base/runtime/org.argeo.eclipse.ui.rap/src/main/java/org/argeo/eclipse/ui/specific/SimpleOpenFile.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.core.commands.AbstractHandler;
  21 import org.eclipse.core.commands.ExecutionEvent;
  22 import org.eclipse.core.commands.ExecutionException;
  23 import org.eclipse.rap.rwt.RWT;
  24 import org.eclipse.rap.rwt.client.service.UrlLauncher;
  25
  26 /**
  27  * Rap specific handler to open a file stored in the server file system, among
  28  * other tmp files created for exports.
  29  *
  30  */
  31 public class SimpleOpenFile extends AbstractHandler {
  32         private final static Log log = LogFactory
  33                         .getLog(SimpleOpenFile.class);
  34
  35         private String serviceId;
  36
  37         public final static String PARAM_FILE_NAME = FileDownloadService.PARAM_FILE_NAME;
  38         public final static String PARAM_FILE_PATH = FileDownloadService.PARAM_FILE_PATH;
  39
  40         public Object execute(ExecutionEvent event) throws ExecutionException {
  41                 String fileName = event.getParameter(PARAM_FILE_NAME);
  42                 String filePath = event.getParameter(PARAM_FILE_PATH);
  43
  44                 // sanity check
  45                 if (serviceId == null || "".equals(serviceId.trim())
  46                                 || fileName == null || "".equals(fileName.trim())
  47                                 || filePath == null || "".equals(filePath.trim()))
  48                         return null;
  49
  50                 StringBuilder url = new StringBuilder();
  51                 url.append("&").append(PARAM_FILE_NAME).append("=");
  52                 url.append(fileName);
  53                 url.append("&").append(PARAM_FILE_PATH).append("=");
  54                 url.append(filePath);
  55
  56                 String downloadUrl = RWT.getServiceManager().getServiceHandlerUrl(
  57                                 serviceId)
  58                                 + url.toString();
  59                 if (log.isTraceEnabled())
  60                         log.debug("URL : " + downloadUrl);
  61
  62                 UrlLauncher launcher = RWT.getClient().getService(UrlLauncher.class);
  63                 launcher.openURL(downloadUrl);
  64
  65                 // These lines are useless in the current use case but might be
  66                 // necessary with new browsers. Stored here for memo
  67                 // response.setContentType("application/force-download");
  68                 // response.setHeader("Content-Disposition", contentDisposition);
  69                 // response.setHeader("Content-Transfer-Encoding", "binary");
  70                 // response.setHeader("Pragma", "no-cache");
  71                 // response.setHeader("Cache-Control", "no-cache, must-revalidate");
  72                 return null;
  73         }
  74
  75         /* DEPENDENCY INJECTION */
  76         public void setDownloadServiceHandlerId(String downloadServiceHandlerId) {
  77                 this.serviceId = downloadServiceHandlerId;
  78         }
  79 }