examples/org.eclipse.jface.examples.databinding/src/org/eclipse/jface/examples/databinding/snippets/Snippet028DuplexingObservableValue.java - platform/eclipse.platform.ui - Git at Google

 /*******************************************************************************
  * Copyright (c) 2009, 2018 Matthew Hall and others.
  *
  * This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License 2.0
  * which accompanies this distribution, and is available at
  * https://www.eclipse.org/legal/epl-2.0/
  *
  * SPDX-License-Identifier: EPL-2.0
  *
  * Contributors:
  *     Matthew Hall - initial API and implementation (bug 175735)
  *     Matthew Hall - bugs 262407, 260337
  ******************************************************************************/

 package org.eclipse.jface.examples.databinding.snippets;

 import java.beans.PropertyChangeListener;
 import java.beans.PropertyChangeSupport;

 import org.eclipse.core.databinding.DataBindingContext;
 import org.eclipse.core.databinding.beans.BeanProperties;
 import org.eclipse.core.databinding.observable.Realm;
 import org.eclipse.core.databinding.observable.list.IObservableList;
 import org.eclipse.core.databinding.observable.list.WritableList;
 import org.eclipse.core.databinding.observable.value.DuplexingObservableValue;
 import org.eclipse.jface.databinding.swt.DisplayRealm;
 import org.eclipse.jface.databinding.swt.WidgetProperties;
 import org.eclipse.jface.databinding.viewers.ViewerProperties;
 import org.eclipse.jface.databinding.viewers.ViewerSupport;
 import org.eclipse.jface.viewers.StructuredSelection;
 import org.eclipse.jface.viewers.TableViewer;
 import org.eclipse.swt.SWT;
 import org.eclipse.swt.layout.GridData;
 import org.eclipse.swt.layout.GridLayout;
 import org.eclipse.swt.widgets.Display;
 import org.eclipse.swt.widgets.Label;
 import org.eclipse.swt.widgets.Shell;
 import org.eclipse.swt.widgets.Table;
 import org.eclipse.swt.widgets.TableColumn;
 import org.eclipse.swt.widgets.Text;

 /**
  * @since 3.2
  *
  */
 public class Snippet028DuplexingObservableValue {
 	protected Shell shell;
 	private TableViewer viewer;
 	private Table table;
 	private Text releaseDate;
 	private Text title;
 	private Text director;
 	private Text writer;

 	/**
 	 * Launch the application
 	 *
 	 * @param args
 	 */
 	public static void main(String[] args) {
 		try {
 			Snippet028DuplexingObservableValue window = new Snippet028DuplexingObservableValue();
 			window.open();
 		} catch (Exception e) {
 			e.printStackTrace();
 		}
 	}

 	/**
 	 * Open the window
 	 */
 	public void open() {
 		final Display display = Display.getDefault();
 		Realm.runWithDefault(DisplayRealm.getRealm(display), () -> {
 			createContents();
 			shell.open();
 			shell.layout();
 			while (!shell.isDisposed()) {
 				if (!display.readAndDispatch())
 					display.sleep();
 			}
 		});
 	}

 	protected void createContents() {
 		shell = new Shell();
 		shell.setSize(509, 375);
 		shell.setText("Snippet028DuplexingObservableValue.java");
 		final GridLayout gridLayout = new GridLayout();
 		gridLayout.makeColumnsEqualWidth = true;
 		gridLayout.numColumns = 4;
 		shell.setLayout(gridLayout);

 		viewer = new TableViewer(shell, SWT.FULL_SELECTION | SWT.MULTI
 				| SWT.BORDER);
 		table = viewer.getTable();
 		table.setLinesVisible(true);
 		table.setHeaderVisible(true);
 		table.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true, 4, 1));

 		final TableColumn newColumnTableColumn_1 = new TableColumn(table,
 				SWT.NONE);
 		newColumnTableColumn_1.setWidth(120);
 		newColumnTableColumn_1.setText("Movie");

 		final TableColumn newColumnTableColumn = new TableColumn(table,
 				SWT.NONE);

 		newColumnTableColumn.setWidth(120);
 		newColumnTableColumn.setText("Release Date");

 		final TableColumn newColumnTableColumn_2 = new TableColumn(table,
 				SWT.NONE);
 		newColumnTableColumn_2.setWidth(120);
 		newColumnTableColumn_2.setText("Director");

