examples/org.eclipse.jface.examples.databinding/src/org/eclipse/jface/examples/databinding/snippets/Snippet017TableViewerWithDerivedColumns.java - platform/eclipse.platform.ui - Git at Google

 /*******************************************************************************
  * Copyright (c) 2006 The Pampered Chef, 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:
  *     Coconut Palm Software, Inc. - Initial API and implementation
  ******************************************************************************/

 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.BeansObservables;
 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.map.CompositeMap;
 import org.eclipse.core.databinding.observable.map.IObservableMap;
 import org.eclipse.core.databinding.observable.value.IObservableValue;
 import org.eclipse.jface.databinding.swt.SWTObservables;
 import org.eclipse.jface.databinding.viewers.ObservableListContentProvider;
 import org.eclipse.jface.databinding.viewers.ObservableMapLabelProvider;
 import org.eclipse.jface.databinding.viewers.ViewersObservables;
 import org.eclipse.jface.layout.GridDataFactory;
 import org.eclipse.jface.layout.GridLayoutFactory;
 import org.eclipse.jface.viewers.ComboViewer;
 import org.eclipse.jface.viewers.TableViewer;
 import org.eclipse.jface.viewers.Viewer;
 import org.eclipse.jface.viewers.ViewerFilter;
 import org.eclipse.swt.SWT;
 import org.eclipse.swt.widgets.Combo;
 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;

 /**
  * Demonstrates binding a TableViewer to a collection.
  */
 public class Snippet017TableViewerWithDerivedColumns {
 	public static void main(String[] args) {
 		final Display display = new Display();

 		// Set up data binding. In an RCP application, the threading Realm
 		// will be set for you automatically by the Workbench. In an SWT
 		// application, you can do this once, wrapping your binding
 		// method call.
 		Realm.runWithDefault(SWTObservables.getRealm(display), new Runnable() {
 			public void run() {
 				ViewModel viewModel = new ViewModel();
 				Shell shell = new View(viewModel).createShell();

 				// The SWT event loop
 				while (!shell.isDisposed()) {
 					if (!display.readAndDispatch()) {
 						display.sleep();
 					}
 				}
 			}
 		});
 	}

 	// 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);
 		}
 	}

 	private static Person UNKNOWN = new Person("unknown", null, null);

 	// The data model class. This is normally a persistent class of some sort.
 	static class Person extends AbstractModelObject {
 		// A property...
 		String name = "Donald Duck";
 		Person mother;
 		Person father;

 		public Person(String name, Person mother, Person father) {
 			this.name = name;
 			this.mother = mother;
 			this.father = father;
 		}

 		public String getName() {
 			return name;
 		}

 		public void setName(String name) {
 			String oldValue = this.name;
 			this.name = name;
 			firePropertyChange("name", oldValue, name);
 		}

 		public Person getMother() {
 			return mother;
 		}

 		public void setMother(Person mother) {
 			firePropertyChange("mother", this.mother, this.mother = mother);
 		}

 		public Person getFather() {
 			return father;
 		}

 		public void setFather(Person father) {
 			firePropertyChange("father", this.father, this.father = father);
 		}

 		public String toString() {
 			return name;
 		}
 	}

 	// The View's model--the root of our Model graph for this particular GUI.
 	//
 	// Typically each View class has a corresponding ViewModel class.
 	// The ViewModel is responsible for getting the objects to edit from the
 	// data access tier. Since this snippet doesn't have any persistent objects
 	// ro retrieve, this ViewModel just instantiates a model object to edit.
 	static class ViewModel {
 		// The model to bind
 		private IObservableList people = new WritableList();
 		{
 			Person fergus = new Person("Fergus McDuck", UNKNOWN, UNKNOWN);
 			Person downy = new Person("Downy O'Drake", UNKNOWN, UNKNOWN);
 			Person scrooge = new Person("Scrooge McDuck", downy, fergus);
 			Person hortense = new Person("Hortense McDuck", downy, fergus);
 			Person quackmore = new Person("Quackmore Duck", UNKNOWN, UNKNOWN);
 			Person della = new Person("Della Duck", hortense, quackmore);
 			Person donald = new Person("Donald Duck", hortense, quackmore);
 			donald.setFather(quackmore);
 			donald.setMother(hortense);
 			della.setFather(quackmore);
 			della.setMother(hortense);
 			hortense.setMother(downy);
 			hortense.setFather(fergus);
 			scrooge.setMother(downy);
 			scrooge.setFather(fergus);
 			people.add(UNKNOWN);
 			people.add(downy);
 			people.add(fergus);
 			people.add(scrooge);
 			people.add(quackmore);
 			people.add(hortense);
 			people.add(della);
 			people.add(donald);
 		}

