plugins/org.eclipse.sphinx.xtendxpand.ui/src/org/eclipse/sphinx/xtendxpand/ui/groups/TemplateGroup.java - sphinx/org.eclipse.sphinx - Git at Google

 /**
  * <copyright>
  *
  * Copyright (c) 2011 See4sys, itemis and others.
  * All rights reserved. This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License v2.0
  * which accompanies this distribution, and is available at
  * https://www.eclipse.org/org/documents/epl-2.0/EPL-2.0.html
  *
  * Contributors:
  *     See4sys - Initial API and implementation
  *     itemis - [343844] Enable multiple Xtend MetaModels to be configured on BasicM2xAction, M2xConfigurationWizard, and Xtend/Xpand/CheckJob
  *     itemis - [357813] Risk of NullPointerException when transforming models using M2MConfigurationWizard
  *
  * </copyright>
  */
 package org.eclipse.sphinx.xtendxpand.ui.groups;

 import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.Collection;
 import java.util.List;

 import org.eclipse.core.resources.IFile;
 import org.eclipse.core.resources.IResource;
 import org.eclipse.core.resources.ResourcesPlugin;
 import org.eclipse.core.runtime.Assert;
 import org.eclipse.core.runtime.IStatus;
 import org.eclipse.core.runtime.Path;
 import org.eclipse.core.runtime.Status;
 import org.eclipse.emf.ecore.EObject;
 import org.eclipse.internal.xpand2.ast.AbstractDefinition;
 import org.eclipse.internal.xpand2.ast.Template;
 import org.eclipse.jface.dialogs.DialogSettings;
 import org.eclipse.jface.dialogs.IDialogConstants;
 import org.eclipse.jface.dialogs.IDialogSettings;
 import org.eclipse.jface.viewers.Viewer;
 import org.eclipse.jface.viewers.ViewerFilter;
 import org.eclipse.sphinx.emf.mwe.IXtendXpandConstants;
 import org.eclipse.sphinx.emf.util.EcorePlatformUtil;
 import org.eclipse.sphinx.emf.util.EcoreResourceUtil;
 import org.eclipse.sphinx.platform.ui.fields.ComboField;
 import org.eclipse.sphinx.platform.ui.fields.IField;
 import org.eclipse.sphinx.platform.ui.fields.IFieldListener;
 import org.eclipse.sphinx.platform.ui.fields.StringButtonField;
 import org.eclipse.sphinx.platform.ui.fields.StringField;
 import org.eclipse.sphinx.platform.ui.fields.adapters.IButtonAdapter;
 import org.eclipse.sphinx.platform.ui.groups.AbstractGroup;
 import org.eclipse.sphinx.platform.util.ExtendedPlatform;
 import org.eclipse.sphinx.xtendxpand.XpandEvaluationRequest;
 import org.eclipse.sphinx.xtendxpand.ui.internal.Activator;
 import org.eclipse.sphinx.xtendxpand.ui.internal.messages.Messages;
 import org.eclipse.sphinx.xtendxpand.util.XtendXpandUtil;
 import org.eclipse.swt.layout.GridLayout;
 import org.eclipse.swt.widgets.Composite;
 import org.eclipse.ui.dialogs.ElementTreeSelectionDialog;
 import org.eclipse.ui.dialogs.ISelectionStatusValidator;
 import org.eclipse.ui.model.WorkbenchContentProvider;
 import org.eclipse.ui.model.WorkbenchLabelProvider;
 import org.eclipse.ui.views.navigator.ResourceComparator;
 import org.eclipse.xtend.expression.TypeSystem;
 import org.eclipse.xtend.shared.ui.core.IXtendXpandProject;
 import org.eclipse.xtend.shared.ui.core.IXtendXpandResource;
 import org.eclipse.xtend.typesystem.Type;

 public class TemplateGroup extends AbstractGroup {

 	/**
 	 * The template group dialog settings.
 	 */
 	protected static final String CODE_GEN_SECTION = Activator.getPlugin().getSymbolicName() + ".CODE_GEN_SECTION"; //$NON-NLS-1$
 	protected static final String STORE_TEMPLATE_FILE = "TEMPLATE_FILE$"; //$NON-NLS-1$
 	protected static final String STORE_SELECTED_DEFINITION = "SELECTED_DEFINITION"; //$NON-NLS-1$

