CellBrowser implements RequiresResize, so it needs an unbroken change of parents that all implement ProvidesResize, up to the RootLayoutPanel (not RootPanel). You can find more documentation about LayoutPanels in the dev guide: http://code.google.com/webtoolkit/doc/latest/DevGuideUiPanels.html#LayoutPanels
Alternatively, you can give the CellBrowser an explicit height and width. Thanks, John LaBanca [email protected] On Wed, Dec 1, 2010 at 8:34 AM, sevendays <[email protected]> wrote: > I am having trouble getting a CellBrowser component to display in my > existing GWT 2.1 project. I have tried both CellBrowserExample1.java > and CellBrowserExample2.java, by converting the entry point classes to > VerticalPanels, then adding them to my application. For example, this > is a modified > > http://google-web-toolkit.googlecode.com/svn/trunk/user/javadoc/com/google/gwt/examples/cellview/CellBrowserExample2.java > : > > public NodeCellBrowser() { > TreeViewModel model = new CustomTreeModel(); > > /* > * Create the browser using the model. We use <code>null</code> > as the > * default value of the root node. The default value will be > passed to > * CustomTreeModel#getNodeInfo(); > */ > CellBrowser browser = new CellBrowser(model, null); > > browser.setKeyboardSelectionPolicy(KeyboardSelectionPolicy.ENABLED); > > // Add the browser to the root layout panel. > this.add(new Label("This displays fine")); // <-- added by me to > test > this.add(browser); // nothing displays here > this.add(new Label("This also displays fine")); // <-- added by > me to test > } > > The symptoms of the problem are: > > 1) No CellBrowser displays; nothing appears on the screen (i.e. at > this.add(browser)), however the two test labels appear fine. > 2) No exceptions appear in the log, client or server > 3) I have tried putting logging up to DEBUG but nothing additional is > returned > 4) I have tried stepping through the code and the constructor executes > fine for the CellBrowser widget. > > My HTML page is set to standards mode; the first line is: > > <!doctype html> > > I am developing a GWT+GAE solution in Eclipse Helios and running the > application using the embedded test application server. > > I am using the incubator PagingScrollTable, therefore have the gwt- > incubator-20101117-r1766.jar in my build path. Is it possible that one > of these incubator components is conflicting with the CellBrowser? > > I have also tried creating a clean new standalone GWT 2.1 project, and > running the CellBrowserExample2.java Entry Point class unmodified. It > works fine. > > This is quite a frustrating problem because no exceptions make it very > difficult to progress. Any suggestions or recommendations would be > appreciated. > > -- > 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]<google-web-toolkit%[email protected]> > . > For more options, visit this group at > http://groups.google.com/group/google-web-toolkit?hl=en. > > -- 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.
