001: /*
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003: *
004: * Copyright 1997-2007 Sun Microsystems, Inc. All rights reserved.
005: *
006: * The contents of this file are subject to the terms of either the GNU
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008: * Development and Distribution License("CDDL") (collectively, the
009: * "License"). You may not use this file except in compliance with the
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020: * License Header, with the fields enclosed by brackets [] replaced by
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022: * "Portions Copyrighted [year] [name of copyright owner]"
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025: *
026: * The Original Software is NetBeans. The Initial Developer of the Original
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040: */
041:
042: package javax.swing;
043:
044: import org.netbeans.performance.Benchmark;
045: import java.awt.*;
046: import javax.swing.border.*;
047:
048: /**
049: * The Benchmark measuring the difference between creating new JLabel
050: * (a typical CellRenderer component) and setting up existing JLabel
051: * for usage as a cell renderer in a JList.
052: *
053: * @author Petr Nejedly
054: * @version 1.0
055: */
056: public class ListCellTest extends Benchmark {
057:
058: public ListCellTest(String name) {
059: super (name);
060: }
061:
062: private static JList list = new JList();
063:
064: /**
065: * Create <i>count</i> new JLabels and give them a name;
066: */
067: public void testCreateNew() throws Exception {
068: int count = getIterationCount();
069: doIt(count, new CreatingListCellRenderer());
070: }
071:
072: public void testSetupShared() throws Exception {
073: int count = getIterationCount();
074: doIt(count, new SharingListCellRenderer());
075: }
076:
077: private void doIt(int count, ListCellRenderer source) {
078: Component[] arr = new Component[count];
079: while (--count >= 0) {
080: arr[count] = source.getListCellRendererComponent(list,
081: "Hello" + count, count, count < 1, count < 1);
082: }
083: }
084:
085: public static void main(String[] args) {
086: simpleRun(ListCellTest.class);
087: }
088:
089: private static class SharingListCellRenderer implements
090: ListCellRenderer {
091: private static JLabel stamp;
092: private static Border noFocusBorder = new EmptyBorder(1, 1, 1,
093: 1);
094:
095: public Component getListCellRendererComponent(JList list,
096: Object value, int index, boolean isSelected,
097: boolean cellHasFocus) {
098:
099: if (stamp == null)
100: stamp = new JLabel();
101:
102: if (isSelected) {
103: stamp.setBackground(list.getSelectionBackground());
104: stamp.setForeground(list.getSelectionForeground());
105: } else {
106: stamp.setBackground(list.getBackground());
107: stamp.setForeground(list.getForeground());
108: }
109:
110: stamp.setText(value.toString());
111: stamp.setFont(list.getFont());
112: stamp.setBorder((cellHasFocus) ? UIManager
113: .getBorder("List.focusCellHighlightBorder")
114: : noFocusBorder);
115:
116: return stamp;
117: }
118: }
119:
120: private static class CreatingListCellRenderer implements
121: ListCellRenderer {
122: private static Border noFocusBorder = new EmptyBorder(1, 1, 1,
123: 1);
124:
125: public Component getListCellRendererComponent(JList list,
126: Object value, int index, boolean isSelected,
127: boolean cellHasFocus) {
128:
129: JLabel stamp = new JLabel();
130:
131: if (isSelected) {
132: stamp.setBackground(list.getSelectionBackground());
133: stamp.setForeground(list.getSelectionForeground());
134: } else {
135: stamp.setBackground(list.getBackground());
136: stamp.setForeground(list.getForeground());
137: }
138:
139: stamp.setText(value.toString());
140: stamp.setFont(list.getFont());
141: stamp.setBorder((cellHasFocus) ? UIManager
142: .getBorder("List.focusCellHighlightBorder")
143: : noFocusBorder);
144:
145: return stamp;
146: }
147: }
148: }
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