 		public IObservableList getPeople() {
 			return people;
 		}
 	}

 	// The GUI view
 	static class View {
 		private ViewModel viewModel;
 		private Table duckFamily;
 		private Text nameText;
 		private Combo motherCombo;
 		private Combo fatherCombo;

 		public View(ViewModel viewModel) {
 			this.viewModel = viewModel;
 		}

 		public Shell createShell() {
 			// Build a UI
 			Display display = Display.getDefault();
 			Shell shell = new Shell(display);
 			duckFamily = new Table(shell, SWT.BORDER | SWT.FULL_SELECTION);
 			duckFamily.setHeaderVisible(true);
 			GridDataFactory.defaultsFor(duckFamily).span(2, 1).applyTo(
 					duckFamily);
 			createColumn("Name");
 			createColumn("Mother");
 			createColumn("Father");
 			createColumn("Grandmother");
 			duckFamily.setLinesVisible(true);

 			new Label(shell, SWT.NONE).setText("Name:");
 			nameText = new Text(shell, SWT.BORDER);
 			GridDataFactory.defaultsFor(nameText).grab(true, false).applyTo(
 					nameText);

 			new Label(shell, SWT.NONE).setText("Mother:");
 			motherCombo = new Combo(shell, SWT.READ_ONLY);

 			new Label(shell, SWT.NONE).setText("Father:");
 			fatherCombo = new Combo(shell, SWT.READ_ONLY);

 			DataBindingContext bindingContext = new DataBindingContext();
 			bindGUI(bindingContext);

 			GridLayoutFactory.swtDefaults().numColumns(2).applyTo(shell);
 			// Open and return the Shell
 			shell.setSize(500, 300);
 			shell.open();
 			return shell;
 		}

 		private void createColumn(String string) {
 			final TableColumn column = new TableColumn(duckFamily, SWT.NONE);
 			column.setWidth(100);
 			column.setText(string);
 		}

 		protected void bindGUI(DataBindingContext bindingContext) {
 			// Since we're using a JFace Viewer, we do first wrap our Table...
 			TableViewer peopleViewer = new TableViewer(duckFamily);
 			peopleViewer.addFilter(new ViewerFilter() {
 				public boolean select(Viewer viewer, Object parentElement,
 						Object element) {
 					return element != UNKNOWN;
 				}
 			});

 			// Create a standard content provider
 			ObservableListContentProvider peopleViewerContentProvider = new ObservableListContentProvider();
 			peopleViewer.setContentProvider(peopleViewerContentProvider);

 			// And a standard label provider that maps columns
 			IObservableMap nameMap = BeansObservables.observeMap(
 					peopleViewerContentProvider.getKnownElements(),
 					Person.class, "name");
 			IObservableMap motherMap = BeansObservables.observeMap(
 					peopleViewerContentProvider.getKnownElements(),
 					Person.class, "mother");
 			IObservableMap fatherMap = BeansObservables.observeMap(
 					peopleViewerContentProvider.getKnownElements(),
 					Person.class, "father");
 			IObservableMap grandmotherMap = new CompositeMap(motherMap,
 					BeansObservables.setToMapFactory(Person.class, "mother"));
 			IObservableMap[] columnMaps = new IObservableMap[] {
 					nameMap,
 					new CompositeMap(motherMap, BeansObservables.setToMapFactory(
 							Person.class, "name")),
 					new CompositeMap(fatherMap, BeansObservables.setToMapFactory(
 							Person.class, "name")),
 					new CompositeMap(grandmotherMap, BeansObservables.setToMapFactory(
 							Person.class, "name")) };
 			peopleViewer.setLabelProvider(new ObservableMapLabelProvider(
 					columnMaps));

