<?php

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/**

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* Twitter Timeline Shortcode.

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*

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* Examples:

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* [twitter-timeline username=jetpack]

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*

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* @package automattic/jetpack

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*/

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if ( ! defined( 'ABSPATH' ) ) {

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exit( 0 );

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}

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/**

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* Render the Twitter shortcode.

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*

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* @param array $atts Shortcode attributes.

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*/

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function twitter_timeline_shortcode( $atts ) {

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$default_atts = array(

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'username' => '',

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'id' => '',

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'width' => '450',

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'height' => '282',

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);

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$atts = shortcode_atts( $default_atts, $atts, 'twitter-timeline' );

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$atts['username'] = preg_replace( '/[^A-Za-z0-9_]+/', '', $atts['username'] );

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if ( empty( $atts['username'] ) && ! is_numeric( $atts['id'] ) ) {

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return '<!-- ' . __( 'Must specify Twitter Timeline id or username.', 'jetpack' ) . ' -->';

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}

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$output = '<a class="twitter-timeline"';

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/** This filter is documented in modules/shortcodes/tweet.php */

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$partner = apply_filters( 'jetpack_twitter_partner_id', 'jetpack' );

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if ( ! empty( $partner ) ) {

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$output .= ' data-partner="' . esc_attr( $partner ) . '"';

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}

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if ( is_numeric( $atts['width'] ) ) {

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$output .= ' data-width="' . esc_attr( $atts['width'] ) . '"';

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}

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if ( is_numeric( $atts['height'] ) ) {

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$output .= ' data-height="' . esc_attr( $atts['height'] ) . '"';

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}

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if ( is_numeric( $atts['id'] ) ) {

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$output .= ' data-widget-id="' . esc_attr( $atts['id'] ) . '"';

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}

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if ( ! empty( $atts['username'] ) ) {

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$output .= ' href="' . esc_url( 'https://twitter.com/' . $atts['username'] ) . '"';

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}

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$output .= '>';

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$output .= sprintf(

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/* Translators: placeholder is a Twitter username. */

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__( 'Tweets by @%s', 'jetpack' ),

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$atts['username']

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);

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$output .= '</a>';

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wp_enqueue_script( 'jetpack-twitter-timeline' );

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return $output;

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}

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add_shortcode( 'twitter-timeline', 'twitter_timeline_shortcode' );

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/**

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* Enqueue the js used by the Twitter shortcode.

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*/

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function twitter_timeline_js() {

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if ( is_customize_preview() ) {

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wp_enqueue_script( 'jetpack-twitter-timeline' );

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}

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}

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add_action( 'wp_enqueue_scripts', 'twitter_timeline_js' );

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