1 /* 2 * Copyright (c) 1999, 2011, 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 /* 27 * This source code is provided to illustrate the usage of a given feature 28 * or technique and has been deliberately simplified. Additional steps 29 * required for a production-quality application, such as security checks, 30 * input validation and proper error handling, might not be present in 31 * this sample code. 32 */ 33 34 35 package com.sun.tools.example.debug.gui; 36 37 import javax.swing.*; 38 import javax.swing.event.*; 39 import java.awt.*; 40 import com.sun.jdi.*; 41 import com.sun.tools.example.debug.bdi.*; 42 import com.sun.tools.example.debug.expr.ExpressionParser; 43 import com.sun.tools.example.debug.expr.ParseException; 44 45 public class MonitorTool extends JPanel { 46 47 private static final long serialVersionUID = -645235951031726647L; 48 private ExecutionManager runtime; 49 private ContextManager context; 50 51 private JList list; 52 53 public MonitorTool(Environment env) { 54 super(new BorderLayout()); 55 this.runtime = env.getExecutionManager(); 56 this.context = env.getContextManager(); 57 58 list = new JList(env.getMonitorListModel()); 59 list.setCellRenderer(new MonitorRenderer()); 60 61 JScrollPane listView = new JScrollPane(list); 62 add(listView); 63 64 // Create listener. 65 MonitorToolListener listener = new MonitorToolListener(); 66 list.addListSelectionListener(listener); 67 //### remove listeners on exit! 68 } 69 70 private class MonitorToolListener implements ListSelectionListener { 71 @Override 72 public void valueChanged(ListSelectionEvent e) { 73 int index = list.getSelectedIndex(); 74 if (index != -1) { 75 } 76 } 77 } 78 79 private Value evaluate(String expr) throws ParseException, 80 InvocationException, 81 InvalidTypeException, 82 ClassNotLoadedException, 83 IncompatibleThreadStateException { 84 ExpressionParser.GetFrame frameGetter = 85 new ExpressionParser.GetFrame() { 86 @Override 87 public StackFrame get() 88 throws IncompatibleThreadStateException 89 { 90 try { 91 return context.getCurrentFrame(); 92 } catch (VMNotInterruptedException exc) { 93 throw new IncompatibleThreadStateException(); 94 } 95 } 96 }; 97 return ExpressionParser.evaluate(expr, runtime.vm(), frameGetter); 98 } 99 100 private class MonitorRenderer extends DefaultListCellRenderer { 101 102 @Override 103 public Component getListCellRendererComponent(JList list, 104 Object value, 105 int index, 106 boolean isSelected, 107 boolean cellHasFocus) { 108 109 //### We should indicate the current thread independently of the 110 //### selection, e.g., with an icon, because the user may change 111 //### the selection graphically without affecting the current 112 //### thread. 113 114 super.getListCellRendererComponent(list, value, index, 115 isSelected, cellHasFocus); 116 if (value == null) { 117 this.setText("<unavailable>"); 118 } else { 119 String expr = (String)value; 120 try { 121 Value result = evaluate(expr); 122 this.setText(expr + " = " + result); 123 } catch (ParseException exc) { 124 this.setText(expr + " ? " + exc.getMessage()); 125 } catch (IncompatibleThreadStateException exc) { 126 this.setText(expr + " ..."); 127 } catch (Exception exc) { 128 this.setText(expr + " ? " + exc); 129 } 130 } 131 return this; 132 } 133 } 134 }