// **********************************************************************
//
// <copyright>
//
// BBN Technologies
// 10 Moulton Street
// Cambridge, MA 02138
// (617) 873-8000
//
// Copyright (C) BBNT Solutions LLC. All rights reserved.
//
// </copyright>
// **********************************************************************
//
// $Source:
// /cvs/distapps/openmap/src/openmap/com/bbn/openmap/gui/MiniBrowser.java,v
// $
// $RCSfile: MiniBrowser.java,v $
// $Revision: 1.4.2.1 $
// $Date: 2004/10/14 18:26:53 $
// $Author: dietrick $
//
// **********************************************************************
package com.bbn.openmap.gui;
import java.awt.Frame;
import java.awt.Insets;
import java.awt.GridBagConstraints;
import java.awt.GridBagLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.IOException;
import java.net.MalformedURLException;
import java.net.URL;
import java.util.EmptyStackException;
import java.util.Stack;
import javax.swing.*;
import javax.swing.event.*;
import javax.swing.text.html.HTMLDocument;
import javax.swing.text.html.HTMLFrameHyperlinkEvent;
import com.bbn.openmap.util.Debug;
public class MiniBrowser extends OMComponentPanel implements ActionListener {
JEditorPane jep;
Stack stack;
JButton browserLaunch = null;
JButton backButton = null;
JButton dismissButton = null;
public final static String BackCmd = "back";
public final static String LaunchBrowserCmd = "browser";
public MiniBrowser(String content) {
this("text/html", content);
}
public MiniBrowser(String mimeType, String content) {
this(null, mimeType, content);
}
public MiniBrowser(Frame owner, String mimeType, String content) {
WindowSupport ws = init();
push(mimeType, content);
ws.displayInWindow(owner, 200, 200, 300, 300);
}
public MiniBrowser(URL url) {
this(null, url);
}
public MiniBrowser(Frame owner, URL url) {
WindowSupport ws = init();
push(url);
ws.displayInWindow(owner, 200, 200, 300, 300);
}
protected WindowSupport init() {
stack = new Stack();
GridBagLayout gridbag = new GridBagLayout();
GridBagConstraints c = new GridBagConstraints();
setLayout(gridbag);
// Has to happen before first push
browserLaunch = new JButton("Open in Browser");
URL url = this.getClass().getResource("w.gif");
ImageIcon imageIcon = new ImageIcon(url, "Go back");
backButton = new JButton(imageIcon);
dismissButton = new JButton("Close");
//////
jep = new JEditorPane();
jep.setEditable(false);
jep.addHyperlinkListener(new HyperlinkListener() {
public void hyperlinkUpdate(HyperlinkEvent e) {
if (e.getEventType() == HyperlinkEvent.EventType.ACTIVATED) {
JEditorPane pane = (JEditorPane) e.getSource();
if (e instanceof HTMLFrameHyperlinkEvent) {
Debug.message("minibrowser",
"processing HTMLFrameHyperlinkEvent");
HTMLFrameHyperlinkEvent evt = (HTMLFrameHyperlinkEvent) e;
HTMLDocument doc = (HTMLDocument) pane.getDocument();
doc.processHTMLFrameHyperlinkEvent(evt);
} else {
Debug.message("minibrowser",
"processing HyperlinkEvent");
try {
push(e.getURL());
} catch (Throwable t) {
t.printStackTrace();
}
}
}
}
});
JScrollPane jsp = new JScrollPane(jep, JScrollPane.VERTICAL_SCROLLBAR_AS_NEEDED, JScrollPane.HORIZONTAL_SCROLLBAR_AS_NEEDED);
c.gridwidth = GridBagConstraints.REMAINDER;
c.fill = GridBagConstraints.BOTH;
c.anchor = GridBagConstraints.NORTHWEST;
c.insets = new Insets(5, 5, 5, 5);
c.weightx = 1;
c.weighty = 1;
gridbag.setConstraints(jsp, c);
add(jsp);
JPanel buttonPanel = new JPanel();
GridBagLayout gridbag2 = new GridBagLayout();
GridBagConstraints c2 = new GridBagConstraints();
buttonPanel.setLayout(gridbag2);
c2.fill = GridBagConstraints.NONE;
c2.anchor = GridBagConstraints.WEST;
c2.weightx = 0;
c2.weighty = 0;
backButton.setActionCommand(BackCmd);
backButton.addActionListener(this);
backButton.setEnabled(false);
gridbag2.setConstraints(backButton, c2);
buttonPanel.add(backButton);
browserLaunch.setActionCommand(LaunchBrowserCmd);
browserLaunch.addActionListener(this);
browserLaunch.setVisible(false);
gridbag2.setConstraints(browserLaunch, c2);
buttonPanel.add(browserLaunch);
WindowSupport ws = new WindowSupport(this, "");
c2.anchor = GridBagConstraints.EAST;
c2.weightx = 1;
dismissButton.setActionCommand(WindowSupport.KillWindowCmd);
dismissButton.addActionListener(ws);
gridbag2.setConstraints(dismissButton, c2);
buttonPanel.add(dismissButton);
////////////
c.fill = GridBagConstraints.HORIZONTAL;
c.anchor = GridBagConstraints.WEST;
c.weightx = 1;
c.weighty = 0;
c.gridy = 1;
gridbag.setConstraints(buttonPanel, c);
add(buttonPanel);
// Call displayInWindow on this.
