org.lunifera.runtime.web.vaadin.components.fields.search.BooleanSearchField.java Source code

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Here is the source code for org.lunifera.runtime.web.vaadin.components.fields.search.BooleanSearchField.java

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/**
 * Copyright (c) 2011 - 2015, Lunifera GmbH (Gross Enzersdorf), Loetz KG (Heidelberg)
 * 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:
 *         Florian Pirchner - Initial implementation
 */
package org.lunifera.runtime.web.vaadin.components.fields.search;

import org.eclipse.core.databinding.Binding;
import org.eclipse.core.databinding.DataBindingContext;
import org.eclipse.core.databinding.beans.PojoObservables;
import org.lunifera.runtime.web.vaadin.components.fields.search.filter.BooleanFilterProperty;
import org.lunifera.runtime.web.vaadin.components.fields.search.filter.BooleanFilterProperty.OptionBean;
import org.lunifera.runtime.web.vaadin.components.fields.search.filter.IFilterProperty;
import org.lunifera.runtime.web.vaadin.databinding.VaadinObservables;

import com.vaadin.data.Container.Filter;
import com.vaadin.data.util.BeanItemContainer;
import com.vaadin.data.util.ObjectProperty;
import com.vaadin.ui.ComboBox;
import com.vaadin.ui.Component;

@SuppressWarnings("serial")
public class BooleanSearchField extends SearchField<BooleanFilterProperty.OptionBean> {

    private Binding selectionBinding;
    private Binding collectionBinding;
    private BooleanFilterProperty filterProperty;

    public BooleanSearchField(String id, Object propertyId, DataBindingContext dbContext) {
        super(id, propertyId, dbContext);

        filterProperty = new BooleanFilterProperty(getPropertyId(), getLocale());
    }

    @Override
    protected Component initContent() {

        ComboBox combo = new ComboBox();
        combo.setImmediate(true);
        combo.setNullSelectionAllowed(false);
        combo.setItemCaptionPropertyId("description");

        // Create the container
        BeanItemContainer<BooleanFilterProperty.OptionBean> container = new BeanItemContainer<BooleanFilterProperty.OptionBean>(
                BooleanFilterProperty.OptionBean.class);
        container.addAll(filterProperty.getOptions());
        combo.setContainerDataSource(container);

        // Create the property
        ObjectProperty<BooleanFilterProperty.OptionBean> property = new ObjectProperty<BooleanFilterProperty.OptionBean>(
                filterProperty.getDefaultOption(), BooleanFilterProperty.OptionBean.class, false);
        combo.setPropertyDataSource(property);

        // Create the bindings
        DataBindingContext dbContext = getDbContext();
        selectionBinding = dbContext.bindValue(VaadinObservables.observeValue(combo),
                PojoObservables.observeValue(filterProperty, IFilterProperty.PROP_SELECTION));
        collectionBinding = dbContext.bindList(
                VaadinObservables.observeContainerItemSetContents(combo, OptionBean.class),
                PojoObservables.observeList(filterProperty, IFilterProperty.PROP_OPTIONS));

        return combo;
    }

    @Override
    public Class<? extends BooleanFilterProperty.OptionBean> getType() {
        return BooleanFilterProperty.OptionBean.class;
    }

    @Override
    public Filter getFilter() {
        return filterProperty.getFilter();
    }

    /**
     * Dispose the field.
     */
    public void dispose() {

        filterProperty = null;

        if (selectionBinding != null) {
            selectionBinding.dispose();
            selectionBinding = null;
        }

        if (collectionBinding != null) {
            collectionBinding.dispose();
            collectionBinding = null;
        }
    }

}