StringItemRenderer.java

/*******************************************************************************
 * Copyright (c) 2012-2017 Codenvy, S.A.
 * 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:
 *   Codenvy, S.A. - initial API and implementation
 *******************************************************************************/
package org.eclipse.che.ide.ui.dropdown;

import com.google.gwt.user.client.ui.Label;
import com.google.gwt.user.client.ui.Widget;

import static com.google.gwt.dom.client.Style.Unit.PX;

/**
 * Renders the given {@link BaseListItem} as {@link Label}.
 *
 * @see BaseListItem
 */
public class StringItemRenderer implements DropdownListItemRenderer {

    private final BaseListItem<String> item;

    private Widget headerWidget;
    private Widget listWidget;

    public StringItemRenderer(BaseListItem<String> item) {
        this.item = item;
    }

    @Override
    public Widget renderHeaderWidget() {
        if (headerWidget == null) {
            headerWidget = new Label(item.getValue());
        }

        return headerWidget;
    }

    @Override
    public Widget renderListWidget() {
        if (listWidget == null) {
            listWidget = new Label(item.getValue());
            listWidget.getElement().getStyle().setMarginBottom(0, PX);
        }

        return listWidget;
    }
}