 			// Now set the Viewer's input
 			peopleViewer.setInput(viewModel.getPeople());

 			IObservableValue selection = ViewersObservables
 					.observeSingleSelection(peopleViewer);
 			bindingContext
 					.bindValue(
 							SWTObservables.observeText(nameText, SWT.Modify),
 							BeansObservables.observeDetailValue(Realm
 									.getDefault(), selection, "name",
 									String.class), null, null);

 			ComboViewer mothercomboViewer = new ComboViewer(motherCombo);
 			ObservableListContentProvider motherComboContentProvider = new ObservableListContentProvider();
 			mothercomboViewer.setContentProvider(motherComboContentProvider);
 			mothercomboViewer.setLabelProvider(new ObservableMapLabelProvider(
 					BeansObservables.observeMap(motherComboContentProvider
 							.getKnownElements(), Person.class, "name")));
 			mothercomboViewer.setInput(viewModel.getPeople());
 			bindingContext.bindValue(ViewersObservables
 					.observeSingleSelection(mothercomboViewer),
 					BeansObservables.observeDetailValue(Realm.getDefault(),
 							selection, "mother", Person.class), null, null);

 			ComboViewer fatherComboViewer = new ComboViewer(fatherCombo);
 			ObservableListContentProvider fatherComboContentProvider = new ObservableListContentProvider();
 			fatherComboViewer
 					.setContentProvider(fatherComboContentProvider);
 			fatherComboViewer.setLabelProvider(new ObservableMapLabelProvider(
 					BeansObservables.observeMap(fatherComboContentProvider
 							.getKnownElements(), Person.class, "name")));
 			fatherComboViewer.setInput(viewModel.getPeople());
 			bindingContext.bindValue(ViewersObservables
 					.observeSingleSelection(fatherComboViewer),
 					BeansObservables.observeDetailValue(Realm.getDefault(),
 							selection, "father", Person.class), null, null);
 		}
 	}

 }
	/*******************************************************************************
	* Copyright (c) 2006 The Pampered Chef, 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:
	* Coconut Palm Software, Inc. - Initial API and implementation
	******************************************************************************/

	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.BeansObservables;
	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.map.CompositeMap;
	import org.eclipse.core.databinding.observable.map.IObservableMap;
	import org.eclipse.core.databinding.observable.value.IObservableValue;
	import org.eclipse.jface.databinding.swt.SWTObservables;
	import org.eclipse.jface.databinding.viewers.ObservableListContentProvider;
	import org.eclipse.jface.databinding.viewers.ObservableMapLabelProvider;
	import org.eclipse.jface.databinding.viewers.ViewersObservables;
	import org.eclipse.jface.layout.GridDataFactory;
	import org.eclipse.jface.layout.GridLayoutFactory;
	import org.eclipse.jface.viewers.ComboViewer;
	import org.eclipse.jface.viewers.TableViewer;
	import org.eclipse.jface.viewers.Viewer;
	import org.eclipse.jface.viewers.ViewerFilter;
	import org.eclipse.swt.SWT;
	import org.eclipse.swt.widgets.Combo;
	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;

	/**
	* Demonstrates binding a TableViewer to a collection.
	*/
	public class Snippet017TableViewerWithDerivedColumns {
	public static void main(String[] args) {
	final Display display = new Display();

	// Set up data binding. In an RCP application, the threading Realm
	// will be set for you automatically by the Workbench. In an SWT
	// application, you can do this once, wrapping your binding
	// method call.
	Realm.runWithDefault(SWTObservables.getRealm(display), new Runnable() {
	public void run() {
	ViewModel viewModel = new ViewModel();
	Shell shell = new View(viewModel).createShell();

