/**
* DataCleaner (community edition)
* Copyright (C) 2014 Neopost - Customer Information Management
*
* This copyrighted material is made available to anyone wishing to use, modify,
* copy, or redistribute it subject to the terms and conditions of the GNU
* Lesser General Public License, as published by the Free Software Foundation.
*
* 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 distribution; if not, write to:
* Free Software Foundation, Inc.
* 51 Franklin Street, Fifth Floor
* Boston, MA 02110-1301 USA
*/
package org.datacleaner.panels;
import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Dimension;
import java.awt.Point;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.List;
import javax.swing.JComponent;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.ScrollPaneConstants;
import javax.swing.SwingUtilities;
import org.datacleaner.api.ShortNews;
import org.datacleaner.descriptors.RemoteDescriptorProvider;
import org.datacleaner.util.IconUtils;
import org.datacleaner.util.ImageManager;
import org.datacleaner.util.WidgetUtils;
import org.datacleaner.widgets.DCHtmlBox;
import org.datacleaner.widgets.DCLabel;
import org.jdesktop.swingx.VerticalLayout;
/**
* Panel that shows News form DataCloud
*/
public class NewsChannelPanel extends JPanel {
private class NewsDCHtmlBox extends DCHtmlBox {
private final ShortNews.Item _item;
private final String divStyles =
"padding: 5px; border-bottom: 1px #DCDCDC solid; margin-right: 15px; background-color: ";
private final String titleStyles = "font-weight: bold;";
private final String dateStyles = "font-size: 80%; color: grey;";
private final String msgStyles = "font-size: 90%;";
SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd");
private long _lastCheckTime;
public NewsDCHtmlBox(final long lastCheck, final ShortNews.Item item) {
super(null);
_item = item;
_lastCheckTime = lastCheck;
setContentText();
}
private void setLastCheck(final Long lastCheck) {
_lastCheckTime = lastCheck;
setContentText();
}
private void setContentText() {
setText("<div style='" + divStyles + getBgColor() + "'>" + "<span style='" + titleStyles + "'>" + _item
.getTitle() + "</span>" + " <span style='" + dateStyles + "'>(" + formatter
.format(_item.getDateCreated()) + ")</span>" + "<br /><span style='" + msgStyles + "'>" + _item
.getMessage() + "</span>" + " <a href='" + RemoteDescriptorProvider.DATACLEANER_BASE_URL
+ "/newsitem/" + _item.getName() + "' style='text-decoration: none;'>More.</a>" + "</div>");
}
private String getBgColor() {
String backgroundItemColor = "#FFFFFF;";
final java.util.Date itemDate = _item.getDateCreated();
if (itemDate.getTime() > _lastCheckTime) {
backgroundItemColor = "#F5F5F5;";
}
return backgroundItemColor;
}
}
private static final long serialVersionUID = 1L;
private final Color _background = WidgetUtils.BG_COLOR_BRIGHTEST;
private final Color _foreground = WidgetUtils.BG_COLOR_DARKEST;
private final JScrollPane scroll;
private final List<ShortNews.Item> _newsitems;
private final long _lastCheck;
private List<NewsDCHtmlBox> _newsBoxes = new ArrayList<>();
public NewsChannelPanel(final List<ShortNews.Item> newsitems, final long lastCheck) {
super();
_newsitems = newsitems;
_lastCheck = lastCheck;
final JComponent content = createContentPanel();
scroll = new JScrollPane(content);
scroll.setHorizontalScrollBarPolicy(ScrollPaneConstants.HORIZONTAL_SCROLLBAR_AS_NEEDED);
scroll.getVerticalScrollBar().setUnitIncrement(20);
this.setLayout(new BorderLayout());
this.add(scroll);
}
private JComponent createContentPanel() {
final JPanel p = new JPanel() {
// this trick effectively makes the panel with fixed width, but flexible height.
public Dimension getPreferredSize() {
final Dimension s = super.getPreferredSize();
s.width = WIDTH - scroll.getVerticalScrollBar().getWidth() - 50;
return s;
}
};
p.setLayout(new VerticalLayout(5));
p.setBackground(WidgetUtils.BG_COLOR_BRIGHTEST);
final DCLabel header = DCLabel.darkMultiLine("News Channel");
header.setFont(WidgetUtils.FONT_HEADER1);
header.setIcon(ImageManager.get().getImageIcon(IconUtils.NEWS_CHANNEL_TITLE_ICON));
p.add(header);
if (_newsitems == null) {
p.add(createWarningLabel("DataCleaner has a problem to connect to the server."));
} else {
if (_newsitems.size() == 0) {
p.add(createWarningLabel("You have not received any News."));
} else {
for (int i = 0; i < _newsitems.size(); i++) {
final NewsDCHtmlBox newsDCHtmlBox = new NewsDCHtmlBox(_lastCheck, _newsitems.get(i));
_newsBoxes.add(newsDCHtmlBox);
p.add(newsDCHtmlBox);
}
}
}
return p;
}
public void refresh(final long lastCheck) {
for (final NewsDCHtmlBox box : _newsBoxes) {
box.setLastCheck(lastCheck);
}
this.repaint();
}
public void scrollToTop() {
SwingUtilities.invokeLater(() -> scroll.getViewport().setViewPosition(new Point(0, 0)));
}
@Override
public Color getBackground() {
return _background;
}
@Override
public Color getForeground() {
return _foreground;
}
private DCLabel createWarningLabel(final String warningText) {
final DCLabel label = DCLabel.darkMultiLine(warningText);
label.setFont(WidgetUtils.FONT_HEADER2);
return label;
}
}