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/*
 * ===========================================
 * Java Pdf Extraction Decoding Access Library
 * ===========================================
 *
 * Project Info:  http://www.idrsolutions.com
 * Help section for developers at http://www.idrsolutions.com/java-pdf-library-support/
 *
 * (C) Copyright 1997-2013, IDRsolutions and Contributors.
 *
 * 	This file is part of JPedal
 *
     This library 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 2.1 of the License, or (at your option) any later version.

    This library 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 this library; if not, write to the Free Software
    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA


 *
 * ---------------
 * SingleViewTransferHandler.java
 * ---------------
 */
package org.jpedal.examples.viewer.gui;

import java.awt.datatransfer.Transferable;
import java.io.File;
import java.util.List;

import javax.swing.JComponent;

import org.jpedal.examples.viewer.Commands;
import org.jpedal.examples.viewer.Values;
import org.jpedal.examples.viewer.gui.generic.GUIThumbnailPanel;
import org.jpedal.exception.PdfException;

public class SingleViewTransferHandler extends BaseTransferHandler {

	private static final long serialVersionUID = 1261205449129510134L;

	public SingleViewTransferHandler(Values commonValues, GUIThumbnailPanel thumbnails, SwingGUI currentGUI, Commands currentCommands) {
		super(commonValues, thumbnails, currentGUI, currentCommands);
	}

	@Override
	public boolean importData(JComponent src, Transferable transferable) {
		try {
			Object dragImport = getImport(transferable);

			if (dragImport instanceof String) {
				String url = (String) dragImport;

				if (url.indexOf("file:/") != url.lastIndexOf("file:/")) // make sure only one url is in the String
				this.currentGUI.showMessageDialog("You may only import 1 file at a time");
				else openFile(url);
			}
			else
				if (dragImport instanceof List) {
					List files = (List) dragImport;

					// System.out.println("list = " + list);
					if (files.size() == 1) { // we can process
						File file = (File) files.get(0);
						openFile(file.getAbsolutePath());
					}
					else {
						this.currentGUI.showMessageDialog("You may only import 1 file at a time");
					}
				}
		}
		catch (Exception e) {
			return false;
		}

		return true;
	}

	protected void openFile(String file) throws PdfException {
		String testFile = file.toLowerCase();

		boolean isValid = ((testFile.endsWith(".pdf")) || (testFile.endsWith(".fdf")) || (testFile.endsWith(".tif")) || (testFile.endsWith(".tiff"))
				|| (testFile.endsWith(".png")) || (testFile.endsWith(".jpg")) || (testFile.endsWith(".jpeg")));

		if (isValid) {
			this.currentCommands.openTransferedFile(file);
		}
		else {
			this.currentGUI.showMessageDialog("You may only import a valid PDF or image");
		}
	}
}