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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 * 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.
 *
 * 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.
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package sun.jvm.hotspot.ui;

import java.util.*;

import java.awt.*;
import java.awt.event.*;

import javax.swing.*;
import javax.swing.table.*;

import sun.jvm.hotspot.oops.ObjectHistogram;
import sun.jvm.hotspot.oops.ObjectHistogramElement;
import sun.jvm.hotspot.oops.Klass;

import sun.jvm.hotspot.ui.table.LongCellRenderer;
import sun.jvm.hotspot.ui.table.SortableTableModel;
import sun.jvm.hotspot.ui.table.SortHeaderCellRenderer;
import sun.jvm.hotspot.ui.table.SortHeaderMouseAdapter;
import sun.jvm.hotspot.ui.table.TableModelComparator;

import sun.jvm.hotspot.ui.action.*;

import com.sun.java.swing.ui.StatusBar;
import com.sun.java.swing.ui.CommonToolBar;

import com.sun.java.swing.action.ActionManager;
import com.sun.java.swing.action.DelegateAction;

Displays the results of an ObjectHistogram run in a JTable, with a button to display all objects of that type
/** * Displays the results of an ObjectHistogram run in a JTable, with a * button to display all objects of that type */
public class ObjectHistogramPanel extends JPanel implements ActionListener { private ObjectHistogramTableModel dataModel; private ObjectHistogramToolBar toolbar; private StatusBar statusBar; private JTable table; private java.util.List listeners; public ObjectHistogramPanel(ObjectHistogram histo) { dataModel = new ObjectHistogramTableModel(histo); statusBar = new StatusBar(); table = new JTable(dataModel, new ObjectHistogramColummModel()); table.setSelectionMode(ListSelectionModel.SINGLE_SELECTION); table.addMouseListener(new MouseAdapter() { public void mouseClicked(MouseEvent evt) { if (evt.getClickCount() == 2) { fireShowObjectsOfType(); } } }); JTableHeader header = table.getTableHeader(); header.setDefaultRenderer(new SortHeaderCellRenderer(header, dataModel)); header.addMouseListener(new SortHeaderMouseAdapter(table, dataModel)); setLayout(new BorderLayout()); toolbar = new ObjectHistogramToolBar(statusBar); add(toolbar, BorderLayout.NORTH); add(new JScrollPane(table), BorderLayout.CENTER); add(statusBar, BorderLayout.SOUTH); registerActions(); } private class ObjectHistogramToolBar extends CommonToolBar { private JTextField searchTF; public ObjectHistogramToolBar(StatusBar status) { super(HSDBActionManager.getInstance(), status); } protected void addComponents() { searchTF = new JTextField(); searchTF.setToolTipText("Find in Class Description"); // Pressing Enter on the text field will search InputMap im = searchTF.getInputMap(); im.put(KeyStroke.getKeyStroke("ENTER"), "enterPressed"); ActionMap am = searchTF.getActionMap(); am.put("enterPressed", manager.getAction(FindAction.VALUE_COMMAND)); add(searchTF); addButton(manager.getAction(FindAction.VALUE_COMMAND)); addButton(manager.getAction(ShowAction.VALUE_COMMAND)); } public String getFindText() { return searchTF.getText(); } } private class ObjectHistogramColummModel extends DefaultTableColumnModel { private final String LABEL_SIZE = "Size"; private final String LABEL_COUNT = "Count"; private final String LABEL_DESC = "Class Description"; public ObjectHistogramColummModel() { // Should actually get the line metrics for int PREF_WIDTH = 80; int MAX_WIDTH = 100; int HUGE_WIDTH = 140; LongCellRenderer lcRender = new LongCellRenderer(); TableColumn column; // Size column = new TableColumn(0, PREF_WIDTH); column.setHeaderValue(LABEL_SIZE); column.setMaxWidth(MAX_WIDTH); column.setResizable(false); column.setCellRenderer(lcRender); addColumn(column); // Count column = new TableColumn(1, PREF_WIDTH); column.setHeaderValue(LABEL_COUNT); column.setMaxWidth(MAX_WIDTH); column.setResizable(false); column.setCellRenderer(lcRender); addColumn(column); // Description column = new TableColumn(2, HUGE_WIDTH); column.setHeaderValue(LABEL_DESC); addColumn(column); } }
A table model which encapsulates the ObjectHistogram
/** * A table model which encapsulates the ObjectHistogram */
