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Hook documentation for wp-admin/admin.php. 

props DrewAPicture for initial patch.
fixes #25442.

Built from https://develop.svn.wordpress.org/trunk@25747


git-svn-id: http://core.svn.wordpress.org/trunk@25660 1a063a9b-81f0-0310-95a4-ce76da25c4cd
This commit is contained in:
Andrew Nacin 2013-10-09 21:01:09 +00:00
parent f5eb32ec6b
commit 34da946343
1 changed files with 134 additions and 17 deletions
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147
wp-admin/admin.php
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@ -36,27 +36,43 @@ if ( get_option('db_upgraded') ) {
update_option( 'db_upgraded', false );
/**
* Runs on the next page load after successful upgrade
* Fires on the next page load after a successful DB upgrade.
*
* @since 2.8
* @since 2.8.0
*/
do_action('after_db_upgrade');
do_action( 'after_db_upgrade' );
} elseif ( get_option('db_version') != $wp_db_version && empty($_POST) ) {
if ( !is_multisite() ) {
wp_redirect( admin_url( 'upgrade.php?_wp_http_referer=' . urlencode( wp_unslash( $_SERVER['REQUEST_URI'] ) ) ) );
exit;
} elseif ( apply_filters( 'do_mu_upgrade', true ) ) {
/**
* On really small MU installs run the upgrader every time,
* else run it less often to reduce load.
* Filter whether to attempt to perform the multisite DB upgrade routine.
*
* @since 2.8.4b
* In single site, the user would be redirected to wp-admin/upgrade.php.
* In multisite, it is automatically fired, but only when this filter
* returns true.
*
* If the network is 50 sites or less, it will run every time. Otherwise,
* it will throttle itself to reduce load.
*
* @since 3.0.0
*
* @param bool true Whether to perform the Multisite upgrade routine. Default true.
*/
} elseif ( apply_filters( 'do_mu_upgrade', true ) ) {
$c = get_blog_count();
// If 50 or fewer sites, run every time. Else, run "about ten percent" of the time. Shh, don't check that math.
if ( $c <= 50 || ( $c > 50 && mt_rand( 0, (int)( $c / 50 ) ) == 1 ) ) {
require_once( ABSPATH . WPINC . '/http.php' );
$response = wp_remote_get( admin_url( 'upgrade.php?step=1' ), array( 'timeout' => 120, 'httpversion' => '1.1' ) );
/**
* Fires after the multisite DB upgrade is complete.
*
* @since 3.0.0
*
* @param array|WP_Error $response The upgrade response array or WP_Error on failure.
*/
do_action( 'after_mu_upgrade', $response );
unset($response);
}
@ -103,10 +119,35 @@ elseif ( WP_USER_ADMIN )
else
require(ABSPATH . 'wp-admin/menu.php');
if ( current_user_can( 'manage_options' ) )
if ( current_user_can( 'manage_options' ) ) {
/**
* Filter the maximum memory limit available for administration screens.
*
* This only applies to administrators, who may require more memory for tasks like updates.
* Memory limits when processing images (uploaded or edited by users of any role) are
* handled separately.
*
* The WP_MAX_MEMORY_LIMIT constant specifically defines the maximum memory limit available
* when in the administration back-end. The default is 256M, or 256 megabytes of memory.
*
* @since 3.0.0
*
* @param string 'WP_MAX_MEMORY_LIMIT' The maximum WordPress memory limit. Default 256M.
*/
@ini_set( 'memory_limit', apply_filters( 'admin_memory_limit', WP_MAX_MEMORY_LIMIT ) );
}
do_action('admin_init');
/**
* Fires as an admin screen or script is being initialized.
*
* Note, this does not just run on user-facing admin screens.
* It runs on admin-ajax.php and admin-post.php as well.
*
* This is roughly analgous to the more general 'init' hook, which fires earlier.
*
* @since 2.5.0
*/
do_action( 'admin_init' );
if ( isset($plugin_page) ) {
if ( !empty($typenow) )
@ -142,11 +183,38 @@ set_current_screen();
// Handle plugin admin pages.
if ( isset($plugin_page) ) {
if ( $page_hook ) {
do_action('load-' . $page_hook);
/**
