common/plugins/org.eclipse.jpt.common.ui/src/org/eclipse/jpt/common/ui/internal/widgets/ClassChooserPane.java - dali/webtools.dali - Git at Google

 /*******************************************************************************
  * Copyright (c) 2008, 2011 Oracle. 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:
  *     Oracle - initial API and implementation
  ******************************************************************************/
 package org.eclipse.jpt.common.ui.internal.widgets;

 import java.util.Collections;
 import java.util.Iterator;
 import java.util.List;
 import org.eclipse.jdt.core.IJavaElement;
 import org.eclipse.jdt.core.IJavaProject;
 import org.eclipse.jdt.core.IPackageFragment;
 import org.eclipse.jdt.core.IPackageFragmentRoot;
 import org.eclipse.jdt.core.IType;
 import org.eclipse.jdt.core.JavaModelException;
 import org.eclipse.jdt.core.search.IJavaSearchScope;
 import org.eclipse.jdt.core.search.SearchEngine;
 import org.eclipse.jdt.internal.ui.refactoring.contentassist.ControlContentAssistHelper;
 import org.eclipse.jdt.internal.ui.refactoring.contentassist.JavaTypeCompletionProcessor;
 import org.eclipse.jdt.internal.ui.wizards.NewClassCreationWizard;
 import org.eclipse.jdt.ui.IJavaElementSearchConstants;
 import org.eclipse.jdt.ui.JavaUI;
 import org.eclipse.jdt.ui.wizards.NewClassWizardPage;
 import org.eclipse.jface.viewers.StructuredSelection;
 import org.eclipse.jface.window.Window;
 import org.eclipse.jface.wizard.WizardDialog;
 import org.eclipse.jpt.common.core.internal.utility.JDTTools;
 import org.eclipse.jpt.common.ui.JptCommonUiPlugin;
 import org.eclipse.jpt.common.ui.internal.JptCommonUiMessages;
 import org.eclipse.jpt.common.ui.internal.listeners.SWTPropertyChangeListenerWrapper;
 import org.eclipse.jpt.common.utility.internal.ClassName;
 import org.eclipse.jpt.common.utility.internal.StringTools;
 import org.eclipse.jpt.common.utility.model.Model;
 import org.eclipse.jpt.common.utility.model.event.PropertyChangeEvent;
 import org.eclipse.jpt.common.utility.model.listener.PropertyChangeListener;
 import org.eclipse.jpt.common.utility.model.value.PropertyValueModel;
 import org.eclipse.jpt.common.utility.model.value.WritablePropertyValueModel;
 import org.eclipse.swt.widgets.Composite;
 import org.eclipse.swt.widgets.Control;
 import org.eclipse.swt.widgets.Text;
 import org.eclipse.ui.PartInitException;
 import org.eclipse.ui.PlatformUI;
 import org.eclipse.ui.dialogs.SelectionDialog;
 import org.eclipse.ui.forms.widgets.Hyperlink;

 /**
  * This chooser allows the user to choose a type when browsing and it adds code
  * completion support to the text field, which is the main component.
  * <p>
  * Here the layout of this pane:
  * <pre>
  * -----------------------------------------------------------------------------
  * |        ---------------------------------------------------- ------------- |
  * | Label: | I                                                | | Browse... | |
  * |        ---------------------------------------------------- ------------- |
  * -----------------------------------------------------------------------------</pre>
  *
  * @version 2.3
  * @since 2.0
  */
 @SuppressWarnings("nls")
 public abstract class ClassChooserPane<T extends Model> extends ChooserPane<T>
 {
 	/**
 	 * The code completion manager.
 	 */
 	protected JavaTypeCompletionProcessor javaTypeCompletionProcessor;

 	private PropertyChangeListener subjectChangeListener;

 	/**
 	 * Creates a new <code>ClassChooserPane</code>.
 	 *
 	 * @param parentPane The parent pane of this one
 	 * @param parent The parent container
 	 */
 	public ClassChooserPane(Pane<? extends T> parentPane,
 	                        Composite parent) {

 		super(parentPane, parent);
 	}

 	/**
 	 * Creates a new <code>ClassChooserPane</code>.
 	 *
 	 * @param parentPane The parent container of this one
 	 * @param subjectHolder The holder of this pane's subject
 	 * @param parent The parent container
 	 */
 	public ClassChooserPane(Pane<?> parentPane,
 	                        PropertyValueModel<? extends T> subjectHolder,
 	                        Composite parent) {

 		super(parentPane, subjectHolder, parent);
 	}

 	@Override
 	protected void initialize() {
 		super.initialize();

