java-gnome-developer

[Java-gnome-developer] error defining signals with glade

[<ga...@cw...>]

hiya,
i am trying to write a simple app using java-gnome and glade, but i
receive an error whenever i try to define a signal for a button in
glade.

the error says:
java.lang.reflect.InvocationTargetException: ListenerDelegate.create
failure

i receive this with sun's javavm 1.5 and gij-4, and i receive this for
each signal i have defined...

anyway, i am on ubuntu hoary, versions libgtk2-java/libglade-java:
2.8.3-2

Sourcecode:

public class HotplugManager {

	LibGlade glade;
	
	public HotplugManager() throws GladeXMLException, 
                                       FileNotFoundException, 
                                       IOException {
		glade = new LibGlade("data/hotplugmanager.glade", this);
	}
	
	public static void main(String[] args) {
		
		HotplugManager hotplugman;
		
		Gtk.init(args);
		try {
			hotplugman = new HotplugManager();
		} catch(Exception e) {
			e.printStackTrace();
		}
		Gtk.main();
		
	}
}

as you can see, i am not trying to catch the signal it is only defined
in the glade file: 
<widget class="GtkButton" id="button_execute">
		  <property name="visible">True</property>
		  <property name="can_default">True</property>
		  <property name="can_focus">True</property>
		  <property name="label">gtk-execute</property>
		  <property name="use_stock">True</property>
		  <property name="relief">GTK_RELIEF_NORMAL</property>
		  <property name="focus_on_click">True</property>
		  <signal name="clicked" handler="on_button_execute_clicked"
last_modification_time="Fri, 27 May 2005 20:56:57 GMT"/>
</widget>

does anyone have any ideas? 
thanks in advance
cheers
gaboro

Re: [Java-gnome-developer] error defining signals with glade

[Keith I. <ke...@ke...>]

On Fri, 2005-05-27 at 22:58 +0200, Ol=C3=A1h G=C3=A1bor wrote:
> hiya,
> i am trying to write a simple app using java-gnome and glade, but i
> receive an error whenever i try to define a signal for a button in
> glade.

Do you think it's related to:

	http://bugzilla.gnome.org/show_bug.cgi?id=3D305620

which I posted today?  Seems that only some of the signals have the
problem, or is it all of them in your experience?

Keith


> the error says:
> java.lang.reflect.InvocationTargetException: ListenerDelegate.create
> failure
>=20
> i receive this with sun's javavm 1.5 and gij-4, and i receive this for
> each signal i have defined...
>=20
> anyway, i am on ubuntu hoary, versions libgtk2-java/libglade-java:
> 2.8.3-2
>=20
> Sourcecode:
>=20
> public class HotplugManager {
>=20
> 	LibGlade glade;
> =09
> 	public HotplugManager() throws GladeXMLException,=20
>                                        FileNotFoundException,=20
>                                        IOException {
> 		glade =3D new LibGlade("data/hotplugmanager.glade", this);
> 	}
> =09
> 	public static void main(String[] args) {
> 	=09
> 		HotplugManager hotplugman;
> 	=09
> 		Gtk.init(args);
> 		try {
> 			hotplugman =3D new HotplugManager();
> 		} catch(Exception e) {
> 			e.printStackTrace();
> 		}
> 		Gtk.main();
> 	=09
> 	}
> }
>=20
> as you can see, i am not trying to catch the signal it is only defined
> in the glade file:=20
> <widget class=3D"GtkButton" id=3D"button_execute">
> 		  <property name=3D"visible">True</property>
> 		  <property name=3D"can_default">True</property>
> 		  <property name=3D"can_focus">True</property>
> 		  <property name=3D"label">gtk-execute</property>
> 		  <property name=3D"use_stock">True</property>
> 		  <property name=3D"relief">GTK_RELIEF_NORMAL</property>
> 		  <property name=3D"focus_on_click">True</property>
> 		  <signal name=3D"clicked" handler=3D"on_button_execute_clicked"
> last_modification_time=3D"Fri, 27 May 2005 20:56:57 GMT"/>
> </widget>
>=20
> does anyone have any ideas?=20
> thanks in advance
> cheers
> gaboro
>=20
>=20
>=20
>=20
> -------------------------------------------------------
> This SF.Net email is sponsored by Yahoo.
> Introducing Yahoo! Search Developer Network - Create apps using Yahoo!
> Search APIs Find out how you can build Yahoo! directly into your own
> Applications - visit http://developer.yahoo.net/?fr=3Doffad-ysdn-ostg-q=
22005
> _______________________________________________
> java-gnome-developer mailing list
> jav...@li...
> https://lists.sourceforge.net/lists/listinfo/java-gnome-developer

