[jira] Commented: (MYFACES-1691) beforeUnload event handler breaks form submission

[Michael . Mesiti]

Here is an interim solution using javascript. 

As written, it requires the "prototype" framework 
(http://www.prototypejs.org/), but can be re-written to work without it.


        //
        // submitting/leaving this screen (beforeUnload event)
        //
        function changesWillBeLostWarningHandler(e) {
        e.returnValue = "If you have not saved your changes, they will be 
lost.";
                return false;
        }
        Event.observe(window, 'load', function() {
                Event.observe(window, 'beforeunload', 
changesWillBeLostWarningHandler);
        });
        Event.observe(window, 'load', function() {
                // bug patch to myFaces JSF where beforeunload doesn't 
work correctly with oamSubmitForm method
                if(oamSubmitForm !== undefined && oamSubmitForm instanceof 
Function) {
                        // retain original version of the oamSubmitForm 
function
                        originalOamSubmitForm = oamSubmitForm;

                        // wrap the original version of the oamSubmitForm 
function with a try catch block
                        oamSubmitForm = function() {
                                try {
                                        // calling oamSubmitForm(formName, 
linkId, target, params)
                                        originalOamSubmitForm.apply(this, 
arguments);
                                } catch(e) { 
                                        // ignore exception when CANCEL 
button is clicked
                                }
                        }
                }
        });