 		// TODO bug 156185 - when this is fixed there should be api for this
 		this.javaTypeCompletionProcessor = new JavaTypeCompletionProcessor(false, false);

 		this.subjectChangeListener = this.buildSubjectChangeListener();
 		this.getSubjectHolder().addPropertyChangeListener(PropertyValueModel.VALUE, this.subjectChangeListener);

 		this.classChooserSubjectChanged(getSubject());
 	}

 	private PropertyChangeListener buildSubjectChangeListener() {
 		return new SWTPropertyChangeListenerWrapper(this.buildSubjectChangeListener_());
 	}

 	private PropertyChangeListener buildSubjectChangeListener_() {
 		return new PropertyChangeListener() {
 			@SuppressWarnings("unchecked")
 			public void propertyChanged(PropertyChangeEvent e) {
 				ClassChooserPane.this.classChooserSubjectChanged((T) e.getNewValue());
 			}
 		};
 	}

 	protected void classChooserSubjectChanged(T newSubject) {
 		IPackageFragment packageFragment = null;
 		if (newSubject != null) {
 			IPackageFragmentRoot root = getPackageFragmentRoot();
 			if (root != null) {
 				packageFragment = root.getPackageFragment("");
 			}
 		}
 		this.javaTypeCompletionProcessor.setPackageFragment(packageFragment);
 	}

 	@Override
 	protected Control addLeftControl(Composite container) {
 		if( ! this.allowTypeCreation()) {
 			return super.addLeftControl(container);
 		}
 		Hyperlink labelLink = this.addHyperlink(container,
 			this.getLabelText(),
 			this.buildHyperLinkAction()
 		);
 		return labelLink;
 	}

 	private Runnable buildHyperLinkAction() {
 		return new Runnable() {
 			public void run() {
 				ClassChooserPane.this.hyperLinkSelected();
 			}
 		};
 	}

 	protected void hyperLinkSelected() {
 		IType type = getType();
 		if (type != null) {
 			openInEditor(type);
 		}
 		else if (allowTypeCreation()){
 			createType();
 		}
 	}

 	protected IType getType() {
 		if (getClassName() == null) {
 			return null;
 		}
 		IType type = null;
 		try {
 			type = getJavaProject().findType(getClassName().replace('$', '.'));
 		}
 		catch (JavaModelException e) {
 			JptCommonUiPlugin.log(e);
 		}
 		return type;
 	}

 	protected void createType() {
 		StructuredSelection selection = new StructuredSelection(getJavaProject().getProject());

 		NewClassWizardPage newClassWizardPage = new NewClassWizardPage();
 		newClassWizardPage.init(selection);
 		newClassWizardPage.setSuperClass(getSuperclassName(), true);
 		newClassWizardPage.setSuperInterfaces(getSuperInterfaceNames(), true);
 		if (!StringTools.stringIsEmpty(getClassName())) {
 			newClassWizardPage.setTypeName(ClassName.getSimpleName(getClassName()), true);
 			String packageName = ClassName.getPackageName(getClassName());
 			newClassWizardPage.setPackageFragment(getFirstJavaSourceFolder().getPackageFragment(packageName), true);
 		}
 		NewClassCreationWizard wizard = new NewClassCreationWizard(newClassWizardPage, false);
 		wizard.init(PlatformUI.getWorkbench(), selection);

 		WizardDialog dialog = new WizardDialog(getShell(), wizard);
 		dialog.create();
 		int dResult = dialog.open();
 		if (dResult == Window.OK) {
 			String className = (newClassWizardPage.getCreatedType()).getFullyQualifiedName(getEnclosingTypeSeparator());
 			setClassName(className);
 		}
 	}

 	protected abstract void setClassName(String className);

 	/**
 	 * Override this to change the enclosing type separator
 	 */
 	protected char getEnclosingTypeSeparator() {
 		return '$';
 	}

 	/**
 	 * Override this to set a superclass in the New Class wizard.  If no class is chosen,
 	 * clicking the hyperlink label will open the new class wizard.
 	 */
 	protected String getSuperclassName() {
 		return "";
 	}

