Preview: functions.wp-styles.php
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<?php
/**
* Dependencies API: Styles functions
*
* @since 2.6.0
*
* @package WordPress
* @subpackage Dependencies
*/
/**
* Initializes $wp_styles if it has not been set.
*
* @since 4.2.0
*
* @global WP_Styles $wp_styles
*
* @return WP_Styles WP_Styles instance.
*/
function wp_styles() {
global $wp_styles;
if ( ! ( $wp_styles instanceof WP_Styles ) ) {
$wp_styles = new WP_Styles();
}
return $wp_styles;
}
/**
* Displays styles that are in the $handles queue.
*
* Passing an empty array to $handles prints the queue,
* passing an array with one string prints that style,
* and passing an array of strings prints those styles.
*
* @since 2.6.0
*
* @global WP_Styles $wp_styles The WP_Styles object for printing styles.
*
* @param string|bool|array $handles Styles to be printed. Default 'false'.
* @return string[] On success, an array of handles of processed WP_Dependencies items; otherwise, an empty array.
*/
function wp_print_styles( $handles = false ) {
global $wp_styles;
if ( '' === $handles ) { // For 'wp_head'.
$handles = false;
}
if ( ! $handles ) {
/**
* Fires before styles in the $handles queue are printed.
*
* @since 2.6.0
*/
do_action( 'wp_print_styles' );
}
_wp_scripts_maybe_doing_it_wrong( __FUNCTION__ );
if ( ! ( $wp_styles instanceof WP_Styles ) ) {
if ( ! $handles ) {
return array(); // No need to instantiate if nothing is there.
}
}
return wp_styles()->do_items( $handles );
}
/**
* Adds extra CSS styles to a registered stylesheet.
*
* Styles will only be added if the stylesheet is already in the queue.
* Accepts a string $data containing the CSS. If two or more CSS code blocks
* are added to the same stylesheet $handle, they will be printed in the order
* they were added, i.e. the latter added styles can redeclare the previous.
*
* @see WP_Styles::add_inline_style()
*
* @since 3.3.0
*
* @param string $handle Name of the stylesheet to add the extra styles to.
* @param string $data String containing the CSS styles to be added.
* @return bool True on success, false on failure.
*/
function wp_add_inline_style( $handle, $data ) {
_wp_scripts_maybe_doing_it_wrong( __FUNCTION__, $handle );
if ( false !== stripos( $data, '</style>' ) ) {
_doing_it_wrong(
__FUNCTION__,
sprintf(
/* translators: 1: <style>, 2: wp_add_inline_style() */
__( 'Do not pass %1$s tags to %2$s.' ),
'<code><style></code>',
'<code>wp_add_inline_style()</code>'
),
'3.7.0'
);
$data = trim( preg_replace( '#<style[^>]*>(.*)</style>#is', '$1', $data ) );
}
return wp_styles()->add_inline_style( $handle, $data );
}
/**
* Registers a CSS stylesheet.
*
* @see WP_Dependencies::add()
* @link https://www.w3.org/TR/CSS2/media.html#media-types List of CSS media types.
*
* @since 2.6.0
* @since 4.3.0 A return value was added.
*
* @param string $handle Name of the stylesheet. Should be unique.
* @param string|false $src Full URL of the stylesheet, or path of the stylesheet relative to the WordPress root directory.
* If source is set to false, stylesheet is an alias of other stylesheets it depends on.
* @param string[] $deps Optional. An array of registered stylesheet handles this stylesheet depends on. Default empty array.
* @param string|bool|null $ver Optional. String specifying stylesheet version number, if it has one, which is added to the URL
* as a query string for cache busting purposes. If version is set to false, a version
* number is automatically added equal to current installed WordPress version.
* If set to null, no version is added.
* @param string $media Optional. The media for which this stylesheet has been defined.
* Default 'all'. Accepts media types like 'all', 'print' and 'screen', or media queries like
* '(orientation: portrait)' and '(max-width: 640px)'.
* @return bool Whether the style has been registered. True on success, false on failure.
