plugins/org.eclipse.eef.ide.ui/src/org/eclipse/eef/ide/ui/internal/widgets/EEFListLifecycleManager.java - eef/org.eclipse.eef - Git at Google

 /*******************************************************************************
  * Copyright (c) 2016, 2017 Obeo.
  * 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:
  *    Obeo - initial API and implementation
  *******************************************************************************/
 package org.eclipse.eef.ide.ui.internal.widgets;

 import java.util.ArrayList;
 import java.util.List;

 import org.eclipse.core.runtime.IStatus;
 import org.eclipse.eef.EEFListDescription;
 import org.eclipse.eef.EEFWidgetAction;
 import org.eclipse.eef.EEFWidgetDescription;
 import org.eclipse.eef.common.ui.api.EEFWidgetFactory;
 import org.eclipse.eef.common.ui.api.IEEFFormContainer;
 import org.eclipse.eef.common.ui.api.SWTUtils;
 import org.eclipse.eef.core.api.EditingContextAdapter;
 import org.eclipse.eef.core.api.controllers.EEFControllersFactory;
 import org.eclipse.eef.core.api.controllers.IEEFListController;
 import org.eclipse.eef.core.api.controllers.IEEFWidgetController;
 import org.eclipse.eef.ide.ui.api.widgets.AbstractEEFWidgetLifecycleManager;
 import org.eclipse.eef.ide.ui.internal.EEFIdeUiPlugin;
 import org.eclipse.jface.viewers.ArrayContentProvider;
 import org.eclipse.jface.viewers.ISelection;
 import org.eclipse.jface.viewers.IStructuredSelection;
 import org.eclipse.jface.viewers.StructuredSelection;
 import org.eclipse.jface.viewers.TableViewer;
 import org.eclipse.sirius.common.interpreter.api.IInterpreter;
 import org.eclipse.sirius.common.interpreter.api.IVariableManager;
 import org.eclipse.swt.SWT;
 import org.eclipse.swt.custom.ScrolledComposite;
 import org.eclipse.swt.events.SelectionListener;
 import org.eclipse.swt.graphics.Color;
 import org.eclipse.swt.layout.GridData;
 import org.eclipse.swt.layout.GridLayout;
 import org.eclipse.swt.widgets.Composite;
 import org.eclipse.swt.widgets.Control;
 import org.eclipse.swt.widgets.Table;

 /**
  * This class will be used in order to manager the lifecycle of a list widget.
  *
  * @author sbegaudeau
  */
 public class EEFListLifecycleManager extends AbstractEEFWidgetLifecycleManager {
 	/**
 	 * Default height.
 	 */
 	private static final int DEFAULT_HEIGHT = 34;

 	/**
 	 * Minimal height of the table widget.
 	 */
 	private static final int TABLE_MINIMAL_HEIGHT = 100;

 	/**
 	 * The description.
 	 */
 	private EEFListDescription description;

 	/**
 	 * The widget factory.
 	 */
 	private EEFWidgetFactory widgetFactory;

 	/**
 	 * The action buttons.
 	 */
 	private List<ActionButton> actionButtons = new ArrayList<ActionButton>();

 	/**
 	 * The default background color of the text field.
 	 */
 	private Color defaultBackgroundColor;

 	/**
 	 * The controller.
 	 */
 	private IEEFListController controller;

 	/**
 	 * The table viewer used to display the list.
 	 */
 	private TableViewer tableViewer;

 	/**
 	 * The listener used to run the onClick expression when the user will click on the table.
 	 */
 	private SelectionListener tableSelectionListener;

 	/**
 	 * The constructor.
 	 *
 	 * @param description
 	 *            The description
 	 * @param variableManager
 	 *            The variable manager
 	 * @param interpreter
 	 *            The interpreter
 	 * @param editingContextAdapter
 	 *            The editing context adapter
 	 */
 	public EEFListLifecycleManager(EEFListDescription description, IVariableManager variableManager, IInterpreter interpreter,
 			EditingContextAdapter editingContextAdapter) {
 		super(variableManager, interpreter, editingContextAdapter);
 		this.description = description;
 	}

