Java tutorial
/******************************************************************************* * Copyright (c) 2012, 2018 Pivotal Software, Inc. * 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 * https://www.eclipse.org/legal/epl-v10.html * * Contributors: * Pivotal Software, Inc. - initial API and implementation *******************************************************************************/ package com.vmware.vfabric.ide.eclipse.tcserver.internal.ui; import java.io.File; import java.text.MessageFormat; import java.util.List; import org.eclipse.core.runtime.CoreException; import org.eclipse.core.runtime.IPath; import org.eclipse.core.runtime.IProgressMonitor; import org.eclipse.core.runtime.IStatus; import org.eclipse.core.runtime.Path; import org.eclipse.core.runtime.Status; import org.eclipse.jface.dialogs.IMessageProvider; import org.eclipse.jface.layout.GridDataFactory; import org.eclipse.jst.server.tomcat.core.internal.ITomcatServer; import org.eclipse.swt.SWT; import org.eclipse.swt.events.ModifyEvent; import org.eclipse.swt.events.ModifyListener; import org.eclipse.swt.events.SelectionAdapter; import org.eclipse.swt.events.SelectionEvent; import org.eclipse.swt.layout.GridData; import org.eclipse.swt.layout.GridLayout; import org.eclipse.swt.widgets.Button; import org.eclipse.swt.widgets.Combo; import org.eclipse.swt.widgets.Composite; import org.eclipse.swt.widgets.DirectoryDialog; import org.eclipse.swt.widgets.Label; import org.eclipse.wst.server.core.IServerWorkingCopy; import org.eclipse.wst.server.core.TaskModel; import org.eclipse.wst.server.core.internal.ServerWorkingCopy; import org.eclipse.wst.server.ui.wizard.IWizardHandle; import org.eclipse.wst.server.ui.wizard.WizardFragment; import org.springsource.ide.eclipse.commons.core.StatusHandler; import com.vmware.vfabric.ide.eclipse.tcserver.internal.core.ITcRuntime; import com.vmware.vfabric.ide.eclipse.tcserver.internal.core.ITcServerConstants; import com.vmware.vfabric.ide.eclipse.tcserver.internal.core.TcServer; import com.vmware.vfabric.ide.eclipse.tcserver.internal.core.TcServerUtil; /** * @author Steffen Pingel * @author Christian Dupuis * @author Tomasz Zarna */ public class TcServer21WizardFragment extends WizardFragment { private static final String SELECT_INSTANCE_MESSAGE = "Select an instance."; public static final String INVALID_SERVER_DIR_MESSAGE = "The specified server is not valid. The .tc-runtime-instance file is missing."; public static final String SPECIFY_TC_SERVER_INSTANCE_MESSAGE = "Specify the tc Server instance."; public static final String SERVER_DOES_NOT_EXIST_MESSAGE = "The specified server does not exist."; private static final String ILNVALID_SERVER_RUNTIME_SELECTED = "Invalid Server Runtime selected: unable to determine Tomcat version of the tc Server Runtime."; private Label descriptionLabel; private Combo serverNameCombo; private Label serverNameLabel; private Button serverBrowseButton; private IServerWorkingCopy wc; private IWizardHandle wizard; private Button existingInstanceButton; private Button newInstanceButton; private TcServer21InstanceCreationFragment instanceCreationPage; private boolean creatingNewInstance; private boolean isDefaultServerName; public TcServer21WizardFragment() { this.setComplete(false); } @Override public Composite createComposite(Composite parent, IWizardHandle wizard) { this.wizard = wizard; wizard.setTitle("tc Server Configuration"); wizard.setDescription(SPECIFY_TC_SERVER_INSTANCE_MESSAGE); wizard.setImageDescriptor(TcServerImages.WIZB_SERVER); Composite composite = new Composite(parent, SWT.NONE); GridLayout layout = new GridLayout(); layout.numColumns = 3; composite.setLayout(layout); composite.setLayoutData(new GridData(GridData.FILL_BOTH)); newInstanceButton = new Button(composite, SWT.RADIO); newInstanceButton.setSelection(true); newInstanceButton.setText("Create new instance"); GridDataFactory.fillDefaults().span(3, 1).applyTo(newInstanceButton); newInstanceButton.addSelectionListener(new SelectionAdapter() { @Override public void widgetSelected(SelectionEvent