Java tutorial
/******************************************************************************* * Copyright (c) 2006-2010 eBay Inc. All Rights Reserved. * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 *******************************************************************************/ /** * */ package org.ebayopensource.turmeric.eclipse.ui.components; import java.util.Collection; import java.util.Collections; import org.ebayopensource.turmeric.eclipse.core.logging.SOALogger; import org.ebayopensource.turmeric.eclipse.core.resources.constants.SOAProjectConstants; import org.ebayopensource.turmeric.eclipse.resources.model.AssetInfo; import org.ebayopensource.turmeric.eclipse.resources.util.SOAConsumerUtil.EnvironmentItem; import org.eclipse.core.runtime.Assert; import org.eclipse.jface.viewers.AbstractTreeViewer; import org.eclipse.jface.viewers.ColumnWeightData; import org.eclipse.jface.viewers.ILabelProviderListener; import org.eclipse.jface.viewers.ITableLabelProvider; import org.eclipse.jface.viewers.ITreeContentProvider; import org.eclipse.jface.viewers.TableLayout; import org.eclipse.jface.viewers.TreeViewer; import org.eclipse.jface.viewers.Viewer; import org.eclipse.swt.SWT; import org.eclipse.swt.graphics.Image; import org.eclipse.swt.layout.GridData; import org.eclipse.swt.layout.GridLayout; import org.eclipse.swt.widgets.Composite; import org.eclipse.swt.widgets.Tree; import org.eclipse.swt.widgets.TreeColumn; /** * The Class SOAConsumerServicesViewer. * * @author yayu * @since 1.0.0 */ public class SOAConsumerServicesViewer extends TreeViewer { private static final SOALogger logger = SOALogger.getLogger(); private boolean useAssetInfo = true; private boolean isZeroConfig = false; /** * Instantiates a new sOA consumer services viewer. * * @param parent the parent */ public SOAConsumerServicesViewer(Composite parent) { this(parent, true); } /** * Instantiates a new sOA consumer services viewer. * * @param parent the parent * @param useAssetInfo the use asset info */ public SOAConsumerServicesViewer(Composite parent, boolean useAssetInfo) { this(parent, useAssetInfo, false); } /** * Instantiates a new sOA consumer services viewer. * * @param parent the parent * @param useAssetInfo the use asset info * @param isZeroConfig whether is zero configured */ public SOAConsumerServicesViewer(Composite parent, boolean useAssetInfo, boolean isZeroConfig) { super(parent, SWT.BORDER | SWT.SINGLE | SWT.V_SCROLL | SWT.H_SCROLL | SWT.FULL_SELECTION); this.useAssetInfo = useAssetInfo; this.isZeroConfig = isZeroConfig; init(); } public boolean isZeroConfig() { return isZeroConfig; } public void setZeroConfig(boolean isZeroConfig) { this.isZeroConfig = isZeroConfig; } /** * Adds the content provider. */ protected void addContentProvider() { setContentProvider(new ITreeContentProvider() { public Object[] getChildren(Object parentElement) { return getElements(parentElement); } @Override public Object getParent(Object element) { return null; } @Override public boolean hasChildren(Object element) { return element instanceof EnvironmentItem; } @Override public Object[] getElements(Object inputElement) { if (inputElement instanceof Collection<?>) { Collection<?> data = (Collection<?>) inputElement; if (isZeroConfig && data.isEmpty() == false) { Object obj = data.iterator().next(); if (obj instanceof EnvironmentItem) { return useAssetInfo ? ((EnvironmentItem) obj).getServiceData().values().toArray() : ((EnvironmentItem) obj).getServices().toArray(); } } return ((Collection<?>) inputElement).toArray(); } else if (inputElement instanceof EnvironmentItem) { return useAssetInfo ? ((EnvironmentItem) inputElement).getServiceData().values().toArray() : ((EnvironmentItem) inputElement).getServices().toArray(); } return Collections.EMPTY_LIST.toArray(); } @Override public void dispose() { } @Override public void inputChanged(Viewer viewer, Object oldInput, Object newInput) { } }); } /** * Adds the label provider. */ protected void addLabelProvider() { setLabelProvider(new ITableLabelProvider() { @Override public Image getColumnImage(Object element, int columnIndex) { return null; } @Override public String getColumnText(Object element, int columnIndex) { if (isZeroConfig == false) { if (element instanceof AssetInfo) { if (columnIndex == 1) return ((AssetInfo) element).getDescription(); } else if (element instanceof String) { if (columnIndex == 1) return element.toString(); } else if (element instanceof EnvironmentItem) { final EnvironmentItem info = (EnvironmentItem) element; if (columnIndex == 0) { return info.getName(); } } } else { if (element instanceof AssetInfo) { if (columnIndex == 0) return ((AssetInfo) element).getDescription(); } else if (element instanceof String) { if (columnIndex == 0) return element.toString(); } } return SOAProjectConstants.EMPTY_STRING; } @Override public void addListener(ILabelProviderListener listener) { } @Override public void dispose() { } @Override public boolean isLabelProperty(Object element, String property) { return false; } @Override public void removeListener(ILabelProviderListener listener) { } }); } /** * Inits the. */ protected void init() { setAutoExpandLevel(AbstractTreeViewer.ALL_LEVELS); addContentProvider(); addLabelProvider(); createColumns(); } /** * Creates the columns. */ protected void createColumns() { final Tree tree = getTree(); Assert.isTrue(tree.getParent().getLayout() instanceof GridLayout, "The SOA Consumer Services Viewer must be put in a composite that is using GridLayout."); tree.setLayoutData(new GridData(GridData.FILL_BOTH)); tree.setHeaderVisible(true); tree.setLinesVisible(true); final TableLayout layout = new TableLayout(); if (isZeroConfig == false) { layout.addColumnData(new ColumnWeightData(40, 100, true)); } layout.addColumnData(new ColumnWeightData(60, 150, true)); tree.setLayout(layout); TreeColumn column = new TreeColumn(tree, SWT.LEFT); if (isZeroConfig == false) { column.setText("Environment"); column = new TreeColumn(tree, SWT.LEFT); } column.setText("Admin Name"); } }