Source Code Cross Referenced for EditBoxModel.java in  » J2EE » Jaffa » org » jaffa » presentation » portlet » widgets » model » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » J2EE » Jaffa » org.jaffa.presentation.portlet.widgets.model 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /*
002:         * ====================================================================
003:         * JAFFA - Java Application Framework For All
004:         *
005:         * Copyright (C) 2002 JAFFA Development Group
006:         *
007:         *     This library is free software; you can redistribute it and/or
008:         *     modify it under the terms of the GNU Lesser General Public
009:         *     License as published by the Free Software Foundation; either
010:         *     version 2.1 of the License, or (at your option) any later version.
011:         *
012:         *     This library is distributed in the hope that it will be useful,
013:         *     but WITHOUT ANY WARRANTY; without even the implied warranty of
014:         *     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
015:         *     Lesser General Public License for more details.
016:         *
017:         *     You should have received a copy of the GNU Lesser General Public
018:         *     License along with this library; if not, write to the Free Software
019:         *     Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
020:         *
021:         * Redistribution and use of this software and associated documentation ("Software"),
022:         * with or without modification, are permitted provided that the following conditions are met:
023:         * 1.	Redistributions of source code must retain copyright statements and notices.
024:         *         Redistributions must also contain a copy of this document.
025:         * 2.	Redistributions in binary form must reproduce the above copyright notice,
026:         * 	this list of conditions and the following disclaimer in the documentation
027:         * 	and/or other materials provided with the distribution.
028:         * 3.	The name "JAFFA" must not be used to endorse or promote products derived from
029:         * 	this Software without prior written permission. For written permission,
030:         * 	please contact mail to: jaffagroup@yahoo.com.
031:         * 4.	Products derived from this Software may not be called "JAFFA" nor may "JAFFA"
032:         * 	appear in their names without prior written permission.
033:         * 5.	Due credit should be given to the JAFFA Project (http://jaffa.sourceforge.net).
034:         *
035:         * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESSED OR IMPLIED
036:         * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
037:         * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
038:         * DISCLAIMED.  IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
039:         * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
040:         * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
041:         * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
042:         * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
043:         * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
044:         * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
045:         * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
046:         * SUCH DAMAGE.
047:         * ====================================================================
048:         */
049:
050:        package org.jaffa.presentation.portlet.widgets.model;
051:
052:        import org.jaffa.datatypes.Currency;
053:        import org.jaffa.datatypes.*;
054:        import org.jaffa.metadata.*;
055:        import java.util.*;
056:        import org.apache.log4j.*;
057:        import org.jaffa.datatypes.exceptions.UnknownDataTypeRuntimeException;
058:        import org.jaffa.presentation.portlet.widgets.model.exceptions.DataTypeMismatchRuntimeException;
059:
060:        /** Model for the EditBox widget.
061:         */
062:        public class EditBoxModel extends WidgetModel {
063:            private static Logger log = Logger.getLogger(EditBoxModel.class);
064:
065:            // Default Rules For TextBox
066:            private String m_stringCase = FieldMetaData.MIXED_CASE;
067:            private int m_maxLen = 50;
068:            private int m_minLen = 0;
069:            private String m_dataType = Defaults.STRING;
070:            private FieldMetaData m_meta = null;
071:            private Boolean m_mandatory = null;
072:            private boolean m_modelChanged = false;
073:
074:            // Internal Context
075:            private String m_value = null;
076:
077:            /** Default constructor.
078:             */
079:            public EditBoxModel() {
080:            }
081:
082:            /** Creates a model..
083:             * @param meta The meta object to use for getting the layout info.
084:             * This may throw the UnknownDataTypeRuntimeException in case the input 'meta' object has an unsupported DataType.
085:             */
086:            public EditBoxModel(FieldMetaData meta) {
087:                this (null, meta);
088:            }
089:
090:            /** Creates a model initialized to the input value.
091:             * @param obj The initial value.
092:             */
093:            public EditBoxModel(Object obj) {
094:                this (obj, null);
095:            }
096:
097:            /** Creates a model initialized to the input value.
098:             * @param obj The initial value.
099:             * @param meta The meta object to use for getting the layout info.
100:             * This may throw the UnknownDataTypeRuntimeException in case the input 'meta' object has an unsupported DataType.