e) { creatingNewInstance = newInstanceButton.getSelection(); updateChildFragments(); wc.setAttribute(ITomcatServer.PROPERTY_INSTANCE_DIR, (String) null); wc.setAttribute(TcServer.KEY_SERVER_NAME, (String) null); validate(); serverNameCombo.setEnabled(false); serverNameLabel.setEnabled(false); serverBrowseButton.setEnabled(false); } }); creatingNewInstance = true; existingInstanceButton = new Button(composite, SWT.RADIO); existingInstanceButton.setText("Existing instance"); existingInstanceButton.addSelectionListener(new SelectionAdapter() { @Override public void widgetSelected(SelectionEvent e) { updateChildFragments(); serverNameCombo.setEnabled(true); serverNameLabel.setEnabled(true); serverBrowseButton.setEnabled(true); updateInstanceNameFromWidget(); } }); GridDataFactory.fillDefaults().span(3, 1).applyTo(existingInstanceButton); serverNameLabel = new Label(composite, SWT.NONE); serverNameLabel.setText("Instance:"); GridData data = new GridData(); serverNameLabel.setLayoutData(data); serverNameCombo = new Combo(composite, SWT.BORDER); data = new GridData(GridData.FILL_HORIZONTAL); serverNameCombo.setLayoutData(data); serverNameCombo.addModifyListener(new ModifyListener() { public void modifyText(ModifyEvent e) { if (existingInstanceButton.getSelection()) { updateInstanceNameFromWidget(); } } }); serverBrowseButton = new Button(composite, SWT.PUSH); serverBrowseButton.setText("Browse..."); serverBrowseButton.setLayoutData(new GridData()); serverBrowseButton.addSelectionListener(new SelectionAdapter() { @Override public void widgetSelected(SelectionEvent event) { handleLocationBrowseButtonPressed(); validate(); } }); serverNameCombo.setEnabled(false); serverNameLabel.setEnabled(false); serverBrowseButton.setEnabled(false); Label separator = new Label(composite, SWT.NONE); GridDataFactory.fillDefaults().span(3, 1).applyTo(separator); descriptionLabel = new Label(composite, SWT.WRAP); descriptionLabel.setBackground(composite.getBackground()); GridDataFactory.fillDefaults().span(3, 1).grab(true, false).applyTo(descriptionLabel); return composite; } private void updateInstanceNameFromWidget() { IPath serverPath = new Path(serverNameCombo.getText()); if (!serverPath.isEmpty() && serverPath.isAbsolute()) { wc.setAttribute(ITomcatServer.PROPERTY_INSTANCE_DIR, serverNameCombo.getText()); wc.setAttribute(TcServer.KEY_SERVER_NAME, (String) null); } else { wc.setAttribute(ITomcatServer.PROPERTY_INSTANCE_DIR, (String) null); wc.setAttribute(TcServer.KEY_SERVER_NAME, serverNameCombo.getText()); } validate(); } private void handleLocationBrowseButtonPressed() { File path = wc.getRuntime().getLocation().toFile(); DirectoryDialog dialog = new DirectoryDialog(serverBrowseButton.getShell()); dialog.setMessage("Select location"); if (path.exists()) { dialog.setFilterPath(path.toString()); } String selectedDirectory = dialog.open(); if (selectedDirectory != null) { serverNameCombo.add(selectedDirectory, 0); serverNameCombo.select(0); } } @Override protected void createChildFragments(List<WizardFragment> list) { if (newInstanceButton != null && newInstanceButton.getSelection()) { if (instanceCreationPage == null) { instanceCreationPage = new TcServer21InstanceCreationFragment(); } list.add(instanceCreationPage); } } @Override public void enter() { this.wc = (IServerWorkingCopy) getTaskModel().getObject(TaskModel.TASK_SERVER); initialize(); updateChildFragments(); validate(); } @Override public void exit() { if (isDefaultServerName) { TcServerUtil.setTcServerDefaultName(wc); } try { // load the configuration from the directory based on the selections // made on the wizard page ((ServerWorkingCopy) wc).importRuntimeConfiguration(wc.getRuntime(), null); } catch (CoreException e) { StatusHandler.log(new Status(IStatus.ERROR, TcServerUiPlugin.PLUGIN_ID, "Failed to load runtime configuration", e)); // Trace.trace(Trace.SEVERE, "Failed to load runtime configuration", // e); } } @Override public boolean hasComposite() { return true; } private IStatus doValidate() { if (newInstanceButton != null && newInstanceButton.getSelection()) { return