/*******************************************************************************
 * Copyright (c) 2006 Brad Reynolds 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:
 *     Brad Reynolds - initial API and implementation
 *     IBM Corporation - see bug 137934
 ******************************************************************************/

module org.eclipse.jface.examples.databinding.snippets.Snippet007ColorLabelProvider;

import java.lang.all;

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

import org.eclipse.core.databinding.beans.BeansObservables;
import org.eclipse.core.databinding.observable.Observables;
import org.eclipse.core.databinding.observable.Realm;
import org.eclipse.core.databinding.observable.list.IObservableList;
import org.eclipse.core.databinding.observable.map.IObservableMap;
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.viewers.ILabelProvider;
import org.eclipse.jface.viewers.ITableColorProvider;
import org.eclipse.jface.viewers.StructuredSelection;
import org.eclipse.jface.viewers.TableViewer;
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.SelectionAdapter;
import org.eclipse.swt.events.SelectionEvent;
import org.eclipse.swt.graphics.Color;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.Button;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.swt.widgets.Table;
import org.eclipse.swt.widgets.TableColumn;

/**
 * An example showing how to create a {@link ILabelProvider label provider} that
 * to provide colors.
 * 
 * @since 3.2
 */
public class Snippet007ColorLabelProvider {
    /**
     * @param args
     */
    public static void main(String[] args) {
        final List persons = new ArrayList();
        persons.add(new Person("Fiona Apple", Person.FEMALE));
        persons.add(new Person("Elliot Smith", Person.MALE));
        persons.add(new Person("Diana Krall", Person.FEMALE));
        persons.add(new Person("David Gilmour", Person.MALE));

        final Display display = new Display();
        Realm.runWithDefault(SWTObservables.getRealm(display), dgRunnable(() {
            Shell shell = new Shell(display);
            shell.setText("Gender Bender");
            shell.setLayout(new GridLayout());

            Table table = new Table(shell, SWT.SINGLE | SWT.H_SCROLL
                    | SWT.V_SCROLL | SWT.BORDER);
            GridData gridData = new GridData(SWT.FILL, SWT.FILL, true, true);
            table.setLayoutData(gridData);
            table.setHeaderVisible(true);
            table.setLinesVisible(true);
            TableColumn column = new TableColumn(table, SWT.NONE);
            column.setText("No");
            column.setWidth(20);
            column = new TableColumn(table, SWT.NONE);
            column.setText("Name");
            column.setWidth(100);
            final TableViewer viewer = new TableViewer(table);

            IObservableList observableList = Observables
                    .staticObservableList(persons);
            ObservableListContentProvider contentProvider = new ObservableListContentProvider();

            viewer.setContentProvider(contentProvider);

            // this does not have to correspond to the columns in the table,
            // we just list all attributes that affect the table content.
            IObservableMap[] attributes = BeansObservables.observeMaps(
                    contentProvider.getKnownElements(), Class.fromType!(Person),
                    [ "name", "gender" ]);

            class ColorLabelProvider : ObservableMapLabelProvider
                    , ITableColorProvider {
                Color male;
                Color female;

                this(IObservableMap[] attributes) {
                    super(attributes);
                    male = display.getSystemColor(SWT.COLOR_BLUE);
                    female = new Color(display, 255, 192, 203);
                }

                // to drive home the point that attributes does not have to
                // match
                // the columns
                // in the table, we change the column text as follows:
                public String getColumnText(Object element, int index) {
                    if (index is 0) {
                        return Integer
                                .toString(persons.indexOf(element) + 1);
                    }
                    return (cast(Person) element).getName();
                }

                public Color getBackground(Object element, int index) {
                    return null;
                }

                public Color getForeground(Object element, int index) {
                    if (index is 0)
                        return null;
                    Person person = cast(Person) element;
                    return (person.getGender() is Person.MALE) ? male
                            : female;
                }

                public void dispose() {
                    super.dispose();
                    female.dispose();
                }
            }
            viewer.setLabelProvider(new ColorLabelProvider(attributes));

            viewer.setInput(cast(Object)observableList);

            table.getColumn(0).pack();

            Button button = new Button(shell, SWT.PUSH);
            button.setText("Toggle Gender");
            button.addSelectionListener(new class() SelectionAdapter {
                public void widgetSelected(SelectionEvent arg0) {
                    StructuredSelection selection = cast(StructuredSelection) viewer
                            .getSelection();
                    if (selection !is null && !selection.isEmpty()) {
                        Person person = cast(Person) selection
                                .getFirstElement();
                        person
                                .setGender((person.getGender() is Person.MALE) ? Person.FEMALE
                                        : Person.MALE);
                    }
                }
            });

            shell.setSize(300, 400);
            shell.open();

            while (!shell.isDisposed()) {
                if (!display.readAndDispatch())
                    display.sleep();
            }
        }));
        display.dispose();
    }

    static class Person {
        static final int MALE = 0;
        static final int FEMALE = 1;
        private String name;
        private int gender;
        private PropertyChangeSupport changeSupport;

        this(String name, int gender) {
            changeSupport = new PropertyChangeSupport(this);
            this.name = name;
            this.gender = gender;
        }

        /**
         * Returns the name. Method declared public to satisfy Java bean
         * conventions
         * 
         * @return the name
         */
        public String getName() {
            return name;
        }

        /**
         * @param listener
         */
        public void addPropertyChangeListener(PropertyChangeListener listener) {
            changeSupport.addPropertyChangeListener(listener);
        }

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

        /**
         * Returns the gender. Method declared public to satisfy Java bean
         * conventions
         * 
         * @return the gender
         */
        public int getGender() {
            return gender;
        }

        void setGender(int gender) {
            changeSupport.firePropertyChange("gender", this.gender,
                    this.gender = gender);
        }
    }
}

void main( String[] args ){
    Snippet007ColorLabelProvider.main(args);
}