return ws;
}
public void actionPerformed(ActionEvent ae) {
String command = ae.getActionCommand();
try {
if (command == BackCmd) {
stack.pop();
((MiniBrowserPage) stack.peek()).loadInto(jep);
if (stack.size() <= 1) {
backButton.setEnabled(false);
}
} else if (command == LaunchBrowserCmd) {
((MiniBrowserPage) stack.peek()).launchInBrowser();
}
} catch (EmptyStackException ese) {
backButton.setEnabled(false);
} catch (IOException ioe) {
}
}
protected void push(URL newPage) {
Debug.message("minibrowser", "push(URL)");
push(new MiniBrowserPage(newPage));
}
protected void push(String mimeType, String content) {
Debug.message("minibrowser", "push(String)");
push(new MiniBrowserPage(mimeType, content));
}
protected void push(MiniBrowserPage mbp) {
try {
mbp.loadInto(jep);
stack.push(mbp);
if (stack.size() > 1) {
backButton.setEnabled(true);
}
} catch (IOException ioe) {
}
}
protected void enableBrowserLaunch(boolean set) {
browserLaunch.setVisible(set);
invalidate();
}
protected void finalize() {
Debug.message("minibrowser", "MiniBrowser getting gc'd");
}
public static void display(String content) {
display("text/html", content);
}
public static void display(String mimeType, String content) {
display(null, mimeType, content);
}
public static void display(Frame owner, String mimeType, String content) {
new MiniBrowser(owner, mimeType, content);
}
public static void display(URL url) {
display(null, url);
}
public static void display(Frame owner, URL url) {
new MiniBrowser(owner, url);
}
public static void main(String[] argv) {
if (argv.length > 0) {
try {
new MiniBrowser(new URL(argv[0]));
} catch (MalformedURLException murle) {
new MiniBrowser("text/html", argv[0]);
}
} else {
new MiniBrowser("text/html", "String link to the <a href=\"http://openmap.bbn.com\">OpenMap</a> web site");
}
}
public class MiniBrowserPage {
String content = null;
String mimeType = null;
URL url = null;
public MiniBrowserPage(String mt, String stuff) {
mimeType = mt;
content = stuff;
}
public MiniBrowserPage(URL page) {
url = page;
}
public void loadInto(JEditorPane jep) throws IOException {
if (isURL()) {
Debug.message("minibrowser", "loadInto(URL)");
jep.setPage(url);
enableBrowserLaunch(true);
jep.updateUI();
} else {
Debug.message("minibrowser", "loadInto(String)");
jep.setContentType(mimeType);
jep.setText(content);
enableBrowserLaunch(false);
jep.updateUI();
}
}
public void launchInBrowser() {
try {
if (isURL())
edu.stanford.ejalbert.BrowserLauncher.openURL(url.toString());
} catch (IOException ioe) {
Debug.error("MiniBrowser caught IOException loading webpage ("
+ url.toString() + ")\n" + ioe.getMessage());
}
}
public boolean isURL() {
return url != null;
}
}
}