package net.sourceforge.phpdt.sql.actions;

import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;

import org.apache.crimson.tree.XmlDocument;
import org.eclipse.jface.action.IAction;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.swt.SWT;
import org.eclipse.swt.widgets.FileDialog;
import org.eclipse.ui.IViewActionDelegate;
import org.eclipse.ui.IViewPart;
import org.w3c.dom.Element;

import net.sourceforge.phpdt.sql.Messages;
import net.sourceforge.phpdt.sql.view.BookmarkView;
import net.sourceforge.phpdt.sql.view.bookmark.BookmarkContentProvider;

/**
 * @author root
 * Asks the user for a file name and saves there the bookmarks in xml format 
 */
public class ExportBookmarksAction
	implements IViewActionDelegate {
		
	BookmarkView view;
	FileDialog dialog;

	/**
	 * @see org.eclipse.ui.IViewActionDelegate#init(IViewPart)
	 */
	public void init(IViewPart view) {
		this.view = (BookmarkView) view;
		dialog = new FileDialog(view.getSite().getShell(), SWT.SAVE);
		dialog.setFilterExtensions(new String[]{"*.xml","*.*"}); //$NON-NLS-1$ //$NON-NLS-2$
		dialog.setFilterNames(new String[]{Messages.getString("filedialog.xmlFiles"),Messages.getString("filedialog.xmlFiles")}); //$NON-NLS-1$ //$NON-NLS-2$
	}

	/**
	 * @see org.eclipse.ui.IActionDelegate#run(IAction)
	 */
	public void run(IAction action) {
		String filename = dialog.open();
		if (filename != null) {
			/*Check for the presence of a "." - either indicates an
			 * extension has been provided or that a filename with a '.'
			 * has been specified - if the latter, it is assumed the user
			 * knows what they're doing - could be dangerous! :-)
			 */
			if (filename.indexOf(".") ==0) filename += ".xml";
						
			File target = new File(filename);
			XmlDocument doc = new XmlDocument();
			FileOutputStream out = null;
			try {
				out = new FileOutputStream(target);
			} catch (FileNotFoundException e1) {
				e1.printStackTrace();
				return;
			}
			Element root = (Element) doc.appendChild(doc.createElement(Messages.getString("ExportXMLAction.SavedData"))); //$NON-NLS-1$
		
			BookmarkContentProvider.getInstance().exportXML(root);
		
			try {
				doc.write(out);
				out.close();
			} catch (IOException e) {
				e.printStackTrace();
			}


		}
	}
	
	/**
	 * @see org.eclipse.ui.IActionDelegate#selectionChanged(IAction, ISelection)
	 */
	public void selectionChanged(IAction action, ISelection selection) {
	}

}