Re: [Java-gnome-developer] error defining signals with glade

[Andrew C. <an...@op...>]

On Fri, 2005-27-05 at 14:19 -0700, Keith Irwin wrote:
> On Fri, 2005-05-27 at 22:58 +0200, Oláh Gábor wrote:
> > i am trying to write a simple app using java-gnome and glade, but i
> > receive an error whenever i try to define a signal for a button in
> > glade.

While signal autoconnection from LibGlade works in many circumstances,
you're going to have problems when you try to connect signals with
complex prototypes.

So, frankly, if you're working in java-gnome, I would recommend you use
the 

    WhateverWidget whatever = (WhateverWidgit)
glade.getWidget("whatever");
...
        whatever.addListener(new WhateverListener() {
        	public void whateverEvent(WhateverEvent event) {
        		// your code here
        	}
        });
        
construct that is familiar from other Java graphical user interface
toolkits. 

Personally, I find that whole thing just a little ugly, but I have to
admit that having done both ways, I find that the Listener/Event way
provides much greater control over the events, especially in terms of
getting to the details of the event.

So that's what I recommend.

[Eclipse makes this dead easy, by the way]

AfC
Calgary

-- 
Andrew Frederick Cowie

Technology strategy, managing change, establishing procedures,
and executing successful upgrades to mission critical business
infrastructure.

http://www.operationaldynamics.com/

Sydney   New York   Toronto   London

Re: [Java-gnome-developer] error defining signals with glade

[Jeff M. <ku...@gm...>]

On 5/27/05, Ol=E1h G=E1bor <ga...@cw...> wrote:
> the error says:
> java.lang.reflect.InvocationTargetException: ListenerDelegate.create
> failure

The problem here is that you have defined a callback=20
(on_button_execute_clicked) but this method doesn't exist
in your example.  This is not a Java-GNOME bug.  If you
add this method you will see that it works fine.

>=20
> i receive this with sun's javavm 1.5 and gij-4, and i receive this for
> each signal i have defined...
>=20
> anyway, i am on ubuntu hoary, versions libgtk2-java/libglade-java:
> 2.8.3-2
>=20
> Sourcecode:
>=20
> public class HotplugManager {
>=20
>         LibGlade glade;
>=20
>         public HotplugManager() throws GladeXMLException,
>                                        FileNotFoundException,
>                                        IOException {
>                 glade =3D new LibGlade("data/hotplugmanager.glade", this)=
;
>         }
>=20
>         public static void main(String[] args) {
>=20
>                 HotplugManager hotplugman;
>=20
>                 Gtk.init(args);
>                 try {
>                         hotplugman =3D new HotplugManager();
>                 } catch(Exception e) {
>                         e.printStackTrace();
>                 }
>                 Gtk.main();
>=20
>         }
> }
>=20
> as you can see, i am not trying to catch the signal it is only defined
> in the glade file:
> <widget class=3D"GtkButton" id=3D"button_execute">
>                   <property name=3D"visible">True</property>
>                   <property name=3D"can_default">True</property>
>                   <property name=3D"can_focus">True</property>
>                   <property name=3D"label">gtk-execute</property>
>                   <property name=3D"use_stock">True</property>
>                   <property name=3D"relief">GTK_RELIEF_NORMAL</property>
>                   <property name=3D"focus_on_click">True</property>
>                   <signal name=3D"clicked" handler=3D"on_button_execute_c=
licked"
> last_modification_time=3D"Fri, 27 May 2005 20:56:57 GMT"/>
> </widget>
>=20
> does anyone have any ideas?
> thanks in advance
> cheers
> gaboro
>=20
>=20
>=20
>=20
> -------------------------------------------------------
> This SF.Net email is sponsored by Yahoo.
> Introducing Yahoo! Search Developer Network - Create apps using Yahoo!
> Search APIs Find out how you can build Yahoo! directly into your own
> Applications - visit http://developer.yahoo.net/?fr=3Doffad-ysdn-ostg-q22=
005
> _______________________________________________
> java-gnome-developer mailing list
> jav...@li...
> https://lists.sourceforge.net/lists/listinfo/java-gnome-developer
>=20


