org.kalypso.gml.ui.internal.shape.ShapeFileNewFilePage.java Source code

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Here is the source code for org.kalypso.gml.ui.internal.shape.ShapeFileNewFilePage.java

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/*----------------    FILE HEADER KALYPSO ------------------------------------------
 *
 *  This file is part of kalypso.
 *  Copyright (C) 2004 by:
 *
 *  Technical University Hamburg-Harburg (TUHH)
 *  Institute of River and coastal engineering
 *  Denickestrae 22
 *  21073 Hamburg, Germany
 *  http://www.tuhh.de/wb
 *
 *  and
 *
 *  Bjoernsen Consulting Engineers (BCE)
 *  Maria Trost 3
 *  56070 Koblenz, Germany
 *  http://www.bjoernsen.de
 *
 *  This library is free software; you can redistribute it and/or
 *  modify it under the terms of the GNU Lesser General Public
 *  License as published by the Free Software Foundation; either
 *  version 2.1 of the License, or (at your option) any later version.
 *
 *  This library is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 *  Lesser General Public License for more details.
 *
 *  You should have received a copy of the GNU Lesser General Public
 *  License along with this library; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 *  Contact:
 *
 *  E-Mail:
 *  belger@bjoernsen.de
 *  schlienger@bjoernsen.de
 *  v.doemming@tuhh.de
 *
 *  ---------------------------------------------------------------------------*/
package org.kalypso.gml.ui.internal.shape;

import org.eclipse.core.databinding.DataBindingContext;
import org.eclipse.core.databinding.UpdateValueStrategy;
import org.eclipse.core.databinding.observable.value.IObservableValue;
import org.eclipse.core.runtime.IStatus;
import org.eclipse.jface.databinding.swt.ISWTObservableValue;
import org.eclipse.jface.databinding.swt.SWTObservables;
import org.eclipse.jface.databinding.wizard.WizardPageSupport;
import org.eclipse.jface.wizard.WizardPage;
import org.eclipse.swt.SWT;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.Button;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Label;
import org.eclipse.swt.widgets.Text;
import org.eclipse.ui.forms.widgets.Form;
import org.kalypso.commons.databinding.conversion.StringToPathConverter;
import org.kalypso.commons.databinding.validation.MultiValidator;
import org.kalypso.gml.ui.i18n.Messages;

/**
 * Allow user to enter the file path to the new shape file.
 *
 * @author Gernot Belger
 */
public class ShapeFileNewFilePage extends WizardPage {
    private final DataBindingContext m_context = new DataBindingContext();

    private final ShapeFileNewData m_input;

    ShapeFileNewFilePage(final String pageName, final ShapeFileNewData input) {
        super(pageName);

        m_input = input;

        setTitle(Messages.getString("ShapeFileNewFilePage.0")); //$NON-NLS-1$
        setDescription(Messages.getString("ShapeFileNewFilePage.1")); //$NON-NLS-1$
    }

    @Override
    public void createControl(final Composite parent) {
        final Form form = new Form(parent, SWT.NONE);
        form.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true));

        final Composite body = form.getBody();
        body.setLayout(new GridLayout(3, false));

        createContents(body);

        setControl(form);

        WizardPageSupport.create(this, m_context);
    }

    private void createContents(final Composite parent) {
        createFileChooser(parent);
    }

    private void createFileChooser(final Composite parent) {
        final Label label = new Label(parent, SWT.NONE);
        label.setText(Messages.getString("ShapeFileNewPage_2")); //$NON-NLS-1$

        final Text fileField = new Text(parent, SWT.BORDER);
        fileField.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, true, false));
        fileField.setMessage(Messages.getString("ShapeFileNewPage_3")); //$NON-NLS-1$

        final Button fileButton = new Button(parent, SWT.PUSH);
        fileButton.setText(Messages.getString("ShapeFileNewPage_4")); //$NON-NLS-1$

        createFileBinding(fileField, fileButton);
    }

    private void createFileBinding(final Text fileField, final Button fileButton) {
        final ISWTObservableValue fileText = SWTObservables.observeText(fileField, SWT.Modify);
        final IObservableValue pathValue = new ShapePathValue(m_input);

        fileButton.addSelectionListener(
                new FileSaveAsSelectionListener(pathValue, Messages.getString("ShapeFileNewPage_7"))); //$NON-NLS-1$

        final UpdateValueStrategy targetToModel = new UpdateValueStrategy();
        targetToModel.setConverter(new StringToPathConverter());

        final MultiValidator multiValidator = new MultiValidator();
        multiValidator.add(new PathIsProjectValidator(IStatus.ERROR));
        multiValidator.add(new PathIsDirectoryValidator(IStatus.ERROR));
        multiValidator.add(new PathShapeExistsValidator(IStatus.WARNING));
        targetToModel.setBeforeSetValidator(multiValidator);

        final UpdateValueStrategy modelToTarget = new UpdateValueStrategy();
        // AfterGet also works when new dialog sets the new path into the model
        modelToTarget.setAfterGetValidator(multiValidator);

        m_context.bindValue(fileText, pathValue, targetToModel, modelToTarget);
    }
}