ActionListener question

[bos]

On a program I'm working on, I'd like to be able to either right-click or alt-click or something similar to get two separate actions from the same button. I usually use the button.addActionListener(actionevent e) code for buttons but I don't know how to implement the ideas above. Please let me know any suggestions you might have.

Thanks

 

[Targol]

I think a good way to do what you want is to use the

addMouseListener

method from the superclass

Component

Water is not bad as soon as it stays out human body ;-)

 

[sedj]

Unfortnately, I do not belive it is possible to capture the right-click event in java (unless there is a method in 1.4). I've read through the 'Mouse*' classes in java.awt.event and there are only references to "mouse clicked" - no left or right button events.

However in the class MouseEvent class (triggered by MouseListener or MouseMotionListener, there is a 'getClickCount()' method - which I reckon you could set up to listen for double-clicks (instead of right-clicks).

Failing that, it is possible to link actions to keyboard depressions - take a look at the KeyEvent and KeyListener classes - you can add mneumonics to your buttons to indicate these actions - or even ToolTips when the mouse passes over the button.

Failing that - have you considered a second button ?!

 

[MarsChelios]

Hi bos,
To do this you will need to add a

MouseListener

to your button. This will allow you to determine when they press down on the button, using

mousePressed (MouseEvent)

, as well as which button was pressed. Since

MouseEvent

inherits from

InputEvent

, you can also check for things like alt-down or ctrl-down using the methods

isAltDown ()

,

isControlDown ()

, etc. This should allow you to do what you want.

Hope this helps,
MarsChelios

 

[Cruisy]

You can check if the right mouse button was clicked.
here is the code for checking this:


if ((m.getModifiers() & InputEvent.BUTTON3_MASK)== InputEvent.BUTTON3_MASK)
{

....

}

the InputEvent.BUTTON3_MASK is static from the package java.awt.event

m stands for the mouseEvent

greetz Cruisy

 

[Targol]

hey, Bos, are you still alive ???
Did theses hints helped ??? Water is not bad as soon as it stays out human body ;-)

 

[bos]

Sorry about that. I was out for awhile and I assumed that the initial responses to my post were the final word on the subject. You were all helpful in your posts; however I have to admit that what I know in java is self-taught so I am a little unfamiliar with mouselisteners. I've taken the code of the program I'm writing and cut out what I deem are the unnecessary parts. I was wondering if one of you could give me an example based off my current code on how to implement the mouselisteners you mentioned. The array of buttons I want to listen for mouse actions is right under the //*********************** segment of the program and is called treevg[]. Currently they have an actionlistener because of my inexperience with mouselisteners. If you need the whole code, I can send it later.


Here it is, and go easy on me:

import java.awt.*;
import javax.swing.*;
import java.awt.event.*;
import java.awt.geom.*;
import javax.swing.border.*;
import java.io.*;
import javax.swing.filechooser.*;

public class ims3 extends JFrame {



public ims3() {
super("Testing"
setSize (970, 715);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
final Container pane = getContentPane();



