/*******************************************************************************
 * 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:
 *     The Pampered Chef, Inc. - initial API and implementation
 *     Tom Schindl - cell editing
 *     Matthew Hall - bugs 260329, 260337
 *     Heiko Ahlig - bug 267712
 *******************************************************************************/

module org.eclipse.jface.examples.databinding.snippets.Snippet032TableViewerColumnEditing;

import java.lang.all;

import java.beans.PropertyChangeListener;
import java.beans.PropertyChangeSupport;
import java.util.LinkedList;
import java.util.List;

import org.eclipse.core.databinding.DataBindingContext;
import org.eclipse.core.databinding.beans.BeanProperties;
import org.eclipse.core.databinding.beans.BeansObservables;
import org.eclipse.core.databinding.beans.IBeanValueProperty;
import org.eclipse.core.databinding.observable.Realm;
import org.eclipse.core.databinding.observable.list.WritableList;
import org.eclipse.core.databinding.observable.map.IObservableMap;
import org.eclipse.core.databinding.observable.value.IObservableValue;
import org.eclipse.core.databinding.property.Properties;
import org.eclipse.core.databinding.property.value.IValueProperty;
import org.eclipse.jface.databinding.swt.SWTObservables;
import org.eclipse.jface.databinding.swt.WidgetProperties;
import org.eclipse.jface.databinding.viewers.CellEditorProperties;
import org.eclipse.jface.databinding.viewers.ObservableListContentProvider;
import org.eclipse.jface.databinding.viewers.ObservableMapCellLabelProvider;
import org.eclipse.jface.databinding.viewers.ObservableValueEditingSupport;
import org.eclipse.jface.databinding.viewers.ViewersObservables;
import org.eclipse.jface.viewers.TableViewer;
import org.eclipse.jface.viewers.TableViewerColumn;
import org.eclipse.jface.viewers.TextCellEditor;
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;

/**
 * Demonstrates binding a TableViewer with multiple columns to a collection.
 */
public class Snippet032TableViewerColumnEditing {
    public static void main(String[] args) {
        final Display display = new Display();
        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);
        }
    }

    // The data model class. This is normally a persistent class of some sort.
    static class Person extends AbstractModelObject {
        // A property...
        String name;
        String firstName;

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

        public String getName() {
            return name;
        }

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

        public String getFirstName() {
            return firstName;
        }

        public void setFirstName(String firstName) {
            firePropertyChange("firstName", this.firstName,
                    this.firstName = firstName);
        }
    }

    // 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 List people = new LinkedList();
        {
            people.add(new Person("Dave", "Orme"));
            people.add(new Person("Gili", "Mendel"));
            people.add(new Person("Joe", "Winchester"));
            people.add(new Person("Boris", "Bokowski"));
            people.add(new Person("Brad", "Reynolds"));
            people.add(new Person("Matthew", "Hall"));
        }

        public List getPeople() {
            return people;
        }
    }

    // The GUI view
    static class View {
        private ViewModel viewModel;
        private Table committers;
        private Label selectedCommitterName;
        private Label selectedCommitterFirstName;

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

        public Shell createShell() {
            // Build a UI
            Display display = Display.getDefault();
            Shell shell = new Shell(display);
            shell.setLayout(new GridLayout(2, true));
            committers = new Table(shell, SWT.BORDER | SWT.FULL_SELECTION);
            committers.setLinesVisible(true);
            committers.setHeaderVisible(true);
            GridData layoutData = new GridData(SWT.FILL, SWT.FILL, true, true);
            layoutData.horizontalSpan = 2;
            committers.setLayoutData(layoutData);

            GridData fieldLayoutData = new GridData(SWT.FILL, SWT.BEGINNING,
                    true, false);
            selectedCommitterName = new Label(shell, SWT.NONE);
            selectedCommitterName.setLayoutData(fieldLayoutData);

            selectedCommitterFirstName = new Label(shell, SWT.NONE);
            selectedCommitterFirstName.setLayoutData(fieldLayoutData);

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

            // Open and return the Shell
            shell.setSize(250, 300);
            shell.open();
            return shell;
        }

        protected void bindGUI(DataBindingContext bindingContext) {
            // Since we're using a JFace Viewer, we do first wrap our Table...
            TableViewer peopleViewer = new TableViewer(committers);

            TableViewerColumn columnName = new TableViewerColumn(peopleViewer,
                    SWT.NONE);
            columnName.getColumn().setText("Name");
            columnName.getColumn().setWidth(100);

            TableViewerColumn columnFirstName = new TableViewerColumn(
                    peopleViewer, SWT.NONE);
            columnFirstName.getColumn().setText("FirstName");
            columnFirstName.getColumn().setWidth(100);

            // Bind viewer to model
            IBeanValueProperty propName = BeanProperties.value(Person.class,
                    "name");
            IBeanValueProperty propFirstname = BeanProperties.value(
                    Person.class, "firstName");

            IValueProperty cellEditorControlText = CellEditorProperties
                    .control().value(WidgetProperties.text());

            columnName.setEditingSupport(ObservableValueEditingSupport.create(
                    peopleViewer, bindingContext,
                    new TextCellEditor(committers), cellEditorControlText,
                    propName));
            columnFirstName.setEditingSupport(ObservableValueEditingSupport
                    .create(peopleViewer, bindingContext, new TextCellEditor(
                            committers), cellEditorControlText, propFirstname));

            ObservableListContentProvider contentProvider = new ObservableListContentProvider();
            peopleViewer.setContentProvider(contentProvider);

            // Bind the LabelProviders to the model and columns
            IObservableMap[] result = Properties.observeEach(contentProvider
                    .getKnownElements(), new IBeanValueProperty[] { propName,
                    propFirstname });

            columnName.setLabelProvider(new ObservableMapCellLabelProvider(
                    result[0]));
            columnFirstName
                    .setLabelProvider(new ObservableMapCellLabelProvider(
                            result[1]));

            peopleViewer.setInput(new WritableList(viewModel.getPeople(),
                    Person.class));

            // bind selectedCommitter labels to the name and forname of the
            // current selection
            IObservableValue selection = ViewersObservables
                    .observeSingleSelection(peopleViewer);
            bindingContext.bindValue(SWTObservables
                    .observeText(selectedCommitterName), BeansObservables
                    .observeDetailValue(selection, "name", String.class));
            bindingContext.bindValue(SWTObservables
                    .observeText(selectedCommitterFirstName), BeansObservables
                    .observeDetailValue(selection, "firstName", String.class));
        }
    }
}
void main( String[] args ){
    Snippet032TableViewerColumnEditing.main(args);
}