 	/**
 	 * The template file field.
 	 */
 	protected StringButtonField templateFileField;

 	/**
 	 * The definition field.
 	 */
 	protected ComboField definitionField;

 	/**
 	 * The definition name field.
 	 */
 	protected StringField definitionNameField;

 	/**
 	 * The selected model object.
 	 */
 	protected EObject modelObject;

 	/**
 	 * The {@link TypeSystem type system} to be used.
 	 */
 	protected TypeSystem typeSystem;

 	/**
 	 * Defined definitions in the template file.
 	 */
 	private List<AbstractDefinition> definitions;

 	public TemplateGroup(String groupName, EObject modelObject, TypeSystem typeSystem) {
 		this(groupName, modelObject, typeSystem, null);
 	}

 	public TemplateGroup(String groupName, EObject modelObject, TypeSystem typeSystem, IDialogSettings dialogSettings) {
 		super(groupName, dialogSettings);

 		Assert.isNotNull(typeSystem);

 		this.modelObject = modelObject;
 		this.typeSystem = typeSystem;
 	}

 	@Override
 	protected void doCreateContent(final Composite parent, int numColumns) {
 		parent.setLayout(new GridLayout(numColumns, false));

 		// Template file field
 		templateFileField = new StringButtonField(new IButtonAdapter() {

 			@Override
 			public void changeControlPressed(IField field) {
 				ElementTreeSelectionDialog dialog = new ElementTreeSelectionDialog(parent.getShell(), new WorkbenchLabelProvider(),
 						new WorkbenchContentProvider());
 				dialog.setTitle(Messages.label_templateSelection);
 				dialog.setMessage(Messages.msg_chooseTemplate);
 				dialog.setInput(ResourcesPlugin.getWorkspace().getRoot());
 				IFile modelFile = EcorePlatformUtil.getFile(modelObject);
 				if (modelFile != null) {
 					dialog.setInitialSelection(modelFile.getProject());
 				}
 				dialog.setComparator(new ResourceComparator(ResourceComparator.NAME));
 				dialog.addFilter(new ViewerFilter() {

 					@Override
 					public boolean select(Viewer viewer, Object parentElement, Object element) {
 						if (element instanceof IFile) {
 							return IXtendXpandConstants.TEMPLATE_EXTENSION.equals(((IFile) element).getFileExtension());
 						}
 						if (element instanceof IResource) {
 							return !ExtendedPlatform.isPlatformPrivateResource((IResource) element);
 						}
 						return true;
 					}
 				});
 				dialog.setValidator(new ISelectionStatusValidator() {

 					@Override
 					public IStatus validate(Object[] selection) {
 						int nSelected = selection.length;
 						String pluginId = Activator.getPlugin().getSymbolicName();
 						if (nSelected == 1 && selection[0] instanceof IFile) {
 							IFile selectedFile = (IFile) selection[0];
 							if (selectedFile.exists() && IXtendXpandConstants.TEMPLATE_EXTENSION.equals(selectedFile.getFileExtension())) {
 								return Status.OK_STATUS;
 							}
 						}
 						return new Status(IStatus.ERROR, pluginId, IStatus.ERROR, Messages.msg_chooseTemplateError, null);
 					}
 				});
 				if (dialog.open() == IDialogConstants.OK_ID) {
 					IFile file = (IFile) dialog.getFirstResult();
 					if (file != null) {
 						templateFileField.setText(file.getFullPath().makeRelative().toString());
 						updateDefinitionFieldItems(file);
 					}
 				}
 			}
 		});
 		templateFileField.setButtonLabel(Messages.label_browse);
 		templateFileField.setLabelText(Messages.label_templateFile);
 		templateFileField.fillIntoGrid(parent, numColumns);
 		templateFileField.addFieldListener(new IFieldListener() {

 			@Override
 			public void dialogFieldChanged(IField field) {
 				updateDefinitionFieldItems(getFile(templateFileField.getText()));
 				updateDefinitionNameField();
 				notifyGroupChanged(templateFileField);
 			}
 		});

 		// Define block field
 		definitionField = new ComboField(true);
 		definitionField.setLabelText(Messages.label_definition);
 		definitionField.fillIntoGrid(parent, numColumns);
 		definitionField.addFieldListener(new IFieldListener() {

