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<?php
/**
* Module Name: Gravatar Hovercards
* Module Description: Enable pop-up business cards over commenters’ Gravatars.
* Sort Order: 11
* Recommendation Order: 13
* First Introduced: 1.1
* Requires Connection: No
* Auto Activate: No
* Module Tags: Social, Appearance
* Feature: Appearance
* Additional Search Queries: gravatar, hovercards
*/
define( 'GROFILES__CACHE_BUSTER', gmdate( 'YM' ) . 'aa' ); // Break CDN cache, increment when gravatar.com/js/gprofiles.js changes
function grofiles_hovercards_init() {
add_filter( 'get_avatar', 'grofiles_get_avatar', 10, 2 );
add_action( 'wp_enqueue_scripts', 'grofiles_attach_cards' );
add_action( 'wp_footer', 'grofiles_extra_data' );
add_action( 'admin_init', 'grofiles_add_settings' );
add_action( 'load-index.php', 'grofiles_admin_cards' );
add_action( 'load-users.php', 'grofiles_admin_cards' );
add_action( 'load-edit-comments.php', 'grofiles_admin_cards' );
add_action( 'load-options-discussion.php', 'grofiles_admin_cards_forced' );
add_filter( 'jetpack_module_configuration_url_gravatar-hovercards', 'gravatar_hovercards_configuration_url' );
}
function gravatar_hovercards_configuration_url() {
return admin_url( 'options-discussion.php#show_avatars' );
}
add_action( 'jetpack_modules_loaded', 'grofiles_hovercards_init' );
/* Hovercard Settings */
/**
* Adds Gravatar Hovercard setting
*
* @todo - always print HTML, hide via CSS/JS if !show_avatars
*/
function grofiles_add_settings() {
if ( !get_option( 'show_avatars' ) )
return;
add_settings_field( 'gravatar_disable_hovercards', __( 'Gravatar Hovercards', 'jetpack' ), 'grofiles_setting_callback', 'discussion', 'avatars' );
register_setting( 'discussion', 'gravatar_disable_hovercards', 'grofiles_hovercard_option_sanitize' );
}
/**
* HTML for Gravatar Hovercard setting
*/
function grofiles_setting_callback() {
global $current_user;
$checked = 'disabled' == get_option( 'gravatar_disable_hovercards' ) ? '' : 'checked="checked" ';
echo "<label id='gravatar-hovercard-options'><input {$checked}name='gravatar_disable_hovercards' id='gravatar_disable_hovercards' type='checkbox' value='enabled' class='code' /> " . __( "View people's profiles when you mouse over their Gravatars", 'jetpack' ) . "</label>";
?>
<style type="text/css">
#grav-profile-example img {
float: left;
}
#grav-profile-example span {
padding: 0 1em;
}
</style>
<script type="text/javascript">
// <![CDATA[
jQuery( function($) {
var tr = $( '#gravatar_disable_hovercards' ).change( function() {
if ( $( this ).is( ':checked' ) ) {
$( '#grav-profile-example' ).slideDown( 'fast' );
} else {
$( '#grav-profile-example' ).slideUp( 'fast' );
}
} ).parents( 'tr' );
var ftr = tr.parents( 'table' ).find( 'tr:first' );
if ( ftr.length && !ftr.find( '#gravatar_disable_hovercards' ).length ) {
ftr.after( tr );
}
} );
// ]]>
</script>
<p id="grav-profile-example" class="hide-if-no-js"<?php if ( !$checked ) echo ' style="display:none"'; ?>><?php echo get_avatar( $current_user->ID, 64 ); ?> <span><?php _e( 'Put your mouse over your Gravatar to check out your profile.', 'jetpack' ); ?> <br class="clear" /></span></p>
<?php
}
/**
* Sanitation filter for Gravatar Hovercard setting
*/
function grofiles_hovercard_option_sanitize( $val ) {
if ( 'disabled' == $val ) {
return $val;
}
return $val ? 'enabled' : 'disabled';
}
/* Hovercard Display */
/**
* Stores the gravatars' users that need extra profile data attached.
*
* Getter/Setter
*
* @param int|string|null $author Setter: User ID or email address. Getter: null.
*
* @return mixed Setter: void. Getter: array of user IDs and email addresses.
*/
function grofiles_gravatars_to_append( $author = null ) {
static $authors = array();
// Get
if ( is_null( $author ) ) {
return array_keys( $authors );
}
// Set
if ( is_numeric( $author ) ) {
$author = (int) $author;
}
$authors[$author] = true;
}
/**
* Stores the user ID or email address for each gravatar generated.
*
* Attached to the 'get_avatar' filter.
*
* @param string $avatar The <img/> element of the avatar.
* @param mixed $author User ID, email address, user login, comment object, user object, post object
*
* @return The <img/> element of the avatar.
