Pass JButton to Utility class. Acceptable?

问题

I have a JFrame that does things. I have a JButton hidden from view in that JFrame. In a SwingWorker i have a utility Class such as checkNDownloadFile of which I pass a JButton to it. So it can make it visible/usable when the process completes.

My question is, is this acceptable. I dont know of any other method to do this effect. (Keep in mind the checkNDownloadFile class is all static. Its only needed/ran once.)

Sudo Code

-----------------------------------------------------------------
myWorker Class

protected Void doInBackground() throws Exception {

    //Loading time consuming data.
    //Execute Dialog of the question variety.
    //Loading more time consuming data.

    //Create JFrame
    AtomFrame frame = new AtomFrame();
    frame.start();

    checkNDownloadFile.setButton(frame.fileButton)
    checkNDownloadFile.start();
    return null;
}

-----------------------------------------------------------------
checkNDownloadFile Class

public static void start() {
    //Do the other task at hand
    if (complete && good) {
        fileButton.setVisible(true);
    } else {
        //other stuff
    }
}

Answer Code

-----------------------------------------------------------------
myWorker Class

protected Void doInBackground() throws Exception {

    //Loading time consuming data.
    //Execute Dialog of the question variety.
    //Loading more time consuming data.

    //Create JFrame
    //Moved to Main Method to be created by EDT.
    //AtomFrame frame = new AtomFrame();
    //frame.start();

    publish("Executing");
    boolean returnedB = checkNDownloadFile.start();
    if (returnedB) {
        publish("Good");
    } else {
        //Maybe implement
        //checkNDownloadFile.getError();
        publish("Bad");
    }
    return null;
}

-----------------------------------------------------------------
checkNDownloadFile Class

public static void start() {
    //Do the other task at hand
    if (complete && good) {
        return true
    } else {
        //Maybe implement
        //setError("");
        return false
    }
}

回答1:

Do not update the GUI from your implementation of doInBackground().
Do update the GUI from your implementation of process() or done(), as shown here, and here.
You may have to re-factor your checkNDownloadFile() method to provide the desired granularity for a sensible progress display.
See also Watching a Directory for Changes.

来源：https://stackoverflow.com/questions/23028825/pass-jbutton-to-utility-class-acceptable

标签

java

swing

static

jframe

jbutton