 			@Override
 			public void dialogFieldChanged(IField field) {
 				updateDefinitionNameField();
 				notifyGroupChanged(templateFileField);
 			}
 		});

 		// Definition name field
 		definitionNameField = new StringField();
 		definitionNameField.setLabelText(Messages.label_definitionName);
 		definitionNameField.setEditable(false);
 		definitionNameField.fillIntoGrid(parent, numColumns);
 	}

 	/**
 	 * Updates items of define block field after loading selected template file.
 	 */
 	public void updateDefinitionFieldItems(IFile templateFile) {
 		Template template = loadTemplate(templateFile);
 		if (template != null) {
 			definitions = Arrays.asList(template.getAllDefinitions());
 			definitionField.setItems(createDefinitionFieldItems(definitions));
 			return;
 		}
 		definitionField.setItems(new String[0]);
 	}

 	/**
 	 * Creates define block items.
 	 */
 	protected String[] createDefinitionFieldItems(List<AbstractDefinition> definitions) {
 		List<String> result = new ArrayList<String>();
 		Type type = typeSystem.getType(modelObject);
 		if (type != null) {
 			for (AbstractDefinition definition : definitions) {
 				// TODO Replace filtering based on target type names by one that takes inheritance hierarchy into
 				// account, just as org.eclipse.xpand2.XpandExecutionContextImpl.findDefinition(XpandDefinition[],
 				// String, Type, Type[], XpandExecutionContext) does; provide a new helper method similar to
 				// org.eclipse.sphinx.xtendxpand.util.XtendXpandUtil.getApplicableFeatures(List<? extends Callable>,
 				// Class<?>, String, List<? extends Type>) to XtendXpandUtil for that purpose
 				if (type.getName().equals(definition.getTargetType()) || getSimpleTypeName(type).equals(definition.getTargetType())) {
 					result.add(definition.getName());
 				}
 			}
 		}
 		// TODO Create an empty combo item if result is empty
 		return result.toArray(new String[result.size()]);
 	}

 	/**
 	 * Gets the simple name of the given <code>type</type>.
 	 */
 	protected String getSimpleTypeName(Type type) {
 		String typeName = type.getName();
 		int idx = typeName.lastIndexOf(IXtendXpandConstants.NS_DELIMITER);
 		return idx != -1 && typeName.length() >= idx + IXtendXpandConstants.NS_DELIMITER.length() ? typeName.substring(idx
 				+ IXtendXpandConstants.NS_DELIMITER.length()) : typeName;
 	}

 	public String getDefinitionName() {
 		String selectedDefinitionName = getSelectedDefinitionFieldItem();
 		if (selectedDefinitionName != null) {
 			return XtendXpandUtil.getQualifiedName(getFile(getTemplateFileField().getText()), selectedDefinitionName);
 		}
 		return ""; //$NON-NLS-1$
 	}

 	protected void updateDefinitionNameField() {
 		IFile templateFile = getFile(templateFileField.getText());
 		if (templateFile != null) {
 			definitionNameField.setText(getDefinitionName());
 		} else {
 			definitionNameField.setText("..."); //$NON-NLS-1$
 		}
 	}

 	/**
 	 * Loads an Xpand resource.
 	 */
 	protected Template loadTemplate(final IFile templateFile) {
 		if (templateFile != null && templateFile.exists() && IXtendXpandConstants.TEMPLATE_EXTENSION.equals(templateFile.getFileExtension())) {
 			final IXtendXpandProject project = org.eclipse.xtend.shared.ui.Activator.getExtXptModelManager().findProject(templateFile);
 			if (project != null) {
 				final IXtendXpandResource resource = project.findXtendXpandResource(templateFile);
 				if (resource != null) {
 					return (Template) resource.getExtXptResource();
 				}
 			}
 		}
 		return null;
 	}

 	@Override
 	public boolean isGroupComplete() {
 		IFile templateFile = getFile(getTemplateFileField().getText());
 		if (templateFile != null) {
 			return templateFile.exists() && getDefinitionField().getSelectionIndex() != -1;
 		}
 		return false;
 	}

