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Script Loader: Introduce wp_add_inline_script().

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This new function can be used to add inline JavaScript before and after enqueued scripts, just like `wp_add_inline_style()` works for CSS.

Props atimmer, abiralneupane, ocean90, swissspidy.
Fixes #14853.

git-svn-id: https://develop.svn.wordpress.org/trunk@36633 602fd350-edb4-49c9-b593-d223f7449a82
This commit is contained in:
Pascal Birchler
2016-02-23 16:43:41 +00:00
parent 0338c8b3a3
commit 0e13a57288
4 changed files with 315 additions and 3 deletions
Download Patch File Download Diff File Expand all files Collapse all files
src/wp-includes/class.wp-scripts.php
+80 -3
View File
@@ -25,6 +25,7 @@ class WP_Scripts extends WP_Dependencies {
public $concat_version = '';
public $do_concat = false;
public $print_html = '';
public $print_html_before = '';
public $print_code = '';
public $ext_handles = '';
public $ext_version = '';
@@ -144,6 +145,17 @@ class WP_Scripts extends WP_Dependencies {
$cond_after = "<![endif]-->\n";
}
$before_handle = $this->print_inline_script( $handle, 'before', false );
$after_handle = $this->print_inline_script( $handle, 'after', false );
if ( $before_handle ) {
$before_handle = sprintf( "<script type='text/javascript'>\n%s\n</script>\n", $before_handle );
}
if ( $after_handle ) {
$after_handle = sprintf( "<script type='text/javascript'>\n%s\n</script>\n", $after_handle );
}
if ( $this->do_concat ) {
/**
* Filter the script loader source.
@@ -154,7 +166,12 @@ class WP_Scripts extends WP_Dependencies {
* @param string $handle Script handle.
*/
$srce = apply_filters( 'script_loader_src', $src, $handle );
if ( $this->in_default_dir( $srce ) && ! $conditional ) {
if ( $before_handle && ! $conditional ) {
$this->print_html_before .= $before_handle;
}
if ( $this->in_default_dir( $srce ) && ! $conditional && ! $after_handle ) {
$this->print_code .= $this->print_extra_script( $handle, false );
$this->concat .= "$handle,";
$this->concat_version .= "$handle$ver";
@@ -195,7 +212,7 @@ class WP_Scripts extends WP_Dependencies {
if ( ! $src )
return true;
$tag = "{$cond_before}<script type='text/javascript' src='$src'></script>\n{$cond_after}";
$tag = "{$cond_before}{$before_handle}<script type='text/javascript' src='$src'></script>\n{$after_handle}{$cond_after}";
/**
* Filter the HTML script tag of an enqueued script.
@@ -209,7 +226,11 @@ class WP_Scripts extends WP_Dependencies {
$tag = apply_filters( 'script_loader_tag', $tag, $handle, $src );
if ( $this->do_concat ) {
$this->print_html .= $tag;
if ( $after_handle ) {
$this->print_html_before .= $tag;
} else {
$this->print_html .= $tag;
}
} else {
echo $tag;
}
@@ -217,6 +238,61 @@ class WP_Scripts extends WP_Dependencies {
return true;
}
/**
* Add extra code to a registered script.
*
* @since 4.5.0
*
* @param string $handle Name of the script to add the inline script to. Must be lowercase.
* @param string $data String containing the javascript to be added.
* @param string $position Optional. Whether to add the inline script before the handle
* or after. Default 'after'.
*
* @return bool True on success, false on failure.
*/
public function add_inline_script( $handle, $data, $position = 'after' ) {
if ( ! $data ) {
return false;
}
if ( 'after' !== $position ) {
$position = 'before';
}
$script = (array) $this->get_data( $handle, $position );
$script[] = $data;
return $this->add_data( $handle, $position, $script );
}
/**
* Print inline scripts registered for a specific handle.
*
* @since 4.5.0
*
* @param string $handle Name of the script to add the inline script to. Must be lowercase.
* @param string $position Optional. Whether to add the inline script before the handle
* or after. Default 'after'.
* @param bool $echo Optional. Whether to echo the script instead of just returning it.
* Default true.
* @return string|false Script on success, false otherwise.
*/
public function print_inline_script( $handle, $position = 'after', $echo = true ) {
$output = $this->get_data( $handle, $position );
if ( empty( $output ) ) {
return false;
}
$output = trim( implode( "\n", $output ), "\n" );
if ( $echo ) {
printf( "<script type='text/javascript'>\n%s\n</script>\n", $output );
}
return $output;
}
/**
* Localizes a script, only if the script has already been added
*
@@ -339,6 +415,7 @@ class WP_Scripts extends WP_Dependencies {
$this->concat = '';
$this->concat_version = '';
$this->print_html = '';
$this->print_html_before = '';
$this->ext_version = '';
$this->ext_handles = '';
}