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

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Java Source Code / Java Documentation » J2EE » Sofia » com.salmonllc.html 
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.html;
021:
022:        /////////////////////////
023:        //$Archive: /SOFIA/SourceCode/com/salmonllc/html/HtmlFileUpload.java $
024:        //$Author: Dan $
025:        //$Revision: 23 $
026:        //$Modtime: 9/15/04 1:06p $
027:        /////////////////////////
028:
029:        import java.io.File;
030:        import java.util.Hashtable;
031:        import java.util.Vector;
032:
033:        import com.salmonllc.html.events.FileUploadEvent;
034:        import com.salmonllc.html.events.FileUploadListener;
035:        import com.salmonllc.properties.Props;
036:        import com.salmonllc.sql.DataStoreBuffer;
037:
038:        /**
039:         * This class will generate a file upload component.
040:         */
041:        public class HtmlFileUpload extends HtmlComponent {
042:            byte[] _content;
043:            String _fileName;
044:            String _shortFileName;
045:            String _mimeType;
046:            private String _fontTagStart = null;
047:            private String _fontTagEnd = null;
048:            Vector _listeners;
049:            boolean _fileUploaded;
050:            int _size = -1;
051:            private Vector _events;
052:            private String _theme;
053:            private DataStoreBuffer _ds;
054:            private int _contentCol = -1;
055:            private int _fileNameCol = -1;
056:            private int _shortFileNameCol = -1;
057:            private int _mimeTypeCol = -1;
058:            private boolean _enabled = true;
059:            private Integer _tabIndex;
060:
061:            /**
062:             * Constructs a new File Upload.
063:             * @param name Each component on a page must have a unique name.
064:             * @param p A Page object that will be used to initialize any properties in the object.
065:             */
066:            public HtmlFileUpload(String name, HtmlPage p) {
067:                this (name, null, p);
068:
069:            }
070:
071:            /**
072:             * Constructs a new File Upload.
073:             * @param name Each component on a page must have a unique name.
074:             * @param theme The theme to use for loading properties.
075:             * @param p A Page object that will be used to initialize any properties in the object.
076:             */
077:            public HtmlFileUpload(String name, String theme, HtmlPage p) {
078:                super (name, p);
079:                setTheme(theme);
080:
081:            }
082:
083:            /**
084:             * This method was created in VisualAge.
085:             * @param e com.salmonllc.html.events.ValueChangedEvent
086:             */
087:            protected void addEvent(FileUploadEvent e) {
088:                if (_events == null)
089:                    _events = new Vector();
090:
091:                _events.addElement(e);
092:            }
093:
094:            /**
095:             * This method adds a listener the will be notified when a file is uploaded.
096:             * @param l The listener to add.
097:             */
098:            public void addFileUploadListener(FileUploadListener l) {
099:                if (_listeners == null)
100:                    _listeners = new Vector();
101:
102:                for (int i = 0; i < _listeners.size(); i++) {
103:                    if (((FileUploadListener) _listeners.elementAt(i)) == l)
104:                        return;
105:                }
106:
107:                _listeners.addElement(l);
108:            }
109:
110:            /**
111:             * This method should be implemented by subclasses of this component that will events. This method should notify each of the component's listeners that an event occured.
112:             * @param eventType valid Types are EVENT_SUBMIT and EVENT_OTHER
113:             */
114:            public boolean executeEvent(int eventType) throws Exception {
115:                if (eventType != EVENT_OTHER)
116:                    return true;
117:
118:                if (_events == null)
119:                    return true;
120:
121:                for (int j = 0; j < _events.size(); j++) {
122:                    FileUploadEvent e = (FileUploadEvent) _events.elementAt(j);
123:
124:                    if (_listeners != null) {
125:                        for (int i = 0; i < _listeners.size(); i++)
126:                            ((FileUploadListener) _listeners.elementAt(i))
127:                                    .fileUploaded(e);
128:                    }
129:
130:                    _fileName = e.getFileName();
131:                    _content = e.getContent();
132:                    _mimeType = e.getMimeType();
133:                    _shortFileName = e.getShortFileName();
134:
135:                    int iRowNo = e.getRow();
136:                    if (_ds != null) {
137:                        if (_fileNameCol != -1) {
138:                            if (iRowNo > -1)
139:                                _ds.setString(iRowNo, _fileNameCol, e
140:                                        .getFileName());
141:                            else
142:                                _ds.setString(_fileNameCol, e.getFileName());
143:                        }
144:                        if (_shortFileNameCol != -1) {
145:                            if (iRowNo > -1)
146:                                _ds.setString(iRowNo, _shortFileNameCol, e
147:                                        .getShortFileName());
148:                            else
149:                                _ds.setString(_shortFileNameCol, e
150:                                        .getShortFileName());
151:                        }
152:                        if (_mimeTypeCol != -1) {
153:                            if (iRowNo > -1)
154:                                _ds.setString(e.getRow(), _mimeTypeCol, e
