/*
* {{{ header & license
* Copyright (c) 2004 Joshua Marinacci
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public License
* as published by the Free Software Foundation; either version 2.1
* of the License, or (at your option) any later version.
*
* This program 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 Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
* }}}
*/
package org.xhtmlrenderer.demo.browser;
import org.w3c.dom.Document;
import org.xhtmlrenderer.event.DocumentListener;
import org.xhtmlrenderer.layout.SharedContext;
import org.xhtmlrenderer.pdf.ITextRenderer;
import org.xhtmlrenderer.pdf.PDFCreationListener;
import org.xhtmlrenderer.pdf.util.XHtmlMetaToPdfInfoAdapter;
import org.xhtmlrenderer.resource.XMLResource;
import org.xhtmlrenderer.simple.FSScrollPane;
import org.xhtmlrenderer.swing.ImageResourceLoader;
import org.xhtmlrenderer.swing.ScalableXHTMLPanel;
import org.xhtmlrenderer.swing.SwingReplacedElementFactory;
import org.xhtmlrenderer.util.GeneralUtil;
import org.xhtmlrenderer.util.Uu;
import org.xhtmlrenderer.util.XRLog;
import org.xhtmlrenderer.util.XRRuntimeException;
import javax.swing.*;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import java.awt.*;
import java.awt.event.FocusAdapter;
import java.awt.event.FocusEvent;
import java.io.FileOutputStream;
import java.io.OutputStream;
import java.io.StringReader;
import java.io.IOException;
import java.util.logging.Level;
import java.util.logging.Logger;
/**
* Description of the Class
*
* @author empty
*/
public class BrowserPanel extends JPanel implements DocumentListener {
private static final long serialVersionUID = 1L;
/**
* Description of the Field
*/
JButton forward;
/**
* Description of the Field
*/
JButton backward;
/**
* Description of the Field
*/
JButton stop;
/**
* Description of the Field
*/
JButton reload;
/**
* Description of the Field
*/
JButton goHome;
/**
* Description of the Field
*/
JButton font_inc;
/**
* Description of the Field
*/
JButton font_rst;
/**
* Description of the Field
*/
JButton font_dec;
JButton print;
/**
* Description of the Field
*/
JTextField url;
/**
* Description of the Field
*/
BrowserStatus status;
/**
* Description of the Field
*/
public ScalableXHTMLPanel view;
/**
* Description of the Field
*/
JScrollPane scroll;
/**
* Description of the Field
*/
BrowserStartup root;
/**
* Description of the Field
*/
BrowserPanelListener listener;
JButton print_preview;
/**
* Description of the Field
*/
public static final Logger logger = Logger.getLogger("app.browser");
private PanelManager manager;
JButton goToPage;
public JToolBar toolbar;
/**
* Constructor for the BrowserPanel object
*
* @param root PARAM
* @param listener PARAM
*/
public BrowserPanel(BrowserStartup root, BrowserPanelListener listener) {
super();
this.root = root;
this.listener = listener;
}
/**
* Description of the Method
*/
public void init() {
forward = new JButton();
backward = new JButton();
stop = new JButton();
reload = new JButton();
goToPage = new JButton();
goHome = new JButton();
url = new JTextField();
url.addFocusListener(new FocusAdapter() {
public void focusGained(FocusEvent e) {
super.focusGained(e);
url.selectAll();
}
public void focusLost(FocusEvent e) {
super.focusLost(e);
url.select(0, 0);
}
});
manager = new PanelManager();
view = new ScalableXHTMLPanel(manager);
manager.setRepaintListener(view);
ImageResourceLoader irl = new ImageResourceLoader();
irl.setRepaintListener(view);
manager.setImageResourceLoader(irl);
view.getSharedContext().setReplacedElementFactory(new SwingReplacedElementFactory(view, irl));
view.addDocumentListener(manager);
view.setCenteredPagedView(true);
view.setBackground(Color.LIGHT_GRAY);
scroll = new FSScrollPane(view);
print_preview = new JButton();
print = new JButton();
loadCustomFonts();
status = new BrowserStatus();
status.init();
initToolbar();
int text_width = 200;
view.setPreferredSize(new Dimension(text_width, text_width));
setLayout(new BorderLayout());
this.add(scroll, BorderLayout.CENTER);
}
private void initToolbar() {
