/**
* Displays the random-image widget.
*
* @uses ClassBlogs_Plugins_RandomImage to get a random image to display
*/
public function widget($args, $instance)
{
$instance = $this->maybe_apply_instance_defaults($instance);
$plugin = ClassBlogs::get_plugin('random_image');
$image = $plugin->get_random_image();
if ($image) {
$this->start_widget($args, $instance);
ClassBlogs_NXTClass::switch_to_blog($image->blog_id);
// If the image is associated with a specific post, provide a link
// to the post. If it has no post linkages, show a link to the blog.
if ($image->post_id) {
$post_link = sprintf('<a href="%s">%s</a>', esc_url(get_permalink($image->post_id)), esc_html(get_post($image->post_id)->post_title));
// Show a link to a post on a blog when running in multisite
// mode, or a link to the post by a particular user when not
if (ClassBlogs_Utils::is_multisite()) {
$caption = sprintf(__('From the post %1$s on %2$s', 'classblogs'), $post_link, sprintf('<a href="%s">%s</a>', esc_url(ClassBlogs_NXTClass::get_blogaddress_by_id($image->blog_id)), esc_html(ClassBlogs_NXTClass::get_blog_option($image->blog_id, 'blogname'))));
} else {
$user = get_userdata($image->user_id);
$caption = sprintf(__('From the post %1$s by %2$s', 'classblogs'), $post_link, sprintf('<a href="%s">%s</a>', esc_url(get_author_posts_url($image->user_id)), esc_html($user->display_name)));
}
} else {
// Show a link to the source blog when running in multisite mode,
// or show the image's title when not
if (ClassBlogs_Utils::is_multisite()) {
$caption = sprintf(__('From the blog %s', 'classblogs'), sprintf('<a href="%s">%s</a>', esc_url(ClassBlogs_NXTClass::get_blogaddress_by_id($image->blog_id)), esc_html(ClassBlogs_NXTClass::get_blog_option($image->blog_id, 'blogname'))));
} else {
$caption = sprintf('<a href="%s">%s</a>', esc_url($image->url), esc_attr($image->title));
}
}
// Display the link to the image with an appropriate caption
printf('<ul>
<li>
<a href="%1$s"><img src="%1$s" alt="%2$s" title="%2$s" width="80%%" /></a>
<br />
%3$s
</li>
</ul>', esc_url($image->url), esc_attr($image->title), $caption);
ClassBlogs_NXTClass::restore_current_blog();
$this->end_widget($args);
}
}
/**
* Updates the student-blogs widget.
*
* @uses ClassBlogs_Plugins_StudentBlogList to clear the blog cache
*/
public function update($new, $old)
{
// Update the widget options
$instance = $old;
$instance['display'] = ClassBlogs_Utils::sanitize_user_input($new['display']);
$instance['title'] = ClassBlogs_Utils::sanitize_user_input($new['title']);
// Clear the cached blog list and return the new instance
$plugin = ClassBlogs::get_plugin('student_blogs');
$plugin->clear_blog_cache();
return $instance;
}
/**
* Displays the sitewide tag cloud widget.
*
* @uses ClassBlogs_Plugins_Aggregation_SitewideTags to get all sitewide tags
*/
public function widget($args, $instance)
{
$instance = $this->maybe_apply_instance_defaults($instance);
$plugin = ClassBlogs::get_plugin('sitewide_tags');
$most_usage = $plugin->get_max_usage_count();
$least_usage = $plugin->get_min_usage_count();
if (!$most_usage && !$least_usage) {
return;
}
$this->start_widget($args, $instance);
$most_usage = max($most_usage, $instance['min_usage']);
$least_usage = max($least_usage, $instance['min_usage']);
$max_font = $instance['max_font_size'];
$min_font = $instance['min_font_size'];
// Display each tag as a weighted link a list
echo "<div class='tagcloud'>";
foreach ($plugin->get_tags_for_tag_cloud($instance['min_usage']) as $tag) {
printf('<a class="tag-link" href="%s" rel="tag" title="%s" style="font-size: %dpt;">%s</a> ', esc_url($tag->url), esc_attr(sprintf(_n('%d topic', '%d topics', $tag->count), $tag->count)), $min_font + floor(($tag->count - $least_usage) / max($most_usage - $least_usage, 1) * ($max_font - $min_font)), esc_html($tag->name));
}
echo "</div>";
$this->end_widget($args);
}
/**
* Updates the sitewide comments widget.
*
* @uses ClassBlogs_Plugins_Aggregation_SitewideComments to clear the cached widget
*/
public function update($new, $old)
{
// Update the widget options
$instance = $old;
$instance['max_comments'] = absint(ClassBlogs_Utils::sanitize_user_input($new['max_comments']));
$instance['max_comments_per_blog'] = absint(ClassBlogs_Utils::sanitize_user_input($new['max_comments_per_blog']));
$instance['meta_format'] = ClassBlogs_Utils::sanitize_user_input($new['meta_format']);
$instance['show_excerpt'] = ClassBlogs_Utils::checkbox_as_bool($new, 'show_excerpt');
$instance['title'] = ClassBlogs_Utils::sanitize_user_input($new['title']);
// Clear the cached sidebar widget
$plugin = ClassBlogs::get_plugin('sitewide_comments');
$plugin->clear_cached_widget();
return $instance;
}
/**
* Calculates the number of words produced by a student in the given date window.
*
* @param int $user_id the ID of the user
* @param object $start_dt a DateTime of the start date
* @param object $end_dt a DateTime of the end date
* @return int the number of words produced by the student
*
* @uses ClassBlogs_Plugins_Aggregation_SitewidePosts to get all sitewide posts
* @uses ClassBlogs_Plugins_Aggregation_SitewideComments to get all sitewide comments
*
* @access private
* @since 0.1
*/
private function _get_word_count_for_student($user_id, $start_dt, $end_dt)
{
$words = 0;
// Be explicit about the times of the given dates, making the start date
// begin at midnight an the end date end at one second before midnight
$start_dt->setTime(0, 0, 0);
$end_dt->setTime(23, 59, 59);
// Start with the word counts from the posts
$sitewide_posts = ClassBlogs::get_plugin('sitewide_posts');
$posts = $sitewide_posts->filter_posts($user_id, $start_dt, $end_dt);
foreach ($posts as $post) {
$words += $this->_get_word_count_for_text($post->post_content);
}
// Add the word count from all comments
$sitewide_comments = ClassBlogs::get_plugin('sitewide_comments');
$comments = $sitewide_comments->filter_comments($user_id, $start_dt, $end_dt);
foreach ($comments as $comment) {
$words += $this->_get_word_count_for_text($comment->comment_content);
}
return $words;
}
/**
* Populates the YouTube playlist from the videos in all posts on the site.
*
* @access private
* @since 0.4
*/
private function _sync_playlist()
{
$plugin = ClassBlogs::get_plugin('sitewide_posts');
if (!empty($plugin)) {
// Create records of all videos used
foreach ($plugin->get_sitewide_posts() as $post) {
ClassBlogs_NXTClass::switch_to_blog($post->cb_sw_blog_id);
$this->_update_videos_on_post_save($post->ID);
ClassBlogs_NXTClass::restore_current_blog();
}
// Request information on all added videos from YouTube
$this->_retrieve_queued_video_info();
}
}
/**
* Returns the number of comments that a student has left
*
* @param int $user_id the user ID of a student
* @return string the number of comments left by the student
*/
function classblogging_get_total_comments_for_student($user_id)
{
$sitewide_comments = ClassBlogs::get_plugin('sitewide_comments');
return $sitewide_comments->get_total_comments_for_student($user_id);
}
