Re: keyboard shortcuts with CTRL

Hi Marcin,

We are using shortcut keys in our application. I have written the below code which uses CTRL+S. But there is an additional requirement that when the window is opened using the same CTRL+S the window should close. Is this possible. How do we do something like this.

    Event.addNativePreviewHandler(new Event.NativePreviewHandler() {
      @Override
      public void onPreviewNativeEvent(Event.NativePreviewEvent event) {
          NativeEvent ne = event.getNativeEvent();
          final int eventType = event.getTypeInt();
          boolean keyHandled = false;
          switch (eventType) {
              case Event.ONKEYDOWN:
                  if (ne.getCtrlKey()) {
                      switch (ne.getKeyCode()) {
                          case 's':
                          case 'S':
                            ne.preventDefault();
                            Scheduler.get().scheduleDeferred(new ScheduledCommand() {                             
                              @Override
                              public void execute() {
                                processSearchEvents(params);                               
                              }
                            });                           
                            break;
                      }
                  }
              }
  
        }
     });

Thanks,
Rahul

On Monday, October 4, 2010 7:44:05 PM UTC+5:30, Marcin Misiewicz wrote:

Here i post the solution.

Actually it's very easy :

                HandlerRegistration logHandler = Event.addNativePreviewHandler(new
NativePreviewHandler() {

                        @Override
                        public void onPreviewNativeEvent(NativePreviewEvent event) {
                                NativeEvent ne = event.getNativeEvent();
                                if (ne.getCtrlKey() && (ne.getKeyCode()=='l' ||
ne.getKeyCode()=='L')) {
                                        ne.preventDefault();
                                        DeferredCommand.addCommand(new Command() {

                                                @Override
                                                public void execute() {
                                                        loggerWindow.show();
                                                }
                                        });
                                }
                        }
                });

CTRL+l oraz CTRL+L - opens the window with log messages.

On 1 Paź, 00:35, Marcin Misiewicz <misq...@gmail.com> wrote:
> I'm also interested in that topic. Does anybody has some experience
> with keyboard shortcuts in gwt.
>
> I'd like to have at least one application wide shortcut for opening a
> log panel and a few shortcuts
> dependent of what panel actually has focus on.
>
> On 1 Wrz, 19:13, levier <levi.mail.l...@gmail.com> wrote:
>
>
>
>
>
>
>
> > Hi all,
>
> > I'm developing an enterprise application and all users scream forkeyboardshortcuts.
> > And not shortcuts like you see in GMail (focus some widget, press c to
> > compose a new mail etc) but true CTRL+N, CTRL+S like you see in a
> > desktop application.
> > I thought it really couldn't be done, till I tried the google docs in
> > Chrome: CTRL+B made my text bold. Wow, that works! But probably it
> > only works on Chrome right, I thought, so I didn't really believe in
> > it and let it pass.
>
> > Then I saw Microsoft releasingkeyboardshortcuts in Hotmail. I tried
> > one and I got a pop up saying "hey you pressed some key, did you mean
> > it askeyboardshortcut?"... hahaha, so again I let it pass and
> > thought it couldn't be done.
> > But today I saw Microsoft releasing their Word, Excel... Office suite
> > on-line (search for Office Web Apps). I tried CTRL+B and it put my
> > text in bold and didn't show my Bookmarks bar instead! In IE8 and
> > Chrome.
>
> > Now, some proof that it doesn't really work all of the time: I
> > selected the text on the top of the page, hit CTRL+S and nothing
> > happens... there goes my belief in in-browserkeyboardshortcuts
> > again.
> > I guess thekeyboardlistener is only put on the textarea and ribbon
> > bar and not a "true browser window listener".
>
> > Still, my question stands:
> > how can I blockkeyboardshortcuts like CTR+O, CTRL+N and do something
> > with them instead of letting the browser handle them (CTRL+N typically
> > opens a new browser window, I don't want that)? Any advice is much
> > appreciated.

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