ru.ksu.niimm.cll.mocassin.frontend.client.OntologyElementSuggestBoxPanel.java Source code

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Here is the source code for ru.ksu.niimm.cll.mocassin.frontend.client.OntologyElementSuggestBoxPanel.java

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/*******************************************************************************
 * Copyright (c) 2010-2012 Nikita Zhiltsov.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the GNU Public License v3.0
 * which accompanies this distribution, and is available at
 * http://www.gnu.org/licenses/gpl.html
 * 
 * Contributors:
 *     Nikita Zhiltsov - initial API and implementation
 *     Azat Khasanshin - implementation
 ******************************************************************************/
package ru.ksu.niimm.cll.mocassin.frontend.client;

import java.util.Collection;

import ru.ksu.niimm.cll.mocassin.frontend.client.widget.suggestbox.OntologyElementOracle;
import ru.ksu.niimm.cll.mocassin.frontend.client.widget.suggestbox.OntologyElementSuggestBox;
import ru.ksu.niimm.cll.mocassin.frontend.client.widget.suggestbox.OntologyElementSuggestion;

import com.google.gwt.core.client.GWT;
import com.google.gwt.event.logical.shared.SelectionEvent;
import com.google.gwt.event.logical.shared.SelectionHandler;
import com.google.gwt.event.shared.HandlerRegistration;
import com.google.gwt.uibinder.client.UiBinder;
import com.google.gwt.user.client.ui.Composite;
import com.google.gwt.user.client.ui.HorizontalPanel;
import com.google.gwt.user.client.ui.SuggestOracle.Suggestion;

public class OntologyElementSuggestBoxPanel extends Composite implements SelectionHandler<Suggestion> {
    interface OntologyElementSuggestBoxUiBinder extends UiBinder<HorizontalPanel, OntologyElementSuggestBoxPanel> {
    }

    private static OntologyElementSuggestBoxUiBinder uiBinder = GWT.create(OntologyElementSuggestBoxUiBinder.class);

    private OntologyElementSuggestBox suggestBox;

    private OntElement selectedElement;

    public OntologyElementSuggestBoxPanel() {
        this.suggestBox = new OntologyElementSuggestBox(new OntologyElementOracle());
        HorizontalPanel panel = uiBinder.createAndBindUi(this);
        panel.add(suggestBox);
        suggestBox.addSelectionHandler(this);
        initWidget(panel);
    }

    public HandlerRegistration addSelectionHandler(SelectionHandler<Suggestion> handler) {
        return suggestBox.addSelectionHandler(handler);
    }

    public void setSuggestions(Collection<? extends OntElement> ontElements) {
        suggestBox.getOracle().setOntologyElements(ontElements);
    }

    public OntElement getSelectedValue() {
        String text = suggestBox.getText();
        if (this.selectedElement == null) {
            this.selectedElement = text == null || text.equals("") ? new OntBlankNode() : new OntLiteral(text);
        } else if (this.selectedElement instanceof OntLiteral) {
            this.selectedElement.setLabel(text);
        }
        return this.selectedElement;
    }

    public void addSuggestBoxStyleName(String style) {
        suggestBox.addStyleName(style);
    }

    public void showSuggestionList() {
        suggestBox.showSuggestionList();
    }

    @Override
    public void onSelection(SelectionEvent<Suggestion> event) {
        Suggestion selectedItem = event.getSelectedItem();
        if (selectedItem instanceof OntologyElementSuggestion) {

            OntologyElementSuggestion selectedOntSuggestion = (OntologyElementSuggestion) selectedItem;
            this.selectedElement = selectedOntSuggestion.getOntologyElement();
        }
    }

}