 	/**
 	 * Override this to set a super interface in the New Class wizard.  If no class is chosen,
 	 * clicking the hyperlink label will open the new class wizard.
 	 * @see getSuperInterfaceName
 	 */
 	protected List<String> getSuperInterfaceNames() {
 		return getSuperInterfaceName() != null ? Collections.singletonList(getSuperInterfaceName()) : Collections.<String>emptyList();
 	}

 	/**
 	 * Override this to set a super interface in the New Class wizard.  If no class is chosen,
 	 * clicking the hyperlink label will open the new class wizard.
 	 */
 	protected String getSuperInterfaceName() {
 		return null;
 	}

 	/**
 	 * Override this if it does not make sense to allow the user to create a new type.
 	 * This will determine whether clicking the hyperlink opens the New Class wizard
 	 * @return
 	 */
 	protected boolean allowTypeCreation() {
 		return true;
 	}

 	protected void openInEditor(IType type) {
 		IJavaElement javaElement = type.getParent();
 		try {
 			JavaUI.openInEditor(javaElement, true, true);
 		}
 		catch (JavaModelException e) {
 			JptCommonUiPlugin.log(e);
 		}
 		catch (PartInitException e) {
 			JptCommonUiPlugin.log(e);
 		}
 	}

 	protected abstract IJavaProject getJavaProject();

 	@Override
 	protected final Runnable buildBrowseAction() {
 		return new Runnable() {
 			public void run() {
 				promptType();
 			}
 		};
 	}

 	@Override
 	protected Control addMainControl(Composite container) {
 		Composite subPane = addSubPane(container);
 		Text text = addText(subPane, buildTextHolder());

 		ControlContentAssistHelper.createTextContentAssistant(
 			text,
 			javaTypeCompletionProcessor
 		);

 		return subPane;
 	}

 	/**
 	 * Creates the value holder of the subject's property.
 	 *
 	 * @return The holder of the class name
 	 */
 	protected abstract WritablePropertyValueModel<String> buildTextHolder();

 	/**
 	 * Prompts the user the Open Type dialog.
 	 *
 	 * @return Either the selected type or <code>null</code> if the user
 	 * cancelled the dialog
 	 */
 	protected IType chooseType() {
 		IJavaElement[] elements = new IJavaElement[] { getJavaProject() };
 		IJavaSearchScope scope = SearchEngine.createJavaSearchScope(elements);
 		SelectionDialog typeSelectionDialog;

 		try {
 			typeSelectionDialog = JavaUI.createTypeDialog(
 				getShell(),
 				PlatformUI.getWorkbench().getProgressService(),
 				scope,
 				getTypeDialogStyle(),
 				false,
 				StringTools.stringIsEmpty(getClassName()) ? "" : ClassName.getSimpleName(getClassName())
 			);
 		}
 		catch (JavaModelException e) {
 			JptCommonUiPlugin.log(e);
 			return null;
 		}

 		typeSelectionDialog.setTitle(JptCommonUiMessages.ClassChooserPane_dialogTitle);
 		typeSelectionDialog.setMessage(JptCommonUiMessages.ClassChooserPane_dialogMessage);

 		if (typeSelectionDialog.open() == Window.OK) {
 			return (IType) typeSelectionDialog.getResult()[0];
 		}

 		return null;
 	}

 	protected int getTypeDialogStyle() {
 		return IJavaElementSearchConstants.CONSIDER_CLASSES;
 	}

 	/**
 	 * Returns the class name from its subject.
 	 *
 	 * @return The class name or <code>null</code> if none is defined
 	 */
 	protected abstract String getClassName();

 	protected IPackageFragmentRoot getFirstJavaSourceFolder() {
 		Iterator<IPackageFragmentRoot> i = JDTTools.getJavaSourceFolders(getJavaProject()).iterator();
 		return i.hasNext() ? i.next() : null;
 	}

 	/**
 	 * The browse button was clicked, its action invokes this action which should
 	 * prompt the user to select a class and set it.
 	 */
 	protected void promptType() {
 		IType type = this.chooseType();

 		if (type != null) {
 			String className = type.getFullyQualifiedName(getEnclosingTypeSeparator());
 			setClassName(className);
 		}
 	}

 	protected IPackageFragmentRoot getPackageFragmentRoot() {
 		try {
 			return this.getJavaProject().getPackageFragmentRoots()[0];
 		} catch (JavaModelException ex) {
 			JptCommonUiPlugin.log(ex);
 			return null;
 		}
 	}