* Fires before a particular screen is loaded.
*
* The load-* hook fires in a number of contexts. This hook is for plugin screens
* where a callback is provided when the screen is registered.
*
* The dynamic portion of the hook name, $page_hook, refers to a mixture of plugin
* page information including:
* 1. The page type. If the plugin page is registered as a submenu page, such as for
* Settings, the page type would be 'settings'. Otherwise the type is 'toplevel'.
* 2. A separator of '_page_'.
* 3. The plugin basename minus the file extension.
*
* Together, the three parts form the $page_hook. Citing the example above,
* the hook name used would be 'load-settings_page_pluginbasename'.
*
* @see get_plugin_page_hook()
*
* @since 2.1.0
*/
do_action( 'load-' . $page_hook );
if (! isset($_GET['noheader']))
require_once(ABSPATH . 'wp-admin/admin-header.php');
do_action($page_hook);
/**
* Used to call the registered callback for a plugin screen.
*
* @access private
*
* @since 1.5.0
*/
do_action( $page_hook );
} else {
if ( validate_file($plugin_page) )
wp_die(__('Invalid plugin page'));
@ -154,7 +222,19 @@ if ( isset($plugin_page) ) {
if ( !( file_exists(WP_PLUGIN_DIR . "/$plugin_page") && is_file(WP_PLUGIN_DIR . "/$plugin_page") ) && !( file_exists(WPMU_PLUGIN_DIR . "/$plugin_page") && is_file(WPMU_PLUGIN_DIR . "/$plugin_page") ) )
wp_die(sprintf(__('Cannot load %s.'), htmlentities($plugin_page)));
do_action('load-' . $plugin_page);
/**
* Fires before a particular screen is loaded.
*
* The load-* hook fires in a number of contexts. This hook is for plugin screens
* where the file to load is directly included, rather than the use of a function.
*
* The dynamic portion of the hook name, $plugin_page, refers to the plugin basename.
*
* @see plugin_basename()
*
* @since 1.5.0
*/
do_action( 'load-' . $plugin_page );
if ( !isset($_GET['noheader']))
require_once(ABSPATH . 'wp-admin/admin-header.php');
@ -185,6 +265,13 @@ if ( isset($plugin_page) ) {
exit;
}
/**
* Fires before an importer screen is loaded.
*
* The dynamic portion of the hook name, $importer, refers to the importer slug.
*
* @since 3.5.0
*/
do_action( 'load-importer-' . $importer );
$parent_file = 'tools.php';
@ -198,6 +285,16 @@ if ( isset($plugin_page) ) {
define('WP_IMPORTING', true);
/**
* Whether to filter imported data through kses on import.
*
* Multisite uses this hook to filter all data through kses by default,
* as a super administrator may be assisting an untrusted user.
*
* @since 3.1.0
*
* @param bool false Whether to force data to be filtered through kses. Default false.
*/
if ( apply_filters( 'force_filtered_html_on_import', false ) )
kses_init_filters(); // Always filter imported data with kses on multisite.
@ -210,7 +307,18 @@ if ( isset($plugin_page) ) {
exit();
} else {
do_action("load-$pagenow");
/**
* Fires before a particular screen is loaded.
*
* The load-* hook fires in a number of contexts. This hook is for core screens.
*
* The dynamic portion of the hook name, $pagenow, is a global variable
* referring to the filename of the current page, such as 'admin.php',
* 'post-new.php' etc. A complete hook for the latter would be 'load-post-new.php'.
*
* @since 2.1.0
*/
do_action( 'load-' . $pagenow );
// Backwards compatibility with old load-page-new.php, load-page.php,
// and load-categories.php actions.
if ( $typenow == 'page' ) {
@ -226,5 +334,14 @@ if ( isset($plugin_page) ) {
}
}
if ( !empty($_REQUEST['action']) )
do_action('admin_action_' . $_REQUEST['action']);
if ( ! empty( $_REQUEST['action'] ) ) {
/**
* Fires when an 'action' request variable is sent.
*
* The dynamic portion of the hook name, $_REQUEST['action'],
* refers to the action derived from the GET or POST request.
*
* @since 2.6.0
*/
do_action( 'admin_action_' . $_REQUEST['action'] );
}