 	/**
 	 * {@inheritDoc}
 	 *
 	 * @see org.eclipse.eef.ide.ui.api.widgets.AbstractEEFWidgetLifecycleManager#createMainControl(org.eclipse.swt.widgets.Composite,
 	 *      org.eclipse.eef.common.ui.api.IEEFFormContainer)
 	 */
 	@Override
 	protected void createMainControl(Composite parent, IEEFFormContainer formContainer) {
 		widgetFactory = formContainer.getWidgetFactory();
 		defaultBackgroundColor = parent.getBackground();

 		// this is the parent composite
 		Composite list = widgetFactory.createFlatFormComposite(parent);
 		GridLayout layout = new GridLayout(2, false);
 		list.setLayout(layout);

 		GridData gridData = new GridData(SWT.FILL, SWT.CENTER, true, false);
 		list.setLayoutData(gridData);

 		this.createListWidget(list);
 		this.createWidgetActionButtons(list);

 		widgetFactory.paintBordersFor(parent);

 		this.controller = new EEFControllersFactory().createListController(this.description, this.variableManager, this.interpreter,
 				this.editingContextAdapter);
 	}

 	/**
 	 * Create table widget.
 	 *
 	 * @param parent
 	 *            The parent composite
 	 */
 	private void createListWidget(Composite parent) {
 		ScrolledComposite scrolledComposite = widgetFactory.createScrolledComposite(parent, SWT.NONE);
 		GridData gridData = new GridData();
 		gridData.grabExcessHorizontalSpace = true;
 		gridData.horizontalAlignment = SWT.FILL;
 		scrolledComposite.setLayoutData(gridData);

 		// CHECKSTYLE:OFF
 		int style = SWT.READ_ONLY | SWT.V_SCROLL | SWT.FULL_SELECTION | SWT.BORDER | SWT.MULTI | SWT.VIRTUAL;
 		// CHECKSTYLE:ON

 		Table table = widgetFactory.createTable(scrolledComposite, style);
 		this.tableViewer = new TableViewer(table);

 		GridData tableGridData = new GridData(SWT.FILL, SWT.TOP, true, false, 1, 1);
 		tableGridData.horizontalIndent = VALIDATION_MARKER_OFFSET;
 		this.tableViewer.getTable().setLayoutData(tableGridData);

 		this.tableViewer.setContentProvider(ArrayContentProvider.getInstance());
 		this.tableViewer.setLabelProvider(new EEFListTableLabelProvider(this.description, this.interpreter, this.variableManager));

 		scrolledComposite.setContent(table);

 		int widgetHeight = DEFAULT_HEIGHT;
 		List<EEFWidgetAction> actions = description.getActions();
 		if (actions != null && actions.size() > 0) {
 			widgetHeight = widgetHeight * (actions.size() + 1);
 		}

 		final int clientWidth = scrolledComposite.getClientArea().width;
 		this.tableViewer.getTable().setSize(clientWidth, Math.max(TABLE_MINIMAL_HEIGHT, widgetHeight));

 		scrolledComposite.setExpandHorizontal(true);
 		scrolledComposite.setAlwaysShowScrollBars(true);
 	}

 	/**
 	 * Create widget action buttons.
 	 *
 	 * @param parent
 	 *            The parent composite
 	 */
 	private void createWidgetActionButtons(Composite parent) {
 		Composite buttons = widgetFactory.createFlatFormComposite(parent);

 		GridData gridData = new GridData();
 		gridData.verticalAlignment = SWT.BEGINNING;
 		buttons.setLayoutData(gridData);

 		buttons.setLayout(new GridLayout(1, false));

 		// Buttons are visible only if an action is defined
 		for (EEFWidgetAction action : this.description.getActions()) {
 			ActionButton actionButton = new ActionButton(action, buttons, widgetFactory, this.interpreter, this.variableManager);
 			actionButtons.add(actionButton);
 		}

