eu.esdihumboldt.hale.ui.common.editors.BooleanEditor.java Source code

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Here is the source code for eu.esdihumboldt.hale.ui.common.editors.BooleanEditor.java

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/*
 * Copyright (c) 2012 Data Harmonisation Panel
 * 
 * All rights reserved. This program and the accompanying materials are made
 * available under the terms of the GNU Lesser General Public License as
 * published by the Free Software Foundation, either version 3 of the License,
 * or (at your option) any later version.
 * 
 * You should have received a copy of the GNU Lesser General Public License
 * along with this distribution. If not, see <http://www.gnu.org/licenses/>.
 * 
 * Contributors:
 *     HUMBOLDT EU Integrated Project #030962
 *     Data Harmonisation Panel <http://www.dhpanel.eu>
 */

package eu.esdihumboldt.hale.ui.common.editors;

import org.eclipse.jface.viewers.ArrayContentProvider;
import org.eclipse.jface.viewers.ComboViewer;
import org.eclipse.jface.viewers.ISelectionChangedListener;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.jface.viewers.LabelProvider;
import org.eclipse.jface.viewers.SelectionChangedEvent;
import org.eclipse.jface.viewers.StructuredSelection;
import org.eclipse.swt.SWT;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Control;

import eu.esdihumboldt.hale.common.align.model.ParameterValue;
import eu.esdihumboldt.hale.ui.common.Editor;

/**
 * Attribute editor for boolean values
 * 
 * @author Simon Templer
 * @partner 01 / Fraunhofer Institute for Computer Graphics Research
 */
public class BooleanEditor extends AbstractEditor<Boolean> {

    private Boolean value;
    private final ComboViewer combo;

    /**
     * Create a boolean attribute editor
     * 
     * @param parent the parent composite
     */
    public BooleanEditor(Composite parent) {
        super();

        combo = new ComboViewer(parent, SWT.READ_ONLY);
        combo.setContentProvider(ArrayContentProvider.getInstance());
        combo.setLabelProvider(new LabelProvider());
        combo.setInput(new Object[] { Boolean.TRUE, Boolean.FALSE });

        // default selection
        combo.setSelection(new StructuredSelection(Boolean.FALSE));
        value = Boolean.FALSE;
        combo.addSelectionChangedListener(new ISelectionChangedListener() {

            @Override
            public void selectionChanged(SelectionChangedEvent event) {
                Boolean newValue = (Boolean) ((IStructuredSelection) event.getSelection()).getFirstElement();
                fireValueChanged(VALUE, value, newValue);
                value = newValue;
            }
        });
    }

    /**
     * @see Editor#getAsText()
     */
    @Override
    public String getAsText() {
        return getValue().toString();
    }

    /**
     * @see Editor#getControl()
     */
    @Override
    public Control getControl() {
        return combo.getControl();
    }

    /**
     * @see Editor#getValue()
     */
    @Override
    public Boolean getValue() {
        return (Boolean) ((IStructuredSelection) combo.getSelection()).getFirstElement();
    }

    /**
     * @see Editor#setAsText(String)
     */
    @Override
    public void setAsText(String text) {
        setValue(Boolean.parseBoolean(text));
    }

    /**
     * @see Editor#setValue(Object)
     */
    @Override
    public void setValue(Boolean value) {
        combo.setSelection(new StructuredSelection(value));
    }

    /**
     * @see Editor#isValid()
     */
    @Override
    public boolean isValid() {
        return true;
    }

    /**
     * @see eu.esdihumboldt.hale.ui.common.Editor#getValueType()
     */
    @Override
    public String getValueType() {
        return ParameterValue.DEFAULT_TYPE;
    }
}