 		final TableColumn newColumnTableColumn_3 = new TableColumn(table,
 				SWT.NONE);
 		newColumnTableColumn_3.setWidth(120);
 		newColumnTableColumn_3.setText("Writer");

 		final Label movieLabel = new Label(shell, SWT.NONE);
 		movieLabel.setText("Movie");

 		final Label directorLabel = new Label(shell, SWT.NONE);
 		directorLabel.setLayoutData(new GridData());
 		directorLabel.setText("Release Date");

 		final Label producerLabel = new Label(shell, SWT.NONE);
 		producerLabel.setText("Director");

 		final Label scoreLabel = new Label(shell, SWT.NONE);
 		scoreLabel.setText("Writer");

 		title = new Text(shell, SWT.BORDER);
 		final GridData gd_title = new GridData(SWT.FILL, SWT.CENTER, true,
 				false);
 		title.setLayoutData(gd_title);

 		releaseDate = new Text(shell, SWT.BORDER);
 		final GridData gd_releaseDate = new GridData(SWT.FILL, SWT.CENTER,
 				true, false);
 		releaseDate.setLayoutData(gd_releaseDate);

 		director = new Text(shell, SWT.BORDER);
 		final GridData gd_director = new GridData(SWT.FILL, SWT.CENTER, true,
 				false);
 		director.setLayoutData(gd_director);

 		writer = new Text(shell, SWT.BORDER);
 		final GridData gd_writer = new GridData(SWT.FILL, SWT.CENTER, true,
 				false);
 		writer.setLayoutData(gd_writer);

 		bindUI();
 	}

 	// Minimal JavaBeans support
 	public static abstract class AbstractModelObject {
 		private PropertyChangeSupport propertyChangeSupport = new PropertyChangeSupport(
 				this);

 		public void addPropertyChangeListener(PropertyChangeListener listener) {
 			propertyChangeSupport.addPropertyChangeListener(listener);
 		}

 		public void addPropertyChangeListener(String propertyName,
 				PropertyChangeListener listener) {
 			propertyChangeSupport.addPropertyChangeListener(propertyName,
 					listener);
 		}

 		public void removePropertyChangeListener(PropertyChangeListener listener) {
 			propertyChangeSupport.removePropertyChangeListener(listener);
 		}

 		public void removePropertyChangeListener(String propertyName,
 				PropertyChangeListener listener) {
 			propertyChangeSupport.removePropertyChangeListener(propertyName,
 					listener);
 		}

 		protected void firePropertyChange(String propertyName, Object oldValue,
 				Object newValue) {
 			propertyChangeSupport.firePropertyChange(propertyName, oldValue,
 					newValue);
 		}
 	}

 	public static class MovieInfo extends AbstractModelObject {
 		private String title;
 		private String releaseDate;
 		private String director;
 		private String writer;

 		public MovieInfo(String title, String releaseDate, String director,
 				String writer) {
 			this.title = title;
 			this.releaseDate = releaseDate;
 			this.director = director;
 			this.writer = writer;
 		}

 		public String getTitle() {
 			return title;
 		}

 		public void setTitle(String title) {
 			firePropertyChange("title", this.title, this.title = title);
 		}

 		public String getReleaseDate() {
 			return releaseDate;
 		}

 		public void setReleaseDate(String releaseDate) {
 			firePropertyChange("releaseDate", this.releaseDate,
 					this.releaseDate = releaseDate);
 		}

 		public String getDirector() {
 			return director;
 		}

 		public void setDirector(String director) {
 			firePropertyChange("director", this.director,
 					this.director = director);
 		}

 		public String getWriter() {
 			return writer;
 		}

 		public void setWriter(String writer) {
 			firePropertyChange("writer", this.writer, this.writer = writer);
 		}
 	}

