Java tutorial
/******************************************************************************* * Copyright (c) 2012 Rushan R. Gilmullin and others. * All rights reserved. This program and the accompanying materials * are made available under the terms of the Eclipse Public License v1.0 * which accompanies this distribution, and is available at * http://www.eclipse.org/legal/epl-v10.html * * Contributors: * Rushan R. Gilmullin - initial API and implementation *******************************************************************************/ package org.semanticsoft.vaaclipsedemo.cassandra.app.views; import com.vaadin.shared.MouseEventDetails.MouseButton; import com.vaadin.data.util.FilesystemContainer; import com.vaadin.data.util.FilesystemContainer.FileItem; import com.vaadin.event.Action; import com.vaadin.event.ItemClickEvent; import com.vaadin.ui.Panel; import com.vaadin.ui.Tree; import com.vaadin.ui.VerticalLayout; import com.vaadin.util.FileTypeResolver; import java.io.File; import java.lang.reflect.Field; import java.util.ArrayList; import java.util.Collections; import java.util.List; import javax.annotation.PostConstruct; import javax.annotation.PreDestroy; import javax.inject.Inject; import org.apache.commons.io.FileUtils; import org.eclipse.e4.core.contexts.IEclipseContext; import org.eclipse.e4.core.di.extensions.EventUtils; import org.eclipse.e4.core.services.events.IEventBroker; import org.eclipse.e4.ui.model.application.MApplication; import org.eclipse.e4.ui.model.application.ui.basic.MInputPart; import org.eclipse.e4.ui.model.application.ui.basic.MPart; import org.eclipse.e4.ui.model.application.ui.menu.MToolBarElement; import org.eclipse.e4.ui.model.application.ui.menu.MToolItem; import org.eclipse.e4.ui.workbench.UIEvents; import org.eclipse.e4.ui.workbench.modeling.EPartService; import org.osgi.service.event.Event; import org.osgi.service.event.EventHandler; import org.semanticsoft.e4extension.service.EPartServiceExt; import org.semanticsoft.vaaclipse.publicapi.resources.BundleResource; import org.semanticsoft.vaaclipsedemo.cassandra.app.CassandraActivator; import org.semanticsoft.vaaclipsedemo.cassandra.app.constants.CassandraConstants; /** * @author rushan * */ public class PackageExplorer { private static final Action ACTION_ADD = new Action("Add child item"); private static final Action ACTION_DELETE = new Action("Delete"); private static final Action[] ACTIONS = new Action[] { ACTION_ADD, ACTION_DELETE }; private static final String PROJECT_TREE_ROOT = "Cassandra Demo"; @Inject private IEclipseContext context; @Inject private MApplication application; @Inject IEventBroker eventBroker; @Inject private EPartService partService; @Inject private EPartServiceExt partServiceExt; @Inject private MPart part; private MToolItem linkWithEditorItem; // Gui components public Tree tree; public Panel panel; //State private boolean linkWithEditor = false; private EventHandler collapseAllHandler = new EventHandler() { public void handleEvent(Event arg0) { for (Object rootId : tree.rootItemIds()) { tree.collapseItemsRecursively(rootId); } } }; private EventHandler linkWithEditorHandler = new EventHandler() { public void handleEvent(Event event) { Boolean link = (Boolean) event.getProperty(EventUtils.DATA); setLinkWithEditor(link); } }; @Inject public void PackageExplorer(VerticalLayout parent) { panel = new Panel(); panel.setSizeFull(); parent.addComponent(panel); createProjectTree(); } @PostConstruct void registerHandler() { //this is not work, becouse the find service search only in children //linkWithEditorItem = (MToolItem) modelService.find("org.semanticsoft.vaaclipsedemo.cassandra.app.directtoolitem.linkwitheditor", application); for (MToolBarElement e : part.getToolbar().getChildren()) { if ("org.semanticsoft.vaaclipsedemo.cassandra.app.directtoolitem.linkwitheditor" .equals(e.getElementId())) { linkWithEditorItem = (MToolItem) e; } } if (linkWithEditorItem != null) setLinkWithEditor(linkWithEditorItem.isSelected()); eventBroker.subscribe(CassandraConstants.COLLAPSE_ALL, collapseAllHandler); eventBroker.subscribe(CassandraConstants.LINK_WITH_EDITOR, linkWithEditorHandler); } @PreDestroy void unregisterHandlers() { eventBroker.unsubscribe(activatePartHandler); eventBroker.unsubscribe(collapseAllHandler); eventBroker.unsubscribe(linkWithEditorHandler); } private EventHandler activatePartHandler = new EventHandler() { public void handleEvent(Event event) { Object element = event.getProperty(UIEvents.EventTags.ELEMENT); if (!