Source Code Cross Referenced for UpdateAdapter.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 java.io.InputStream;
030:
031:        /**
032:         * A simple <code>UpdateListener</code> implementation which can 
033:         * check whether or not the document loading succeeded.
034:         *
035:         * @version $Id: UpdateAdapter.java,v 1.5 2006/04/21 06:39:49 st125089 Exp $
036:         */
037:        public class UpdateAdapter implements  UpdateListener {
038:            /**
039:             * Set to true if the load complete method is called
040:             * Set to false when loadStarting is called.
041:             */
042:            protected boolean loadComplete = false;
043:
044:            /**
045:             * Set to true if the loadingFailed method is called.
046:             * Set to false when loadStarting is called
047:             */
048:            protected boolean loadingFailed = false;
049:
050:            /**
051:             * Set to true if the loadStarting method is called
052:             */
053:            protected boolean loadStarting = false;
054:
055:            /**
056:             * The last recorded loadingFailed exception
057:             */
058:            protected Exception loadingFailedException = null;
059:
060:            /**
061:             * Invoked when a node's rendering is about to be modified
062:             *
063:             * @param node the node which is about to be modified
064:             */
065:            public void modifyingNodeRendering(ModelNode node) {
066:            }
067:
068:            /**
069:             * @return true if the loading has failed.
070:             */
071:            public boolean hasLoadingFailed() {
072:                return loadingFailed;
073:            }
074:
075:            /**
076:             * Invoked when a node has been inserted into the tree
077:             *
078:             * @param node the newly inserted node
079:             */
080:            public void nodeInserted(final ModelNode node) {
081:            }
082:
083:            /**
084:             * Invoked when a node is about to be modified
085:             *
086:             * @param node the node which is about to be modified
087:             */
088:            public void modifyingNode(final ModelNode node) {
089:            }
090:
091:            /**
092:             * Invoked when a node was just modified
093:             *
094:             * @param node the node which was modified
095:             */
096:            public void modifiedNode(final ModelNode node) {
097:            }
098:
099:            /**
100:             * Invoked when the node has finished loading. 
101:             *
102:             * @param node the <code>node</code> for which loading
103:             *        is complete.
104:             */
105:            public void loadComplete(final ModelNode node) {
106:                if (node instanceof  DocumentNode) {
107:                    loadComplete = true;
108:                }
109:            }
110:
111:            /**
112:             * Invoked when a document error happened before finishing loading.
113:             *
114:             * @param documentNode the <code>DocumentNode</code> for which loading
115:             *        has failed.
116:             * @param error the exception which describes the reason why loading
117:             *        failed.
118:             */
119:            public void loadingFailed(final DocumentNode documentNode,
120:                    final Exception error) {
121:                loadingFailed = true;
122:                loadingFailedException = error;
123:            }
124:
125:            /**
126:             * Invoked when the document starts loading
127:             *
128:             * @param documentNode the <code>DocumentNode</code> for which loading
129:             *        is starting
130:             * @param is the <code>InputStream</code> from which SVG content
131:             *        is loaded.
132:             */
133:            public void loadStarting(final DocumentNode documentNode,
134:                    final InputStream is) {
135:                loadStarting = true;
136:                loadingFailed = false;
137:                loadComplete = false;
138:            }
139:
140:            /**
141:             * Invoked when the input node has started loading
142:             *
143:             * @param node the <code>ModelNode</code> for which loading
144:             *        has started.
145:             */
146:            public void loadBegun(final ModelNode node) {
147:            }
148:
149:            /**
150:             * Invoked when a string has been appended, during a load
151:             * phase. This is only used when parsing a document and is
152:             * used in support of progressive download, like the other
153:             * loadXXX methods.
154:             *
155:             * @param node the <code>ModelNode</code> on which text has been
156:             *        inserted.
157:             */
158:            public void textInserted(final ModelNode node) {
159:            }
160:
161:            /**
162:             * @return true if a document loading started and then failed
163:             */
164:            public boolean loadSuccess() {
165:                System.err.println(">>>>>>>>>>>> loadStarting : "
166:                        + loadStarting);
167:                System.err.println(">>>>>>>>>>>> loadComplete : "
168:                        + loadComplete);
169:                System.err.println(">>>>>>>>>>>> loadingFailed: "
170:                        + loadingFailed);
171:
172:                return loadStarting && loadComplete && !loadingFailed;
173:            }
174:
175:            /**
176:             * @return the last loadingFailed exception
177:             */
178:            public Exception getLoadingFailedException() {
179:                return loadingFailedException;
180:            }
181:        }
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