01: /*
02: * Copyright 2004-2006 Sun Microsystems, Inc. All Rights Reserved.
03: * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
04: *
05: * This code is free software; you can redistribute it and/or modify it
06: * under the terms of the GNU General Public License version 2 only, as
07: * published by the Free Software Foundation. Sun designates this
08: * particular file as subject to the "Classpath" exception as provided
09: * by Sun 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
22: * CA 95054 USA or visit www.sun.com if you need additional information or
23: * have any questions.
24: */
25:
26: package sun.tools.jconsole;
27:
28: import java.awt.*;
29: import java.awt.event.*;
30: import java.beans.*;
31:
32: import javax.swing.*;
33:
34: public abstract class Tab extends JPanel {
35: private String name;
36: private Worker worker;
37:
38: protected VMPanel vmPanel;
39:
40: private SwingWorker<?, ?> prevSW;
41:
42: public Tab(VMPanel vmPanel, String name) {
43: this .vmPanel = vmPanel;
44: this .name = name;
45: }
46:
47: public SwingWorker<?, ?> newSwingWorker() {
48: return null;
49: }
50:
51: public void update() {
52: final ProxyClient proxyClient = vmPanel.getProxyClient();
53: if (!proxyClient.hasPlatformMXBeans()) {
54: throw new UnsupportedOperationException(
55: "Platform MXBeans not registered in MBeanServer");
56: }
57:
58: SwingWorker<?, ?> sw = newSwingWorker();
59: // schedule SwingWorker to run only if the previous
60: // SwingWorker has finished its task and it hasn't started.
61: if (prevSW == null || prevSW.isDone()) {
62: if (sw == null
63: || sw.getState() == SwingWorker.StateValue.PENDING) {
64: prevSW = sw;
65: if (sw != null) {
66: sw.execute();
67: }
68: }
69: }
70: }
71:
72: public synchronized void dispose() {
73: if (worker != null)
74: worker.stopWorker();
75:
76: // Subclasses will override to clean up
77: }
78:
79: protected VMPanel getVMPanel() {
80: return vmPanel;
81: }
82:
83: OverviewPanel[] getOverviewPanels() {
84: return null;
85: }
86:
87: public synchronized void workerAdd(Runnable job) {
88: if (worker == null) {
89: worker = new Worker(name + "-"
90: + vmPanel.getConnectionName());
91: worker.start();
92: }
93: worker.add(job);
94: }
95:
96: public Dimension getPreferredSize() {
97: return new Dimension(700, 500);
98: }
99: }
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