*/
function grofiles_get_avatar( $avatar, $author ) {
if ( is_numeric( $author ) ) {
grofiles_gravatars_to_append( $author );
} else if ( is_string( $author ) ) {
if ( false !== strpos( $author, '@' ) ) {
grofiles_gravatars_to_append( $author );
} else {
if ( $user = get_user_by( 'slug', $author ) )
grofiles_gravatars_to_append( $user->ID );
}
} else if ( isset( $author->comment_type ) ) {
if ( '' != $author->comment_type && 'comment' != $author->comment_type )
return $avatar;
if ( $author->user_id )
grofiles_gravatars_to_append( $author->user_id );
else
grofiles_gravatars_to_append( $author->comment_author_email );
} else if ( isset( $author->user_login ) ) {
grofiles_gravatars_to_append( $author->ID );
} else if ( isset( $author->post_author ) ) {
grofiles_gravatars_to_append( $author->post_author );
}
return $avatar;
}
/**
* Loads Gravatar Hovercard script.
*
* @todo is_singular() only?
*/
function grofiles_attach_cards() {
global $blog_id;
// Is the display of Avatars disabled?
if ( ! get_option( 'show_avatars' ) ) {
return;
}
// Is the display of Gravatar Hovercards disabled?
if ( 'disabled' == Jetpack_Options::get_option_and_ensure_autoload( 'gravatar_disable_hovercards', '0' ) ) {
return;
}
wp_enqueue_script( 'grofiles-cards', 'https://secure.gravatar.com/js/gprofiles.js', array( 'jquery' ), GROFILES__CACHE_BUSTER, true );
wp_enqueue_script( 'wpgroho', plugins_url( 'wpgroho.js', __FILE__ ), array( 'grofiles-cards' ), false, true );
if ( is_user_logged_in() ) {
$cu = wp_get_current_user();
$my_hash = md5( $cu->user_email );
} else if ( !empty( $_COOKIE['comment_author_email_' . COOKIEHASH] ) ) {
$my_hash = md5( $_COOKIE['comment_author_email_' . COOKIEHASH] );
} else {
$my_hash = '';
}
wp_localize_script( 'wpgroho', 'WPGroHo', compact( 'my_hash' ) );
}
function grofiles_attach_cards_forced() {
add_filter( 'pre_option_gravatar_disable_hovercards', 'grofiles_force_gravatar_enable_hovercards' );
grofiles_attach_cards();
}
function grofiles_force_gravatar_enable_hovercards() {
return 'enabled';
}
function grofiles_admin_cards_forced() {
add_action( 'admin_footer', 'grofiles_attach_cards_forced' );
}
function grofiles_admin_cards() {
add_action( 'admin_footer', 'grofiles_attach_cards' );
}
function grofiles_extra_data() {
?>
<div style="display:none">
<?php
foreach ( grofiles_gravatars_to_append() as $author )
grofiles_hovercards_data_html( $author );
?>
</div>
<?php
}
/**
* Echoes the data from grofiles_hovercards_data() as HTML elements.
*
* @since 5.5.0 Add support for a passed WP_User object
*
* @param int|string|WP_User $author User ID, email address, or a WP_User object
*/
function grofiles_hovercards_data_html( $author ) {
$data = grofiles_hovercards_data( $author );
$hash = '';
if ( is_numeric( $author ) ) {
$user = get_userdata( $author );
if ( $user ) {
$hash = md5( $user->user_email );
}
} elseif ( is_email( $author ) ) {
$hash = md5( $author );
} elseif ( is_a( $author, 'WP_User' ) ) {
$hash = md5( $author->user_email );
}
if ( ! $hash ) {
return;
}
?>
<div class="grofile-hash-map-<?php echo $hash; ?>">
<?php foreach ( $data as $key => $value ) : ?>
<span class="<?php echo esc_attr( $key ); ?>"><?php echo esc_html( $value ); ?></span>
<?php endforeach; ?>
</div>
<?php
}
/* API */
/**
* Returns the PHP callbacks for data sources.
*
* 'grofiles_hovercards_data_callbacks' filter
*
* @return array( data_key => data_callback, ... )
*/
function grofiles_hovercards_data_callbacks() {
/**
* Filter the Gravatar Hovercard PHP callbacks.
*
* @module gravatar-hovercards
*
* @since 1.1.0
*
* @param array $args Array of data callbacks.
*/
return apply_filters( 'grofiles_hovercards_data_callbacks', array() );
}
/**
* Keyed JSON object containing all profile data provided by registered callbacks
*
* @param int|strung $author User ID or email address
*
* @return array( data_key => data, ... )
*/
function grofiles_hovercards_data( $author ) {
$r = array();
foreach ( grofiles_hovercards_data_callbacks() as $key => $callback ) {
if ( !is_callable( $callback ) )
continue;
$data = call_user_func( $callback, $author, $key );
if ( !is_null( $data ) )
$r[$key] = $data;
}
return $r;
}
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