Java tutorial
/* * Licensed to the Apache Software Foundation (ASF) under one * or more contributor license agreements. See the NOTICE file * distributed with this work for additional information * regarding copyright ownership. The ASF licenses this file * to you 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 de.unioninvestment.portal.explorer.view.vfs; import java.io.ByteArrayInputStream; import java.io.ByteArrayOutputStream; import java.io.File; import java.io.FileInputStream; import java.io.FileNotFoundException; import java.io.FileOutputStream; import java.io.IOException; import java.io.InputStream; import java.io.OutputStream; import java.net.SocketException; import java.text.SimpleDateFormat; import java.util.Collection; import java.util.Date; import java.util.List; import java.util.Set; import java.util.StringTokenizer; import java.util.logging.Level; import java.util.logging.Logger; import java.util.zip.ZipEntry; import java.util.zip.ZipOutputStream; import org.apache.commons.io.FileUtils; import org.apache.commons.io.IOUtils; import org.apache.commons.vfs2.FileContent; import org.apache.commons.vfs2.FileObject; import org.apache.commons.vfs2.FileSystemException; import org.apache.commons.vfs2.FileSystemManager; import org.apache.commons.vfs2.FileSystemOptions; import org.apache.commons.vfs2.FileType; import org.vaadin.easyuploads.FileBuffer; import org.vaadin.easyuploads.MultiFileUpload; import com.liferay.portal.kernel.exception.SystemException; import com.liferay.portal.model.Role; import com.liferay.portal.model.User; import com.vaadin.data.Item; import com.vaadin.data.Property; import com.vaadin.data.Property.ConversionException; import com.vaadin.data.Property.ReadOnlyException; import com.vaadin.data.Property.ValueChangeEvent; import com.vaadin.terminal.PaintException; import com.vaadin.terminal.PaintTarget; import com.vaadin.terminal.gwt.server.WebBrowser; import com.vaadin.ui.Button; import com.vaadin.ui.HorizontalLayout; import com.vaadin.ui.Table; import com.vaadin.ui.Alignment; import com.vaadin.ui.TextField; import com.vaadin.ui.Upload; import com.vaadin.ui.VerticalLayout; import com.vaadin.ui.Window; import com.vaadin.ui.Button.ClickEvent; import com.vaadin.ui.Upload.FailedEvent; import com.vaadin.ui.Upload.SucceededEvent; import com.vaadin.ui.Window.Notification; import de.unioninvestment.portal.VFSFileExplorerPortlet; import de.unioninvestment.portal.explorer.event.TableChangedEvent; import de.unioninvestment.portal.explorer.event.TableChangedEventHandler; import de.unioninvestment.portal.explorer.file.DownloadResource; import de.unioninvestment.portal.explorer.file.UploadReceiver; public class TableView extends VerticalLayout { private static final long serialVersionUID = 1L; private static final Logger logger = Logger.getLogger(TableView.class.getName()); private static final String TABLE_PROP_FILE_NAME = "Name"; private static final String TABLE_PROP_FILE_SIZE = "Size (bytes)"; private static final String TABLE_PROP_FILE_DATE = "Date"; String selectedDir; Collection markedRows = null; VFSFileExplorerPortlet instance; FileSystemManager fileSystemManager; FileSystemOptions opts; ConfigBean cb; MultiFileUpload multiFileUpload; Upload upload; // public TableView(VFSFileExplorerPortlet instance, FileSystemManager fileSystemManager, FileSystemOptions opts, ConfigBean cb) { this.instance = instance; this.fileSystemManager = fileSystemManager; this.opts = opts; this.cb = cb; } public void paint(PaintTarget target) throws PaintException { WebBrowser webBrowser = (WebBrowser) getWindow().getTerminal(); if (webBrowser.isIE()) { multiFileUpload.setVisible(false); upload.setVisible(true); } else { multiFileUpload.setVisible(true); upload.setVisible(false); } super.paint(target); } public void attach() { selectedDir = cb.getVfsUrl(); try { final VFSFileExplorerPortlet app = instance; final User user = (User) app.getUser(); final FileSystemManager fFileSystemManager = fileSystemManager; final FileSystemOptions fOpts = opts; final Table table = new Table() { private static final long serialVersionUID = 1L; protected String formatPropertyValue(Object