Java tutorial
/******************************************************************************* * Copyright (c) 2003, 2008 IBM Corporation 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: * IBM Corporation - Initial API and implementation *******************************************************************************/ package org.eclipse.wst.server.ui.internal.wizard.page; import java.util.ArrayList; import java.util.List; import org.eclipse.jface.dialogs.Dialog; import org.eclipse.jface.resource.JFaceResources; import org.eclipse.jface.viewers.*; import org.eclipse.wst.server.core.IServer; import org.eclipse.wst.server.core.IServerAttributes; import org.eclipse.wst.server.core.IServerWorkingCopy; import org.eclipse.wst.server.ui.internal.SWTUtil; import org.eclipse.wst.server.ui.internal.viewers.BaseContentProvider; import org.eclipse.swt.SWT; import org.eclipse.swt.events.SelectionAdapter; import org.eclipse.swt.events.SelectionEvent; import org.eclipse.swt.graphics.Image; import org.eclipse.swt.layout.GridData; import org.eclipse.swt.layout.GridLayout; import org.eclipse.swt.widgets.Button; import org.eclipse.swt.widgets.Composite; import org.eclipse.swt.widgets.Label; import org.eclipse.swt.widgets.Table; import org.eclipse.swt.widgets.TableColumn; /** * A wizard page used to detect a server. */ public class NewDetectServerComposite extends Composite { protected String host; protected IServerWorkingCopy server; protected IServerSelectionListener listener; protected List servers = new ArrayList(); protected Button detect; protected Table table; protected TableViewer tableViewer; protected Label hostLabel; public interface IServerSelectionListener { public void serverSelected(IServerAttributes server); } public class ServerContentProvider extends BaseContentProvider { public Object[] getElements(Object inputElement) { return servers.toArray(); } } public class ServerLabelProvider implements ITableLabelProvider { public void addListener(ILabelProviderListener listener2) { // do nothing } public void dispose() { // do nothing } public Image getColumnImage(Object element, int columnIndex) { return null; } public String getColumnText(Object element, int columnIndex) { IServer server2 = (IServer) element; if (columnIndex == 0) return server2.getName(); else if (columnIndex == 0) return "n/a"; return null; } public boolean isLabelProperty(Object element, String property) { return false; } public void removeListener(ILabelProviderListener listener2) { // do nothing } } /** * Create a new NewDetectServerComposite. * * @param parent a parent composite * @param listener2 a server selection listener */ public NewDetectServerComposite(Composite parent, IServerSelectionListener listener2) { super(parent, SWT.NONE); this.listener = listener2; createControl(); } protected Label createHeadingLabel(Composite parent, String text, int span) { Label label = createLabel(parent, text, span, true, false); label.setFont(JFaceResources.getBannerFont()); return label; } protected Label createLabel(Composite parent, String text, int span, boolean alignTop, boolean indent) { Label label = new Label(parent, SWT.WRAP); label.setText(text); GridData data = new GridData(GridData.HORIZONTAL_ALIGN_FILL | GridData.VERTICAL_ALIGN_CENTER); if (alignTop) data.verticalAlignment = GridData.BEGINNING; data.horizontalSpan = span; if (indent) data.horizontalIndent = 10; label.setLayoutData(data); return label; } /** * Creates the UI of the page. */ protected void createControl() { GridLayout layout = new GridLayout(); layout.horizontalSpacing = SWTUtil.convertHorizontalDLUsToPixels(this, 4); layout.verticalSpacing = SWTUtil.convertVerticalDLUsToPixels(this, 4); layout.marginWidth = 0; layout.marginHeight = 0; layout.numColumns = 2; setLayout(layout); //WorkbenchHelp.setHelp(this, ContextIds.SELECT_CLIENT_WIZARD); createHeadingLabel(this, "Select the Server", 2); table = new Table(this, SWT.BORDER | SWT.FULL_SELECTION | SWT.V_SCROLL | SWT.H_SCROLL | SWT.SINGLE); GridData data = new GridData(GridData.FILL_HORIZONTAL | GridData.FILL_VERTICAL); data.heightHint = 60; data.widthHint = 50; data.horizontalSpan = 2; data.horizontalIndent = 10; table.setLayoutData(data); TableLayout tableLayout = new TableLayout(); table.setHeaderVisible(true); tableLayout.addColumnData(new ColumnWeightData(50, 100, true)); TableColumn col = new TableColumn(table, SWT.NONE); col.setText("Server"); tableLayout.addColumnData(new ColumnWeightData(40, 80, true)); TableColumn col2 = new TableColumn(table, SWT.NONE); col2.setText("Status"); table.setLayout(tableLayout); tableViewer = new TableViewer(table); tableViewer.setContentProvider(new ServerContentProvider()); tableViewer.setLabelProvider(new ServerLabelProvider()); tableViewer.setColumnProperties(new String[] { "name", "status" }); tableViewer.setInput("root"); String date = "<now>"; hostLabel = createLabel(this, "Last detected servers on " + host + " at " + date + ":", 1, false, true); detect = SWTUtil.createButton(this, "Refresh"); detect.setEnabled(false); data = (GridData) detect.getLayoutData(); data.horizontalAlignment = GridData.HORIZONTAL_ALIGN_END; // listeners detect.addSelectionListener(new SelectionAdapter() { public void widgetSelected(SelectionEvent e) { // do nothing } }); tableViewer.addSelectionChangedListener(new ISelectionChangedListener() { public void selectionChanged(SelectionChangedEvent event) { IStructuredSelection sel = (IStructuredSelection) event.getSelection(); Object obj = sel.getFirstElement(); IServerWorkingCopy newServer = null; if (obj instanceof IServerWorkingCopy) newServer = (IServerWorkingCopy) obj; if ((newServer == null && server != null) || (newServer != null && !newServer.equals(server))) { server = newServer; listener.serverSelected(server); } } }); setHost(null); Dialog.applyDialogFont(this); } public String getHost() { return host; } public void setHost(String host) { this.host = host; servers = new ArrayList(); tableViewer.refresh(); if (host != null) { hostLabel.setText("Detected servers on " + host + ":"); detect.setEnabled(true); table.setEnabled(true); } else { hostLabel.setText("No host selected"); detect.setEnabled(false); table.setEnabled(false); } } public IServerWorkingCopy getServer() { return server; } }