 	private void bindUI() {
 		IObservableList movies = new WritableList();
 		movies.add(new MovieInfo("007: Quantum of Solace", "October 31, 2008",
 				"Marc Forster", "Robert Wade"));
 		movies.add(new MovieInfo("Batman Begins", "June 15, 2005",
 				"Christopher Nolan", "David S. Goyer"));
 		movies.add(new MovieInfo("Cloverfield", "January 18, 2008",
 				"Matt Reeves", "Drew Goddard"));
 		movies.add(new MovieInfo("The Dark Knight", "July 18, 2008",
 				"Christopher Nolan", "David S. Goyer"));
 		movies.add(new MovieInfo("Finding Nemo", "May 30, 2003",
 				"Andrew Stanton", "Andrew Stanton"));
 		movies.add(new MovieInfo("Get Smart", "June 20, 2008", "Peter Segal",
 				"Tom J. Astle"));
 		movies.add(new MovieInfo(
 				"Indiana Jones and the Kingdom of the Crystal Skull",
 				"May 22, 2008", "Steven Spielberg", "Drunken Lemurs"));
 		movies.add(new MovieInfo("Iron Man", "May 2, 2008", "Jon Favreau",
 				"Mark Fergus"));
 		movies.add(new MovieInfo("Raiders of the Lost Ark", "June 12, 1981",
 				"Steven Spielberg", "George Lucas"));
 		movies.add(new MovieInfo("Valkyrie", "December 25, 2008",
 				"Bryan Singer", "Christopher McQuarrie"));
 		movies.add(new MovieInfo("Wall-E", "June 27, 2008", "Andrew Stanton",
 				"Andrew Stanton"));
 		movies.add(new MovieInfo("Wanted", "June 27, 2008",
 				"Timur Bekmambetov", "Michael Brandt"));

 		ViewerSupport.bind(viewer, movies, BeanProperties.values(
 				MovieInfo.class, new String[] { "title", "releaseDate",
 						"director", "writer" }));

 		// Select Batman Begins and The Dark Knight, which have the same
 		// director and writer
 		viewer.setSelection(new StructuredSelection(new Object[] {
 				movies.get(1), movies.get(3) }));

 		DataBindingContext dbc = new DataBindingContext();

 		IObservableList selections = ViewerProperties.multipleSelection()
 				.observe(viewer);
 		dbc.bindValue(WidgetProperties.text(SWT.Modify).observe(title),
 				DuplexingObservableValue.withDefaults(BeanProperties.value(
 						"title").observeDetail(selections), "",
 						"<Multiple titles>"));
 		dbc.bindValue(WidgetProperties.text(SWT.Modify).observe(releaseDate),
 				DuplexingObservableValue.withDefaults(BeanProperties.value(
 						"releaseDate").observeDetail(selections), "",
 						"<Multiple dates>"));
 		dbc.bindValue(WidgetProperties.text(SWT.Modify).observe(director),
 				DuplexingObservableValue.withDefaults(BeanProperties.value(
 						"director").observeDetail(selections), "",
 						"<Multiple directors>"));
 		dbc.bindValue(WidgetProperties.text(SWT.Modify).observe(writer),
 				DuplexingObservableValue.withDefaults(BeanProperties.value(
 						"writer").observeDetail(selections), "",
 						"<Multiple writers>"));
 	}
 }
	/*******************************************************************************
	* Copyright (c) 2009, 2018 Matthew Hall and others.
	*
	* This program and the accompanying materials
	* are made available under the terms of the Eclipse Public License 2.0
	* which accompanies this distribution, and is available at
	* https://www.eclipse.org/legal/epl-2.0/
	*
	* SPDX-License-Identifier: EPL-2.0
	*
	* Contributors:
	* Matthew Hall - initial API and implementation (bug 175735)
	* Matthew Hall - bugs 262407, 260337
	******************************************************************************/

	package org.eclipse.jface.examples.databinding.snippets;

	import java.beans.PropertyChangeListener;
	import java.beans.PropertyChangeSupport;

	import org.eclipse.core.databinding.DataBindingContext;
	import org.eclipse.core.databinding.beans.BeanProperties;
	import org.eclipse.core.databinding.observable.Realm;
	import org.eclipse.core.databinding.observable.list.IObservableList;
	import org.eclipse.core.databinding.observable.list.WritableList;
	import org.eclipse.core.databinding.observable.value.DuplexingObservableValue;
	import org.eclipse.jface.databinding.swt.DisplayRealm;
	import org.eclipse.jface.databinding.swt.WidgetProperties;
	import org.eclipse.jface.databinding.viewers.ViewerProperties;
	import org.eclipse.jface.databinding.viewers.ViewerSupport;
	import org.eclipse.jface.viewers.StructuredSelection;
	import org.eclipse.jface.viewers.TableViewer;
	import org.eclipse.swt.SWT;
	import org.eclipse.swt.layout.GridData;
	import org.eclipse.swt.layout.GridLayout;
	import org.eclipse.swt.widgets.Display;
	import org.eclipse.swt.widgets.Label;
	import org.eclipse.swt.widgets.Shell;
	import org.eclipse.swt.widgets.Table;
	import org.eclipse.swt.widgets.TableColumn;
	import org.eclipse.swt.widgets.Text;

