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/*
* IzPack - Copyright 2001-2008 Julien Ponge, All Rights Reserved.
*
* http://izpack.org/
* http://izpack.codehaus.org/
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* 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.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.izforge.izpack.panels.htmlinfo;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.net.URL;
import javax.swing.JEditorPane;
import javax.swing.JScrollPane;
import javax.swing.text.Document;
import com.izforge.izpack.api.GuiId;
import com.izforge.izpack.api.data.Panel;
import com.izforge.izpack.api.resource.Resources;
import com.izforge.izpack.gui.IzPanelLayout;
import com.izforge.izpack.gui.LabelFactory;
import com.izforge.izpack.gui.log.Log;
import com.izforge.izpack.installer.data.GUIInstallData;
import com.izforge.izpack.installer.gui.InstallerFrame;
import com.izforge.izpack.installer.gui.IzPanel;
import com.izforge.izpack.installer.util.PanelHelper;
import com.izforge.izpack.util.HyperlinkHandler;
/**
* The HTML info panel.
*
* @author Julien Ponge
*/
public class HTMLInfoPanel extends IzPanel
{
private static final long serialVersionUID = 3257008769514025270L;
/**
* Resource name for panel content.
*/
private final String panelResourceName;
/**
* The text area.
*/
private JEditorPane textArea;
/**
* Constructs an HTMLInfoPanel.
*
* @param panel the panel meta-data
* @param parent the parent window
* @param installData the installation data
* @param resources the resources
* @param log the log
*/
public HTMLInfoPanel(Panel panel, InstallerFrame parent, GUIInstallData installData, Resources resources, Log log)
{
this(panel, parent, installData, true, resources, log);
}
/**
* Constructs an HTMLInfoPanel.
*
* @param panel the panel meta-data
* @param parent the parent window
* @param installData the installation data
* @param showInfoLabelFlag true to show "please read..." label above content
* @param resources the resources
* @param log the log
*/
public HTMLInfoPanel(Panel panel, InstallerFrame parent, GUIInstallData installData,
boolean showInfoLabelFlag, Resources resources, Log log)
{
super(panel, parent, installData, new IzPanelLayout(log), resources);
panelResourceName = PanelHelper.getPanelResourceName(panel, "info", resources);
// We add the components
if (showInfoLabelFlag)
{ //flag is set; add label above content
String titleMessageKey = PanelHelper.getPanelTitleMessageKey(panel, "info", installData);
add(LabelFactory.create(getString(titleMessageKey), parent.getIcons().get("edit"), LEADING), NEXT_LINE);
}
try
{
textArea = new JEditorPane()
{ //override get-stream method to parse variable
private static final long serialVersionUID = 1L;
// declarations in HTML content:
protected InputStream getStream(URL urlObj)
throws IOException
{ //get original stream contents:
final InputStream inStm = super.getStream(urlObj);
final ByteArrayOutputStream btArrOutStm =
new ByteArrayOutputStream();
int b; //copy contents to output stream:
final byte[] buff = new byte[2048];
while ((b = inStm.read(buff, 0, buff.length)) > 0)
{
btArrOutStm.write(buff, 0, b);
}
//convert to string and parse variables:
final String parsedStr =
parseText(btArrOutStm.toString());
//return input stream to parsed string:
return new ByteArrayInputStream(
parsedStr.getBytes());
}
};
textArea.setName(GuiId.HTML_INFO_PANEL_TEXT.id);
textArea.setContentType("text/html; charset=utf-8");
textArea.setEditable(false);
textArea.addHyperlinkListener(new HyperlinkHandler());
JScrollPane scroller = new JScrollPane(textArea);
//set caret so beginning of file is displayed:
textArea.setCaretPosition(0);
add(scroller, NEXT_LINE);
}
catch (Exception err)
{
err.printStackTrace();
}
getLayoutHelper().completeLayout();
}
/*
* loads the content of the info resource as text so that it can be parsed afterwards
*/
private URL loadHTMLInfoContent()
{
try
{
return getResources().getURL(panelResourceName);
}
catch (Exception e)
{
e.printStackTrace();
return null;
}
}
/**
* Indicates whether the panel has been validated or not.
*
* @return Always true.
*/
public boolean isValidated()
{
return true;
}
public void panelActivate()
{
// Clear this property to get the document to reload and perform variable substitution.
// See JEditorPane.setPage javadoc.
textArea.getDocument().putProperty(Document.StreamDescriptionProperty, null);
try
{
textArea.setPage(loadHTMLInfoContent());
textArea.setCaretPosition(0);
}
catch (IOException e)
{
e.printStackTrace();
}
}
}
