| /* 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 |