jsf/plugins/org.eclipse.jst.jsf.facesconfig.ui/src/org/eclipse/jst/jsf/facesconfig/ui/section/FacetSection.java - jsf/webtools.jsf - Git at Google

 /*******************************************************************************
  * Copyright (c) 2004, 2006 Sybase, Inc. and others.
  *
  * 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:
  *     Sybase, Inc. - initial API and implementation
  *******************************************************************************/
 package org.eclipse.jst.jsf.facesconfig.ui.section;

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

 import org.eclipse.core.runtime.Assert;
 import org.eclipse.emf.common.command.Command;
 import org.eclipse.emf.common.command.CompoundCommand;
 import org.eclipse.emf.edit.command.AddCommand;
 import org.eclipse.emf.edit.command.RemoveCommand;
 import org.eclipse.emf.edit.command.SetCommand;
 import org.eclipse.emf.edit.ui.provider.AdapterFactoryContentProvider;
 import org.eclipse.emf.edit.ui.provider.AdapterFactoryLabelProvider;
 import org.eclipse.jface.dialogs.Dialog;
 import org.eclipse.jface.viewers.ColumnWeightData;
 import org.eclipse.jface.viewers.ISelection;
 import org.eclipse.jface.viewers.IStructuredSelection;
 import org.eclipse.jface.viewers.TableLayout;
 import org.eclipse.jface.viewers.TableViewer;
 import org.eclipse.jface.viewers.Viewer;
 import org.eclipse.jface.viewers.ViewerFilter;
 import org.eclipse.jst.jsf.facesconfig.emf.DescriptionType;
 import org.eclipse.jst.jsf.facesconfig.emf.DisplayNameType;
 import org.eclipse.jst.jsf.facesconfig.emf.FacesConfigFactory;
 import org.eclipse.jst.jsf.facesconfig.emf.FacesConfigPackage;
 import org.eclipse.jst.jsf.facesconfig.emf.FacetNameType;
 import org.eclipse.jst.jsf.facesconfig.emf.FacetType;
 import org.eclipse.jst.jsf.facesconfig.ui.EditorPlugin;
 import org.eclipse.jst.jsf.facesconfig.ui.EditorMessages;
 import org.eclipse.jst.jsf.facesconfig.ui.dialog.AddEditFacetDialog;
 import org.eclipse.jst.jsf.facesconfig.ui.page.IFacesConfigPage;
 import org.eclipse.swt.SWT;
 import org.eclipse.swt.events.MouseAdapter;
 import org.eclipse.swt.events.MouseEvent;
 import org.eclipse.swt.events.SelectionAdapter;
 import org.eclipse.swt.events.SelectionEvent;
 import org.eclipse.swt.layout.GridData;
 import org.eclipse.swt.layout.GridLayout;
 import org.eclipse.swt.widgets.Button;
 import org.eclipse.swt.widgets.Composite;
 import org.eclipse.swt.widgets.Shell;
 import org.eclipse.swt.widgets.Table;
 import org.eclipse.swt.widgets.TableColumn;
 import org.eclipse.ui.forms.IManagedForm;
 import org.eclipse.ui.forms.widgets.FormToolkit;

 /**
  * Section for facets
  *
  */
 public class FacetSection extends AbstractFacesConfigSection {

 	private static final int TABLE_DEFAULT_HEIGHT = 160;

 	private TableViewer tableViewer;

 	private Button removeButton;

 	private Button editButton;

 	/**
 	 *
 	 * @param parent
 	 * @param managedForm
 	 * @param page
 	 * @param toolkit
 	 */
 	public FacetSection(Composite parent, IManagedForm managedForm,
 			IFacesConfigPage page, FormToolkit toolkit) {
 		super(parent, managedForm, page, toolkit, null, null);
 		this.getSection().setText(EditorMessages.FacetSection_Name);
 		this.getSection().setDescription(
 				EditorMessages.FacetSection_Description);

 	}

 	/**
 	 *
 	 */
 	protected void createContents(Composite container, FormToolkit toolkit) {
 		GridLayout gl = new GridLayout();
 		gl.horizontalSpacing = 0;
 		gl.marginWidth = 0;
 		gl.numColumns = 2;
 		container.setLayout(gl);
 		GridData td = new GridData(GridData.FILL_BOTH);
 		container.setLayoutData(td);

 		toolkit.paintBordersFor(container);

