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 * Copyright (c) 1997, 1999, 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

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 */

package java.beans;

/**

 * <p>

 * This interface is intended to be implemented by, or delegated from, instances

 * of java.beans.beancontext.BeanContext, in order to propagate to its nested hierarchy

 * of java.beans.beancontext.BeanContextChild instances, the current "designTime" property.

 * <p>

 * The JavaBeans specification defines the notion of design time as is a

 * mode in which JavaBeans instances should function during their composition

 * and customization in a interactive design, composition or construction tool,

 * as opposed to runtime when the JavaBean is part of an applet, application,

 * or other live Java executable abstraction.

 *

 * @author Laurence P. G. Cable

 * @since 1.2

 *

 * @see java.beans.beancontext.BeanContext

 * @see java.beans.beancontext.BeanContextChild

 * @see java.beans.beancontext.BeanContextMembershipListener

 * @see java.beans.PropertyChangeEvent

 */

public interface DesignMode {

    /**

     * The standard value of the propertyName as fired from a BeanContext or

     * other source of PropertyChangeEvents.

     */

    static String PROPERTYNAME = "designTime";

    /**

     * Sets the "value" of the "designTime" property.

     * <p>

     * If the implementing object is an instance of java.beans.beancontext.BeanContext,

     * or a subinterface thereof, then that BeanContext should fire a

     * PropertyChangeEvent, to its registered BeanContextMembershipListeners, with

     * parameters:

     * <ul>

     *    <li><code>propertyName</code> - <code>java.beans.DesignMode.PROPERTYNAME</code>

     *    <li><code>oldValue</code> - previous value of "designTime"

     *    <li><code>newValue</code> - current value of "designTime"

     * </ul>

     * Note it is illegal for a BeanContextChild to invoke this method

     * associated with a BeanContext that it is nested within.

     *

     * @param designTime  the current "value" of the "designTime" property

     * @see java.beans.beancontext.BeanContext

     * @see java.beans.beancontext.BeanContextMembershipListener

     * @see java.beans.PropertyChangeEvent

     */

    void setDesignTime(boolean designTime);

    /**

     * A value of true denotes that JavaBeans should behave in design time

     * mode, a value of false denotes runtime behavior.

     *

     * @return the current "value" of the "designTime" property.

     */

    boolean isDesignTime();

}