OpenFile.java

   1 /*
   2  * Copyright (C) 2007-2012 Argeo GmbH
   3  *
   4  * Licensed under the Apache License, Version 2.0 (the "License");
   5  * you may not use this file except in compliance with the License.
   6  * You may obtain a copy of the License at
   7  *
   8  *         http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  * Unless required by applicable law or agreed to in writing, software
  11  * distributed under the License is distributed on an "AS IS" BASIS,
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  * See the License for the specific language governing permissions and
  14  * limitations under the License.
  15  */
  16 package org.argeo.eclipse.ui.specific;
  17
  18 import org.apache.commons.logging.Log;
  19 import org.apache.commons.logging.LogFactory;
  20 import org.eclipse.rap.rwt.RWT;
  21 import org.eclipse.rap.rwt.client.service.UrlLauncher;
  22
  23 /**
  24  * RWT specific object to open a file retrieved from the server. It forwards the
  25  * request to the correct service after encoding file name and path in the
  26  * request URI.
  27  *
  28  * <p>
  29  * The parameter "URI" is used to determine the correct file service, the path
  30  * and the file name. An optional file name can be added to present the end user
  31  * with a different file name as the one used to retrieve it.
  32  * </p>
  33  *
  34  *
  35  * <p>
  36  * The instance specific service is called by its ID and must have been
  37  * externally created
  38  * </p>
  39  */
  40 public class OpenFile {
  41         private final static Log log = LogFactory.getLog(OpenFile.class);
  42
  43         // /* DEPENDENCY INJECTION */
  44         // private String openFileServiceId;
  45         //
  46         // public final static String PARAM_FILE_NAME =
  47         // OpenFileService.PARAM_FILE_NAME;
  48         // public final static String PARAM_FILE_URI =
  49         // OpenFileService.PARAM_FILE_URI; // "param.fileURI";
  50
  51         public Object execute(String openFileServiceId, String fileUri,
  52                         String fileName) {
  53                 // // Sanity check
  54                 // if (fileUri == null || "".equals(fileUri.trim())
  55                 // || openFileServiceId == null
  56                 // || "".equals(openFileServiceId.trim()))
  57                 // return null;
  58
  59                 StringBuilder url = new StringBuilder();
  60                 url.append(RWT.getServiceManager().getServiceHandlerUrl(
  61                                 openFileServiceId));
  62
  63                 url.append("&").append(OpenFileService.PARAM_FILE_NAME).append("=");
  64                 url.append(fileName);
  65                 url.append("&").append(OpenFileService.PARAM_FILE_URI).append("=");
  66                 url.append(fileUri);
  67
  68                 String downloadUrl = url.toString();
  69                 if (log.isTraceEnabled())
  70                         log.debug("URL : " + downloadUrl);
  71
  72                 UrlLauncher launcher = RWT.getClient().getService(UrlLauncher.class);
  73                 launcher.openURL(downloadUrl);
  74                 return null;
  75         }
  76
  77         // /* DEPENDENCY INJECTION */
  78         // public void setOpenFileServiceId(String openFileServiceId) {
  79         // this.openFileServiceId = openFileServiceId;
  80         // }
  81 }