X-Git-Url: https://git.argeo.org/?a=blobdiff_plain;f=eclipse%2Fruntime%2Forg.argeo.eclipse.ui.rap%2Fsrc%2Fmain%2Fjava%2Forg%2Fargeo%2Feclipse%2Fui%2Fspecific%2FFileHandler.java;h=aba79c1c1912a7abfe1721620e3c051135680005;hb=70afc8f7860266f1ac93c852d552ee0971e93c15;hp=2058328a30570e8187ec1ad37b6fc735c203eb1b;hpb=5a00c032d8c7b9617777db83b0a6d60ab6b74d18;p=lgpl%2Fargeo-commons.git diff --git a/eclipse/runtime/org.argeo.eclipse.ui.rap/src/main/java/org/argeo/eclipse/ui/specific/FileHandler.java b/eclipse/runtime/org.argeo.eclipse.ui.rap/src/main/java/org/argeo/eclipse/ui/specific/FileHandler.java index 2058328a3..aba79c1c1 100644 --- a/eclipse/runtime/org.argeo.eclipse.ui.rap/src/main/java/org/argeo/eclipse/ui/specific/FileHandler.java +++ b/eclipse/runtime/org.argeo.eclipse.ui.rap/src/main/java/org/argeo/eclipse/ui/specific/FileHandler.java @@ -1,129 +1,88 @@ package org.argeo.eclipse.ui.specific; -import java.io.File; -import java.io.FileOutputStream; -import java.io.IOException; -import java.io.InputStream; -import java.io.OutputStream; +import java.net.URL; -import javax.servlet.http.HttpServletResponse; - -import org.apache.commons.io.FileUtils; -import org.apache.commons.io.IOUtils; import org.apache.commons.logging.Log; import org.apache.commons.logging.LogFactory; -import org.argeo.ArgeoException; import org.eclipse.rwt.RWT; - +import org.eclipse.rwt.service.IServiceHandler; +import org.eclipse.rwt.service.IServiceManager; +import org.eclipse.ui.PlatformUI; + +/** + * RAP SPECIFIC handler to enable the opening of a download dialog box triggered + * by whatever action in the UI + * + * Manages the registration of the effective DownloadServiceHandler at + * instantiation time. + * + * Manages the process of forwarding the request to the handler at runtime to + * open the dialog box + * + */ public class FileHandler { + public final static String FORCED_DOWNLOAD_URL_BASE_PROPERTY = "argeo.rap.specific.forcedDownloadUrlBase"; - private static Log log = LogFactory.getLog(FileHandler.class); + private final static Log log = LogFactory.getLog(FileHandler.class); - public FileHandler() { + public FileHandler(FileProvider provider) { + // Instantiate and register the DownloadServicHandler. + IServiceManager manager = RWT.getServiceManager(); + IServiceHandler handler = new DownloadServiceHandler(provider); + manager.registerServiceHandler("downloadServiceHandler", handler); } - public void openFile(String fileName, InputStream is) { + public void openFile(String fileName, String fileId) { - // // Which file to download? - // String fileName = RWT.getRequest().getParameter( "filename" ); - // // Get the file content - // byte[] download = MyDataStore.getByteArrayData( fileName ); - // // 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 e1 ) { - // e1.printStackTrace(); - // } - // - // + // See RAP FAQ: + // http://wiki.eclipse.org/RAP/FAQ#How_to_provide_download_link.3F + // And forum discussion : + // http://www.eclipse.org/forums/index.php?t=msg&th=205487&start=0&S=43d85dacc88b505402420592109c7240 try { - - // / workaround : create a tmp file. - String prefix = "", suffix = ""; - if (fileName != null) { - int ind = fileName.lastIndexOf('.'); - if (ind > 0) { - prefix = fileName.substring(0, ind); - suffix = fileName.substring(ind); - } - } - - File tmpFile = createTmpFile(prefix, suffix, is); - - // Send the file in the response - HttpServletResponse response = RWT.getResponse(); - byte[] ba = null; - ba = FileUtils.readFileToByteArray(tmpFile); - - response.setContentLength(ba.length); - - // String contentDisposition = "attachment; filename=\"" + fileName - // + "\""; - String contentDisposition = "attachment; filename=\"" + fileName - + "\""; - response.setContentType("application/force-download"); - response.setHeader("Content-Disposition", contentDisposition); - response.setHeader("Content-Transfer-Encoding", "binary"); - response.setHeader("Pragma", "no-cache"); - response.setHeader("Cache-Control", "no-cache, must-revalidate"); - - // must-revalidate"); - - if (log.isDebugEnabled()) { - log.debug("Header Set "); - } - - // header("Content-Type: application/force-download; name=\"".$localName."\""); - // 852 header("Content-Transfer-Encoding: binary"); - // 853 if($gzip){ - // 854 header("Content-Encoding: gzip"); - // 855 // If gzip, recompute data size! - // 856 $gzippedData = - // ($data?gzencode($filePathOrData,9):gzencode(file_get_contents($filePathOrData), - // 9)); - // 857 $size = strlen($gzippedData); - // 858 } - // 859 header("Content-Length: ".$size); - // 860 if ($isFile && ($size != 0)) header("Content-Range: bytes 0-" - // . ($size - 1) . "/" . $size . ";"); - // 861 - // header("Content-Disposition: attachment; filename=\"".$localName."\""); - // 862 header("Expires: 0"); - // 863 header("Cache-Control: no-cache, must-revalidate"); - // 864 header("Pragma: no-cache"); - - // IOUtils.copy(is, response.getOutputStream()); - response.getOutputStream().write(ba); - // Error.show("In Open File for RAP."); - } catch (IOException ioe) { - - throw new ArgeoException("Cannot copy input stream from file " - + fileName + " to HttpServletResponse", ioe); + if (log.isTraceEnabled()) + log.trace("URL : " + createFullDownloadUrl(fileName, fileId)); + + URL url = new URL(createFullDownloadUrl(fileName, fileId)); + PlatformUI.getWorkbench().getBrowserSupport() + .createBrowser("DownloadDialog").openURL(url); + } catch (Exception e) { + e.printStackTrace(); } + // These lines are useless in the current use case but might be + // necessary with new browsers. Stored here for memo + // response.setContentType("application/force-download"); + // response.setHeader("Content-Disposition", contentDisposition); + // response.setHeader("Content-Transfer-Encoding", "binary"); + // response.setHeader("Pragma", "no-cache"); + // response.setHeader("Cache-Control", "no-cache, must-revalidate"); } - private File createTmpFile(String prefix, String suffix, InputStream is) { - File tmpFile = null; - OutputStream os = null; - try { - tmpFile = File.createTempFile(prefix, suffix); - os = new FileOutputStream(tmpFile); - IOUtils.copy(is, os); - } catch (IOException e) { - throw new ArgeoException("Cannot open file " + prefix + "." - + suffix, e); - } finally { - IOUtils.closeQuietly(os); - } - return tmpFile; + private String createFullDownloadUrl(String fileName, String fileId) { + StringBuilder url = new StringBuilder(); + // in case RAP is proxied we need to specify the actual base URL + // TODO find a cleaner way + String forcedDownloadUrlBase = System + .getProperty(FORCED_DOWNLOAD_URL_BASE_PROPERTY); + if (forcedDownloadUrlBase != null) + url.append(forcedDownloadUrlBase); + else + url.append(RWT.getRequest().getRequestURL()); + url.append(createParamUrl(fileName, fileId)); + return url.toString(); } + private String createParamUrl(String filename, String fileId) { + StringBuilder url = new StringBuilder(); + url.append("?"); + url.append(IServiceHandler.REQUEST_PARAM); + url.append("=downloadServiceHandler"); + url.append("&filename="); + url.append(filename); + url.append("&fileid="); + url.append(fileId); + String encodedURL = RWT.getResponse().encodeURL(url.toString()); + return encodedURL; + } }