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319 lines
8.5 KiB
Java
319 lines
8.5 KiB
Java
/* AccessibleRelation.java -- the relation between accessible objects
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Copyright (C) 2002, 2005 Free Software Foundation
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This file is part of GNU Classpath.
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GNU Classpath is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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GNU Classpath is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GNU Classpath; see the file COPYING. If not, write to the
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Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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02110-1301 USA.
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Linking this library statically or dynamically with other modules is
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making a combined work based on this library. Thus, the terms and
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conditions of the GNU General Public License cover the whole
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combination.
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As a special exception, the copyright holders of this library give you
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permission to link this library with independent modules to produce an
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executable, regardless of the license terms of these independent
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modules, and to copy and distribute the resulting executable under
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terms of your choice, provided that you also meet, for each linked
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independent module, the terms and conditions of the license of that
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module. An independent module is a module which is not derived from
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or based on this library. If you modify this library, you may extend
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this exception to your version of the library, but you are not
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obligated to do so. If you do not wish to do so, delete this
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exception statement from your version. */
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package javax.accessibility;
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import java.util.Locale;
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/**
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* The relation between one accessible object and one or more other objects.
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* For example, a button may control an action. An AccessibleRelationSet
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* summarizes all relations of the object. This strongly typed "enumeration"
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* supports localized strings. If the constants of this class are not
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* adequate, new ones may be added in a similar matter.
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*
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* @author Eric Blake (ebb9@email.byu.edu)
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* @since 1.2
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* @status updated to 1.4
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*/
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public class AccessibleRelation extends AccessibleBundle
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{
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/**
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* Indicates the object labels other objects.
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*
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* @see #getTarget()
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* @see #CONTROLLER_FOR
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* @see #CONTROLLED_BY
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* @see #LABELED_BY
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* @see #MEMBER_OF
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*/
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public static final String LABEL_FOR;
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/**
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* Indicates the object is labeled by other objects.
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*
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* @see #getTarget()
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* @see #CONTROLLER_FOR
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* @see #CONTROLLED_BY
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* @see #LABEL_FOR
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* @see #MEMBER_OF
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*/
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public static final String LABELED_BY;
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/**
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* Indicates an object is a member of a group of target objects.
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*
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* @see #getTarget()
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* @see #CONTROLLER_FOR
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* @see #CONTROLLED_BY
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* @see #LABEL_FOR
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* @see #LABELED_BY
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*/
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public static final String MEMBER_OF;
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/**
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* Indicates an object is a controller for other objects.
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*
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* @see #getTarget()
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* @see #CONTROLLED_BY
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* @see #LABEL_FOR
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* @see #LABELED_BY
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* @see #MEMBER_OF
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*/
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public static final String CONTROLLER_FOR;
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/**
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* Indicates an object is controlled by other objects.
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*
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* @see #getTarget()
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* @see #CONTROLLER_FOR
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* @see #LABEL_FOR
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* @see #LABELED_BY
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* @see #MEMBER_OF
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*/
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public static final String CONTROLLED_BY;
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/** Indicates that the label target group has changed. */
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public static final String LABEL_FOR_PROPERTY = "labelForProperty";
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/** Indicates that the labelling objects have changed. */
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public static final String LABELED_BY_PROPERTY = "labeledByProperty";
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/** Indicates that group membership has changed. */
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public static final String MEMBER_OF_PROPERTY = "memberOfProperty";
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/** Indicates that the controller target group has changed. */
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public static final String CONTROLLER_FOR_PROPERTY = "controllerForProperty";
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/** Indicates that the controlling objects have changed. */
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public static final String CONTROLLED_BY_PROPERTY = "controlledByProperty";
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/**
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* Indicates that an object is a child of another object.
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* @since 1.5
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*/
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public static final String CHILD_NODE_OF = "childNodeOf";
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/**
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* Indicates that the ancestry relationship has changed.
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* @since 1.5
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*/
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public static final String CHILD_NODE_OF_PROPERTY = "childNodeOfProperty";
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/**
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* Indicates that an object is embedded by another object.
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* @since 1.5
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*/
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public static final String EMBEDDED_BY = "embeddedBy";
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/**
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* Indicates that the {@link #EMBEDDED_BY} property changed.
