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Dependencies: Improve group processing of script dependencies. 

This is a follow-up to [36604].

When processing dependencies `$this->group` will be the minimum of the script's registered group and all preceding siblings. This is wrong because only a scripts ancestors in the dependency chain should affect where it is loaded. Effectively `$this->group` introduced a form of global state which potentially corrupted the group of dependencies. Sorting covers up this problem.
The issue in #35873 was that script were not moving their dependencies to a lower group when necessary.

The fix:
* In `WP_Dependencies::all_deps()` pass the new `$group` value to `WP_Dependencies::all_deps()`. Previously the wrong value was passed because the parent script could have moved with `WP_Scripts::set_group()`.
* In `WP_Scripts::all_deps()` pass the `$group` parameter to `WP_Dependencies::all_deps()` so it doesn't always use `false` for `$group`. Same for `WP_Styles::all_deps()`.

Props stephenharris, gitlost.
Fixes #35956.

git-svn-id: https://develop.svn.wordpress.org/trunk@36871 602fd350-edb4-49c9-b593-d223f7449a82
This commit is contained in:
Dominik Schilling (ocean90) 2016-03-06 19:49:54 +00:00
parent 92bdac8474
commit 00e87b40c8
4 changed files with 68 additions and 18 deletions
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14
src/wp-includes/class.wp-dependencies.php
View File

@ -77,6 +77,7 @@ class WP_Dependencies {
*
* @access public
* @since 2.8.0
* @deprecated 4.5.0
* @var int
*/
public $group = 0;
@ -162,6 +163,7 @@ class WP_Dependencies {
continue;
$moved = $this->set_group( $handle, $recursion, $group );
$new_group = $this->groups[ $handle ];
if ( $queued && !$moved ) // already queued and in the right group
continue;
@ -171,7 +173,7 @@ class WP_Dependencies {
$keep_going = false; // Item doesn't exist.
elseif ( $this->registered[$handle]->deps && array_diff($this->registered[$handle]->deps, array_keys($this->registered)) )
$keep_going = false; // Item requires dependencies that don't exist.
elseif ( $this->registered[$handle]->deps && !$this->all_deps( $this->registered[$handle]->deps, true, $group ) )
elseif ( $this->registered[$handle]->deps && !$this->all_deps( $this->registered[$handle]->deps, true, $new_group ) )
$keep_going = false; // Item requires dependencies that don't exist.
if ( ! $keep_going ) { // Either item or its dependencies don't exist.
@ -397,16 +399,12 @@ class WP_Dependencies {
public function set_group( $handle, $recursion, $group ) {
$group = (int) $group;
if ( $recursion ) {
$group = min( $this->group, $group );
if ( isset( $this->groups[ $handle ] ) && $this->groups[ $handle ] <= $group ) {
return false;
}
$this->group = $group;
if ( isset($this->groups[$handle]) && $this->groups[$handle] <= $group )
return false;
$this->groups[ $handle ] = $group;
return true;
}

2
src/wp-includes/class.wp-scripts.php
View File

@ -509,7 +509,7 @@ class WP_Scripts extends WP_Dependencies {
* @return bool True on success, false on failure.
*/
public function all_deps( $handles, $recursion = false, $group = false ) {
$r = parent::all_deps( $handles, $recursion );
$r = parent::all_deps( $handles, $recursion, $group );
if ( ! $recursion ) {
/**
* Filter the list of script dependencies left to print.

2
src/wp-includes/class.wp-styles.php
View File

@ -310,7 +310,7 @@ class WP_Styles extends WP_Dependencies {
* @return bool True on success, false on failure.
*/
public function all_deps( $handles, $recursion = false, $group = false ) {
$r = parent::all_deps( $handles, $recursion );
$r = parent::all_deps( $handles, $recursion, $group );
if ( ! $recursion ) {
/**
* Filter the array of enqueued styles before processing for output.