private class ObjectHistogramTableModel extends SortableTableModel { private String[] columnNames = { "Size", "Count", "Class Description" }; private Class[] columnClasses = { Long.class, Long.class, String.class }; public ObjectHistogramTableModel(ObjectHistogram histo) { // Set the rows elements = histo.getElements(); setComparator(new ObjectHistogramComparator(this)); } public int getColumnCount() { return columnNames.length; } public int getRowCount() { return elements.size(); } public String getColumnName(int col) { return columnNames[col]; } public Class getColumnClass(int col) { return columnClasses[col]; } public Object getValueAt(int row, int col) { return getValueForColumn(getElement(row), col); } public Object getValueForColumn(Object obj, int col) { ObjectHistogramElement el = (ObjectHistogramElement)obj; switch (col) { case 0: return new Long(el.getSize()); case 1: return new Long(el.getCount()); case 2: return el.getDescription(); default: throw new RuntimeException("Index (" + col + ") out of bounds"); } } public ObjectHistogramElement getElement(int index) { return (ObjectHistogramElement) elements.get(index); } private class ObjectHistogramComparator extends TableModelComparator { public ObjectHistogramComparator(ObjectHistogramTableModel model) { super(model); }
Returns the value for the comparing object for the column.
Params:
  • obj – Object that was passed for Comparator
  • column – the column to retrieve
/** * Returns the value for the comparing object for the * column. * * @param obj Object that was passed for Comparator * @param column the column to retrieve */
public Object getValueForColumn(Object obj, int column) { ObjectHistogramTableModel omodel = (ObjectHistogramTableModel)model; return omodel.getValueForColumn(obj, column); } } } // // ActionListener implementation and actions support // public void actionPerformed(ActionEvent evt) { String command = evt.getActionCommand(); if (command.equals(ShowAction.VALUE_COMMAND)) { fireShowObjectsOfType(); } else if (command.equals(FindAction.VALUE_COMMAND)) { findObject(); } } protected void registerActions() { registerAction(FindAction.VALUE_COMMAND); registerAction(ShowAction.VALUE_COMMAND); } private void registerAction(String actionName) { ActionManager manager = ActionManager.getInstance(); DelegateAction action = manager.getDelegateAction(actionName); action.addActionListener(this); } public interface Listener { public void showObjectsOfType(Klass type); } public void addPanelListener(Listener listener) { if (listeners == null) { listeners = new ArrayList(); } listeners.add(listener); } public void removePanelListener(Listener listener) { if (listeners != null) { listeners.remove(listener); } } //-------------------------------------------------------------------------------- // Internals only below this point //
Find and select the row that contains the text in the find field starting from the current selected row. Uses a linear search from the current row. Could be optimized withing the model and internal representation.
/** * Find and select the row that contains the text in the find field starting * from the current selected row. * * Uses a linear search from the current row. Could be optimized withing the * model and internal representation. */
private void findObject() { String findText = toolbar.getFindText(); if (findText == null || findText.equals("")) { return; } TableModel model = table.getModel(); int row = table.getSelectedRow(); if (row == model.getRowCount()) { row = 0; } else { // Start at the row after the selected row. row++; } String value; for (int i = row; i < model.getRowCount(); i++) { value = (String)model.getValueAt(i, 2); if (value != null && value.startsWith(findText)) { table.setRowSelectionInterval(i, i); Rectangle cellBounds = table.getCellRect(i, 0, true); table.scrollRectToVisible(cellBounds); return; } } // Wrap the table to search in the top rows. for (int i = 0; i < row; i++) { value = (String)model.getValueAt(i, 2); if (value != null && value.startsWith(findText)) { table.setRowSelectionInterval(i, i); Rectangle cellBounds = table.getCellRect(i, 0, true); table.scrollRectToVisible(cellBounds); return; } } } private void fireShowObjectsOfType() { int i = table.getSelectedRow(); if (i < 0) { return; } ObjectHistogramElement el = dataModel.getElement(i); for (Iterator iter = listeners.iterator(); iter.hasNext(); ) { Listener listener = (Listener) iter.next(); listener.showObjectsOfType(el.getKlass()); } } public static void main(String[] args) { } }