
|
|
$cmt_id = $DB->insert_record('comments', $newcmt);
|
|
if (!empty($cmt_id)) {
|
|
$newcmt->id = $cmt_id;
|
|
$newcmt->strftimeformat = get_string('strftimerecentfull', 'langconfig');
|
|
$newcmt->fullname = fullname($USER);
|
|
$url = new moodle_url('/user/view.php', array('id' => $USER->id, 'course' => $this->courseid));
|
|
$newcmt->profileurl = $url->out();
|
|
$formatoptions = array('overflowdiv' => true, 'blanktarget' => true);
|
|
$newcmt->content = format_text($newcmt->content, $newcmt->format, $formatoptions);
|
|
$newcmt->avatar = $OUTPUT->user_picture($USER, array('size'=>16));
|
|
|
|
$commentlist = array($newcmt);
|
|
|
|
if (!empty($this->plugintype)) {
|
|
// Call the display callback to allow the plugin to format the newly added comment.
|
|
$commentlist = plugin_callback($this->plugintype,
|
|
$this->pluginname,
|
|
'comment',
|
|
'display',
|
|
array($commentlist, $this->comment_param),
|
|
$commentlist);
|
|
$newcmt = $commentlist[0];
|
|
}
|
|
$newcmt->time = userdate($newcmt->timecreated, $newcmt->strftimeformat);
|
|
|
|
// Trigger comment created event.
|
|
if (core_component::is_core_subsystem($this->component)) {
|
|
$eventclassname = '\\core\\event\\' . $this->component . '_comment_created';
|
|
} else {
|
|
$eventclassname = '\\' . $this->component . '\\event\comment_created';
|
|
}
|
|
if (class_exists($eventclassname)) {
|
|
$event = $eventclassname::create(
|
|
array(
|
|
'context' => $this->context,
|
|
'objectid' => $newcmt->id,
|
|
'other' => array(
|
|
'itemid' => $this->itemid
|
|
)
|
|
));
|
|
$event->trigger();
|
|
}
|
|
|
|
return $newcmt;
|
|
} else {
|
|
throw new comment_exception('dbupdatefailed');
|
|
}
|
|
}
|
|
|
|
/**
|
|
* delete by context, commentarea and itemid
|
|
* @param stdClass|array $param {
|
|
* contextid => int the context in which the comments exist [required]
|
|
* commentarea => string the comment area [optional]
|
|
* itemid => int comment itemid [optional]
|
|
* }
|
|
* @return boolean
|
|
*/
|
|
public static function delete_comments($param) {
|
|
global $DB;
|
|
$param = (array)$param;
|
|
if (empty($param['contextid'])) {
|
|
return false;
|
|
}
|
|
$DB->delete_records('comments', $param);
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* Delete page_comments in whole course, used by course reset
|
|
*
|
|
* @param stdClass $context course context
|
|
*/
|
|
public static function reset_course_page_comments($context) {
|
|
global $DB;
|
|
$contexts = array();
|
|
$contexts[] = $context->id;
|
|
$children = $context->get_child_contexts();
|
|
foreach ($children as $c) {
|
|
$contexts[] = $c->id;
|
|
}
|
|
list($ids, $params) = $DB->get_in_or_equal($contexts);
|
|
$DB->delete_records_select('comments', "commentarea='page_comments' AND contextid $ids", $params);
|
|
}
|
|
|
|
/**
|
|
* Delete a comment
|
|
*
|
|
* @param int $commentid
|
|
* @return bool
|
|
*/
|
|
public function delete($commentid) {
|
|
global $DB, $USER;
|
|
$candelete = has_capability('moodle/comment:delete', $this->context);
|
|
if (!$comment = $DB->get_record('comments', array('id'=>$commentid))) {
|
|
throw new comment_exception('dbupdatefailed');
|
|
}
|
|
if (!($USER->id == $comment->userid || !empty($candelete))) {
|
|
throw new comment_exception('nopermissiontocomment');
|
|
}
|
|
$DB->delete_records('comments', array('id'=>$commentid));
|
|
// Trigger comment delete event.
