Source Code Cross Referenced for WmlImage.java in  » J2EE » Sofia » com » salmonllc » wml » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » J2EE » Sofia » com.salmonllc.wml 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        //** Copyright Statement ***************************************************
002:        //The Salmon Open Framework for Internet Applications (SOFIA)
003:        // Copyright (C) 1999 - 2002, Salmon LLC
004:        //
005:        // This program is free software; you can redistribute it and/or
006:        // modify it under the terms of the GNU General Public License version 2
007:        // as published by the Free Software Foundation;
008:        // 
009:        // This program is distributed in the hope that it will be useful,
010:        // but WITHOUT ANY WARRANTY; without even the implied warranty of
011:        // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
012:        // GNU General Public License for more details.
013:        // 
014:        // You should have received a copy of the GNU General Public License
015:        // along with this program; if not, write to the Free Software
016:        // Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
017:        // 
018:        // For more information please visit http://www.salmonllc.com
019:        //** End Copyright Statement ***************************************************
020:        package com.salmonllc.wml;
021:
022:        /////////////////////////
023:        //$Archive: /SOFIA/SourceCode/com/salmonllc/wml/WmlImage.java $
024:        //$Author: Srufle $
025:        //$Revision: 6 $
026:        //$Modtime: 4/15/03 2:25p $
027:        /////////////////////////
028:
029:        import java.io.PrintWriter;
030:
031:        import com.salmonllc.html.HtmlComponent;
032:        import com.salmonllc.html.HtmlPage;
033:        import com.salmonllc.jsp.JspController;
034:        import com.salmonllc.sql.*;
035:        import com.salmonllc.util.Util;
036:
037:        /**
038:         * This type can be used to add an image to your page.
039:         */
040:        public class WmlImage extends HtmlComponent {
041:            public static final String ALIGN_BOTTOM = "BOTTOM";
042:            public static final String ALIGN_MIDDLE = "MIDDLE";
043:            public static final String ALIGN_TOP = "TOP";
044:            public static final String ALIGN_NONE = "";
045:            //
046:            public static final int SIZE_PIXELS = 0;
047:            public static final int SIZE_PERCENT = 1;
048:            //
049:            private String _source = "";
050:            private String _localsrc = "";
051:            private String _alt = "";
052:            private String _align = ALIGN_NONE;
053:            private String _class;
054:            //
055:            private int _width = -1;
056:            private int _height = -1;
057:            private int _hSpace = -1;
058:            private int _vSpace = -1;
059:            //
060:            private int _widthSizeOption = SIZE_PIXELS;
061:            private int _heightSizeOption = SIZE_PIXELS;
062:            //
063:
064:            private DataStoreEvaluator _dsEval = null;
065:            private DataStoreEvaluator _altEval = null;
066:
067:            /**
068:             * Constructs an new Image
069:             * @param source - image that is being used.
070:             * @param p The page the image will be placed in
071:             */
072:            public WmlImage(String source, HtmlPage p) {
073:                this ("", source, p);
074:            }
075:
076:            /**
077:             *Does the binding for the component. This method is called by the framework and should not be called directly
078:             */
079:
080:            public void doBinding() throws Exception {
081:                String dataSource = getDataSource();
082:                String dsName = null;
083:                String dsExp = null;
084:
085:                if (dataSource == null)
086:                    return;
087:
088:                int pos = dataSource.indexOf(":");
089:                if (pos == -1)
090:                    dsName = dataSource;
091:                else {
092:                    dsName = dataSource.substring(0, pos);
093:                    dsExp = dataSource.substring(pos + 1);
094:                }
095:
096:                DataStoreBuffer ds = ((JspController) getPage())
097:                        .getDataSource(dsName);
098:                if (ds == null)
099:                    return;
100:
101:                if (!ds.getAutoBind())
102:                    return;
103:
104:                int index = -1;
105:                if (dsExp != null)
106:                    index = ds.getColumnIndex(dsExp);
107:                if (index != -1) {
108:                    setExpression(ds, ds.getColumnName(index));
109:                    index = ds.getColumnIndex(getName() + "ALT");
110:                    if (index > -1)
111:                        setAltExpression(ds, ds.getColumnName(index));
112:                }
113:            }
114:
115:            /**
116:             * Constructs an image object for the page
117:             */
118:            public WmlImage(String name, String source, HtmlPage p) {
119:                super (name, p);
120:                _source = source;
121:            }
122:
123:            /**
124:             *Generates the Html for the component. This method is called by the framework and should not be called directly
125:             */
126:            public void generateHTML(PrintWriter p, int rowNo) throws Exception {
127:                if (!getVisible()) {
128:                    return;
