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-/* AccessibleRelation.java -- the relation between accessible objects
- Copyright (C) 2002 Free Software Foundation
-
-This file is part of GNU Classpath.
-
-GNU Classpath is free software; you can redistribute it and/or modify
-it under the terms of the GNU General Public License as published by
-the Free Software Foundation; either version 2, or (at your option)
-any later version.
-
-GNU Classpath 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 for more details.
-
-You should have received a copy of the GNU General Public License
-along with GNU Classpath; see the file COPYING. If not, write to the
-Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
-02111-1307 USA.
-
-Linking this library statically or dynamically with other modules is
-making a combined work based on this library. Thus, the terms and
-conditions of the GNU General Public License cover the whole
-combination.
-
-As a special exception, the copyright holders of this library give you
-permission to link this library with independent modules to produce an
-executable, regardless of the license terms of these independent
-modules, and to copy and distribute the resulting executable under
-terms of your choice, provided that you also meet, for each linked
-independent module, the terms and conditions of the license of that
-module. An independent module is a module which is not derived from
-or based on this library. If you modify this library, you may extend
-this exception to your version of the library, but you are not
-obligated to do so. If you do not wish to do so, delete this
-exception statement from your version. */
-
-package javax.accessibility;
-
-/**
- * The relation between one accessible object and one or more other objects.
- * For example, a button may control an action. An AccessibleRelationSet
- * summarizes all relations of the object. This strongly typed "enumeration"
- * supports localized strings. If the constants of this class are not
- * adequate, new ones may be added in a similar matter.
- *
- * @author Eric Blake <ebb9@email.byu.edu>
- * @since 1.2
- * @status updated to 1.4
- */
-public class AccessibleRelation extends AccessibleBundle
-{
- /**
- * Indicates the object labels other objects.
- *
- * @see #getTarget()
- * @see #CONTROLLER_FOR
- * @see #CONTROLLED_BY
- * @see #LABELED_BY
- * @see #MEMBER_OF
- */
- public static final String LABEL_FOR = "labelFor";
-
- /**
- * Indicates the object is labeled by other objects.
- *
- * @see #getTarget()
- * @see #CONTROLLER_FOR
- * @see #CONTROLLED_BY
- * @see #LABEL_FOR
- * @see #MEMBER_OF
- */
- public static final String LABELED_BY = "labeledBy";
-
- /**
- * Indicates an object is a member of a group of target objects.
- *
- * @see #getTarget()
- * @see #CONTROLLER_FOR
- * @see #CONTROLLED_BY
- * @see #LABEL_FOR
- * @see #LABELED_BY
- */
- public static final String MEMBER_OF = "memberOf";
-
- /**
- * Indicates an object is a controller for other objects.
- *
- * @see #getTarget()
- * @see #CONTROLLED_BY
- * @see #LABEL_FOR
- * @see #LABELED_BY
- * @see #MEMBER_OF
- */
- public static final String CONTROLLER_FOR = "controllerFor";
-
- /**
- * Indicates an object is controlled by other objects.
- *
- * @see #getTarget()
- * @see #CONTROLLER_FOR
- * @see #LABEL_FOR
- * @see #LABELED_BY
- * @see #MEMBER_OF
- */
- public static final String CONTROLLED_BY = "controlledBy";
-
- /** Indicates that the label target group has changed. */
- public static final String LABEL_FOR_PROPERTY = "labelForProperty";
-
- /** Indicates that the labelling objects have changed. */
- public static final String LABELED_BY_PROPERTY = "labeledByProperty";
-
- /** Indicates that group membership has changed. */
- public static final String MEMBER_OF_PROPERTY = "memberOfProperty";
-
- /** Indicates that the controller target group has changed. */
- public static final String CONTROLLER_FOR_PROPERTY = "controllerForProperty";
-
- /** Indicates that the controlling objects have changed. */
- public static final String CONTROLLED_BY_PROPERTY = "controlledByProperty";
-
- /** An empty set of targets. */
- private static final Object[] EMPTY_TARGETS = { };
-
- /**
- * The related objects.
- *
- * @see #getTarget()
- * @see #setTarget(Object)
- * @see #setTarget(Object[])
- */
- Object[] targets;
-
- /**
- * Create a new relation with a locale independent key, and no related
- * objects.
- *
- * @param key the name of the role
- * @see #toDisplayString(String, Locale)
- */
- public AccessibleRelation(String key)
- {
- this.key = key;
- targets = EMPTY_TARGETS;
- }
-
- /**
- * Create a new relation with a locale independent key, and a single related
- * object.
- *
- * @param key the name of the role
- * @param target the related object
- * @see #toDisplayString(String, Locale)
- */
- public AccessibleRelation(String key, Object target)
- {
- this.key = key;
- targets = new Object[] { target };
- }
-
- /**
- * Create a new relation with a locale independent key, and the given
- * related objects.
- *
- * @param key the name of the role
- * @param targets the related objects
- * @see #toDisplayString(String, Locale)
- */
- public AccessibleRelation(String key, Object[] targets)
- {
- this.key = key;
- this.targets = targets == null ? EMPTY_TARGETS : targets;
- }
-
- /**
- * Return the key for this relation.
- *
- * @return the key
- * @see #CONTROLLER_FOR
- * @see #CONTROLLED_BY
- * @see #LABEL_FOR
- * @see #LABELED_BY
- * @see #MEMBER_OF
- */
- public String getKey()
- {
- return key;
- }
-
- /**
- * Return the targets of this relation.
- *
- * @return the targets, may be empty, but never null
- */
- public Object[] getTarget()
- {
- return targets;
- }
-
- /**
- * Set the target to a single object.
- *
- * @param target the new target
- */
- public void setTarget(Object target)
- {
- targets = new Object[] { target };
- }
-
- /**
- * Set the target to an array of objects.
- *
- * @param targets the new targets
- */
- public void setTarget(Object[] targets)
- {
- this.targets = targets == null ? EMPTY_TARGETS : targets;
- }
-} // class AccessibleRelation