 	/**
 	 * Gets the file located at the given full path or returns null.
 	 */
 	public IFile getFile(String fullPath) {
 		if (fullPath != null && fullPath.length() > 0) {
 			Path path = new Path(fullPath);
 			if (path.segmentCount() > 1) {
 				return ResourcesPlugin.getWorkspace().getRoot().getFile(path);
 			}
 		}
 		return null;
 	}

 	public StringButtonField getTemplateFileField() {
 		return templateFileField;
 	}

 	public ComboField getDefinitionField() {
 		return definitionField;
 	}

 	public String getSelectedDefinitionFieldItem() {
 		if (definitionField != null && !definitionField.getComboControl().isDisposed()) {
 			String[] items = definitionField.getItems();
 			int selectionIndex = definitionField.getSelectionIndex();
 			if (items.length > 0 && selectionIndex != -1) {
 				return items[selectionIndex];
 			}
 		}
 		return null;
 	}

 	public StringField getDefinitionNameField() {
 		return definitionNameField;
 	}

 	public List<AbstractDefinition> getDefinitions() {
 		return definitions;
 	}

 	public Collection<XpandEvaluationRequest> getXpandEvaluationRequests() {
 		List<XpandEvaluationRequest> requests = new ArrayList<XpandEvaluationRequest>();
 		if (modelObject != null) {
 			String definitionName = getDefinitionName();
 			if (definitionName != null && definitionName.length() > 0) {
 				requests.add(new XpandEvaluationRequest(definitionName, modelObject));
 			}
 		}
 		return requests;
 	}

 	/**
 	 * Loads the template path and the define block from the dialog settings. Must call
 	 * {@link #setDialogSettings(IDialogSettings)} before calling this method.
 	 */
 	@Override
 	protected void loadGroupSettings() {
 		String templateFile = getTemplateFileFromDialogSettings();
 		if (templateFile != null) {
 			templateFileField.setText(templateFile);
 			updateDefinitionFieldItems(getFile(templateFile));
 			String definition = getDefinitionNameFromDialogSettings();
 			if (definition != null) {
 				definitionField.selectItem(definition);
 			}
 		}
 	}

 	public String getTemplateFileFromDialogSettings() {
 		String result = null;
 		String templateFileDialogSettingsKey = getTemplateFileDialogSettingsKey(modelObject);
 		IDialogSettings templateFileSection = getTemplateFileSection();
 		if (templateFileSection != null) {
 			String templateFilePath = templateFileSection.get(templateFileDialogSettingsKey);
 			if (templateFilePath != null) {
 				IFile templateFile = getFile(templateFilePath);
 				if (templateFile != null && templateFile.exists()) {
 					result = templateFilePath;
 				}
 			}
 		}
 		return result;
 	}

 	public String getDefinitionNameFromDialogSettings() {
 		String result = null;
 		IDialogSettings templateFileSection = getTemplateFileSection();
 		if (templateFileSection != null) {
 			result = templateFileSection.get(STORE_SELECTED_DEFINITION);
 		}
 		return result;
 	}

 	protected IDialogSettings getTemplateFileSection() {
 		IDialogSettings result = null;
 		String templateFileDialogSettingsKey = getTemplateFileDialogSettingsKey(modelObject);
 		IDialogSettings dialogSettings = getDialogSettings();
 		if (dialogSettings != null) {
 			IDialogSettings section = dialogSettings.getSection(CODE_GEN_SECTION);
 			if (section != null) {
 				result = section.getSection(templateFileDialogSettingsKey);
 			}
 		}
 		return result;
 	}

 	/**
 	 * Saves, using the {@link DialogSettings} dialogSettings, the state of the different fields of this group.
 	 *
 	 * @param templatePathDialogSettingsKey
 	 * @see #setDialogSettings(IDialogSettings)
 	 */
 	@Override
 	public void saveGroupSettings() {
 		IDialogSettings settings = getDialogSettings();
 		if (settings != null) {
 			String key = getTemplateFileDialogSettingsKey(modelObject);
 			IDialogSettings topLevelSection = settings.getSection(CODE_GEN_SECTION);
 			if (topLevelSection == null) {
 				topLevelSection = settings.addNewSection(CODE_GEN_SECTION);
 			}
 			if (templateFileField.getText().trim().length() != 0) {
 				IDialogSettings templateFileSection = topLevelSection.getSection(key);
 				if (templateFileSection == null) {
 					templateFileSection = topLevelSection.addNewSection(key);
 				}
 				templateFileSection.put(key, templateFileField.getText());
 				String[] items = definitionField.getItems();
 				int selectionIndex = definitionField.getSelectionIndex();
 				if (items.length > 0 && selectionIndex != -1) {
 					templateFileSection.put(STORE_SELECTED_DEFINITION, items[selectionIndex]);
 				}
 			}
 		}
 	}

