sharelist.java

peeranha42是jxta的 p2p程序核心

package de.uni_bremen.informatik.p2p.plugins.filesharing.data;

import java.util.ArrayList;

import javax.swing.table.AbstractTableModel;


/**
 * The ShareList class represents a datastructur of all shares of the
 * filesharing plugin. The class extends the functions of a
 * AbstractTableModel to be the data class behind a JTable.
 *
 * @author Lars Kordes, Philipp Hoheisel
 */
public class ShareList
    extends AbstractTableModel {
    /** List of all shares. */
    private ArrayList list;

    /**
     * Classconstructor.
     *
     * @param list ArrayList with all shares of the filesharing plugin.
     */
    public ShareList(ArrayList list) {
        if (list == null) {
            list = new ArrayList();
        }

        this.list = list;
    }

    //----------------- ABSTRACT TABLE MODEL CLASS -------------------//

    /**
     * Method returns the number of columns in the table. There are 3 columns.
     *
     * @see javax.swing.table.TableModel#getColumnCount()
     */
    public int getColumnCount() {
        return 3;
    	//return 2;
    }

    /**
     * Method return the number of rows in the table. The number equals the
     * length of the sharelist.
     *
     * @see javax.swing.table.TableModel#getRowCount()
     */
    public int getRowCount() {
        return list.size();
    }

    /**
     * Returns the value at a specific tablecell.
     *
     * @see javax.swing.table.TableModel#getValueAt(int, int)
     */
    public Object getValueAt(int arg0,
                             int arg1) {
        if (list == null) {
            return null;
        }

        Share sf = (Share) list.get(arg0);

        if (sf == null) {
            return null;
        }

        switch (arg1) {
        case 0 :
            return sf.file.getParent();

        case 1 :
            if (sf.file.getName().equals("")) {
                return "";
            } else {
                return sf.file.getName();
            }

        case 2 :
        	return sf.hash;
        }

        return null;
    }

    /**
     * Method returns the names of the specific columns.
     *
     * @param arg0 Index of the column.
     *
     * @return Name of the specific column.
     */
    public String getColumnName(int arg0) {
        switch (arg0) {
        case 0 :
            return "Path";

        case 1 :
            return "Filename";

        case 2 :
            return "Hash value";
        }

        return null;
    }
}