mirrors in mirrors in JMenu

[willemjav]

Imagine there is a dropdown menu with several color items.
(black, white, red, blue, green and yellow)
Just one color should appear selected (no-color-selected is not a option.
I taught the next code would do it!
(but I believe there is some funny backfiring loop because resetColormenu()
will call itemStateChanged(ItemEvent evt) etc.)
There should be an other way without back looping?

public void itemStateChanged(ItemEvent evt) {
Object source = evt.getSource();
if ( blacktxt.isSelected() ) {
resetColormenu();
blacktxt.setSelected(true);
img[index].infotextcolor = "black";
}
else
if ( whitetxt.isSelected() ) {
resetColormenu();
whitetxt.setSelected(true);
img[index].infotextcolor = "white";
}
else
if ( bluetxt.isSelected() ) {
resetColormenu();
bluetxt.setSelected(true);
img[index].infotextcolor = "blue";
}
else
if ( redtxt.isSelected() ) {
resetColormenu();
redtxt.setSelected(true);
img[index].infotextcolor = "red";
}
else
if ( yellowtxt.isSelected() ) {
resetColormenu();
yellowtxt.setSelected(true);
img[index].infotextcolor = "yellow";
}
else
if ( greentxt.isSelected() ) {
resetColormenu();
greentxt.setSelected(true);
img[index].infotextcolor = "green";
}


}


private void resetColormenu() {
blacktxt.setSelected(false);
whitetxt.setSelected(false);
bluetxt.setSelected(false);
redtxt.setSelected(false);
yellowtxt.setSelected(false);
greentxt.setSelected(false);
}

[willemjav]

okay i found the answer myself
it is called a JRadioButtonMenuItem
thanks to myself
willemjav

[hardwired]

To get the ItemListener to work try:

if(e.getStateChange() == ItemEvent.SELECTED) {
    // your code here...
}

[willemjav]

I actually used this (probably your code is better)

public void actionPerformed(ActionEvent evt) {
Object source = evt.getSource();

//if (durationField==source) { // did not work
String str = durationField.getText(); // read out the duration field fields
img[index].duration = Integer.parseInt(str);


if ( blacktxt.isSelected()) {
img[index].infotextcolor = "black";
}
else
if ( whitetxt.isSelected()) {
img[index].infotextcolor = "white";
}
else

etc

[willemjav]

Hardwired, what´s wrong here (cannot find var. SELECTED)?

public void itemStateChanged(ItemEvent evt) {
int x=0;
String str;
if(evt.getStateChange() == durationField.SELECTED) {
do {
str = durationField.getText();
try {
x = Integer.parseInt(str);
} catch (NumberFormatException ex) {
JOptionPane.showMessageDialog(infoPane,"please type number within range 1-360 + return");
ex.printStackTrace();
}
if (x<1 || x>360) JOptionPane.showMessageDialog(infoPane,"please type number within range 1-360 + return");
} while (x<1 || x>360);
img[index].duration = x;
}
}

[hardwired]

// This is specifying a field "SELECTED" in the "durationField"
// class instance.
durationField.SELECTED
// This is specifying a field "SELECTED" in the ItemEvent class.
// See Field Summary section in ItemEvent api.
ItemEvent.SELECTED