--=20
Jeffrey Morgan

"The highest reward for a man's toil is not
what he gets for it, but what he becomes by it"
    - Jon Ruskin

Re: [Java-gnome-developer] error defining signals with glade

[Tomasz M. <tmi...@co...>]

Dnia 27-05-2005, pią o godzinie 18:51 -0400, Jeff Morgan napisał(a):
> ailure
> 
> The problem here is that you have defined a callback 
> (on_button_execute_clicked) but this method doesn't exist
> in your example.  This is not a Java-GNOME bug.  If you
> add this method you will see that it works fine.

i'm new to java-gnome and I had the same problem. so forgive me my
(maybe lame) question but where this method should be implemented? in
which class?

-- 
t.m.
Tomasz Mielnik

Re: [Java-gnome-developer] error defining signals with glade

[<ga...@cw...>]

hiya,

2005-05-27, p keltez=C3=A9ssel 18.51-kor Jeff Morgan ezt =C3=ADrta:
> On 5/27/05, Ol=C3=A1h G=C3=A1bor <ga...@cw...> wrote:
> > the error says:
> > java.lang.reflect.InvocationTargetException: ListenerDelegate.create
> > failure
>=20
> The problem here is that you have defined a callback=20
> (on_button_execute_clicked) but this method doesn't exist
> in your example.  This is not a Java-GNOME bug.  If you
> add this method you will see that it works fine.
thanks for the comment, but defining the method does no difference - i
get the same error...

short example:=20

package org.testing;
import java.io.FileNotFoundException;
import java.io.IOException;
import org.gnu.glade.GladeXMLException;
import org.gnu.glade.LibGlade;
import org.gnu.gtk.Gtk;

public class HotplugManager {

	LibGlade glade;
=09
	public HotplugManager() throws GladeXMLException, =20
                                       FileNotFoundException,=20
                                      IOException {
		glade =3D new LibGlade("test.glade", this);
	}
=09
	public int on_button1_clicked() {
		System.out.println("pressed");
		return 0;
	}=09
=09
	public static void main(String[] args) {
	=09
		HotplugManager hotplugman;=09
	=09
		Gtk.init(args);
		try {
			hotplugman =3D new HotplugManager();
		} catch(Exception e) {
			e.printStackTrace();
		}
		Gtk.main();
	=09
	}
}

test.glade:=20

<?xml version=3D"1.0" standalone=3D"no"?> <!--*- mode: xml -*-->
<!DOCTYPE glade-interface SYSTEM "http://glade.gnome.org/glade-2.0.dtd">

<glade-interface>

<widget class=3D"GtkWindow" id=3D"window1">
  <property name=3D"visible">True</property>
  <property name=3D"title" translatable=3D"yes">window1</property>
  <property name=3D"type">GTK_WINDOW_TOPLEVEL</property>
  <property name=3D"window_position">GTK_WIN_POS_NONE</property>
  <property name=3D"modal">False</property>
  <property name=3D"resizable">True</property>
  <property name=3D"destroy_with_parent">False</property>
  <property name=3D"decorated">True</property>
  <property name=3D"skip_taskbar_hint">False</property>
  <property name=3D"skip_pager_hint">False</property>
  <property name=3D"type_hint">GDK_WINDOW_TYPE_HINT_NORMAL</property>
  <property name=3D"gravity">GDK_GRAVITY_NORTH_WEST</property>
  <property name=3D"focus_on_map">True</property>

