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slideshare.php
136 lines
| 1 | <?php |
| 2 | /** |
| 3 | * Slideshare shortcode |
| 4 | * |
| 5 | * Formats: |
| 6 | * Old style (still compatible): [slideshare id=5342235&doc=camprock-101002163655-phpapp01&w=300&h=200] |
| 7 | * New style: [slideshare id=5342235&w=300&h=200&fb=0&mw=0&mh=0&sc=no] |
| 8 | * |
| 9 | * Legend: |
| 10 | * id = Document ID provided by Slideshare |
| 11 | * w = Width of iFrame (int) |
| 12 | * h = Height of iFrame (int) |
| 13 | * fb = iFrame frameborder (int) |
| 14 | * mw = iFrame marginwidth (int) |
| 15 | * mh = iFrame marginheight (int) |
| 16 | * sc = iFrame Scrollbar (yes/no) |
| 17 | * pro = Slideshare Pro (yes/no) |
| 18 | * style = Inline CSS (string) |
| 19 | * |
| 20 | * @package automattic/jetpack |
| 21 | */ |
| 22 | |
| 23 | /** |
| 24 | * Register and display shortcode. |
| 25 | * |
| 26 | * @param array $atts Shortcode attributes. |
| 27 | */ |
| 28 | function slideshare_shortcode( $atts ) { |
| 29 | global $content_width; |
| 30 | |
| 31 | $params = shortcode_new_to_old_params( $atts ); |
| 32 | parse_str( $params, $arguments ); |
| 33 | |
| 34 | if ( empty( $arguments ) ) { |
| 35 | return '<!-- SlideShare error: no arguments -->'; |
| 36 | } |
| 37 | |
| 38 | $attr = shortcode_atts( |
| 39 | array( |
| 40 | 'id' => '', |
| 41 | 'w' => '', |
| 42 | 'h' => '', |
| 43 | 'fb' => '', |
| 44 | 'mw' => '', |
| 45 | 'mh' => '', |
| 46 | 'sc' => '', |
| 47 | 'pro' => '', |
| 48 | 'style' => '', |
| 49 | ), |
| 50 | $arguments |
| 51 | ); |
| 52 | |
| 53 | // check that the Slideshare ID contains letters, numbers and query strings. |
| 54 | $pattern = '/[^-_a-zA-Z0-9?=&]/'; |
| 55 | if ( empty( $attr['id'] ) || preg_match( $pattern, $attr['id'] ) ) { |
| 56 | return '<!-- SlideShare error: id is missing or has illegal characters -->'; |
| 57 | } |
| 58 | |
| 59 | // check the width/height. |
| 60 | $w = (int) $attr['w']; |
| 61 | |
| 62 | // If no width was specified (or uses the wrong format), and if we have a $content_width, use that. |
| 63 | if ( empty( $w ) && ! empty( $content_width ) ) { |
| 64 | $w = (int) $content_width; |
| 65 | } elseif ( $w < 300 || $w > 1600 ) { // If width was specified, but is too small/large, set default value. |
| 66 | $w = 425; |
| 67 | } else { |
| 68 | $w = (int) $w; |
| 69 | } |
| 70 | |
| 71 | $h = ceil( $w * 348 / 425 ); // Note: user-supplied height is ignored. |
| 72 | |
| 73 | if ( ! empty( $attr['pro'] ) ) { |
| 74 | $source = 'https://www.slideshare.net/slidesharepro/' . $attr['id']; |
| 75 | } else { |
| 76 | $source = 'https://www.slideshare.net/slideshow/embed_code/' . $attr['id']; |
| 77 | } |
| 78 | |
| 79 | if ( isset( $attr['rel'] ) ) { |
| 80 | $source = add_query_arg( 'rel', (int) $attr['rel'], $source ); |
| 81 | } |
| 82 | |
| 83 | if ( ! empty( $attr['startSlide'] ) ) { |
| 84 | $source = add_query_arg( 'startSlide', (int) $attr['startSlide'], $source ); |
| 85 | } |
| 86 | |
| 87 | $player = sprintf( "<iframe src='%s' width='%d' height='%d'", esc_url( $source ), $w, $h ); |
| 88 | |
| 89 | // check the frameborder. |
| 90 | if ( ! empty( $attr['fb'] ) || '0' === $attr['fb'] ) { |
| 91 | $player .= " frameborder='" . (int) $attr['fb'] . "'"; |
| 92 | } |
| 93 | |
| 94 | $is_amp = ( class_exists( 'Jetpack_AMP_Support' ) && Jetpack_AMP_Support::is_amp_request() ); |
| 95 | |
| 96 | if ( ! $is_amp ) { |
| 97 | // check the margin width; if not empty, cast as int. |
| 98 | if ( ( ! empty( $attr['mw'] ) || '0' === $attr['mw'] ) ) { |
| 99 | $player .= " marginwidth='" . (int) $attr['mw'] . "'"; |
| 100 | } |
| 101 | |
| 102 | // check the margin height, if not empty, cast as int. |
| 103 | if ( ( ! empty( $attr['mh'] ) || '0' === $attr['mh'] ) ) { |
| 104 | $player .= " marginheight='" . (int) $attr['mh'] . "'"; |
| 105 | } |
| 106 | } |
| 107 | |
| 108 | if ( ! empty( $attr['style'] ) ) { |
| 109 | $player .= " style='" . esc_attr( $attr['style'] ) . "'"; |
| 110 | } |
| 111 | |
| 112 | // check the scrollbar; cast as a lowercase string for comparison. |
| 113 | if ( ! empty( $attr['sc'] ) ) { |
| 114 | $sc = strtolower( $attr['sc'] ); |
| 115 | |
| 116 | if ( in_array( $sc, array( 'yes', 'no' ), true ) ) { |
| 117 | $player .= " scrolling='" . $sc . "'"; |
| 118 | } |
| 119 | } |
| 120 | |
| 121 | $player .= ' sandbox="allow-popups allow-scripts allow-same-origin allow-presentation" allowfullscreen webkitallowfullscreen mozallowfullscreen></iframe>'; |
| 122 | |
| 123 | /** |
| 124 | * Filter the returned SlideShare shortcode. |
| 125 | * |
| 126 | * @module shortcodes |
| 127 | * |
| 128 | * @since 4.7.0 |
| 129 | * |
| 130 | * @param string $player The iframe to return. |
| 131 | * @param array $atts The attributes specified in the shortcode. |
| 132 | */ |
| 133 | return apply_filters( 'jetpack_slideshare_shortcode', $player, $atts ); |
| 134 | } |
| 135 | add_shortcode( 'slideshare', 'slideshare_shortcode' ); |
| 136 |