Re: Unpredictable Swing b

From:
"Andrew Thompson" <andrew.thompson@THRWHITE.remove-dii-this>
Newsgroups:
comp.lang.java.gui
Date:
Wed, 27 Apr 2011 15:40:07 GMT
Message-ID:
<796df14b29651@uwe>
  To: comp.lang.java.gui
H|Nkan Lane wrote:
...

- The reason why it asks for the user directory at one point is because
I read files from that directory when testing a feature. It probably
should not be in the code anymore.


OK, but if you decide different, note that you can point
a javax.jnlp.FileOpenService to the current directory by
feeding it a path hint of ".". Using JNLP services for
things like that, would allow this application to be
offered in a 'sandboxed' form.

...Thank you for this observation.


You are welcome. I have an interest in looking into
JWS apps. in general, to get a sense for how close
they come to being fully 'sandbox'able.

- I have used BorderLayouts for most of the frames. The JEditorPane is
just called with the constructor and the url of the displayed page as
the argument. I did not apply a Layoutmanager for that window.


A JWindow? Please try to be specific*, so we are all
sure we are 'on the same page'. A quick test** in Java
6 suggests the default layout for JWindow is BorderLayout
as well.

Without specifying a layout constraint for an added
Component, the default is BorderLayout.CENTER.

That is the window showing the Uni. site we are
referring too, right?

* Hey! You know what I was saying about 'specific'?
Now I recheck it I realise that is specifically *not*
a JWindow - looks like a JFrame, am I right? OK -
all the above is same for JFrame**, but please
refrain from using generic terms like 'window'.

Now - I still don't think I have quite managed to
communicate what I am seeing, but since 'a picture
paints a thousand words', I'll give you 'two thousand'..
<http://www.physci.org/test/screenshot/kafka-1-16.png>
<http://www.physci.org/test/screenshot/kafka-2-16.png>

Besides the odd problem of the web page appearing
and disappearing according to the width of stretched
main JFrame, the JTables of the JFrame could use
adjusting. Those JTables could do with stretching
left to right as the JFrame increases width. I
suspect they went into the WEST of one of the
BorderLayouts?

** Little example
<sscce>
import java.awt.*;
import javax.swing.*;

class DefaultLayoutManager {

  static String[] constraint =
  {
    BorderLayout.NORTH,
    BorderLayout.EAST,
    BorderLayout.WEST,
    BorderLayout.SOUTH,
    BorderLayout.CENTER
  };

  public static void main(String[] args) {
    JFrame root = new JFrame();
    System.out.println( root.getLayout() );

    for (int ii=0; ii<constraint.length; ii++ ) {
      root.add(
        new JButton(constraint[ii]),
        constraint[ii] );
    }

    //check where the component goes, by default
    root.add(new JLabel("Default") );

    root.pack();
    root.setVisible(true);
  }
}
</sscce>

--
Andrew Thompson
http://www.athompson.info/andrew/

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