101:             * This may throw the DataTypeMismatchRuntimeException in case there is a mismatch in the Datatypes of the inputs.
102:             */
103:            public EditBoxModel(Object obj, FieldMetaData meta) {
104:                m_meta = meta;
105:                if (obj != null) {
106:                    // Make sure this is a real datatype
107:                    m_dataType = Defaults.getDataType(obj);
108:                    if (m_dataType == null) {
109:                        String str = "Unsupported Data Type : "
110:                                + obj.getClass().getName();
111:                        log.error(str);
112:                        throw new UnknownDataTypeRuntimeException(str);
113:                    }
114:                } else if (meta != null) {
115:                    m_dataType = meta.getDataType();
116:                } else {
117:                    String str = "Unknown Data Type: Null parameters passed";
118:                    log.error(str);
119:                    throw new UnknownDataTypeRuntimeException(str);
120:                }
121:
122:                // Assign the maxLen only if the meta object is passed
123:                // Otherwise let it remain the default value 50 
124:                if (meta != null)
125:                    m_maxLen = meta.getWidth();
126:
127:                // Try to infer default meta data if none was passed
128:                if (meta == null) {
129:                    if (obj instanceof  DateOnly)
130:                        meta = new DateOnlyFieldMetaData();
131:                    else if (obj instanceof  DateTime)
132:                        meta = new DateTimeFieldMetaData();
133:                    else if (obj instanceof  Long)
134:                        meta = new IntegerFieldMetaData();
135:                    else if (obj instanceof  Double)
136:                        meta = new DecimalFieldMetaData();
137:                    else if (obj instanceof  Currency)
138:                        meta = new CurrencyFieldMetaData();
139:                    else
140:                        // Default to string
141:                        meta = new StringFieldMetaData();
142:                }
143:
144:                // Make sure Object and MetaData are the same data type!
145:                if (!m_dataType.equals(meta.getDataType())) {
146:                    String str = "Object Data Type Mismatch. Object = "
147:                            + obj.getClass().getName() + " is '" + m_dataType
148:                            + "', MetaData = '" + meta.getDataType() + "'";
149:                    log.error(str);
150:                    throw new DataTypeMismatchRuntimeException(str);
151:                }
152:
153:                // If a string, get the string meta data properties out
154:                if (m_dataType.equals(Defaults.STRING)) {
155:                    StringFieldMetaData metaStr = (StringFieldMetaData) meta;
156:                    if (metaStr.getCaseType() != null)
157:                        m_stringCase = metaStr.getCaseType();
158:
159:                    // Set the object value using the string formatter.
160:                    if (obj == null)
161:                        m_value = "";
162:                    else
163:                        m_value = Formatter.format((String) obj);
164:
165:                } else if (m_dataType.equals(Defaults.DATEONLY)) {
166:                    // Set the object value using the string formatter.
167:                    DateOnlyFieldMetaData metaDO = (DateOnlyFieldMetaData) meta;
168:                    // @todo
169:                    if (obj == null)
170:                        m_value = "";
171:                    else
172:                        m_value = Formatter.format((DateOnly) obj, metaDO
173:                                .getLayout());
174:                } else if (m_dataType.equals(Defaults.DATETIME)) {
175:                    // Set the object value using the string formatter.
176:                    DateTimeFieldMetaData metaDT = (DateTimeFieldMetaData) meta;
177:                    // @todo
178:                    if (obj == null)
179:                        m_value = "";
180:                    else
181:                        m_value = Formatter.format((DateTime) obj, metaDT
182:                                .getLayout());
183:                } else if (m_dataType.equals(Defaults.INTEGER)) {
184:                    // Set the object value using the Integer formatter.
185:                    IntegerFieldMetaData metaInt = (IntegerFieldMetaData) meta;
186:                    if (obj == null)
187:                        m_value = "";
188:                    else
189:                        m_value = Formatter.format((Long) obj, metaInt
190:                                .getLayout());
191:                } else if (m_dataType.equals(Defaults.DECIMAL)) {
192:                    // Set the object value using the Decimal formatter.
