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1
32
33 package scioworks.imap.presentation.base;
34
35 import java.util.Vector  ;
36
37 import com.lutris.appserver.server.httpPresentation.*;
38 import com.lutris.util.KeywordValueException;
39
40 import org.w3c.dom.*;
41 import org.w3c.dom.html.*;
42
43
44
45 import scioworks.imap.presentation.ImapWebSessionData;
46 import scioworks.imap.presentation.*;
47 import scioworks.imap.presentation.KMSPresentationException;
48
49 public abstract class BasePO
50 implements HttpPresentation, BaseParameters, BaseEvents, BaseMessages, BaseURLs {
51
52 protected static final int m_firstEntryIndex = 1;
53 protected static final int m_pageLength = 10;
54
55 protected HttpPresentationComms m_comms = null;
56 protected ImapWebSessionData m_ImapWebSessionData = null;
57
58 abstract public String handleDefault()
59 throws HttpPresentationException, ServerPageRedirectException;
60
61
64 protected boolean isLoginRequired() {
65 return true;
66 }
67
68
72 public HttpPresentationComms getComms() {
73 return m_comms;
74 }
75
76 public ImapWebSessionData getImapWebSessionData() {
77 return m_ImapWebSessionData;
78 }
79
80 public void setSessionData(ImapWebSessionData sessionData) {
81 this.m_ImapWebSessionData = sessionData;
82 }
83
84 protected void initSessionData(HttpPresentationComms comms)
85 throws KMSPresentationException {
86
87 this.m_comms = comms;
88 try {
89
90 Object obj = getComms().sessionData.get(ImapWebSessionData.SESSION_KEY);
92
93 if(null != obj) {
95 m_ImapWebSessionData = (ImapWebSessionData) obj;
96
97 } else {
98
99 this.m_ImapWebSessionData = new ImapWebSessionData(null);
101 getComms().sessionData.set(ImapWebSessionData.SESSION_KEY, this.m_ImapWebSessionData);
102 }
103 } catch (KeywordValueException ex) {
104 System.out.println("Problem getting session data from session: " +
105 ex.getMessage());
106 }
107 }
108
109
112 protected void checkForUserLogin()
113 throws KMSPresentationException {
114
115 try {
116 if (!m_ImapWebSessionData.isValidSession()) {
117
118 String requestedPO = getComms().request.getRequestURI();
119 getComms().response.writeHTML(
120 this.showErrorPage("Session Expired",
121 "You session has expired. Please re-login",
122 "Re-login", URL_login, "_parent"));
123 } else {
124 }
126 } catch (Exception ex) {
127 throw new KMSPresentationException("Trouble checking for user login status", ex);
128 }
129 }
130
131 public void run(HttpPresentationComms comms)
132 throws KMSPresentationException {
133
134 initSessionData(comms);
136
137 if(isLoginRequired()) {
139 checkForUserLogin();
140 }
141
142 try {
143 handleEvent(comms);
145 } catch (HttpPresentationException e) {
146 Logger.writeError("BasePO::run", e);
147 throw new KMSPresentationException("An error has occured. "+
148 "Please contact your administrator. Error message: "+e.getMessage());
149 }
150
151 }
152
153 public void handleEvent(HttpPresentationComms comms)
154 throws HttpPresentationException {
155
156 String returnHTML = null;
157
158 try {
159 if (this.getStringParameter(PARAM_imageData).equals("y")) {
160 String returnMimeType = handleDefault();
161 comms.response.setContentType(returnMimeType);
162 return;
163
164 } else {
165 returnHTML = handleDefault();
166 }
167 } catch (Exception e) {
168 returnHTML = this.showErrorPage("Internal Error",
169 "An error has occured. Please contact your administrator. "+
170 "Error message: "+e.getMessage(),
171 "", "");
172 Logger.writeError("BasePO::handleEvent", e);
173 }
174
175 getComms().response.writeHTML(returnHTML);
176 }
177
178 protected long getLongParameter(String parm)
179 throws HttpPresentationException, NumberFormatException {
180 long res = 0;
181 try {
182 res = Long.parseLong(m_comms.request.getParameter(parm));
183 } catch (NumberFormatException e) {
184 res = -1;
185 }
186 return res;
187 }
188
189 protected int getIntParameter(String parm)
190 throws HttpPresentationException, NumberFormatException {
191 int res = 0;
192 try {
193 res = Integer.parseInt(m_comms.request.getParameter(parm));