66
tests/phpunit/tests/dependencies/scripts.php
View File

@ -272,18 +272,70 @@ class Tests_Dependencies_Scripts extends WP_UnitTestCase {
* @ticket 35873
*/
function test_wp_register_script_with_dependencies_in_head_and_footer() {
wp_register_script( 'parent', '/parent.js', array( 'child' ), '1', true ); // in footer
wp_register_script( 'child', '/child.js', array( 'grandchild' ), '1', false ); // in head
wp_register_script( 'grandchild', '/grandchild.js', array(), '1', true ); // in footer
wp_register_script( 'parent', '/parent.js', array( 'child-head' ), null, true ); // in footer
wp_register_script( 'child-head', '/child-head.js', array( 'child-footer' ), null, false ); // in head
wp_register_script( 'child-footer', '/child-footer.js', array(), null, true ); // in footer
wp_enqueue_script( 'parent' );
$header = get_echo( 'wp_print_head_scripts' );
$footer = get_echo( 'wp_print_footer_scripts' );
$expected_header = "<script type='text/javascript' src='/grandchild.js?ver=1'></script>\n";
$expected_header .= "<script type='text/javascript' src='/child.js?ver=1'></script>\n";
$expected_footer = "<script type='text/javascript' src='/parent.js?ver=1'></script>\n";
$expected_header = "<script type='text/javascript' src='/child-footer.js'></script>\n";
$expected_header .= "<script type='text/javascript' src='/child-head.js'></script>\n";
$expected_footer = "<script type='text/javascript' src='/parent.js'></script>\n";
$this->assertEquals( $expected_header, $header );
$this->assertEquals( $expected_footer, $footer );
}
/**
* @ticket 35956
*/
function test_wp_register_script_with_dependencies_in_head_and_footer_in_reversed_order() {
wp_register_script( 'child-head', '/child-head.js', array(), null, false ); // in head
wp_register_script( 'child-footer', '/child-footer.js', array(), null, true ); // in footer
wp_register_script( 'parent', '/parent.js', array( 'child-head', 'child-footer' ), null, true ); // in footer
wp_enqueue_script( 'parent' );
$header = get_echo( 'wp_print_head_scripts' );
$footer = get_echo( 'wp_print_footer_scripts' );
$expected_header = "<script type='text/javascript' src='/child-head.js'></script>\n";
$expected_footer = "<script type='text/javascript' src='/child-footer.js'></script>\n";
$expected_footer .= "<script type='text/javascript' src='/parent.js'></script>\n";
$this->assertEquals( $expected_header, $header );
$this->assertEquals( $expected_footer, $footer );
}
/**
* @ticket 35956
*/
function test_wp_register_script_with_dependencies_in_head_and_footer_in_reversed_order_and_two_parent_scripts() {
wp_register_script( 'grandchild-head', '/grandchild-head.js', array(), null, false ); // in head
wp_register_script( 'child-head', '/child-head.js', array(), null, false ); // in head
wp_register_script( 'child-footer', '/child-footer.js', array( 'grandchild-head' ), null, true ); // in footer
wp_register_script( 'child2-head', '/child2-head.js', array(), null, false ); // in head
wp_register_script( 'child2-footer', '/child2-footer.js', array(), null, true ); // in footer
wp_register_script( 'parent-footer', '/parent-footer.js', array( 'child-head', 'child-footer', 'child2-head', 'child2-footer' ), null, true ); // in footer
wp_register_script( 'parent-header', '/parent-header.js', array( 'child-head' ), null, false ); // in head
wp_enqueue_script( 'parent-footer' );
wp_enqueue_script( 'parent-header' );
$header = get_echo( 'wp_print_head_scripts' );
$footer = get_echo( 'wp_print_footer_scripts' );
$expected_header = "<script type='text/javascript' src='/child-head.js'></script>\n";
$expected_header .= "<script type='text/javascript' src='/grandchild-head.js'></script>\n";
$expected_header .= "<script type='text/javascript' src='/child2-head.js'></script>\n";
$expected_header .= "<script type='text/javascript' src='/parent-header.js'></script>\n";
$expected_footer = "<script type='text/javascript' src='/child-footer.js'></script>\n";
$expected_footer .= "<script type='text/javascript' src='/child2-footer.js'></script>\n";
$expected_footer .= "<script type='text/javascript' src='/parent-footer.js'></script>\n";
$this->assertEquals( $expected_header, $header );
$this->assertEquals( $expected_footer, $footer );
@ -382,7 +434,7 @@ class Tests_Dependencies_Scripts extends WP_UnitTestCase {
}
/**
* @ticket 14853-2
* @ticket 14853
*/
public function test_wp_add_inline_script_before_with_concat() {
global $wp_scripts;