	// The SWT event loop
	while (!shell.isDisposed()) {
	if (!display.readAndDispatch()) {
	display.sleep();
	}
	}
	}
	});
	}

	// 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);
	}
	}

	private static Person UNKNOWN = new Person("unknown", null, null);

	// The data model class. This is normally a persistent class of some sort.
	static class Person extends AbstractModelObject {
	// A property...
	String name = "Donald Duck";
	Person mother;
	Person father;

	public Person(String name, Person mother, Person father) {
	this.name = name;
	this.mother = mother;
	this.father = father;
	}

	public String getName() {
	return name;
	}

	public void setName(String name) {
	String oldValue = this.name;
	this.name = name;
	firePropertyChange("name", oldValue, name);
	}

	public Person getMother() {
	return mother;
	}

	public void setMother(Person mother) {
	firePropertyChange("mother", this.mother, this.mother = mother);
	}

	public Person getFather() {
	return father;
	}

	public void setFather(Person father) {
	firePropertyChange("father", this.father, this.father = father);
	}

	public String toString() {
	return name;
	}
	}

	// The View's model--the root of our Model graph for this particular GUI.
	//
	// Typically each View class has a corresponding ViewModel class.
	// The ViewModel is responsible for getting the objects to edit from the
	// data access tier. Since this snippet doesn't have any persistent objects
	// ro retrieve, this ViewModel just instantiates a model object to edit.
	static class ViewModel {
	// The model to bind
	private IObservableList people = new WritableList();
	{
	Person fergus = new Person("Fergus McDuck", UNKNOWN, UNKNOWN);
	Person downy = new Person("Downy O'Drake", UNKNOWN, UNKNOWN);
	Person scrooge = new Person("Scrooge McDuck", downy, fergus);
	Person hortense = new Person("Hortense McDuck", downy, fergus);
	Person quackmore = new Person("Quackmore Duck", UNKNOWN, UNKNOWN);
	Person della = new Person("Della Duck", hortense, quackmore);
	Person donald = new Person("Donald Duck", hortense, quackmore);
	donald.setFather(quackmore);
	donald.setMother(hortense);
	della.setFather(quackmore);
	della.setMother(hortense);
	hortense.setMother(downy);
	hortense.setFather(fergus);
	scrooge.setMother(downy);
	scrooge.setFather(fergus);
	people.add(UNKNOWN);
	people.add(downy);
	people.add(fergus);
	people.add(scrooge);
	people.add(quackmore);
	people.add(hortense);
	people.add(della);
	people.add(donald);
	}

	public IObservableList getPeople() {
	return people;
	}
	}

	// The GUI view
	static class View {
	private ViewModel viewModel;
	private Table duckFamily;
	private Text nameText;
	private Combo motherCombo;
	private Combo fatherCombo;

	public View(ViewModel viewModel) {
	this.viewModel = viewModel;
	}

	public Shell createShell() {
	// Build a UI
	Display display = Display.getDefault();
	Shell shell = new Shell(display);
	duckFamily = new Table(shell, SWT.BORDER \| SWT.FULL_SELECTION);
	duckFamily.setHeaderVisible(true);
	GridDataFactory.defaultsFor(duckFamily).span(2, 1).applyTo(
	duckFamily);
	createColumn("Name");
	createColumn("Mother");
	createColumn("Father");
	createColumn("Grandmother");
	duckFamily.setLinesVisible(true);

	new Label(shell, SWT.NONE).setText("Name:");
	nameText = new Text(shell, SWT.BORDER);
	GridDataFactory.defaultsFor(nameText).grab(true, false).applyTo(
	nameText);

	new Label(shell, SWT.NONE).setText("Mother:");
	motherCombo = new Combo(shell, SWT.READ_ONLY);

	new Label(shell, SWT.NONE).setText("Father:");
	fatherCombo = new Combo(shell, SWT.READ_ONLY);