 	}

 	/**
 	 * {@inheritDoc}
 	 *
 	 * @see org.eclipse.eef.ide.ui.api.widgets.AbstractEEFWidgetLifecycleManager#aboutToBeShown()
 	 */
 	@Override
 	public void aboutToBeShown() {
 		super.aboutToBeShown();

 		this.tableSelectionListener = new EEFListSelectionListener(this.controller);
 		this.tableViewer.getTable().addSelectionListener(tableSelectionListener);

 		this.controller.onNewValue((value) -> {
 			if (value == null) {
 				return;
 			}
 			this.setListValue(value);
 		});

 		this.actionButtons.forEach(actionButton -> {
 			SelectionListener selectionListener = SWTUtils.widgetSelectedAdapter((event) -> {
 				if (!this.container.isRenderingInProgress()) {
 					List<Object> selections = new ArrayList<Object>();
 					IStructuredSelection structuredSelection = (IStructuredSelection) tableViewer.getSelection();
 					for (Object selection : structuredSelection.toList()) {
 						selections.add(selection);
 					}
 					IStatus result = controller.action(actionButton.getAction(), selections);
 					if (result != null && result.getSeverity() == IStatus.ERROR) {
 						EEFIdeUiPlugin.INSTANCE.log(result);
 					} else {
 						refresh();
 					}
 				}
 			});

 			actionButton.addSelectionListener(selectionListener);
 		});
 	}

 	/**
 	 * Set the value of the list.
 	 *
 	 * @param value
 	 *            Value to select
 	 */
 	private void setListValue(Object value) {
 		if (!this.tableViewer.getTable().isDisposed()) {
 			final ISelection selection = new StructuredSelection(value);
 			tableViewer.setSelection(selection);

 			List<Object> values = new ArrayList<Object>();
 			if (value instanceof Iterable<?>) {
 				for (Object val : (Iterable<?>) value) {
 					values.add(val);
 				}
 			} else {
 				values.add(value);
 			}
 			tableViewer.setInput(values.toArray());
 		}
 	}

 	/**
 	 * {@inheritDoc}
 	 *
 	 * @see org.eclipse.eef.ide.ui.api.widgets.AbstractEEFWidgetLifecycleManager#setEnabled(boolean)
 	 */
 	@Override
 	protected void setEnabled(boolean isEnabled) {
 		if (this.tableViewer != null && this.tableViewer.getTable() != null && !this.tableViewer.getTable().isDisposed()) {
 			this.tableViewer.getTable().setBackground(this.getBackgroundColor(isEnabled));
 			this.tableViewer.getTable().setEnabled(isEnabled);
 		}
 		this.actionButtons.stream().filter(actionButton -> !actionButton.getButton().isDisposed())
 				.forEach(actionButton -> actionButton.setEnabled(isEnabled));
 	}

 	/**
 	 * Get the background color according to the current valid style.
 	 *
 	 * @param isEnabled
 	 *            <code>true</code> if the widget is enabled, <code>false</code> otherwise
 	 *
 	 * @return The background color to use in the text field.
 	 */
 	private Color getBackgroundColor(boolean isEnabled) {
 		Color color = defaultBackgroundColor;
 		if (!isEnabled) {
 			color = widgetFactory.getColors().getInactiveBackground();
 		}
 		return color;
 	}

 	/**
 	 * {@inheritDoc}
 	 *
 	 * @see org.eclipse.eef.ide.ui.api.widgets.AbstractEEFWidgetLifecycleManager#aboutToBeHidden()
 	 */
 	@Override
 	public void aboutToBeHidden() {
 		super.aboutToBeHidden();

 		this.actionButtons.forEach(ActionButton::removeSelectionListener);

 		if (this.tableViewer != null && this.tableViewer.getTable() != null && !this.tableViewer.getTable().isDisposed()) {
 			this.tableViewer.getTable().removeSelectionListener(this.tableSelectionListener);
 		}
 		this.controller.removeNewValueConsumer();
 	}

 	/**
 	 * {@inheritDoc}
 	 *
 	 * @see org.eclipse.eef.ide.ui.api.widgets.AbstractEEFWidgetLifecycleManager#getController()
 	 */
 	@Override
 	protected IEEFWidgetController getController() {
 		return this.controller;
 	}

 	/**
 	 * {@inheritDoc}
 	 *
 	 * @see org.eclipse.eef.ide.ui.api.widgets.AbstractEEFWidgetLifecycleManager#getWidgetDescription()
 	 */
 	@Override
 	protected EEFWidgetDescription getWidgetDescription() {
 		return this.description;
 	}

