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IOEvent.java
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/*
* #%L
* SciJava Common shared library for SciJava software.
* %%
* Copyright (C) 2009 - 2026 SciJava developers.
* %%
* 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
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
* #L%
*/
package org.scijava.io.event;
import java.net.URISyntaxException;
import org.scijava.event.SciJavaEvent;
import org.scijava.io.location.FileLocation;
import org.scijava.io.location.Location;
import org.scijava.io.location.LocationService;
/**
* An event indicating that I/O (e.g., opening or saving) has occurred.
*
* @author Curtis Rueden
*/
public abstract class IOEvent extends SciJavaEvent {
/** The data location (source or destination). */
private final Location location;
/** @deprecated use {@link #location} instead */
@Deprecated
private final String descriptor;
/** The data for which I/O took place. */
private final Object data;
/**
* @deprecated use {@link #IOEvent(Location, Object)} instead
*/
@Deprecated
public IOEvent(final String descriptor, final Object data) {
this.location = null;
this.descriptor = descriptor;
this.data = data;
}
public IOEvent(final Location location, final Object data) {
this.location = location;
this.descriptor = null;
this.data = data;
}
/** Gets the data location (source or destination). */
public Location getLocation() {
if (location != null) return location;
try {
return context().service(LocationService.class).resolve(descriptor);
}
catch (final URISyntaxException exc) {
return null;
}
}
/** Gets the data for which I/O took place. */
public Object getData() {
return data;
}
// -- Object methods --
@Override
public String toString() {
return super.toString() + "\n\tlocation = " + location + "\n\tdata = " +
data;
}
/**
* @deprecated use {@link #getLocation()} instead
*/
@Deprecated
public String getDescriptor() {
if (descriptor != null) return descriptor;
if (location instanceof FileLocation) {
final FileLocation fileLocation = (FileLocation) location;
return fileLocation.getFile().getAbsolutePath();
}
return location.getURI().toString();
}
}