#4 Context menues with KDE3 and java1.4.0

[joerg feuerhake]

there seems to be a problem with the right button
menues under kde3 with java140. they just do not
appear. this behavior seems to be reproducable. i'm
going to try to find out what that is but i'm short
with time lately...

[Stefan Bragd]

Logged In: YES
user_id=799687

I run touchgraph on linux with KDE.
One difference between windows and UNIX/Linux (and maybe
MacOS) is that menus are not activated untill you release
the menu button. To enable Touchgraphs menus for Linux I
copied the following from mouseReleased() to mousePressed()
in the files LBEditUI.java and LBNavigateUI.java:
public void mouseReleased(MouseEvent e) {
if (e.isPopupTrigger()) {
.......
}

/Stefan Bragd

[jerry]

Logged In: YES
user_id=991920

Wanted to mention that the touchgraph link browser(java
client) client starts correctly in Redhat 9, but i found one
problem when trying to edit links. The problem being that I
can't open the small popup menu when i right click in linux
RedHat 9. left clicking while dragging on a selected link
(in edit mode) lets you create a new link both in microsoft
windows 95a and in Redhat 9. When i right click in win95a, a
small menu appears that allows me to edit a link, but this
menu doesn't appear after right clicking a link in edit mode
in redhat 9 (which does work with TG link browser in win95).

I tried using a 2 button mouse with 3 button emulation. I
also tried to use a 3 button logitech trackball which works
with the old logitech c7 setting in Redhat. I also tried to
operate the mouse with it's three buttons using the number
keypad in linux, which works in other applications under
linux. The same problem still happens in trying all of these
methods.

I was told that unix and windows use different "select,"
"extend," and "menu" buttons(in relation to the mouse).

Maybe, microsoft windows is using a different method of
interpreting the right mouse button than redhat linux 9. if
so, maybe there is a way to do this in linux (really, i have
no idea how this could be done, but am open to try).

If there is a solution, i would appreciate knowing how to go
about doing it. .

note: I am using Sun's java 1.4.2_04 in windows 95a and I am
using Sun's java 1.4.2_03 in Redhat 9. Both are the most
current, i just downloaded them recently.

note: touchgraph link browser is an open source java client
and applet under the GNU general Public License. I think
that the source code was included with the binary. I am
using touchgraph link browser v 1.20 . I downloaded from
sourceforge.net

i asked the following and received a reply at
experts-exchange.com:

http://www.experts-exchange.com/Programming/Programming_Languages/Java/Q_20974385.html#10976643

note: i have gnome and kde installed with linux redhat 9

[Nobody/Anonymous]

Logged In: NO

My code was lost in a disk crach, but I downloaded it again
and now have the menu functioning again.
This is how I did. I worked from the command shell.
I made my own .jar file in the source directory.
I did not manage to compile proxy.jar this time. It requires
a package called javax.servlet.
I don't remember where I found it. I had installed Tomcat
http-server and NetBeans at that time.
Or I might have downloaded it from the Internet.

-------------------------------------------------------------------------------------------
Put the following in a file TGLB.sh
#! /bin/sh
java -cp
TGLinkBrowser.jar:nanoxml-2.1.1.jar:BrowserLauncher.jar
com.touchgraph.linkbrowser.TGLinkBrowser&

To run the linkbrowser, type:
chmod u+x TGLB.sh
./TGLB.sh

Check that you can run TGLB.sh (The original code)

First here is how I managed to compile the original source

To compile the code:
#-------------------------------------------
1. Compile files for TGLinkBrowser.jar

cd src

mkdir edu
mkdir edu/stanford
mkdir edu/stanford/ejalbert
copy ./BrowserLauncher.java edu/stanford/ejalbert

javac BrowserLauncher.java
(cd com/touchgraph/graphlayout/; javac -sourcepath ../../..
*.java; ll)
(cd com/touchgraph/graphlayout/interaction/; javac
-sourcepath ../../../.. *.java; ll)
(cd com/touchgraph/graphlayout/graphelements/; javac
-sourcepath ../../../.. *.java; ll)

mkdir edu/stanford/ejalbert
copy ./BrowserLauncher.java edu/stanford/ejalbert

jar xvf ../nanoxml-2.1.1.jar
(cd com/touchgraph/linkbrowser/; javac -classpath ../../..
-sourcepath .:../../.. *.java; ll)

# Compare the outputs from the following two commands.
Check that all classes has been compiled
# in directory com/ and below
jar tvf ../TGLinkBrowser.jar
find . -name '*.class' -ls

#-------------------------------------------
2. Create the file TGLinkBrowser.jar
jar cvf TGLinkBrowser.jar com
#-------------------------------------------
3. Make a start script to run your modified TGLinkBrowser
Move out from directory src
cd ..
Put the following in a file TUX_TGLB.sh
#! /bin/sh
java -cp
src/TGLinkBrowser.jar:nanoxml-2.1.1.jar:BrowserLauncher.jar
com.touchgraph.linkbrowser.TGLinkBrowser&

# Note! it should be src/ before TGLinkBrowser.jar

To run the linkbrowser, type:
chmod u+x TUX_TGLB.sh
./TUX_TGLB.sh

Check that you can run TUX_TGLB.sh (Your compilation of the
original source)

Now edit the following files: (Shown in the samples at the
end of this letter)
src/com/touchgraph/linkbrowser/LBEditUI.java
src/com/touchgraph/linkbrowser/LBNavigateUI.java

Compile the linkbrowser directory again, or just the two files.
(cd com/touchgraph/linkbrowser/; javac -classpath ../../..
-sourcepath .:../../.. *.java; ll)
Make a new .jar file in the src directory.
(cd src; jar cvf TGLinkBrowser.jar com)

Go to the top directory and run the startscript.
stefan@saturn:~/Desktop/TGLB120> ls *.sh
TGLB.sh TUX_TGLB.sh

./TUX_TGLB.sh

The menu should now appear when you click the right mouse
button.