 	/**
 	 * {@inheritDoc}
 	 *
 	 * @see org.eclipse.eef.ide.ui.api.widgets.AbstractEEFLifecycleManager#getValidationControl()
 	 */
 	@Override
 	protected Control getValidationControl() {
 		return this.tableViewer.getTable().getParent();
 	}

 	/**
 	 * {@inheritDoc}
 	 *
 	 * @see org.eclipse.eef.ide.ui.api.widgets.AbstractEEFWidgetLifecycleManager#dispose()
 	 */
 	@Override
 	public void dispose() {
 		super.dispose();
 		this.actionButtons.clear();
 	}
 }
	/*******************************************************************************
	* Copyright (c) 2016, 2017 Obeo.
	* 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:
	* Obeo - initial API and implementation
	*******************************************************************************/
	package org.eclipse.eef.ide.ui.internal.widgets;

	import java.util.ArrayList;
	import java.util.List;

	import org.eclipse.core.runtime.IStatus;
	import org.eclipse.eef.EEFListDescription;
	import org.eclipse.eef.EEFWidgetAction;
	import org.eclipse.eef.EEFWidgetDescription;
	import org.eclipse.eef.common.ui.api.EEFWidgetFactory;
	import org.eclipse.eef.common.ui.api.IEEFFormContainer;
	import org.eclipse.eef.common.ui.api.SWTUtils;
	import org.eclipse.eef.core.api.EditingContextAdapter;
	import org.eclipse.eef.core.api.controllers.EEFControllersFactory;
	import org.eclipse.eef.core.api.controllers.IEEFListController;
	import org.eclipse.eef.core.api.controllers.IEEFWidgetController;
	import org.eclipse.eef.ide.ui.api.widgets.AbstractEEFWidgetLifecycleManager;
	import org.eclipse.eef.ide.ui.internal.EEFIdeUiPlugin;
	import org.eclipse.jface.viewers.ArrayContentProvider;
	import org.eclipse.jface.viewers.ISelection;
	import org.eclipse.jface.viewers.IStructuredSelection;
	import org.eclipse.jface.viewers.StructuredSelection;
	import org.eclipse.jface.viewers.TableViewer;
	import org.eclipse.sirius.common.interpreter.api.IInterpreter;
	import org.eclipse.sirius.common.interpreter.api.IVariableManager;
	import org.eclipse.swt.SWT;
	import org.eclipse.swt.custom.ScrolledComposite;
	import org.eclipse.swt.events.SelectionListener;
	import org.eclipse.swt.graphics.Color;
	import org.eclipse.swt.layout.GridData;
	import org.eclipse.swt.layout.GridLayout;
	import org.eclipse.swt.widgets.Composite;
	import org.eclipse.swt.widgets.Control;
	import org.eclipse.swt.widgets.Table;

	/**
	* This class will be used in order to manager the lifecycle of a list widget.
	*
	* @author sbegaudeau
	*/
	public class EEFListLifecycleManager extends AbstractEEFWidgetLifecycleManager {
	/**
	* Default height.
	*/
	private static final int DEFAULT_HEIGHT = 34;

	/**
	* Minimal height of the table widget.
	*/
	private static final int TABLE_MINIMAL_HEIGHT = 100;

	/**
	* The description.
	*/
	private EEFListDescription description;

	/**
	* The widget factory.
	*/
	private EEFWidgetFactory widgetFactory;

	/**
	* The action buttons.
	*/
	private List<ActionButton> actionButtons = new ArrayList<ActionButton>();

	/**
	* The default background color of the text field.
	*/
	private Color defaultBackgroundColor;

	/**
	* The controller.
	*/
	private IEEFListController controller;

	/**
	* The table viewer used to display the list.
	*/
	private TableViewer tableViewer;

	/**
	* The listener used to run the onClick expression when the user will click on the table.
	*/
	private SelectionListener tableSelectionListener;

	/**
	* The constructor.
	*
	* @param description
	* The description
	* @param variableManager
	* The variable manager
	* @param interpreter
	* The interpreter
	* @param editingContextAdapter
	* The editing context adapter
	*/
	public EEFListLifecycleManager(EEFListDescription description, IVariableManager variableManager, IInterpreter interpreter,
	EditingContextAdapter editingContextAdapter) {
	super(variableManager, interpreter, editingContextAdapter);
	this.description = description;
	}

