org.argeo.slc.client.rap/src/org/argeo/slc/client/ui/specific/OpenJcrFile.java

   1 package org.argeo.slc.client.ui.specific;
   2
   3 import java.net.URL;
   4 import java.util.UUID;
   5
   6 import javax.jcr.Node;
   7 import javax.jcr.Session;
   8
   9 import org.argeo.slc.SlcException;
  10 import org.argeo.slc.client.rap.OpenJcrFileService;
  11 import org.argeo.slc.repo.RepoService;
  12 import org.eclipse.core.commands.AbstractHandler;
  13 import org.eclipse.core.commands.ExecutionEvent;
  14 import org.eclipse.core.commands.ExecutionException;
  15 import org.eclipse.rap.rwt.RWT;
  16 //import org.eclipse.rap.rwt.service.IServiceHandler;
  17 //import org.eclipse.rap.rwt.service.IServiceManager;
  18 import org.eclipse.ui.PlatformUI;
  19
  20 /**
  21  * Rap specific command handler to open a file retrieved from a distant JCR
  22  * Repository. It creates and register a service instantiated with the
  23  * corresponding JCR node, forwards the request, and un register the service on
  24  * dispose
  25  *
  26  * This command and the corresponding service are specific for RAP version [1.3,
  27  * 2)
  28  */
  29 public class OpenJcrFile extends AbstractHandler {
  30
  31         // Use (new OpenJcrFileCmdId()).getCmdId() instead.
  32         // public final String ID = SlcRapPlugin.PLUGIN_ID + ".openJcrFile";
  33
  34         public final static String PARAM_REPO_NODE_PATH = "param.repoNodePath";
  35         public final static String PARAM_REPO_URI = "param.repoUri";
  36         public final static String PARAM_WORKSPACE_NAME = "param.workspaceName";
  37         public final static String PARAM_FILE_PATH = "param.filePath";
  38
  39         private RepoService repoService;
  40         private String currentServiceId;
  41
  42         public Object execute(ExecutionEvent event) throws ExecutionException {
  43
  44                 String repoNodePath = event.getParameter(PARAM_REPO_NODE_PATH);
  45                 String repoUri = event.getParameter(PARAM_REPO_URI);
  46                 String wkspName = event.getParameter(PARAM_WORKSPACE_NAME);
  47                 String filePath = event.getParameter(PARAM_FILE_PATH);
  48
  49                 // TODO sanity check
  50                 if (filePath == null || "".equals(filePath.trim()))
  51                         return null;
  52                 Session businessSession = null;
  53                 try {
  54                         businessSession = repoService.getRemoteSession(repoNodePath,
  55                                         repoUri, wkspName);
  56                         Node result = businessSession.getNode(filePath);
  57
  58                         // Create a temporary service. No better solution has been found
  59                         // yet.
  60                         currentServiceId = UUID.randomUUID().toString();
  61                         OpenJcrFileService ojfs = new OpenJcrFileService(result);
  62                         // FIXME replace it
  63 //                      IServiceManager manager = RWT.getServiceManager();
  64 //                      manager.registerServiceHandler(currentServiceId, ojfs);
  65                         String urlStr = createFullDownloadUrl(currentServiceId);
  66                         URL url = new URL(urlStr);
  67                         PlatformUI.getWorkbench().getBrowserSupport()
  68                                         .createBrowser("DownloadDialog").openURL(url);
  69                 } catch (Exception e) {
  70                         throw new SlcException("Unable to open Jcr File for path "
  71                                         + filePath, e);
  72                 }
  73
  74                 return null;
  75         }
  76
  77         @Override
  78         public void dispose() {
  79 //              IServiceManager manager = RWT.getServiceManager();
  80 //              manager.unregisterServiceHandler(currentServiceId);
  81                 super.dispose();
  82         }
  83
  84         private String createFullDownloadUrl(String serviceId) {
  85                 StringBuilder url = new StringBuilder();
  86                 url.append(RWT.getRequest().getRequestURL());
  87
  88                 StringBuilder params = new StringBuilder();
  89                 params.append("?");
  90                 // FIXME commented out so that it builds
  91                 //params.append(IServiceHandler.REQUEST_PARAM).append("=");
  92                 params.append(serviceId);
  93                 String encodedURL = RWT.getResponse().encodeURL(params.toString());
  94                 url.append(encodedURL);
  95                 return url.toString();
  96         }
  97
  98         /* Dependency Injection */
  99         public void setRepoService(RepoService repoService) {
 100                 this.repoService = repoService;
 101         }
 102 }