Java tutorial
/** * This file Copyright (c) 2005-2008 Aptana, Inc. This program is * dual-licensed under both the Aptana Public License and the GNU General * Public license. You may elect to use one or the other of these licenses. * * This program is distributed in the hope that it will be useful, but * AS-IS and WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, TITLE, or * NONINFRINGEMENT. Redistribution, except as permitted by whichever of * the GPL or APL you select, is prohibited. * * 1. For the GPL license (GPL), you can redistribute and/or modify this * program under the terms of the GNU General Public License, * Version 3, as published by the Free Software Foundation. You should * have received a copy of the GNU General Public License, Version 3 along * with this program; if not, write to the Free Software Foundation, Inc., 51 * Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Aptana provides a special exception to allow redistribution of this file * with certain other free and open source software ("FOSS") code and certain additional terms * pursuant to Section 7 of the GPL. You may view the exception and these * terms on the web at http://www.aptana.com/legal/gpl/. * * 2. For the Aptana Public License (APL), this program and the * accompanying materials are made available under the terms of the APL * v1.0 which accompanies this distribution, and is available at * http://www.aptana.com/legal/apl/. * * You may view the GPL, Aptana's exception and additional terms, and the * APL in the file titled license.html at the root of the corresponding * plugin containing this source file. * * Any modifications to this file must keep this entire header intact. */ package com.aptana.ide.server.ui.preferences; import java.net.InetAddress; import java.util.regex.Matcher; import java.util.regex.Pattern; import org.eclipse.core.runtime.Preferences; import org.eclipse.jface.preference.PreferencePage; import org.eclipse.jface.resource.ImageDescriptor; import org.eclipse.swt.SWT; import org.eclipse.swt.events.ModifyEvent; import org.eclipse.swt.events.ModifyListener; import org.eclipse.swt.layout.GridData; import org.eclipse.swt.layout.GridLayout; import org.eclipse.swt.widgets.Combo; import org.eclipse.swt.widgets.Composite; import org.eclipse.swt.widgets.Control; import org.eclipse.swt.widgets.Group; import org.eclipse.swt.widgets.Label; import org.eclipse.swt.widgets.Text; import org.eclipse.ui.IWorkbench; import org.eclipse.ui.IWorkbenchPreferencePage; import com.aptana.ide.core.SocketUtil; import com.aptana.ide.core.StringUtils; import com.aptana.ide.server.core.IHttpLaunchConfigurationConstants; import com.aptana.ide.server.core.ServerCorePlugin; /** * @author Max Stepanov * */ public class HTTPServerPreferencePage extends PreferencePage implements IWorkbenchPreferencePage { private static final Pattern PORTS_PATTERN = Pattern.compile("^(\\d+)(-(\\d+))?$"); //$NON-NLS-1$ private Preferences store; private Combo address; private Text ports; /** * */ public HTTPServerPreferencePage() { super(); store = getPreferences(); } /** * @param title */ public HTTPServerPreferencePage(String title) { super(title); store = getPreferences(); } /** * @param title * @param image */ public HTTPServerPreferencePage(String title, ImageDescriptor image) { super(title, image); store = getPreferences(); } /* (non-Javadoc) * @see org.eclipse.jface.preference.PreferencePage#createContents(org.eclipse.swt.widgets.Composite) */ protected Control createContents(Composite parent) { Composite composite = new Composite(parent, SWT.NULL); composite.setFont(parent.getFont()); composite.setLayout(new GridLayout()); composite.setLayoutData(new GridData(GridData.FILL_HORIZONTAL)); Group group = new Group(composite, SWT.NONE); group.setText(Messages.HTTPServerPreferencePage_BuiltinHTTPServer); group.setLayoutData(new GridData(GridData.FILL_HORIZONTAL)); group.setLayout(new GridLayout(2, false)); Label label = new Label(group, SWT.NONE); label.setText(Messages.HTTPServerPreferencePage_IPAddress); label.setLayoutData(new GridData(SWT.RIGHT, SWT.CENTER, false, false)); address = new Combo(group, SWT.READ_ONLY); GridData data = new GridData(SWT.LEFT, SWT.CENTER, false, false); data.widthHint = 140; address.setLayoutData(data); InetAddress[] addresses = SocketUtil.getLocalAddresses(); for (int i = 0; i < addresses.length; ++i) { address.add(addresses[i].getHostAddress()); } label = new Label(group, SWT.NONE); label.setText(Messages.HTTPServerPreferencePage_PortsLabel); label.setLayoutData(new GridData(SWT.RIGHT, SWT.CENTER, false, false)); ports = new Text(group, SWT.BORDER); data = new GridData(SWT.LEFT, SWT.CENTER, false, false); data.widthHint = 100; ports.setLayoutData(data); ports.addModifyListener(new ModifyListener() { public void modifyText(ModifyEvent e) { String message = Messages.HTTPServerPreferencePage_EnterValidPort; Matcher matcher = PORTS_PATTERN.matcher(((Text) e.widget).getText()); if (matcher.matches()) { try { int start = Integer.parseInt(matcher.group(1)); if (matcher.group(2) != null) { int end = Integer.parseInt(matcher.group(3)); if (start < end) { message = null; } } else { message = null; } } catch (NumberFormatException e1) { } } setErrorMessage(message); setValid(message == null); } }); setInitialValues(); return composite; } /* (non-Javadoc) * @see org.eclipse.ui.IWorkbenchPreferencePage#init(org.eclipse.ui.IWorkbench) */ public void init(IWorkbench workbench) { } /** * getPreferences * * @return Preferences */ protected Preferences getPreferences() { return ServerCorePlugin.getDefault().getPluginPreferences(); } /* (non-Javadoc) * @see org.eclipse.jface.preference.PreferencePage#performDefaults() */ protected void performDefaults() { setDefaultValues(); } /* (non-Javadoc) * @see org.eclipse.jface.preference.PreferencePage#performOk() */ public boolean performOk() { setValues(); return super.performOk(); } private void setAddressValue(String value) { String[] items = address.getItems(); address.deselectAll(); for (int i = 0; i < items.length; ++i) { if (items[i].equals(value)) { address.select(i); break; } } } private void setInitialValues() { setAddressValue(store.getString(IHttpLaunchConfigurationConstants.PREF_HTTP_SERVER_ADDRESS)); ports.setText(store.getString(IHttpLaunchConfigurationConstants.PREF_HTTP_SERVER_PORTS)); } private void setDefaultValues() { setAddressValue(store.getDefaultString(IHttpLaunchConfigurationConstants.PREF_HTTP_SERVER_ADDRESS)); ports.setText(store.getDefaultString(IHttpLaunchConfigurationConstants.PREF_HTTP_SERVER_PORTS)); } private void setValues() { String addr = StringUtils.EMPTY; if (address.getSelectionIndex() >= 0) { addr = address.getItem(address.getSelectionIndex()); } store.setValue(IHttpLaunchConfigurationConstants.PREF_HTTP_SERVER_ADDRESS, addr); store.setValue(IHttpLaunchConfigurationConstants.PREF_HTTP_SERVER_PORTS, ports.getText()); ServerCorePlugin.getDefault().savePluginPreferences(); } }