 	protected String getTemplateFileDialogSettingsKey(EObject object) {
 		Assert.isNotNull(object);
 		return TemplateGroup.STORE_TEMPLATE_FILE + EcoreResourceUtil.getURI(object).toString();
 	}
 }
	/**
	* <copyright>
	*
	* Copyright (c) 2011 See4sys, itemis and others.
	* All rights reserved. This program and the accompanying materials
	* are made available under the terms of the Eclipse Public License v2.0
	* which accompanies this distribution, and is available at
	* https://www.eclipse.org/org/documents/epl-2.0/EPL-2.0.html
	*
	* Contributors:
	* See4sys - Initial API and implementation
	* itemis - [343844] Enable multiple Xtend MetaModels to be configured on BasicM2xAction, M2xConfigurationWizard, and Xtend/Xpand/CheckJob
	* itemis - [357813] Risk of NullPointerException when transforming models using M2MConfigurationWizard
	*
	* </copyright>
	*/
	package org.eclipse.sphinx.xtendxpand.ui.groups;

	import java.util.ArrayList;
	import java.util.Arrays;
	import java.util.Collection;
	import java.util.List;

	import org.eclipse.core.resources.IFile;
	import org.eclipse.core.resources.IResource;
	import org.eclipse.core.resources.ResourcesPlugin;
	import org.eclipse.core.runtime.Assert;
	import org.eclipse.core.runtime.IStatus;
	import org.eclipse.core.runtime.Path;
	import org.eclipse.core.runtime.Status;
	import org.eclipse.emf.ecore.EObject;
	import org.eclipse.internal.xpand2.ast.AbstractDefinition;
	import org.eclipse.internal.xpand2.ast.Template;
	import org.eclipse.jface.dialogs.DialogSettings;
	import org.eclipse.jface.dialogs.IDialogConstants;
	import org.eclipse.jface.dialogs.IDialogSettings;
	import org.eclipse.jface.viewers.Viewer;
	import org.eclipse.jface.viewers.ViewerFilter;
	import org.eclipse.sphinx.emf.mwe.IXtendXpandConstants;
	import org.eclipse.sphinx.emf.util.EcorePlatformUtil;
	import org.eclipse.sphinx.emf.util.EcoreResourceUtil;
	import org.eclipse.sphinx.platform.ui.fields.ComboField;
	import org.eclipse.sphinx.platform.ui.fields.IField;
	import org.eclipse.sphinx.platform.ui.fields.IFieldListener;
	import org.eclipse.sphinx.platform.ui.fields.StringButtonField;
	import org.eclipse.sphinx.platform.ui.fields.StringField;
	import org.eclipse.sphinx.platform.ui.fields.adapters.IButtonAdapter;
	import org.eclipse.sphinx.platform.ui.groups.AbstractGroup;
	import org.eclipse.sphinx.platform.util.ExtendedPlatform;
	import org.eclipse.sphinx.xtendxpand.XpandEvaluationRequest;
	import org.eclipse.sphinx.xtendxpand.ui.internal.Activator;
	import org.eclipse.sphinx.xtendxpand.ui.internal.messages.Messages;
	import org.eclipse.sphinx.xtendxpand.util.XtendXpandUtil;
	import org.eclipse.swt.layout.GridLayout;
	import org.eclipse.swt.widgets.Composite;
	import org.eclipse.ui.dialogs.ElementTreeSelectionDialog;
	import org.eclipse.ui.dialogs.ISelectionStatusValidator;
	import org.eclipse.ui.model.WorkbenchContentProvider;
	import org.eclipse.ui.model.WorkbenchLabelProvider;
	import org.eclipse.ui.views.navigator.ResourceComparator;
	import org.eclipse.xtend.expression.TypeSystem;
	import org.eclipse.xtend.shared.ui.core.IXtendXpandProject;
	import org.eclipse.xtend.shared.ui.core.IXtendXpandResource;
	import org.eclipse.xtend.typesystem.Type;

	public class TemplateGroup extends AbstractGroup {

	/**
	* The template group dialog settings.
	*/
	protected static final String CODE_GEN_SECTION = Activator.getPlugin().getSymbolicName() + ".CODE_GEN_SECTION"; //$NON-NLS-1$
	protected static final String STORE_TEMPLATE_FILE = "TEMPLATE_FILE$"; //$NON-NLS-1$
	protected static final String STORE_SELECTED_DEFINITION = "SELECTED_DEFINITION"; //$NON-NLS-1$

