/*******************************************************************************
 * Copyright (c) 2007 IBM Corporation 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:
 *     Boris Bokowski, IBM Corporation - initial API and implementation
 *     Matthew Hall - bug 260329
 *******************************************************************************/

module org.eclipse.jface.examples.databinding.snippets.Snippet014WizardDialog;

import java.lang.all;

import java.util.Date;

import org.eclipse.core.databinding.DataBindingContext;
import org.eclipse.core.databinding.UpdateValueStrategy;
import org.eclipse.core.databinding.observable.Realm;
import org.eclipse.core.databinding.observable.value.IObservableValue;
import org.eclipse.core.databinding.observable.value.WritableValue;
import org.eclipse.core.databinding.validation.IValidator;
import org.eclipse.core.databinding.validation.ValidationStatus;
import org.eclipse.core.runtime.IStatus;
import org.eclipse.jface.databinding.swt.SWTObservables;
import org.eclipse.jface.databinding.wizard.WizardPageSupport;
import org.eclipse.jface.layout.GridLayoutFactory;
import org.eclipse.jface.resource.ImageDescriptor;
import org.eclipse.jface.wizard.IWizard;
import org.eclipse.jface.wizard.Wizard;
import org.eclipse.jface.wizard.WizardDialog;
import org.eclipse.jface.wizard.WizardPage;
import org.eclipse.swt.SWT;
import org.eclipse.swt.graphics.Image;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Label;
import org.eclipse.swt.widgets.Text;

/**
 * Creates and opens a wizard dialog with two simple wizard pages.
 */
public class Snippet014WizardDialog {

    static class FirstWizardPage extends WizardPage {
        private final class SingleDigitValidator implements IValidator {
            public IStatus validate(Object value) {
                Integer i = (Integer) value;
                if (i == null) {
                    return ValidationStatus
                            .info("Please enter a value.");
                }
                if (i.intValue() < 0 || i.intValue() > 9) {
                    return ValidationStatus
                            .error("Value must be between 0 and 9.");
                }
                return ValidationStatus.ok();
            }
        }

        protected FirstWizardPage() {
            super("First", "First Page", ImageDescriptor
                    .createFromImage(new Image(Display.getDefault(), 16, 16)));
        }

        public void createControl(Composite parent) {
            DataBindingContext dbc = new DataBindingContext();
            WizardPageSupport.create(this, dbc);
            Composite composite = new Composite(parent, SWT.NONE);
            Label label = new Label(composite, SWT.NONE);
            label.setText("Enter a number between 0 and 9:");
            Text text = new Text(composite, SWT.BORDER);
            
            dbc.bindValue(
                            SWTObservables.observeText(text, SWT.Modify),
                            ((SampleWizard) getWizard()).getModel().intValue,
                            new UpdateValueStrategy().setAfterConvertValidator(new SingleDigitValidator()),
                            null);
            
            GridLayoutFactory.swtDefaults().numColumns(2).generateLayout(
                    composite);
            setControl(composite);
        }
    }

    static class SecondWizardPage extends WizardPage {
        protected SecondWizardPage() {
            super("Second", "Second Page", ImageDescriptor
                    .createFromImage(new Image(Display.getDefault(), 16, 16)));
        }

        public void createControl(Composite parent) {
            DataBindingContext dbc = new DataBindingContext();
            WizardPageSupport.create(this, dbc);
            Composite composite = new Composite(parent, SWT.NONE);
            Label label = new Label(composite, SWT.NONE);
            label.setText("Enter a date:");
            Text text = new Text(composite, SWT.BORDER);
            
            dbc.bindValue(
                            SWTObservables.observeText(text, SWT.Modify),
                            ((SampleWizard) getWizard()).getModel().dateValue);

            GridLayoutFactory.swtDefaults().numColumns(2).generateLayout(
                    composite);
            setControl(composite);
        }
    }

    static class SampleWizardModel {
        IObservableValue intValue = new WritableValue(null, Integer.class);
        IObservableValue dateValue = new WritableValue(null, Date.class);
    }

    static class SampleWizard extends Wizard {

        private SampleWizardModel model = new SampleWizardModel();

        public void addPages() {
            addPage(new FirstWizardPage());
            addPage(new SecondWizardPage());
        }

        public SampleWizardModel getModel() {
            return model;
        }
        
        public String getWindowTitle() {
            return "Data Binding Snippet014";
        }

        public bool performFinish() {
            return true;
        }

    }

    public static void main(String[] args) {
        Display display = new Display();

        // note that the "runWithDefault" will be done for you if you are using
        // the
        // Workbench as opposed to just JFace/SWT.
        Realm.runWithDefault(SWTObservables.getRealm(display), new Runnable() {
            public void run() {
                IWizard wizard = new SampleWizard();
                WizardDialog dialog = new WizardDialog(null, wizard);
                dialog.open();
                // The SWT event loop
                Display display = Display.getCurrent();
                while (dialog.getShell() != null
                        && !dialog.getShell().isDisposed()) {
                    if (!display.readAndDispatch()) {
                        display.sleep();
                    }
                }
            }
        });
    }

}
void main( String[] args ){
    Snippet014WizardDialog.main(args);
}