194 } catch (NumberFormatException e) {
195 res = -1;
196 }
197 return res;
198 }
199
200 protected String getStringParameter(String parm)
201 throws HttpPresentationException {
202 String value = m_comms.request.getParameter(parm);
203 if ((value == null) || (value.length() == 0)) {
204 value = "";
205 }
206 return value;
207 }
208
209 protected String [] getStringParameterArray(String parm)
210 throws HttpPresentationException {
211 return m_comms.request.getParameterValues(parm);
212 }
213
214 protected void setStringParameter(String name, String value)
215 throws HttpPresentationException {
216
217 m_comms.response.setHeader(name, value);
218 }
219
220 protected long[] getLongParameterArray(String parm)
221 throws HttpPresentationException {
222 String [] strArr = m_comms.request.getParameterValues(parm);
223 long[] longArr = new long[strArr.length];
224 for (int i=0; i<strArr.length; i++) {
225 longArr[i] = Long.parseLong(strArr[i]);
226 }
227 return longArr;
228 }
229
230 protected String showErrorPage(String errorHeader, String errorText,
231 String errorLinkText, String errorLink, String target) {
232 errorPageHTML page = (errorPageHTML)m_comms.xmlcFactory.create(errorPageHTML.class);
233 page.setTextErrorHeader(errorHeader);
234 page.setTextErrorText(errorText);
235 page.setTextErrorLinkText(errorLinkText);
236
237 HTMLAnchorElement fileLink;
238 fileLink = page.getElementErrorLink();
239 if(errorLinkText.equals("") || errorLink.equals("")) {
240 this.removeElement(page, fileLink);
241 } else {
242 fileLink.setHref(errorLink);
243 if(!target.equals("")) {
244 fileLink.setTarget(target);
245 }
246 }
247 return page.toDocument();
248 }
249
250 protected String showErrorPage(String errorHeader, String errorText,
251 String errorLinkText, String errorLink) {
252 return showErrorPage(errorHeader, errorText, errorLinkText, errorLink, "");
253 }
254
255 protected String showCompletionPage(String header, String text,
256 String linkText, String link) {
257 messagePageHTML page = (messagePageHTML)m_comms.xmlcFactory.create(messagePageHTML.class);
258 page.setTextMessageHeader(header);
259 page.setTextMessageText(text);
260 page.setTextMessageLinkText(linkText);
261
262 HTMLAnchorElement fileLink = page.getElementMessageLink();
263 if(linkText.equals("") || link.equals("")) {
264 this.removeElement(page, fileLink);
265 } else {
266 fileLink.setHref(link);
267
272 }
273 return page.toDocument();
274 }
275
276 protected void removeElement(org.enhydra.xml.xmlc.html.HTMLObjectImpl page,
277 Element currElement) {
278 if (currElement != null) {
279 Node parentNode = currElement.getParentNode();
280 parentNode.removeChild(currElement);
281 } else {
282 Logger.writeDebug("Error: unfound element "+currElement.getLocalName());
283 }
284 }
285
286 protected void removeElement(org.enhydra.xml.xmlc.html.HTMLObjectImpl page,
287 java.util.HashSet elementSet) {
288 Element currElement;
289 java.util.Iterator it = elementSet.iterator();
290 Node parentNode;
291 while (it.hasNext()) {
292 currElement = (Element) it.next();
293 if (currElement != null) {
294 parentNode = currElement.getParentNode();
295 parentNode.removeChild(currElement);
296 } else {
297 Logger.writeDebug("Error: unfound element "+currElement.getLocalName());
298 }
299 }
300 }
301
302 protected void processSelectList(org.enhydra.xml.xmlc.html.HTMLObjectImpl page,
303 HTMLSelectElement lookUpElement, Vector displayList, Vector valueList,
304 String selectedItem) {
305
306 for (int i=lookUpElement.getLength()-1; i>=0; i--) {
308 lookUpElement.remove(i);
309 }
310
311 for(int i=0; i<valueList.size(); i++) {
312 HTMLOptionElement o1 = (HTMLOptionElement) page.createElement("OPTION");
314 o1.setValue((String )valueList.elementAt(i));
315 o1.appendChild(page.createTextNode((String )displayList.elementAt(i)));
316 if (selectedItem.equals((String )valueList.elementAt(i))) {
317 o1.setAttribute("selected","selected");
318 }
319 lookUpElement.appendChild(o1);
320 }
321 }
322 }
323 |
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