package test;
import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Dimension;
import java.awt.Rectangle;
import java.io.File;
import java.io.IOException;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.swing.*;
import javax.swing.text.html.HTMLEditorKit;
import static org.autoplot.datasource.DataSetURI.getFile;
import org.das2.util.FileUtil;
import org.das2.util.monitor.NullProgressMonitor;
/**
* I found this example where html content is properly displayed within
* a scrollpane. The pop-up documentation is wide and requires
* horizontal scrolling, which is awkward.
*
* @author jbf
*/
public class TestScroll {
public static void main(String[] args)
{
SwingUtilities.invokeLater(new Runnable()
{
public void run()
{
// now add it all to a frame
JFrame j = new JFrame("Test");
WorkBench right = new WorkBench();
JScrollPane sp = new JScrollPane(JScrollPane.VERTICAL_SCROLLBAR_AS_NEEDED, JScrollPane.HORIZONTAL_SCROLLBAR_NEVER);
sp.setAutoscrolls(false);
sp.setViewportView(right);
j.getContentPane().add(sp, BorderLayout.CENTER);
right.addPortal(getPortal());
right.addPortal(getPortal());
right.addPortal(getPortal());
right.addPortal(getPortal());
right.addPortal(getPortal());
right.addPortal(getPortal());
right.addPortal(getPortal());
right.addPortal(getPortal());
right.addPortal(getPortal());
SwingUtilities.invokeLater(new Runnable() {
public void run() {
sp.getViewport().setViewPosition(new java.awt.Point(0, 0));
}
});
// center the jframe, then make it visible
j.setSize(800, 600);
j.setLocationRelativeTo(null);
j.setVisible(true);
}
});
}
public static JPanel getPortal() {
JEditorPane swingbox = new JEditorPane();
swingbox.setEditorKit(new HTMLEditorKit());
swingbox.setOpaque(true);
swingbox.setContentType("text/html");
String htmlString = "\n"
+ "\n"
+ "Welcomfve! sdsdsdsdsd sdsdsd sdsd sdsd sdsd
\n"
+ "This is an H2 header. sdsdsdsdsd sdsdsd sdsd sdsd sdsd
\n"
+ "This is some sample text sdsdsdsdsd sdsdsd sdsd sdsd sdsd
\n"
+ "devdaily blog
\n"
+ "\n";
// below we see that loading the Javadocs breaks this code, and doesn't do the wrapping properly.
File f;
try {
f = getFile( "http://www-pw.physics.uiowa.edu/~jbf/autoplot/javadoc2018/org/das2/qds/ops/Ops.html", true, new NullProgressMonitor() );
htmlString= FileUtil.readFileToString(f);
} catch (IOException ex) {
Logger.getLogger(TestScroll.class.getName()).log(Level.SEVERE, null, ex);
}
swingbox.setText(htmlString);
swingbox.setBackground(Color.WHITE);
JPanel p = new JPanel(new BorderLayout());
p.setBackground(Color.WHITE);
JLabel title = new JLabel("Heading " );
title.setBackground(Color.WHITE);
p.add(title, BorderLayout.NORTH);
p.add(swingbox, BorderLayout.CENTER);
return p;
}
public static class WorkBench extends JPanel implements Scrollable
{
Box vertical_box = null;
public WorkBench()
{
setLayout(new BorderLayout());
this.vertical_box = Box.createVerticalBox();
//** Scenario A - no vertical scrolling **
add(this.vertical_box , BorderLayout.CENTER);
//** Scenario B - no line wrapping **
//JScrollPane sp = new JScrollPane(current );
//sp.setViewportView(current );
//add(sp, BorderLayout.CENTER);
}
public void addPortal(JPanel portal)
{
this.vertical_box.add(portal);
validate();
}
@Override
public Dimension getPreferredScrollableViewportSize()
{
return getPreferredSize();
}
@Override
public int getScrollableUnitIncrement(
Rectangle visibleRect,
int orientation,
int direction)
{
return 20;
}
@Override
public int getScrollableBlockIncrement(
Rectangle visibleRect,
int orientation,
int direction)
{
return 60;
}
@Override
public boolean getScrollableTracksViewportWidth()
{
return true;
}
@Override
public boolean getScrollableTracksViewportHeight()
{
if (getParent() instanceof JViewport)
{
return (((JViewport)getParent()).getHeight() > getPreferredSize().height);
}
return false;
}
}
}