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* @since 1.5
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*/
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public static final String EMBEDDED_BY_PROPERTY = "embeddedByProperty";
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/**
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* Indicates that an object embeds another object.
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* @since 1.5
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*/
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public static final String EMBEDS = "embeds";
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/**
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* Indicates that the {@link #EMBEDS} property changed.
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* @since 1.5
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*/
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public static final String EMBEDS_PROPERTY = "embedsProperty";
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/**
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* Indicates that one object directly follows another object,
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* as in a paragraph flow.
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* @since 1.5
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*/
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public static final String FLOWS_FROM = "flowsFrom";
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/**
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* Indicates that the {@link #FLOWS_FROM} property changed.
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* @since 1.5
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*/
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public static final String FLOWS_FROM_PROPERTY = "flowsFromProperty";
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/**
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* Indicates that one object comes directly before another object,
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* as in a paragraph flow.
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* @since 1.5
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*/
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public static final String FLOWS_TO = "flowsTo";
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/**
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* Indicates that the {@link #FLOWS_TO} property changed.
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* @since 1.5
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*/
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public static final String FLOWS_TO_PROPERTY = "flowsToProperty";
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/**
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* Indicates that one object is a parent window of another object.
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* @since 1.5
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*/
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public static final String PARENT_WINDOW_OF = "parentWindowOf";
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/**
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* Indicates that the {@link #PARENT_WINDOW_OF} property changed.
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* @since 1.5
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*/
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public static final String PARENT_WINDOW_OF_PROPERTY = "parentWindowOfProperty";
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/**
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* Indicates that one object is a subwindow of another object.
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* @since 1.5
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*/
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public static final String SUBWINDOW_OF = "subwindowOf";
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/**
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* Indicates that the {@link #SUBWINDOW_OF} property changed.
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* @since 1.5
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*/
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public static final String SUBWINDOW_OF_PROPERTY = "subwindowOfProperty";
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/** An empty set of targets. */
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private static final Object[] EMPTY_TARGETS = { };
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static
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{
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// not constants in JDK
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LABEL_FOR = "labelFor";
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LABELED_BY = "labeledBy";
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MEMBER_OF = "memberOf";
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CONTROLLER_FOR = "controllerFor";
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CONTROLLED_BY = "controlledBy";
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}
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/**
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* The related objects.
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*
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* @see #getTarget()
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* @see #setTarget(Object)
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* @see #setTarget(Object[])
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*/
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Object[] targets;
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/**
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* Create a new relation with a locale independent key, and no related
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* objects.
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*
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* @param key the name of the role
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* @see #toDisplayString(String, Locale)
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*/
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public AccessibleRelation(String key)
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{
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this.key = key;
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targets = EMPTY_TARGETS;
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}
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/**
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* Create a new relation with a locale independent key, and a single related
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* object.
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*
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* @param key the name of the role
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* @param target the related object
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* @see #toDisplayString(String, Locale)
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*/
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public AccessibleRelation(String key, Object target)
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{
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this.key = key;
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targets = new Object[] { target };
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}
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/**
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* Create a new relation with a locale independent key, and the given
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* related objects.
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*
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* @param key the name of the role
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* @param targets the related objects
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* @see #toDisplayString(String, Locale)
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*/
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public AccessibleRelation(String key, Object[] targets)
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{
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this.key = key;
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this.targets = targets == null ? EMPTY_TARGETS : targets;
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}
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/**
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* Return the key for this relation.
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*
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* @return the key
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* @see #CONTROLLER_FOR
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* @see #CONTROLLED_BY
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* @see #LABEL_FOR
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* @see #LABELED_BY
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* @see #MEMBER_OF
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*/
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public String getKey()
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{
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return key;
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}
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/**
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* Return the targets of this relation.
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*
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* @return the targets, may be empty, but never null
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*/
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public Object[] getTarget()
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{
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return targets;
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}
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/**
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* Set the target to a single object.
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*
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* @param target the new target
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*/
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public void setTarget(Object target)
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{
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targets = new Object[] { target };
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}
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/**
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* Set the target to an array of objects.
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*
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* @param targets the new targets
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*/
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public void setTarget(Object[] targets)
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{
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this.targets = targets == null ? EMPTY_TARGETS : targets;
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}
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} // class AccessibleRelation
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