  <child>
    <widget class=3D"GtkVBox" id=3D"vbox1">
      <property name=3D"visible">True</property>
      <property name=3D"homogeneous">False</property>
      <property name=3D"spacing">0</property>

      <child>
	<widget class=3D"GtkButton" id=3D"button1">
	  <property name=3D"visible">True</property>
	  <property name=3D"can_focus">True</property>
	  <property name=3D"label" translatable=3D"yes">button</property>
	  <property name=3D"use_underline">True</property>
	  <property name=3D"relief">GTK_RELIEF_NORMAL</property>
	  <property name=3D"focus_on_click">True</property>
	  <signal name=3D"clicked" handler=3D"on_button1_clicked"
last_modification_time=3D"Fri, 27 May 2005 20:51:54 GMT"/>
	</widget>
	<packing>
	  <property name=3D"padding">0</property>
	  <property name=3D"expand">False</property>
	  <property name=3D"fill">False</property>
	</packing>
      </child>
    </widget>
  </child>
</widget>

</glade-interface>


cheers
gaboro

Re: [Java-gnome-developer] error defining signals with glade

[Keith I. <ke...@ke...>]

I think the method needs to be void:

  public void on_button1_clicked() {
    System.out.println("clicked");
  }

If you check out the tutorial on the java-gnome site, I think it
explicitly says this somewhere.

-K

On Sat, 2005-05-28 at 22:16 +0200, Oláh Gábor wrote:
> hiya,
> 
> 2005-05-27, p keltezéssel 18.51-kor Jeff Morgan ezt írta:
> > On 5/27/05, Oláh Gábor <ga...@cw...> wrote:
> > > the error says:
> > > java.lang.reflect.InvocationTargetException: ListenerDelegate.create
> > > failure
> > 
> > The problem here is that you have defined a callback 
> > (on_button_execute_clicked) but this method doesn't exist
> > in your example.  This is not a Java-GNOME bug.  If you
> > add this method you will see that it works fine.
> thanks for the comment, but defining the method does no difference - i
> get the same error...
> 
> short example: 
> 
> package org.testing;
> import java.io.FileNotFoundException;
> import java.io.IOException;
> import org.gnu.glade.GladeXMLException;
> import org.gnu.glade.LibGlade;
> import org.gnu.gtk.Gtk;
> 
> public class HotplugManager {
> 
> 	LibGlade glade;
> 	
> 	public HotplugManager() throws GladeXMLException,  
>                                        FileNotFoundException, 
>                                       IOException {
> 		glade = new LibGlade("test.glade", this);
> 	}
> 	
> 	public int on_button1_clicked() {
> 		System.out.println("pressed");
> 		return 0;
> 	}	
> 	
> 	public static void main(String[] args) {
> 		
> 		HotplugManager hotplugman;	
> 		
> 		Gtk.init(args);
> 		try {
> 			hotplugman = new HotplugManager();
> 		} catch(Exception e) {
> 			e.printStackTrace();
> 		}
> 		Gtk.main();
> 		
> 	}
> }
> 
> test.glade: 
> 
> <?xml version="1.0" standalone="no"?> <!--*- mode: xml -*-->
> <!DOCTYPE glade-interface SYSTEM "http://glade.gnome.org/glade-2.0.dtd">
> 
> <glade-interface>
> 
> <widget class="GtkWindow" id="window1">
>   <property name="visible">True</property>
>   <property name="title" translatable="yes">window1</property>
>   <property name="type">GTK_WINDOW_TOPLEVEL</property>
>   <property name="window_position">GTK_WIN_POS_NONE</property>
>   <property name="modal">False</property>
>   <property name="resizable">True</property>
>   <property name="destroy_with_parent">False</property>
>   <property name="decorated">True</property>
>   <property name="skip_taskbar_hint">False</property>
>   <property name="skip_pager_hint">False</property>
>   <property name="type_hint">GDK_WINDOW_TYPE_HINT_NORMAL</property>
>   <property name="gravity">GDK_GRAVITY_NORTH_WEST</property>
>   <property name="focus_on_map">True</property>
> 
>   <child>
>     <widget class="GtkVBox" id="vbox1">
>       <property name="visible">True</property>
>       <property name="homogeneous">False</property>
>       <property name="spacing">0</property>
> 
>       <child>
> 	<widget class="GtkButton" id="button1">
> 	  <property name="visible">True</property>
> 	  <property name="can_focus">True</property>
> 	  <property name="label" translatable="yes">button</property>
> 	  <property name="use_underline">True</property>
> 	  <property name="relief">GTK_RELIEF_NORMAL</property>
> 	  <property name="focus_on_click">True</property>
> 	  <signal name="clicked" handler="on_button1_clicked"
> last_modification_time="Fri, 27 May 2005 20:51:54 GMT"/>
> 	</widget>
> 	<packing>
> 	  <property name="padding">0</property>
> 	  <property name="expand">False</property>
> 	  <property name="fill">False</property>
> 	</packing>
>       </child>
>     </widget>
>   </child>
> </widget>
> 
> </glade-interface>
> 
> 
> cheers
> gaboro
> 
> 
> 
> -------------------------------------------------------
> This SF.Net email is sponsored by Yahoo.
> Introducing Yahoo! Search Developer Network - Create apps using Yahoo!
> Search APIs Find out how you can build Yahoo! directly into your own
> Applications - visit http://developer.yahoo.net/?fr=offad-ysdn-ostg-q22005
> _______________________________________________
> java-gnome-developer mailing list
> jav...@li...
> https://lists.sourceforge.net/lists/listinfo/java-gnome-developer

