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An improved native Swing look and feel for macOS

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/*
 * Copyright (c) 2014 Alan Snyder.
 * All rights reserved.
 *
 * You may not use, copy or modify this file, except in compliance with the license agreement. For details see
 * accompanying license terms.
 */

package org.violetlib.aqua.fc;

import javax.swing.*;
import javax.swing.event.ChangeEvent;
import javax.swing.event.ChangeListener;

/**
 * A control that allows the user to select a view mode for the file chooser.
 */
public abstract class ViewModeControl extends JPanel {

    public final static int ICON_VIEW = 0;
    public final static int LIST_VIEW = 1;
    public final static int COLUMN_VIEW = 2;
    public final static int FLOW_VIEW = 3;

    private ChangeListener changeListener;
    private ChangeEvent changeEvent = new ChangeEvent(this);

    public static ViewModeControl create() {
        return new ViewModeControlImpl();
    }

    public abstract void setSelectedViewMode(int mode);

    public abstract int getSelectedViewMode();

    public void addChangeListener(ChangeListener l) {
        changeListener = l;
    }

    protected void selectedViewModeChanged() {
        if (changeListener != null) {
            changeListener.stateChanged(changeEvent);
        }
    }
}