 		Composite facetSection = toolkit.createComposite(container);
 		GridLayout gl2 = new GridLayout();
 		gl2.horizontalSpacing = 0;
 		gl2.marginWidth = 0;
 		gl2.numColumns = 2;
 		facetSection.setLayout(gl2);
 		GridData gd = new GridData(GridData.FILL_BOTH
 				| GridData.VERTICAL_ALIGN_BEGINNING);
 		facetSection.setLayoutData(gd);

 		createTableSection(facetSection, toolkit);
 		createButtonsSection(facetSection, toolkit);

 	}

 	/**
 	 * create facet table section
 	 *
 	 * @param container
 	 * @param toolkit
 	 */
 	private void createTableSection(Composite container, FormToolkit toolkit) {
 		Composite tableContainer = toolkit.createComposite(container);
 		GridData gd = new GridData(GridData.FILL_BOTH
 				| GridData.GRAB_HORIZONTAL);
 		tableContainer.setLayoutData(gd);
 		toolkit.paintBordersFor(tableContainer);

 		GridLayout gl = new GridLayout();
 		tableContainer.setLayout(gl);

 		Table table = new Table(tableContainer, SWT.H_SCROLL | SWT.V_SCROLL
 				| SWT.FULL_SELECTION | SWT.BORDER);
 		gd = new GridData(GridData.FILL_BOTH);
 		gd.horizontalSpan = 1;
 		gd.heightHint = TABLE_DEFAULT_HEIGHT;
 		table.setLayoutData(gd);

 		table.setHeaderVisible(true);
 		table.setLinesVisible(true);
 		TableLayout layout = new TableLayout();
 		table.setLayout(layout);

 		TableColumn facetNameCol = new TableColumn(table, SWT.NONE);
 		layout.addColumnData(new ColumnWeightData(1, true));
 		facetNameCol
 				.setText(EditorMessages.FacetSection_Table_FacetNameColumn);
 		TableColumn displayNameCol = new TableColumn(table, SWT.NONE);
 		layout.addColumnData(new ColumnWeightData(1, true));
 		displayNameCol
 				.setText(EditorMessages.FacetSection_Table_DisplayNameColumn);

 		TableColumn descriptionCol = new TableColumn(table, SWT.NONE);
 		layout.addColumnData(new ColumnWeightData(1, true));
 		descriptionCol
 				.setText(EditorMessages.FacetSection_Table_DescriptionColumn);

 		table.addSelectionListener(new SelectionAdapter() {
 			public void widgetSelected(SelectionEvent e) {
 				updateButtons();
 			}
 		});

 		table.addMouseListener(new MouseAdapter() {
 			public void mouseDoubleClick(MouseEvent e) {
 				if (((IStructuredSelection) tableViewer.getSelection()).size() > 0)
 					editButtonSelected();
 			}
 		});

 		tableViewer = new TableViewer(table);
 		tableViewer.setContentProvider(new AdapterFactoryContentProvider(
 				getAdapterFactory()));
 		tableViewer.setLabelProvider(new AdapterFactoryLabelProvider(
 				getAdapterFactory()));

 		tableViewer.addFilter(new ViewerFilter() {
 			public boolean select(Viewer viewer, Object parentElement,
 					Object element) {
 				return FacesConfigPackage.eINSTANCE.getFacetType().isInstance(
 						element);
 			}
 		});

 		tableViewer.addSelectionChangedListener(this);
 	}

 	/**
 	 * create buttons
 	 *
 	 * @param container
 	 * @param toolkit
 	 */
 	private void createButtonsSection(Composite container, FormToolkit toolkit) {
 		// create operation buttons's container
 		Composite operationContainer = toolkit.createComposite(container);
 		GridData gd = new GridData(GridData.FILL_VERTICAL
 				| GridData.VERTICAL_ALIGN_BEGINNING);
 		operationContainer.setLayoutData(gd);
 		GridLayout gl = new GridLayout();
 		operationContainer.setLayout(gl);

