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

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Here is the source code for ru.ksu.niimm.cll.mocassin.frontend.client.QueryTree.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 com.google.gwt.core.client.GWT;
import com.google.gwt.uibinder.client.UiBinder;
import com.google.gwt.uibinder.client.UiField;
import com.google.gwt.user.client.ui.Composite;
import com.google.gwt.user.client.ui.Tree;
import com.google.gwt.user.client.ui.TreeItem;
import com.google.gwt.user.client.ui.VerticalPanel;

public class QueryTree extends Composite {

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

    interface QueryTreeUiBinder extends UiBinder<VerticalPanel, QueryTree> {
    }

    @UiField
    Tree tree;

    public QueryTree() {
        initWidget(uiBinder.createAndBindUi(this));
        initializeRoot();
    }

    private void initializeRoot() {
        TreeItem root = new TreeItem();
        this.tree.addItem(root);
        root.setWidget(new ConceptTreeNode(root));
    }

    public void clearTree() {
        tree.clear();
        initializeRoot();
    }

    public TreeItem getRoot() {
        return tree.getItem(0);
    }

}