*/
function wp_register_style( $handle, $src, $deps = array(), $ver = false, $media = 'all' ) {
_wp_scripts_maybe_doing_it_wrong( __FUNCTION__, $handle );
return wp_styles()->add( $handle, $src, $deps, $ver, $media );
}
/**
* Removes a registered stylesheet.
*
* @see WP_Dependencies::remove()
*
* @since 2.1.0
*
* @param string $handle Name of the stylesheet to be removed.
*/
function wp_deregister_style( $handle ) {
_wp_scripts_maybe_doing_it_wrong( __FUNCTION__, $handle );
wp_styles()->remove( $handle );
}
/**
* Enqueues a CSS stylesheet.
*
* Registers the style if source provided (does NOT overwrite) and enqueues.
*
* @see WP_Dependencies::add()
* @see WP_Dependencies::enqueue()
* @link https://www.w3.org/TR/CSS2/media.html#media-types List of CSS media types.
*
* @since 2.6.0
*
* @param string $handle Name of the stylesheet. Should be unique.
* @param string $src Full URL of the stylesheet, or path of the stylesheet relative to the WordPress root directory.
* Default empty.
* @param string[] $deps Optional. An array of registered stylesheet handles this stylesheet depends on. Default empty array.
* @param string|bool|null $ver Optional. String specifying stylesheet version number, if it has one, which is added to the URL
* as a query string for cache busting purposes. If version is set to false, a version
* number is automatically added equal to current installed WordPress version.
* If set to null, no version is added.
* @param string $media Optional. The media for which this stylesheet has been defined.
* Default 'all'. Accepts media types like 'all', 'print' and 'screen', or media queries like
* '(orientation: portrait)' and '(max-width: 640px)'.
*/
function wp_enqueue_style( $handle, $src = '', $deps = array(), $ver = false, $media = 'all' ) {
_wp_scripts_maybe_doing_it_wrong( __FUNCTION__, $handle );
$wp_styles = wp_styles();
if ( $src ) {
$_handle = explode( '?', $handle );
$wp_styles->add( $_handle[0], $src, $deps, $ver, $media );
}
$wp_styles->enqueue( $handle );
}
/**
* Removes a previously enqueued CSS stylesheet.
*
* @see WP_Dependencies::dequeue()
*
* @since 3.1.0
*
* @param string $handle Name of the stylesheet to be removed.
*/
function wp_dequeue_style( $handle ) {
_wp_scripts_maybe_doing_it_wrong( __FUNCTION__, $handle );
wp_styles()->dequeue( $handle );
}
/**
* Checks whether a CSS stylesheet has been added to the queue.
*
* @since 2.8.0
*
* @param string $handle Name of the stylesheet.
* @param string $status Optional. Status of the stylesheet to check. Default 'enqueued'.
* Accepts 'enqueued', 'registered', 'queue', 'to_do', and 'done'.
* @return bool Whether style is queued.
*/
function wp_style_is( $handle, $status = 'enqueued' ) {
_wp_scripts_maybe_doing_it_wrong( __FUNCTION__, $handle );
return (bool) wp_styles()->query( $handle, $status );
}
/**
* Adds metadata to a CSS stylesheet.
*
* Works only if the stylesheet has already been registered.
*
* Possible values for $key and $value:
* 'conditional' string Comments for IE 6, lte IE 7 etc.
* 'rtl' bool|string To declare an RTL stylesheet.
* 'suffix' string Optional suffix, used in combination with RTL.
* 'alt' bool For rel="alternate stylesheet".
* 'title' string For preferred/alternate stylesheets.
* 'path' string The absolute path to a stylesheet. Stylesheet will
* load inline when 'path' is set.
*
* @see WP_Dependencies::add_data()
*
* @since 3.6.0
* @since 5.8.0 Added 'path' as an official value for $key.
* See {@see wp_maybe_inline_styles()}.
*
* @param string $handle Name of the stylesheet.
* @param string $key Name of data point for which we're storing a value.
* Accepts 'conditional', 'rtl' and 'suffix', 'alt', 'title' and 'path'.
* @param mixed $value String containing the CSS data to be added.
* @return bool True on success, false on failure.
*/
function wp_style_add_data( $handle, $key, $value ) {
return wp_styles()->add_data( $handle, $key, $value );
}
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