 		Button addButton = toolkit.createButton(operationContainer,
 				EditorMessages.UI_Button_Add_more,
 				SWT.PUSH);
 		gd = new GridData(GridData.FILL_HORIZONTAL
 				| GridData.VERTICAL_ALIGN_BEGINNING);
 		gd.grabExcessHorizontalSpace = false;
 		addButton.setLayoutData(gd);

 		editButton = toolkit.createButton(operationContainer,
 				EditorMessages.UI_Button_Edit_more,
 				SWT.PUSH);
 		gd = new GridData(GridData.FILL_HORIZONTAL
 				| GridData.VERTICAL_ALIGN_BEGINNING);
 		gd.grabExcessHorizontalSpace = false;
 		editButton.setLayoutData(gd);

 		removeButton = toolkit.createButton(operationContainer,
 				EditorMessages.UI_Button_Remove,
 				SWT.PUSH);
 		gd = new GridData(GridData.FILL_HORIZONTAL
 				| GridData.VERTICAL_ALIGN_BEGINNING);
 		gd.grabExcessHorizontalSpace = false;
 		removeButton.setLayoutData(gd);

 		addButton.addSelectionListener(new SelectionAdapter() {

 			public void widgetSelected(SelectionEvent e) {
 				addButtonSelected();
 			}
 		});

 		editButton.addSelectionListener(new SelectionAdapter() {

 			public void widgetSelected(SelectionEvent e) {
 				editButtonSelected();
 			}
 		});
 		removeButton.addSelectionListener(new SelectionAdapter() {

 			public void widgetSelected(SelectionEvent e) {
 				removeButtonSelected();
 			}
 		});
 	}

 	/**
 	 * refresh the table viewer and update buttons.
 	 */
 	public void refresh() {
 		super.refresh();
 		tableViewer.refresh();
 		updateButtons();
 	}

 	public void refreshAll() {
 		tableViewer.setInput(getInput());
 		updateButtons();
 	}

 	/**
 	 * Update the buttons' enable status.
 	 */
 	private void updateButtons() {
 		if (((IStructuredSelection) tableViewer.getSelection()).size() > 0) {
 			editButton.setEnabled(true);
 			removeButton.setEnabled(true);
 		} else {
 			editButton.setEnabled(false);
 			removeButton.setEnabled(false);
 		}
 	}

 	/**
 	 * add a facet.
 	 *
 	 */
 	private void addButtonSelected() {

 		Shell shell = EditorPlugin.getActiveShell();

 		AddEditFacetDialog dialog = new AddEditFacetDialog(shell, true);
 		if (dialog.open() == Dialog.OK) {

 			String newFacetName = dialog.getFacetName();
 			String newDisplayName = dialog.getDisplayName();
 			String newDescription = dialog.getDescription();

 			FacetType newFacet = FacesConfigFactory.eINSTANCE.createFacetType();
 			if (newFacetName.length() > 0) {
 				FacetNameType facetNameType = FacesConfigFactory.eINSTANCE
 						.createFacetNameType();
 				facetNameType.setTextContent(newFacetName);
 				newFacet.setFacetName(facetNameType);
 			}

 			if (newDisplayName.length() > 0) {
 				DisplayNameType displayNameType = FacesConfigFactory.eINSTANCE
 						.createDisplayNameType();
 				displayNameType.setTextContent(newDisplayName);
 				newFacet.getDisplayName().add(displayNameType);
 			}

 			if (newDescription.length() > 0) {
 				DescriptionType descriptionType = FacesConfigFactory.eINSTANCE
 						.createDescriptionType();
 				descriptionType.setTextContent(newDescription);
 				newFacet.getDescription().add(descriptionType);
 			}

 			Command addCommand = AddCommand.create(this.getEditingDomain(),
 					getInput(), FacesConfigPackage.eINSTANCE
 							.getComponentType_Facet(), newFacet);
 			if (addCommand.canExecute()) {
 				this.getEditingDomain().getCommandStack().execute(addCommand);

 			}
 		}

 	}

 	/**
 	 * edit a facet.
 	 *
 	 */
 	private void editButtonSelected() {
 		FacetType facet = (FacetType) ((IStructuredSelection) tableViewer
 				.getSelection()).getFirstElement();

