/* * Licensed to the Apache Software Foundation (ASF) under one or more * contributor license agreements.  See the NOTICE file distributed with * this work for additional information regarding copyright ownership. * The ASF licenses this file to You under the Apache License, Version 2.0 * (the "License"); you may not use this file except in compliance with * the License.  You may obtain a copy of the License at *  *      http://www.apache.org/licenses/LICENSE-2.0 *  * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */package org.apache.log4j.gui;import org.apache.log4j.helpers.CyclicBuffer;import org.apache.log4j.helpers.LogLog;import org.apache.log4j.Priority;import org.apache.log4j.Category;import org.apache.log4j.Layout;import org.apache.log4j.PatternLayout;import org.apache.log4j.spi.LoggingEvent;import javax.swing.JList;import javax.swing.AbstractListModel;import javax.swing.JFrame;import javax.swing.JButton;import javax.swing.JLabel;import javax.swing.JPanel;import javax.swing.JTextArea;import javax.swing.JScrollPane;import javax.swing.ListCellRenderer;import java.awt.Component;import java.awt.FlowLayout;import java.awt.GridLayout;import javax.swing.BoxLayout;import java.awt.BorderLayout;import java.awt.Dimension;import java.awt.event.ActionListener;import java.awt.event.ActionEvent;import java.awt.Container;import javax.swing.ImageIcon;import java.awt.Image;import java.awt.Toolkit;import java.net.URL;import java.awt.Rectangle;public class JListView extends JList {  static Category cat = Category.getInstance(JListView.class.getName());  //JListViewModel model;  PatternLayout layout;  static LoggingEvent proto = new LoggingEvent("x", cat, Priority.ERROR, 					       "Message ", new Throwable());  public  JListView(JListViewModel model) {    super(model);    layout = new PatternLayout("%r %p %c [%t] -  %m");    //this.setModel(model);    this.setCellRenderer(new MyCellRenderer());    //    setFixedCellWidth(10);    //setFixedCellHeight(20);  }  public  void add(LoggingEvent event) {    ((JListViewModel)getModel()).add(event);  }  /*  public  Dimension getPreferredSize() {    System.out.println("getPreferredSize() called");    return super.getPreferredSize();  }  public  int getScrollableUnitIncrement(Rectangle visibleRect, int orientation,				 int direction) {    System.out.println("getScrollableUnitIncrement called with " + visibleRect +		       "orientation: "+orientation+", direction: "+direction);    return super.getScrollableUnitIncrement(visibleRect, orientation,     				    direction);  }  public  int getScrollableBlockIncrement(Rectangle visibleRect, int orientation,				  int direction) {    System.out.println("getScrollableBlockIncrement called with " + 		       visibleRect + "orientation: "+orientation+		       ", direction: "+direction);    return super.getScrollableBlockIncrement(visibleRect, orientation,     				     direction);  }  */  //public  //boolean getScrollableTracksViewportWidth() {  //System.out.println("getScrollableTracksViewportWidth called.");  //return true;    //boolean b = super.getScrollableTracksViewportWidth();    //System.out.println("result is: "+b);    //return b;  //}    //public  //boolean getScrollableTracksViewportHeight() {   // System.out.println("getScrollableTracksViewportHeight called.");  // return true;     //boolean b = super.getScrollableTracksViewportHeight();     //System.out.println("result is: "+b);     //return b;  //}  //public   //int getFirstVisibleIndex() {  //int r = getFirstVisibleIndex();   // System.out.println("----------getFirstVisibleIndex called, result: "+r);  //return r;  //}  //public  //Object getPrototypeCellValue() {  //return proto;  //}      static public void main(String[] args) {    JFrame frame = new JFrame("JListView test");    Container container = frame.getContentPane();    JListView view = new JListView(new JListViewModel(Integer.parseInt(args[0])));    JScrollPane sp = new JScrollPane(view);    sp.setPreferredSize(new Dimension(250, 80));        container.setLayout(new BoxLayout(container, BoxLayout.X_AXIS));    //container.add(view);    container.add(sp);    JButton b1 = new