Java tutorial
/** * Copyright (c) 2011, 2012 Gunnar Wagenknecht 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: * Gunnar Wagenknecht - initial API and implementation * Andreas Mihm - rework new admin ui */ package org.eclipse.gyrex.admin.ui.http.jetty.internal; import java.util.ArrayList; import java.util.Collection; import java.util.List; import org.eclipse.gyrex.admin.ui.internal.application.AdminUiUtil; import org.eclipse.gyrex.admin.ui.internal.widgets.Infobox; import org.eclipse.gyrex.admin.ui.internal.widgets.NonBlockingStatusDialog; import org.eclipse.gyrex.admin.ui.internal.wizards.dialogfields.DialogField; import org.eclipse.gyrex.admin.ui.internal.wizards.dialogfields.IDialogFieldListener; import org.eclipse.gyrex.admin.ui.internal.wizards.dialogfields.LayoutUtil; import org.eclipse.gyrex.admin.ui.internal.wizards.dialogfields.SelectionButtonDialogField; import org.eclipse.gyrex.admin.ui.internal.wizards.dialogfields.Separator; import org.eclipse.gyrex.admin.ui.internal.wizards.dialogfields.StringDialogField; import org.eclipse.gyrex.common.identifiers.IdHelper; import org.eclipse.gyrex.http.jetty.admin.ChannelDescriptor; import org.eclipse.gyrex.http.jetty.admin.ICertificate; import org.eclipse.gyrex.http.jetty.admin.IJettyManager; import org.eclipse.core.runtime.IStatus; import org.eclipse.core.runtime.Status; import org.eclipse.jface.fieldassist.ContentProposal; import org.eclipse.jface.fieldassist.IContentProposal; import org.eclipse.jface.fieldassist.IContentProposalProvider; import org.eclipse.swt.SWT; import org.eclipse.swt.layout.GridData; import org.eclipse.swt.layout.GridLayout; import org.eclipse.swt.widgets.Composite; import org.eclipse.swt.widgets.Control; import org.eclipse.swt.widgets.Shell; import org.osgi.framework.FrameworkUtil; import org.osgi.framework.InvalidSyntaxException; import org.apache.commons.lang.StringUtils; import org.apache.commons.lang.math.NumberUtils; public class AddChannelDialog extends NonBlockingStatusDialog { /** serialVersionUID */ private static final long serialVersionUID = 1L; private final StringDialogField idField = new StringDialogField(); private final StringDialogField portField = new StringDialogField(); private final SelectionButtonDialogField secureField = new SelectionButtonDialogField(SWT.CHECK); private final StringDialogField certificateIdField = new StringDialogField(); private final StringDialogField secureChannelIdField = new StringDialogField(); private final StringDialogField nodeFilterField = new StringDialogField(); private final IJettyManager jettyManager; /** * Creates a new instance. * * @param parent */ public AddChannelDialog(final Shell parent, final IJettyManager jettyManager) { super(parent); this.jettyManager = jettyManager; setTitle("New Connector"); setShellStyle(SWT.DIALOG_TRIM | SWT.RESIZE | SWT.APPLICATION_MODAL); } @Override protected Control createDialogArea(final Composite parent) { final Composite composite = (Composite) super.createDialogArea(parent); final GridData gd = (GridData) composite.getLayoutData(); gd.minimumHeight = convertVerticalDLUsToPixels(200); gd.minimumWidth = convertHorizontalDLUsToPixels(400); gd.widthHint = convertHorizontalDLUsToPixels(400); idField.setLabelText("Id"); portField.setLabelText("Port"); secureField.setLabelText("SSL"); certificateIdField.setLabelText("Certificate"); secureChannelIdField.setLabelText("Secure Connector"); nodeFilterField.setLabelText("Node Filter"); final IDialogFieldListener validateListener = new IDialogFieldListener() { @Override public void dialogFieldChanged(final DialogField field) { validate(); } }; idField.setDialogFieldListener(validateListener); portField.setDialogFieldListener(validateListener); secureField.setDialogFieldListener(validateListener); certificateIdField.setDialogFieldListener(validateListener); secureChannelIdField.setDialogFieldListener(validateListener); nodeFilterField.setDialogFieldListener(validateListener); certificateIdField.setContentProposalProcessor(new IContentProposalProvider() { /** serialVersionUID */ private static final long serialVersionUID = 1L; @Override public IContentProposal[] getProposals(final String contents, final int position) { final List<IContentProposal> resultList = new ArrayList<IContentProposal>(); final String patternString = StringUtils.trimToNull(StringUtils.substring(contents, 0, position)); final Collection<ICertificate> certificates = jettyManager.getCertificates(); for (final ICertificate certificate : certificates) { if ((null == patternString) || StringUtils.contains(certificate.getId(), patternString)) { resultList.add(new ContentProposal(certificate.getId(), certificate.getInfo())); } } return resultList.toArray(new IContentProposal[resultList.size()]); } }); secureChannelIdField.setContentProposalProcessor(new IContentProposalProvider() { /** serialVersionUID */ private static final long serialVersionUID = 1L; @Override public IContentProposal[] getProposals(final String contents, final int position) { final List<IContentProposal> resultList = new ArrayList<IContentProposal>(); final String patternString = StringUtils.trimToNull(StringUtils.substring(contents, 0, position)); final Collection<ChannelDescriptor> channels = jettyManager.getChannels(); for (final ChannelDescriptor channel : channels) { if (channel.isSecure() && ((null == patternString) || StringUtils.contains(channel.getId(), patternString))) { resultList.add(new ContentProposal(channel.getId(), String.format("%s (%s)", channel.getId(), channel.toString()))); } } return resultList.toArray(new IContentProposal[resultList.size()]); } }); secureField.setAttachedDialogFields(certificateIdField); final Infobox infobox = new Infobox(composite); infobox.setLayoutData(AdminUiUtil.createHorzFillData()); infobox.addHeading("Create a new connector!"); infobox.addParagraph( "Please fill in id and port to create a connector!\nIf the connector should support encryption, please choose the certificate to be used. You need some more documentation on the usage of the fields SecureConnector and nodefilter."); LayoutUtil.doDefaultLayout(composite, new DialogField[] { new Separator(), idField, portField, new Separator(), secureField, certificateIdField, new Separator(), secureChannelIdField, new Separator(), nodeFilterField }, false); LayoutUtil.setHorizontalGrabbing(idField.getTextControl(null)); final GridLayout masterLayout = (GridLayout) composite.getLayout(); masterLayout.marginWidth = 5; masterLayout.marginHeight = 5; LayoutUtil.setHorizontalSpan(infobox, masterLayout.numColumns); return composite; } private boolean isWithinRange(final int port, final int lower, final int higher) { return (port >= lower) && (port <= higher); } @Override protected void okPressed() { validate(); if (!getStatus().isOK()) return; try { final ChannelDescriptor channelDescriptor = new ChannelDescriptor(); channelDescriptor.setId(idField.getText()); channelDescriptor.setPort(NumberUtils.toInt(portField.getText())); channelDescriptor.setSecure(secureField.isSelected()); channelDescriptor.setCertificateId(StringUtils.trimToNull(certificateIdField.getText())); channelDescriptor.setSecureChannelId(StringUtils.trimToNull(secureChannelIdField.getText())); channelDescriptor.setNodeFilter(StringUtils.trimToNull(nodeFilterField.getText())); jettyManager.saveChannel(channelDescriptor); } catch (final Exception e) { setError(e.getMessage()); return; } super.okPressed(); } private void setError(final String message) { updateStatus(new Status(IStatus.ERROR, JettyConfigActivator.SYMBOLIC_NAME, message)); getShell().pack(true); } private void setInfo(final String message) { updateStatus(new Status(IStatus.INFO, JettyConfigActivator.SYMBOLIC_NAME, message)); } private void setWarning(final String message) { updateStatus(new Status(IStatus.WARNING, JettyConfigActivator.SYMBOLIC_NAME, message)); } void validate() { final String id = idField.getText(); if (StringUtils.isNotBlank(id) && !IdHelper.isValidId(id)) { setError( "The entered connector id is invalid. It may only contain ASCII chars a-z, 0-9, '.', '-' and/or '_'."); return; } final String port = portField.getText(); if (StringUtils.isNotBlank(port)) { if (!NumberUtils.isDigits(port)) { setError("The entered port is invalid. Please use only digits."); return; } if (!isWithinRange(NumberUtils.toInt(port), 1, 65535)) { setError("The entered port is invalid. Port must be within 1 and 65535."); return; } } final boolean secure = secureField.isSelected(); final String certificateId = certificateIdField.getText(); final String secureChannelId = secureChannelIdField.getText(); if (secure && StringUtils.isNotBlank(certificateId)) { if (!IdHelper.isValidId(certificateId)) { setError( "The entered certificate id is invalid. It may only contain ASCII chars a-z, 0-9, '.', '-' and/or '_'."); return; } final ICertificate certificate = jettyManager.getCertificate(certificateId); if (certificate == null) { setError("The entered certificate id is unknown."); return; } } else if (!secure && StringUtils.isNotBlank(secureChannelId)) { if (!IdHelper.isValidId(secureChannelId)) { setError( "The entered secure connector id is invalid. It may only contain ASCII chars a-z, 0-9, '.', '-' and/or '_'."); return; } final ChannelDescriptor channel = jettyManager.getChannel(secureChannelId); if (channel == null) { setError("The entered secure connector is unknown."); return; } if (channel.isSecure()) { setError("The entered secure connector is not a SSL connector."); return; } } final String nodeFilter = nodeFilterField.getText(); if (StringUtils.isNotBlank(nodeFilter)) { try { FrameworkUtil.createFilter(nodeFilter); } catch (final InvalidSyntaxException e) { setError("The entered node filter is invalid. Please use valid LDAP filter syntax. " + e.getMessage()); return; } } if (StringUtils.isBlank(id)) { setInfo("Please enter a connector id."); return; } if (StringUtils.isBlank(port)) { setInfo("Please enter a port."); return; } if (secure && StringUtils.isBlank(certificateId)) { setInfo("Please enter a certificate id."); return; } if (isWithinRange(NumberUtils.toInt(port), 1, 1024)) { setWarning("Ports within 1 and 1024 may require special system privileges."); return; } updateStatus(Status.OK_STATUS); } }