Good Luck
/Stefan Bragd

############################################################################################
Sample from LBNavigateUI.java
############################################################################################
class LBNavigateMouseListener extends MouseAdapter {

public void mousePressed(MouseEvent e) {
//-----------INSERTED-VVVVVVVVVVVVVVV-------------
if (e.isPopupTrigger()) {
popupNode = (LBNode) tgPanel.getMouseOverN();
popupEdge = (LBEdge) tgPanel.getMouseOverE();
if (popupNode!=null) {
tgPanel.setMaintainMouseOver(true);
lbNodeHintUI.deactivate();
nodePopup.show(e.getComponent(), e.getX(), e.getY());
}
else if (popupEdge!=null) {
tgPanel.setMaintainMouseOver(true);
lbNodeHintUI.deactivate();
edgePopup.show(e.getComponent(), e.getX(),
e.getY());
}
else {
tgLinkBrowser.lbPopup.show(e.getComponent(),
e.getX(), e.getY());
}
}
//------------------INSERTED-^^^^^^^^^^^^^^^---------
LBNode mouseOverN = (LBNode) tgPanel.getMouseOverN();

if (e.getModifiers() == MouseEvent.BUTTON1_MASK) {
if (mouseOverN == null)
hvDragUI.activate(e);
else
dragNodeUI.activate(e);
}
}

public void mouseClicked(MouseEvent e) {
LBNode mouseOverN = (LBNode) tgPanel.getMouseOverN();
LBNode select = (LBNode) tgPanel.getSelect();
if ((e.getModifiers() & MouseEvent.BUTTON1_MASK)!=0) {
if (mouseOverN != null) {
if (mouseOverN!=select) {
tgPanel.setSelect(mouseOverN);
tgPanel.setLocale(mouseOverN, localityScroll.getRadius());
//hvScrollToCenterUI.activate(e);
}
else {
tgLinkBrowser.processNodeUrl(mouseOverN);
}
}
}
}

public void mouseReleased(MouseEvent e) {
if (e.isPopupTrigger()) {
popupNode = (LBNode) tgPanel.getMouseOverN();
popupEdge = (LBEdge) tgPanel.getMouseOverE();
if (popupNode!=null) {
tgPanel.setMaintainMouseOver(true);
lbNodeHintUI.deactivate();
nodePopup.show(e.getComponent(), e.getX(), e.getY());
}
else if (popupEdge!=null) {
tgPanel.setMaintainMouseOver(true);
lbNodeHintUI.deactivate();
edgePopup.show(e.getComponent(), e.getX(),
e.getY());
}
else {
tgLinkBrowser.lbPopup.show(e.getComponent(),
e.getX(), e.getY());
}
}
}
}

############################################################################################
Sample from LBEditUI.java
############################################################################################
class LBEditMouseListener extends MouseAdapter {
public void mousePressed(MouseEvent e) {
//-------INSERTED-VVVVVVVVVVVVVVVVVV---------------------
if (e.isPopupTrigger()) {
popupNode = (LBNode) tgPanel.getMouseOverN();
popupEdge = (LBEdge) tgPanel.getMouseOverE();
if (popupNode!=null) {
tgPanel.setMaintainMouseOver(true);
tgPanel.removeMouseListener(ml); //So
that dismissing popup does not add node
nodePopup.show(e.getComponent(),
e.getX(), e.getY());
}
else if (popupEdge!=null) {
tgPanel.setMaintainMouseOver(true);
tgPanel.removeMouseListener(ml); //So
that dismissing popup does not add node
edgePopup.show(e.getComponent(),
e.getX(), e.getY());
}
else {

tgLinkBrowser.lbPopup.show(e.getComponent(), e.getX(),
e.getY());
}
//else {
// backPopup.show(e.getComponent(),
e.getX(), e.getY());
//}
}
//-----INSERTED-^^^^^^^^^^^^^^^------------------
LBNode mouseOverN = (LBNode) tgPanel.getMouseOverN();
LBNode select = (LBNode) tgPanel.getSelect();

if (e.getModifiers() == MouseEvent.BUTTON1_MASK) {
if (mouseOverN != null) {
if(mouseOverN!=select)
dragNodeUI.activate(e);
else
dragAddNodeUI.activate(e);
}
else {
hvDragUI.activate(e);
}

}
}

public void mouseClicked(MouseEvent e) {
if (e.getModifiers() == MouseEvent.BUTTON1_MASK)
switchSelectUI.activate(e);

}

public void mouseReleased(MouseEvent e) {
if (e.isPopupTrigger()) {
popupNode = (LBNode) tgPanel.getMouseOverN();
popupEdge = (LBEdge) tgPanel.getMouseOverE();
if (popupNode!=null) {
tgPanel.setMaintainMouseOver(true);
tgPanel.removeMouseListener(ml); //So
that dismissing popup does not add node
nodePopup.show(e.getComponent(),
e.getX(), e.getY());
}
else if (popupEdge!=null) {
tgPanel.setMaintainMouseOver(true);
tgPanel.removeMouseListener(ml); //So
that dismissing popup does not add node
edgePopup.show(e.getComponent(),
e.getX(), e.getY());
}
else {

tgLinkBrowser.lbPopup.show(e.getComponent(), e.getX(),
e.getY());
}
//else {
// backPopup.show(e.getComponent(),
e.getX(), e.getY());
//}
}
}
}