Yes this has already come up on the mailing list. This was always illegal, just uncaught prior to 1.6. You cannot wrap two elements in GWT if they already have a parent/child relationship in the DOM (causes a mismatch in the trees).
Do a search & you'll find the response from the GWT developer regarding this issue. On Mon, Apr 27, 2009 at 11:12 AM, kohlyn <[email protected]> wrote: > > > I'm getting the following errors with 1.6.4 on a Mac. > > "A widget that has an existing parent widget may not be added to the > detach list" > > The HTML is: > > <body> > <!-- OPTIONAL: include this if you want history support --> > <iframe src="javascript:''" id="__gwt_historyFrame" tabIndex='-1' > style="position:absolute;width:0;height:0;border:0"></iframe> > <h1>Web Application Starter Project</h1> > <div id="testdiv"></div> > </body> > > Code: > > public void onModuleLoad() { > > HTMLPanel p = new HTMLPanel("<div id=\"testdiv2\">Test Div > 2</ > div>"); > > RootPanel.get("testdiv").add(p); > > final TextBox txtUsername = new TextBox(); > > RootPanel.get("testdiv2").add(txtUsername); > > } > } > > > This code worked in the 1.4 and 1.5 branches, but not 1.6. > > The line: > > "RootPanel.get("testdiv2").add(txtUsername);" > > throws the exception. > "A widget that has an existing parent widget may not be added to > the detach list" > > The problems appears to be with a new check in > RootPanel.detachOnWindowClose(Widget widget) > > assert !isElementChildOfWidget(widget.getElement()) : "A widget > that has " > + "an existing parent widget may not be added to the detach > list"; > > RootPanel.isElementChildOfWidget(Element element) appears to fail > because I'm adding a widget to an already attached element. > > Any work arounds/ideas would be greatly appreciated ... I have a 1.4 > application that is based on dynamically loading page layouts from a > database. > > Thanks. > > > > --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Google Web Toolkit" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/Google-Web-Toolkit?hl=en -~----------~----~----~----~------~----~------~--~---
