001/*
002 * $Id: ListCellContext.java 3424 2009-07-30 10:53:39Z kleopatra $
003 *
004 * Copyright 2008 Sun Microsystems, Inc., 4150 Network Circle,
005 * Santa Clara, California 95054, U.S.A. All rights reserved.
006 *
007 * This library is free software; you can redistribute it and/or
008 * modify it under the terms of the GNU Lesser General Public
009 * License as published by the Free Software Foundation; either
010 * version 2.1 of the License, or (at your option) any later version.
011 *
012 * This library is distributed in the hope that it will be useful,
013 * but WITHOUT ANY WARRANTY; without even the implied warranty of
014 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
015 * Lesser General Public License for more details.
016 *
017 * You should have received a copy of the GNU Lesser General Public
018 * License along with this library; if not, write to the Free Software
019 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
020 */
021package org.jdesktop.swingx.renderer;
022
023import java.awt.Color;
024
025import javax.swing.JList;
026
027/**
028 * List specific <code>CellContext</code>.
029 */
030public class ListCellContext extends CellContext {
031
032    /**
033     * Sets state of the cell's context. Note that the component might be null
034     * to indicate a cell without a concrete context. All accessors must cope
035     * with.
036     * 
037     * @param component the component the cell resides on, might be null
038     * @param value the content value of the cell
039     * @param row the cell's row index in view coordinates
040     * @param column the cell's column index in view coordinates
041     * @param selected the cell's selected state
042     * @param focused the cell's focused state
043     * @param expanded the cell's expanded state
044     * @param leaf the cell's leaf state
045     */
046    public void installContext(JList component, Object value, int row, int column,
047            boolean selected, boolean focused, boolean expanded, boolean leaf) {
048        this.component = component;
049        installState(value, row, column, selected, focused, expanded, leaf);
050        this.dropOn = checkDropOnState();
051    }
052
053    /**
054     * 
055     */
056    private boolean checkDropOnState() {
057        if ((getComponent() == null)) {
058            return false;
059        }
060        JList.DropLocation dropLocation = getComponent().getDropLocation();
061        if (dropLocation != null
062                && !dropLocation.isInsert()
063                && dropLocation.getIndex() == row) {
064            return true;
065        }
066        return false;
067    }
068
069    
070    @Override
071    public JList getComponent() {
072        return (JList) super.getComponent();
073    }
074
075    /**
076     * {@inheritDoc}
077     */
078    @Override
079    protected Color getSelectionBackground() {
080        Color selection = null;
081        if (isDropOn()) {
082            selection = getDropCellBackground();
083            if (selection != null) return selection;
084        }
085        return getComponent() != null ? getComponent().getSelectionBackground() : null;
086    }
087
088    /**
089     * {@inheritDoc}
090     */
091    @Override
092    protected Color getSelectionForeground() {
093        Color selection = null;
094        if (isDropOn()) {
095            selection = getDropCellForeground();
096            if (selection != null) return selection;
097        }
098        return getComponent() != null ? getComponent().getSelectionForeground() : null;
099    }
100
101    /**
102     * {@inheritDoc}
103     */
104    @Override
105    protected String getUIPrefix() {
106        return "List.";
107    }
108    
109    
110    
111}