/*

 * Copyright (c) 2007, 2016, Oracle and/or its affiliates. All rights reserved.

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * This code is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 only, as

 * published by the Free Software Foundation.

 *

 * This code is distributed in the hope that it will be useful, but WITHOUT

 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

 * or visit www.oracle.com if you need additional information or have any

 * questions.

 */

package com.sun.swingset3.demos;

import java.awt.Color;

import java.awt.Cursor;

import java.awt.Graphics;

import java.awt.Insets;

import java.awt.Rectangle;

import java.awt.event.ActionEvent;

import java.net.URI;

import java.net.URISyntaxException;

import javax.swing.AbstractAction;

import javax.swing.Action;

import javax.swing.ButtonModel;

import javax.swing.Icon;

import javax.swing.JButton;

import javax.swing.SwingUtilities;

import javax.swing.UIManager;

/**

 *

 * @author aim

 */

//<snip>Create HTML hyperlink

//<snip>Create HTML image hyperlink

public class JHyperlink extends JButton {

    private static final BrowseAction defaultBrowseAction = new BrowseAction();

    private URI targetURI;

    private boolean visited;

    private final transient Rectangle viewRect = new Rectangle();

    private final transient Rectangle iconRect = new Rectangle();

    private final transient Rectangle textRect = new Rectangle();

    //remind(aim): lookup colors instead of hardcoding them

    private Color normalForeground;

    private Color activeForeground;

    private Color visitedForeground;

    private boolean drawUnderline = true;

    static {

        UIManager.put("Hyperlink.foreground", Color.blue);

        UIManager.put("Hyperlink.activeForeground", Color.red);

        UIManager.put("Hyperlink.visitedForeground", new Color(85, 145, 90));

    }

    /**

     * Creates a new instance of JHyperlink

     */

    public JHyperlink() {

        super();

        normalForeground = UIManager.getColor("Hyperlink.foreground");

        activeForeground = UIManager.getColor("Hyperlink.activeForeground");

        visitedForeground = UIManager.getColor("Hyperlink.visitedForeground");

        setBorderPainted(false);

        setContentAreaFilled(false);

        setForeground(normalForeground);

        setCursor(Cursor.getPredefinedCursor(Cursor.HAND_CURSOR));

        setMargin(new Insets(0, 0, 0, 0));

        setAction(defaultBrowseAction);

    }

    /**

     * Creates a new instance of JHyperlink

     */

    public JHyperlink(String text) {

        this();

        setText(text); // override the inheritence of the action's name

    }

    public JHyperlink(String text, String targetURI) throws URISyntaxException {

        this(text, new URI(targetURI));

    }

    public JHyperlink(String text, URI target) {

        this(text);

        setTarget(target);

    }

    public JHyperlink(String text, Action action) {

        this(text);

        setAction(action); // replaces default browse action

        setText(text); // override the inheritence of the action's name

    }

    public JHyperlink(String text, Icon icon) {

        this(text);

        setIcon(icon);

    }

    public JHyperlink(Icon icon, String targetURI) throws URISyntaxException {

        this(null, icon, targetURI);

    }

    public JHyperlink(String text, Icon icon, String targetURI) throws URISyntaxException {

        this(text, new URI(targetURI));

        setIcon(icon);

    }

    public JHyperlink(String text, Icon icon, URI target) {

        this(text);

        setIcon(icon);

        setTarget(target);

    }

    public void setTarget(URI target) {

        this.targetURI = target;

        setToolTipText(target.toASCIIString());

    }

    public URI getTarget() {

        return targetURI;

    }

    public void setVisited(boolean visited) {

        this.visited = visited;

    }

    public boolean isVisited() {

        return visited;

    }

    @Override

    public void setForeground(Color foreground) {

        normalForeground = foreground;

        super.setForeground(foreground);

    }

    public void setVisitedForeground(Color visited) {

        visitedForeground = visited;

    }

    public void setDrawUnderline(boolean drawUnderline) {

        this.drawUnderline = drawUnderline;

    }

    public boolean getDrawUnderline() {

        return drawUnderline;

    }

    @Override

    protected void paintComponent(Graphics g) {

        // Set the foreground on the fly to ensure the text is painted

        // with the proper color in super.paintComponent

        ButtonModel model = getModel();

        if (model.isArmed()) {

            super.setForeground(activeForeground);

        } else if (visited) {

            super.setForeground(visitedForeground);

        } else {

            super.setForeground(normalForeground);

        }

        super.paintComponent(g);

        if (drawUnderline) {

            Insets insets = getInsets();

            viewRect.x = insets.left;

            viewRect.y = insets.top;

            viewRect.width = getWidth() - insets.left - insets.right;

            viewRect.height = getHeight() - insets.top - insets.bottom;

            int baseline = getBaseline(viewRect.width, viewRect.height);

            iconRect.x = iconRect.y = iconRect.width = iconRect.height = 0;

            textRect.x = textRect.y = textRect.width = textRect.height = 0;

            SwingUtilities.layoutCompoundLabel(g.getFontMetrics(), getText(),

                    getIcon(), getVerticalAlignment(), getHorizontalAlignment(),

                    getVerticalTextPosition(), getHorizontalTextPosition(),

                    viewRect, iconRect, textRect, getIconTextGap());

            // getBaseline not returning correct results, so workaround for now

            if (UIManager.getLookAndFeel().getName().equals("Nimbus")) {

                baseline += 7;

            } else {

                baseline += 3;

            }

            g.setColor(getForeground());

            g.drawLine(textRect.x,

                    baseline,

                    textRect.x + textRect.width,

                    baseline);

        }

    }

    // This action is stateless and hence can be shared across hyperlinks

    private static class BrowseAction extends AbstractAction {

        public BrowseAction() {

            super();

        }

        @Override

        public void actionPerformed(ActionEvent e) {

            JHyperlink hyperlink = (JHyperlink) e.getSource();

            URI targetURI = hyperlink.getTarget();

            if (targetURI != null) {

                try {

                    DemoUtilities.browse(targetURI);

                    hyperlink.setVisited(true);

                } catch (Exception ex) {

                    ex.printStackTrace();

                    System.err.println(ex);

                }

            }

        }

    }

//</snip>

//</snip>

}