<?php
namespace W3TC;
/**
* Attaches to wp actions related to content change, which should fire
* flushes of html content
*/
class Util_AttachToActions {
static function flush_posts_on_actions() {
static $attached = false;
if ( $attached )
return;
$attached = true;
$o = new Util_AttachToActions();
add_action( 'clean_post_cache', array(
$o,
'on_post_change'
), 0, 2 );
// when post status is changed to draft - it looses its URL
// so we need to flush before update is happened
add_action( 'pre_post_update', array(
$o,
'on_post_change'
), 0 );
add_action( 'wp_trash_post', array(
$o,
'on_post_change'
), 0 );
add_action( 'publish_post', array(
$o,
'on_post_change'
), 0, 2 );
add_action( 'switch_theme', array(
$o,
'on_change'
), 0 );
add_action( 'wp_update_nav_menu', array(
$o,
'on_change'
), 0 );
add_action( 'edit_user_profile_update', array(
$o,
'on_change'
), 0 );
if ( Util_Environment::is_wpmu() ) {
add_action( 'delete_blog', array(
$o,
'on_change'
), 0 );
}
add_action( 'edited_term', array(
$o,
'on_change'
), 0 );
}
/**
* Post changed action
*
* @param integer $post_id
* @param null $post
* @return void
*/
function on_post_change( $post_id, $post = null ) {
if ( is_null( $post ) )
$post = get_post( $post_id );
// if attachment changed - parent post has to be flushed
// since there are usually attachments content like title
// on the page (gallery)
if ( $post->post_type == 'attachment' ) {
$post_id = $post->post_parent;
$post = get_post( $post_id );
}
if ( !Util_Environment::is_flushable_post( $post, 'posts',
Dispatcher::config() ) )
return;
$cacheflush = Dispatcher::component( 'CacheFlush' );
$cacheflush->flush_post( $post_id );
}
/**
* Change action
*/
function on_change() {
$cacheFlush = Dispatcher::component( 'CacheFlush' );
$cacheFlush->flush_posts();
}
}