Java tutorial
/* * Licensed to the Apache Software Foundation (ASF) under one * or more contributor license agreements. See the NOTICE file * distributed with this work for additional information * regarding copyright ownership. The ASF licenses this file * to you 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 * * Unless required by applicable law or agreed to in writing, * software distributed under the License is distributed on an * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY * KIND, either express or implied. See the License for the * specific language governing permissions and limitations * under the License. * */ package org.apache.directory.studio.templateeditor.view.preferences; import java.util.Iterator; import java.util.List; import org.apache.directory.api.ldap.model.schema.ObjectClass; import org.eclipse.jface.preference.IPreferenceStore; import org.eclipse.jface.resource.JFaceResources; import org.eclipse.jface.viewers.ITableColorProvider; import org.eclipse.jface.viewers.ITableFontProvider; import org.eclipse.osgi.util.NLS; import org.eclipse.swt.graphics.Color; import org.eclipse.swt.graphics.Font; import org.eclipse.swt.graphics.Image; import org.apache.directory.studio.common.ui.CommonUIConstants; import org.apache.directory.studio.templateeditor.EntryTemplatePlugin; import org.apache.directory.studio.templateeditor.EntryTemplatePluginConstants; import org.apache.directory.studio.templateeditor.EntryTemplatePluginUtils; import org.apache.directory.studio.templateeditor.model.Template; import org.apache.directory.studio.templateeditor.view.ColumnsLabelProvider; /** * This class implements a label provider for the table viewer of * the Template Entry Editor preference page. * * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a> */ public class TemplatesLabelProvider extends ColumnsLabelProvider implements ITableFontProvider, ITableColorProvider { /** The Grey color constant */ private static final Color GREY_COLOR = CommonUIConstants.ML_GREY_COLOR; /** The templates manager */ private PreferencesTemplatesManager manager; /** The preference store */ private IPreferenceStore store; /** * Creates a new instance of TemplatesLabelProvider. */ public TemplatesLabelProvider(PreferencesTemplatesManager manager) { this.manager = manager; store = EntryTemplatePlugin.getDefault().getPreferenceStore(); } /** * {@inheritDoc} */ public Image getColumnImage(Object element, int columnIndex) { // Object class presentation if (isObjectClassPresentation()) { if (columnIndex == 0) { if (element instanceof ObjectClass) { return EntryTemplatePlugin.getDefault().getImage(EntryTemplatePluginConstants.IMG_OBJECT_CLASS); } else if (element instanceof Template) { if (manager.isEnabled((Template) element)) { return EntryTemplatePlugin.getDefault().getImage(EntryTemplatePluginConstants.IMG_TEMPLATE); } else { return EntryTemplatePlugin.getDefault() .getImage(EntryTemplatePluginConstants.IMG_TEMPLATE_DISABLED); } } } } // Template presentation else if (isTemplatePresentation()) { if (columnIndex == 0) { if (element instanceof Template) { if (manager.isEnabled((Template) element)) { return EntryTemplatePlugin.getDefault().getImage(EntryTemplatePluginConstants.IMG_TEMPLATE); } else { return EntryTemplatePlugin.getDefault() .getImage(EntryTemplatePluginConstants.IMG_TEMPLATE_DISABLED); } } } else if (columnIndex == 1) { if (element instanceof Template) { return EntryTemplatePlugin.getDefault().getImage(EntryTemplatePluginConstants.IMG_OBJECT_CLASS); } } } return null; } /** * {@inheritDoc} */ public String getColumnText(Object element, int columnIndex) { // Object class presentation if (isObjectClassPresentation()) { if (columnIndex == 0) { if (element instanceof ObjectClass) { return concatenateObjectClassNames(((ObjectClass) element).getNames()); } else if (element instanceof Template) { Template template = (Template) element; if (manager.isDefaultTemplate(template)) { return NLS.bind(Messages.getString("TemplatesLabelProvider.Default"), template.getTitle()); //$NON-NLS-1$ } else { return template.getTitle(); } } } } // Template presentation else if (isTemplatePresentation()) { if (columnIndex == 0) { if (element instanceof Template) { return ((Template) element).getTitle(); } } else if (columnIndex == 1) { if (element instanceof Template) { Template template = (Template) element; return concatenateObjectClasses(EntryTemplatePluginUtils .getObjectClassDescriptionFromDefaultSchema(template.getStructuralObjectClass()), template.getAuxiliaryObjectClasses()); } } } return ""; //$NON-NLS-1$ } /** * Indicates if the template presentation is selected. * * @return * <code>true</code> if the template presentation is selected, * <code>false</code> if not */ private boolean isTemplatePresentation() { return (store.getInt( EntryTemplatePluginConstants.PREF_TEMPLATES_PRESENTATION) == EntryTemplatePluginConstants.PREF_TEMPLATES_PRESENTATION_TEMPLATE); } /** * Indicates if the object class presentation is selected. * * @return * <code>true</code> if the object class presentation is selected, * <code>false</code> if not */ private boolean isObjectClassPresentation() { return (store.getInt( EntryTemplatePluginConstants.PREF_TEMPLATES_PRESENTATION) == EntryTemplatePluginConstants.PREF_TEMPLATES_PRESENTATION_OBJECT_CLASS); } /** * Concatenates the object classes in a single string. * * @param objectClass * the object class * @param auxiliaryObjectClasses * the list of auxiliary object class names * @return * a string containing all the object classes separated * by <code>", "</code> characters. */ private String concatenateObjectClasses(ObjectClass objectClass, List<String> auxiliaryObjectClasses) { if ((objectClass != null) && (auxiliaryObjectClasses != null)) { StringBuilder sb = new StringBuilder(); sb.append(concatenateObjectClassNames(objectClass.getNames())); if (auxiliaryObjectClasses.size() > 0) { sb.append(" <"); //$NON-NLS-1$ // Adding each auxiliary object class Iterator<String> iterator = auxiliaryObjectClasses.iterator(); while (iterator.hasNext()) { sb.append((String) iterator.next()); if (iterator.hasNext()) { sb.append(", "); //$NON-NLS-1$ } } sb.append(">"); //$NON-NLS-1$ } return sb.toString(); } return ""; //$NON-NLS-1$ } /** * Concatenates the object class names in a single string. * * @param objectClasses * the object classes * @return * a string containing all the object classes separated * by <code>", "</code> characters. */ private String concatenateObjectClassNames(List<String> names) { if ((names != null) && (names.size() > 0)) { StringBuilder sb = new StringBuilder(); Iterator<String> iterator = names.iterator(); while (iterator.hasNext()) { sb.append((String) iterator.next()); if (iterator.hasNext()) { sb.append(", "); //$NON-NLS-1$ } } return sb.toString(); } return ""; //$NON-NLS-1$ } /** * {@inheritDoc} */ public Font getFont(Object element, int columnIndex) { // Object class presentation if (isObjectClassPresentation()) { if (element instanceof Template) { if (manager.isDefaultTemplate((Template) element)) { // Get the default Bold Font return JFaceResources.getFontRegistry().getBold(JFaceResources.DEFAULT_FONT); } } } return null; } /** * {@inheritDoc} */ public Color getForeground(Object element, int columnIndex) { if (element instanceof Template) { if (!manager.isEnabled((Template) element)) { return GREY_COLOR; } } return null; } /** * {@inheritDoc} */ public Color getBackground(Object element, int columnIndex) { return null; } }