Java tutorial
/** * This file is part of mycollab-mobile. * * mycollab-mobile is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation, either version 3 of the License, or * (at your option) any later version. * * mycollab-mobile is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with mycollab-mobile. If not, see <http://www.gnu.org/licenses/>. */ package com.mycollab.mobile.module.project.ui; import com.mycollab.common.domain.CommentWithBLOBs; import com.mycollab.common.i18n.FileI18nEnum; import com.mycollab.common.i18n.GenericI18Enum; import com.mycollab.common.service.CommentService; import com.mycollab.core.utils.ImageUtil; import com.mycollab.mobile.ui.AbstractMobilePageView; import com.mycollab.mobile.ui.MobileAttachmentUtils; import com.mycollab.mobile.ui.TempFileFactory; import com.mycollab.mobile.ui.MobileUIConstants; import com.mycollab.module.ecm.service.ResourceService; import com.mycollab.module.file.AttachmentUtils; import com.mycollab.module.project.CurrentProjectVariables; import com.mycollab.spring.AppContextUtil; import com.mycollab.vaadin.MyCollabUI; import com.mycollab.vaadin.UserUIContext; import com.mycollab.vaadin.ui.ELabel; import com.mycollab.vaadin.ui.NotificationUtil; import com.vaadin.server.FontAwesome; import com.vaadin.server.StreamVariable; import com.vaadin.ui.*; import org.apache.commons.collections.MapUtils; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import org.vaadin.easyuploads.*; import org.vaadin.viritin.button.MButton; import org.vaadin.viritin.layouts.MHorizontalLayout; import org.vaadin.viritin.layouts.MVerticalLayout; import javax.imageio.ImageIO; import java.awt.image.BufferedImage; import java.io.*; import java.util.*; /** * @author MyCollab Ltd. * @since 4.4.0 */ public class ProjectCommentInputView extends AbstractMobilePageView { private static final Logger LOG = LoggerFactory.getLogger(ProjectCommentInputView.class.getName()); private TextArea commentInput; private String type; private String typeId; private Integer extraTypeId; private FileBuffer receiver; private MultiUpload uploadField; private Map<String, File> fileStores; private ResourceService resourceService; private CssLayout statusWrapper; public ProjectCommentInputView(String typeVal, String typeIdVal, Integer extraTypeIdVal) { this.setCaption(UserUIContext.getMessage(GenericI18Enum.ACTION_ADD_COMMENT)); resourceService = AppContextUtil.getSpringBean(ResourceService.class); MVerticalLayout content = new MVerticalLayout().withFullWidth().withStyleName("comment-input"); this.setContent(content); type = typeVal; typeId = typeIdVal; extraTypeId = extraTypeIdVal; prepareUploadField(); commentInput = new TextArea(); commentInput.setWidth("100%"); commentInput.setInputPrompt("---"); MButton postBtn = new MButton(UserUIContext.getMessage(GenericI18Enum.BUTTON_SAVE), clickEvent -> { final CommentWithBLOBs comment = new CommentWithBLOBs(); comment.setComment(commentInput.getValue()); comment.setCreatedtime(new GregorianCalendar().getTime()); comment.setCreateduser(UserUIContext.getUsername()); comment.setSaccountid(MyCollabUI.getAccountId()); comment.setType(type); comment.setTypeid("" + typeId); comment.setExtratypeid(extraTypeId); final CommentService commentService = AppContextUtil.getSpringBean(CommentService.class); int commentId = commentService.saveWithSession(comment, UserUIContext.getUsername()); String attachmentPath = AttachmentUtils.getCommentAttachmentPath(type, MyCollabUI.getAccountId(), CurrentProjectVariables.getProjectId(), typeId, commentId); if (!"".equals(attachmentPath)) { saveContentsToRepo(attachmentPath); } getNavigationManager().navigateBack(); }); this.setRightComponent(postBtn); content.with(commentInput, ELabel.hr(), uploadField, statusWrapper); } private void prepareUploadField() { statusWrapper = new CssLayout(); statusWrapper.setWidth("100%"); statusWrapper.setStyleName("upload-status-wrap"); receiver = createReceiver(); uploadField = new MultiUpload(); uploadField.setButtonCaption(UserUIContext.getMessage(GenericI18Enum.BUTTON_UPLOAD)); uploadField.setImmediate(true); uploadField.setHandler(new MobileUploadHandler()); } private Component createAttachmentRow(String fileName) { final MHorizontalLayout uploadSucceedLayout = new MHorizontalLayout().withFullWidth(); Label uploadResult = new Label(fileName); uploadSucceedLayout.with(uploadResult).expand(uploadResult); MButton removeAttachment = new MButton("", clickEvent -> statusWrapper.removeComponent(uploadSucceedLayout)) .withIcon(FontAwesome.TRASH_O).withStyleName(MobileUIConstants.BUTTON_LINK); uploadSucceedLayout.addComponent(removeAttachment); return