(element instanceof MInputPart)) return; selectTreeNode((MInputPart) element); } }; private File demoRoot; private void createProjectTree() { demoRoot = CassandraActivator.getInstance().getSrcStore(); tree = new Tree(); tree.setSizeFull(); tree.setImmediate(true); panel.setContent(tree); FilesystemContainer fsc = new FilesystemContainer(demoRoot, true); FileTypeResolver.addExtension("java", "java"); FileTypeResolver.addIcon("java", BundleResource .valueOf("platform:/plugin/org.semanticsoft.vaaclipsedemo.cassandra.app/img/java.png")); FileTypeResolver.addExtension("xml", "xml"); FileTypeResolver.addIcon("xml", BundleResource .valueOf("platform:/plugin/org.semanticsoft.vaaclipsedemo.cassandra.app/img/xml.png")); FileTypeResolver.addExtension("e4xmi", "e4xmi"); FileTypeResolver.addIcon("e4xmi", BundleResource .valueOf("platform:/plugin/org.semanticsoft.vaaclipsedemo.cassandra.app/img/xmi.png")); FileTypeResolver.addExtension("css", "css"); FileTypeResolver.addIcon("css", BundleResource .valueOf("platform:/plugin/org.semanticsoft.vaaclipsedemo.cassandra.app/img/css.png")); FileTypeResolver.addExtension("html", "html"); FileTypeResolver.addIcon("html", BundleResource .valueOf("platform:/plugin/org.semanticsoft.vaaclipsedemo.cassandra.app/img/html.png")); FileTypeResolver.addIcon("image/png", BundleResource .valueOf("platform:/plugin/org.semanticsoft.vaaclipsedemo.cassandra.app/img/img.png")); FileTypeResolver.addIcon("inode/directory", BundleResource .valueOf("platform:/plugin/org.semanticsoft.vaaclipsedemo.cassandra.app/img/folder.png")); tree.setContainerDataSource(fsc); tree.addItemClickListener(new ItemClickEvent.ItemClickListener() { public void itemClick(final ItemClickEvent event) { if (event.getButton() == MouseButton.LEFT && event.isDoubleClick()) { tree.select(event.getItemId()); FileItem fileItem = (FileItem) event.getItem(); try { for (Field f : FileItem.class.getDeclaredFields()) { if (f.getName().equals("file")) { f.setAccessible(true); final File file = (File) f.get(fileItem); eventBroker.send(CassandraConstants.OPEN_FILE, file); break; } } } catch (Exception e) { e.printStackTrace(); } } } }); // Set tree to show the 'name' property as caption for items tree.setItemCaptionPropertyId(FilesystemContainer.PROPERTY_NAME); tree.setItemIconPropertyId(FilesystemContainer.PROPERTY_ICON); for (Object id : tree.rootItemIds()) { tree.expandItem(id); } String projectName = "org.semanticsoft.vaaclipsedemo.cassandra.app"; File data = FileUtils.getFile(demoRoot, projectName, "data"); if (data != null) tree.expandItem(data); File rootPackage = FileUtils.getFile(demoRoot, projectName, "src"); if (rootPackage != null) tree.expandItemsRecursively(rootPackage); } public boolean isLinkWithEditor() { return linkWithEditor; } public void setLinkWithEditor(boolean linkWithEditor) { this.linkWithEditor = linkWithEditor; if (this.linkWithEditor) { if (partService.getActivePart() instanceof MInputPart) { MInputPart inputPart = (MInputPart) partService.getActivePart(); if (inputPart != null) selectTreeNode(inputPart); } eventBroker.subscribe(UIEvents.UILifeCycle.ACTIVATE, activatePartHandler); } else eventBroker.unsubscribe(activatePartHandler); } private void selectTreeNode(MInputPart inputPart) { File f = new File(inputPart.getInputURI()); File dir = f.getParentFile(); List<File> pathToParent = new ArrayList<File>(); pathToParent.add(dir); while (!dir.equals(demoRoot) && dir != null) { dir = dir.getParentFile(); pathToParent.add(dir); } Collections.reverse(pathToParent); for (File d : pathToParent) { tree.expandItem(d); } tree.select(f); } }