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17 package org.apache.geronimo.console;
18
19 import org.apache.commons.logging.Log;
20 import org.apache.commons.logging.LogFactory;
21 import org.apache.commons.fileupload.portlet.PortletFileUpload;
22 import org.apache.commons.fileupload.disk.DiskFileItemFactory;
23 import org.apache.commons.fileupload.FileItem;
24 import org.apache.commons.fileupload.FileUploadException;
25
26 import javax.portlet.ActionRequest;
27 import javax.portlet.ActionResponse;
28 import javax.portlet.PortletException;
29 import javax.portlet.RenderRequest;
30 import javax.portlet.RenderResponse;
31 import javax.portlet.WindowState;
32 import javax.portlet.PortletConfig;
33 import javax.portlet.PortletRequest;
34 import java.util.Map  ;
35 import java.util.HashMap ;
36 import java.util.Iterator ;
37 import java.util.List ;
38 import java.io.IOException ;
39
40
47 public abstract class MultiPagePortlet extends BasePortlet {
48 private final static Log log = LogFactory.getLog(MultiPagePortlet.class);
49 protected static final String MODE_KEY = "mode";
50 protected Map helpers = new HashMap ();
51
52 public void destroy() {
53 for (Iterator it = helpers.values().iterator(); it.hasNext();) {
54 MultiPageAbstractHandler handler = (MultiPageAbstractHandler) it.next();
55 handler.destroy();
56 }
57 helpers.clear();
58 super.destroy();
59 }
60
61 public void processAction(ActionRequest actionRequest,
62 ActionResponse actionResponse) throws PortletException, IOException {
63 String mode = null;
64 Map files = null;
65 Map fields = null;
66 if(actionRequest.getContentType() != null && actionRequest.getContentType().startsWith("multipart/form-data")) {
67 files = new HashMap ();
68 fields = new HashMap ();
69 PortletFileUpload request = new PortletFileUpload(new DiskFileItemFactory());
70 try {
71 List items = request.parseRequest(actionRequest);
72 for (int i = 0; i < items.size(); i++) {
73 FileItem item = (FileItem) items.get(i);
74 if(item.isFormField()) {
75 if(item.getFieldName().equals(MODE_KEY)) {
76 mode = item.getString();
77 }
78 fields.put(item.getFieldName(), item.getString());
79 } else {
80 files.put(item.getFieldName(), item);
81 }
82 }
83 } catch (FileUploadException e) {
84 log.error("Unable to process form including a file upload", e);
85 }
86 } else {
87 mode = actionRequest.getParameter(MODE_KEY);
88 }
89 MultiPageModel model = getModel(actionRequest);
90 while(true) {
91 if(mode == null) {
92 break;
93 }
94 int pos = mode.lastIndexOf('-');
95 if(pos == -1) { break;
97 } else {
98 String type = mode.substring(pos+1);
99 mode = mode.substring(0, pos);
100 MultiPageAbstractHandler handler = (MultiPageAbstractHandler) helpers.get(mode);
101 if(handler == null) {
102 log.error("No handler for action mode '"+mode+"'");
103 break;
104 }
105 if(files == null) {
106 handler.getUploadFields().clear();
107 handler.getUploadFiles().clear();
108 } else {
109 handler.getUploadFields().putAll(fields);
110 handler.getUploadFiles().putAll(files);
111 }
112 log.debug("Using action handler '"+handler.getClass().getName()+"'");
113 if(type.equals("before")) {
114 mode = handler.actionBeforeView(actionRequest, actionResponse, model);
115 } else if(type.equals("after")) {
116 mode = handler.actionAfterView(actionRequest, actionResponse, model);
117 } else {
118 log.error("Unrecognized portlet action '"+mode+"'");
119 mode = null;
120 }
121 }
122 }
123 if(mode != null) {
124 actionResponse.setRenderParameter(MODE_KEY, mode);
125 }
126 if(model != null) {
127 model.save(actionResponse, actionRequest.getPortletSession(true));
128 }
129 }
130
131 protected void doView(RenderRequest renderRequest, RenderResponse renderResponse) throws IOException , PortletException {
132 if (WindowState.MINIMIZED.equals(renderRequest.getWindowState())) {
133 return;
134 }
135 String mode = renderRequest.getParameter(MODE_KEY);
136 MultiPageModel model = getModel(renderRequest);
137 if(mode == null || mode.equals("")) {
138 mode = getDefaultMode();
139 }
140 MultiPageAbstractHandler handler = (MultiPageAbstractHandler) helpers.get(mode);
141 try {
142 if(handler == null) {
143 log.error("No handler for render mode '"+mode+"'");
144 } else {
145 log.debug("Using render handler '"+handler.getClass().getName()+"'");
146 handler.renderView(renderRequest, renderResponse, model);
147 }
148 } catch (Throwable e) {
149 log.error("Unable to render portlet", e);
150 }
151 renderRequest.setAttribute(getModelJSPVariableName(), model);
152 if(handler != null) {
153 handler.getView().include(renderRequest, renderResponse);
154 }
155 }
156
157 protected void addHelper(MultiPageAbstractHandler handler, PortletConfig config) throws PortletException {
158 handler.init(config);
159 helpers.put(handler.getMode(), handler);
160 }
161
162 protected String getDefaultMode() {
163 if(helpers.containsKey("index")) return "index";
164 if(helpers.containsKey("list")) return "list";
165 return null;
166 }
167
168 protected abstract String getModelJSPVariableName();
169
170 protected abstract MultiPageModel getModel(PortletRequest request);
171 }
172 |
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