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JIDE Common Layer (Professional Swing Components)

There is a newer version: 3.6.18

/*
 * @(#)MultilineLabel.java
 *
 * Copyright 2002 JIDE Software. All rights reserved.
 */
package com.jidesoft.swing;

import javax.swing.*;
import javax.swing.plaf.UIResource;
import javax.swing.text.DefaultCaret;
import java.awt.*;

/**
 * Normal JLabel cannot have multiple lines. If you want to multiple label, you can use this class.
 */
public class MultilineLabel extends JTextArea {
    public MultilineLabel() {
        initComponents();
    }

    public MultilineLabel(String s) {
        super(s);
        initComponents();
    }

    private void initComponents() {
        adjustUI();
    }

    /**
     * Reloads the pluggable UI.  The key used to fetch the new interface is getUIClassID().  The type of
     * the UI is TextUI.  invalidate is called after setting the UI.
     */
    @Override
    public void updateUI() {
        super.updateUI();
        adjustUI();
    }

    /**
     * Adjusts UI to make sure it looks like a label instead of a text area.
     */
    protected void adjustUI() {
        setLineWrap(true);
        setWrapStyleWord(true);
        setEditable(false);
        setRequestFocusEnabled(false);
        setFocusable(false);
        JideSwingUtilities.setComponentTransparent(this);

        setCaret(new DefaultCaret() {
            private static final long serialVersionUID = 1242467463492127346L;

            @Override
            protected void adjustVisibility(Rectangle nloc) {
            }
        });

        LookAndFeel.installBorder(this, "Label.border");
        Color fg = getForeground();
        if (fg == null || fg instanceof UIResource) {
            setForeground(UIManager.getColor("Label.foreground"));
        }
        Font f = getFont();
        if (f == null || f instanceof UIResource) {
            setFont(UIManager.getFont("Label.font"));
        }
        setBackground(null);
    }

    /**
     * Overrides getMinimumSize to return getPreferredSize() instead. We did this because of a
     * bug at http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=4824261.
     *
     * @return new Dimension(1, 1).
     */
    @Override
    public Dimension getMinimumSize() {
        return getPreferredSize();
    }
}