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.
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