loggerview.java

这是一个基于java编写的torrent的P2P源码

/**
 * Copyright (C) 2004, 2005, 2006 Aelitis SAS, All rights Reserved
 *
 * 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 2 of the License.
 *
 * 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 ( see the LICENSE file ).
 *
 * 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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 * AELITIS, SAS au capital de 46,603.30 euros,
 * 8 Allee Lenotre, La Grille Royale, 78600 Le Mesnil le Roi, France.
 */
package org.gudy.azureus2.ui.swt.views;

import java.io.PrintStream;
import java.text.FieldPosition;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.LinkedList;

import org.eclipse.swt.SWT;
import org.eclipse.swt.custom.StyledText;
import org.eclipse.swt.events.SelectionAdapter;
import org.eclipse.swt.events.SelectionEvent;
import org.eclipse.swt.graphics.Color;
import org.eclipse.swt.graphics.GC;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.layout.RowLayout;
import org.eclipse.swt.widgets.*;

import org.gudy.azureus2.core3.config.ParameterListener;
import org.gudy.azureus2.core3.internat.MessageText;
import org.gudy.azureus2.core3.logging.*;
import org.gudy.azureus2.core3.logging.impl.FileLogging;
import org.gudy.azureus2.core3.util.AERunnable;
import org.gudy.azureus2.ui.swt.Messages;
import org.gudy.azureus2.ui.swt.Utils;
import org.gudy.azureus2.ui.swt.mainwindow.Colors;

/**
 * @author TuxPaper
 *
 * @since 2.3.0.5
 */
public class LoggerView extends AbstractIView implements ILogEventListener,
		ParameterListener {
	private final static LogIDs LOGID = LogIDs.GUI;

	private static final int COLOR_INFO = 0;

	private static final int COLOR_WARN = 1;

	private static final int COLOR_ERR = 2;

	private static Color[] colors = null;

	private static final int PREFERRED_LINES = 256;

	private static final int MAX_LINES = 1024 + PREFERRED_LINES;

	private static final SimpleDateFormat dateFormatter;

	private static final FieldPosition formatPos;

	private Display display;

	private Composite panel;

	private StyledText consoleText = null;

	private Button buttonAutoScroll = null;

	private Object[] filter = null;

	// LinkedList is better for removing entries when full
	private LinkedList buffer = new LinkedList();

	private boolean bPaused = false;

	private boolean bRealtime = false;

	private boolean bEnabled = false;

	private boolean bAutoScroll = true;

	// List of components we don't log.  
	// Array represents LogTypes (info, warning, error)
	private ArrayList[] ignoredComponents = new ArrayList[3];

	static {
		dateFormatter = new SimpleDateFormat("[h:mm:ss.SSS] ");
		formatPos = new FieldPosition(0);
	}

	public LoggerView() {
		for (int i = 0; i < ignoredComponents.length; i++) {
			ignoredComponents[i] = new ArrayList();
		}
	}

	public LoggerView(java.util.List initialList) {
		this();
		if (initialList != null)
			buffer.addAll(initialList);
		setEnabled(true);
	}

	/* (non-Javadoc)
	 * @see org.gudy.azureus2.ui.swt.IView#initialize(org.eclipse.swt.widgets.Composite)
	 */
	public void initialize(Composite composite) {
		display = composite.getDisplay();

		Colors.getInstance().addColorsChangedListener(this);
		parameterChanged("Color");

		panel = new Composite(composite, SWT.NULL);
		GridLayout layout = new GridLayout();
		layout.marginHeight = 0;
		layout.marginWidth = 0;
		layout.verticalSpacing = 2;
		layout.numColumns = 2;
		panel.setLayout(layout);

		GridData gd;

		consoleText = new StyledText(panel, SWT.READ_ONLY | SWT.V_SCROLL
				| SWT.H_SCROLL);
		gd = new GridData(GridData.FILL_BOTH);
		gd.horizontalSpan = 2;
		consoleText.setLayoutData(gd);

		// XXX This doesn't work well, but it's better than nothing
		consoleText.addListener(SWT.Resize, new Listener() {
			public void handleEvent(Event event) {
				GC gc = new GC(consoleText);
				int charWidth = gc.getFontMetrics().getAverageCharWidth();
				gc.dispose();

				int areaWidth = consoleText.getBounds().width;
				consoleText.setTabs(areaWidth / 6 / charWidth);
			}
		});

		ScrollBar sb = consoleText.getVerticalBar();
		sb.addSelectionListener(new SelectionAdapter() {
			public void widgetSelected(SelectionEvent e) {
				bAutoScroll = false;
				if (buttonAutoScroll != null && !buttonAutoScroll.isDisposed())
					buttonAutoScroll.setSelection(false);
			}
		});

		Composite cLeft = new Composite(panel, SWT.NULL);
		layout = new GridLayout();
		layout.marginHeight = 0;
		layout.marginWidth = 0;
		layout.verticalSpacing = 1;
		cLeft.setLayout(layout);
		gd = new GridData(SWT.TOP, SWT.LEAD, false, false);
		cLeft.setLayoutData(gd);

		Button buttonPause = new Button(cLeft, SWT.CHECK);
		Messages.setLanguageText(buttonPause, "LoggerView.pause");
		gd = new GridData();
		buttonPause.setLayoutData(gd);
		buttonPause.addSelectionListener(new SelectionAdapter() {
			public void widgetSelected(SelectionEvent e) {
				if (e.widget == null || !(e.widget instanceof Button))
					return;
				Button btn = (Button) e.widget;
				bPaused = btn.getSelection();
				if (!bPaused && buffer != null) {
					refresh();
				}
			}
		});