193:                    DecimalFieldMetaData metaDec = (DecimalFieldMetaData) meta;
194:                    if (obj == null)
195:                        m_value = "";
196:                    else
197:                        m_value = Formatter.format((Double) obj, metaDec
198:                                .getLayout());
199:                } else if (m_dataType.equals(Defaults.CURRENCY)) {
200:                    // Set the object value using the Decimal formatter.
201:                    CurrencyFieldMetaData metaCurr = (CurrencyFieldMetaData) meta;
202:                    if (obj == null)
203:                        m_value = "";
204:                    else
205:                        m_value = Formatter.format((Currency) obj, metaCurr
206:                                .getLayout());
207:                } else {
208:                    // Default : Get the string version of the model.
209:                    if (obj == null)
210:                        m_value = "";
211:                    else
212:                        m_value = obj.toString();
213:                }
214:
215:                if (log.isDebugEnabled())
216:                    log.debug("Initialize Widget To Value: " + m_value);
217:            }
218:
219:            /** Getter for property value.
220:             * @return Value of property value.
221:             */
222:            public String getValue() {
223:                return m_value;
224:            }
225:
226:            /** Setter for property value.
227:             * @param value New value of property value.
228:             */
229:            public void setValue(String value) {
230:                if (m_stringCase != null && value != null) {
231:                    if (m_stringCase.equals(FieldMetaData.UPPER_CASE))
232:                        value = value.toUpperCase();
233:                    else if (m_stringCase.equals(FieldMetaData.LOWER_CASE))
234:                        value = value.toLowerCase();
235:                } else if (value == null)
236:                    value = "";
237:                // Only update it and flag it if changed
238:                if ((value == null && m_value != null)
239:                        || (value != null && !value.equals(m_value))) {
240:                    m_value = value;
241:                    setModelChanged(true);
242:
243:                }
244:            }
245:
246:            /** Change the state of the model internally */
247:            private void setModelChanged(boolean setState) {
248:                m_modelChanged = setState;
249:            }
250:
251:            /** See if model has changed, in the process reset the changed flag.
252:             * @return true if the model was changed.
253:             */
254:            public boolean isModelChanged() {
255:                boolean modified = m_modelChanged;
256:                m_modelChanged = false;
257:                return modified;
258:            }
259:
260:            /** Setter for property stringCase.
261:             * @param stringCase New value of property stringCase.
262:             */
263:            public void setStringCase(String stringCase) {
264:                m_stringCase = stringCase;
265:            }
266:
267:            /** Getter for property stringCase.
268:             * @return Value of property stringCase.
269:             */
270:            public String getStringCase() {
271:                return m_stringCase;
272:            }
273:
274:            /** Setter for property maxLen.
275:             * @param maxLen New value of property maxLen.
276:             */
277:            public void setMaxLen(int maxLen) {
278:                m_maxLen = maxLen;
279:            }
280:
281:            /** Getter for property maxLen.
282:             * @return Value of property maxLen.
283:             */
284:            public int getMaxLen() {
285:                return m_maxLen;
286:            }
287:
288:            /** Setter for property minLen.
289:             * @param minLen New value of property minLen.
290:             */
291:            public void setMinLen(int minLen) {
292:                m_minLen = minLen;
293:            }
294:
295:            /** Getter for property minLen.
296:             * @return Value of property minLen.
297:             */
298:            public int getMinLen() {
299:                return m_minLen;
300:            }
301:
302:            /** Getter for property dataType.
303:             * @return Value of property dataType.
304:             */
305:            public String getDataType() {
306:                return m_dataType;
307:            }
308:
309:            /** Getter for property metaData.
310:             * @return Value of property metaData.
311:             */
312:            public FieldMetaData getMetaData() {
313:                return m_meta;
314:            }
315:
316:            /** Getter for property mandatory.
317:             * @return Value of property mandatory.
318:             */
319:            public boolean isMandatory() {
320:                if (m_mandatory != null)
321:                    return m_mandatory.booleanValue();
322:                else if (m_meta != null && m_meta.isMandatory() != null)
323:                    return m_meta.isMandatory().booleanValue();
324:                else
325:                    return false;
326:            }
327:
328:            /** Setter for property mandatory.
329:             * @param meta New value of property mandatory.
330:             */
331:            public void setMandatory(boolean mandatory) {
332:                m_mandatory = new Boolean(mandatory);
333:            }
334:
335:        }
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