fix redirect loop initiated eg. by saving a mail, caused by document.location=url triggering etemplate unload handler and destroying et2 request, identical redirect url detected by jdots framework causes refresh via nextmatch --> next redirect

etemplate/inc/class.etemplate_request.inc.php

@@ -177,6 +177,8 @@ class etemplate_request
 			list($app) = explode('.', $_GET['menuaction']);
 			$index_url = isset($GLOBALS['egw_info']['apps'][$app]['index']) ?
 				'/index.php?menuaction='.$GLOBALS['egw_info']['apps'][$app]['index'] : '/'.$app.'/index.php';
+			// add a unique token to redirect to avoid client-side framework tries refreshing via nextmatch
+			$index_url .= (strpos($index_url, '?') ? '&' : '?').'redirect='.microtime(true);
 			error_log(__METHOD__."('$id', ...) eT2 request not found / expired --> redirecting app $app to $index_url (_GET[menuaction]=$_GET[menuaction], isJSONRequest()=".array2string(egw_json_request::isJSONRequest()).')');
 			if (egw_json_request::isJSONRequest())
 			{

etemplate/js/et2_extension_nextmatch.js

@@ -303,10 +303,14 @@ var et2_nextmatch = et2_DOMWidget.extend([et2_IResizeable, et2_IInput],
 	 * Implements the et2_IResizeable interface - lets the dynheight manager
 	 * update the width and height and then update the dataview container.
 	 */
-	resize: function() {
+	resize: function()
+	{
+		if (this.dynheight)
+		{
 			this.dynheight.update(function(_w, _h) {
 				this.dataview.resize(_w, _h);
 			}, this);
+		}
 	},
 
 	/**

etemplate/js/etemplate2.js

@@ -246,6 +246,22 @@ etemplate2.prototype.unbind_unload = function()
 	delete this.destroy_session;
 };
 
+/**
+ * Download a URL not triggering our unload handler and therefore destroying our et2 request
+ *
+ * @param {string} _url
+ */
+etemplate2.prototype.download = function(_url)
+{
+	// need to unbind unload handler to NOT destroy et2 session
+	this.unbind_unload();
+
+	document.location = _url;
+
+	// bind unload handler again (can NOT do it direct, as this would be quick enough to be still triggered!)
+	window.setTimeout(jQuery.proxy(this.bind_unload, this), 100);
+};
+
 /**
  * Loads the template from the given URL and sets the data object
  *

mail/js/app.js

@@ -2174,7 +2174,7 @@ app.classes.mail = AppJS.extend(
 		url += 'menuaction=mail.mail_ui.saveMessage';	// todo compose for Draft folder
 		url += '&id='+_elems[0].id;
 		//window.open(url,'_blank','dependent=yes,width=100,height=100,scrollbars=yes,status=yes');
-		document.location = url;
+		this.et2._inst.download(url);
 	},
 
 	/**
@@ -2310,8 +2310,7 @@ app.classes.mail = AppJS.extend(
 				windowName = windowName+'displayAttachment_'+mailid+'_'+attgrid.partID;
 				width = 870;
 				height = 600;
-				//document.location = url;
+				break;
-				//return;
 		}
 		egw_openWindowCentered(url,windowName,width,height);
 	},
@@ -2418,8 +2417,7 @@ app.classes.mail = AppJS.extend(
 				windowName = windowName+'displayAttachment_'+attgrid.file.replace(/\//g,"_");
 				width = 870;
 				height = 600;
-				//document.location = url;
+				break;
-				//return;
 		}
 		egw_openWindowCentered(url,windowName,width,height);
 	},
@@ -2441,15 +2439,12 @@ app.classes.mail = AppJS.extend(
 			attgrid = this.et2.getArrayMgr("content").getEntry('mail_displayattachments')[widget.id.replace(/\[save\]/,'')];
 		}
 		var url = window.egw_webserverUrl+'/index.php?';
-		var width;
-		var height;
-		var windowName ='mail';
 		url += 'menuaction=mail.mail_ui.getAttachment';	// todo compose for Draft folder
 		url += '&mode=save';
 		url += '&id='+mailid;
 		url += '&part='+attgrid.partID;
 		url += '&is_winmail='+attgrid.winmailFlag;
-		document.location = url;
+		this.et2._inst.download(url);
 	},
 
 	saveAllAttachmentsToZip: function(tag_info, widget)
@@ -2469,13 +2464,10 @@ app.classes.mail = AppJS.extend(
 			attgrid = this.et2.getArrayMgr("content").getEntry('mail_displayattachments')[widget.id.replace(/\[save\]/,'')];
 		}
 		var url = window.egw_webserverUrl+'/index.php?';
-		var width;
-		var height;
-		var windowName ='mail';
 		url += 'menuaction=mail.mail_ui.download_zip';	// todo compose for Draft folder
 		url += '&mode=save';
 		url += '&id='+mailid;
-		document.location = url;
+		this.et2._inst.download(url);
 	},
 
 	saveAttachmentToVFS: function(tag_info, widget)
@@ -2573,8 +2565,6 @@ app.classes.mail = AppJS.extend(
 		url += '&method=mail.mail_ui.vfsSaveMessage';
 		url += '&id='+_elems[0].id;
 		url += '&label=Save';
-		//window.open(url,'_blank','dependent=yes,width=100,height=100,scrollbars=yes,status=yes')
-		//document.location = url;
 		egw_openWindowCentered(url,'vfs_save_message_'+_elems[0].id,'640','570',window.outerWidth/2,window.outerHeight/2);
 
 	},