toolbar = new JToolBar();
toolbar.setRollover(true);
toolbar.add(backward);
toolbar.add(forward);
toolbar.add(reload);
toolbar.add(goHome);
toolbar.add(url);
toolbar.add(goToPage);
// disabled for R6
// toolbar.add(print);
toolbar.setFloatable(false);
}
private void loadCustomFonts() {
SharedContext rc = view.getSharedContext();
try {
rc.setFontMapping("Fuzz", Font.createFont(Font.TRUETYPE_FONT,
new DemoMarker().getClass().getResourceAsStream("/demos/fonts/fuzz.ttf")));
} catch (Exception ex) {
Uu.p(ex);
}
}
/**
* Description of the Method
*/
public void createLayout() {
GridBagLayout gbl = new GridBagLayout();
GridBagConstraints c = new GridBagConstraints();
setLayout(gbl);
c.gridx = 0;
c.gridy = 0;
c.weightx = c.weighty = 0.0;
c.fill = GridBagConstraints.HORIZONTAL;
gbl.setConstraints(toolbar, c);
add(toolbar);
//c.gridx = 0;
c.gridx++;
c.gridy++;
c.weightx = c.weighty = 0.0;
c.insets = new Insets(5, 0, 5, 5);
gbl.setConstraints(backward, c);
add(backward);
c.gridx++;
gbl.setConstraints(forward, c);
add(forward);
c.gridx++;
gbl.setConstraints(reload, c);
add(reload);
c.gridx++;
c.fill = GridBagConstraints.NONE;
c.weightx = c.weighty = 0.0;
gbl.setConstraints(print_preview, c);
add(print_preview);
c.gridx++;
c.fill = GridBagConstraints.HORIZONTAL;
c.ipadx = 5;
c.ipady = 5;
c.weightx = 10.0;
c.insets = new Insets(5, 0, 5, 0);
gbl.setConstraints(url, c);
url.setBorder(BorderFactory.createLoweredBevelBorder());
add(url);
c.gridx++;
c.fill = GridBagConstraints.NONE;
c.weightx = c.weighty = 0.0;
c.insets = new Insets(0, 5, 0, 0);
gbl.setConstraints(goToPage, c);
add(goToPage);
c.gridx = 0;
c.gridy++;
c.ipadx = 0;
c.ipady = 0;
c.fill = GridBagConstraints.BOTH;
c.gridwidth = 7;
c.weightx = c.weighty = 10.0;
gbl.setConstraints(scroll, c);
add(scroll);
c.gridx = 0;
c.gridy++;
c.fill = GridBagConstraints.HORIZONTAL;
c.weighty = 0.1;
gbl.setConstraints(status, c);
add(status);
}
/**
* Description of the Method
*/
public void createActions() {
// set text to "" to avoid showing action text in button--
// we only want it in menu items
backward.setAction(root.actions.backward);
backward.setText("");
forward.setAction(root.actions.forward);
forward.setText("");
reload.setAction(root.actions.reload);
reload.setText("");
goHome.setAction(root.actions.goHome);
goHome.setText("");
print_preview.setAction(root.actions.print_preview);
print_preview.setText("");
url.setAction(root.actions.load);
goToPage.setAction(root.actions.goToPage);
updateButtons();
}
/**
* Description of the Method
*/
public void goForward() {
String uri = manager.getForward();
view.setDocument(uri);
updateButtons();
}
/**
* Description of the Method
*/
public void goBack() {
String uri = manager.getBack();
view.setDocument(uri);
updateButtons();
}
/**
* Description of the Method
*/
public void reloadPage() {
logger.info("Reloading Page: ");
if (manager.getBaseURL() != null) {
loadPage(manager.getBaseURL());
}
}
/**
* Description of the Method
*
* @param url_text PARAM
*/
//TODO: make this part of an implementation of UserAgentCallback instead
public void loadPage(final String url_text) {
try {
logger.info("Loading Page: " + url_text);
view.setCursor(new Cursor(Cursor.WAIT_CURSOR));
view.setDocument(url_text);
view.addDocumentListener(BrowserPanel.this);
updateButtons();
setStatus("Successfully loaded: " + url_text);
if (listener != null) {
listener.pageLoadSuccess(url_text, view.getDocumentTitle());
}
} catch (XRRuntimeException ex) {
XRLog.general(Level.SEVERE, "Runtime exception", ex);
setStatus("Can't load document");
handlePageLoadFailed(url_text, ex);
} catch (Exception ex) {
XRLog.general(Level.SEVERE, "Could not load page for display.", ex);
ex.printStackTrace();
}
}
public void exportToPdf( String path )
{
if (manager.getBaseURL() != null) {
setStatus( "Exporting to " + path + "..." );
OutputStream os = null;
try {
os = new FileOutputStream(path);
try {
ITextRenderer renderer = new ITextRenderer();
DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
DocumentBuilder db = dbf.newDocumentBuilder();