 		Assert.isNotNull(facet);

 		Shell shell = EditorPlugin.getActiveShell();

 		AddEditFacetDialog dialog = new AddEditFacetDialog(shell, false);
 		if (facet.getFacetName() != null)
 			dialog.setFacetName(facet.getFacetName().getTextContent());

 		if (facet.getDisplayName().size() > 0) {
 			dialog.setDisplayName(((DisplayNameType) facet.getDisplayName()
 					.get(0)).getTextContent());
 		}

 		if (facet.getDescription().size() > 0) {
 			dialog.setDescription(((DescriptionType) facet.getDescription()
 					.get(0)).getTextContent());
 		}

 		if (dialog.open() == Dialog.OK) {
 			List commands = new ArrayList(3);

 			String newFacetName = dialog.getFacetName();
 			String newDisplayName = dialog.getDisplayName();
 			String newDescription = dialog.getDescription();
 			if (facet.getFacetName() != null) {
 				Command cmd1 = SetCommand.create(getEditingDomain(), facet
 						.getFacetName(), FacesConfigPackage.eINSTANCE
 						.getFacetNameType_TextContent(), newFacetName);
 				commands.add(cmd1);
 			} else if (newFacetName.length() > 0) {
 				FacetNameType newFacetNameType = FacesConfigFactory.eINSTANCE
 						.createFacetNameType();
 				newFacetNameType.setTextContent(newFacetName);
 				Command cmd2 = AddCommand.create(getEditingDomain(), facet,
 						FacesConfigPackage.eINSTANCE.getFacetType_FacetName(),
 						newFacetNameType);
 				commands.add(cmd2);
 			}

 			if (facet.getDisplayName().size() > 0) {
 				DisplayNameType displayNameType = (DisplayNameType) facet
 						.getDisplayName().get(0);
 				Command cmd3 = SetCommand.create(this.getEditingDomain(),
 						displayNameType, FacesConfigPackage.eINSTANCE
 								.getDisplayNameType_TextContent(),
 						newDisplayName);
 				commands.add(cmd3);
 			} else if (newDisplayName.length() > 0) {
 				DisplayNameType newDisplayNameType = FacesConfigFactory.eINSTANCE
 						.createDisplayNameType();
 				newDisplayNameType.setTextContent(newDisplayName);
 				Command cmd4 = AddCommand
 						.create(this.getEditingDomain(), facet,
 								FacesConfigPackage.eINSTANCE
 										.getFacetType_DisplayName(),
 								newDisplayNameType);
 				commands.add(cmd4);
 			}

 			if (facet.getDescription().size() > 0) {
 				DescriptionType descriptionType = (DescriptionType) facet
 						.getDescription().get(0);
 				Command cmd5 = SetCommand.create(this.getEditingDomain(),
 						descriptionType, FacesConfigPackage.eINSTANCE
 								.getDescriptionType_TextContent(),
 						newDescription);
 				commands.add(cmd5);
 			} else if (newDescription.length() > 0) {
 				DescriptionType newDescriptionType = FacesConfigFactory.eINSTANCE
 						.createDescriptionType();
 				newDescriptionType.setTextContent(newDescription);
 				Command cmd6 = AddCommand
 						.create(this.getEditingDomain(), facet,
 								FacesConfigPackage.eINSTANCE
 										.getFacetType_Description(),
 								newDescriptionType);
 				commands.add(cmd6);
 			}

 			CompoundCommand command = new CompoundCommand(commands);
 			if (command.canExecute()) {
 				getEditingDomain().getCommandStack().execute(command);
 				tableViewer.refresh(facet);
 			}
 		}

 	}

 	/**
 	 * remove a facet.
 	 *
 	 */
 	private void removeButtonSelected() {
 		FacetType facet = (FacetType) ((IStructuredSelection) tableViewer
 				.getSelection()).getFirstElement();

 		Assert.isNotNull(facet);
 		Command removeCommand = RemoveCommand.create(this.getEditingDomain(),
 				getInput(), FacesConfigPackage.eINSTANCE
 						.getComponentType_Facet(), facet);

 		if (removeCommand.canExecute()) {
 			this.getEditingDomain().getCommandStack().execute(removeCommand);
 			refreshAll();
 		}

