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<?php |
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/* |
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Plugin Name: Social Media Icons Widget |
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Description: A simple widget that displays social media icons |
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Author: Chris Rudzki |
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*/ |
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// Creating the widget |
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class WPCOM_social_media_icons_widget extends WP_Widget { |
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private $defaults; |
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private $services; |
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public function __construct() { |
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parent::__construct( |
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'wpcom_social_media_icons_widget', |
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/** This filter is documented in modules/widgets/facebook-likebox.php */ |
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apply_filters( 'jetpack_widget_name', esc_html__( 'Social Media Icons', 'jetpack' ) ), |
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array( |
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'description' => __( 'A simple widget that displays social media icons.', 'jetpack' ), |
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'customize_selective_refresh' => true, |
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) |
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); |
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$this->defaults = array( |
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'title' => __( 'Social', 'jetpack' ), |
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'facebook_username' => '', |
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'twitter_username' => '', |
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'instagram_username' => '', |
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'pinterest_username' => '', |
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'linkedin_username' => '', |
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'github_username' => '', |
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'youtube_username' => '', |
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'vimeo_username' => '', |
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'googleplus_username' => '', |
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); |
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$this->services = array( |
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'facebook' => array( 'Facebook', 'https://www.facebook.com/%s/' ), |
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'twitter' => array( 'Twitter', 'https://twitter.com/%s/' ), |
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'instagram' => array( 'Instagram', 'https://instagram.com/%s/' ), |
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'pinterest' => array( 'Pinterest', 'https://www.pinterest.com/%s/' ), |
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'linkedin' => array( 'LinkedIn', 'https://www.linkedin.com/in/%s/' ), |
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'github' => array( 'GitHub', 'https://github.com/%s/' ), |
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'youtube' => array( 'YouTube', 'https://www.youtube.com/%s/' ), |
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'vimeo' => array( 'Vimeo', 'https://vimeo.com/%s/' ), |
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'googleplus' => array( 'Google+', 'https://plus.google.com/u/0/%s/' ), |
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); |
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View Code Duplication |
if ( is_active_widget( false, false, $this->id_base ) || is_customize_preview() ) { |
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add_action( 'wp_enqueue_scripts', array( $this, 'enqueue_style' ) ); |
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} |
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} |
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public function enqueue_style() { |
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wp_register_style( 'jetpack_social_media_icons_widget', plugins_url( 'social-media-icons/style.css', __FILE__ ), array(), '20150602' ); |
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wp_enqueue_style( 'jetpack_social_media_icons_widget' ); |
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} |
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private function check_social_icons() { |
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global $wp_styles; |
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foreach ( $wp_styles->queue as $handle ) { |
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if ( false !== stristr( $handle, 'social-logos' ) ) { |
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return $handle; |
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} |
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} |
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return false; |
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} |
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// front end |
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public function widget( $args, $instance ) { |
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$instance = wp_parse_args( (array) $instance, $this->defaults ); |
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/** This filter is documented in core/src/wp-includes/default-widgets.php */ |
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$instance['title'] = apply_filters( 'widget_title', $instance['title'], $instance, $this->id_base ); |
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if ( ! $this->check_social_icons() ) { |
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wp_enqueue_style( 'social-logos' ); |
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} |
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$index = 10; |
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$html = array(); |
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$alt_text = esc_attr__( 'View %1$s’s profile on %2$s', 'jetpack' ); |
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foreach ( $this->services as $service => $data ) { |
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list( $service_name, $url ) = $data; |
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if ( ! isset( $instance[ $service . '_username' ] ) ) { |
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continue; |
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} |
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$username = $link_username = $instance[ $service . '_username' ]; |
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if ( empty( $username ) ) { |
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continue; |
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} |
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$index += 10; |
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if ( |
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$service === 'googleplus' |
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&& ! is_numeric( $username ) |
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&& substr( $username, 0, 1 ) !== "+" |
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) { |
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$link_username = "+" . $username; |
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} |
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if ( $service === 'youtube' && substr( $username, 0, 2 ) == 'UC' ) { |
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$link_username = "channel/" . $username; |
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} else if ( $service === 'youtube' ) { |
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$link_username = "user/" . $username; |
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} |
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/** |
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* Fires for each profile link in the social icons widget. Can be used |
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* to change the links for certain social networks if needed. |
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* |
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* @module widgets |
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* |
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* @since 3.8.0 |
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* |
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* @param string $url the currently processed URL |
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* @param string $service the lowercase service slug, e.g. 'facebook', 'youtube', etc. |
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*/ |
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$link = apply_filters( 'jetpack_social_media_icons_widget_profile_link', esc_url( sprintf( $url, $link_username ) ), $service ); |
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$html[ $index ] = |
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'<a title="' . sprintf( $alt_text, esc_attr( $username ), $service_name ) |
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. '" href="' . $link |
