edu.ucla.loni.pipeline.client.Upload.Features.LONIDragandDropLabel.java Source code

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Here is the source code for edu.ucla.loni.pipeline.client.Upload.Features.LONIDragandDropLabel.java

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/*
 * This file is part of LONI Pipeline Web-based Server Terminal.
 * 
 * LONI Pipeline Web-based Server Terminal is free software: 
 * you can redistribute it and/or modify it under the terms of the 
 * GNU Lesser General Public License as published by the Free Software 
 * Foundation, either version 3 of the License, or (at your option)
 * any later version.
 *
 * LONI Pipeline Web-based Server Terminal is distributed in the hope 
 * that it will be useful, but WITHOUT ANY WARRANTY; without even the 
 * implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  
 * See the GNU Lesser General Public License for more details.
    
 * You should have received a copy of the GNU Lesser General Public License
 * along with LONI Pipeline Web-based Server Terminal.
 * If not, see <http://www.gnu.org/licenses/>.
 */

package edu.ucla.loni.pipeline.client.Upload.Features;

import java.util.Map;

import org.moxieapps.gwt.uploader.client.Uploader;

import com.google.gwt.user.client.ui.Image;
import com.google.gwt.user.client.ui.Label;
import com.smartgwt.client.widgets.layout.VLayout;

import edu.ucla.loni.pipeline.client.Upload.Handlers.LONIDragLeaveHandler;
import edu.ucla.loni.pipeline.client.Upload.Handlers.LONIDragOverHandler;
import edu.ucla.loni.pipeline.client.Upload.Handlers.LONIDropHandler;

/**
 * Constructs a Drag and Drop Label for the Web interface
 */
public class LONIDragandDropLabel extends Label {

    private final Uploader uploader;
    private final Map<String, Image> cancelButtons;
    private final VLayout layoutUploads;

    /**
     * Constructor
     * 
     * @param labelString
     * @param uploader
     * @param cancelButtons
     * @param layoutUploads
     */
    public LONIDragandDropLabel(String labelString, Uploader uploader, Map<String, Image> cancelButtons,
            VLayout layoutUploads) {
        super(labelString);

        this.uploader = uploader;
        this.cancelButtons = cancelButtons;
        this.layoutUploads = layoutUploads;

        configure();
        addHandlers();
    }

    /**
     * Configures the Drag and Drop Label
     * 
     * @return success
     */
    private boolean configure() {
        setStyleName("dropFilesLabel");

        return true;
    }

    /**
     * Adds Event Handlers to the Drag and Drop Label
     * 
     * @return success
     */
    private boolean addHandlers() {
        addDragOverHandler(new LONIDragOverHandler(this));

        addDragLeaveHandler(new LONIDragLeaveHandler(this));

        addDropHandler(new LONIDropHandler(uploader, cancelButtons, layoutUploads, this));

        return true;
    }
}