Document doc = db.parse(manager.getBaseURL());
PDFCreationListener pdfCreationListener = new XHtmlMetaToPdfInfoAdapter( doc );
renderer.setListener( pdfCreationListener );
renderer.setDocument(manager.getBaseURL());
renderer.layout();
renderer.createPDF(os);
setStatus( "Done export." );
} catch (Exception e) {
XRLog.general(Level.SEVERE, "Could not export PDF.", e);
e.printStackTrace();
setStatus( "Error exporting to PDF." );
} finally {
try {
os.close();
} catch (IOException e) {
// swallow
}
}
} catch (Exception e) {
e.printStackTrace();
}
}
}
private void handlePageLoadFailed(String url_text, XRRuntimeException ex) {
final XMLResource xr;
final String rootCause = getRootCause(ex);
final String msg = GeneralUtil.escapeHTML(addLineBreaks(rootCause, 80));
String notFound =
"<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n" +
"<!DOCTYPE html PUBLIC \" -//W3C//DTD XHTML 1.0 Strict//EN\" \"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd\">\n" +
"<html xmlns=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\" lang=\"en\">\n" +
"<body>\n" +
"<h1>Document can't be loaded</h1>\n" +
"<p>Could not load the page at \n" +
"<pre>" + GeneralUtil.escapeHTML(url_text) + "</pre>\n" +
"</p>\n" +
"<p>The page failed to load; the error was </p>\n" +
"<pre>" + msg + "</pre>\n" +
"</body>\n" +
"</html>";
xr = XMLResource.load(new StringReader(notFound));
SwingUtilities.invokeLater(new Runnable() {
public void run() {
root.panel.view.setDocument(xr.getDocument(), null);
}
});
}
private String addLineBreaks(String _text, int maxLineLength) {
StringBuffer broken = new StringBuffer(_text.length() + 10);
boolean needBreak = false;
for (int i = 0; i < _text.length(); i++) {
if (i > 0 && i % maxLineLength == 0) needBreak = true;
final char c = _text.charAt(i);
if (needBreak && Character.isWhitespace(c)) {
System.out.println("Breaking: " + broken.toString());
needBreak = false;
broken.append('\n');
} else {
broken.append(c);
}
}
System.out.println("Broken! " + broken.toString());
return broken.toString();
}
private String getRootCause(Exception ex) {
// FIXME
Throwable cause = ex;
while (cause != null) {
cause = cause.getCause();
}
return cause == null ? ex.getMessage() : cause.getMessage();
}
public void documentStarted() {
// TODO...
}
/**
* Description of the Method
*/
public void documentLoaded() {
view.setCursor(new Cursor(Cursor.DEFAULT_CURSOR));
}
/**
* Sets the status attribute of the BrowserPanel object
*
* @param txt The new status value
*/
public void setStatus(String txt) {
status.text.setText(txt);
}
/**
* Description of the Method
*/
protected void updateButtons() {
if (manager.hasBack()) {
root.actions.backward.setEnabled(true);
} else {
root.actions.backward.setEnabled(false);
}
if (manager.hasForward()) {
root.actions.forward.setEnabled(true);
} else {
root.actions.forward.setEnabled(false);
}
url.setText(manager.getBaseURL());
}
public void onLayoutException(Throwable t) {
// TODO: clean
t.printStackTrace();
}
public void onRenderException(Throwable t) {
// TODO: clean
t.printStackTrace();
}
}
/*
* $Id$
*
* $Log$
* Revision 1.41 2009/08/03 19:36:29 pdoubleya
* Add new listener for PDF generation which automatically parses HTML header information and adds it as PDF properties (e.g. title, subject). Patch submitted by Tim Telcik in email. Thanks!
*
* Revision 1.38 2008/09/06 18:44:29 peterbrant
* Add PDF export to browser (patch from Mykola Gurov)
*
* Revision 1.37 2008/05/30 13:25:00 pdoubleya
* Remove commented code blocks, add error handling if can't load page.
*
* Revision 1.36 2007/07/14 12:56:40 pdoubleya
* Browser toolbar should not be movable
*
* Revision 1.35 2007/07/13 13:32:31 pdoubleya
* Add webstart entry point for browser with no URL or File/open option. Move Zoom to menu entry, add warning on first zoom. Move preview to menu entry. Reorganize launch method a little to allow for multiple entry points.
*
* Revision 1.34 2007/06/19 21:28:41 pdoubleya
* Support for document scaling, from Christophe Marchand via email. Browser demo panel is now scalable as well.
