I have been playing around with the new CellBrowser/CellTree Widgets of GWT 2.1RC. However I ran into a weird problem. I am not sure if that's a bug or maybe a mistake on my side.
Basically I was followed this tutorial http://gwt.google.com/samples/Showcase/Showcase.html#!CwCellBrowser I created a TreeViewModel and defined the required cells for all levels of the tree/browser respectively (in my case there are 3 levels) I pass a List of my DTOs into the constructor of my CustomTreeViewModel Class. In the constructor I create a ListDataProvider with the List of my DTO objects. At this step everything works just fine. The CellBrowser is populated with the first level and when I click of one entries the next level is shown. As a next step I created a button which should reload the CellBrowser with new data (actually it's the same data). I did this by calling setList(List<c>) on my ListDataAdapter in my CustomTreeViewModel. The CellBrowser is reloaded with the new data and again only the root node/ elements are shown. Here I get a weird problem. If I previously opened an additional level of the CellBrowser (apart from the root level) and I reload the data so that again only the root node/elements are shown and I click on one of the root node elements to expand/display the second level I get following uncaught Exception: 14:00:51.322 [ERROR] [gwasclient] Uncaught exception escaped java.lang.IndexOutOfBoundsException: Index: 1, Size: 1 at java.util.ArrayList.RangeCheck(ArrayList.java:547) at java.util.ArrayList.get(ArrayList.java:322) at com.google.gwt.user.cellview.client.CellBrowser.setChildState(CellBrowser.java: 1027) at com.google.gwt.user.cellview.client.CellBrowser.setChildState(CellBrowser.java: 990) at com.google.gwt.user.cellview.client.CellBrowser.access $7(CellBrowser.java:972) at com.google.gwt.user.cellview.client.CellBrowser $BrowserCellList.doKeyboardSelection(CellBrowser.java:325) at com.google.gwt.user.cellview.client.CellList.onBrowserEvent2(CellList.java: 389) at com.google.gwt.user.cellview.client.CellBrowser $BrowserCellList.onBrowserEvent2(CellBrowser.java:231) at com.google.gwt.user.cellview.client.AbstractHasData.onBrowserEvent(AbstractHasData.java: 454) at com.google.gwt.user.client.DOM.dispatchEventImpl(DOM.java:1308) This happens in the setChildState function of the CellBrowser where nodes get closed and opened. It seems that the when the new Data is set and the CellBrowser get redrawn it forgets to reset the nodes which are shown or hidden and when it tries to reset the collapse/open status of these nodes it throws this exception. So i am not sure if this is a bug or I choose the wrong approach to reload the data of the CellBrowser Maybe somebody has an idea what might be the problem here Uemit -- You received this message because you are subscribed to the Google Groups "Google Web Toolkit" group. To post to this group, send email to google-web-tool...@googlegroups.com. To unsubscribe from this group, send email to google-web-toolkit+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-web-toolkit?hl=en.