	/**
	* @since 3.2
	*
	*/
	public class Snippet028DuplexingObservableValue {
	protected Shell shell;
	private TableViewer viewer;
	private Table table;
	private Text releaseDate;
	private Text title;
	private Text director;
	private Text writer;

	/**
	* Launch the application
	*
	* @param args
	*/
	public static void main(String[] args) {
	try {
	Snippet028DuplexingObservableValue window = new Snippet028DuplexingObservableValue();
	window.open();
	} catch (Exception e) {
	e.printStackTrace();
	}
	}

	/**
	* Open the window
	*/
	public void open() {
	final Display display = Display.getDefault();
	Realm.runWithDefault(DisplayRealm.getRealm(display), () -> {
	createContents();
	shell.open();
	shell.layout();
	while (!shell.isDisposed()) {
	if (!display.readAndDispatch())
	display.sleep();
	}
	});
	}

	protected void createContents() {
	shell = new Shell();
	shell.setSize(509, 375);
	shell.setText("Snippet028DuplexingObservableValue.java");
	final GridLayout gridLayout = new GridLayout();
	gridLayout.makeColumnsEqualWidth = true;
	gridLayout.numColumns = 4;
	shell.setLayout(gridLayout);

	viewer = new TableViewer(shell, SWT.FULL_SELECTION \| SWT.MULTI
	\| SWT.BORDER);
	table = viewer.getTable();
	table.setLinesVisible(true);
	table.setHeaderVisible(true);
	table.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true, 4, 1));

	final TableColumn newColumnTableColumn_1 = new TableColumn(table,
	SWT.NONE);
	newColumnTableColumn_1.setWidth(120);
	newColumnTableColumn_1.setText("Movie");

	final TableColumn newColumnTableColumn = new TableColumn(table,
	SWT.NONE);

	newColumnTableColumn.setWidth(120);
	newColumnTableColumn.setText("Release Date");

	final TableColumn newColumnTableColumn_2 = new TableColumn(table,
	SWT.NONE);
	newColumnTableColumn_2.setWidth(120);
	newColumnTableColumn_2.setText("Director");

	final TableColumn newColumnTableColumn_3 = new TableColumn(table,
	SWT.NONE);
	newColumnTableColumn_3.setWidth(120);
	newColumnTableColumn_3.setText("Writer");

	final Label movieLabel = new Label(shell, SWT.NONE);
	movieLabel.setText("Movie");

	final Label directorLabel = new Label(shell, SWT.NONE);
	directorLabel.setLayoutData(new GridData());
	directorLabel.setText("Release Date");

	final Label producerLabel = new Label(shell, SWT.NONE);
	producerLabel.setText("Director");

	final Label scoreLabel = new Label(shell, SWT.NONE);
	scoreLabel.setText("Writer");

	title = new Text(shell, SWT.BORDER);
	final GridData gd_title = new GridData(SWT.FILL, SWT.CENTER, true,
	false);
	title.setLayoutData(gd_title);

	releaseDate = new Text(shell, SWT.BORDER);
	final GridData gd_releaseDate = new GridData(SWT.FILL, SWT.CENTER,
	true, false);
	releaseDate.setLayoutData(gd_releaseDate);

	director = new Text(shell, SWT.BORDER);
	final GridData gd_director = new GridData(SWT.FILL, SWT.CENTER, true,
	false);
	director.setLayoutData(gd_director);

	writer = new Text(shell, SWT.BORDER);
	final GridData gd_writer = new GridData(SWT.FILL, SWT.CENTER, true,
	false);
	writer.setLayoutData(gd_writer);

	bindUI();
	}

	// Minimal JavaBeans support
	public static abstract class AbstractModelObject {
	private PropertyChangeSupport propertyChangeSupport = new PropertyChangeSupport(
	this);

	public void addPropertyChangeListener(PropertyChangeListener listener) {
	propertyChangeSupport.addPropertyChangeListener(listener);
	}

	public void addPropertyChangeListener(String propertyName,
	PropertyChangeListener listener) {
	propertyChangeSupport.addPropertyChangeListener(propertyName,
	listener);
	}

	public void removePropertyChangeListener(PropertyChangeListener listener) {
	propertyChangeSupport.removePropertyChangeListener(listener);
	}

	public void removePropertyChangeListener(String propertyName,
	PropertyChangeListener listener) {
	propertyChangeSupport.removePropertyChangeListener(propertyName,
	listener);
	}

