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<?php
/**
* BackPress Scripts enqueue.
*
* These classes were refactored from the WordPress WP_Scripts and WordPress
* script enqueue API.
*
* @package BackPress
* @since r16
*/
/**
* BackPress Scripts enqueue class.
*
* @package BackPress
* @uses WP_Dependencies
* @since r16
*/
class WP_Scripts extends WP_Dependencies {
var $base_url; // Full URL with trailing slash
var $content_url;
var $default_version;
var $in_footer = array();
var $concat = '';
var $concat_version = '';
var $do_concat = false;
var $print_html = '';
var $print_code = '';
var $ext_handles = '';
var $ext_version = '';
var $default_dirs;
function __construct() {
$this->init();
add_action( 'init', array( $this, 'init' ), 0 );
}
function init() {
do_action_ref_array( 'wp_default_scripts', array(&$this) );
}
/**
* Prints scripts
*
* Prints the scripts passed to it or the print queue. Also prints all necessary dependencies.
*
* @param mixed $handles (optional) Scripts to be printed. (void) prints queue, (string) prints that script, (array of strings) prints those scripts.
* @param int $group (optional) If scripts were queued in groups prints this group number.
* @return array Scripts that have been printed
*/
function print_scripts( $handles = false, $group = false ) {
return $this->do_items( $handles, $group );
}
// Deprecated since 3.3, see print_extra_script()
function print_scripts_l10n( $handle, $echo = true ) {
_deprecated_function( __FUNCTION__, '3.3', 'print_extra_script()' );
return $this->print_extra_script( $handle, $echo );
}
function print_extra_script( $handle, $echo = true ) {
if ( !$output = $this->get_data( $handle, 'data' ) )
return;
if ( !$echo )
return $output;
echo "<script type='text/javascript'>\n"; // CDATA and type='text/javascript' is not needed for HTML 5
echo "/* <![CDATA[ */\n";
echo "$output\n";
echo "/* ]]> */\n";
echo "</script>\n";
return true;
}
function do_item( $handle, $group = false ) {
if ( !parent::do_item($handle) )
return false;
if ( 0 === $group && $this->groups[$handle] > 0 ) {
$this->in_footer[] = $handle;
return false;
}
if ( false === $group && in_array($handle, $this->in_footer, true) )
$this->in_footer = array_diff( $this->in_footer, (array) $handle );
if ( null === $this->registered[$handle]->ver )
$ver = '';
else
$ver = $this->registered[$handle]->ver ? $this->registered[$handle]->ver : $this->default_version;
if ( isset($this->args[$handle]) )
$ver = $ver ? $ver . '&' . $this->args[$handle] : $this->args[$handle];
$src = $this->registered[$handle]->src;
if ( $this->do_concat ) {
$srce = apply_filters( 'script_loader_src', $src, $handle );
if ( $this->in_default_dir($srce) ) {
$this->print_code .= $this->print_extra_script( $handle, false );
$this->concat .= "$handle,";
$this->concat_version .= "$handle$ver";
return true;
} else {
$this->ext_handles .= "$handle,";
$this->ext_version .= "$handle$ver";
}
}
$this->print_extra_script( $handle );
if ( !preg_match('|^(https?:)?//|', $src) && ! ( $this->content_url && 0 === strpos($src, $this->content_url) ) ) {
$src = $this->base_url . $src;
}
if ( !empty($ver) )
$src = add_query_arg('ver', $ver, $src);
$src = esc_url( apply_filters( 'script_loader_src', $src, $handle ) );
if ( $this->do_concat )
$this->print_html .= "<script type='text/javascript' src='$src'></script>\n";
else
echo "<script type='text/javascript' src='$src'></script>\n";
return true;
}
/**
* Localizes a script
*
* Localizes only if the script has already been added
*/
function localize( $handle, $object_name, $l10n ) {
if ( is_array($l10n) && isset($l10n['l10n_print_after']) ) { // back compat, preserve the code in 'l10n_print_after' if present
$after = $l10n['l10n_print_after'];
unset($l10n['l10n_print_after']);
}
foreach ( (array) $l10n as $key => $value ) {
if ( !is_scalar($value) )
continue;
$l10n[$key] = html_entity_decode( (string) $value, ENT_QUOTES, 'UTF-8');
}
$script = "var $object_name = " . json_encode($l10n) . ';';
if ( !empty($after) )
$script .= "\n$after;";
$data = $this->get_data( $handle, 'data' );
if ( !empty( $data ) )
$script = "$data\n$script";
return $this->add_data( $handle, 'data', $script );
}
function set_group( $handle, $recursion, $group = false ) {
if ( $this->registered[$handle]->args === 1 )
$grp = 1;
else
$grp = (int) $this->get_data( $handle, 'group' );
if ( false !== $group && $grp > $group )
$grp = $group;
return parent::set_group( $handle, $recursion, $grp );
}
function all_deps( $handles, $recursion = false, $group = false ) {
$r = parent::all_deps( $handles, $recursion );
if ( !$recursion )
$this->to_do = apply_filters( 'print_scripts_array', $this->to_do );
return $r;
}
function do_head_items() {
$this->do_items(false, 0);
return $this->done;
}
function do_footer_items() {
$this->do_items(false, 1);
return $this->done;
}
function in_default_dir($src) {
if ( ! $this->default_dirs )
return true;
if ( 0 === strpos( $src, '/wp-includes/js/l10n' ) )
return false;
foreach ( (array) $this->default_dirs as $test ) {
if ( 0 === strpos($src, $test) )
return true;
}
return false;
}
function reset() {
$this->do_concat = false;
$this->print_code = '';
$this->concat = '';
$this->concat_version = '';
$this->print_html = '';
$this->ext_version = '';
$this->ext_handles = '';
}
}
