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/**
 * DataCleaner (community edition)
 * Copyright (C) 2014 Neopost - Customer Information Management
 *
 * This copyrighted material is made available to anyone wishing to use, modify,
 * copy, or redistribute it subject to the terms and conditions of the GNU
 * Lesser General Public License, as published by the Free Software Foundation.
 *
 * 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 Lesser General Public License
 * for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this distribution; if not, write to:
 * Free Software Foundation, Inc.
 * 51 Franklin Street, Fifth Floor
 * Boston, MA  02110-1301  USA
 */
package org.datacleaner.widgets;

import java.awt.Dimension;
import java.awt.GridBagConstraints;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.geom.Point2D;
import java.util.Map;

import javax.swing.Icon;
import javax.swing.JComponent;
import javax.swing.JLabel;
import javax.swing.JMenuItem;
import javax.swing.JToolTip;
import javax.swing.ToolTipManager;
import javax.swing.border.Border;
import javax.swing.border.CompoundBorder;
import javax.swing.border.EmptyBorder;

import org.datacleaner.descriptors.ComponentDescriptor;
import org.datacleaner.job.builder.AnalysisJobBuilder;
import org.datacleaner.panels.DCPanel;
import org.datacleaner.util.IconUtils;
import org.datacleaner.util.StringUtils;
import org.datacleaner.util.WidgetUtils;
import org.datacleaner.widgets.tooltip.DCToolTip;
import org.datacleaner.widgets.visualization.JobGraphMetadata;

/**
 * MenuItem for a component descriptor.
 */
public class DescriptorMenuItem extends JMenuItem implements ActionListener {

    private static final long serialVersionUID = 1L;

    private final ComponentDescriptor _descriptor;
    private final AnalysisJobBuilder _analysisJobBuilder;
    private final Point2D _coordinate;

    public DescriptorMenuItem(final AnalysisJobBuilder analysisJobBuilder, final Point2D coordinate,
            final ComponentDescriptor descriptor) {
        this(analysisJobBuilder, coordinate, descriptor, true);
    }

    public DescriptorMenuItem(final AnalysisJobBuilder analysisJobBuilder, final Point2D coordinate,
            final ComponentDescriptor descriptor, final boolean addDefaultActionListener) {
        super(descriptor.getDisplayName());
        _analysisJobBuilder = analysisJobBuilder;
        _coordinate = coordinate;
        _descriptor = descriptor;
        if (addDefaultActionListener) {
            addActionListener(this);
        }
        ToolTipManager.sharedInstance().registerComponent(this);
    }

    @Override
    public void actionPerformed(final ActionEvent e) {
        final Map metadata;
        if (_coordinate == null) {
            metadata = null;
        } else {
            metadata = JobGraphMetadata.createMetadataProperties(_coordinate);
        }

        _analysisJobBuilder.addComponent(_descriptor, null, null, metadata);
    }

    @Override
    public Icon getIcon() {
        return IconUtils.getDescriptorIcon(_descriptor, IconUtils.ICON_SIZE_MENU_ITEM, false);
    }

    @Override
    public String getToolTipText() {
        return _descriptor.toString();
    }

    @Override
    public JToolTip createToolTip() {
        return new DCToolTip(this, createToolTipPanel());
    }

    protected JComponent createToolTipPanel() {
        final DCPanel panel = new DCPanel();
        panel.setOpaque(true);
        panel.setBackground(WidgetUtils.BG_COLOR_DARK);

        final JLabel iconLabel = new JLabel(IconUtils.getDescriptorIcon(_descriptor, IconUtils.ICON_SIZE_LARGE));
        iconLabel.setBorder(new EmptyBorder(0, 0, 0, 10));
        iconLabel.setOpaque(false);

        final JLabel nameLabel = new JLabel(_descriptor.getDisplayName());
        nameLabel.setForeground(WidgetUtils.BG_COLOR_BRIGHTEST);
        nameLabel.setOpaque(false);
        nameLabel.setFont(WidgetUtils.FONT_HEADER1);

        // if the bean has a description, add it in the CENTER of the tooltip
        final String description = _descriptor.getDescription();
        if (StringUtils.isNullOrEmpty(description)) {

            WidgetUtils.addToGridBag(iconLabel, panel, 0, 0);
            WidgetUtils.addToGridBag(nameLabel, panel, 1, 0);

        } else {
            final String[] lines = description.split("\n");

            WidgetUtils.addToGridBag(iconLabel, panel, 0, 0, 1, lines.length + 1, GridBagConstraints.WEST);
            WidgetUtils.addToGridBag(nameLabel, panel, 1, 0);

            int width = 0;
            int height = 0;

            for (int i = 0; i < lines.length; i++) {
                final String line = lines[i];

                final DCLabel label = DCLabel.brightMultiLine(line);
                label.setMaximumWidth(350);

                final Dimension ps = label.getPreferredSize();
                height += ps.height + 8;
                width = Math.max(ps.width, width);

                WidgetUtils.addToGridBag(label, panel, 1, i + 1);
            }

            width += iconLabel.getPreferredSize().width + 30;
            height += nameLabel.getPreferredSize().height + 30;

            panel.setPreferredSize(new Dimension(width, height));
        }

        final Border border = new CompoundBorder(WidgetUtils.BORDER_THIN, WidgetUtils.BORDER_EMPTY);
        panel.setBorder(border);
        return panel;
    }
}