Application: gvSIG desktop

/**

 * gvSIG. Desktop Geographic Information System.

 *

 * Copyright (C) 2007-2013 gvSIG Association.

 *

 * This program is free software; you can redistribute it and/or modify it under

 * the terms of the GNU General Public License as published by the Free Software

 * Foundation; either version 3 of the License, or (at your option) any later

 * version.

 *

 * This program 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 for more

 * details.

 *

 * You should have received a copy of the GNU General Public License along with

 * this program; if not, write to the Free Software Foundation, Inc., 51

 * Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.

 *

 * For any additional information, do not hesitate to contact us at info AT

 * gvsig.com, or visit our website www.gvsig.com.

 */

/*

 * AUTHORS (In addition to CIT):

 * 2009 {}  {{Task}}

 */

package org.gvsig.app.extension.dispose;

import java.awt.Dimension;

import java.awt.event.ActionEvent;

import java.lang.management.ManagementFactory;

import java.lang.management.MemoryMXBean;

import java.util.ArrayList;

import java.util.Collections;

import java.util.List;

import java.util.Set;

import javax.swing.JScrollPane;

import javax.swing.JTable;

import javax.swing.JTextPane;

import javax.swing.ListSelectionModel;

import javax.swing.SwingUtilities;

import javax.swing.event.ListSelectionEvent;

import javax.swing.table.AbstractTableModel;

import javax.swing.table.DefaultTableColumnModel;

import javax.swing.table.TableColumn;

import javax.swing.table.TableColumnModel;

import org.gvsig.andami.plugins.Extension;

import org.gvsig.tools.ToolsLocator;

import org.gvsig.tools.dispose.Disposable;

import org.gvsig.tools.dispose.DisposableInfo;

import org.gvsig.tools.dispose.DisposableManager;

import org.gvsig.tools.exception.BaseException;

import org.gvsig.tools.swing.api.ToolsSwingLocator;

import org.gvsig.tools.swing.api.ToolsSwingUtils;

import org.gvsig.tools.swing.api.windowmanager.WindowManager;

import org.slf4j.Logger;

import org.slf4j.LoggerFactory;

/**

 * An extension to view and manage {@link Disposable} objects which are still

 * bound.

 *

 * TODO: remove this extension and replace with a better one, maybe based on

 * scripting.

 *

 * @author 2009- <a href="cordinyana@gvsig.org">C?sar Ordi?ana</a> - gvSIG team

 */

public class DisposableManagementExtension extends Extension {

    public static String SHOW_COMMAND = "tools-devel-disposables-show-pendings";

    public static String DISPOSE_ALL_COMMAND = "tools-devel-disposables-free-all";

    private static final Logger LOG

            = LoggerFactory.getLogger(DisposableManagementExtension.class);

    @Override

    public void initialize() {

        // Nothing to do

    }

    @Override

    public void postInitialize() {

        super.postInitialize();

    }

    @Override

    public void execute(String actionCommand) {

        if (DISPOSE_ALL_COMMAND.equals(actionCommand)) {

            disposeAll();

        } else {

            if (SHOW_COMMAND.equals(actionCommand)) {

                DisposablesDoList panel = new DisposablesDoList();

                panel.showPanel();

            }

        }

    }

    private void disposeAll() {

        DisposableManager manager;

        manager = ToolsLocator.getDisposableManager();

        try {

            manager.releaseAll();

        } catch (BaseException ex) {

            LOG.error("Error disposing all bound disposable objects", ex);

        }

    }

    @Override

    public boolean isEnabled() {

        return true;

    }

    @Override

    public boolean isVisible() {

        return true;

    }

    class DisposablesDoList extends DisposablesDoListLayout {

        private DisposableManager manager;

        private JTable disposablesTable = null;

        private JTextPane infoTextArea = null;

        public DisposablesDoList() {

            manager = ToolsLocator.getDisposableManager();

            initComponents();

            SwingUtilities.invokeLater(() -> {

                refreshList();

                updateMemoryUsage();

            });

