// $Header: /home/cvs/jakarta-jmeter/src/htmlparser/org/htmlparser/beans/BeanyBaby.java,v 1.2 2004/02/10 13:41:09 woolfel Exp $
/*
 * ====================================================================
 * Copyright 2002-2004 The Apache Software Foundation.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 * 
 */

// The developers of JMeter and Apache are greatful to the developers
// of HTMLParser for giving Apache Software Foundation a non-exclusive
// license. The performance benefits of HTMLParser are clear and the
// users of JMeter will benefit from the hard work the HTMLParser
// team. For detailed information about HTMLParser, the project is
// hosted on sourceforge at http://htmlparser.sourceforge.net/.
//
// HTMLParser was originally created by Somik Raha in 2000. Since then
// a healthy community of users has formed and helped refine the
// design so that it is able to tackle the difficult task of parsing
// dirty HTML. Derrick Oswald is the current lead developer and was kind
// enough to assist JMeter.

package org.htmlparser.beans;

import javax.swing.JCheckBoxMenuItem;
import javax.swing.JMenuItem;

/**
 * Demo of beans.
 * Created on December 30, 2002, 7:54 PM
 * @author Derrick Oswald
 */
public class BeanyBaby
    extends javax.swing.JFrame
    implements
        java.beans.PropertyChangeListener,
        java.awt.event.ActionListener,
        java.awt.event.MouseListener
{
    /**
     * Bread crumb trail of visited URLs.
     */
    java.util.Vector mTrail;

    /**
     * Current position on the bread crumb trail.
     */
    int mCrumb;

    /** Creates new form BeanyBaby */
    public BeanyBaby()
    {
        initComponents();
        mTrail = new java.util.Vector(25);
        mCrumb = -1;

        // shenanigans to get the splitter bar at the midpoint
        show();
        mSplitPane.setDividerLocation(0.5);
        hide();

        // set up twinning
        mLinkBean.addPropertyChangeListener(this);
        mStringBean.addPropertyChangeListener(this);
        // set up user input
        mTextField.addActionListener(this);
        mLinkBean.addMouseListener(this);

        // set initial checkbox states
        mLinks.setSelected(mStringBean.getLinks());
        mCollapse.setSelected(mStringBean.getCollapse());
        mNobreak.setSelected(mStringBean.getReplaceNonBreakingSpaces());
    }

    //
    // PropertyChangeListener interface
    //

    /**
     * This method ties the two beans together on the same connection.
     * Whenever a property changes on one bean, make sure the URL properties
     * agree by setting the connection from one to the other.
     * @param event The event describing the event source
     * and the property that has changed.
     */
    public void propertyChange(java.beans.PropertyChangeEvent event)
    {
        Object source;
        String name;

        source = event.getSource();
        if (source == mLinkBean)
        {
            if (!mLinkBean.getURL().equals(mStringBean.getURL()))
                mStringBean.setConnection(mLinkBean.getConnection());
        }
        else if (source == mStringBean)
        {
            if (!mStringBean.getURL().equals(mLinkBean.getURL()))
                mLinkBean.setConnection(mStringBean.getConnection());
            // check for menu status changes
            name = event.getPropertyName();
            if (name.equals(StringBean.PROP_LINKS_PROPERTY))
                mLinks.setSelected(
                    ((Boolean) event.getNewValue()).booleanValue());
            else if (name.equals(StringBean.PROP_COLLAPSE_PROPERTY))
                mCollapse.setSelected(
                    ((Boolean) event.getNewValue()).booleanValue());
            else if (name.equals(StringBean.PROP_REPLACE_SPACE_PROPERTY))
                mNobreak.setSelected(
                    ((Boolean) event.getNewValue()).booleanValue());
        }
    }

    //
    // ActionListener interface
    //

    public void actionPerformed(java.awt.event.ActionEvent event)
    {
        Object source;
        String url;
        String name;
        JMenuItem item;

        source = event.getSource();
        if (source == mTextField)
        {
            url = mTextField.getText();
            mTextField.selectAll();
            setURL(url);
        }
        else if (source instanceof JCheckBoxMenuItem)
        {
            item = (JMenuItem) source;
            name = item.getName();
            if ("Links".equals(name))
                mStringBean.setLinks(item.isSelected());
            else if ("Collapse".equals(name))
                mStringBean.setCollapse(item.isSelected());
            else if ("Nobreak".equals(name))
                mStringBean.setReplaceNonBreakingSpaces(item.isSelected());
        }
        else if (source instanceof JMenuItem)
        {
            name = ((JMenuItem) source).getName();
            if ("Back".equals(name))
            {
                if (mCrumb > 0)
                {
                    mCrumb--;
                    url = (String) mTrail.elementAt(mCrumb);
                    mCrumb--;
                    setURL(url);
                }
            }
            else if ("Forward".equals(name))
            {
                if (mCrumb < mTrail.size())
                {
                    mCrumb++;
                    url = (String) mTrail.elementAt(mCrumb);
                    mCrumb--;
                    setURL(url);
                }
            }
        }

    }

    //
    // MouseListener interface
    //
    /**
     * Invoked when the mouse button has been clicked (pressed and released) on a component.
     */
    public void mouseClicked(java.awt.event.MouseEvent event)
    {
        int index;
        String url;

        if (2 == event.getClickCount())
        {
            index = mLinkBean.locationToIndex(event.getPoint());
            url = mLinkBean.getModel().getElementAt(index).toString();
            setURL(url);
        }
    }

    /**
     * Invoked when the mouse enters a component.
     */
    public void mouseEntered(java.awt.event.MouseEvent event)
    {
    }

    /**
     * Invoked when the mouse exits a component.
     */
    public void mouseExited(java.awt.event.MouseEvent event)
    {
    }