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. '" class="genericon genericon-' . $service . '" target="_blank"><span class="screen-reader-text">' |
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. sprintf( $alt_text, esc_html( $username ), $service_name ) |
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. '</span></a>'; |
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} |
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/** |
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* Fires at the end of the list of Social Media accounts. |
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* Can be used to add a new Social Media Site to the Social Media Icons Widget. |
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* The filter function passed the array of HTML entries that will be sorted |
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* by key, each wrapped in a list item element and output as an unsorted list. |
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* |
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* @module widgets |
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* |
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* @since 3.8.0 |
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* |
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* @param array $html Associative array of HTML snippets per each icon. |
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*/ |
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$html = apply_filters( 'jetpack_social_media_icons_widget_array', $html ); |
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ksort( $html ); |
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$html = '<ul><li>' . join( '</li><li>', $html ) . '</li></ul>'; |
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View Code Duplication |
if ( ! empty( $instance['title'] ) ) { |
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$html = $args['before_title'] . esc_html( $instance['title'] ) . $args['after_title'] . $html; |
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} |
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$html = $args['before_widget'] . $html . $args['after_widget']; |
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/** |
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* Filters the Social Media Icons widget output. |
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* |
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* @module widgets |
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* |
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* @since 3.6.0 |
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* |
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* @param string $html Social Media Icons widget html output. |
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*/ |
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echo apply_filters( 'jetpack_social_media_icons_widget_output', $html ); |
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} |
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// back end |
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public function form( $instance ) { |
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$instance = wp_parse_args( (array) $instance, $this->defaults ); |
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?> |
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<p> |
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<label for="<?php echo esc_attr( $this->get_field_id( 'title' ) ); ?>"><?php _e( 'Title:', 'jetpack' ); ?></label> |
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<input |
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class="widefat" |
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id="<?php echo esc_attr( $this->get_field_id( 'title' ) ); ?>" |
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name="<?php echo esc_attr( $this->get_field_name( 'title' ) ); ?>" |
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type="text" |
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value="<?php echo esc_attr( $instance['title'] ); ?>" |
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/> |
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</p> |
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<?php |
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foreach ( $this->services as $service => $data ) { |
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list( $service_name, $url ) = $data; |
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?> |
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<p> |
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<label for="<?php echo esc_attr( $this->get_field_id( $service . '_username' ) ); ?>"> |
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<?php |
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/* translators: %s is a social network name, e.g. Facebook */ |
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printf( __( '%s username:', 'jetpack' ), $service_name ); |
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?> |
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</label> |
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<input |
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class="widefat" |
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id="<?php echo esc_attr( $this->get_field_id( $service . '_username' ) ); ?>" |
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name="<?php echo esc_attr( $this->get_field_name( $service . '_username' ) ); ?>" |
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type="text" |
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value="<?php echo esc_attr( $instance[ $service . '_username'] ); ?>" |
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/> |
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</p> |
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<?php |
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} |
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} |
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// updating widget settings |
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public function update( $new_instance, $old_instance ) { |
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$instance = (array) $old_instance; |
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foreach ( $new_instance as $field => $value ) { |
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$instance[$field] = sanitize_text_field( $new_instance[$field] ); |
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} |
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// Stats |
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$stats = $instance; |
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unset( $stats['title'] ); |
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$stats = array_filter( $stats ); |
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$stats = array_keys( $stats ); |
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$stats = array_map( array( $this, 'remove_username' ), $stats ); |
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foreach ( $stats as $val ) { |
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/** |
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* Fires for each Social Media account being saved in the Social Media Widget settings. |
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* |
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* @module widgets |
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* |
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* @since 3.6.0 |
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* |
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* @param string social-media-links-widget-svcs Type of action to track. |
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* @param string $val Name of the Social Media account being saved. |
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*/ |
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do_action( 'jetpack_bump_stats_extras', 'social-media-links-widget-svcs', $val ) ; |
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} |
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return $instance; |
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} |
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// Remove username from value before to save stats |
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public function remove_username( $val ) { |
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return str_replace( '_username', '', $val ); |
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} |
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} // class ends here |
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// register and load the widget |
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function wpcom_social_media_icons_widget_load_widget() { |
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register_widget( 'wpcom_social_media_icons_widget' ); |
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} |
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add_action( 'widgets_init', 'wpcom_social_media_icons_widget_load_widget' ); |
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This checks looks for assignemnts to variables using the
list(...)
function, where not all assigned variables are subsequently used.Consider the following code example.
Only the variables
$a
and$c
are used. There was no need to assign$b
.Instead, the list call could have been.