        }

        private void initComponents() {

            this.setPreferredSize(new Dimension(600, 550));

            this.disposablesTable = new JTable(new DisposablesTableModel());

            this.disposablesTable.setSelectionMode(ListSelectionModel.MULTIPLE_INTERVAL_SELECTION);

//            DefaultTableColumnModel columnModel = new DefaultTableColumnModel();

//            columnModel.addColumn(new TableColumn(0, ToolsSwingUtils.cols2px(5)));

//            columnModel.addColumn(new TableColumn(1, ToolsSwingUtils.cols2px(12)));

//            columnModel.addColumn(new TableColumn(2, ToolsSwingUtils.cols2px(12)));

//            columnModel.addColumn(new TableColumn(3, ToolsSwingUtils.cols2px(25)));

//            this.disposablesTable.setColumnModel(columnModel);

            this.infoTextArea = new JTextPane();

            this.infoTextArea.setContentType("text/html");

            JScrollPane listScroller = new JScrollPane(this.disposablesTable);

            JScrollPane infoScroller = new JScrollPane(this.infoTextArea);

            this.splitPanel.setLeftComponent(listScroller);

            this.splitPanel.setRightComponent(infoScroller);

//            Dimension dim = this.splitPanel.getPreferredSize();

//            dim.height = dim.height / 2;

//            this.disposablesTable.setPreferredSize(dim);

//            this.splitPanel.invalidate();

            this.closeButton.addActionListener((ActionEvent arg0) -> {

                closeWindow();

            });

            this.closeButton.setEnabled(true);

            this.disposeAllButton.addActionListener((ActionEvent e) -> {

                disposeAll();

                refreshList();

                updateMemoryUsage();

            });

            this.disposeAllButton.setEnabled(true);

            this.disposeButton.addActionListener((ActionEvent e) -> {

                disposeSelecteds();

                refreshList();

                updateMemoryUsage();

            });

            this.disposeButton.setEnabled(true);

            this.disposablesTable.getSelectionModel().addListSelectionListener((ListSelectionEvent arg0) -> {

                ListItemSelected();

                updateMemoryUsage();

            });

            this.disposablesTable.setEnabled(true);

            this.refreshButton.addActionListener((ActionEvent arg0) -> {

                refreshList();

                updateMemoryUsage();

            });

            this.refreshButton.setEnabled(true);

        }

        private void refreshList() {

            fillTable();

        }

        private void ListItemSelected() {

            DisposablesTableModel model = (DisposablesTableModel) this.disposablesTable.getModel();

            DisposableInfo info = model.get(this.disposablesTable.getSelectedRow());

            if( info==null ) {

                this.infoTextArea.setText("");

            } else {

                this.infoTextArea.setText(toHTML(info));

                this.infoTextArea.setCaretPosition(0);

            }

        }

        private void fillTable() {

            Set<DisposableInfo> disposables = (Set<DisposableInfo>) manager.getBoundDisposables();

            this.messageLabel.setText("Disposables " + disposables.size());

            this.disposablesTable.setModel(new DisposablesTableModel(new ArrayList<>(disposables)));            this.messageLabel.setText("Pending " + disposables.size());

            this.infoTextArea.setText("");

        }

        private void updateMemoryUsage() {

            Runtime rt = Runtime.getRuntime();

            this.lblTotalMemory.setText(String.valueOf(rt.totalMemory()/1024));

            this.lblMaxMemory.setText(String.valueOf(rt.maxMemory()/1024));

            this.lblFreeMemory.setText(String.valueOf(rt.freeMemory()/1024));

            this.lblActiveThreads.setText(String.valueOf(Thread.activeCount()));

            int objectPendingFinalizationCount = -1;

            try {

                MemoryMXBean memBean = ManagementFactory.getMemoryMXBean() ;

                objectPendingFinalizationCount = memBean.getObjectPendingFinalizationCount();

            } catch(ThreadDeath th) {

            }

            this.lblObjectPendingFinalization.setText(String.valueOf(objectPendingFinalizationCount));