		Button buttonRealtime = new Button(cLeft, SWT.CHECK);
		Messages.setLanguageText(buttonRealtime, "LoggerView.realtime");
		gd = new GridData();
		buttonRealtime.setLayoutData(gd);
		buttonRealtime.addSelectionListener(new SelectionAdapter() {
			public void widgetSelected(SelectionEvent e) {
				if (e.widget == null || !(e.widget instanceof Button))
					return;
				Button btn = (Button) e.widget;
				bRealtime = btn.getSelection();
			}
		});

		buttonAutoScroll = new Button(cLeft, SWT.CHECK);
		Messages.setLanguageText(buttonAutoScroll, "LoggerView.autoscroll");
		gd = new GridData();
		buttonAutoScroll.setLayoutData(gd);
		buttonAutoScroll.addSelectionListener(new SelectionAdapter() {
			public void widgetSelected(SelectionEvent e) {
				if (e.widget == null || !(e.widget instanceof Button))
					return;
				Button btn = (Button) e.widget;
				bAutoScroll = btn.getSelection();
			}
		});
		buttonAutoScroll.setSelection(true);

		Button buttonClear = new Button(cLeft, SWT.PUSH);
		Messages.setLanguageText(buttonClear, "LoggerView.clear");
		gd = new GridData();
		buttonClear.setLayoutData(gd);
		buttonClear.addSelectionListener(new SelectionAdapter() {
			public void widgetSelected(SelectionEvent e) {
				consoleText.setText("");
			}
		});

		/** FileLogging filter, consisting of a List of types (info, warning, error)
		 * and a checkbox Table of component IDs.
		 */
		final String sFilterPrefix = "ConfigView.section.logging.filter";
		Group gLogIDs = new Group(panel, SWT.NULL);
		Messages.setLanguageText(gLogIDs, "LoggerView.filter");
		layout = new GridLayout();
		layout.marginHeight = 0;
		layout.numColumns = 2;
		gLogIDs.setLayout(layout);
		gd = new GridData();
		gLogIDs.setLayoutData(gd);

		Label label = new Label(gLogIDs, SWT.NONE);
		Messages.setLanguageText(label, "ConfigView.section.logging.level");
		label.setLayoutData(new GridData());

		final Label labelCatFilter = new Label(gLogIDs, SWT.NONE);
		labelCatFilter.setLayoutData(new GridData(GridData.HORIZONTAL_ALIGN_FILL));

		final List listLogTypes = new List(gLogIDs, SWT.BORDER | SWT.SINGLE
				| SWT.V_SCROLL);
		gd = new GridData(SWT.NULL, SWT.BEGINNING, false, false);
		listLogTypes.setLayoutData(gd);

		final int[] logTypes = { LogEvent.LT_INFORMATION, LogEvent.LT_WARNING,
				LogEvent.LT_ERROR };
		for (int i = 0; i < logTypes.length; i++)
			listLogTypes.add(MessageText.getString("ConfigView.section.logging.log"
					+ i + "type"));
		listLogTypes.select(0);

		final LogIDs[] logIDs = FileLogging.configurableLOGIDs;
		//Arrays.sort(logIDs);

		Composite cChecksAndButtons = new Composite(gLogIDs, SWT.NULL);
		layout = new GridLayout(2, false);
		layout.marginHeight = 0;
		layout.marginWidth = 0;
		cChecksAndButtons.setLayout(layout);
		cChecksAndButtons.setLayoutData(new GridData());

		final Composite cChecks = new Composite(cChecksAndButtons, SWT.NULL);
		RowLayout rowLayout = new RowLayout(SWT.VERTICAL);
		rowLayout.wrap = true;
		rowLayout.marginLeft = 0;
		rowLayout.marginRight = 0;
		rowLayout.marginTop = 0;
		rowLayout.marginBottom = 0;
		cChecks.setLayout(rowLayout);

		SelectionAdapter buttonClickListener = new SelectionAdapter() {
			public void widgetSelected(SelectionEvent e) {
				int index = listLogTypes.getSelectionIndex();
				if (index < 0 || index >= logTypes.length)
					return;
				Button item = (Button) e.widget;
				if (item.getSelection())
					ignoredComponents[index].remove(item.getData("LOGID"));
				else
					ignoredComponents[index].add(item.getData("LOGID"));
			}
		};
		for (int i = 0; i < logIDs.length; i++) {
			Button btn = new Button(cChecks, SWT.CHECK);
			btn.setText(MessageText.getString(sFilterPrefix + "." + logIDs[i],
					logIDs[i].toString()));

			btn.setData("LOGID", logIDs[i]);

			btn.addSelectionListener(buttonClickListener);

			if (i == 0) {
				gd = new GridData(SWT.FILL, SWT.FILL, false, false, 1, 2);
				gd.heightHint = (btn.computeSize(SWT.DEFAULT, SWT.DEFAULT).y + 2) * 3;
				cChecks.setLayoutData(gd);
			}
		}

		// Update table when list selection changes
		listLogTypes.addSelectionListener(new SelectionAdapter() {
			public void widgetSelected(SelectionEvent e) {
				int index = listLogTypes.getSelectionIndex();
				if (index < 0 || index >= logTypes.length)
					return;

				labelCatFilter.setText(MessageText.getString(
						"ConfigView.section.logging.showLogsFor", listLogTypes
								.getSelection()));

				Control[] items = cChecks.getChildren();
				for (int i = 0; i < items.length; i++) {
					if (items[i] instanceof Button) {