*
* Revision 1.33 2007/04/03 13:18:15 peterbrant
* Implement new DocumentListener API
*
* Revision 1.32 2006/08/06 21:27:00 pdoubleya
* Removed printing for R6.
*
* Revision 1.31 2006/08/03 14:15:01 pdoubleya
* Print action
*
* Revision 1.30 2006/07/31 14:20:54 pdoubleya
* Bunch of cleanups and fixes. Now using a toolbar for actions, added Home button, next/prev navigation actions to facilitate demo file browsing, loading demo pages from a list, about dlg and link to user's manual.
*
* Revision 1.29 2005/10/27 00:08:50 tobega
* Sorted out Context into RenderingContext and LayoutContext
*
* Revision 1.28 2005/10/08 17:40:17 tobega
* Patch from Peter Brant
*
* Revision 1.27 2005/06/19 23:32:46 joshy
* cursor stuff
* Issue number:
* Obtained from:
* Submitted by:
* Reviewed by:
*
* Revision 1.26 2005/06/16 07:24:43 tobega
* Fixed background image bug.
* Caching images in browser.
* Enhanced LinkListener.
* Some house-cleaning, playing with Idea's code inspection utility.
*
* Revision 1.25 2005/06/15 13:35:27 tobega
* Fixed history
*
* Revision 1.24 2005/06/15 10:56:13 tobega
* cleaned up a bit of URL mess, centralizing URI-resolution and loading to UserAgentCallback
*
* Revision 1.23 2005/06/01 21:36:34 tobega
* Got image scaling working, and did some refactoring along the way
*
* Revision 1.22 2005/03/28 20:02:01 pdoubleya
* Removed commented code, cleaned menu bar.
*
* Revision 1.21 2005/02/05 11:35:59 pdoubleya
* Load pages directly from XMLResource.
*
* Revision 1.20 2005/02/03 23:19:43 pdoubleya
* Uses ResourceProvider for loading files.
*
* Revision 1.19 2005/01/30 10:21:49 pdoubleya
* Extracted keyboard actions to FSScrollPane.
*
* Revision 1.18 2005/01/29 20:17:42 pdoubleya
* Updated panels to support page up/down properly, and formatted/cleaned.
*
* Revision 1.17 2005/01/13 00:48:47 tobega
* Added preparation of values for a form submission
*
* Revision 1.16 2004/12/29 10:39:38 tobega
* Separated current state Context into LayoutContext and the rest into SharedContext.
*
* Revision 1.15 2004/12/12 16:11:04 tobega
* Fixed bug concerning order of inline content. Added a demo for pseudo-elements.
*
* Revision 1.14 2004/12/12 03:33:07 tobega
* Renamed x and u to avoid confusing IDE. But that got cvs in a twist. See if this does it
*
* Revision 1.13 2004/12/12 02:54:11 tobega
* Making progress
*
* Revision 1.12 2004/12/01 00:13:34 tobega
* Fixed incorrect handling of http urls.
*
* Revision 1.11 2004/11/27 15:46:37 joshy
* lots of cleanup to make the code clearer
*
* Issue number:
* Obtained from:
* Submitted by:
* Reviewed by:
*
* Revision 1.10 2004/11/17 14:58:17 joshy
* added actions for font resizing
*
* Issue number:
* Obtained from:
* Submitted by:
* Reviewed by:
*
* Revision 1.9 2004/11/17 00:44:54 joshy
* fixed bug in the history manager
* added cursor support to the link listener
*
*
* Issue number:
* Obtained from:
* Submitted by:
* Reviewed by:
*
* Revision 1.8 2004/11/16 07:25:20 tobega
* Renamed HTMLPanel to BasicPanel
*
* Revision 1.7 2004/11/16 03:43:25 joshy
* first pass at printing support
* Issue number:
* Obtained from:
* Submitted by:
* Reviewed by:
*
* Revision 1.6 2004/11/12 20:43:29 joshy
* added demo of custom font
*
* Issue number:
* Obtained from:
* Submitted by:
* Reviewed by:
*
* Revision 1.5 2004/11/12 02:23:56 joshy
* added new APIs for rendering context, xhtmlpanel, and graphics2drenderer.
* initial support for font mapping additions
*
*
* Issue number:
* Obtained from:
* Submitted by:
* Reviewed by:
*
* Revision 1.4 2004/10/23 14:38:58 pdoubleya
* Re-formatted using JavaStyle tool.
* Cleaned imports to resolve wildcards except for common packages (java.io, java.util, etc)
* Added CVS log comments at bottom.
*
*
*/