	/**
	* {@inheritDoc}
	*
	* @see org.eclipse.eef.ide.ui.api.widgets.AbstractEEFWidgetLifecycleManager#createMainControl(org.eclipse.swt.widgets.Composite,
	* org.eclipse.eef.common.ui.api.IEEFFormContainer)
	*/
	@Override
	protected void createMainControl(Composite parent, IEEFFormContainer formContainer) {
	widgetFactory = formContainer.getWidgetFactory();
	defaultBackgroundColor = parent.getBackground();

	// this is the parent composite
	Composite list = widgetFactory.createFlatFormComposite(parent);
	GridLayout layout = new GridLayout(2, false);
	list.setLayout(layout);

	GridData gridData = new GridData(SWT.FILL, SWT.CENTER, true, false);
	list.setLayoutData(gridData);

	this.createListWidget(list);
	this.createWidgetActionButtons(list);

	widgetFactory.paintBordersFor(parent);

	this.controller = new EEFControllersFactory().createListController(this.description, this.variableManager, this.interpreter,
	this.editingContextAdapter);
	}

	/**
	* Create table widget.
	*
	* @param parent
	* The parent composite
	*/
	private void createListWidget(Composite parent) {
	ScrolledComposite scrolledComposite = widgetFactory.createScrolledComposite(parent, SWT.NONE);
	GridData gridData = new GridData();
	gridData.grabExcessHorizontalSpace = true;
	gridData.horizontalAlignment = SWT.FILL;
	scrolledComposite.setLayoutData(gridData);

	// CHECKSTYLE:OFF
	int style = SWT.READ_ONLY \| SWT.V_SCROLL \| SWT.FULL_SELECTION \| SWT.BORDER \| SWT.MULTI \| SWT.VIRTUAL;
	// CHECKSTYLE:ON

	Table table = widgetFactory.createTable(scrolledComposite, style);
	this.tableViewer = new TableViewer(table);

	GridData tableGridData = new GridData(SWT.FILL, SWT.TOP, true, false, 1, 1);
	tableGridData.horizontalIndent = VALIDATION_MARKER_OFFSET;
	this.tableViewer.getTable().setLayoutData(tableGridData);

	this.tableViewer.setContentProvider(ArrayContentProvider.getInstance());
	this.tableViewer.setLabelProvider(new EEFListTableLabelProvider(this.description, this.interpreter, this.variableManager));

	scrolledComposite.setContent(table);

	int widgetHeight = DEFAULT_HEIGHT;
	List<EEFWidgetAction> actions = description.getActions();
	if (actions != null && actions.size() > 0) {
	widgetHeight = widgetHeight * (actions.size() + 1);
	}

	final int clientWidth = scrolledComposite.getClientArea().width;
	this.tableViewer.getTable().setSize(clientWidth, Math.max(TABLE_MINIMAL_HEIGHT, widgetHeight));

	scrolledComposite.setExpandHorizontal(true);
	scrolledComposite.setAlwaysShowScrollBars(true);
	}

	/**
	* Create widget action buttons.
	*
	* @param parent
	* The parent composite
	*/
	private void createWidgetActionButtons(Composite parent) {
	Composite buttons = widgetFactory.createFlatFormComposite(parent);

	GridData gridData = new GridData();
	gridData.verticalAlignment = SWT.BEGINNING;
	buttons.setLayoutData(gridData);

	buttons.setLayout(new GridLayout(1, false));

	// Buttons are visible only if an action is defined
	for (EEFWidgetAction action : this.description.getActions()) {
	ActionButton actionButton = new ActionButton(action, buttons, widgetFactory, this.interpreter, this.variableManager);
	actionButtons.add(actionButton);
	}