	DataBindingContext bindingContext = new DataBindingContext();
	bindGUI(bindingContext);

	GridLayoutFactory.swtDefaults().numColumns(2).applyTo(shell);
	// Open and return the Shell
	shell.setSize(500, 300);
	shell.open();
	return shell;
	}

	private void createColumn(String string) {
	final TableColumn column = new TableColumn(duckFamily, SWT.NONE);
	column.setWidth(100);
	column.setText(string);
	}

	protected void bindGUI(DataBindingContext bindingContext) {
	// Since we're using a JFace Viewer, we do first wrap our Table...
	TableViewer peopleViewer = new TableViewer(duckFamily);
	peopleViewer.addFilter(new ViewerFilter() {
	public boolean select(Viewer viewer, Object parentElement,
	Object element) {
	return element != UNKNOWN;
	}
	});

	// Create a standard content provider
	ObservableListContentProvider peopleViewerContentProvider = new ObservableListContentProvider();
	peopleViewer.setContentProvider(peopleViewerContentProvider);

	// And a standard label provider that maps columns
	IObservableMap nameMap = BeansObservables.observeMap(
	peopleViewerContentProvider.getKnownElements(),
	Person.class, "name");
	IObservableMap motherMap = BeansObservables.observeMap(
	peopleViewerContentProvider.getKnownElements(),
	Person.class, "mother");
	IObservableMap fatherMap = BeansObservables.observeMap(
	peopleViewerContentProvider.getKnownElements(),
	Person.class, "father");
	IObservableMap grandmotherMap = new CompositeMap(motherMap,
	BeansObservables.setToMapFactory(Person.class, "mother"));
	IObservableMap[] columnMaps = new IObservableMap[] {
	nameMap,
	new CompositeMap(motherMap, BeansObservables.setToMapFactory(
	Person.class, "name")),
	new CompositeMap(fatherMap, BeansObservables.setToMapFactory(
	Person.class, "name")),
	new CompositeMap(grandmotherMap, BeansObservables.setToMapFactory(
	Person.class, "name")) };
	peopleViewer.setLabelProvider(new ObservableMapLabelProvider(
	columnMaps));

	// Now set the Viewer's input
	peopleViewer.setInput(viewModel.getPeople());

	IObservableValue selection = ViewersObservables
	.observeSingleSelection(peopleViewer);
	bindingContext
	.bindValue(
	SWTObservables.observeText(nameText, SWT.Modify),
	BeansObservables.observeDetailValue(Realm
	.getDefault(), selection, "name",
	String.class), null, null);

	ComboViewer mothercomboViewer = new ComboViewer(motherCombo);
	ObservableListContentProvider motherComboContentProvider = new ObservableListContentProvider();
	mothercomboViewer.setContentProvider(motherComboContentProvider);
	mothercomboViewer.setLabelProvider(new ObservableMapLabelProvider(
	BeansObservables.observeMap(motherComboContentProvider
	.getKnownElements(), Person.class, "name")));
	mothercomboViewer.setInput(viewModel.getPeople());
	bindingContext.bindValue(ViewersObservables
	.observeSingleSelection(mothercomboViewer),
	BeansObservables.observeDetailValue(Realm.getDefault(),
	selection, "mother", Person.class), null, null);

	ComboViewer fatherComboViewer = new ComboViewer(fatherCombo);
	ObservableListContentProvider fatherComboContentProvider = new ObservableListContentProvider();
	fatherComboViewer
	.setContentProvider(fatherComboContentProvider);
	fatherComboViewer.setLabelProvider(new ObservableMapLabelProvider(
	BeansObservables.observeMap(fatherComboContentProvider
	.getKnownElements(), Person.class, "name")));
	fatherComboViewer.setInput(viewModel.getPeople());
	bindingContext.bindValue(ViewersObservables
	.observeSingleSelection(fatherComboViewer),
	BeansObservables.observeDetailValue(Realm.getDefault(),
	selection, "father", Person.class), null, null);
	}
	}

	}