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

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Here is the source code for ru.ksu.niimm.cll.mocassin.frontend.client.PropertyTreeNode.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.List;

import ru.ksu.niimm.cll.mocassin.frontend.common.client.AsyncCallbackWrapper;

import com.google.gwt.core.client.GWT;
import com.google.gwt.event.logical.shared.SelectionEvent;
import com.google.gwt.uibinder.client.UiBinder;
import com.google.gwt.uibinder.client.UiField;
import com.google.gwt.uibinder.client.UiHandler;
import com.google.gwt.user.client.ui.Composite;
import com.google.gwt.user.client.ui.SuggestOracle.Suggestion;
import com.google.gwt.user.client.ui.TreeItem;
import com.google.gwt.user.client.ui.Widget;

public class PropertyTreeNode extends Composite {

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

    interface PropertyTreeNodeUiBinder extends UiBinder<Widget, PropertyTreeNode> {
    }

    private final OntologyServiceAsync ontologyService = GWT.create(OntologyService.class);
    @UiField
    OntologyElementSuggestBoxPanel suggestBoxPanel;

    TreeItem treeItem;

    public PropertyTreeNode(TreeItem treeItem, OntElement domainConcept) {
        initWidget(uiBinder.createAndBindUi(this));
        this.treeItem = treeItem;
        this.suggestBoxPanel.addSuggestBoxStyleName("property-SuggestBox");
        loadPropertyList(domainConcept);
    }

    @UiHandler("suggestBoxPanel")
    void handleSelect(SelectionEvent<Suggestion> event) {
        treeItem.removeItems();
        TreeItem child = new TreeItem();
        treeItem.addItem(child);
        child.setWidget(new ConceptTreeNode(child));
        child.getTree().setSelectedItem(child);
        child.getTree().ensureSelectedItemVisible();

    }

    private void loadPropertyList(OntElement selectedOntologyElement) {
        AsyncCallbackWrapper<List<OntRelation>> callback = new AsyncCallbackWrapper<List<OntRelation>>() {

            @Override
            public void handleSuccess(List<OntRelation> result) {
                suggestBoxPanel.setSuggestions(result);
            }
        };
        if (selectedOntologyElement instanceof OntConcept) {
            OntConcept selectedConcept = (OntConcept) selectedOntologyElement;
            ontologyService.getRelationList(selectedConcept, callback);
        }

    }

}