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This is a backport of OpenJFX 8 to run on Java 7.

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/*
 * Copyright (c) 2011, 2013, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.  Oracle designates this
 * particular file as subject to the "Classpath" exception as provided
 * by Oracle in the LICENSE file that accompanied this code.
 *
 * This code 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
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
 * or visit www.oracle.com if you need additional information or have any
 * questions.
 */

package javafx.beans.value;

/**
 * A writable double value.
 * 
 * @see WritableValue
 * @see WritableNumberValue
 * 
 * 
 * @since JavaFX 2.0
 */
public interface WritableDoubleValue extends WritableNumberValue {

    /**
     * Get the wrapped value.
     * Unlike {@link #getValue()},
     * this method returns primitive double.
     * Needs to be identical to {@link #getValue()}.
     * 
     * @return The current value
     */
    double get();

    /**
     * Set the wrapped value.
     * Unlike {@link #setValue(java.lang.Number) },
     * this method uses primitive double.
     * 
     * @param value
     *            The new value
     */
    void set(double value);

    /**
     * Set the wrapped value.
     * 
     * Note: this method should accept null without throwing an exception,
     * setting "0.0" instead.
     *
     * @param value
     *            The new value
     */
    @Override
    void setValue(Number value);
}