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SciJava Common is a shared library for SciJava software. It provides a plugin framework, with an extensible mechanism for service discovery, backed by its own annotation processor, so that plugins can be loaded dynamically. It is used by downstream projects in the SciJava ecosystem, such as ImageJ and SCIFIO.

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/*
 * #%L
 * SciJava Common shared library for SciJava software.
 * %%
 * Copyright (C) 2009 - 2016 Board of Regents of the University of
 * Wisconsin-Madison, Broad Institute of MIT and Harvard, and Max Planck
 * Institute of Molecular Cell Biology and Genetics.
 * %%
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 * 
 * 1. Redistributions of source code must retain the above copyright notice,
 *    this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright notice,
 *    this list of conditions and the following disclaimer in the documentation
 *    and/or other materials provided with the distribution.
 * 
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 * #L%
 */

package org.scijava.event;

import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.Locale;

/**
 * Caches details of a particular {@link SciJavaEvent}, without saving the event
 * itself (since doing so could leave dangling references).
 * 
 * @author Curtis Rueden
 */
public class EventDetails {

	private final Date timestamp;
	private final Class eventType;
	private final String eventString;

	public EventDetails(final SciJavaEvent event) {
		timestamp = new Date();
		eventType = event.getClass();
		eventString = event.toString();
	}

	// -- EventDetails methods --

	public Class getEventType() {
		return eventType;
	}

	public Date getTimestamp() {
		return timestamp;
	}

	public String getEventString() {
		return eventString;
	}

	public String toHTML(final boolean bold) {
		final StringBuilder sb = new StringBuilder();
		sb.append("");

		// append timestamp
		sb.append("[");
		sb.append(timestampAsString());
		sb.append("] ");

		// append event class name
		sb.append("");
		sb.append(eventType.getSimpleName());
		sb.append("");

		// append event string
		sb.append("");
		sb.append(htmlize(eventString));
		sb.append("");

		if (bold) sb.append("");
		sb.append("");
		return sb.toString();
	}

	// -- Helper methods --

	private String timestampAsString() {
		final SimpleDateFormat formatter =
			new SimpleDateFormat("hh:mm:ss.SS", Locale.getDefault());
		final String dateStr = formatter.format(timestamp);
		return dateStr;
	}

	private String htmlize(final String s) {
		final String tab = "    ";
		return s.replaceAll("\\t", tab).replaceAll("\\n", "
");
	}

}