org.eclipse.riena.sample.snippets.SnippetComboRidget002.java Source code

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Here is the source code for org.eclipse.riena.sample.snippets.SnippetComboRidget002.java

Source

/*******************************************************************************
 * Copyright (c) 2007, 2013 compeople AG 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:
 *    compeople AG - initial API and implementation
 *******************************************************************************/
package org.eclipse.riena.sample.snippets;

import java.util.Arrays;

import org.eclipse.core.databinding.DataBindingContext;
import org.eclipse.core.databinding.observable.list.WritableList;
import org.eclipse.core.databinding.observable.value.WritableValue;
import org.eclipse.jface.databinding.swt.SWTObservables;
import org.eclipse.jface.layout.GridDataFactory;
import org.eclipse.swt.layout.GridLayout;
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.riena.ui.ridgets.IComboRidget;
import org.eclipse.riena.ui.ridgets.databinding.ConverterFactory;
import org.eclipse.riena.ui.ridgets.swt.SwtRidgetFactory;
import org.eclipse.riena.ui.swt.utils.UIControlsFactory;

/**
 * Demonstrates converting an enum to String and back while using a ComboRidget.
 */
public class SnippetComboRidget002 {

    private enum Answer {
        YES, NO, MAYBE
    }

    public static void main(final String[] args) {
        final Display display = Display.getDefault();

        try {
            final Shell shell = UIControlsFactory.createShell(display);
            shell.setLayout(new GridLayout(2, false));
            shell.setText(SnippetComboRidget002.class.getSimpleName());

            UIControlsFactory.createLabel(shell, "ComboRidget:"); //$NON-NLS-1$
            final Combo combo = UIControlsFactory.createCombo(shell);

            UIControlsFactory.createLabel(shell, "Selection:"); //$NON-NLS-1$
            final Label label = UIControlsFactory.createLabel(shell, ""); //$NON-NLS-1$
            GridDataFactory.fillDefaults().grab(true, false).applyTo(label);

            final IComboRidget comboRidget = (IComboRidget) SwtRidgetFactory.createRidget(combo);
            final WritableList values = new WritableList(Arrays.asList(Answer.YES, Answer.NO, Answer.MAYBE),
                    Answer.class);
            final WritableValue selection = new WritableValue(Answer.YES, Answer.class);

            final ConverterFactory<?, ?> factory = new ConverterFactory<Answer, String>(Answer.class, String.class)
                    .add(Answer.YES, "Yes").add(Answer.NO, "No").add(Answer.MAYBE, "Maybe").add(null, ""); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$ //$NON-NLS-4$
            comboRidget.setModelToUIControlConverter(factory.createFromToConverter());
            comboRidget.setUIControlToModelConverter(factory.createToFromConverter());
            comboRidget.bindToModel(values, Answer.class, null, selection);
            comboRidget.updateFromModel();

            final DataBindingContext dbc = new DataBindingContext();
            dbc.bindValue(SWTObservables.observeText(label), selection);

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

}