source: trunk/gli/src/org/greenstone/gatherer/gui/tree/DragTreeCellRenderer.java@ 5590

/**
 *#########################################################################
 *
 * A component of the Gatherer application, part of the Greenstone digital
 * library suite from the New Zealand Digital Library Project at the
 * University of Waikato, New Zealand.
 *
 * <BR><BR>
 *
 * Author: John Thompson, Greenstone Digital Library, University of Waikato
 *
 * <BR><BR>
 *
 * Copyright (C) 1999 New Zealand Digital Library Project
 *
 * <BR><BR>
 *
 * 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 2 of the License, or
 * (at your option) any later version.
 *
 * <BR><BR>
 *
 * 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.
 *
 * <BR><BR>
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 *########################################################################
 */
package org.greenstone.gatherer.gui.tree;

import java.awt.*;
import javax.swing.*;
import javax.swing.tree.DefaultTreeCellRenderer;
import org.greenstone.gatherer.Configuration;
import org.greenstone.gatherer.Gatherer;
import org.greenstone.gatherer.file.FileNode;
import org.greenstone.gatherer.util.Utility;

public class DragTreeCellRenderer 
    extends DefaultTreeCellRenderer {
     
    private boolean in_focus = false;
    private Color selection_background;
    private Color selection_foreground;
     
    static final private ImageIcon GRAY_FOLDER = Utility.getImage("greyfolder.gif");
    static final private String PREFIX = " [";
    static final private String SUFFIX = "]";

    public DragTreeCellRenderer() {
    super();
    selection_background = getBackgroundSelectionColor();
    selection_foreground = getTextSelectionColor();
    }

    public void gainFocus() {
    setBackgroundSelectionColor(selection_background);
    setTextSelectionColor(selection_foreground);
    }

    /** Configures the renderer based on the passed in components. */
    public Component getTreeCellRendererComponent(JTree tree, Object value, boolean sel, boolean expanded, boolean leaf, int row, boolean hasFocus) {
    Component tree_cell = null;
    if(value instanceof FileNode) {
        FileNode node = (FileNode) value;
        
        String new_value = null;
        if(Gatherer.config.get("general.show_file_size", Configuration.COLLECTION_SPECIFIC) && node.getFile() != null && !node.getAllowsChildren()) {
        new_value = node.toString() + PREFIX + Utility.formatFileLength(node.getFile().length()) + SUFFIX;
        }
        else {
        new_value = node.toString();
        }

        tree_cell = (JLabel) super.getTreeCellRendererComponent(tree, new_value, sel, expanded, leaf, row, hasFocus);

        if(node.getFile() == null || node.isFileSystemRoot()) {
        ((JLabel)tree_cell).setIcon(GRAY_FOLDER);
        }
    }
    else {
        tree_cell = (JLabel) super.getTreeCellRendererComponent(tree, value, sel, expanded, leaf, row, hasFocus);
    }
    return tree_cell;
    }
          
    public void loseFocus() {
    setBackgroundSelectionColor(Color.lightGray);
    setTextSelectionColor(Color.black);
    }
}