Well, I'm ran into this problem while doing the tutorial. I applied
your solution, but it still doesn't work properly. When I press enter
in the text box, the error alert comes up, but only for a fraction of
second, after which it disappears. It works fine for the button click.
Here's my pertinent code. Any idea what I might be missing? Google
should really update their tutorial so it works. This type of thing
doesn't encourage people who are new to the product to continue to use
it.
// Listen for keyboard events in the input box.
newSymbolTextBox.addKeyDownHandler(new KeyDownHandler() {
public void onKeyDown(KeyDownEvent event) {
if (event.getNativeEvent().getKeyCode() == KeyCodes.KEY_ENTER)
{
addStock();
}
}
});
}
/**
* Add stock to FlexTable. Executed when the user clicks the
addStockButton or
* presses enter in the newSymbolTextBox.
*/
private void addStock() {
final String symbol =
newSymbolTextBox.getText().toUpperCase().trim();
newSymbolTextBox.setFocus(true);
// Stock code must be between 1 and 10 chars that are numbers,
letters, or dots.
if (!symbol.matches("^[0-9A-Z\\.]{1,10}$")) {
Window.alert("'" + symbol + "' is not a valid symbol.");
newSymbolTextBox.selectAll();
return;
}
newSymbolTextBox.setText("");
// TODO Don't add the stock if it's already in the table.
// TODO Add the stock to the table.
// TODO Add a button to remove this stock from the table.
// TODO Get the stock price.
}
On Dec 3 2010, 12:36 pm, Brian Reilly <[email protected]> wrote:
> Greg,
>
> As I mentioned in a thread earlier today
> (http://groups.google.com/group/google-web-toolkit/browse_thread/threa...),
> try using a KeyDownEvent handler and inspect
> event.getNativeEvent().getKeyCode()
> instead of event.getCharCode().
>
> From the other thread, it sounds like this behavior may have changed in 2.1,
> so it could be that the documentation is wrong, but only as of fairly
> recently.
>
> -Brian
>
> On Fri, Dec 3, 2010 at 3:21 PM, Greg Dougherty
> <[email protected]>wrote:
>
> > Ok, the tutorial says that to get a user pressing an enter key in a
> > TextBox you should write something like the following:
>
> >http://code.google.com/webtoolkit/doc/latest/tutorial/manageevents.html
>
> > public void onKeyPress (KeyPressEvent event)
> > {
> > char keyPress = event.getCharCode();
> > int keyCode = keyPress;
> > if (keyPress == KeyCodes.KEY_ENTER)
> > goToRecord ();
> > }
>
> > Unfortunately, when I do that, I get a keyCode of 0 for Enter, Tab,
> > and Left Arrow (the keys I tested), while I get the actual key when I
> > type a number key. What gives? Is the tutorial wrong? If so, what
> > should I be calling?
>
> > TIA,
>
> > Greg
>
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