Source Code Cross Referenced for ListSelectionReport.java in  » Swing-Library » jgoodies-data-binding » com » jgoodies » binding » tests » event » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Swing Library » jgoodies data binding » com.jgoodies.binding.tests.event 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /*
002:         * Copyright (c) 2002-2007 JGoodies Karsten Lentzsch. All Rights Reserved.
003:         *
004:         * Redistribution and use in source and binary forms, with or without
005:         * modification, are permitted provided that the following conditions are met:
006:         *
007:         *  o Redistributions of source code must retain the above copyright notice,
008:         *    this list of conditions and the following disclaimer.
009:         *
010:         *  o Redistributions in binary form must reproduce the above copyright notice,
011:         *    this list of conditions and the following disclaimer in the documentation
012:         *    and/or other materials provided with the distribution.
013:         *
014:         *  o Neither the name of JGoodies Karsten Lentzsch nor the names of
015:         *    its contributors may be used to endorse or promote products derived
016:         *    from this software without specific prior written permission.
017:         *
018:         * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
019:         * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
020:         * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
021:         * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
022:         * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
023:         * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
024:         * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
025:         * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
026:         * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
027:         * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
028:         * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
029:         */
030:
031:        package com.jgoodies.binding.tests.event;
032:
033:        import java.util.LinkedList;
034:        import java.util.List;
035:        import java.util.ListIterator;
036:
037:        import javax.swing.event.ListSelectionEvent;
038:        import javax.swing.event.ListSelectionListener;
039:
040:        /**
041:         * A ListDataListener that stores the received ListDataEvents.
042:         *
043:         * @author  Karsten Lentzsch
044:         * @version $Revision: 1.8 $
045:         */
046:        public final class ListSelectionReport implements  ListSelectionListener {
047:
048:            /**
049:             * Holds a list of all received ListSelectionEvent.
050:             */
051:            private final List<ListSelectionEvent> allEvents = new LinkedList<ListSelectionEvent>();
052:
053:            // Implementing the ListSelectionListener Interface ***************************
054:
055:            /**
056:             * Called whenever the value of the selection changes.
057:             *
058:             * @param evt the event that characterizes the change.
059:             */
060:            public void valueChanged(ListSelectionEvent evt) {
061:                allEvents.add(0, evt);
062:            }
063:
064:            // Public Report API *****************************************************
065:
066:            public ListSelectionEvent lastEvent() {
067:                return allEvents.isEmpty() ? null : allEvents.get(0);
068:            }
069:
070:            public List<ListSelectionEvent> eventList() {
071:                return allEvents;
072:            }
073:
074:            public int eventCount() {
075:                return allEvents.size();
076:            }
077:
078:            public boolean hasEvents() {
079:                return !allEvents.isEmpty();
080:            }
081:
082:            // ************************************************************************
083:
084:            /**
085:             * Compares this report's event list with the event list
086:             * of the given object and ignores the source of the contained
087:             * ListDataEvents that may differ.
088:             *
089:             * @param o   the object to compare with
090:             * @return true if equal, false if not
091:             *
092:             * @see java.util.AbstractList#equals(Object)
093:             */
094:            @Override
095:            public boolean equals(Object o) {
096:                if (o == this )
097:                    return true;
098:                if (!(o instanceof  ListSelectionReport))
099:                    return false;
100:
101:                ListIterator<ListSelectionEvent> e1 = eventList()
102:                        .listIterator();
103:                ListIterator<ListSelectionEvent> e2 = ((ListSelectionReport) o)
104:                        .eventList().listIterator();
105:                while (e1.hasNext() && e2.hasNext()) {
106:                    ListSelectionEvent evt1 = e1.next();
107:                    ListSelectionEvent evt2 = e2.next();
108:                    if (!equalListDataEvents(evt1, evt2))
109:                        return false;
110:                }
111:                return !(e1.hasNext() || e2.hasNext());
112:            }
113:
114:            /**
115:             * Poor but valid implementation. Won't be used.
116:             *
117:             * @return this report's hash code
118:             */
119:            @Override
120:            public int hashCode() {
121:                return eventList().size();
122:            }
123:
124:            /**
125:             * Checks and answers whether the two given ListSelectionEvents have
126:             * the same first and last index. The source and adjusting state may differ.
127:             */
128:            private boolean equalListDataEvents(ListSelectionEvent evt1,
129:                    ListSelectionEvent evt2) {
130:                return evt1.getFirstIndex() == evt2.getFirstIndex()
131:                        && evt1.getLastIndex() == evt2.getLastIndex();
132:            }
133:
134:        }
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