 	}

 	/* (non-Javadoc)
 	 * @see org.eclipse.jface.viewers.ISelectionProvider#getSelection()
 	 */
 	public ISelection getSelection() {
 		return tableViewer.getSelection();
 	}


 	/* (non-Javadoc)
 	 * @see org.eclipse.jface.viewers.ISelectionProvider#setSelection(org.eclipse.jface.viewers.ISelection)
 	 */
 	public void setSelection(ISelection selection) {

 		tableViewer.setSelection(selection);
 	}
 }
	/*******************************************************************************
	* Copyright (c) 2004, 2006 Sybase, Inc. and others.
	*
	* 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:
	* Sybase, Inc. - initial API and implementation
	*******************************************************************************/
	package org.eclipse.jst.jsf.facesconfig.ui.section;

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

	import org.eclipse.core.runtime.Assert;
	import org.eclipse.emf.common.command.Command;
	import org.eclipse.emf.common.command.CompoundCommand;
	import org.eclipse.emf.edit.command.AddCommand;
	import org.eclipse.emf.edit.command.RemoveCommand;
	import org.eclipse.emf.edit.command.SetCommand;
	import org.eclipse.emf.edit.ui.provider.AdapterFactoryContentProvider;
	import org.eclipse.emf.edit.ui.provider.AdapterFactoryLabelProvider;
	import org.eclipse.jface.dialogs.Dialog;
	import org.eclipse.jface.viewers.ColumnWeightData;
	import org.eclipse.jface.viewers.ISelection;
	import org.eclipse.jface.viewers.IStructuredSelection;
	import org.eclipse.jface.viewers.TableLayout;
	import org.eclipse.jface.viewers.TableViewer;
	import org.eclipse.jface.viewers.Viewer;
	import org.eclipse.jface.viewers.ViewerFilter;
	import org.eclipse.jst.jsf.facesconfig.emf.DescriptionType;
	import org.eclipse.jst.jsf.facesconfig.emf.DisplayNameType;
	import org.eclipse.jst.jsf.facesconfig.emf.FacesConfigFactory;
	import org.eclipse.jst.jsf.facesconfig.emf.FacesConfigPackage;
	import org.eclipse.jst.jsf.facesconfig.emf.FacetNameType;
	import org.eclipse.jst.jsf.facesconfig.emf.FacetType;
	import org.eclipse.jst.jsf.facesconfig.ui.EditorPlugin;
	import org.eclipse.jst.jsf.facesconfig.ui.EditorMessages;
	import org.eclipse.jst.jsf.facesconfig.ui.dialog.AddEditFacetDialog;
	import org.eclipse.jst.jsf.facesconfig.ui.page.IFacesConfigPage;
	import org.eclipse.swt.SWT;
	import org.eclipse.swt.events.MouseAdapter;
	import org.eclipse.swt.events.MouseEvent;
	import org.eclipse.swt.events.SelectionAdapter;
	import org.eclipse.swt.events.SelectionEvent;
	import org.eclipse.swt.layout.GridData;
	import org.eclipse.swt.layout.GridLayout;
	import org.eclipse.swt.widgets.Button;
	import org.eclipse.swt.widgets.Composite;
	import org.eclipse.swt.widgets.Shell;
	import org.eclipse.swt.widgets.Table;
	import org.eclipse.swt.widgets.TableColumn;
	import org.eclipse.ui.forms.IManagedForm;
	import org.eclipse.ui.forms.widgets.FormToolkit;

	/**
	* Section for facets
	*
	*/
	public class FacetSection extends AbstractFacesConfigSection {

	private static final int TABLE_DEFAULT_HEIGHT = 160;

	private TableViewer tableViewer;

	private Button removeButton;

	private Button editButton;

	/**
	*
	* @param parent
	* @param managedForm
	* @param page
	* @param toolkit
	*/
	public FacetSection(Composite parent, IManagedForm managedForm,
	IFacesConfigPage page, FormToolkit toolkit) {
	super(parent, managedForm, page, toolkit, null, null);
	this.getSection().setText(EditorMessages.FacetSection_Name);
	this.getSection().setDescription(
	EditorMessages.FacetSection_Description);

