/*
 *  RapidMiner
 *
 *  Copyright (C) 2001-2011 by Rapid-I and the contributors
 *
 *  Complete list of developers available at our web site:
 *
 *       http://rapid-i.com
 *
 *  This program is free software: you can redistribute it and/or modify
 *  it under the terms of the GNU Affero 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 Affero General Public License for more details.
 *
 *  You should have received a copy of the GNU Affero General Public License
 *  along with this program.  If not, see http://www.gnu.org/licenses/.
 */
package com.rapidminer.gui.properties.celleditors.value;

import java.awt.Component;
import java.awt.Insets;
import java.awt.event.ActionEvent;
import java.util.Collection;
import java.util.LinkedList;

import javax.swing.AbstractCellEditor;
import javax.swing.JButton;
import javax.swing.JTable;

import com.rapidminer.gui.properties.AttributesPropertyDialog;
import com.rapidminer.gui.tools.ResourceAction;
import com.rapidminer.operator.Operator;
import com.rapidminer.parameter.ParameterTypeAttributes;
import com.rapidminer.parameter.UndefinedParameterError;


/**
 * The value cell editor for the {@link ParameterTypeAttributes}. Displays
 * a button and opens a dialog to select attribute subsets in the case that
 * button is clicked.
 * 
 * @author Tobias Malbrecht
 */
public class AttributesValueCellEditor extends AbstractCellEditor implements PropertyValueCellEditor {

    private static final long serialVersionUID = -2387465714767785072L;

    private String attributeListString = "";

    private final JButton button;

    private Operator operator;

    public AttributesValueCellEditor(final ParameterTypeAttributes type) {
        this.button = new JButton(new ResourceAction(true, "attributes") {
            private static final long serialVersionUID = -4890375754223285831L;

            @Override
            public void actionPerformed(ActionEvent e) {
                LinkedList<String> preSelectedAttributeNames = new LinkedList<String>();
                String combinedNames = null;
                try {
                    if (operator != null)
                        combinedNames = operator.getParameter(type.getKey());
                } catch (UndefinedParameterError er) {
                }
                if (combinedNames != null) {
                    for (String attributeName : combinedNames.split("\\|")) {
                        preSelectedAttributeNames.add(attributeName);
                    }
                }
                AttributesPropertyDialog dialog = new AttributesPropertyDialog(type, preSelectedAttributeNames);
                dialog.setVisible(true);
                if (dialog.isOk()) {
                    StringBuilder builder = new StringBuilder();
                    boolean first = true;
                    Collection<String> attributeNames = dialog.getSelectedAttributeNames();
                    for (String attributeName : attributeNames) {
                        if (!first) {
                            builder.append("|");
                        }
                        builder.append(attributeName);
                        first = false;
                    }
                    attributeListString = builder.toString();
                    fireEditingStopped();
                } else {
                    fireEditingCanceled();
                }
            }
        });
        button.setMargin(new Insets(0, 0, 0, 0));
    }

    @Override
    public Object getCellEditorValue() {
        return attributeListString;
    }

    @Override
    public void setOperator(Operator operator) {
        this.operator = operator;
    }

    @Override
    public boolean rendersLabel() {
        return false;
    }

    @Override
    public boolean useEditorAsRenderer() {
        return false;
    }

    @Override
    public Component getTableCellEditorComponent(JTable table, Object value, boolean isSelected, int row, int column) {
        return button;
    }

    @Override
    public Component getTableCellRendererComponent(JTable table, Object value, boolean isSelected, boolean hasFocus, int row, int column) {
        return button;
    }

}