	/**
	* The template file field.
	*/
	protected StringButtonField templateFileField;

	/**
	* The definition field.
	*/
	protected ComboField definitionField;

	/**
	* The definition name field.
	*/
	protected StringField definitionNameField;

	/**
	* The selected model object.
	*/
	protected EObject modelObject;

	/**
	* The {@link TypeSystem type system} to be used.
	*/
	protected TypeSystem typeSystem;

	/**
	* Defined definitions in the template file.
	*/
	private List<AbstractDefinition> definitions;

	public TemplateGroup(String groupName, EObject modelObject, TypeSystem typeSystem) {
	this(groupName, modelObject, typeSystem, null);
	}

	public TemplateGroup(String groupName, EObject modelObject, TypeSystem typeSystem, IDialogSettings dialogSettings) {
	super(groupName, dialogSettings);

	Assert.isNotNull(typeSystem);

	this.modelObject = modelObject;
	this.typeSystem = typeSystem;
	}

	@Override
	protected void doCreateContent(final Composite parent, int numColumns) {
	parent.setLayout(new GridLayout(numColumns, false));

	// Template file field
	templateFileField = new StringButtonField(new IButtonAdapter() {

	@Override
	public void changeControlPressed(IField field) {
	ElementTreeSelectionDialog dialog = new ElementTreeSelectionDialog(parent.getShell(), new WorkbenchLabelProvider(),
	new WorkbenchContentProvider());
	dialog.setTitle(Messages.label_templateSelection);
	dialog.setMessage(Messages.msg_chooseTemplate);
	dialog.setInput(ResourcesPlugin.getWorkspace().getRoot());
	IFile modelFile = EcorePlatformUtil.getFile(modelObject);
	if (modelFile != null) {
	dialog.setInitialSelection(modelFile.getProject());
	}
	dialog.setComparator(new ResourceComparator(ResourceComparator.NAME));
	dialog.addFilter(new ViewerFilter() {

	@Override
	public boolean select(Viewer viewer, Object parentElement, Object element) {
	if (element instanceof IFile) {
	return IXtendXpandConstants.TEMPLATE_EXTENSION.equals(((IFile) element).getFileExtension());
	}
	if (element instanceof IResource) {
	return !ExtendedPlatform.isPlatformPrivateResource((IResource) element);
	}
	return true;
	}
	});
	dialog.setValidator(new ISelectionStatusValidator() {

	@Override
	public IStatus validate(Object[] selection) {
	int nSelected = selection.length;
	String pluginId = Activator.getPlugin().getSymbolicName();
	if (nSelected == 1 && selection[0] instanceof IFile) {
	IFile selectedFile = (IFile) selection[0];
	if (selectedFile.exists() && IXtendXpandConstants.TEMPLATE_EXTENSION.equals(selectedFile.getFileExtension())) {
	return Status.OK_STATUS;
	}
	}
	return new Status(IStatus.ERROR, pluginId, IStatus.ERROR, Messages.msg_chooseTemplateError, null);
	}
	});
	if (dialog.open() == IDialogConstants.OK_ID) {
	IFile file = (IFile) dialog.getFirstResult();
	if (file != null) {
	templateFileField.setText(file.getFullPath().makeRelative().toString());
	updateDefinitionFieldItems(file);
	}
	}
	}
	});
	templateFileField.setButtonLabel(Messages.label_browse);
	templateFileField.setLabelText(Messages.label_templateFile);
	templateFileField.fillIntoGrid(parent, numColumns);
	templateFileField.addFieldListener(new IFieldListener() {

	@Override
	public void dialogFieldChanged(IField field) {
	updateDefinitionFieldItems(getFile(templateFileField.getText()));
	updateDefinitionNameField();
	notifyGroupChanged(templateFileField);
	}
	});

	// Define block field
	definitionField = new ComboField(true);
	definitionField.setLabelText(Messages.label_definition);
	definitionField.fillIntoGrid(parent, numColumns);
	definitionField.addFieldListener(new IFieldListener() {

