tasklist.ui/src/org/netbeans/modules/tasklist/ui/checklist/DefaultCheckListCellRenderer.java

/**
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */

package org.netbeans.modules.tasklist.ui.checklist;

import java.awt.Component;
import javax.swing.JCheckBox;
import javax.swing.JList;
import javax.swing.ListCellRenderer;
import javax.swing.UIManager;
import javax.swing.border.Border;
import javax.swing.border.EmptyBorder;

/**
 * Default renderer for CheckList
 */
public class DefaultCheckListCellRenderer extends JCheckBox
    implements ListCellRenderer {

    private static final long serialVersionUID = 1;

    private static Border noFocusBorder;

    /**
     * Constructs a default renderer object for an item
     * in a list.
     */
    public DefaultCheckListCellRenderer() {
        super();
        if (noFocusBorder == null) {
            noFocusBorder = new EmptyBorder(1, 1, 1, 1);
        }
        setOpaque(true);
        setBorder(noFocusBorder);
    }

    public Component getListCellRendererComponent(JList list, Object value,
        int index, boolean isSelected, boolean cellHasFocus) {
        setComponentOrientation(list.getComponentOrientation());
        if (isSelected) {
            setBackground(list.getSelectionBackground());
            setForeground(list.getSelectionForeground());
        }
        else {
            setBackground(list.getBackground());
            setForeground(list.getForeground());
        }

        setEnabled(list.isEnabled());
        setFont(list.getFont());
        if( cellHasFocus ) {
            Border b = UIManager.getBorder("List.focusCellHighlightBorder"); //NOI18N
            if( null != b && null != b.getBorderInsets(this) )
                setBorder( b );
        } else {
            setBorder( noFocusBorder);
        }

        setText((value == null) ? "" : value.toString());
        setSelected(((CheckListModel) list.getModel()).isChecked(index));
        return this;
    }
}