/*
* This program is free software; you can redistribute it and/or modify it under the
* terms of the GNU Lesser General Public License, version 2.1 as published by the Free Software
* Foundation.
*
* You should have received a copy of the GNU Lesser General Public License along with this
* program; if not, you can obtain a copy at http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html
* or from the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
* 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.
*
* Copyright (c) 2006 - 2013 Pentaho Corporation and Contributors. All rights reserved.
*/
package org.pentaho.reporting.engine.classic.demo.util;
import java.awt.BorderLayout;
import java.awt.Container;
import java.awt.Dimension;
import java.io.IOException;
import java.net.URL;
import javax.swing.BorderFactory;
import javax.swing.JButton;
import javax.swing.JComponent;
import javax.swing.JEditorPane;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JSplitPane;
import javax.swing.JTree;
import javax.swing.event.TreeSelectionEvent;
import javax.swing.event.TreeSelectionListener;
import javax.swing.tree.DefaultTreeModel;
import javax.swing.tree.TreePath;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.pentaho.reporting.libraries.base.util.ObjectUtilities;
/**
* The CompoundDemoFrame provides a unified GUI which is able to present more than one demo. The Demos are selectable
* using a JTree component.
*
* @author Thomas Morgner
*/
public class CompoundDemoFrame extends AbstractDemoFrame
{
private static final Log logger = LogFactory.getLog(CompoundDemoFrame.class);
private class TreeSelectionHandler implements TreeSelectionListener
{
public TreeSelectionHandler()
{
}
public void valueChanged(TreeSelectionEvent e)
{
final TreePath treePath = e.getNewLeadSelectionPath();
if (treePath == null)
{
setSelectedHandler(null);
}
else
{
final Object o = treePath.getLastPathComponent();
if (o instanceof DemoHandlerTreeNode)
{
DemoHandlerTreeNode handlerNode = (DemoHandlerTreeNode) o;
DemoHandler handler = handlerNode.getHandler();
setSelectedHandler(handler);
}
else
{
setSelectedHandler(null);
}
}
}
}
private DemoHandler selectedHandler;
private DemoSelector demoSelector;
private JPanel demoContent;
private JComponent externalHandlerArea;
public CompoundDemoFrame(final DemoSelector demoSelector)
{
this.demoSelector = demoSelector;
}
public DemoSelector getDemoSelector()
{
return demoSelector;
}
protected void init()
{
setTitle(demoSelector.getName());
setJMenuBar(createMenuBar());
setContentPane(createDefaultContentPane());
}
protected void setSelectedHandler(final DemoHandler handler)
{
selectedHandler = handler;
demoContent.removeAll();
if (handler instanceof InternalDemoHandler)
{
demoContent.add(createDefaultDemoPane((InternalDemoHandler) handler));
getPreviewAction().setEnabled(true);
}
else if (handler != null)
{
demoContent.add(getExternalHandlerInfoPane());
getPreviewAction().setEnabled(true);
}
else
{
demoContent.add(getNoHandlerInfoPane());
getPreviewAction().setEnabled(false);
}
demoContent.revalidate();
}
protected JComponent getExternalHandlerInfoPane()
{
if (externalHandlerArea == null)
{
final JPanel content = new JPanel(new BorderLayout());
content.setBorder(BorderFactory.createEmptyBorder(4, 4, 4, 4));
final URL url = ObjectUtilities.getResource
("org/pentaho/reporting/engine/classic/demo/resources/external-handler-info.html", CompoundDemoFrame.class);
final JComponent scroll = createDescriptionTextPane(url);
final JButton previewButton = new JButton(getPreviewAction());
content.add(scroll, BorderLayout.CENTER);
content.add(previewButton, BorderLayout.SOUTH);
externalHandlerArea = content;
}
return externalHandlerArea;
}
protected JComponent createDescriptionTextPane(final URL url)
{
final JEditorPane editorPane = new JEditorPane();
editorPane.setEditable(false);
editorPane.setPreferredSize(new Dimension(400, 200));
if (url != null)
{
try
{
editorPane.setPage(url);
}
catch (IOException e)
{
logger.error("Failed to load demo description", e);
editorPane.setText("Unable to load the demo description. Error: " + e
.getMessage());
}
}
else
{
editorPane.setText(
"Unable to load the demo description. No such resource.");
}
return new JScrollPane(editorPane,
JScrollPane.VERTICAL_SCROLLBAR_AS_NEEDED,
JScrollPane.HORIZONTAL_SCROLLBAR_AS_NEEDED);
}
protected JComponent getNoHandlerInfoPane()
{
return new JPanel();
}
public DemoHandler getSelectedHandler()
{
return selectedHandler;
}
protected Container createDefaultContentPane()
{
demoContent = new JPanel();
demoContent.setLayout(new BorderLayout());
demoContent.setMinimumSize(new Dimension(100, 100));
demoContent.add(getNoHandlerInfoPane(), BorderLayout.CENTER);
JPanel placeHolder = new JPanel();
placeHolder.setMinimumSize(new Dimension(300, 0));
placeHolder.setPreferredSize(new Dimension(300, 0));
placeHolder.setMaximumSize(new Dimension(300, 0));
JPanel rootContent = new JPanel();
rootContent.setLayout(new BorderLayout());
rootContent.add(demoContent, BorderLayout.CENTER);
rootContent.add(placeHolder, BorderLayout.NORTH);
final DemoSelectorTreeNode root = new DemoSelectorTreeNode(null,
demoSelector);
final DefaultTreeModel model = new DefaultTreeModel(root);
final JTree demoTree = new JTree(model);
demoTree.addTreeSelectionListener(new TreeSelectionHandler());
JSplitPane rootSplitPane =
new JSplitPane(JSplitPane.HORIZONTAL_SPLIT,
new JScrollPane(demoTree), rootContent);
rootSplitPane.setContinuousLayout(true);
rootSplitPane.setDividerLocation(200);
rootSplitPane.setOneTouchExpandable(true);
return rootSplitPane;
}
protected JComponent createDefaultDemoPane(final InternalDemoHandler demoHandler)
{
final JPanel content = new JPanel(new BorderLayout());
content.setBorder(BorderFactory.createEmptyBorder(4, 4, 4, 4));
final URL url = demoHandler.getDemoDescriptionSource();
final JComponent scroll = createDescriptionTextPane(url);
final JButton previewButton = new JButton(getPreviewAction());
final JSplitPane splitPane = new JSplitPane(JSplitPane.VERTICAL_SPLIT);
splitPane.setTopComponent(scroll);
splitPane.setBottomComponent(demoHandler.getPresentationComponent());
splitPane.setDividerLocation(200);
splitPane.setOneTouchExpandable(true);
content.add(splitPane, BorderLayout.CENTER);
content.add(previewButton, BorderLayout.SOUTH);
return content;
}
protected void attemptPreview()
{
final DemoHandler selectedHandler = getSelectedHandler();
if (selectedHandler == null)
{
return;
}
final PreviewHandler previewHandler = selectedHandler.getPreviewHandler();
previewHandler.attemptPreview();
}
}