	@Override
	public void dialogFieldChanged(IField field) {
	updateDefinitionNameField();
	notifyGroupChanged(templateFileField);
	}
	});

	// Definition name field
	definitionNameField = new StringField();
	definitionNameField.setLabelText(Messages.label_definitionName);
	definitionNameField.setEditable(false);
	definitionNameField.fillIntoGrid(parent, numColumns);
	}

	/**
	* Updates items of define block field after loading selected template file.
	*/
	public void updateDefinitionFieldItems(IFile templateFile) {
	Template template = loadTemplate(templateFile);
	if (template != null) {
	definitions = Arrays.asList(template.getAllDefinitions());
	definitionField.setItems(createDefinitionFieldItems(definitions));
	return;
	}
	definitionField.setItems(new String[0]);
	}

	/**
	* Creates define block items.
	*/
	protected String[] createDefinitionFieldItems(List<AbstractDefinition> definitions) {
	List<String> result = new ArrayList<String>();
	Type type = typeSystem.getType(modelObject);
	if (type != null) {
	for (AbstractDefinition definition : definitions) {
	// TODO Replace filtering based on target type names by one that takes inheritance hierarchy into
	// account, just as org.eclipse.xpand2.XpandExecutionContextImpl.findDefinition(XpandDefinition[],
	// String, Type, Type[], XpandExecutionContext) does; provide a new helper method similar to
	// org.eclipse.sphinx.xtendxpand.util.XtendXpandUtil.getApplicableFeatures(List<? extends Callable>,
	// Class<?>, String, List<? extends Type>) to XtendXpandUtil for that purpose
	if (type.getName().equals(definition.getTargetType()) \|\| getSimpleTypeName(type).equals(definition.getTargetType())) {
	result.add(definition.getName());
	}
	}
	}
	// TODO Create an empty combo item if result is empty
	return result.toArray(new String[result.size()]);
	}

	/**
	* Gets the simple name of the given <code>type</type>.
	*/
	protected String getSimpleTypeName(Type type) {
	String typeName = type.getName();
	int idx = typeName.lastIndexOf(IXtendXpandConstants.NS_DELIMITER);
	return idx != -1 && typeName.length() >= idx + IXtendXpandConstants.NS_DELIMITER.length() ? typeName.substring(idx
	+ IXtendXpandConstants.NS_DELIMITER.length()) : typeName;
	}

	public String getDefinitionName() {
	String selectedDefinitionName = getSelectedDefinitionFieldItem();
	if (selectedDefinitionName != null) {
	return XtendXpandUtil.getQualifiedName(getFile(getTemplateFileField().getText()), selectedDefinitionName);
	}
	return ""; //$NON-NLS-1$
	}

	protected void updateDefinitionNameField() {
	IFile templateFile = getFile(templateFileField.getText());
	if (templateFile != null) {
	definitionNameField.setText(getDefinitionName());
	} else {
	definitionNameField.setText("..."); //$NON-NLS-1$
	}
	}

	/**
	* Loads an Xpand resource.
	*/
	protected Template loadTemplate(final IFile templateFile) {
	if (templateFile != null && templateFile.exists() && IXtendXpandConstants.TEMPLATE_EXTENSION.equals(templateFile.getFileExtension())) {
	final IXtendXpandProject project = org.eclipse.xtend.shared.ui.Activator.getExtXptModelManager().findProject(templateFile);
	if (project != null) {
	final IXtendXpandResource resource = project.findXtendXpandResource(templateFile);
	if (resource != null) {
	return (Template) resource.getExtXptResource();
	}
	}
	}
	return null;
	}

	@Override
	public boolean isGroupComplete() {
	IFile templateFile = getFile(getTemplateFileField().getText());
	if (templateFile != null) {
	return templateFile.exists() && getDefinitionField().getSelectionIndex() != -1;
	}
	return false;
	}