JButton("Add 1");    JButton b10 = new JButton("Add 10");    JButton b100 = new JButton("Add 100");    JButton b1000 = new JButton("Add 1000");    JButton b10000 = new JButton("Add 10000");    JPanel panel = new JPanel(new GridLayout(0,1));    container.add(panel);    panel.add(b1);    panel.add(b10);    panel.add(b100);    panel.add(b1000);    panel.add(b10000);        AddAction a1 = new AddAction(view, 1);    AddAction a10 = new AddAction(view, 10);    AddAction a100 = new AddAction(view, 100);    AddAction a1000 = new AddAction(view, 1000);    AddAction a10000 = new AddAction(view, 10000);    b1.addActionListener(a1);    b10.addActionListener(a10);    b100.addActionListener(a100);    b1000.addActionListener(a1000);    b10000.addActionListener(a10000);    frame.setVisible(true);    frame.setSize(new Dimension(700,700));    long before = System.currentTimeMillis();    int RUN = 1000;    int i = 0;    while(i++ < RUN) {            LoggingEvent event0 = new LoggingEvent("x", cat, Priority.ERROR, 					     "Message "+i, null);            Throwable t = new Exception("hello "+i);      LoggingEvent event1 = new LoggingEvent("x", cat, Priority.ERROR, 					     "Message "+i, t);            if(i % 10 == 0) {		event1.getThreadName();	view.add(event1);      } else {	event0.getThreadName();	view.add(event0);      }    }    long after = System.currentTimeMillis();    System.out.println("Time taken :"+ ((after-before)*1000/RUN));  }  class MyCellRenderer extends JTextArea implements ListCellRenderer {    Object o = new Object();    int i = 0;    final ImageIcon longIcon = new ImageIcon("RedFlag.gif");    public    MyCellRenderer() {      System.out.println("----------------------");          }    public    int getTabSize()  {      return 2;    }    public Image loadIcon ( String path ) {    Image img = null;    try {      URL url = ClassLoader.getSystemResource(path);      img = (Image) (Toolkit.getDefaultToolkit()).getImage(url);    } catch (Exception e) {      System.out.println("Exception occured: " + e.getMessage() + 			 " - " + e );       }	    return (img);  }    public Component getListCellRendererComponent(JList list,						Object value, 						int index, // cell index						boolean isSelected, 						boolean cellHasFocus) {      //      System.out.println(o + " ============== " + i++);      //LogLog.error("=======", new Exception());      //setIcon(longIcon);      if(value instanceof LoggingEvent) {	LoggingEvent event = (LoggingEvent) value;	String str = layout.format(event);	String t = event.getThrowableInformation();	if(t != null) {	  setText(str + Layout.LINE_SEP + t);	} else {		  setText(str);	}	      } else {	setText(value.toString());      }      return this;    }  }}class JListViewModel extends AbstractListModel {  CyclicBuffer cb;    JListViewModel(int size) {    cb = new CyclicBuffer(size);  }  public  void add(LoggingEvent event) {    //System.out.println("JListViewModel.add called");    cb.add(event);    int j = cb.length();    fireContentsChanged(this, 0, j);  }      public  Object getElementAt(int index) {    return cb.get(index);  }  public  int getSize() {    return cb.length();  }  }class AddAction implements ActionListener {  Thread t;  static int counter = 0;  public  AddAction(JListView view, int burst) {    this.t = new AddThread(view, burst);    t.start();  }      public  void actionPerformed(ActionEvent e) {    System.out.println("Action occured");    synchronized(t) {      t.notify();    }  }  class AddThread extends Thread {    int burst;    JListView view;    Category cat = Category.getInstance("x");        AddThread(JListView view, int burst) {      super();      this.burst = burst;      this.view = view;      setName("AddThread"+burst);    }    public    void run() {      while(true) {	synchronized(this) {	  try {	    this.wait();	  } catch(Exception e) {	  }	}	for(int i = 0; i < burst; i++) {	  LoggingEvent event = new LoggingEvent("x", cat, Priority.DEBUG, 						"Message "+counter, null);	  event.getThreadName();    	  if(counter % 50 == 0) {	    //event.throwable = new Exception("hello "+counter);	  }	  counter++;	  view.add(event);	}      }    }  }}