uploadSucceedLayout; } private void saveContentsToRepo(String attachmentPath) { if (MapUtils.isNotEmpty(fileStores)) { for (Map.Entry<String, File> entry : fileStores.entrySet()) { try { String fileName = entry.getKey(); File file = entry.getValue(); String fileExt = ""; int index = fileName.lastIndexOf("."); if (index > 0) { fileExt = fileName.substring(index + 1, fileName.length()); } if ("jpg".equalsIgnoreCase(fileExt) || "png".equalsIgnoreCase(fileExt)) { try { BufferedImage bufferedImage = ImageIO.read(file); int imgHeight = bufferedImage.getHeight(); int imgWidth = bufferedImage.getWidth(); BufferedImage scaledImage; float scale; float destWidth = 974; float destHeight = 718; float scaleX = Math.min(destHeight / imgHeight, 1); float scaleY = Math.min(destWidth / imgWidth, 1); scale = Math.min(scaleX, scaleY); scaledImage = ImageUtil.scaleImage(bufferedImage, scale); ByteArrayOutputStream outStream = new ByteArrayOutputStream(); ImageIO.write(scaledImage, fileExt, outStream); resourceService.saveContent( MobileAttachmentUtils.constructContent(fileName, attachmentPath), UserUIContext.getUsername(), new ByteArrayInputStream(outStream.toByteArray()), MyCollabUI.getAccountId()); } catch (IOException e) { LOG.error("Error in upload file", e); resourceService.saveContent( MobileAttachmentUtils.constructContent(fileName, attachmentPath), UserUIContext.getUsername(), new FileInputStream(file), MyCollabUI.getAccountId()); } } else { resourceService.saveContent( MobileAttachmentUtils.constructContent(fileName, attachmentPath), UserUIContext.getUsername(), new FileInputStream(file), MyCollabUI.getAccountId()); } } catch (FileNotFoundException e) { LOG.error("Error when attach content in UI", e); } } } } private FileBuffer createReceiver() { FileBuffer receiver = new FileBuffer(UploadField.FieldType.FILE) { private static final long serialVersionUID = 1L; @Override public FileFactory getFileFactory() { return new TempFileFactory(); } @Override public void setLastMimeType(String mimeType) { } @Override public void setLastFileName(String fileName) { } }; receiver.setDeleteFiles(false); return receiver; } private void receiveFile(File file, String fileName, String mimeType, long length) { if (fileStores == null) { fileStores = new HashMap<>(); } if (fileStores.containsKey(fileName)) { NotificationUtil.showWarningNotification( UserUIContext.getMessage(FileI18nEnum.ERROR_FILE_IS_EXISTED, fileName)); } else { fileStores.put(fileName, file); } } private class MobileUploadHandler implements MultiUploadHandler { private LinkedList<ProgressBar> indicators; @Override public void streamingStarted(StreamVariable.StreamingStartEvent event) { } @Override public void streamingFinished(StreamVariable.StreamingEndEvent event) { String fileName = event.getFileName(); int index = fileName.lastIndexOf("."); if (index > 0) { String fileExt = fileName.substring(index + 1, fileName.length()); fileName = MobileAttachmentUtils.ATTACHMENT_NAME_PREFIX + System.currentTimeMillis() + "." + fileExt; } if (!indicators.isEmpty()) { statusWrapper.replaceComponent(indicators.remove(0), createAttachmentRow(fileName)); } File file = receiver.getFile(); receiveFile(file, fileName, event.getMimeType(), event.getBytesReceived()); receiver.setValue(null); } @Override public void streamingFailed(StreamVariable.StreamingErrorEvent event) { if (!indicators.isEmpty()) { Label uploadResult = new Label("Upload failed! File: " + event.getFileName()); uploadResult.setStyleName("upload-status"); statusWrapper.replaceComponent(indicators.remove(0), uploadResult); } } @Override public void onProgress(StreamVariable.StreamingProgressEvent event) { long readBytes = event.getBytesReceived(); long contentLength = event.getContentLength(); float f = (float) readBytes / (float) contentLength; indicators.get(0).setValue(f); } @Override public OutputStream getOutputStream() { MultiUpload.FileDetail next = uploadField.getPendingFileNames().iterator().next(); return receiver.receiveUpload(next.getFileName(), next.getMimeType()); } @Override public void filesQueued(Collection<MultiUpload.FileDetail> pendingFileNames) { UI.getCurrent().setPollInterval(500); if (indicators == null) { indicators = new LinkedList<>(); } for (MultiUpload.FileDetail f : pendingFileNames) { ProgressBar pi = new ProgressBar(); pi.setValue(0f); pi.setStyleName("upload-progress"); pi.setWidth("100%"); statusWrapper.addComponent(pi); pi.setEnabled(true); pi.setVisible(true); indicators.add(pi); } } @Override public boolean isInterrupted() { return false; } } }