Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > comp.lang.java.gui > #2645

Re: Menu Removes Focus

Show all headers | View raw

  To: comp.lang.java.gui,comp.l
In article <1192199555.846573.118100@v29g2000prd.googlegroups.com>,
 Jason Cavett <jason.cavett@gmail.com> wrote:

> I'm curious - how do I know what component has focus when I need to
> pop up a menu to complete a task.
> 
> For example, in my JTree, I have a popup menu that comes up when I
> right click on the tree.  Well, the JTree is the "real" object that
> has focus (for a paste/cut/copy/whatever), but now that the menu is
> shown, Java thinks it is the thing to have the real focus.
> 
> Hopefully that makes sense.
> 
> 
> Thanks

The popup really is the item with "real" focus in this case.  Only one 
component at any time can have "the focus" in your application.  When a 
popup is displayed, it's a window of a sort and deactivates the one 
containing your tree.  But you'll find in the API for Window (one of the 
superclasses to JDialog and JFrame) that there's a method named 
getMostRecentFocusOwner which will identify the Component owning the 
focus when the window regains focus.

HTH,
= Steve =
-- 
Steve W. Jackson
Montgomery, Alabama

---
 * Synchronet * The Whitehouse BBS --- whitehouse.hulds.com --- check it out free usenet!
--- Synchronet 3.15a-Win32 NewsLink 1.92
Time Warp of the Future BBS - telnet://time.synchro.net:24

Back to comp.lang.java.gui | Previous | Next — Previous in thread | Find similar | Unroll thread

Thread

Menu Removes Focus "Jason Cavett" <jason.cavett@THRWHITE.remove-dii-this> - 2011-04-27 15:40 +0000
  Re: Menu Removes Focus "Steve W. Jackson" <steve.w..jackson@THRWHITE.remove-dii-this> - 2011-04-27 15:40 +0000

csiph-web