+/*
+ * Copyright (C) 2007-2012 Mathieu Baudier
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
package org.argeo.eclipse.ui.specific;
-import java.awt.Desktop;
-import java.io.BufferedInputStream;
-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 org.apache.commons.io.IOUtils;
-import org.argeo.ArgeoException;
-
-//import org.apache.commons.io;
+import org.apache.commons.logging.Log;
+import org.apache.commons.logging.LogFactory;
+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 BufferedInputStream bis;
+ 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 File createTmpFile(String fileName, String suffix, InputStream is) {
- File tmpFile = null;
- OutputStream os = null;
+ public void openFile(String fileName, String fileId) {
+
+ // 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 {
- tmpFile = File.createTempFile(fileName, suffix);
- os = new FileOutputStream(tmpFile);
- IOUtils.copy(is, os);
- } catch (IOException e) {
- throw new ArgeoException("Cannot open file " + fileName, e);
- } finally {
- IOUtils.closeQuietly(os);
+ 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();
}
- return tmpFile;
+
+ // 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");
}
- public void openFile(String fileName, InputStream is) {
-
- String prefix ="", extension = "";
-
- if (fileName != null){
- int ind = fileName.
- if (true){
- }
- }
-
- prefix = .substring(0,
- node.getName().lastIndexOf('.'));
- extension = node.getName().substring(
- node.getName().lastIndexOf('.'));
- try {
- Desktop desktop = null;
- if (Desktop.isDesktopSupported()) {
- desktop = Desktop.getDesktop();
- }
- desktop.open(file);
- } catch (IOException e) {
- throw new ArgeoException("Cannot open file " + file.getName(), e);
- }
+ 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();
}
-
-
- public void openFile(File file) {
- try {
- Desktop desktop = null;
- if (Desktop.isDesktopSupported()) {
- desktop = Desktop.getDesktop();
- }
- desktop.open(file);
- } catch (IOException e) {
- throw new ArgeoException("Cannot open file " + file.getName(), e);
- }
+
+ 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;
}
}
projects / lgpl / argeo-commons.git / blobdiff