129:                }
130:
131:                if (_dsEval != null) {
132:                    if (rowNo > -1)
133:                        _source = _dsEval.evaluateRowFormat(rowNo);
134:                    else
135:                        _source = _dsEval.evaluateRowFormat();
136:
137:                }
138:
139:                String row = "";
140:                if (rowNo != -1)
141:                    row = "_" + rowNo;
142:
143:                String source = _source;
144:
145:                //
146:                StringBuffer out = new StringBuffer("<img");
147:
148:                if (!Util.isNull(source) && !Util.isEmpty(source))
149:                    out.append(" src=\"" + source + "\"");
150:
151:                // NAME
152:                if (!Util.isNull(getName()) && !Util.isEmpty(getName())) {
153:                    out.append(" id=\"" + getName() + row + "\"");
154:                }
155:                // ALIGN
156:                if (!Util.isNull(_class) && !Util.isEmpty(_class)) {
157:                    out.append(" class=\"" + _class + "\"");
158:                }
159:
160:                // ALT
161:                String alt = _alt;
162:                if (_altEval != null) {
163:                    if (rowNo > -1)
164:                        alt = _altEval.evaluateRowFormat(rowNo);
165:                    else
166:                        alt = _altEval.evaluateRowFormat();
167:                }
168:                if (!Util.isNull(alt) && !Util.isEmpty(alt)) {
169:                    out.append(" alt=\"" + alt + "\"");
170:                }
171:
172:                // ALIGN
173:                if (!Util.isNull(_align) && !Util.isEmpty(_align)) {
174:                    out.append(" align=\"" + _align + "\"");
175:                }
176:
177:                // WIDTH
178:                if (_width > -1) {
179:                    out.append(" width=\"" + _width
180:                            + (_widthSizeOption == SIZE_PERCENT ? "%" : "")
181:                            + "\"");
182:                }
183:
184:                // HEIGHT
185:                if (_height > -1) {
186:                    out.append(" height=\"" + _height
187:                            + (_heightSizeOption == SIZE_PERCENT ? "%" : "")
188:                            + "\"");
189:                }
190:
191:                // HSPACE
192:                if (_hSpace > -1) {
193:                    out.append(" hspace=\"" + _hSpace + "\"");
194:                }
195:                // VSPACE
196:                if (_vSpace > -1) {
197:                    out.append(" vspace=\"" + _vSpace + "\"");
198:                }
199:
200:                //
201:                out.append("/>");
202:                p.print(out);
203:            }
204:
205:            /**
206:             * Returns the alignment property for the image.
207:             */
208:            public String getAlign() {
209:                return _align;
210:            }
211:
212:            /**
213:             * Returns the alt for the image
214:             */
215:            public String getAlt() {
216:                return _alt;
217:            }
218:
219:            /**
220:             * This method returns the localsrc of the image.
221:             */
222:            public String getLocalSrc() {
223:                return _localsrc;
224:            }
225:
226:            /**
227:             * This method returns the height of the image.
228:             */
229:            public int getHeight() {
230:                return _height;
231:            }
232:
233:            /**
234:             * This method returns SIZE_PIXELS or SIZE_PERCENT.
235:             */
236:            public int getHeightSizeOption() {
237:                return _heightSizeOption;
238:            }
239:
240:            /**
241:             * This method returns the horizontal space around the the image.
242:             */
243:            public int getHorizontalSpace() {
244:                return _hSpace;
245:            }
246:
247:            /**
248:             * This method gets the source url for the image.
249:             */
250:            public String getSource() {
251:                return _source;
252:            }
253:
254:            /**
255:             * This method returns the vertical space around the the image.
256:             */
257:            public int getVerticalSpace() {
258:                return _vSpace;
259:            }
260:
261:            /**
262:             * This method returns the width of the image.
263:             */
264:            public int getWidth() {
265:                return _width;
266:            }
267:
268:            /**
269:             * This method returns SIZE_PIXELS or SIZE_PERCENT.
270:             */
271:            public int getWidthSizeOption() {
272:                return _widthSizeOption;
273:            }
274:
275:            /**
276:             * Use this method to get the class for the image tag
277:             */
278:            public String getClassName() {
279:                return _class;
280:            }
281:
282:            /**
283:             * Sets the alignment property for the image.
284:             */
285:
286:            public void setAlign(String align) {
287:                _align = align;
288:            }
289:
290:            /**
291:             * This method sets the alt for the image
292:             */
293:            public void setAlt(String alt) {
294:                _alt = alt;
295:            }
296:
297:            /**
298:             * Use this method to bind the alt property to an expression in a DataStore
299:             * @param ds The DataStore to bind to.