for (vgcreateint=1; vgcreateint<=32; vgcreateint++) {
treevg[vgcreateint] = new JButton(emptyvg);
treevg[vgcreateint].setBounds(20, 40+(36*(vgcreateint-1)), 50, 36);
treevg[vgcreateint].setBackground(new Color(250, 250, 250));
treevg[vgcreateint].setBorder(BorderFactory.createEmptyBorder());
treelabel[vgcreateint] = new JButton(&quot;Volume Group &quot;+vgcreateint);
treelabel[vgcreateint].setBounds(54, 40+(36*(vgcreateint-1)), 140, 36);
treelabel[vgcreateint].setBackground(new Color(250, 250, 250));
treelabel[vgcreateint].setBorder(BorderFactory.createEmptyBorder());
final int vgcreateint2=vgcreateint;
//*************************************************************//
treevg[vgcreateint].addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent w) {
currentvg=vgcreateint2;
for (vgcreateint3=1; vgcreateint3<=32; vgcreateint3++) {
treevg[vgcreateint3].setBackground(new Color(250, 250, 250));
treelabel[vgcreateint3].setBackground(new Color(250, 250, 250));
treearray.setBackground(new Color(250, 250, 250));
}
treevg[vgcreateint2].setBackground(new Color(0, 250, 0));
treelabel[vgcreateint2].setBackground(new Color(0, 250, 0));
if (activepanel==true) {
activepanel=false;
midpanel.remove(midrightb);
midpanel.add(midrighta);
midpanel.add(volumepane);
midpanel.setVisible(false);
midpanel.setVisible(true);
}
volumepanel.removeAll();
volumepanel.add(vgheaderbutton);
for (abc3=1; abc3<=numberofvolumes[vgcreateint2]; abc3++) {
if (numberofvolumes[vgcreateint2] != abc3) {
treevolume[abc3].setIcon(volume);
volumepanel.add(treevolume[abc3]);
volumepanel.add(vollabel[abc3]);
volumepanel.add(vollabel2[abc3]);
}
else
{
treevolume[abc3].setIcon(volumeend);
volumepanel.add(treevolume[abc3]);
volumepanel.add(vollabel[abc3]);
volumepanel.add(vollabel2[abc3]);
}
}
volumepanel.setVisible(false);
volumepanel.setVisible(true);
volumepanel.setPreferredSize(new Dimension(220, (50+(46*numberofvolumes[vgcreateint2]))));
}
});
treelabel[vgcreateint].addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
currentvg=vgcreateint2;
for (vgcreateint3=1; vgcreateint3<=32; vgcreateint3++) {
treevg[vgcreateint3].setBackground(new Color(250, 250, 250));
treelabel[vgcreateint3].setBackground(new Color(250, 250, 250));
treearray.setBackground(new Color(250, 250, 250));
}
treevg[vgcreateint2].setBackground(new Color(0, 250, 0));
treelabel[vgcreateint2].setBackground(new Color(0, 250, 0));
if (activepanel==true) {
activepanel=false;
midpanel.remove(midrightb);
midpanel.add(midrighta);
midpanel.add(volumepane);
midpanel.setVisible(false);
midpanel.setVisible(true);
}
volumepanel.removeAll();
volumepanel.add(vgheaderbutton);
for (abc3=1; abc3<=numberofvolumes[vgcreateint2]; abc3++) {
if (numberofvolumes[vgcreateint2] != abc3) {
treevolume[abc3].setIcon(volume);
volumepanel.add(treevolume[abc3]);
volumepanel.add(vollabel[abc3]);
volumepanel.add(vollabel2[abc3]);
}
else
{
treevolume[abc3].setIcon(volumeend);
volumepanel.add(treevolume[abc3]);
volumepanel.add(vollabel[abc3]);
volumepanel.add(vollabel2[abc3]);
}
}
volumepanel.setVisible(false);
volumepanel.setVisible(true);
volumepanel.setPreferredSize(new Dimension(220, (50+(46*numberofvolumes[vgcreateint2]))));
}
});
}

// ----------------------- Treearray Button ---------------------------------- //

treearray.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
for (vgcreateint3=1; vgcreateint3<=32; vgcreateint3++) {
treevg[vgcreateint3].setBackground(new Color(250, 250, 250));
treelabel[vgcreateint3].setBackground(new Color(250, 250, 250));
}
treearray.setBackground(new Color(0, 250, 0));
if (activepanel==false) {
activepanel=true;
midpanel.remove(midrighta);
midpanel.remove(volumepane);
midpanel.add(midrightb);

midpanel.setVisible(false);
midpanel.setVisible(true);
}
}
});

// ------------------------ arrayvolnum Button --------------------------------- //

arrayvolnum.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
for (abc=1; abc<=vgcount; abc++) {
numberofvolumes[abc]=Integer.parseInt(&quot;0&quot; + arrayvolnumfield.getText());
if (numberofvolumes[abc]>=1) {
if (abc != vgcount) {
treevg[abc].setIcon(vgit);
} else {
treevg[abc].setIcon(vgendit);
}
} else {
if (abc != vgcount) {
treevg[abc].setIcon(emptyvg);
} else {
treevg[abc].setIcon(emptyvgend);
}
}
}

}
});



setVisible(true);
}

public static void main(String[] arguments) {
ims3 imthree = new ims3();

}
}