        }

        private class DisposablesTableModel extends AbstractTableModel {

            private List<DisposableInfo> disposables; 

            private final String[] columnNames;

            private final Class[] columnClass;

            public DisposablesTableModel() {

                this(Collections.EMPTY_LIST);

            }

            public DisposablesTableModel(List<DisposableInfo> disposables) {

                this.disposables = disposables;

                this.columnNames = new String[] {"Refs.", "Class", "Full class", "To str."};

                this.columnClass = new Class[] {Integer.class, String.class, String.class, String.class};

            }

            public DisposableInfo get(int rowIndex) {

                try {

                    return this.disposables.get(rowIndex);

                } catch(Throwable th) {

                    return null;

                }

            }

            @Override

            public int getRowCount() {

                return this.disposables.size();

            }

            @Override

            public int getColumnCount() {

                return this.columnNames.length;

            }

            @Override

            public String getColumnName(int columnIndex) {

                return this.columnNames[columnIndex];

            }

            @Override

            public Class<?> getColumnClass(int columnIndex) {

                return this.columnClass[columnIndex];

            }

            @Override

            public Object getValueAt(int rowIndex, int columnIndex) {

                DisposableInfo info = this.disposables.get(rowIndex);

                switch(columnIndex) {

                    case 0:

                        return info.getReferencesCount();

                    case 1:

                        try {

                            return info.getDisposable().getClass().getSimpleName();

                        } catch(Throwable th) {

                            return "(unknown)";

                        }

                    case 2:

                        try {

                            return info.getDisposable().getClass().getName();

                        } catch(Throwable th) {

                            return "(unknown)";

                        }

                    case 3:

                        try {

                            return info.getDisposable().toString();

                        } catch(Throwable th) {

                            return "(unknown)";

                        }

                }

                return null;

            }

        }

        public String toHTML(DisposableInfo  disposableInfo) {

            StringBuilder buffer = new StringBuilder();

            Disposable disposable = disposableInfo.getDisposable();

            buffer.append("<b>Class</b>: ").append(disposable.getClass().getSimpleName()).append("<br>\n");

            buffer.append("<b>Full class</b>: ").append(disposable.getClass().getName()).append("<br>\n");

            buffer.append("<b>References</b>: ").append(disposableInfo.getReferencesCount()).append("<br>\n");

            buffer.append("<b>toString</b>: ").append(disposable.toString()).append("<br>\n");

            buffer.append("<b>Binded from (stack)</b>:<br>\n");

            try {

                StackTraceElement[] stackTrace = disposableInfo

                        .getBindDisposableStackTrace();

                for (StackTraceElement stackTrace1 : stackTrace) {

                    buffer.append("&nbsp;&nbsp;").append(stackTrace1.toString().replaceAll("[<]", "&lt;").replace("[>]", "&gt;")).append("<br>\n");

                }

            } catch (Exception ex) {

                buffer.append("<br>\n<br>\nError showing stack.<br>\n").append(ex.getMessage());

            }

            return buffer.toString();

        }

        public void closeWindow() {

            this.setVisible(false);

        }

        public void disposeAll() {

            try {

                manager.releaseAll();

            } catch (BaseException ex) {

                LOG.error("Error disposing all bound disposable objects", ex);

            }

        }

        public void disposeSelecteds() {

            DisposablesTableModel model = (DisposablesTableModel) this.disposablesTable.getModel();

            for (int row : this.disposablesTable.getSelectedRows()) {

                DisposableInfo info = model.get(row);

                this.manager.release(info.getDisposable());

            }

            refreshList();

        }

        public void showPanel() {

            WindowManager wm = ToolsSwingLocator.getWindowManager();

            wm.showWindow(this, "Disposable do list", WindowManager.MODE.WINDOW);

        }

//        private class ActionListenerImpl implements ActionListener {

//

//            public ActionListenerImpl() {

//            }

//

//            @Override

//            public void actionPerformed(ActionEvent e) {

//                disposeSelecteds();

//                refreshList();

//                updateMemoryUsage();

//            }

//        }

    }

}