|
|
if (core_component::is_core_subsystem($this->component)) {
|
|
$eventclassname = '\\core\\event\\' . $this->component . '_comment_deleted';
|
|
} else {
|
|
$eventclassname = '\\' . $this->component . '\\event\comment_deleted';
|
|
}
|
|
if (class_exists($eventclassname)) {
|
|
$event = $eventclassname::create(
|
|
array(
|
|
'context' => $this->context,
|
|
'objectid' => $commentid,
|
|
'other' => array(
|
|
'itemid' => $this->itemid
|
|
)
|
|
));
|
|
$event->add_record_snapshot('comments', $comment);
|
|
$event->trigger();
|
|
}
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* Print comments
|
|
*
|
|
* @param int $page
|
|
* @param bool $return return comments list string or print it out
|
|
* @param bool $nonjs print nonjs comments list or not?
|
|
* @return string|void
|
|
*/
|
|
public function print_comments($page = 0, $return = true, $nonjs = true) {
|
|
global $DB, $CFG, $PAGE;
|
|
|
|
if (!$this->can_view()) {
|
|
return '';
|
|
}
|
|
|
|
if (!(self::$comment_itemid == $this->itemid &&
|
|
self::$comment_context == $this->context->id &&
|
|
self::$comment_area == $this->commentarea &&
|
|
self::$comment_component == $this->component
|
|
)) {
|
|
$page = 0;
|
|
}
|
|
$comments = $this->get_comments($page);
|
|
|
|
$html = '';
|
|
if ($nonjs) {
|
|
$html .= html_writer::tag('h3', get_string('comments'));
|
|
$html .= html_writer::start_tag('ul', array('id' => 'comment-list-'.$this->cid, 'class' => 'comment-list'));
|
|
}
|
|
// Reverse the comments array to display them in the correct direction
|
|
foreach (array_reverse($comments) as $cmt) {
|
|
$html .= html_writer::tag('li', $this->print_comment($cmt, $nonjs), array('id' => 'comment-'.$cmt->id.'-'.$this->cid));
|
|
}
|
|
if ($nonjs) {
|
|
$html .= html_writer::end_tag('ul');
|
|
$html .= $this->get_pagination($page);
|
|
}
|
|
if ($nonjs && $this->can_post()) {
|
|
// Form to add comments
|
|
$html .= html_writer::start_tag('form', array('method' => 'post', 'action' => new moodle_url('/comment/comment_post.php')));
|
|
// Comment parameters
|
|
$html .= html_writer::empty_tag('input', array('type' => 'hidden', 'name' => 'contextid', 'value' => $this->contextid));
|
|
$html .= html_writer::empty_tag('input', array('type' => 'hidden', 'name' => 'action', 'value' => 'add'));
|
|
$html .= html_writer::empty_tag('input', array('type' => 'hidden', 'name' => 'area', 'value' => $this->commentarea));
|
|
$html .= html_writer::empty_tag('input', array('type' => 'hidden', 'name' => 'component', 'value' => $this->component));
|
|
$html .= html_writer::empty_tag('input', array('type' => 'hidden', 'name' => 'itemid', 'value' => $this->itemid));
|
|
$html .= html_writer::empty_tag('input', array('type' => 'hidden', 'name' => 'courseid', 'value' => $this->courseid));
|
|
$html .= html_writer::empty_tag('input', array('type' => 'hidden', 'name' => 'sesskey', 'value' => sesskey()));
|
|
$html .= html_writer::empty_tag('input', array('type' => 'hidden', 'name' => 'returnurl', 'value' => $PAGE->url));
|
|
// Textarea for the actual comment
|
|
$html .= html_writer::tag('textarea', '', array('name' => 'content', 'rows' => 2));
|
|
// Submit button to add the comment
|
|
$html .= html_writer::empty_tag('input', array('type' => 'submit', 'value' => get_string('submit')));
|
|
$html .= html_writer::end_tag('form');
|
|
}
|
|
if ($return) {
|
|
return $html;
|
|
} else {
|
|
echo $html;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Returns an array containing comments in HTML format.