    /**
     * Invoked when a mouse button has been pressed on a component.
     */
    public void mousePressed(java.awt.event.MouseEvent event)
    {
    }

    /**
     * Invoked when a mouse button has been released on a component.
     */
    public void mouseReleased(java.awt.event.MouseEvent event)
    {
    }

    //
    // API control
    //
    public void setURL(String url)
    {
        mTextField.setText(url);
        mCrumb++;
        if (mTrail.size() <= mCrumb)
            mTrail.addElement(url);
        else
            mTrail.setElementAt(url, mCrumb);
        mLinkBean.setURL(url);

        // update navigation menu
        mBack.setEnabled(mCrumb > 0);
        mForward.setEnabled(mCrumb + 1 < mTrail.size());
    }

    /** This method is called from within the constructor to
     * initialize the form.
     * WARNING: Do NOT modify this code. The content of this method is
     * always regenerated by the Form Editor.
     */
    private void initComponents() //GEN-BEGIN:initComponents
    {
        javax.swing.JMenuBar menubar;
        javax.swing.JScrollPane pane1;
        javax.swing.JScrollPane pane2;
        javax.swing.JMenu go;
        javax.swing.JMenu options;
        javax.swing.JPanel panel;

        menubar = new javax.swing.JMenuBar();
        setJMenuBar(menubar);
        go = new javax.swing.JMenu();
        mBack = new javax.swing.JMenuItem();
        mForward = new javax.swing.JMenuItem();
        options = new javax.swing.JMenu();
        mLinks = new javax.swing.JCheckBoxMenuItem();
        mCollapse = new javax.swing.JCheckBoxMenuItem();
        mNobreak = new javax.swing.JCheckBoxMenuItem();
        panel = new javax.swing.JPanel();
        mSplitPane = new javax.swing.JSplitPane();
        pane1 = new javax.swing.JScrollPane();
        mLinkBean = new org.htmlparser.beans.HTMLLinkBean();
        pane2 = new javax.swing.JScrollPane();
        mStringBean = new org.htmlparser.beans.HTMLTextBean();
        mTextField = new javax.swing.JTextField();

        go.setMnemonic('G');
        go.setText("Go");
        go.setToolTipText("crude URL navigation");
        mBack.setMnemonic('B');
        mBack.setText("Back");
        mBack.setToolTipText("back one URL");
        mBack.setName("Back");
        mBack.addActionListener(this);
        go.add(mBack);

        mForward.setMnemonic('F');
        mForward.setText("Forward");
        mForward.setToolTipText("forward one URL");
        mForward.setName("Forward");
        mForward.addActionListener(this);
        go.add(mForward);

        menubar.add(go);

        options.setMnemonic('O');
        options.setText("Options");
        options.setToolTipText("Bean settings");
        mLinks.setMnemonic('L');
        mLinks.setText("Links");
        mLinks.setToolTipText("show/hide links in text");
        mLinks.setName("Links");
        mLinks.addActionListener(this);
        options.add(mLinks);

        mCollapse.setMnemonic('C');
        mCollapse.setText("Collapse");
        mCollapse.setToolTipText("collapse/retain whitespace sequences");
        mCollapse.setName("Collapse");
        mCollapse.addActionListener(this);
        options.add(mCollapse);

        mNobreak.setMnemonic('N');
        mNobreak.setText("Non-breaking Spaces");
        mNobreak.setToolTipText("replace/retain non-breaking spaces");
        mNobreak.setName("Nobreak");
        mNobreak.addActionListener(this);
        options.add(mNobreak);

        menubar.add(options);

        setTitle("BeanyBaby");
        addWindowListener(new java.awt.event.WindowAdapter()
        {
            public void windowClosing(java.awt.event.WindowEvent evt)
            {
                exitForm(evt);
            }
        });

        panel.setLayout(new java.awt.BorderLayout());

        pane1.setViewportView(mLinkBean);

        mSplitPane.setLeftComponent(pane1);

        pane2.setViewportView(mStringBean);

        mSplitPane.setRightComponent(pane2);

        panel.add(mSplitPane, java.awt.BorderLayout.CENTER);

        mTextField.setToolTipText("Enter the URL to view");
        panel.add(mTextField, java.awt.BorderLayout.SOUTH);

        getContentPane().add(panel, java.awt.BorderLayout.CENTER);

        pack();
        java.awt.Dimension screenSize =
            java.awt.Toolkit.getDefaultToolkit().getScreenSize();
        setSize(new java.awt.Dimension(640, 480));
        setLocation(
            (screenSize.width - 640) / 2,
            (screenSize.height - 480) / 2);
    } //GEN-END:initComponents

    /** Exit the Application */
    private void exitForm(java.awt.event.WindowEvent evt)
    {
        //GEN-FIRST:event_exitForm
        System.exit(0);
    } //GEN-LAST:event_exitForm

    // Variables declaration - do not modify//GEN-BEGIN:variables
    private org.htmlparser.beans.HTMLLinkBean mLinkBean;
    private javax.swing.JMenuItem mForward;
    private javax.swing.JMenuItem mBack;
    private javax.swing.JCheckBoxMenuItem mCollapse;
    private javax.swing.JTextField mTextField;
    private javax.swing.JSplitPane mSplitPane;
    private javax.swing.JCheckBoxMenuItem mLinks;
    private org.htmlparser.beans.HTMLTextBean mStringBean;
    private javax.swing.JCheckBoxMenuItem mNobreak;
    // End of variables declaration//GEN-END:variables

    /**
     * Unit test.
     */
    public static void main(String[] args)
    {
        BeanyBaby bb = new BeanyBaby();
        bb.show();
        bb.setURL("http://www.netbeans.org");
    }
}