155:                                        .getMimeType());
156:                            else
157:                                _ds.setString(_mimeTypeCol, e.getMimeType());
158:                        }
159:                        if (_contentCol != -1) {
160:                            if (iRowNo > -1)
161:                                _ds.setByteArray(e.getRow(), _contentCol, e
162:                                        .getContent());
163:                            else
164:                                _ds.setByteArray(_contentCol, e.getContent());
165:                        }
166:                    }
167:                }
168:
169:                reset();
170:                return true;
171:            }
172:
173:            public void generateHTML(java.io.PrintWriter p, int rowNo) {
174:                if (!getVisible())
175:                    return;
176:
177:                String tag = "<INPUT TYPE=\"FILE\" name=\"" + getFullName()
178:                        + (rowNo > -1 ? "_" + rowNo + "\"" : "\"");
179:
180:                if ((!_enabled) && useDisabledAttribute())
181:                    tag += " disabled=\"true\"";
182:
183:                if (_size > -1) {
184:                    int size = _size;
185:                    if (getPage().getBrowserType() == HtmlPage.BROWSER_NETSCAPE)
186:                        size = (int) (size * .60);
187:                    tag += " SIZE=\"" + size + "\"";
188:                }
189:
190:                if (_fileName != null)
191:                    tag += " VALUE=\"" + _fileName + "\"";
192:
193:                if (_class != null)
194:                    tag += " class=\"" + _class + "\"";
195:
196:                if (_tabIndex != null)
197:                    tag += " tabindex=\"" + _tabIndex + "\"";
198:
199:                tag += ">";
200:
201:                if (_fontTagStart != null)
202:                    tag = _fontTagStart + tag + _fontTagEnd;
203:
204:                p.println(tag);
205:            }
206:
207:            /**
208:             * This method returns the contents of the file uploaded.
209:             */
210:            public byte[] getContent() {
211:                return _content;
212:            }
213:
214:            /**
215:             * This method returns the name of the file uploaded.
216:             */
217:            public String getFileName() {
218:                return _fileName;
219:            }
220:
221:            /**
222:             * This method returns the short name of the file uploaded.
223:             */
224:            public String getShortFileName() {
225:                return _shortFileName;
226:            }
227:
228:            /**
229:             * This method gets the end font tag for the component.
230:             */
231:            public String getFontEndTag() {
232:                return _fontTagEnd;
233:            }
234:
235:            /**
236:             * This method gets the start font tag for the component.
237:             */
238:            public String getFontStartTag() {
239:                return _fontTagStart;
240:            }
241:
242:            /**
243:             * This method returns the name of the mimeType uploaded.
244:             */
245:            public String getMimeType() {
246:                return _mimeType;
247:            }
248:
249:            /**
250:             * This method gets the size of the component.
251:             */
252:            public int getSize() {
253:                return _size;
254:            }
255:
256:            /**
257:             * This method returns the property theme for the component.
258:             */
259:            public String getTheme() {
260:                return _theme;
261:            }
262:
263:            public boolean processParms(Hashtable parms, int row) {
264:                if (!getVisible())
265:                    return false;
266:
267:                String name = getFullName();
268:                if (row > -1)
269:                    name += "_" + row;
270:
271:                String filename = "";
272:                String shortFileName = "";
273:                if (parms.get(name) == null)
274:                    return false;
275:                else if (parms.get(name) instanceof  java.lang.String)
276:                    filename = (String) parms.get(name);
277:                else
278:                    filename = ((String[]) parms.get(name))[0];
279:
280:                _fileName = null;
281:                _mimeType = null;
282:                _content = null;
283:                _shortFileName = null;
284:
285:                if (filename != null) {
286:                    String mimeType = (String) parms.get(name + "_contentType");
287:                    byte[] content = (byte[]) parms.get(name + "_content");
288:                    shortFileName = setShortFileName(filename);
289:                    addEvent(new FileUploadEvent(getPage(), this , getName(),
290:                            getFullName(), filename, shortFileName, content,
291:                            mimeType, row));
292:                }
293:                return false;
294:
295:            }
296:
297:            /**
298:             * This method extracts the file name from a directory.
299:             * @param sFileName String
300:             */
301:            private String setShortFileName(String sFileName) {
302:                if (sFileName == null) {
303:                    _shortFileName = null;
304:                    return _shortFileName;
305:                }
306:                int iIdx = sFileName.lastIndexOf(File.separator);
307:
308:                if (iIdx < 0) {
309:                    _shortFileName = sFileName;
310:                    return _shortFileName;
311:                }
312:
313:                _shortFileName = sFileName.substring(iIdx + 1, sFileName
314:                        .length());
315:                return _shortFileName;
316:            }
317:
318:            /**
319:             * This method was created in VisualAge.