	}

	/**
	*
	*/
	protected void createContents(Composite container, FormToolkit toolkit) {
	GridLayout gl = new GridLayout();
	gl.horizontalSpacing = 0;
	gl.marginWidth = 0;
	gl.numColumns = 2;
	container.setLayout(gl);
	GridData td = new GridData(GridData.FILL_BOTH);
	container.setLayoutData(td);

	toolkit.paintBordersFor(container);

	Composite facetSection = toolkit.createComposite(container);
	GridLayout gl2 = new GridLayout();
	gl2.horizontalSpacing = 0;
	gl2.marginWidth = 0;
	gl2.numColumns = 2;
	facetSection.setLayout(gl2);
	GridData gd = new GridData(GridData.FILL_BOTH
	\| GridData.VERTICAL_ALIGN_BEGINNING);
	facetSection.setLayoutData(gd);

	createTableSection(facetSection, toolkit);
	createButtonsSection(facetSection, toolkit);

	}

	/**
	* create facet table section
	*
	* @param container
	* @param toolkit
	*/
	private void createTableSection(Composite container, FormToolkit toolkit) {
	Composite tableContainer = toolkit.createComposite(container);
	GridData gd = new GridData(GridData.FILL_BOTH
	\| GridData.GRAB_HORIZONTAL);
	tableContainer.setLayoutData(gd);
	toolkit.paintBordersFor(tableContainer);

	GridLayout gl = new GridLayout();
	tableContainer.setLayout(gl);

	Table table = new Table(tableContainer, SWT.H_SCROLL \| SWT.V_SCROLL
	\| SWT.FULL_SELECTION \| SWT.BORDER);
	gd = new GridData(GridData.FILL_BOTH);
	gd.horizontalSpan = 1;
	gd.heightHint = TABLE_DEFAULT_HEIGHT;
	table.setLayoutData(gd);

	table.setHeaderVisible(true);
	table.setLinesVisible(true);
	TableLayout layout = new TableLayout();
	table.setLayout(layout);

	TableColumn facetNameCol = new TableColumn(table, SWT.NONE);
	layout.addColumnData(new ColumnWeightData(1, true));
	facetNameCol
	.setText(EditorMessages.FacetSection_Table_FacetNameColumn);
	TableColumn displayNameCol = new TableColumn(table, SWT.NONE);
	layout.addColumnData(new ColumnWeightData(1, true));
	displayNameCol
	.setText(EditorMessages.FacetSection_Table_DisplayNameColumn);

	TableColumn descriptionCol = new TableColumn(table, SWT.NONE);
	layout.addColumnData(new ColumnWeightData(1, true));
	descriptionCol
	.setText(EditorMessages.FacetSection_Table_DescriptionColumn);

	table.addSelectionListener(new SelectionAdapter() {
	public void widgetSelected(SelectionEvent e) {
	updateButtons();
	}
	});

	table.addMouseListener(new MouseAdapter() {
	public void mouseDoubleClick(MouseEvent e) {
	if (((IStructuredSelection) tableViewer.getSelection()).size() > 0)
	editButtonSelected();
	}
	});

	tableViewer = new TableViewer(table);
	tableViewer.setContentProvider(new AdapterFactoryContentProvider(
	getAdapterFactory()));
	tableViewer.setLabelProvider(new AdapterFactoryLabelProvider(
	getAdapterFactory()));

	tableViewer.addFilter(new ViewerFilter() {
	public boolean select(Viewer viewer, Object parentElement,
	Object element) {
	return FacesConfigPackage.eINSTANCE.getFacetType().isInstance(
	element);
	}
	});

	tableViewer.addSelectionChangedListener(this);
	}

	/**
	* create buttons
	*
	* @param container
	* @param toolkit
	*/
	private void createButtonsSection(Composite container, FormToolkit toolkit) {
	// create operation buttons's container
	Composite operationContainer = toolkit.createComposite(container);
	GridData gd = new GridData(GridData.FILL_VERTICAL
	\| GridData.VERTICAL_ALIGN_BEGINNING);
	operationContainer.setLayoutData(gd);
	GridLayout gl = new GridLayout();
	operationContainer.setLayout(gl);

