SampleTreeCellRenderer.java revision 0
0N/A/*
0N/A * Copyright 1997-2005 Sun Microsystems, Inc. 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 *
0N/A * - Neither the name of Sun Microsystems 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
0N/A/*
0N/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;
0N/A
0N/Apublic class SampleTreeCellRenderer extends JLabel implements TreeCellRenderer
0N/A{
0N/A /** Font used if the string to be displayed isn't a font. */
0N/A static protected Font defaultFont;
0N/A /** Icon to use when the item is collapsed. */
0N/A static protected ImageIcon collapsedIcon;
0N/A /** Icon to use when the item is expanded. */
0N/A static protected ImageIcon expandedIcon;
0N/A
0N/A /** Color to use for the background when selected. */
0N/A static protected final Color SelectedBackgroundColor = Color.yellow;//new Color(0, 0, 128);
0N/A
0N/A static
0N/A {
0N/A try {
0N/A defaultFont = new Font("SansSerif", 0, 12);
0N/A } catch (Exception e) {}
0N/A try {
0N/A collapsedIcon = new ImageIcon(SampleTreeCellRenderer.class.getResource("/resources/images/collapsed.gif"));
0N/A expandedIcon = new ImageIcon(SampleTreeCellRenderer.class.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
0N/A /** Whether or not the item that was last configured is selected. */
0N/A protected boolean selected;
0N/A
0N/A /**
0N/A * This is messaged from JTree whenever it needs to get the size
0N/A * of the component or it wants to draw it.
0N/A * This attempts to set the font based on value, which will be
0N/A * a TreeNode.
0N/A */
0N/A public Component getTreeCellRendererComponent(JTree tree, Object value,
0N/A boolean selected, boolean expanded,
0N/A boolean leaf, int row,
0N/A boolean hasFocus) {
0N/A Font font;
0N/A String stringValue = tree.convertValueToText(value, selected,
0N/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. */
0N/A if(expanded)
0N/A setIcon(expandedIcon);
0N/A else if(!leaf)
0N/A setIcon(collapsedIcon);
0N/A else
0N/A setIcon(null);
0N/A
0N/A /* Set the color and the font based on the SampleData userObject. */
0N/A SampleData userObject = (SampleData)((DefaultMutableTreeNode)value)
0N/A .getUserObject();
0N/A if(hasFocus)
0N/A setForeground(Color.cyan);
0N/A else
0N/A setForeground(userObject.getColor());
0N/A if(userObject.getFont() == null)
0N/A setFont(defaultFont);
0N/A else
0N/A setFont(userObject.getFont());
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 /**
0N/A * paint is subclassed to draw the background correctly. JLabel
0N/A * currently does not allow backgrounds other than white, and it
0N/A * will also fill behind the icon. Something that isn't desirable.
0N/A */
0N/A public void paint(Graphics g) {
0N/A Color bColor;
0N/A Icon currentI = getIcon();
0N/A
0N/A if(selected)
0N/A bColor = SelectedBackgroundColor;
0N/A else if(getParent() != null)
0N/A /* Pick background color up from parent (which will come from
0N/A the JTree we're contained in). */
0N/A bColor = getParent().getBackground();
0N/A else
0N/A bColor = getBackground();
0N/A g.setColor(bColor);
0N/A if(currentI != null && getText() != null) {
0N/A int offset = (currentI.getIconWidth() + getIconTextGap());
0N/A
0N/A if (getComponentOrientation().isLeftToRight()) {
0N/A g.fillRect(offset, 0, getWidth() - 1 - offset,
0N/A getHeight() - 1);
0N/A }
0N/A else {
0N/A g.fillRect(0, 0, getWidth() - 1 - offset, getHeight() - 1);
0N/A }
0N/A }
0N/A else
0N/A g.fillRect(0, 0, getWidth()-1, getHeight()-1);
0N/A super.paint(g);
0N/A }
0N/A}