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1
4 package org.wings.jsp;
5
6 import org.wings.session.Session;
7 import org.wings.session.SessionManager;
8 import org.wings.externalizer.ExternalizedResource;
9 import org.wings.event.SRequestEvent;
10 import org.wings.event.SRequestListener;
11 import org.wings.*;
12 import org.wings.plaf.css.Utils;
13 import org.wings.io.StringBufferDevice;
14
15 import javax.servlet.http.HttpServletResponse  ;
16 import javax.servlet.http.HttpServletRequest ;
17 import javax.servlet.ServletConfig ;
18 import javax.servlet.ServletException ;
19 import javax.servlet.jsp.JspWriter ;
20 import java.util.Map ;
21 import java.util.HashMap ;
22 import java.util.Enumeration ;
23 import java.util.Iterator ;
24 import java.io.IOException ;
25
26
30 public class WingsSession
31 extends Session
32 {
33 public static WingsSession getSession(ServletConfig servletConfig, HttpServletRequest request, HttpServletResponse response) throws ServletException {
34 synchronized (request.getSession()) {
35 String key = "Session:" + request.getSession().getServletContext().getServletContextName();
36 WingsSession wingsSession = (WingsSession)request.getSession().getAttribute(key);
37 if (wingsSession == null) {
38 wingsSession = new WingsSession();
39 request.getSession().setAttribute(key, wingsSession);
40 SessionManager.setSession(wingsSession);
41
42 wingsSession.init(servletConfig, request);
43 RequestURL requestURL = new RequestURL("", response.encodeURL("foo").substring(3));
44 wingsSession.setProperty("request.url", requestURL);
45 }
46
47 SessionManager.setSession(wingsSession);
48 wingsSession.setServletRequest(request);
49 wingsSession.setServletResponse(response);
50
51 return wingsSession;
52 }
53 }
54
55 protected static WingsSession getSession(HttpServletRequest request, HttpServletResponse response) throws ServletException {
56 return getSession(null, request, response);
60 }
61
62 public static void removeSession() {
63 SessionManager.removeSession();
64 }
65
66 public static SFrame getFrame(HttpServletRequest request, HttpServletResponse response) throws ServletException {
67 String path = request.getServletPath();
68 int pos = path.lastIndexOf('/');
69 path = path.substring(pos + 1);
70
71 synchronized (request.getSession()) {
72 WingsSession wingsSession = getSession(request, response);
73 Map frames = getFrames(wingsSession);
74 SFrame frame = (SFrame)frames.get(path);
75 if (frame == null) {
76 frame = new SFrame(path);
77 frame.setTargetResource(path);
78 frame.show();
79 frames.put(path, frame);
80 }
81 SessionManager.removeSession();
82 return frame;
83 }
84 }
85
86 private static Map getFrames(WingsSession wingsSession) {
87 Map frames = (Map ) wingsSession.getProperty("frames");
88 if (frames == null) {
89 frames = new HashMap ();
90 wingsSession.setProperty("frames", frames);
91 }
92 return frames;
93 }
94
95 public static void dispatchEvents(HttpServletRequest request, HttpServletResponse response) throws ServletException {
96 synchronized (request.getSession()) {
97 WingsSession wingsSession = getSession(request, response);
98 SForm.clearArmedComponents();
99
100 Enumeration en = request.getParameterNames();
101 if (en.hasMoreElements()) {
102 wingsSession.fireRequestEvent(SRequestEvent.DISPATCH_START);
103
104 while (en.hasMoreElements()) {
105 String paramName = (String ) en.nextElement();
106 String [] value = request.getParameterValues(paramName);
107 wingsSession.getDispatcher().dispatch(paramName, value);
108 }
109 SForm.fireEvents();
110
111 wingsSession.fireRequestEvent(SRequestEvent.DISPATCH_DONE);
112 }
113
114 wingsSession.getReloadManager().invalidateResources();
115 wingsSession.getReloadManager().clear();
116 SessionManager.removeSession();
117 }
118 }
119
120 public void addComponent(String name, SComponent component) throws ServletException {
121 SFrame frame = getFrame(getServletRequest(), getServletResponse());
122 frame.getContentPane().add(component, name);
123 setProperty(name, component);
124 }
125
126 public SComponent getComponent(String name) {
127 return (SComponent)getProperty(name);
128 }
129
130 public SComponent removeComponent(String name) throws ServletException {
131 SFrame frame = getFrame(getServletRequest(), getServletResponse());
132 SComponent component = (SComponent) getProperty(name);
133 frame.getContentPane().remove(component);
134 return component;
135 }
136
137 public static void writeHeaders(HttpServletRequest request, HttpServletResponse response, JspWriter out) throws IOException , ServletException {
138 synchronized (request.getSession()) {
139 SFrame frame = getFrame(request, response);
140 WingsSession wingsSession = getSession(request, response);
141
142 StringBufferDevice headerdev = new StringBufferDevice();
143 for (Iterator iterator = frame.headers().iterator(); iterator.hasNext();) {
144 Object next = iterator.next();
145 if (next instanceof Renderable) {
146 ((Renderable) next).write(headerdev);
147 } else {
148 Utils.write(headerdev, next.toString());
149 }
150 headerdev.write("\n".getBytes());
151 }
152 out.print(headerdev);
153
154 SessionManager.removeSession();
155 }
156 }
157
158 public static void writeComponent(HttpServletRequest request, HttpServletResponse response, JspWriter out, SComponent component) throws IOException , ServletException {
159 synchronized (request.getSession()) {
160 WingsSession wingsSession = getSession(request, response);
161 StringBufferDevice outdev = new StringBufferDevice();
162 component.write(outdev);
163 out.print(outdev);
164 SessionManager.removeSession();
165 }
166 }
167
168 public void setServletRequest(HttpServletRequest servletRequest) {
169 this.servletRequest = servletRequest;
170 }
171
172 public void setServletResponse(HttpServletResponse servletResponse) {
173 this.servletResponse = servletResponse;
174 }
175
176 public void fireRequestEvent(int type) {
177 fireRequestEvent(type, null);
178 }
179
180 public void fireRequestEvent(int type, ExternalizedResource resource) {
181 SRequestEvent event = null;
182
183 Object [] listeners = listenerList.getListenerList();
184 for (int i = listeners.length - 2; i >= 0; i -= 2) {
185 if (listeners[i] == SRequestListener.class) {
186 if (event == null) {
188 event = new SRequestEvent(this, type, resource);
189 }
190 ((SRequestListener) listeners[i + 1]).processRequest(event);
191 }
192 }
193 }
194 }
195 |
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