X-Git-Url: https://delta.frontaccounting.com/gitweb/?a=blobdiff_plain;f=sales%2Fincludes%2Fsales_ui.inc;h=8e2048cf21eb69d608da3b6c73d7b05c360c3b70;hb=2f85dd59adb080270e39d0e52edc8af9a60175b1;hp=a8abacab896ac79f81c51e770ccfeebcf4578bd3;hpb=da8311619dd73feae101d246a1957b972e00cbd2;p=fa-stable.git

diff --git a/sales/includes/sales_ui.inc b/sales/includes/sales_ui.inc
index a8abacab..8e2048cf 100644
--- a/sales/includes/sales_ui.inc
+++ b/sales/includes/sales_ui.inc
@@ -1,8 +1,56 @@
 <?php
-
+/**********************************************************************
+    Copyright (C) FrontAccounting, LLC.
+	Released under the terms of the GNU General Public License, GPL, 
+	as published by the Free Software Foundation, either version 3 
+	of the License, or (at your option) any later version.
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  
+    See the License here <http://www.gnu.org/licenses/gpl-3.0.html>.
+***********************************************************************/
 include_once($path_to_root . "/includes/date_functions.inc");
 
 include_once($path_to_root . "/includes/ui.inc");
 include_once($path_to_root . "/includes/banking.inc");
 
+//----------------------------------------------------------------------------
+// helper functions for script execution control
+//
+function processing_start()
+{
+	page_processing(false);
+    processing_end();
+    $_SESSION['Processing'] = $_SERVER['PHP_SELF'];
+}
+
+function processing_end()
+{
+	page_processing(true);
+    unset($_SESSION['Processing']);
+    if ( isset($_SESSION['Items']) ) {
+		unset($_SESSION['Items']->line_items);
+		unset($_SESSION['Items']);
+    }
+}
+
+function processing_active()
+{
+    return (isset($_SESSION['Processing']) && $_SESSION['Processing']==$_SERVER['PHP_SELF']);
+}
+/*
+	Check if the cart was not destroyed during opening the edition page in
+	another browser tab.
+*/
+function check_edit_conflicts($cartname='Items')
+{
+	global $Ajax;
+	
+	if (isset($_POST['cart_id']) && $_POST['cart_id'] != $_SESSION[$cartname]->cart_id) {
+		display_error(_('This edit session has been abandoned by opening sales document in another browser tab. You cannot edit more than one sales document at once.'));
+		$Ajax->activate('_page_body');
+		display_footer_exit();
+	}
+}
+
 ?>
\ No newline at end of file