	/**
	* Gets the file located at the given full path or returns null.
	*/
	public IFile getFile(String fullPath) {
	if (fullPath != null && fullPath.length() > 0) {
	Path path = new Path(fullPath);
	if (path.segmentCount() > 1) {
	return ResourcesPlugin.getWorkspace().getRoot().getFile(path);
	}
	}
	return null;
	}

	public StringButtonField getTemplateFileField() {
	return templateFileField;
	}

	public ComboField getDefinitionField() {
	return definitionField;
	}

	public String getSelectedDefinitionFieldItem() {
	if (definitionField != null && !definitionField.getComboControl().isDisposed()) {
	String[] items = definitionField.getItems();
	int selectionIndex = definitionField.getSelectionIndex();
	if (items.length > 0 && selectionIndex != -1) {
	return items[selectionIndex];
	}
	}
	return null;
	}

	public StringField getDefinitionNameField() {
	return definitionNameField;
	}

	public List<AbstractDefinition> getDefinitions() {
	return definitions;
	}

	public Collection<XpandEvaluationRequest> getXpandEvaluationRequests() {
	List<XpandEvaluationRequest> requests = new ArrayList<XpandEvaluationRequest>();
	if (modelObject != null) {
	String definitionName = getDefinitionName();
	if (definitionName != null && definitionName.length() > 0) {
	requests.add(new XpandEvaluationRequest(definitionName, modelObject));
	}
	}
	return requests;
	}

	/**
	* Loads the template path and the define block from the dialog settings. Must call
	* {@link #setDialogSettings(IDialogSettings)} before calling this method.
	*/
	@Override
	protected void loadGroupSettings() {
	String templateFile = getTemplateFileFromDialogSettings();
	if (templateFile != null) {
	templateFileField.setText(templateFile);
	updateDefinitionFieldItems(getFile(templateFile));
	String definition = getDefinitionNameFromDialogSettings();
	if (definition != null) {
	definitionField.selectItem(definition);
	}
	}
	}

	public String getTemplateFileFromDialogSettings() {
	String result = null;
	String templateFileDialogSettingsKey = getTemplateFileDialogSettingsKey(modelObject);
	IDialogSettings templateFileSection = getTemplateFileSection();
	if (templateFileSection != null) {
	String templateFilePath = templateFileSection.get(templateFileDialogSettingsKey);
	if (templateFilePath != null) {
	IFile templateFile = getFile(templateFilePath);
	if (templateFile != null && templateFile.exists()) {
	result = templateFilePath;
	}
	}
	}
	return result;
	}

	public String getDefinitionNameFromDialogSettings() {
	String result = null;
	IDialogSettings templateFileSection = getTemplateFileSection();
	if (templateFileSection != null) {
	result = templateFileSection.get(STORE_SELECTED_DEFINITION);
	}
	return result;
	}

	protected IDialogSettings getTemplateFileSection() {
	IDialogSettings result = null;
	String templateFileDialogSettingsKey = getTemplateFileDialogSettingsKey(modelObject);
	IDialogSettings dialogSettings = getDialogSettings();
	if (dialogSettings != null) {
	IDialogSettings section = dialogSettings.getSection(CODE_GEN_SECTION);
	if (section != null) {
	result = section.getSection(templateFileDialogSettingsKey);
	}
	}
	return result;
	}

	/**
	* Saves, using the {@link DialogSettings} dialogSettings, the state of the different fields of this group.
	*
	* @param templatePathDialogSettingsKey
	* @see #setDialogSettings(IDialogSettings)
	*/
	@Override
	public void saveGroupSettings() {
	IDialogSettings settings = getDialogSettings();
	if (settings != null) {
	String key = getTemplateFileDialogSettingsKey(modelObject);
	IDialogSettings topLevelSection = settings.getSection(CODE_GEN_SECTION);
	if (topLevelSection == null) {
	topLevelSection = settings.addNewSection(CODE_GEN_SECTION);
	}
	if (templateFileField.getText().trim().length() != 0) {
	IDialogSettings templateFileSection = topLevelSection.getSection(key);
	if (templateFileSection == null) {
	templateFileSection = topLevelSection.addNewSection(key);
	}
	templateFileSection.put(key, templateFileField.getText());
	String[] items = definitionField.getItems();
	int selectionIndex = definitionField.getSelectionIndex();
	if (items.length > 0 && selectionIndex != -1) {
	templateFileSection.put(STORE_SELECTED_DEFINITION, items[selectionIndex]);
	}
	}
	}
	}

	protected String getTemplateFileDialogSettingsKey(EObject object) {
	Assert.isNotNull(object);
	return TemplateGroup.STORE_TEMPLATE_FILE + EcoreResourceUtil.getURI(object).toString();
	}
	}