320:             */
321:            protected void removeEvent(int index) {
322:                _events.removeElementAt(index);
323:            }
324:
325:            /**
326:             * This method removes a listener from the list that will be notified if the text in the component changes.
327:             * @param l The listener to remove.
328:             */
329:            public void removeFileUploadListener(FileUploadListener l) {
330:                if (_listeners == null)
331:                    return;
332:
333:                for (int i = 0; i < _listeners.size(); i++) {
334:                    if (((FileUploadListener) _listeners.elementAt(i)) == l) {
335:                        _listeners.removeElementAt(i);
336:                        return;
337:                    }
338:                }
339:            }
340:
341:            /**
342:             * This method will clear all pending events from the event queue for this component.
343:             */
344:            public void reset() {
345:                if (_events != null) {
346:                    _events.setSize(0);
347:                }
348:            }
349:
350:            /**
351:             * Use this method to bind the component to columns in a DataStore.
352:             * @param ds The datastore to bind to.
353:             * @param fileNameColumn The column in the datastore to put the filename
354:             * @param shortFileNameColumn The column in the datastore to put the short filename
355:             * @param mimeTypeColumn The column in the datastore to put the mimetype
356:             * @param contentColumn The column in the datastore to put the content
357:             */
358:            public void setColumns(DataStoreBuffer ds, String fileNameColumn,
359:                    String shortFileNameColumn, String mimeTypeColumn,
360:                    String contentColumn) {
361:                _ds = ds;
362:                if (fileNameColumn != null)
363:                    _fileNameCol = ds.getColumnIndex(fileNameColumn);
364:                else
365:                    _fileNameCol = -1;
366:
367:                if (shortFileNameColumn != null)
368:                    _shortFileNameCol = ds.getColumnIndex(shortFileNameColumn);
369:                else
370:                    _shortFileNameCol = -1;
371:
372:                if (mimeTypeColumn != null)
373:                    _mimeTypeCol = ds.getColumnIndex(mimeTypeColumn);
374:                else
375:                    _mimeTypeCol = -1;
376:
377:                if (contentColumn != null)
378:                    _contentCol = ds.getColumnIndex(contentColumn);
379:                else
380:                    _contentCol = -1;
381:            }
382:
383:            /**
384:             * Use this method to bind the component to columns in a DataStore.
385:             * @param ds The datastore to bind to.
386:             * @param fileNameColumn The column in the datastore to put the filename
387:             * @param mimeTypeColumn The column in the datastore to put the mimetype
388:             * @param contentColumn The column in the datastore to put the content
389:             */
390:            public void setColumns(DataStoreBuffer ds, String fileNameColumn,
391:                    String mimeTypeColumn, String contentColumn) {
392:                setColumns(ds, fileNameColumn, null, mimeTypeColumn,
393:                        contentColumn);
394:            }
395:
396:            /**
397:             * This method returns the name of the file to be uploaded.
398:             */
399:            public void setFileName(String fileName) {
400:                _fileName = fileName;
401:            }
402:
403:            /**
404:             * This method sets the end font tag for the component.
405:             */
406:            public void setFontEndTag(String value) {
407:                _fontTagEnd = value;
408:            }
409:
410:            /**
411:             * This method sets the start font tag for the component.
412:             */
413:            public void setFontStartTag(String value) {
414:                _fontTagStart = value;
415:            }
416:
417:            /**
418:             * This method sets the size of the component.
419:             */
420:            public void setSize(int size) {
421:                _size = size;
422:            }
423:
424:            /**
425:             * This method sets the property theme for the component.
426:             * @param theme The theme to use.
427:             */
428:            public void setTheme(String theme) {
429:
430:                Props props = getPage().getPageProperties();
431:
432:                _fontTagStart = props.getThemeProperty(theme,
433:                        Props.FONT_TEXT_EDIT + Props.TAG_START);
434:                _fontTagEnd = props.getThemeProperty(theme,
435:                        Props.FONT_TEXT_EDIT + Props.TAG_END);
436:
437:                _theme = theme;
438:            }
439:
440:            public boolean isEnabled() {
441:                return _enabled;
442:            }
443:
444:            public void setEnabled(boolean enabled) {
445:                _enabled = enabled;
446:            }
447:
448:            /**
449:             * @returns the tab index html attribute
450:             */
451:            public int getTabIndex() {
452:                if (_tabIndex == null)
453:                    return -1;
454:                return _tabIndex.intValue();
455:            }
456:
457:            /**
458:             * @param sets the tab index html attribute. You can also pass TAB_INDEX_DEFAULT to use the default tab index for the component or TAB_INDEX_NONE to keep this component from being tabbed to
459:             */
460:            public void setTabIndex(int val) {
461:                if (val == -1)
462:                    _tabIndex = null;
463:                else
464:                    _tabIndex = new Integer(val);
465:            }
466:
467:            /**
468:             * Clears the content to free memory for big uploads
469:             */
470:            public void clearContent() {
471:                _content = null;
472:            }
473:        }
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