0N/A/*
3840N/A * Copyright (c) 1997, 2011, Oracle and/or its affiliates. All rights reserved.
0N/A *
0N/A * Redistribution and use in source and binary forms, with or without
0N/A * modification, are permitted provided that the following conditions
0N/A * are met:
0N/A *
0N/A * - Redistributions of source code must retain the above copyright
0N/A * notice, this list of conditions and the following disclaimer.
0N/A *
0N/A * - Redistributions in binary form must reproduce the above copyright
0N/A * notice, this list of conditions and the following disclaimer in the
0N/A * documentation and/or other materials provided with the distribution.
0N/A *
2362N/A * - Neither the name of Oracle nor the names of its
0N/A * contributors may be used to endorse or promote products derived
0N/A * from this software without specific prior written permission.
0N/A *
0N/A * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
0N/A * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
0N/A * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
0N/A * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
0N/A * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
0N/A * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
0N/A * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
0N/A * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
0N/A * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
0N/A * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
0N/A * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
0N/A */
0N/A
4378N/A/*
4378N/A * This source code is provided to illustrate the usage of a given feature
4378N/A * or technique and has been deliberately simplified. Additional steps
4378N/A * required for a production-quality application, such as security checks,
4378N/A * input validation and proper error handling, might not be present in
4378N/A * this sample code.
4378N/A */
4378N/A
4378N/A
0N/A
0N/Aimport javax.swing.Icon;
0N/Aimport javax.swing.ImageIcon;
0N/Aimport javax.swing.JLabel;
0N/Aimport javax.swing.JTree;
0N/Aimport javax.swing.tree.TreeCellRenderer;
0N/Aimport javax.swing.tree.DefaultMutableTreeNode;
0N/Aimport java.awt.Component;
0N/Aimport java.awt.Color;
0N/Aimport java.awt.Font;
0N/Aimport java.awt.Graphics;
3840N/Aimport javax.swing.UIManager;
0N/A
3840N/A
3840N/A@SuppressWarnings("serial")
3840N/Apublic class SampleTreeCellRenderer extends JLabel implements TreeCellRenderer {
3840N/A
0N/A /** Font used if the string to be displayed isn't a font. */
3840N/A protected static Font defaultFont;
0N/A /** Icon to use when the item is collapsed. */
3840N/A protected static ImageIcon collapsedIcon;
0N/A /** Icon to use when the item is expanded. */
3840N/A protected static ImageIcon expandedIcon;
0N/A /** Color to use for the background when selected. */
3840N/A protected static final Color SELECTED_BACKGROUND_COLOR;
0N/A
3840N/A static {
3840N/A if ("Nimbus".equals(UIManager.getLookAndFeel().getName())) {
3840N/A SELECTED_BACKGROUND_COLOR = new Color(0, 0,
3840N/A 0, 0);
3840N/A } else {
3840N/A SELECTED_BACKGROUND_COLOR = Color.YELLOW;
3840N/A }
0N/A try {
0N/A defaultFont = new Font("SansSerif", 0, 12);
3840N/A } catch (Exception e) {
3840N/A }
0N/A try {
3840N/A collapsedIcon = new ImageIcon(SampleTreeCellRenderer.class.
3840N/A getResource("/resources/images/collapsed.gif"));
3840N/A expandedIcon = new ImageIcon(SampleTreeCellRenderer.class.
3840N/A getResource("/resources/images/expanded.gif"));
0N/A } catch (Exception e) {
0N/A System.out.println("Couldn't load images: " + e);
0N/A }
0N/A }
0N/A /** Whether or not the item that was last configured is selected. */
3840N/A protected boolean selected;
0N/A
0N/A /**
3840N/A * This is messaged from JTree whenever it needs to get the size
3840N/A * of the component or it wants to draw it.
3840N/A * This attempts to set the font based on value, which will be
3840N/A * a TreeNode.
3840N/A */
0N/A public Component getTreeCellRendererComponent(JTree tree, Object value,
3840N/A boolean selected, boolean expanded,
3840N/A boolean leaf, int row,
3840N/A boolean hasFocus) {
3840N/A String stringValue = tree.convertValueToText(value, selected,
3840N/A expanded, leaf, row, hasFocus);
0N/A
0N/A /* Set the text. */
0N/A setText(stringValue);
0N/A /* Tooltips used by the tree. */
0N/A setToolTipText(stringValue);
0N/A
0N/A /* Set the image. */
3840N/A if (expanded) {
0N/A setIcon(expandedIcon);
3840N/A } else if (!leaf) {
0N/A setIcon(collapsedIcon);
3840N/A } else {
0N/A setIcon(null);
3840N/A }
0N/A
0N/A /* Set the color and the font based on the SampleData userObject. */
3840N/A SampleData userObject = (SampleData) ((DefaultMutableTreeNode) value).
3840N/A getUserObject();
3840N/A if (hasFocus) {
3840N/A setForeground(UIManager.getColor("Tree.selectionForeground"));
3840N/A } else {
0N/A setForeground(userObject.getColor());
3840N/A }
3840N/A if (userObject.getFont() == null) {
0N/A setFont(defaultFont);
3840N/A } else {
0N/A setFont(userObject.getFont());
3840N/A }
0N/A
0N/A /* Update the selected flag for the next paint. */
0N/A this.selected = selected;
0N/A
0N/A return this;
0N/A }
0N/A
0N/A /**
3840N/A * paint is subclassed to draw the background correctly. JLabel
3840N/A * currently does not allow backgrounds other than white, and it
3840N/A * will also fill behind the icon. Something that isn't desirable.
3840N/A */
3840N/A @Override
0N/A public void paint(Graphics g) {
3840N/A Color bColor;
3840N/A Icon currentI = getIcon();
0N/A
3840N/A if (selected) {
3840N/A bColor = SELECTED_BACKGROUND_COLOR;
3840N/A } else if (getParent() != null) /* Pick background color up from parent (which will come from
3840N/A the JTree we're contained in). */ {
0N/A bColor = getParent().getBackground();
3840N/A } else {
0N/A bColor = getBackground();
3840N/A }
0N/A g.setColor(bColor);
3840N/A if (currentI != null && getText() != null) {
3840N/A int offset = (currentI.getIconWidth() + getIconTextGap());
0N/A
0N/A if (getComponentOrientation().isLeftToRight()) {
0N/A g.fillRect(offset, 0, getWidth() - 1 - offset,
3840N/A getHeight() - 1);
3840N/A } else {
0N/A g.fillRect(0, 0, getWidth() - 1 - offset, getHeight() - 1);
0N/A }
3840N/A } else {
3840N/A g.fillRect(0, 0, getWidth() - 1, getHeight() - 1);
0N/A }
0N/A super.paint(g);
0N/A }
0N/A}