300:             * @param expression The expression to bind to.
301:             * @see DataStoreEvaluator
302:             */
303:            public void setAltExpression(DataStoreBuffer ds, String expression)
304:                    throws Exception {
305:                _altEval = new DataStoreEvaluator(ds, expression);
306:            }
307:
308:            /**
309:             * This method sets the localsrc of the image.
310:             */
311:            public void setLocalSrc(String localsrc) {
312:                _localsrc = localsrc;
313:            }
314:
315:            /**
316:             * Use this method to bind this component to an expression in a DataStore
317:             * @param ds The DataStore to bind to.
318:             * @param expression The expression to bind to.
319:             * @see DataStoreEvaluator
320:             */
321:            public void setExpression(DataStoreBuffer ds,
322:                    DataStoreExpression expression) throws Exception {
323:
324:                _dsEval = new DataStoreEvaluator(ds, expression);
325:            }
326:
327:            /**
328:             * Use this method to bind this component to an expression in a DataStoreBuffer. The resulting expression wil be formatted according to the pattern specified.
329:             * @param ds The DataStore to bind to.
330:             * @param expression The expression to bind to.
331:             * @param format The patter to use to format the result
332:             * @see DataStore#setFormat
333:             * @see DataStoreEvaluator
334:             */
335:            public void setExpression(DataStoreBuffer ds,
336:                    DataStoreExpression expression, String format)
337:                    throws Exception {
338:                _dsEval = new DataStoreEvaluator(ds, expression, format);
339:            }
340:
341:            /**
342:             * Use this method to bind this component to an expression in a DataStore
343:             * @param ds The DataStore to bind to.
344:             * @param expression The expression to bind to.
345:             * @see DataStoreEvaluator
346:             */
347:            public void setExpression(DataStoreBuffer ds, String expression)
348:                    throws Exception {
349:                _dsEval = new DataStoreEvaluator(ds, expression);
350:            }
351:
352:            /**
353:             * Use this method to bind this component to an expression in a DataStoreBuffer. The resulting expression wil be formatted according to the pattern specified.
354:             * @param ds The DataStore to bind to.
355:             * @param expression The expression to bind to.
356:             * @param format The patter to use to format the result
357:             * @see DataStore#setFormat
358:             * @see DataStoreEvaluator
359:             */
360:            public void setExpression(DataStoreBuffer ds, String expression,
361:                    String format) throws Exception {
362:                _dsEval = new DataStoreEvaluator(ds, expression, format);
363:            }
364:
365:            /**
366:             * This method sets the height of the image.
367:             */
368:            public void setHeight(int height) {
369:                _height = height;
370:            }
371:
372:            /**
373:             * Valid values for this method are SIZE_PIXELS or SIZE_PERCENT.
374:             */
375:            public void setHeightSizeOption(int option) {
376:                _heightSizeOption = option;
377:            }
378:
379:            /**
380:             * This method sets the Horizontal space around the image in pixels.
381:             */
382:            public void setHorizontalSpace(int width) {
383:                _hSpace = width;
384:            }
385:
386:            /**
387:             * This method sets the source url for the image.
388:             */
389:            public void setSource(String source) {
390:                _source = source;
391:            }
392:
393:            /**
394:             * This method sets the Vertical space around the image in pixels.
395:             */
396:            public void setVerticalSpace(int width) {
397:                _vSpace = width;
398:            }
399:
400:            /**
401:             * This method sets the width of the image.
402:             */
403:            public void setWidth(int width) {
404:                _width = width;
405:            }
406:
407:            /**
408:             * Valid values for this method are SIZE_PIXELS or SIZE_PERCENT.
409:             */
410:            public void setWidthSizeOption(int option) {
411:                _widthSizeOption = option;
412:            }
413:
414:            /**
415:             * This method gets the DataStoreEvaluator being used for expressions.
416:             * @return DataStoreEvaluator
417:             * @see DataStoreEvaluator
418:             */
419:            public DataStoreEvaluator getExpression() {
420:                return _dsEval;
421:            }
422:
423:            /**
424:             * This method gets the DataStoreEvaluator being used for alt expressions.
425:             * @return DataStoreEvaluator
426:             * @see DataStoreEvaluator
427:             */
428:            public DataStoreEvaluator getAltExpression() {
429:                return _altEval;
430:            }
431:
432:            /**
433:             * This method sets the class for the link.
434:             */
435:            public void setClassName(String className) {
436:                _class = className;
437:            }
438:
439:        }
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