bundles/org.eclipse.ui.workbench/Eclipse UI/org/eclipse/ui/internal/commands/ActiveConfiguration.java

/************************************************************************
Copyright (c) 2003 IBM Corporation and others.
All rights reserved.   This program and the accompanying materials
are made available under the terms of the Common Public License v1.0
which accompanies this distribution, and is available at
http://www.eclipse.org/legal/cpl-v10.html

Contributors:
	IBM - Initial implementation
************************************************************************/

package org.eclipse.ui.internal.commands;

public final class ActiveConfiguration implements Comparable {

	private final static int HASH_FACTOR = 17;
	private final static int HASH_INITIAL = 27;

	public static ActiveConfiguration create(String plugin, String value)
		throws IllegalArgumentException {
		return new ActiveConfiguration(plugin, value);
	}

	private String plugin;
	private String value;
	
	private ActiveConfiguration(String plugin, String value)
		throws IllegalArgumentException {
		super();
		
		if (value == null)
			throw new IllegalArgumentException();
		
		this.plugin = plugin;
		this.value = value;
	}
	
	public int compareTo(Object object) {
		ActiveConfiguration activeConfiguration = (ActiveConfiguration) object;
		int compareTo = Util.compare(plugin, activeConfiguration.plugin);
		
		if (compareTo == 0)		
			compareTo = value.compareTo(activeConfiguration.value);			
		
		return compareTo;	
	}
	
	public boolean equals(Object object) {
		if (!(object instanceof ActiveConfiguration))
			return false;

		ActiveConfiguration activeConfiguration = (ActiveConfiguration) object;	
		return Util.equals(plugin, activeConfiguration.plugin) && value.equals(activeConfiguration.value);
	}

	public String getPlugin() {
		return plugin;
	}

	public String getValue() {
		return value;
	}

	public int hashCode() {
		int result = HASH_INITIAL;
		result = result * HASH_FACTOR + Util.hashCode(plugin);
		result = result * HASH_FACTOR + value.hashCode();
		return result;
	}
	
	public String toString() {
		return value;	
	}
}