package com.limegroup.gnutella.gui.statistics;

import java.awt.Component;
import java.awt.event.ComponentEvent;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;

import javax.swing.JComponent;

import com.limegroup.gnutella.gui.BoxPanel;
import com.limegroup.gnutella.gui.statistics.panes.PaneItem;

/**
 * This class provides a skeletal implementation of the <tt>StatisticsPane</tt>
 * interface for parent group nodes in the tree.<p>
 *
 * It contains an <tt>ArrayList</tt> of <tt>PaneItem</tt> instances that 
 * are inside it.
 */
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final class VisibleStatsPane implements StatisticsPane {

	/**
	 * Constant for the <tt>Container</tt> that elements are added to. This
	 * is implemented as a <tt>BoxPanel</tt>.
	 */
	private final JComponent CONTAINER = new BoxPanel();
	
	/**
	 * Constant for the <tt>List</tt> that contains all of the 
	 * <tt>PaneItem</tt> instances associated with this panel.
	 */
	private final List PANE_ITEMS_LIST = new ArrayList();

	/**
	 * <tt>String</tt> for the name of this panel.  This name is used as the
	 * key for identifying this panel in the <tt>CardLayout</tt>.
	 */
	private final String NAME;

	
	/**
	 * This sole constructor overrides the the public accessibility of the 
	 * default constructor and is usually called implicitly by subclasses.
	 */
	VisibleStatsPane(final String name) {		
		NAME = name;
	}

	// inherit doc comment
	public String getName() {
		return NAME;
	}

	// inherit doc comment
	public JComponent getComponent() {
		return CONTAINER;
	}

	// inherit doc comment
	public void add(PaneItem item) {
		PANE_ITEMS_LIST.add(item);
		CONTAINER.add(item.getContainer());
	}

    // inherit doc comment
    public PaneItem getFirstPaneItem() {
        return (PaneItem)PANE_ITEMS_LIST.get(0);
    }
        

	// inherit doc comment
	public void refresh() {	   
		Iterator iter = PANE_ITEMS_LIST.iterator();
		while(iter.hasNext()) {
			PaneItem curItem = (PaneItem)iter.next();
			curItem.refresh();
		}
	}

	// inherit doc comment
	public boolean display() {
		return true;
	}

	// inherit doc comment
    public void componentResized(ComponentEvent e, Component comp) {
        for(int i=0, size = PANE_ITEMS_LIST.size(); i<size; i++) {
            ((PaneItem)PANE_ITEMS_LIST.get(i)).componentResized(e, comp);
        }		
    }
}