|
|
*
|
|
* @global core_renderer $OUTPUT
|
|
* @param stdClass $cmt {
|
|
* id => int comment id
|
|
* content => string comment content
|
|
* format => int comment text format
|
|
* timecreated => int comment's timecreated
|
|
* profileurl => string link to user profile
|
|
* fullname => comment author's full name
|
|
* avatar => string user's avatar
|
|
* delete => boolean does user have permission to delete comment?
|
|
* }
|
|
* @param bool $nonjs
|
|
* @return array
|
|
*/
|
|
public function print_comment($cmt, $nonjs = true) {
|
|
global $OUTPUT;
|
|
$patterns = array();
|
|
$replacements = array();
|
|
|
|
if (!empty($cmt->delete) && empty($nonjs)) {
|
|
$strdelete = get_string('deletecommentbyon', 'moodle', (object)['user' => $cmt->fullname, 'time' => $cmt->time]);
|
|
$deletelink = html_writer::start_tag('div', array('class'=>'comment-delete'));
|
|
$deletelink .= html_writer::start_tag('a', array('href' => '#', 'id' => 'comment-delete-'.$this->cid.'-'.$cmt->id,
|
|
'title' => $strdelete));
|
|
|
|
$deletelink .= $OUTPUT->pix_icon('t/delete', get_string('delete'));
|
|
$deletelink .= html_writer::end_tag('a');
|
|
$deletelink .= html_writer::end_tag('div');
|
|
$cmt->content = $deletelink . $cmt->content;
|
|
}
|
|
$patterns[] = '___picture___';
|
|
$patterns[] = '___name___';
|
|
$patterns[] = '___content___';
|
|
$patterns[] = '___time___';
|
|
$replacements[] = $cmt->avatar;
|
|
$replacements[] = html_writer::link($cmt->profileurl, $cmt->fullname);
|
|
$replacements[] = $cmt->content;
|
|
$replacements[] = $cmt->time;
|
|
|
|
// use html template to format a single comment.
|
|
return str_replace($patterns, $replacements, $this->template);
|
|
}
|
|
|
|
/**
|
|
* Revoke validate callbacks
|
|
*
|
|
* @param stdClass $params addtionall parameters need to add to callbacks
|
|
*/
|
|
protected function validate($params=array()) {
|
|
foreach ($params as $key=>$value) {
|
|
$this->comment_param->$key = $value;
|
|
}
|
|
$validation = plugin_callback($this->plugintype, $this->pluginname, 'comment', 'validate', array($this->comment_param), false);
|
|
if (!$validation) {
|
|
throw new comment_exception('invalidcommentparam');
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Returns true if the user is able to view comments
|
|
* @return bool
|
|
*/
|
|
public function can_view() {
|
|
$this->validate();
|
|
return !empty($this->viewcap);
|
|
}
|
|
|
|
/**
|
|
* Returns true if the user can add comments against this comment description
|
|
* @return bool
|
|
*/
|
|
public function can_post() {
|
|
$this->validate();
|
|
return isloggedin() && !empty($this->postcap);
|
|
}
|
|
|
|
/**
|
|
* Returns true if the user can delete this comment
|
|
* @param int $commentid
|
|
* @return bool
|
|
*/
|
|
public function can_delete($commentid) {
|
|
$this->validate(array('commentid'=>$commentid));
|
|
return has_capability('moodle/comment:delete', $this->context);
|
|
}
|
|
|
|
/**
|
|
* Returns the component associated with the comment.
