| /******************************************************************************* |
| * Copyright (c) 2008 Oracle. All rights reserved. |
| * This program and the accompanying materials are made available under the |
| * terms of the Eclipse Public License v1.0, which accompanies this distribution |
| * and is available at http://www.eclipse.org/legal/epl-v10.html. |
| * |
| * Contributors: |
| * Oracle - initial API and implementation |
| ******************************************************************************/ |
| package org.eclipse.jpt.utility.internal; |
| |
| import java.io.Serializable; |
| |
| /** |
| * Provide a container for passing a flag that can be changed by the recipient. |
| * @see SynchronizedBoolean |
| */ |
| public class BooleanHolder |
| implements Cloneable, Serializable |
| { |
| /** Backing boolean. */ |
| private boolean value; |
| |
| private static final long serialVersionUID = 1L; |
| |
| |
| // ********** constructors ********** |
| |
| /** |
| * Create a boolean holder with the specified initial value. |
| */ |
| public BooleanHolder(boolean value) { |
| super(); |
| this.value = value; |
| } |
| |
| /** |
| * Create a boolean holder with an initial value of false. |
| */ |
| public BooleanHolder() { |
| this(false); |
| } |
| |
| |
| // ********** accessors ********** |
| |
| /** |
| * Return the current boolean value. |
| */ |
| public boolean getValue() { |
| return this.value; |
| } |
| |
| /** |
| * Return whether the current boolean value is true. |
| */ |
| public boolean isTrue() { |
| return this.value; |
| } |
| |
| /** |
| * Return whether the current boolean value is false. |
| */ |
| public boolean isFalse() { |
| return ! this.value; |
| } |
| |
| /** |
| * Return whether the current boolean value is the specified value. |
| */ |
| public boolean is(boolean v) { |
| return this.value == v; |
| } |
| |
| /** |
| * Set the boolean value. |
| */ |
| public void setValue(boolean value) { |
| this.value = value; |
| } |
| |
| /** |
| * Set the boolean value to true. |
| */ |
| public void setTrue() { |
| this.value = true; |
| } |
| |
| /** |
| * Set the boolean value to false. |
| */ |
| public void setFalse() { |
| this.value = false; |
| } |
| |
| |
| // ********** standard methods ********** |
| |
| @Override |
| public Object clone() { |
| try { |
| return super.clone(); |
| } catch (CloneNotSupportedException ex) { |
| throw new InternalError(); |
| } |
| } |
| |
| @Override |
| public boolean equals(Object o) { |
| if (o instanceof BooleanHolder) { |
| return this.value == ((BooleanHolder) o).value; |
| } |
| return false; |
| } |
| |
| @Override |
| public int hashCode() { |
| return this.value ? 1 : 0; |
| } |
| |
| @Override |
| public String toString() { |
| return '[' + String.valueOf(this.value) + ']'; |
| } |
| |
| } |