Re: [Java-gnome-developer] error defining signals with glade

[<ga...@cw...>]

2005-05-28, szo keltez=C3=A9ssel 13.25-kor Keith Irwin ezt =C3=ADrta:
> I think the method needs to be void:
>=20
>   public void on_button1_clicked() {
>     System.out.println("clicked");
>   }
>=20
> If you check out the tutorial on the java-gnome site, I think it
> explicitly says this somewhere.
you are right, but it does not make any difference, either :-((.

cheers
gaboro

Re: [Java-gnome-developer] error defining signals with glade

[Michael K. <mk...@gm...>]

> > I think the method needs to be void:
> > 
> >   public void on_button1_clicked() {
> >     System.out.println("clicked");
> >   }
> > 
> > If you check out the tutorial on the java-gnome site, I think it
> > explicitly says this somewhere.
> you are right, but it does not make any difference, either :-((.
> 
> cheers
> gaboro

Hello,

I'm new to JG and this list, but perhaps I can help ...

I have Ubuntu Hoary, too, and I encountered the same problem.
I updated to JG 2.10 and everything runs fine. I'm not aware of Hoary
packages for JG 2.10 so you have to compile it yourself.

Cheers,
Michael

Re: [Java-gnome-developer] error defining signals with glade

[Tomasz M. <tmi...@co...>]

Dnia 28-05-2005, sob o godzinie 22:35 +0200, Oláh Gábor napisał(a):
> 2005-05-28, szo keltezéssel 13.25-kor Keith Irwin ezt írta:
> > I think the method needs to be void:
> > 
> >   public void on_button1_clicked() {
> >     System.out.println("clicked");
> >   }
> > 
> > If you check out the tutorial on the java-gnome site, I think it
> > explicitly says this somewhere.
> you are right, but it does not make any difference, either :-((.

I have the same problem still.
maybe it's the problem of old java-gnome version?
I use :
libgladejava2.8.so
libgtkjava2.4.so
libgnomejava2.8.so

regards.

-- 
t.m.
Tomasz Mielnik

Re: [Java-gnome-developer] error defining signals with glade

[Remy S. <rem...@gm...>]

> 
> I have the same problem still.
> maybe it's the problem of old java-gnome version?
> I use :
> libgladejava2.8.so
> libgtkjava2.4.so
> libgnomejava2.8.so

It might be a version issue. I'm running Java 1.4.2_08, libgtk-java
2.6.1, libgnome-java and libglade-java at 2.10.1 myself. I was able to
run the code that Olah provided with no problems.

Regards,
Rem