 	@Override
 	public void dispose() {
 		this.getSubjectHolder().removePropertyChangeListener(PropertyValueModel.VALUE, this.subjectChangeListener);
 		super.dispose();
 	}
 }
	/*******************************************************************************
	* Copyright (c) 2008, 2011 Oracle. 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:
	* Oracle - initial API and implementation
	******************************************************************************/
	package org.eclipse.jpt.common.ui.internal.widgets;

	import java.util.Collections;
	import java.util.Iterator;
	import java.util.List;
	import org.eclipse.jdt.core.IJavaElement;
	import org.eclipse.jdt.core.IJavaProject;
	import org.eclipse.jdt.core.IPackageFragment;
	import org.eclipse.jdt.core.IPackageFragmentRoot;
	import org.eclipse.jdt.core.IType;
	import org.eclipse.jdt.core.JavaModelException;
	import org.eclipse.jdt.core.search.IJavaSearchScope;
	import org.eclipse.jdt.core.search.SearchEngine;
	import org.eclipse.jdt.internal.ui.refactoring.contentassist.ControlContentAssistHelper;
	import org.eclipse.jdt.internal.ui.refactoring.contentassist.JavaTypeCompletionProcessor;
	import org.eclipse.jdt.internal.ui.wizards.NewClassCreationWizard;
	import org.eclipse.jdt.ui.IJavaElementSearchConstants;
	import org.eclipse.jdt.ui.JavaUI;
	import org.eclipse.jdt.ui.wizards.NewClassWizardPage;
	import org.eclipse.jface.viewers.StructuredSelection;
	import org.eclipse.jface.window.Window;
	import org.eclipse.jface.wizard.WizardDialog;
	import org.eclipse.jpt.common.core.internal.utility.JDTTools;
	import org.eclipse.jpt.common.ui.JptCommonUiPlugin;
	import org.eclipse.jpt.common.ui.internal.JptCommonUiMessages;
	import org.eclipse.jpt.common.ui.internal.listeners.SWTPropertyChangeListenerWrapper;
	import org.eclipse.jpt.common.utility.internal.ClassName;
	import org.eclipse.jpt.common.utility.internal.StringTools;
	import org.eclipse.jpt.common.utility.model.Model;
	import org.eclipse.jpt.common.utility.model.event.PropertyChangeEvent;
	import org.eclipse.jpt.common.utility.model.listener.PropertyChangeListener;
	import org.eclipse.jpt.common.utility.model.value.PropertyValueModel;
	import org.eclipse.jpt.common.utility.model.value.WritablePropertyValueModel;
	import org.eclipse.swt.widgets.Composite;
	import org.eclipse.swt.widgets.Control;
	import org.eclipse.swt.widgets.Text;
	import org.eclipse.ui.PartInitException;
	import org.eclipse.ui.PlatformUI;
	import org.eclipse.ui.dialogs.SelectionDialog;
	import org.eclipse.ui.forms.widgets.Hyperlink;

	/**
	* This chooser allows the user to choose a type when browsing and it adds code
	* completion support to the text field, which is the main component.
	* <p>
	* Here the layout of this pane:
	* <pre>
	* -----------------------------------------------------------------------------
	* \| ---------------------------------------------------- ------------- \|
	* \| Label: \| I \| \| Browse... \| \|
	* \| ---------------------------------------------------- ------------- \|
	* -----------------------------------------------------------------------------</pre>
	*
	* @version 2.3
	* @since 2.0
	*/
	@SuppressWarnings("nls")
	public abstract class ClassChooserPane<T extends Model> extends ChooserPane<T>
	{
	/**
	* The code completion manager.
	*/
	protected JavaTypeCompletionProcessor javaTypeCompletionProcessor;

	private PropertyChangeListener subjectChangeListener;

