Ticket #13829: menu_page_url.diff

wp-admin/includes/plugin.php

@@ -817 +817 @@
  * @param int $position The position in the menu order this one should appear
  */
 function add_menu_page( $page_title, $menu_title, $capability, $menu_slug, $function = '', $icon_url = '', $position = NULL ) {
-        global $menu, $admin_page_hooks, $_registered_pages;
+        global $menu, $admin_page_hooks, $_registered_pages, $_parent_pages;
 
         $menu_slug = plugin_basename( $menu_slug );
 
@@ -842 +842 @@
 
         $_registered_pages[$hookname] = true;
 
+        // No parent as top level
+        $_parent_pages[$menu_slug] = false;
+        
         return $hookname;
 }
 
@@ -915 +918 @@
         global $_wp_real_parent_file;
         global $_wp_submenu_nopriv;
         global $_registered_pages;
+        global $_parent_pages;
 
         $menu_slug = plugin_basename( $menu_slug );
         $parent_slug = plugin_basename( $parent_slug);
@@ -949 +953 @@
         if ( 'tools.php' == $parent_slug )
                 $_registered_pages[get_plugin_page_hookname( $menu_slug, 'edit.php')] = true;
 
+        // No parent as top level
+        $_parent_pages[$menu_slug] = $parent_slug;
+                
         return $hookname;
 }
 
@@ -1164 +1171 @@
         return add_submenu_page( 'edit-comments.php', $page_title, $menu_title, $capability, $menu_slug, $function );
 }
 
+/**
+ * Get the url to access a particular menu page based on the slug it was registered with.
+ * 
+ * If the slug hasn't been registered properly no url will be returned
+ * 
+ * @since 3.0
+ * 
+ * @param string $menu_slug The slug name to refer to this menu by (should be unique for this menu)
+ * @param bool $echo Whether or not to echo the url - default is true
+ * @return string the url
+ */
+function menu_page_url($menu_slug, $echo = true) {
+        global $_parent_pages;
+                
+        if ( isset( $_parent_pages[$menu_slug] ) ) {
+                if ( $_parent_pages[$menu_slug] ) {
+                        $url = admin_url($_parent_pages[$menu_slug] . '?page=' . $menu_slug);
+                } else {
+                        $url = admin_url('admin.php?page=' . $menu_slug);
+                }
+        } else {
+                $url = '';
+        }
+        
+        $url = esc_url($url);
+        
+        if ( $echo )
+                echo $url;
+        
+        return $url;
+}
+
 //
 // Pluggable Menu Support -- Private
 //