1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
|
<?php
/**
* Class AMP_Block_Sanitizer.
*
* @package AMP
*/
/**
* Class AMP_Block_Sanitizer
*
* Modifies elements created as blocks to match the blocks' AMP-specific configuration.
*
* @internal
*/
class AMP_Block_Sanitizer extends AMP_Base_Sanitizer {
/**
* Tag.
*
* @var string Figure tag to identify wrapper around AMP elements.
* @since 1.0
*/
public static $tag = 'figure';
/**
* Sanitize the AMP elements contained by <figure> element where necessary.
*
* @since 0.2
*/
public function sanitize() {
$nodes = $this->dom->getElementsByTagName( self::$tag );
$num_nodes = $nodes->length;
if ( 0 === $num_nodes ) {
return;
}
for ( $i = $num_nodes - 1; $i >= 0; $i-- ) {
/**
* Element.
*
* @var DOMElement $node
*/
$node = $nodes->item( $i );
// We are only looking for <figure> elements which have wp-block-embed as class.
$classes = preg_split( '/\s+/', trim( $node->getAttribute( 'class' ) ) );
if ( ! in_array( 'wp-block-embed', $classes, true ) ) {
continue;
}
$responsive_width = null;
$responsive_height = null;
// Remove classes related to aspect ratios as the embed's responsiveness will be handled by AMP's layout system.
$classes = array_filter(
$classes,
static function ( $class ) use ( &$responsive_width, &$responsive_height ) {
if ( preg_match( '/^wp-embed-aspect-(?P<width>\d+)-(?P<height>\d+)$/', $class, $matches ) ) {
$responsive_width = $matches['width'];
$responsive_height = $matches['height'];
return false;
}
return 'wp-has-aspect-ratio' !== $class;
}
);
$node->setAttribute( 'class', implode( ' ', $classes ) );
// We're looking for <figure> elements that have one child node only.
if ( 1 !== count( $node->childNodes ) ) {
continue;
}
// @todo Should this only be done if the body has a .wp-embed-responsive class (i.e. current_theme_supports( 'responsive-embeds' ))?
// @todo Should we consider just eliminating the .wp-block-embed__wrapper element since unnecessary?
// For visual parity with blocks in non-AMP pages, override the oEmbed's natural responsive dimensions with the aspect ratio specified in the wp-embed-aspect-* class name.
if ( $responsive_width && $responsive_height ) {
$amp_element = $this->dom->xpath->query( './div[ contains( @class, "wp-block-embed__wrapper" ) ]/*[ @layout = "responsive" or @layout = "intrinsic" ]', $node )->item( 0 );
if ( $amp_element instanceof DOMElement ) {
$amp_element->setAttribute( 'width', $responsive_width );
$amp_element->setAttribute( 'height', $responsive_height );
$amp_element->setAttribute( 'layout', 'responsive' );
}
}
$attributes = AMP_DOM_Utils::get_node_attributes_as_assoc_array( $node );
// We are looking for <figure> elements with layout attribute only.
if (
! isset( $attributes['data-amp-layout'] ) &&
! isset( $attributes['data-amp-noloading'] ) &&
! isset( $attributes['data-amp-lightbox'] )
) {
continue;
}
$amp_el_found = false;
foreach ( $node->childNodes as $child_node ) {
if ( ! $child_node instanceof DOMElement ) {
continue;
}
// We are looking for child elements which start with 'amp-'.
if ( 0 !== strpos( $child_node->tagName, 'amp-' ) ) {
continue;
}
$amp_el_found = true;
$this->set_attributes( $child_node, $node, $attributes );
}
if ( false === $amp_el_found ) {
continue;
}
$this->did_convert_elements = true;
}
}
/**
* Sets necessary attributes to both parent and AMP element node.
*
* @param DOMElement $node AMP element node.
* @param DOMElement $parent_node <figure> node.
* @param array $attributes Current attributes of the AMP element.
*/
protected function set_attributes( DOMElement $node, DOMElement $parent_node, $attributes ) {
if ( isset( $attributes['data-amp-layout'] ) ) {
$node->setAttribute( 'layout', $attributes['data-amp-layout'] );
}
if ( isset( $attributes['data-amp-noloading'] ) && true === filter_var( $attributes['data-amp-noloading'], FILTER_VALIDATE_BOOLEAN ) ) {
$node->setAttribute( 'noloading', '' );
}
$layout = $node->getAttribute( 'layout' );
// The width has to be unset / auto in case of fixed-height.
if ( 'fixed-height' === $layout ) {
if ( ! isset( $attributes['height'] ) ) {
$node->setAttribute( 'height', self::FALLBACK_HEIGHT );
}
$node->setAttribute( 'width', 'auto' );
$height = $node->getAttribute( 'height' );
if ( is_numeric( $height ) ) {
$height .= 'px';
}
$parent_node->setAttribute( 'style', "height: $height; width: auto;" );
// The parent element should have width/height set and position set in case of 'fill'.
} elseif ( 'fill' === $layout ) {
if ( ! isset( $attributes['height'] ) ) {
$attributes['height'] = self::FALLBACK_HEIGHT;
}
$parent_node->setAttribute( 'style', 'position:relative; width: 100%; height: ' . $attributes['height'] . 'px;' );
$node->removeAttribute( 'width' );
$node->removeAttribute( 'height' );
} elseif ( 'responsive' === $layout ) {
$parent_node->setAttribute( 'style', 'position:relative; width: 100%; height: auto' );
} elseif ( 'fixed' === $layout ) {
if ( ! isset( $attributes['height'] ) ) {
$node->setAttribute( 'height', self::FALLBACK_HEIGHT );
}
}
// Set the fallback layout in case needed.
$attributes = AMP_DOM_Utils::get_node_attributes_as_assoc_array( $node );
$attributes = $this->set_layout( $attributes );
if ( $layout !== $attributes['layout'] ) {
$node->setAttribute( 'layout', $attributes['layout'] );
}
}
}
|