-> Finalisation of file download for RAP

[lgpl/argeo-commons.git] / eclipse / runtime / org.argeo.eclipse.ui.rap / src / main / java / org / argeo / eclipse / ui / specific / DownloadServiceHandler.java

diff --git a/eclipse/runtime/org.argeo.eclipse.ui.rap/src/main/java/org/argeo/eclipse/ui/specific/DownloadServiceHandler.java b/eclipse/runtime/org.argeo.eclipse.ui.rap/src/main/java/org/argeo/eclipse/ui/specific/DownloadServiceHandler.java
new file mode 100644 (file)
index 0000000..7d47d56
--- /dev/null
+++ b/eclipse/runtime/org.argeo.eclipse.ui.rap/src/main/java/org/argeo/eclipse/ui/specific/DownloadServiceHandler.java
@@ -0,0 +1,41 @@
+package org.argeo.eclipse.ui.specific;
+
+import java.io.IOException;
+
+import javax.servlet.ServletException;
+import javax.servlet.http.HttpServletResponse;
+
+import org.argeo.ArgeoException;
+import org.eclipse.rwt.RWT;
+import org.eclipse.rwt.service.IServiceHandler;
+
+public class DownloadServiceHandler implements IServiceHandler {
+
+       private FileProvider provider;
+
+       public DownloadServiceHandler(FileProvider provider) {
+               this.provider = provider;
+       }
+
+       public void service() throws IOException, ServletException {
+               // Which file to download?
+               String fileName = RWT.getRequest().getParameter("filename");
+               String fileId = RWT.getRequest().getParameter("fileid");
+
+               // Get the file content
+               byte[] download = provider.getByteArrayFileFromId(fileId);
+
+               // Send the file in the response
+               HttpServletResponse response = RWT.getResponse();
+               response.setContentType("application/octet-stream");
+               response.setContentLength(download.length);
+               String contentDisposition = "attachment; filename=\"" + fileName + "\"";
+               response.setHeader("Content-Disposition", contentDisposition);
+               try {
+                       response.getOutputStream().write(download);
+               } catch (IOException ioe) {
+                       throw new ArgeoException("Error while writing the file " + fileName
+                                       + " to the servlet response", ioe);
+               }
+       }
+}