Source Code Cross Referenced for ModelEvent.java in  » 6.0-JDK-Modules » j2me » com » sun » perseus » model » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » 6.0 JDK Modules » j2me » com.sun.perseus.model 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /*
002:         *
003:         *
004:         * Copyright  1990-2007 Sun Microsystems, Inc. All Rights Reserved.
005:         * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER
006:         * 
007:         * This program is free software; you can redistribute it and/or
008:         * modify it under the terms of the GNU General Public License version
009:         * 2 only, as published by the Free Software Foundation.
010:         * 
011:         * This program is distributed in the hope that it will be useful, but
012:         * WITHOUT ANY WARRANTY; without even the implied warranty of
013:         * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
014:         * General Public License version 2 for more details (a copy is
015:         * included at /legal/license.txt).
016:         * 
017:         * You should have received a copy of the GNU General Public License
018:         * version 2 along with this work; if not, write to the Free Software
019:         * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
020:         * 02110-1301 USA
021:         * 
022:         * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa
023:         * Clara, CA 95054 or visit www.sun.com if you need additional
024:         * information or have any questions.
025:         */
026:
027:        package com.sun.perseus.model;
028:
029:        import org.w3c.dom.events.Event;
030:        import org.w3c.dom.events.EventTarget;
031:
032:        /**
033:         * Events happen on a specific target and have a specific type.
034:         *
035:         * @see EventListener
036:         * @see EventSupport
037:         *
038:         * @version $Id: ModelEvent.java,v 1.5 2006/06/29 10:47:33 ln156897 Exp $
039:         */
040:        public class ModelEvent implements  Event {
041:            /**
042:             * Used when for undefined key char events
043:             */
044:            public static final char CHAR_UNDEFINED = 0xFFFF;
045:
046:            /**
047:             * The event's type
048:             */
049:            protected String type;
050:
051:            /**
052:             * The event target
053:             */
054:            protected ModelNode target;
055:
056:            /**
057:             * The current event target.
058:             */
059:            protected EventTarget currentTarget;
060:
061:            /**
062:             * The event's anchor is used to ease the implementation 
063:             * of hyperlinking. 
064:             *
065:             * @see EventSupport
066:             */
067:            protected Anchor anchor;
068:
069:            /**
070:             * Controls whether or not the event's dispatch
071:             * should be stopped
072:             */
073:            protected boolean stopPropagation;
074:
075:            /**
076:             * Time stamp. The time is in document simple time, i.e., in the
077:             * root container's time.
078:             */
079:            protected Time eventTime = Time.UNRESOLVED;
080:
081:            /**
082:             * Used to provide the repeat iteration in a repeat event
083:             */
084:            protected int repeatCount = 0;
085:
086:            /**
087:             * Used to provide the key character in a key event
088:             */
089:            protected char keyChar = CHAR_UNDEFINED;
090:
091:            /**
092:             * @param type the event's type. Should not be null.
093:             * @param target the event's target. Should not be null.
094:             */
095:            public ModelEvent(final String type, final ModelNode target) {
096:                if (type == null) {
097:                    throw new NullPointerException();
098:                }
099:
100:                this .type = type;
101:
102:                if (target == null) {
103:                    throw new NullPointerException();
104:                }
105:
106:                this .target = target;
107:
108:                // Set the event time.
109:                this .eventTime = target.ownerDocument.timeContainerRootSupport
110:                        .getCurrentTime();
111:            }
112:
113:            /**
114:             * @param type the event's type. Should not be null
115:             * @param target the event's target. Should not be null.
116:             * @param keyChar the event's character key
117:             */
118:            public ModelEvent(final String type, final ModelNode target,
119:                    final char keyChar) {
120:                this (type, target);
121:                this .keyChar = keyChar;
122:            }
123:
124:            /**
125:             * @return this event's type
126:             */
127:            public String getType() {
128:                return type;
129:            }
130:
131:            /**
132:             * @return the key that was stroked.
133:             */
134:            public char getKeyChar() {
135:                return keyChar;
136:            }
137:
138:            /**
139:             * @return this node's target
140:             */
141:            public EventTarget getTarget() {
142:                return target;
143:            }
144:
145:            /**
146:             * @return this node's current target
147:             */
148:            public EventTarget getCurrentTarget() {
149:                return currentTarget;
150:            }
151:
152:            /**
153:             * Stops propagation of the Event during dispatch. See the
154:             * DOM Level 2 Event model specification for details.
155:             */
156:            public void stopPropagation() {
157:                stopPropagation = true;
158:            }
159:
160:            /**
161:             * @return true if propagation should stop. false otherwise
162:             */
163:            public boolean getStopPropagation() {
164:                return stopPropagation;
165:            }
166:
167:            /**
168:             * @param anchor the Event's associated Anchor
169:             * @throws IllegalStateException if the anchor property is not null
170:             */
171:            public void setAnchor(final Anchor anchor) {
172:                if (this .anchor == null) {
173:                    this .anchor = anchor;
174:                } else {
175:                    throw new IllegalStateException();
176:                }
177:            }
178:
179:            /**
180:             * @return the current value of the anchor property
181:             */
182:            public Anchor getAnchor() {
183:                return anchor;
184:            }
185:        }
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