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ControlPanel.java
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149 lines (139 loc) · 6.16 KB
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/*
* Copyright (c) 2026, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
import java.awt.Component;
import java.awt.GridBagConstraints;
import java.awt.GridBagLayout;
import java.awt.Insets;
import java.io.IOException;
import javax.swing.JButton;
import javax.swing.JLabel;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.JSeparator;
import javax.swing.JTextField;
import javax.swing.JToggleButton;
import javax.swing.SwingConstants;
import static java.awt.GridBagConstraints.HORIZONTAL;
import static java.awt.GridBagConstraints.LINE_END;
import static java.awt.GridBagConstraints.LINE_START;
import static java.awt.GridBagConstraints.NONE;
import static java.awt.GridBagConstraints.VERTICAL;
@SuppressWarnings("serial")
final class ControlPanel extends JPanel {
private static final String FILTER_TOOLTIP_HTML = """
<html>
A filter can be:<br>
• an annotation (<code>@jakarta.ws.rs.GET</code>)<br>
• a fully qualified class name (<code>com.example.Foo</code>)<br>
• a fully qualified method reference (<code>java.lang.HashMap::resize</code>)<br>
• a class initializer (<code>::<clinit></code>)<br>
Use <code><init></code> for constructors.
Separate multiple filters with semicolon.
</html>
""";
private static final String RESUME_UPDATE_TEXT = "Resume Update";
private static final String PAUSE_UPDATE_TEXT = "Pause Update";
private final JLabel filterLabel = new JLabel("Filter:");
private final JTextField filterField = new JTextField("java.lang.String");
private final JButton applyButton = new JButton("Apply");
private final JButton startButton = new JButton("Start");
private final JButton stopButton = new JButton("Stop");
private final JToggleButton pauseToggle = new JToggleButton(PAUSE_UPDATE_TEXT);
private final JSeparator separator = new JSeparator(SwingConstants.VERTICAL);
private final JButton sourceButton = new JButton("Select Java Virtual Machine ...");
private final MethodTracer methodTracer;
ControlPanel(MethodTracer methodTracer) {
this.methodTracer = methodTracer;
setLayout(new GridBagLayout());
addComponents();
wireActions();
this.methodTracer.addUIListener(this::updateButtons);
updateButtons();
}
private void addComponents() {
add(filterLabel, gbc(0, 0, LINE_END, NONE, 0.0));
add(filterField, gbc(1, 0, LINE_START, HORIZONTAL, 1.0));
add(applyButton, gbc(2, 0, LINE_END, NONE, 0.0));
add(startButton, gbc(3, 30, LINE_END, NONE, 0.0));
add(stopButton, gbc(4, 0, LINE_END, NONE, 0.0));
add(pauseToggle, gbc(5, 0, LINE_END, NONE, 0.0));
add(separator, gbc(6, 100, LINE_END, VERTICAL, 0.0));
add(sourceButton, gbc(7, 0, LINE_END, NONE, 0.0));
filterField.setToolTipText(FILTER_TOOLTIP_HTML);
}
private void wireActions() {
applyButton.addActionListener(_ -> methodTracer.setTimingFilter(filterField.getText()));
startButton.addActionListener(_ -> {
try {
methodTracer.start();
methodTracer.setTimingFilter(filterField.getText());
updateButtons();
} catch (IOException e) {
showError(startButton, "Stream Error", "Error when starting a stream:\n" + e.getMessage());
}
});
stopButton.addActionListener(_ -> methodTracer.stop());
pauseToggle.addActionListener(_ -> {
if (pauseToggle.isSelected()) {
methodTracer.pause();
pauseToggle.setText(RESUME_UPDATE_TEXT);
} else {
methodTracer.resume();
pauseToggle.setText(PAUSE_UPDATE_TEXT);
}
});
sourceButton.addActionListener(_ -> {
StreamResource sr = StreamResource.ofDialog();
if (sr != null) {
methodTracer.setStreamResource(sr);
}
});
}
private void updateButtons() {
boolean running = methodTracer.isRunning();
sourceButton.setEnabled(!running);
startButton.setEnabled(!running);
stopButton.setEnabled(running);
applyButton.setEnabled(running);
pauseToggle.setEnabled(running);
if (!running) {
pauseToggle.setSelected(false);
pauseToggle.setText(PAUSE_UPDATE_TEXT);
}
}
private static void showError(Component parent, String title, String message) {
JOptionPane.showMessageDialog(parent, message, title, JOptionPane.ERROR_MESSAGE);
}
private static GridBagConstraints gbc(int x, int leftGap, int anchor, int fill, double weightx) {
GridBagConstraints gbc = new GridBagConstraints();
gbc.gridx = x;
gbc.gridy = 0;
gbc.anchor = anchor;
gbc.fill = fill;
gbc.weightx = weightx;
gbc.insets = new Insets(0, leftGap, 0, 0);
return gbc;
}
}