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com.atomikos.swing.HtmlFrame Maven / Gradle / Ivy
/**
* Copyright (C) 2000-2010 Atomikos
*
* This code ("Atomikos TransactionsEssentials"), by itself,
* is being distributed under the
* Apache License, Version 2.0 ("License"), a copy of which may be found at
* http://www.atomikos.com/licenses/apache-license-2.0.txt .
* You may not use this file except in compliance with the License.
*
* While the License grants certain patent license rights,
* those patent license rights only extend to the use of
* Atomikos TransactionsEssentials by itself.
*
* This code (Atomikos TransactionsEssentials) contains certain interfaces
* in package (namespace) com.atomikos.icatch
* (including com.atomikos.icatch.Participant) which, if implemented, may
* infringe one or more patents held by Atomikos.
* It should be appreciated that you may NOT implement such interfaces;
* licensing to implement these interfaces must be obtained separately from Atomikos.
*
* 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.
*/
package com.atomikos.swing;
import java.awt.BorderLayout;
import java.awt.Cursor;
import java.awt.Dimension;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import java.io.IOException;
import java.net.URL;
import java.util.Stack;
import javax.swing.ImageIcon;
import javax.swing.JButton;
import javax.swing.JDialog;
import javax.swing.JEditorPane;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.event.HyperlinkEvent;
import javax.swing.event.HyperlinkListener;
/**
*
*
*A frame to display an HTML document, and respond to clicks on
*hyperlinks by loading the clicked link.
*/
public class HtmlFrame
implements HyperlinkListener, ActionListener
{
private JFrame win_;
//the window to display in
private JEditorPane pane_;
//the editor pane to load URLs
private Stack stack_;
//to go back
private JButton back_;
private URL lastUrl_;
//added to stack on new load
private JDialog dialog_;
//null if not dialog mode.
/**
*Creates a new window that displays the given URL.
*
*@param url The URL to load.
*@param parent If in dialog mode, this indicates which parent.
*Null means a standalone app.
*This determines the behaviour for closing the window.
*/
public HtmlFrame ( URL url , JFrame parent ) throws IOException
{
pane_ = new JEditorPane();
JScrollPane scrollpane = new JScrollPane ( pane_ );
pane_.setEditable ( false );
pane_.setPage ( url );
pane_.addHyperlinkListener ( this );
ImageIcon backImageIcon = new ImageIcon (
this.getClass().getResource ( "/toolbarButtonGraphics/navigation/Back24.gif" ));
back_ = new JButton ( backImageIcon );
back_.setEnabled ( false );
back_.addActionListener ( this );
JPanel panel = new JPanel ();
panel.add ( back_ );
// if ( !standalone )
// win_.setDefaultCloseOperation ( WindowConstants.DISPOSE_ON_CLOSE );
//
stack_ = new Stack();
lastUrl_ = url;
if ( parent == null ) {
win_ = new JFrame ( "HtmlViewer" );
win_.getContentPane().setLayout ( new BorderLayout () );
win_.getContentPane().add ( scrollpane , BorderLayout.CENTER );
win_.getContentPane().add ( panel, BorderLayout.NORTH );
win_.addWindowListener ( new WindowAdapter () {
public void windowClosing ( WindowEvent e ) {
System.exit ( 0 );
}
} );
Dimension defaultSize = new Dimension ( 600, 700 );
win_.setSize ( defaultSize );
win_.setVisible ( true );
}
else {
//pop up in dialog box
win_ = parent; //to make wait cursor work!
JPanel pane = new JPanel();
pane.setLayout ( new BorderLayout() );
pane.add ( scrollpane, BorderLayout.CENTER );
pane.add ( panel , BorderLayout.NORTH );
pane.setSize ( new Dimension ( 500, 500 ) );
final JDialog dialog = new JDialog ( parent, "HtmlViewer" , true );
//dialog.setContentPane ( optionPane );
dialog.setContentPane ( pane );
//dialog.setSize ( new Dimension ( 800, 900) );
//dialog.getContentPane().setSize ( new Dimension ( 500, 500 )) ;
dialog.pack();
dialog.setSize ( new Dimension ( 500, 500 ) );
dialog.setVisible ( true );
dialog_ = dialog;
//JOptionPane.showMessageDialog ( parent , pane ,
// "URLViewer" , JOptionPane.PLAIN_MESSAGE );
}
}
private void setWaitCursor ( boolean wait )
{
Cursor cursor = null;
if ( wait )
cursor = Cursor.getPredefinedCursor ( Cursor.WAIT_CURSOR );
else
cursor = Cursor.getPredefinedCursor ( Cursor.DEFAULT_CURSOR );
if ( dialog_ != null )
dialog_.getContentPane().setCursor ( cursor );
else
win_.getContentPane().setCursor( cursor );
}
private void load ( URL url , boolean addToStack )
{
try {
setWaitCursor ( true );
pane_.setPage ( url );
//System.err.println ( "Loading: " + url );
if ( addToStack ) {
stack_.push ( lastUrl_ );
back_.setEnabled ( true );
}
lastUrl_ = url;
}
catch ( IOException err ) {
System.err.println ( "Bad URL: " + url );
}
finally {
setWaitCursor ( false );
}
}
/**
*@see HyperlinkListener
*/
public void hyperlinkUpdate ( HyperlinkEvent e )
{
JEditorPane pane = ( JEditorPane ) e.getSource();
if ( e.getEventType() == HyperlinkEvent.EventType.ACTIVATED ) {
URL url = e.getURL();
load ( url, true );
}
}
/**
*@see ActionListener
*/
public void actionPerformed ( ActionEvent e )
{
if ( e.getSource() == back_ ) {
load ( ( URL ) stack_.pop() , false );
if ( stack_.empty() )
back_.setEnabled ( false );
}
}
/**
*Allows simple retrieval of command-line URL
*/
public static void main ( String[] args )
{
if ( args.length !=1 ) {
System.err.println ( "Usage: specify the URL to load" );
System.exit ( 1 );
}
try {
HtmlFrame frame = new HtmlFrame ( new URL ( args [0] ) , null );
}
catch ( Exception e ) {
e.printStackTrace();
}
}
}