Status.OK_STATUS; } ServerWorkingCopy workingCopy = (ServerWorkingCopy) wc; if (workingCopy.getAttribute(TcServer.KEY_SERVER_NAME, (String) null) == null && workingCopy.getAttribute(ITomcatServer.PROPERTY_INSTANCE_DIR, (String) null) == null) { return new Status(IStatus.INFO, ITcServerConstants.PLUGIN_ID, SELECT_INSTANCE_MESSAGE); } String tomcatVersion = TcServerUtil.getServerVersion(wc.getRuntime()); if (tomcatVersion == null) { return new Status(IStatus.ERROR, ITcServerConstants.PLUGIN_ID, ILNVALID_SERVER_RUNTIME_SELECTED); } File file = TcServerUtil.getInstanceDirectory(workingCopy); if (file != null && file.exists()) { IStatus status = TcServerUtil.validateInstance(file, true); String instanceTomcatVersion = TcServerUtil.getInstanceTomcatVersion(file); if (status.isOK() && instanceTomcatVersion == null) { status = new Status(IStatus.ERROR, ITcServerConstants.PLUGIN_ID, Messages.UNKNOWN_INSTANCE_TOMCAT_VERSION); } if (status.isOK() && !tomcatVersion.equals(instanceTomcatVersion)) { status = new Status(IStatus.WARNING, ITcServerConstants.PLUGIN_ID, MessageFormat .format(Messages.TOMCAT_VERSION_MISMATCH, tomcatVersion, instanceTomcatVersion)); } return status; } return new Status(IStatus.ERROR, ITcServerConstants.PLUGIN_ID, SERVER_DOES_NOT_EXIST_MESSAGE); } private void initialize() { isDefaultServerName = wc == null || TcServerUtil.isTcServerDefaultName(wc); existingInstanceButton.setEnabled(false); if (wc != null && serverNameCombo != null) { /* * #removeAll() will clear the text from the combo, hence store it * to reset it after the choices of instance names are populated */ String previous = serverNameCombo.getText(); serverNameCombo.removeAll(); ITcRuntime tcRuntime = TcServerUtil.getTcRuntime(wc.getRuntime()); // add all directories that have a server configuration if (tcRuntime != null) { IPath instancesDirectory = tcRuntime.defaultInstancesDirectory(); File[] serverDirectories = instancesDirectory.toFile().listFiles(); if (serverDirectories != null) { for (File directory : serverDirectories) { if (directory.isDirectory() && new File(directory, ".tc-runtime-instance").exists()) { serverNameCombo.add(directory.getName()); } } } } existingInstanceButton.setEnabled(true); serverNameCombo.setText(previous); } } private void updateDescription(IStatus status) { if (status.isOK() && existingInstanceButton != null && existingInstanceButton.getSelection()) { File directory = TcServerUtil.getInstanceDirectory((ServerWorkingCopy) wc); if (directory != null) { File libDirectory = new File(directory, "lib"); if (new File(libDirectory, "catalina.jar").exists()) { descriptionLabel.setText("This instance is configured for combined layout."); } else { descriptionLabel.setText("This instance is configured for separate layout."); } return; } } descriptionLabel.setText(""); } protected void validate() { if (!newInstanceButton.getSelection() && serverNameCombo.getText().length() == 0) { wizard.setMessage(SPECIFY_TC_SERVER_INSTANCE_MESSAGE, IMessageProvider.NONE); setComplete(false); return; } if (wc == null) { wizard.setMessage("", IMessageProvider.ERROR); setComplete(false); return; } IStatus status = doValidate(); if (status == null || status.isOK()) { wizard.setMessage(null, IMessageProvider.NONE); setComplete(true); } else if (status.getSeverity() == IStatus.INFO) { wizard.setMessage(status.getMessage(), IMessageProvider.NONE); setComplete(false); } else if (status.getSeverity() == IStatus.WARNING) { wizard.setMessage(status.getMessage(), IMessageProvider.WARNING); setComplete(true); } else { wizard.setMessage(status.getMessage(), IMessageProvider.ERROR); setComplete(false); } updateDescription(status); wizard.update(); } @Override public void performFinish(IProgressMonitor monitor) throws CoreException { // reset completion status in case the wizard is re-used setComplete(false); if (creatingNewInstance) { // instance creation is handled by // TcServer21InstanceCreationFragment return; } // re-trigger import of configuration to propagate exception TcServerUtil.importRuntimeConfiguration(wc, monitor); } }