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The Waikato Environment for Knowledge Analysis (WEKA), a machine
learning workbench. This is the stable version. Apart from bugfixes, this version
does not receive any other updates.
/*
* 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 3 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, see .
*/
/*
* InteractiveTablePanel.java
* Copyright (C) 2011-2013 University of Waikato, Hamilton, New Zealand
*/
package weka.gui;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.event.TableModelEvent;
import javax.swing.event.TableModelListener;
import javax.swing.table.DefaultTableCellRenderer;
import javax.swing.table.TableColumn;
import java.awt.BorderLayout;
import java.awt.Component;
/**
* Provides a panel using an interactive table model.
*
* @author Mark Hall (mhall{[at]}penthao{[dot]}com)
* @version $Revision: 10893 $
*/
public class InteractiveTablePanel extends JPanel {
/** For serialization */
private static final long serialVersionUID = 4495705463732140410L;
/** Holds column names */
protected String[] m_columnNames;
/** The table itself */
protected JTable m_table;
/** Scroll panel for the table */
protected JScrollPane m_scroller;
/** Model for the table */
protected InteractiveTableModel m_tableModel;
/**
* Constructor
*
* @param colNames the names of the columns
*/
public InteractiveTablePanel(String[] colNames) {
m_columnNames = colNames;
initComponent();
}
/**
* Initializes the component
*/
public void initComponent() {
m_tableModel = new InteractiveTableModel(m_columnNames);
m_tableModel
.addTableModelListener(new InteractiveTablePanel.InteractiveTableModelListener());
m_table = new JTable();
m_table.setModel(m_tableModel);
m_table.setSurrendersFocusOnKeystroke(true);
if (!m_tableModel.hasEmptyRow()) {
m_tableModel.addEmptyRow();
}
InteractiveTableModel model = (InteractiveTableModel) m_table.getModel();
m_scroller = new javax.swing.JScrollPane(m_table);
m_table.setPreferredScrollableViewportSize(new java.awt.Dimension(500, 80));
TableColumn hidden =
m_table.getColumnModel().getColumn(model.m_hidden_index);
hidden.setMinWidth(2);
hidden.setPreferredWidth(2);
hidden.setMaxWidth(2);
hidden.setCellRenderer(new InteractiveRenderer(model.m_hidden_index));
setLayout(new BorderLayout());
add(m_scroller, BorderLayout.CENTER);
}
/**
* Get the JTable component
*
* @return the JTable
*/
public JTable getTable() {
return m_table;
}
/**
* Highlight the last row in the table
*
* @param row the row
*/
public void highlightLastRow(int row) {
int lastrow = m_tableModel.getRowCount();
if (row == lastrow - 1) {
m_table.setRowSelectionInterval(lastrow - 1, lastrow - 1);
} else {
m_table.setRowSelectionInterval(row + 1, row + 1);
}
m_table.setColumnSelectionInterval(0, 0);
}
/**
* Renderer for the InteractiveTablePanel
*/
class InteractiveRenderer extends DefaultTableCellRenderer {
private static final long serialVersionUID = 6186813827783402502L;
/** The index of the interactive column */
protected int m_interactiveColumn;
/**
* Constructor
*
* @param interactiveColumn the column that is interactive (i.e. you can
* press return to generate a new row from it)
*/
public InteractiveRenderer(int interactiveColumn) {
m_interactiveColumn = interactiveColumn;
}
@Override
public Component getTableCellRendererComponent(JTable table, Object value,
boolean isSelected, boolean hasFocus, int row, int column) {
Component c =
super.getTableCellRendererComponent(table, value, isSelected, hasFocus,
row, column);
if (column == m_interactiveColumn && hasFocus) {
if ((InteractiveTablePanel.this.m_tableModel.getRowCount() - 1) == row
&& !InteractiveTablePanel.this.m_tableModel.hasEmptyRow()) {
InteractiveTablePanel.this.m_tableModel.addEmptyRow();
}
highlightLastRow(row);
}
return c;
}
}
/**
* Listener for the InteractiveTablePanel
*/
public class InteractiveTableModelListener implements TableModelListener {
@Override
public void tableChanged(TableModelEvent evt) {
if (evt.getType() == TableModelEvent.UPDATE) {
int column = evt.getColumn();
int row = evt.getFirstRow();
m_table.setColumnSelectionInterval(column + 1, column + 1);
m_table.setRowSelectionInterval(row, row);
}
}
}
}