// BlogBridge -- RSS feed reader, manager, and web based service
// Copyright (C) 2002-2006 by R. Pito Salas
//
// This program is free software; you can redistribute it and/or modify it under
// the terms of the GNU General Public License as published by the Free Software Foundation;
// either version 2 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 General Public License for more details.
//
// You should have received a copy of the GNU 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
//
// Contact: R. Pito Salas
// mailto:pitosalas@users.sourceforge.net
// More information: about BlogBridge
// http://www.blogbridge.com
// http://sourceforge.net/projects/blogbridge
//
// $Id: ArticlesGroup.java,v 1.21 2007/09/19 15:55:01 spyromus Exp $
//
package com.salas.bb.views.feeds.html;
import com.jgoodies.forms.layout.CellConstraints;
import com.jgoodies.forms.layout.FormLayout;
import com.salas.bb.core.GlobalController;
import com.salas.bb.core.GlobalModel;
import com.salas.bb.domain.IArticle;
import com.salas.bb.utils.uif.ColExIconLabel;
import com.salas.bb.utils.uif.ShadowLabel;
import com.salas.bb.utils.uif.UpDownBorder;
import com.salas.bb.views.feeds.IArticleDisplay;
import javax.swing.*;
import java.awt.*;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.awt.event.MouseListener;
import java.util.ArrayList;
import java.util.LinkedList;
import java.util.List;
/**
* Special component to represent the header of articles group.
*/
public class ArticlesGroup extends JPanel
{
private static final Color COLOR_GRADIENT_TOP = Color.WHITE;
private static final Color COLOR_GRADIENT_BOTTOM = Color.decode("#c5c5c5");
private final ColExIconLabel lbSign;
private final ShadowLabel lbTitle;
private final MouseListener popup;
private boolean expanded;
private List<IArticleDisplay> displays;
private boolean canBeVisible;
private boolean visibleIfEmpty;
/**
* Creates article group.
*
* @param aName name of the group.
* @param popup configures popup.
*/
public ArticlesGroup(String aName, MouseListener popup)
{
this.popup = popup;
canBeVisible = true;
visibleIfEmpty = true;
displays = new ArrayList<IArticleDisplay>();
lbSign = new ColExIconLabel();
lbSign.addMouseListener(new SignClickListener());
lbTitle = new ShadowLabel(Color.WHITE);
initGUI();
setName(aName);
setExpanded(true);
enableEvents(AWTEvent.MOUSE_EVENT_MASK);
}
/**
* Changes a font of the label.
*
* @param font new font.
*/
public void setFont(Font font)
{
if (lbTitle != null) lbTitle.setFont(font);
}
/**
* Returns <code>TRUE</code> if is currently expanded.
*
* @return <code>TRUE</code> if is currently expanded.
*/
boolean isExpanded()
{
return expanded;
}
/**
* Expands / collapses the views.
*
* @param exp <code>TRUE</code> to expand.
*/
public void setExpanded(boolean exp)
{
if (expanded != exp)
{
expanded = exp;
// Show / hide views
for (IArticleDisplay display : displays)
{
display.getComponent().setVisible(exp);
}
// Change icon
lbSign.setCollapsed(!exp);
}
}
/**
* Changes the name of the group.
*
* @param name name of the group.
*/
public void setName(String name)
{
super.setName(name);
lbTitle.setText(name);
}
/**
* Registers view this group should manage.
*
* @param display view.
*/
public void register(IArticleDisplay display)
{
if (!displays.contains(display))
{
displays.add(display);
display.getComponent().setVisible(expanded);
reviewVisibility();
}
}
/**
* Unregisters article display.
*
* @param display article display.
*/
public void unregister(IArticleDisplay display)
{
displays.remove(display);
reviewVisibility();
}
/**
* Unregisters all views.
*/
public void unregisterAll()
{
displays.clear();
reviewVisibility();
}
/** GUI initialization. */
private void initGUI()
{
setLayout(new FormLayout("5dlu, center:min, 5dlu, left:min:grow, 5dlu",
"1dlu, pref, 1dlu"));
CellConstraints cc = new CellConstraints();
add(lbSign, cc.xy(2, 2));
add(lbTitle, cc.xy(4, 2));
setBorder(new UpDownBorder(Color.decode("#7a7a7a")));
}
/**
* Sets flat to show groups or no.
*
* @param vis <code>TRUE</code> to make groups visible.
*/
public void setCanBeVisible(boolean vis)
{
canBeVisible = vis;
reviewVisibility();
}
/**
* Sets flag to show group if it's empty or no.
*
* @param vis <code>TRUE</code> to show empty groups
* (if <code>canBeVisible</code> is <code>TRUE</code>).
*/
public void setVisibleIfEmpty(boolean vis)
{
visibleIfEmpty = vis;
reviewVisibility();
}
/**
* Reviews current visibility mode.
*/
private void reviewVisibility()
{
setVisible(canBeVisible &&
(visibleIfEmpty || displays.size() > 0));
}
/**
* Paints component.
*
* @param g the <code>Graphics</code> object to protect
*/
protected void paintComponent(Graphics g)
{
super.paintComponent(g);
if (isOpaque())
{
Color color1 = COLOR_GRADIENT_TOP;
Color color2 = COLOR_GRADIENT_BOTTOM;
int width = getWidth();
int height = getHeight();
Graphics2D g2 = (Graphics2D)g;
Paint storedPaint = g2.getPaint();
g2.setPaint(new GradientPaint(0, 0, color1, 0, height, color2));
g2.fillRect(0, 0, width, height);
g2.setPaint(storedPaint);
// g2.setColor(COLOR_BOTTOM_STROKE);
// g2.drawLine(0, height - 1, width - 1, height - 1);
paintBorder(g);
}
}
@Override
protected void processMouseEvent(MouseEvent e)
{
super.processMouseEvent(e);
switch (e.getID())
{
case MouseEvent.MOUSE_PRESSED:
if (popup != null) popup.mousePressed(e);
break;
case MouseEvent.MOUSE_RELEASED:
if (popup != null) popup.mousePressed(e);
break;
default:
break;
}
}
/**
* Marks articles of all associated displays as (un)read.
*
* @param markAsRead <code>TRUE</code> to mark as read.
*/
public void markDisplays(boolean markAsRead)
{
List<IArticle> articles = new LinkedList<IArticle>();
for (IArticleDisplay display : displays)
{
IArticle article = display.getArticle();
if (article != null) articles.add(article);
}
// Mark articles as read and update statistics
GlobalModel model = GlobalModel.SINGLETON;
GlobalController.readArticles(markAsRead,
model.getSelectedGuide(),
model.getSelectedFeed(),
articles.toArray(new IArticle[articles.size()]));
}
/**
* Listener for clicks on expand / collaps sign.
*/
private final class SignClickListener extends MouseAdapter
{
/**
* Invoked when a mouse button has been pressed on a component.
*
* @param e mouse event object.
*/
public void mousePressed(final MouseEvent e)
{
setExpanded(!expanded);
}
}
}