	}

	/**
	* {@inheritDoc}
	*
	* @see org.eclipse.eef.ide.ui.api.widgets.AbstractEEFWidgetLifecycleManager#aboutToBeShown()
	*/
	@Override
	public void aboutToBeShown() {
	super.aboutToBeShown();

	this.tableSelectionListener = new EEFListSelectionListener(this.controller);
	this.tableViewer.getTable().addSelectionListener(tableSelectionListener);

	this.controller.onNewValue((value) -> {
	if (value == null) {
	return;
	}
	this.setListValue(value);
	});

	this.actionButtons.forEach(actionButton -> {
	SelectionListener selectionListener = SWTUtils.widgetSelectedAdapter((event) -> {
	if (!this.container.isRenderingInProgress()) {
	List<Object> selections = new ArrayList<Object>();
	IStructuredSelection structuredSelection = (IStructuredSelection) tableViewer.getSelection();
	for (Object selection : structuredSelection.toList()) {
	selections.add(selection);
	}
	IStatus result = controller.action(actionButton.getAction(), selections);
	if (result != null && result.getSeverity() == IStatus.ERROR) {
	EEFIdeUiPlugin.INSTANCE.log(result);
	} else {
	refresh();
	}
	}
	});

	actionButton.addSelectionListener(selectionListener);
	});
	}

	/**
	* Set the value of the list.
	*
	* @param value
	* Value to select
	*/
	private void setListValue(Object value) {
	if (!this.tableViewer.getTable().isDisposed()) {
	final ISelection selection = new StructuredSelection(value);
	tableViewer.setSelection(selection);

	List<Object> values = new ArrayList<Object>();
	if (value instanceof Iterable<?>) {
	for (Object val : (Iterable<?>) value) {
	values.add(val);
	}
	} else {
	values.add(value);
	}
	tableViewer.setInput(values.toArray());
	}
	}

	/**
	* {@inheritDoc}
	*
	* @see org.eclipse.eef.ide.ui.api.widgets.AbstractEEFWidgetLifecycleManager#setEnabled(boolean)
	*/
	@Override
	protected void setEnabled(boolean isEnabled) {
	if (this.tableViewer != null && this.tableViewer.getTable() != null && !this.tableViewer.getTable().isDisposed()) {
	this.tableViewer.getTable().setBackground(this.getBackgroundColor(isEnabled));
	this.tableViewer.getTable().setEnabled(isEnabled);
	}
	this.actionButtons.stream().filter(actionButton -> !actionButton.getButton().isDisposed())
	.forEach(actionButton -> actionButton.setEnabled(isEnabled));
	}

	/**
	* Get the background color according to the current valid style.
	*
	* @param isEnabled
	* <code>true</code> if the widget is enabled, <code>false</code> otherwise
	*
	* @return The background color to use in the text field.
	*/
	private Color getBackgroundColor(boolean isEnabled) {
	Color color = defaultBackgroundColor;
	if (!isEnabled) {
	color = widgetFactory.getColors().getInactiveBackground();
	}
	return color;
	}

	/**
	* {@inheritDoc}
	*
	* @see org.eclipse.eef.ide.ui.api.widgets.AbstractEEFWidgetLifecycleManager#aboutToBeHidden()
	*/
	@Override
	public void aboutToBeHidden() {
	super.aboutToBeHidden();

	this.actionButtons.forEach(ActionButton::removeSelectionListener);

	if (this.tableViewer != null && this.tableViewer.getTable() != null && !this.tableViewer.getTable().isDisposed()) {
	this.tableViewer.getTable().removeSelectionListener(this.tableSelectionListener);
	}
	this.controller.removeNewValueConsumer();
	}

	/**
	* {@inheritDoc}
	*
	* @see org.eclipse.eef.ide.ui.api.widgets.AbstractEEFWidgetLifecycleManager#getController()
	*/
	@Override
	protected IEEFWidgetController getController() {
	return this.controller;
	}

	/**
	* {@inheritDoc}
	*
	* @see org.eclipse.eef.ide.ui.api.widgets.AbstractEEFWidgetLifecycleManager#getWidgetDescription()
	*/
	@Override
	protected EEFWidgetDescription getWidgetDescription() {
	return this.description;
	}

	/**
	* {@inheritDoc}
	*
	* @see org.eclipse.eef.ide.ui.api.widgets.AbstractEEFLifecycleManager#getValidationControl()
	*/
	@Override
	protected Control getValidationControl() {
	return this.tableViewer.getTable().getParent();
	}

	/**
	* {@inheritDoc}
	*
	* @see org.eclipse.eef.ide.ui.api.widgets.AbstractEEFWidgetLifecycleManager#dispose()
	*/
	@Override
	public void dispose() {
	super.dispose();
	this.actionButtons.clear();
	}
	}