/*
 * File    : ImportTorrentWizardInputPanel.java
 * Created : 14-Oct-2003
 * By      : stuff
 * 
 * Azureus - a Java Bittorrent client
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License.
 *
 * This program 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 General Public License for more details ( see the LICENSE file ).
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

package org.gudy.azureus2.ui.swt.importtorrent.wizard;

/**
 * @author parg
 *
 */

import java.io.File;

import org.eclipse.swt.SWT;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.Button;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.FileDialog;
import org.eclipse.swt.widgets.Event;
import org.eclipse.swt.widgets.Label;
import org.eclipse.swt.widgets.Listener;
import org.eclipse.swt.widgets.Text;
import org.gudy.azureus2.core3.internat.MessageText;
import org.gudy.azureus2.core3.util.Constants;
import org.gudy.azureus2.ui.swt.Messages;
import org.gudy.azureus2.ui.swt.wizard.*;

public class 
ImportTorrentWizardInputPanel 
	extends AbstractWizardPanel
{
	protected boolean file_valid = false;
	
	  public 
	ImportTorrentWizardInputPanel(
		Wizard 					wizard, 
		IWizardPanel 			previous ) 
	  {
		super(wizard, previous);
	  }
  
  
	  public void 
	  show() 
	  {
		wizard.setTitle(MessageText.getString("importTorrentWizard.importfile.title"));
		
		Composite rootPanel = wizard.getPanel();
		GridLayout layout = new GridLayout();
		layout.numColumns = 1;
		rootPanel.setLayout(layout);
	
		Composite panel = new Composite(rootPanel, SWT.NULL);
		GridData gridData = new GridData(GridData.VERTICAL_ALIGN_CENTER | GridData.FILL_HORIZONTAL);
		panel.setLayoutData(gridData);
		layout = new GridLayout();
		layout.numColumns = 3;
		panel.setLayout(layout);
	
		Label label = new Label(panel, SWT.WRAP);
		gridData = new GridData();
		gridData.horizontalSpan = 3;
		gridData.widthHint = 380;
		label.setLayoutData(gridData);
		Messages.setLanguageText(label, "importTorrentWizard.importfile.message");
	
		label = new Label(panel,SWT.NULL);
		Messages.setLanguageText(label, "importTorrentWizard.importfile.path");
	
		final Text textPath = new Text(panel,SWT.BORDER);
		gridData = new GridData(GridData.FILL_HORIZONTAL);
		textPath.setLayoutData(gridData);
		textPath.setText("");
	
		Button browse = new Button(panel,SWT.PUSH);
		Messages.setLanguageText(browse, "importTorrentWizard.importfile.browse");
		browse.addListener(SWT.Selection,new Listener() {
		  public void handleEvent(Event arg0) {
		  	
			FileDialog fd = new FileDialog(wizard.getWizardWindow());
			
			fd.setFileName(textPath.getText());
			
			fd.setFilterExtensions(new String[]{"*.xml", Constants.FILE_WILDCARD});
			
			String path = fd.open();
			
			if(path != null) {
				
			  textPath.setText(path);		  
			}     
		  }
		});
	
		textPath.addListener(SWT.Modify, new Listener(){
			
		  public void handleEvent(Event event) {
		  	
			String path = textPath.getText();
			
			((ImportTorrentWizard)wizard).setImportFile( path );

			file_valid = false;	  
			
			try{
				
			  File f = new File(path);
			  
			  if( f.exists()){
			  	
			  	if (f.isFile()){
			  		
			  		file_valid = true;
			  		
					wizard.setErrorMessage("");
			  	}else{
			  		
					wizard.setErrorMessage(MessageText.getString("importTorrentWizard.importfile.invalidPath"));
			  	}            
			  }
			  
			}catch(Exception e){
			  wizard.setErrorMessage(MessageText.getString("importTorrentWizard.importfile.invalidPath"));
			}
			
			wizard.setNextEnabled( file_valid );
		  }
		});

		textPath.setText(((ImportTorrentWizard)wizard).getImportFile());
		
		textPath.setFocus();
	}

	public IWizardPanel 
	getNextPanel()
	{  
		return( new ImportTorrentWizardOutputPanel(wizard,this));
	}
	
	public boolean 
	isNextEnabled() 
	{
	   return( file_valid );
	}
}