	Button addButton = toolkit.createButton(operationContainer,
	EditorMessages.UI_Button_Add_more,
	SWT.PUSH);
	gd = new GridData(GridData.FILL_HORIZONTAL
	\| GridData.VERTICAL_ALIGN_BEGINNING);
	gd.grabExcessHorizontalSpace = false;
	addButton.setLayoutData(gd);

	editButton = toolkit.createButton(operationContainer,
	EditorMessages.UI_Button_Edit_more,
	SWT.PUSH);
	gd = new GridData(GridData.FILL_HORIZONTAL
	\| GridData.VERTICAL_ALIGN_BEGINNING);
	gd.grabExcessHorizontalSpace = false;
	editButton.setLayoutData(gd);

	removeButton = toolkit.createButton(operationContainer,
	EditorMessages.UI_Button_Remove,
	SWT.PUSH);
	gd = new GridData(GridData.FILL_HORIZONTAL
	\| GridData.VERTICAL_ALIGN_BEGINNING);
	gd.grabExcessHorizontalSpace = false;
	removeButton.setLayoutData(gd);

	addButton.addSelectionListener(new SelectionAdapter() {

	public void widgetSelected(SelectionEvent e) {
	addButtonSelected();
	}
	});

	editButton.addSelectionListener(new SelectionAdapter() {

	public void widgetSelected(SelectionEvent e) {
	editButtonSelected();
	}
	});
	removeButton.addSelectionListener(new SelectionAdapter() {

	public void widgetSelected(SelectionEvent e) {
	removeButtonSelected();
	}
	});
	}

	/**
	* refresh the table viewer and update buttons.
	*/
	public void refresh() {
	super.refresh();
	tableViewer.refresh();
	updateButtons();
	}

	public void refreshAll() {
	tableViewer.setInput(getInput());
	updateButtons();
	}

	/**
	* Update the buttons' enable status.
	*/
	private void updateButtons() {
	if (((IStructuredSelection) tableViewer.getSelection()).size() > 0) {
	editButton.setEnabled(true);
	removeButton.setEnabled(true);
	} else {
	editButton.setEnabled(false);
	removeButton.setEnabled(false);
	}
	}

	/**
	* add a facet.
	*
	*/
	private void addButtonSelected() {

	Shell shell = EditorPlugin.getActiveShell();

	AddEditFacetDialog dialog = new AddEditFacetDialog(shell, true);
	if (dialog.open() == Dialog.OK) {

	String newFacetName = dialog.getFacetName();
	String newDisplayName = dialog.getDisplayName();
	String newDescription = dialog.getDescription();

	FacetType newFacet = FacesConfigFactory.eINSTANCE.createFacetType();
	if (newFacetName.length() > 0) {
	FacetNameType facetNameType = FacesConfigFactory.eINSTANCE
	.createFacetNameType();
	facetNameType.setTextContent(newFacetName);
	newFacet.setFacetName(facetNameType);
	}

	if (newDisplayName.length() > 0) {
	DisplayNameType displayNameType = FacesConfigFactory.eINSTANCE
	.createDisplayNameType();
	displayNameType.setTextContent(newDisplayName);
	newFacet.getDisplayName().add(displayNameType);
	}

	if (newDescription.length() > 0) {
	DescriptionType descriptionType = FacesConfigFactory.eINSTANCE
	.createDescriptionType();
	descriptionType.setTextContent(newDescription);
	newFacet.getDescription().add(descriptionType);
	}

	Command addCommand = AddCommand.create(this.getEditingDomain(),
	getInput(), FacesConfigPackage.eINSTANCE
	.getComponentType_Facet(), newFacet);
	if (addCommand.canExecute()) {
	this.getEditingDomain().getCommandStack().execute(addCommand);

	}
	}

	}

	/**
	* edit a facet.
	*
	*/
	private void editButtonSelected() {
	FacetType facet = (FacetType) ((IStructuredSelection) tableViewer
	.getSelection()).getFirstElement();

	Assert.isNotNull(facet);

	Shell shell = EditorPlugin.getActiveShell();