	/**
	* Creates a new <code>ClassChooserPane</code>.
	*
	* @param parentPane The parent pane of this one
	* @param parent The parent container
	*/
	public ClassChooserPane(Pane<? extends T> parentPane,
	Composite parent) {

	super(parentPane, parent);
	}

	/**
	* Creates a new <code>ClassChooserPane</code>.
	*
	* @param parentPane The parent container of this one
	* @param subjectHolder The holder of this pane's subject
	* @param parent The parent container
	*/
	public ClassChooserPane(Pane<?> parentPane,
	PropertyValueModel<? extends T> subjectHolder,
	Composite parent) {

	super(parentPane, subjectHolder, parent);
	}

	@Override
	protected void initialize() {
	super.initialize();

	// TODO bug 156185 - when this is fixed there should be api for this
	this.javaTypeCompletionProcessor = new JavaTypeCompletionProcessor(false, false);

	this.subjectChangeListener = this.buildSubjectChangeListener();
	this.getSubjectHolder().addPropertyChangeListener(PropertyValueModel.VALUE, this.subjectChangeListener);

	this.classChooserSubjectChanged(getSubject());
	}

	private PropertyChangeListener buildSubjectChangeListener() {
	return new SWTPropertyChangeListenerWrapper(this.buildSubjectChangeListener_());
	}

	private PropertyChangeListener buildSubjectChangeListener_() {
	return new PropertyChangeListener() {
	@SuppressWarnings("unchecked")
	public void propertyChanged(PropertyChangeEvent e) {
	ClassChooserPane.this.classChooserSubjectChanged((T) e.getNewValue());
	}
	};
	}

	protected void classChooserSubjectChanged(T newSubject) {
	IPackageFragment packageFragment = null;
	if (newSubject != null) {
	IPackageFragmentRoot root = getPackageFragmentRoot();
	if (root != null) {
	packageFragment = root.getPackageFragment("");
	}
	}
	this.javaTypeCompletionProcessor.setPackageFragment(packageFragment);
	}

	@Override
	protected Control addLeftControl(Composite container) {
	if( ! this.allowTypeCreation()) {
	return super.addLeftControl(container);
	}
	Hyperlink labelLink = this.addHyperlink(container,
	this.getLabelText(),
	this.buildHyperLinkAction()
	);
	return labelLink;
	}

	private Runnable buildHyperLinkAction() {
	return new Runnable() {
	public void run() {
	ClassChooserPane.this.hyperLinkSelected();
	}
	};
	}

	protected void hyperLinkSelected() {
	IType type = getType();
	if (type != null) {
	openInEditor(type);
	}
	else if (allowTypeCreation()){
	createType();
	}
	}

	protected IType getType() {
	if (getClassName() == null) {
	return null;
	}
	IType type = null;
	try {
	type = getJavaProject().findType(getClassName().replace('$', '.'));
	}
	catch (JavaModelException e) {
	JptCommonUiPlugin.log(e);
	}
	return type;
	}

	protected void createType() {
	StructuredSelection selection = new StructuredSelection(getJavaProject().getProject());

	NewClassWizardPage newClassWizardPage = new NewClassWizardPage();
	newClassWizardPage.init(selection);
	newClassWizardPage.setSuperClass(getSuperclassName(), true);
	newClassWizardPage.setSuperInterfaces(getSuperInterfaceNames(), true);
	if (!StringTools.stringIsEmpty(getClassName())) {
	newClassWizardPage.setTypeName(ClassName.getSimpleName(getClassName()), true);
	String packageName = ClassName.getPackageName(getClassName());
	newClassWizardPage.setPackageFragment(getFirstJavaSourceFolder().getPackageFragment(packageName), true);
	}
	NewClassCreationWizard wizard = new NewClassCreationWizard(newClassWizardPage, false);
	wizard.init(PlatformUI.getWorkbench(), selection);

	WizardDialog dialog = new WizardDialog(getShell(), wizard);
	dialog.create();
	int dResult = dialog.open();
	if (dResult == Window.OK) {
	String className = (newClassWizardPage.getCreatedType()).getFullyQualifiedName(getEnclosingTypeSeparator());
	setClassName(className);
	}
	}

	protected abstract void setClassName(String className);

	/**
	* Override this to change the enclosing type separator
	*/
	protected char getEnclosingTypeSeparator() {
	return '$';
	}

	/**
	* Override this to set a superclass in the New Class wizard. If no class is chosen,
	* clicking the hyperlink label will open the new class wizard.
	*/
	protected String getSuperclassName() {
	return "";
	}