rowId, Object colId, Property property) { if (TABLE_PROP_FILE_NAME.equals(colId)) { if (property != null && property.getValue() != null) { return getDisplayPath(property.getValue().toString()); } } if (TABLE_PROP_FILE_DATE.equals(colId)) { if (property != null && property.getValue() != null) { SimpleDateFormat sdf = new SimpleDateFormat("dd.MMM yyyy HH:mm:ss"); return sdf.format((Date) property.getValue()); } } return super.formatPropertyValue(rowId, colId, property); } }; table.setSizeFull(); table.setMultiSelect(true); table.setSelectable(true); table.setImmediate(true); table.addContainerProperty(TABLE_PROP_FILE_NAME, String.class, null); table.addContainerProperty(TABLE_PROP_FILE_SIZE, Long.class, null); table.addContainerProperty(TABLE_PROP_FILE_DATE, Date.class, null); if (app != null) { app.getEventBus().addHandler(TableChangedEvent.class, new TableChangedEventHandler() { private static final long serialVersionUID = 1L; @Override public void onValueChanged(TableChangedEvent event) { try { selectedDir = event.getNewDirectory(); fillTableData(event.getNewDirectory(), table, fFileSystemManager, fOpts, null); } catch (IOException e) { e.printStackTrace(); } } }); } table.addListener(new Table.ValueChangeListener() { private static final long serialVersionUID = 1L; public void valueChange(ValueChangeEvent event) { Set<?> value = (Set<?>) event.getProperty().getValue(); if (null == value || value.size() == 0) { markedRows = null; } else { markedRows = value; } } }); fillTableData(selectedDir, table, fFileSystemManager, fOpts, null); Button btDownload = new Button("Download File(s)"); btDownload.addListener(new Button.ClickListener() { private static final long serialVersionUID = 1L; public void buttonClick(ClickEvent event) { if (markedRows == null || markedRows.size() == 0) getWindow().showNotification("No Files selected !", Window.Notification.TYPE_WARNING_MESSAGE); else { String[] files = new String[markedRows.size()]; int fileCount = 0; for (Object item : markedRows) { Item it = table.getItem(item); files[fileCount] = it.getItemProperty(TABLE_PROP_FILE_NAME).toString(); fileCount++; } File dlFile = null; if (fileCount == 1) { try { String fileName = files[0]; dlFile = getFileFromVFSObject(fFileSystemManager, fOpts, fileName); logger.log(Level.INFO, "vfs2portlet: download file " + fileName + " by " + user.getScreenName()); } catch (Exception e) { e.printStackTrace(); } } else { byte[] buf = new byte[1024]; try { dlFile = File.createTempFile("Files", ".zip"); ZipOutputStream out = new ZipOutputStream( new FileOutputStream(dlFile.getAbsolutePath())); for (int i = 0; i < files.length; i++) { String fileName = files[i]; logger.log(Level.INFO, "vfs2portlet: download file " + fileName + " by " + user.getScreenName()); File f = getFileFromVFSObject(fFileSystemManager, fOpts, fileName); FileInputStream in = new FileInputStream(f); out.putNextEntry(new ZipEntry(f.getName())); int len; while ((len = in.read(buf)) > 0) { out.write(buf, 0, len); } out.closeEntry(); in.close(); } out.close(); } catch (IOException e) { } } if (dlFile != null) { try { DownloadResource downloadResource = new DownloadResource(dlFile, getApplication()); getApplication().getMainWindow().open(downloadResource, "_new"); } catch (FileNotFoundException e) { getWindow().showNotification("File not found !", Window.Notification.TYPE_ERROR_MESSAGE); e.printStackTrace(); } } if (dlFile != null) { dlFile.delete(); } } } }); Button btDelete = new Button("Delete File(s)"); btDelete.addListener(new Button.ClickListener() { private static final long serialVersionUID = 1L; public void buttonClick(ClickEvent event) { if (markedRows == null || markedRows.size() == 0) getWindow().showNotification("No Files selected !", Window.Notification.TYPE_WARNING_MESSAGE); else { for (Object item : markedRows) { Item it = table.getItem(item); String fileToDelete = it.getItemProperty(TABLE_PROP_FILE_NAME).toString(); logger.log(Level.INFO, "Delete File " + fileToDelete); try { FileObject delFile = fFileSystemManager.resolveFile(fileToDelete, fOpts); logger.log(Level.INFO, "vfs2portlet: delete file " + delFile.getName() + " by " + user.getScreenName()); boolean b = delFile.delete(); if (b) logger.log(Level.INFO, "delete ok"); else logger.log(Level.INFO, "delete failed"); } catch (FileSystemException e) { e.printStackTrace(); } } try { fillTableData(selectedDir, table, fFileSystemManager, fOpts, null); } catch (IOException e) { e.printStackTrace(); } } } }); Button selAll = new Button("Select All", new Button.ClickListener() { private static final long serialVersionUID = 1L; public void buttonClick(Button.ClickEvent event) { table.setValue(table.getItemIds()); } }); Button selNone = new Button("Select None", new Button.ClickListener() { private static final long serialVersionUID = 1L; public void buttonClick(Button.ClickEvent event) { table.setValue(null); } }); final UploadReceiver receiver = new UploadReceiver(); upload = new Upload(null, receiver); upload.setImmediate(true); upload.setButtonCaption("File Upload"); upload.addListener((new Upload.SucceededListener() { private static final long serialVersionUID = 1L; public void uploadSucceeded(SucceededEvent event) { try { String fileName = receiver.getFileName(); ByteArrayOutputStream bos = receiver.getUploadedFile(); byte[] buf = bos.toByteArray(); ByteArrayInputStream bis = new ByteArrayInputStream(buf); String fileToAdd = selectedDir + "/" + fileName; logger.log(Level.INFO, "vfs2portlet: add file " + fileToAdd + " by " + user.getScreenName()); FileObject localFile = fFileSystemManager.resolveFile(fileToAdd, fOpts); localFile.createFile(); OutputStream localOutputStream = localFile.getContent().getOutputStream(); IOUtils.copy(bis, localOutputStream); localOutputStream.flush(); fillTableData(selectedDir, table, fFileSystemManager, fOpts, null); app.getMainWindow().showNotification("Upload " + fileName + " successful ! ", Notification.TYPE_TRAY_NOTIFICATION); } catch (Exception e) { e.printStackTrace(); } } })); upload.addListener(new Upload.FailedListener() { private static final long serialVersionUID = 1L; public void uploadFailed(FailedEvent event) { System.out.println("Upload failed ! "); } }); multiFileUpload = new MultiFileUpload() { private static final long serialVersionUID = 1L; protected void handleFile(File file, String fileName, String mimeType, long length) { try { byte[] buf = FileUtils.readFileToByteArray(file); ByteArrayInputStream bis = new ByteArrayInputStream(buf); String fileToAdd = selectedDir + "/" + fileName; logger.log(Level.INFO, "vfs2portlet: add file " + fileToAdd + " by " + user.getScreenName()); FileObject localFile = fFileSystemManager.resolveFile(fileToAdd, fOpts); localFile.createFile(); OutputStream localOutputStream = localFile.getContent().getOutputStream(); IOUtils.copy(bis, localOutputStream); localOutputStream.flush(); fillTableData(selectedDir, table, fFileSystemManager, fOpts, null); } catch (FileSystemException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } } protected FileBuffer createReceiver() { FileBuffer receiver = super.createReceiver(); /* * Make receiver not to delete files after they have been * handled by #handleFile(). */ receiver.setDeleteFiles(false); return receiver; } }; multiFileUpload.setUploadButtonCaption("Upload File(s)"); HorizontalLayout filterGrp = new HorizontalLayout(); filterGrp.setSpacing(true); final TextField tfFilter = new TextField(); Button btFileFilter = new Button("Filter", new Button.ClickListener() { private static final long serialVersionUID = 1L; public void buttonClick(Button.ClickEvent event) { String filterVal = (String) tfFilter.getValue(); try { if (filterVal == null || filterVal.length() == 0) { fillTableData(selectedDir, table, fFileSystemManager, fOpts, null); } else { fillTableData(selectedDir, table, fFileSystemManager, fOpts, filterVal); } } catch (IOException e) { e.printStackTrace(); } } }); Button btResetFileFilter = new Button("Reset", new Button.ClickListener() { private static final long serialVersionUID = 1L; public void buttonClick(Button.ClickEvent event) { try { tfFilter.setValue(""); fillTableData(selectedDir, table, fFileSystemManager, fOpts, null); } catch (ReadOnlyException e) { e.printStackTrace(); } catch (ConversionException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } } }); filterGrp.addComponent(tfFilter); filterGrp.addComponent(btFileFilter); filterGrp.addComponent(btResetFileFilter); addComponent(filterGrp); addComponent(table); HorizontalLayout btGrp = new HorizontalLayout(); btGrp.setSpacing(true); btGrp.addComponent(selAll); btGrp.setComponentAlignment(selAll, Alignment.MIDDLE_CENTER); btGrp.addComponent(selNone); btGrp.setComponentAlignment(selNone, Alignment.MIDDLE_CENTER); btGrp.addComponent(btDownload); btGrp.setComponentAlignment(btDownload, Alignment.MIDDLE_CENTER); List<Role> roles = null; boolean matchUserRole = false; try { if (user != null) { roles = user.getRoles(); } } catch (SystemException e) { e.printStackTrace(); } if (cb.isDeleteEnabled() && cb.getDeleteRoles().length() == 0) { btGrp.addComponent(btDelete); btGrp.setComponentAlignment(btDelete, Alignment.MIDDLE_CENTER); } else if (cb.isDeleteEnabled() && cb.getDeleteRoles().length() > 0) { matchUserRole = isUserInRole(roles, cb.getDeleteRoles()); if (matchUserRole) { btGrp.addComponent(btDelete); btGrp.setComponentAlignment(btDelete, Alignment.MIDDLE_CENTER); } } if (cb.isUploadEnabled() && cb.getUploadRoles().length() == 0) { btGrp.addComponent(upload); btGrp.setComponentAlignment(upload, Alignment.MIDDLE_CENTER); btGrp.addComponent(multiFileUpload); btGrp.setComponentAlignment(multiFileUpload, Alignment.MIDDLE_CENTER); } else if (cb.isUploadEnabled() && cb.getUploadRoles().length() > 0) { matchUserRole = isUserInRole(roles, cb.getUploadRoles()); if (matchUserRole) { btGrp.addComponent(upload); btGrp.setComponentAlignment(upload, Alignment.MIDDLE_CENTER); btGrp.addComponent(multiFileUpload); btGrp.setComponentAlignment(multiFileUpload, Alignment.MIDDLE_CENTER); } } addComponent(btGrp); } catch (SocketException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } } private boolean isUserInRole(List<Role> roles, String deleteRoles) { StringTokenizer roleTokens = new StringTokenizer(deleteRoles, ","); while (roleTokens.hasMoreTokens()) { String curTok = roleTokens.nextToken(); for (Role r : roles) { if (r.getName().equalsIgnoreCase(curTok)) return true; } } return false; } private void fillTableData(String selectedDir, Table table, FileSystemManager fsManager, FileSystemOptions opts, String filterVal) throws IOException { table.removeAllItems(); FileObject fileObject = fsManager.resolveFile(selectedDir, opts); FileObject[] files = fileObject.getChildren(); for (FileObject file : files) { if (filterVal == null) { addTableItem(table, file); } else { String regex = filterVal.replace("?", ".?").replace("*", ".*?"); String name = getDisplayPath(file.getName().toString()); if (name.matches(regex)) addTableItem(table, file); } } } private void addTableItem(Table table, FileObject file) throws FileSystemException { if (file.getType() == FileType.FILE) { Item item = table.addItem(file.getName()); item.getItemProperty(TABLE_PROP_FILE_NAME).setValue(file.getName().toString()); item.getItemProperty(TABLE_PROP_FILE_SIZE).setValue(file.getContent().getSize()); item.getItemProperty(TABLE_PROP_FILE_DATE).setValue(new Date(file.getContent().getLastModifiedTime())); } } private static String getDisplayPath(String fn) { int i = fn.lastIndexOf("/"); return fn.substring(i + 1); } private File getFileFromVFSObject(FileSystemManager fileSystemManager, FileSystemOptions opts, String vfsPath) { OutputStream outputStream = null; try { FileObject downloadFile = fileSystemManager.resolveFile(vfsPath, opts); FileContent fc = downloadFile.getContent(); InputStream inputStream = fc.getInputStream(); String fn = getDisplayPath(vfsPath); String tDir = System.getProperty("java.io.tmpdir"); File locFile = new File(tDir, fn); outputStream = new FileOutputStream(locFile); int read = 0; byte[] bytes = new byte[1024]; while ((read = inputStream.read(bytes)) != -1) { outputStream.write(bytes, 0, read); } return locFile; } catch (FileSystemException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } finally { try { if (outputStream != null) outputStream.close(); } catch (IOException e) { e.printStackTrace(); } } return null; } }