| 1 |
<?php |
| 2 |
/** |
| 3 |
* Server-side rendering of the `core/categories` block. |
| 4 |
* |
| 5 |
* @package WordPress |
| 6 |
*/ |
| 7 |
|
| 8 |
/** |
| 9 |
* Renders the `core/categories` block on server. |
| 10 |
* |
| 11 |
* @param array $attributes The block attributes. |
| 12 |
* |
| 13 |
* @return string Returns the categories list/dropdown markup. |
| 14 |
*/ |
| 15 |
function gutenberg_render_block_core_categories( $attributes ) { |
| 16 |
static $block_id = 0; |
| 17 |
++$block_id; |
| 18 |
|
| 19 |
$args = array( |
| 20 |
'echo' => false, |
| 21 |
'hierarchical' => ! empty( $attributes['showHierarchy'] ), |
| 22 |
'orderby' => 'name', |
| 23 |
'show_count' => ! empty( $attributes['showPostCounts'] ), |
| 24 |
'title_li' => '', |
| 25 |
'hide_empty' => empty( $attributes['showEmpty'] ), |
| 26 |
); |
| 27 |
if ( ! empty( $attributes['showOnlyTopLevel'] ) && $attributes['showOnlyTopLevel'] ) { |
| 28 |
$args['parent'] = 0; |
| 29 |
} |
| 30 |
|
| 31 |
if ( ! empty( $attributes['displayAsDropdown'] ) ) { |
| 32 |
$id = 'wp-block-categories-' . $block_id; |
| 33 |
$args['id'] = $id; |
| 34 |
$args['show_option_none'] = __( 'Select Category' ); |
| 35 |
$wrapper_markup = '<div %1$s><label class="screen-reader-text" for="' . esc_attr( $id ) . '">' . __( 'Categories' ) . '</label>%2$s</div>'; |
| 36 |
$items_markup = wp_dropdown_categories( $args ); |
| 37 |
$type = 'dropdown'; |
| 38 |
|
| 39 |
if ( ! is_admin() ) { |
| 40 |
// Inject the dropdown script immediately after the select dropdown. |
| 41 |
$items_markup = preg_replace( |
| 42 |
'#(?<=</select>)#', |
| 43 |
gutenberg_build_dropdown_script_block_core_categories( $id ), |
| 44 |
$items_markup, |
| 45 |
1 |
| 46 |
); |
| 47 |
} |
| 48 |
} else { |
| 49 |
$wrapper_markup = '<ul %1$s>%2$s</ul>'; |
| 50 |
$items_markup = wp_list_categories( $args ); |
| 51 |
$type = 'list'; |
| 52 |
} |
| 53 |
|
| 54 |
$wrapper_attributes = get_block_wrapper_attributes( array( 'class' => "wp-block-categories-{$type}" ) ); |
| 55 |
|
| 56 |
return sprintf( |
| 57 |
$wrapper_markup, |
| 58 |
$wrapper_attributes, |
| 59 |
$items_markup |
| 60 |
); |
| 61 |
} |
| 62 |
|
| 63 |
/** |
| 64 |
* Generates the inline script for a categories dropdown field. |
| 65 |
* |
| 66 |
* @param string $dropdown_id ID of the dropdown field. |
| 67 |
* |
| 68 |
* @return string Returns the dropdown onChange redirection script. |
| 69 |
*/ |
| 70 |
function gutenberg_build_dropdown_script_block_core_categories( $dropdown_id ) { |
| 71 |
ob_start(); |
| 72 |
?> |
| 73 |
<script type='text/javascript'> |
| 74 |
/* <![CDATA[ */ |
| 75 |
( function() { |
| 76 |
var dropdown = document.getElementById( '<?php echo esc_js( $dropdown_id ); ?>' ); |
| 77 |
function gutenberg_onCatChange() { |
| 78 |
if ( dropdown.options[ dropdown.selectedIndex ].value > 0 ) { |
| 79 |
location.href = "<?php echo esc_url( home_url() ); ?>/?cat=" + dropdown.options[ dropdown.selectedIndex ].value; |
| 80 |
} |
| 81 |
} |
| 82 |
dropdown.onchange = gutenberg_onCatChange; |
| 83 |
})(); |
| 84 |
/* ]]> */ |
| 85 |
</script> |
| 86 |
<?php |
| 87 |
return ob_get_clean(); |
| 88 |
} |
| 89 |
|
| 90 |
/** |
| 91 |
* Registers the `core/categories` block on server. |
| 92 |
*/ |
| 93 |
function gutenberg_register_block_core_categories() { |
| 94 |
register_block_type_from_metadata( |
| 95 |
__DIR__ . '/categories', |
| 96 |
array( |
| 97 |
'render_callback' => 'gutenberg_render_block_core_categories', |
| 98 |
) |
| 99 |
); |
| 100 |
} |
| 101 |
add_action( 'init', 'gutenberg_register_block_core_categories', 20 ); |
| 102 |
|