|
|
*
|
|
* @return string
|
|
*/
|
|
public function get_component() {
|
|
return $this->component;
|
|
}
|
|
|
|
/**
|
|
* Do not call! I am a deprecated method because of the typo in my name.
|
|
* @deprecated since 2.9
|
|
* @see comment::get_component()
|
|
* @return string
|
|
*/
|
|
public function get_compontent() {
|
|
return $this->get_component();
|
|
}
|
|
|
|
/**
|
|
* Returns the context associated with the comment
|
|
* @return stdClass
|
|
*/
|
|
public function get_context() {
|
|
return $this->context;
|
|
}
|
|
|
|
/**
|
|
* Returns the course id associated with the comment
|
|
* @return int
|
|
*/
|
|
public function get_courseid() {
|
|
return $this->courseid;
|
|
}
|
|
|
|
/**
|
|
* Returns the course module associated with the comment
|
|
*
|
|
* @return stdClass
|
|
*/
|
|
public function get_cm() {
|
|
return $this->cm;
|
|
}
|
|
|
|
/**
|
|
* Returns the item id associated with the comment
|
|
*
|
|
* @return int
|
|
*/
|
|
public function get_itemid() {
|
|
return $this->itemid;
|
|
}
|
|
|
|
/**
|
|
* Returns the comment area associated with the commentarea
|
|
*
|
|
* @return stdClass
|
|
*/
|
|
public function get_commentarea() {
|
|
return $this->commentarea;
|
|
}
|
|
|
|
/**
|
|
* Make the comments textarea fullwidth.
|
|
*
|
|
* @since 2.8.1 + 2.7.4
|
|
* @param bool $fullwidth
|
|
*/
|
|
public function set_fullwidth($fullwidth = true) {
|
|
$this->fullwidth = (bool)$fullwidth;
|
|
}
|
|
|
|
/**
|
|
* Return the template.
|
|
*
|
|
* @since 3.1
|
|
* @return string
|
|
*/
|
|
public function get_template() {
|
|
return $this->template;
|
|
}
|
|
|
|
/**
|
|
* Return the cid.
|
|
*
|
|
* @since 3.1
|
|
* @return string
|
|
*/
|
|
public function get_cid() {
|
|
return $this->cid;
|
|
}
|
|
|
|
/**
|
|
* Return the link text.
|
|
*
|
|
* @since 3.1
|
|
* @return string
|
|
*/
|
|
public function get_linktext() {
|
|
return $this->linktext;
|
|
}
|
|
|
|
/**
|
|
* Return no toggle.
|
|
*
|
|
* @since 3.1
|
|
* @return bool
|
|
*/
|
|
public function get_notoggle() {
|
|
return $this->notoggle;
|
|
}
|
|
|
|
/**
|
|
* Return display total count.
|
|
*
|
|
* @since 3.1
|
|
* @return bool
|
|
*/
|
|
public function get_displaytotalcount() {
|
|
return $this->displaytotalcount;
|
|
}
|
|
|
|
/**
|
|
* Return display cancel.
|
|
*
|
|
* @since 3.1
|
|
* @return bool
|
|
*/
|
|
public function get_displaycancel() {
|
|
return $this->displaycancel;
|
|
}
|
|
|
|
/**
|
|
* Return fullwidth.
|
|
*
|
|
* @since 3.1
|
|
* @return bool
|
|
*/
|
|
public function get_fullwidth() {
|
|
return $this->fullwidth;
|
|
}
|
|
|
|
/**
|
|
* Return autostart.
|
|
*
|
|
* @since 3.1
|
|
* @return bool
|
|
*/
|
|
public function get_autostart() {
|
|
return $this->autostart;
|
|
}
|
|
|
|
}
|
|
|
|
/**
|
|
* Comment exception class
|
|
*
|
|
* @package core
|
|
* @copyright 2010 Dongsheng Cai {@link http://dongsheng.org}
|
|
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
|
|
*/
|
|
class comment_exception extends moodle_exception {
|
|
}
|
|
|