	/**
	* Override this to set a super interface in the New Class wizard. If no class is chosen,
	* clicking the hyperlink label will open the new class wizard.
	* @see getSuperInterfaceName
	*/
	protected List<String> getSuperInterfaceNames() {
	return getSuperInterfaceName() != null ? Collections.singletonList(getSuperInterfaceName()) : Collections.<String>emptyList();
	}

	/**
	* Override this to set a super interface in the New Class wizard. If no class is chosen,
	* clicking the hyperlink label will open the new class wizard.
	*/
	protected String getSuperInterfaceName() {
	return null;
	}

	/**
	* Override this if it does not make sense to allow the user to create a new type.
	* This will determine whether clicking the hyperlink opens the New Class wizard
	* @return
	*/
	protected boolean allowTypeCreation() {
	return true;
	}

	protected void openInEditor(IType type) {
	IJavaElement javaElement = type.getParent();
	try {
	JavaUI.openInEditor(javaElement, true, true);
	}
	catch (JavaModelException e) {
	JptCommonUiPlugin.log(e);
	}
	catch (PartInitException e) {
	JptCommonUiPlugin.log(e);
	}
	}

	protected abstract IJavaProject getJavaProject();

	@Override
	protected final Runnable buildBrowseAction() {
	return new Runnable() {
	public void run() {
	promptType();
	}
	};
	}

	@Override
	protected Control addMainControl(Composite container) {
	Composite subPane = addSubPane(container);
	Text text = addText(subPane, buildTextHolder());

	ControlContentAssistHelper.createTextContentAssistant(
	text,
	javaTypeCompletionProcessor
	);

	return subPane;
	}

	/**
	* Creates the value holder of the subject's property.
	*
	* @return The holder of the class name
	*/
	protected abstract WritablePropertyValueModel<String> buildTextHolder();

	/**
	* Prompts the user the Open Type dialog.
	*
	* @return Either the selected type or <code>null</code> if the user
	* cancelled the dialog
	*/
	protected IType chooseType() {
	IJavaElement[] elements = new IJavaElement[] { getJavaProject() };
	IJavaSearchScope scope = SearchEngine.createJavaSearchScope(elements);
	SelectionDialog typeSelectionDialog;

	try {
	typeSelectionDialog = JavaUI.createTypeDialog(
	getShell(),
	PlatformUI.getWorkbench().getProgressService(),
	scope,
	getTypeDialogStyle(),
	false,
	StringTools.stringIsEmpty(getClassName()) ? "" : ClassName.getSimpleName(getClassName())
	);
	}
	catch (JavaModelException e) {
	JptCommonUiPlugin.log(e);
	return null;
	}

	typeSelectionDialog.setTitle(JptCommonUiMessages.ClassChooserPane_dialogTitle);
	typeSelectionDialog.setMessage(JptCommonUiMessages.ClassChooserPane_dialogMessage);

	if (typeSelectionDialog.open() == Window.OK) {
	return (IType) typeSelectionDialog.getResult()[0];
	}

	return null;
	}

	protected int getTypeDialogStyle() {
	return IJavaElementSearchConstants.CONSIDER_CLASSES;
	}

	/**
	* Returns the class name from its subject.
	*
	* @return The class name or <code>null</code> if none is defined
	*/
	protected abstract String getClassName();

	protected IPackageFragmentRoot getFirstJavaSourceFolder() {
	Iterator<IPackageFragmentRoot> i = JDTTools.getJavaSourceFolders(getJavaProject()).iterator();
	return i.hasNext() ? i.next() : null;
	}

	/**
	* The browse button was clicked, its action invokes this action which should
	* prompt the user to select a class and set it.
	*/
	protected void promptType() {
	IType type = this.chooseType();

	if (type != null) {
	String className = type.getFullyQualifiedName(getEnclosingTypeSeparator());
	setClassName(className);
	}
	}

	protected IPackageFragmentRoot getPackageFragmentRoot() {
	try {
	return this.getJavaProject().getPackageFragmentRoots()[0];
	} catch (JavaModelException ex) {
	JptCommonUiPlugin.log(ex);
	return null;
	}
	}

	@Override
	public void dispose() {
	this.getSubjectHolder().removePropertyChangeListener(PropertyValueModel.VALUE, this.subjectChangeListener);
	super.dispose();
	}
	}