Java tutorial
/* * This Source Code Form is subject to the terms of the Mozilla Public * License, v. 2.0. If a copy of the MPL was not distributed with this * file, You can obtain one at http://mozilla.org/MPL/2.0/. * Copyright (c) 2014, MPL CodeInside http://codeinside.ru */ package ru.codeinside.gses.webui.form; import com.google.common.base.Function; import com.vaadin.Application; import com.vaadin.terminal.FileResource; import com.vaadin.terminal.ThemeResource; import com.vaadin.ui.Button; import com.vaadin.ui.CustomComponent; import com.vaadin.ui.Embedded; import com.vaadin.ui.HorizontalLayout; import com.vaadin.ui.Label; import com.vaadin.ui.Panel; import com.vaadin.ui.VerticalLayout; import commons.Streams; import ru.codeinside.adm.AdminServiceProvider; import ru.codeinside.adm.database.Bid; import ru.codeinside.adm.database.Employee; import ru.codeinside.gses.form.FormData; import ru.codeinside.gses.form.FormEntry; import ru.codeinside.gses.webui.osgi.FormConverterCustomicer; import java.io.BufferedOutputStream; import java.io.File; import java.io.FileNotFoundException; import java.io.FileOutputStream; import java.io.IOException; import java.io.OutputStream; import java.nio.charset.Charset; import java.util.Date; import java.util.concurrent.atomic.AtomicInteger; public class PrintPanel extends CustomComponent { final static ThemeResource PRINT_ICON = new ThemeResource("../custom/icon/printer22.png"); final static ThemeResource DOWNLOAD_ICON = new ThemeResource("../custom/icon/download22.png"); final static AtomicInteger SERIAL = new AtomicInteger(0); File htmlFile; File docxFile; PrintPanel(FormDataSource dataSource, Application app, String procedureName, String taskId) { setSizeFull(); try { String orgName = AdminServiceProvider.get().withEmployee(app.getUser().toString(), new Function<Employee, String>() { @Override public String apply(Employee employee) { return employee.getOrganization().getName(); } }); htmlFile = Streams.createTempFile("form-", ".html"); docxFile = Streams.createTempFile("form-", ".docx"); FormEntry formEntry = dataSource.createFormTree(); FormData data = new FormData(); data.orgName = orgName; data.serviceName = procedureName; if (taskId != null) { Bid bid = AdminServiceProvider.get().getBidByTask(taskId); data.receiptId = bid.getId(); data.receiptDate = bid.getDateCreated(); } else { data.receiptDate = new Date(); } data.htmlFile = htmlFile.getAbsolutePath(); data.docxFile = docxFile.getAbsolutePath(); data.entries = formEntry.children; FormConverterCustomicer.convert(data); String classId = "doc" + SERIAL.incrementAndGet(); Button print = new Button("", new PrintAction(classId)); print.setStyleName("img-button"); print.setIcon(PRINT_ICON); print.setImmediate(true); Button download = new Button("", new DownloadAction(docxFile)); download.setStyleName("img-button"); download.setIcon(DOWNLOAD_ICON); download.setImmediate(true); Panel documentPanel = createDocumentPanel(app, classId); HorizontalLayout buttons = new HorizontalLayout(); buttons.setImmediate(true); buttons.setSpacing(true); buttons.addComponent(print); buttons.addComponent(download); VerticalLayout printLayout = new VerticalLayout(); printLayout.setSizeFull(); printLayout.addComponent(buttons); printLayout.addComponent(documentPanel); printLayout.setExpandRatio(documentPanel, 1f); setCompositionRoot(printLayout); } catch (IOException e) { setCompositionRoot(new Label(e.getMessage())); } } PrintPanel(String content, Application app) { try { htmlFile = Streams.createTempFile("form-", ".html"); String classId = "doc" + SERIAL.incrementAndGet(); Button print = new Button("", new PrintAction(classId)); print.setStyleName("img-button"); print.setIcon(PRINT_ICON); print.setImmediate(true); buildHtmlFile(content); Panel documentPanel = createDocumentPanel(app, classId); documentPanel.setHeight(500, UNITS_PIXELS); HorizontalLayout buttons = new HorizontalLayout(); buttons.setImmediate(true); buttons.setSpacing(true); buttons.addComponent(print); VerticalLayout printLayout = new VerticalLayout(); printLayout.setSizeFull(); printLayout.addComponent(buttons); printLayout.addComponent(documentPanel); printLayout.setExpandRatio(documentPanel, 1f); setCompositionRoot(printLayout); } catch (IOException e) { e.printStackTrace(); } } private void buildHtmlFile(String content) throws IOException { OutputStream os = null; try { os = new BufferedOutputStream(new FileOutputStream(htmlFile.getAbsolutePath())); os.write(content.getBytes(Charset.forName("UTF-8"))); } catch (FileNotFoundException e) { e.printStackTrace(); } finally { close(os); } } private Panel createDocumentPanel(Application app, String classId) { Embedded document = new Embedded(null, new FileResource(htmlFile, app)); document.setDebugId(classId); document.setType(Embedded.TYPE_BROWSER); document.setSizeFull(); VerticalLayout documentLayout = new VerticalLayout(); documentLayout.setMargin(true); documentLayout.setSizeFull(); documentLayout.addComponent(document); documentLayout.setExpandRatio(document, 1f); Panel documentPanel = new Panel(documentLayout); documentPanel.setSizeFull(); return documentPanel; } @Override public void detach() { if (htmlFile != null) { htmlFile.delete(); } if (docxFile != null) { docxFile.delete(); } super.detach(); } final static class PrintAction implements Button.ClickListener { final String classId; public PrintAction(String classId) { this.classId = classId; } @Override public void buttonClick(Button.ClickEvent event) { String script = "try{var f = document.getElementById('" + classId + "').firstChild;" + "f.focus();" + "f.contentWindow.print();} catch(e){alert(e);}"; event.getButton().getWindow().executeJavaScript(script); } } final static class DownloadAction implements Button.ClickListener { final File file; DownloadAction(File file) { this.file = file; } @Override public void buttonClick(Button.ClickEvent event) { Button button = event.getButton(); button.getWindow().open(new FileDownloadResource(false, file, button.getApplication()), "_top", false); } } private void close(OutputStream os) { if (os != null) { try { os.flush(); os.close(); } catch (IOException e) { e.printStackTrace(); } } } }