	protected void firePropertyChange(String propertyName, Object oldValue,
	Object newValue) {
	propertyChangeSupport.firePropertyChange(propertyName, oldValue,
	newValue);
	}
	}

	public static class MovieInfo extends AbstractModelObject {
	private String title;
	private String releaseDate;
	private String director;
	private String writer;

	public MovieInfo(String title, String releaseDate, String director,
	String writer) {
	this.title = title;
	this.releaseDate = releaseDate;
	this.director = director;
	this.writer = writer;
	}

	public String getTitle() {
	return title;
	}

	public void setTitle(String title) {
	firePropertyChange("title", this.title, this.title = title);
	}

	public String getReleaseDate() {
	return releaseDate;
	}

	public void setReleaseDate(String releaseDate) {
	firePropertyChange("releaseDate", this.releaseDate,
	this.releaseDate = releaseDate);
	}

	public String getDirector() {
	return director;
	}

	public void setDirector(String director) {
	firePropertyChange("director", this.director,
	this.director = director);
	}

	public String getWriter() {
	return writer;
	}

	public void setWriter(String writer) {
	firePropertyChange("writer", this.writer, this.writer = writer);
	}
	}

	private void bindUI() {
	IObservableList movies = new WritableList();
	movies.add(new MovieInfo("007: Quantum of Solace", "October 31, 2008",
	"Marc Forster", "Robert Wade"));
	movies.add(new MovieInfo("Batman Begins", "June 15, 2005",
	"Christopher Nolan", "David S. Goyer"));
	movies.add(new MovieInfo("Cloverfield", "January 18, 2008",
	"Matt Reeves", "Drew Goddard"));
	movies.add(new MovieInfo("The Dark Knight", "July 18, 2008",
	"Christopher Nolan", "David S. Goyer"));
	movies.add(new MovieInfo("Finding Nemo", "May 30, 2003",
	"Andrew Stanton", "Andrew Stanton"));
	movies.add(new MovieInfo("Get Smart", "June 20, 2008", "Peter Segal",
	"Tom J. Astle"));
	movies.add(new MovieInfo(
	"Indiana Jones and the Kingdom of the Crystal Skull",
	"May 22, 2008", "Steven Spielberg", "Drunken Lemurs"));
	movies.add(new MovieInfo("Iron Man", "May 2, 2008", "Jon Favreau",
	"Mark Fergus"));
	movies.add(new MovieInfo("Raiders of the Lost Ark", "June 12, 1981",
	"Steven Spielberg", "George Lucas"));
	movies.add(new MovieInfo("Valkyrie", "December 25, 2008",
	"Bryan Singer", "Christopher McQuarrie"));
	movies.add(new MovieInfo("Wall-E", "June 27, 2008", "Andrew Stanton",
	"Andrew Stanton"));
	movies.add(new MovieInfo("Wanted", "June 27, 2008",
	"Timur Bekmambetov", "Michael Brandt"));

	ViewerSupport.bind(viewer, movies, BeanProperties.values(
	MovieInfo.class, new String[] { "title", "releaseDate",
	"director", "writer" }));

	// Select Batman Begins and The Dark Knight, which have the same
	// director and writer
	viewer.setSelection(new StructuredSelection(new Object[] {
	movies.get(1), movies.get(3) }));

	DataBindingContext dbc = new DataBindingContext();

	IObservableList selections = ViewerProperties.multipleSelection()
	.observe(viewer);
	dbc.bindValue(WidgetProperties.text(SWT.Modify).observe(title),
	DuplexingObservableValue.withDefaults(BeanProperties.value(
	"title").observeDetail(selections), "",
	"<Multiple titles>"));
	dbc.bindValue(WidgetProperties.text(SWT.Modify).observe(releaseDate),
	DuplexingObservableValue.withDefaults(BeanProperties.value(
	"releaseDate").observeDetail(selections), "",
	"<Multiple dates>"));
	dbc.bindValue(WidgetProperties.text(SWT.Modify).observe(director),
	DuplexingObservableValue.withDefaults(BeanProperties.value(
	"director").observeDetail(selections), "",
	"<Multiple directors>"));
	dbc.bindValue(WidgetProperties.text(SWT.Modify).observe(writer),
	DuplexingObservableValue.withDefaults(BeanProperties.value(
	"writer").observeDetail(selections), "",
	"<Multiple writers>"));
	}
	}