1 /* 2 * Copyright (c) 2004, 2012, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. Oracle designates this 8 * particular file as subject to the "Classpath" exception as provided 9 * by Oracle in the LICENSE file that accompanied this code. 10 * 11 * This code is distributed in the hope that it will be useful, but WITHOUT 12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 14 * version 2 for more details (a copy is included in the LICENSE file that 15 * accompanied this code). 16 * 17 * You should have received a copy of the GNU General Public License version 18 * 2 along with this work; if not, write to the Free Software Foundation, 19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 20 * 21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 22 * or visit www.oracle.com if you need additional information or have any 23 * questions. 24 */ 25 26 package sun.tools.jconsole.inspector; 27 28 import java.awt.Color; 29 import java.awt.Component; 30 import java.lang.reflect.Array; 31 import java.util.Collection; 32 import java.util.Map; 33 import javax.swing.JEditorPane; 34 import javax.swing.JScrollPane; 35 36 class XArrayDataViewer { 37 38 private XArrayDataViewer() {} 39 40 public static boolean isViewableValue(Object value) { 41 return Utils.canBeRenderedAsArray(value); 42 } 43 44 public static Component loadArray(Object value) { 45 Component comp = null; 46 if (isViewableValue(value)) { 47 Object[] arr; 48 if (value instanceof Collection) { 49 arr = ((Collection<?>) value).toArray(); 50 } else if (value instanceof Map) { 51 arr = ((Map<?,?>) value).entrySet().toArray(); 52 } else if (value instanceof Object[]) { 53 arr = (Object[]) value; 54 } else { 55 int length = Array.getLength(value); 56 arr = new Object[length]; 57 for (int i = 0; i < length; i++) { 58 arr[i] = Array.get(value, i); 59 } 60 } 61 JEditorPane arrayEditor = new JEditorPane(); 62 arrayEditor.setContentType("text/html"); 63 arrayEditor.setEditable(false); 64 Color evenRowColor = arrayEditor.getBackground(); 65 int red = evenRowColor.getRed(); 66 int green = evenRowColor.getGreen(); 67 int blue = evenRowColor.getBlue(); 68 String evenRowColorStr = 69 "rgb(" + red + "," + green + "," + blue + ")"; 70 Color oddRowColor = new Color( 71 red < 20 ? red + 20 : red - 20, 72 green < 20 ? green + 20 : green - 20, 73 blue < 20 ? blue + 20 : blue - 20); 74 String oddRowColorStr = 75 "rgb(" + oddRowColor.getRed() + "," + 76 oddRowColor.getGreen() + "," + 77 oddRowColor.getBlue() + ")"; 78 Color foreground = arrayEditor.getForeground(); 79 String textColor = String.format("%06x", 80 foreground.getRGB() & 0xFFFFFF); 81 StringBuilder sb = new StringBuilder(); 82 sb.append("<html><body text=#").append(textColor).append("><table width=\"100%\">"); 83 for (int i = 0; i < arr.length; i++) { 84 if (i % 2 == 0) { 85 sb.append("<tr style=\"background-color: ") 86 .append(evenRowColorStr).append("\"><td><pre>") 87 .append(arr[i] == null ? 88 arr[i] : htmlize(arr[i].toString())) 89 .append("</pre></td></tr>"); 90 } else { 91 sb.append("<tr style=\"background-color: ") 92 .append(oddRowColorStr).append("\"><td><pre>") 93 .append(arr[i] == null ? 94 arr[i] : htmlize(arr[i].toString())) 95 .append("</pre></td></tr>"); 96 } 97 } 98 if (arr.length == 0) { 99 sb.append("<tr style=\"background-color: ") 100 .append(evenRowColorStr).append("\"><td></td></tr>"); 101 } 102 sb.append("</table></body></html>"); 103 arrayEditor.setText(sb.toString()); 104 JScrollPane scrollp = new JScrollPane(arrayEditor); 105 comp = scrollp; 106 } 107 return comp; 108 } 109 110 private static String htmlize(String value) { 111 return value.replace("&", "&").replace("<", "<"); 112 } 113 }