	AddEditFacetDialog dialog = new AddEditFacetDialog(shell, false);
	if (facet.getFacetName() != null)
	dialog.setFacetName(facet.getFacetName().getTextContent());

	if (facet.getDisplayName().size() > 0) {
	dialog.setDisplayName(((DisplayNameType) facet.getDisplayName()
	.get(0)).getTextContent());
	}

	if (facet.getDescription().size() > 0) {
	dialog.setDescription(((DescriptionType) facet.getDescription()
	.get(0)).getTextContent());
	}

	if (dialog.open() == Dialog.OK) {
	List commands = new ArrayList(3);

	String newFacetName = dialog.getFacetName();
	String newDisplayName = dialog.getDisplayName();
	String newDescription = dialog.getDescription();
	if (facet.getFacetName() != null) {
	Command cmd1 = SetCommand.create(getEditingDomain(), facet
	.getFacetName(), FacesConfigPackage.eINSTANCE
	.getFacetNameType_TextContent(), newFacetName);
	commands.add(cmd1);
	} else if (newFacetName.length() > 0) {
	FacetNameType newFacetNameType = FacesConfigFactory.eINSTANCE
	.createFacetNameType();
	newFacetNameType.setTextContent(newFacetName);
	Command cmd2 = AddCommand.create(getEditingDomain(), facet,
	FacesConfigPackage.eINSTANCE.getFacetType_FacetName(),
	newFacetNameType);
	commands.add(cmd2);
	}

	if (facet.getDisplayName().size() > 0) {
	DisplayNameType displayNameType = (DisplayNameType) facet
	.getDisplayName().get(0);
	Command cmd3 = SetCommand.create(this.getEditingDomain(),
	displayNameType, FacesConfigPackage.eINSTANCE
	.getDisplayNameType_TextContent(),
	newDisplayName);
	commands.add(cmd3);
	} else if (newDisplayName.length() > 0) {
	DisplayNameType newDisplayNameType = FacesConfigFactory.eINSTANCE
	.createDisplayNameType();
	newDisplayNameType.setTextContent(newDisplayName);
	Command cmd4 = AddCommand
	.create(this.getEditingDomain(), facet,
	FacesConfigPackage.eINSTANCE
	.getFacetType_DisplayName(),
	newDisplayNameType);
	commands.add(cmd4);
	}

	if (facet.getDescription().size() > 0) {
	DescriptionType descriptionType = (DescriptionType) facet
	.getDescription().get(0);
	Command cmd5 = SetCommand.create(this.getEditingDomain(),
	descriptionType, FacesConfigPackage.eINSTANCE
	.getDescriptionType_TextContent(),
	newDescription);
	commands.add(cmd5);
	} else if (newDescription.length() > 0) {
	DescriptionType newDescriptionType = FacesConfigFactory.eINSTANCE
	.createDescriptionType();
	newDescriptionType.setTextContent(newDescription);
	Command cmd6 = AddCommand
	.create(this.getEditingDomain(), facet,
	FacesConfigPackage.eINSTANCE
	.getFacetType_Description(),
	newDescriptionType);
	commands.add(cmd6);
	}

	CompoundCommand command = new CompoundCommand(commands);
	if (command.canExecute()) {
	getEditingDomain().getCommandStack().execute(command);
	tableViewer.refresh(facet);
	}
	}

	}

	/**
	* remove a facet.
	*
	*/
	private void removeButtonSelected() {
	FacetType facet = (FacetType) ((IStructuredSelection) tableViewer
	.getSelection()).getFirstElement();

	Assert.isNotNull(facet);
	Command removeCommand = RemoveCommand.create(this.getEditingDomain(),
	getInput(), FacesConfigPackage.eINSTANCE
	.getComponentType_Facet(), facet);

	if (removeCommand.canExecute()) {
	this.getEditingDomain().getCommandStack().execute(removeCommand);
	refreshAll();
	}

	}

	/* (non-Javadoc)
	* @see org.eclipse.jface.viewers.ISelectionProvider#getSelection()
	*/
	public ISelection getSelection() {
	return tableViewer.getSelection();
	}


	/* (non-Javadoc)
	* @see org.eclipse.jface.viewers.ISelectionProvider#setSelection(org.eclipse.jface.viewers.ISelection)
	*/
	public void setSelection(ISelection selection) {

	tableViewer.setSelection(selection);
	}
	}