/*
 * Created on 23-Apr-2004
 * Created by Paul Gardner
 * Copyright (C) Azureus Software, Inc, All Rights Reserved.
 *
 * 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, or (at your option) any later version.
 * 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.
 * 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.associations;

/**
 * @author parg
 *
 */

import org.eclipse.swt.SWT;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.*;

import org.gudy.azureus2.core3.config.COConfigurationManager;
import org.gudy.azureus2.core3.internat.MessageText;
import org.gudy.azureus2.core3.util.AERunnable;
import org.gudy.azureus2.core3.util.Debug;
import org.gudy.azureus2.platform.PlatformManager;
import org.gudy.azureus2.platform.PlatformManagerCapabilities;
import org.gudy.azureus2.platform.PlatformManagerFactory;
import org.gudy.azureus2.ui.swt.Messages;
import org.gudy.azureus2.ui.swt.Utils;
import org.gudy.azureus2.ui.swt.components.shell.ShellFactory;
import org.gudy.azureus2.ui.swt.mainwindow.SWTThread;

import org.gudy.azureus2.plugins.platform.PlatformManagerException;

public class 
AssociationChecker 
{
	public static void
	checkAssociations()
	{  
		try{
	
		    PlatformManager	platform  = PlatformManagerFactory.getPlatformManager();
		    
		    if ( platform.hasCapability(PlatformManagerCapabilities.RegisterFileAssociations) ){
	    	
		    	if ( COConfigurationManager.getBooleanParameter( "config.interface.checkassoc")){
		    		
		    		if ( !platform.isApplicationRegistered()){
		    		
		    			new AssociationChecker(  platform );
		    		}
		    	}
		    }
		}catch( Throwable e ){
			
			// Debug.printStackTrace( e );
		}
	}
	
	protected PlatformManager	platform;
	protected Display			display;
	protected Shell				shell;
	

	protected
	AssociationChecker(
		final PlatformManager		_platform )
	{
		platform	= _platform;
		
		display = SWTThread.getInstance().getDisplay();
							
		if ( display.isDisposed()){
								
			return;
		}
							
		Utils.execSWTThread(
				new AERunnable()
				{
					public void
					runSupport()
					{
						check();
					}
				});
	}
	
	protected void
	check()
	{
		if (display.isDisposed())
			return;

 		shell = ShellFactory.createMainShell(SWT.DIALOG_TRIM);
 	
 		Utils.setShellIcon(shell);
	 	shell.setText(MessageText.getString("dialog.associations.title"));
		
	 	GridLayout layout = new GridLayout();
	 	layout.numColumns = 3;
	        
	 	shell.setLayout (layout);
    
	 	GridData gridData;
    
	 		// text
	 	
		Label user_label = new Label(shell,SWT.NULL);
		Messages.setLanguageText(user_label, "dialog.associations.prompt");
		gridData = new GridData(GridData.FILL_BOTH);
		gridData.horizontalSpan = 3;
		user_label.setLayoutData(gridData);


	    final Button checkBox = new Button(shell, SWT.CHECK);
	    checkBox.setSelection(true);
		gridData = new GridData(GridData.FILL_BOTH);
		gridData.horizontalSpan = 3;
		checkBox.setLayoutData(gridData);
		Messages.setLanguageText(checkBox, "dialog.associations.askagain"); 
		
		// line
		
		Label labelSeparator = new Label(shell,SWT.SEPARATOR | SWT.HORIZONTAL);
		gridData = new GridData(GridData.FILL_HORIZONTAL);
		gridData.horizontalSpan = 3;
		labelSeparator.setLayoutData(gridData);

			// buttons
			
		new Label(shell,SWT.NULL);

		Button bYes = new Button(shell,SWT.PUSH);
	 	bYes.setText(MessageText.getString("Button.yes"));
	 	gridData = new GridData(GridData.FILL_HORIZONTAL | GridData.HORIZONTAL_ALIGN_END | GridData.HORIZONTAL_ALIGN_FILL);
	 	gridData.grabExcessHorizontalSpace = true;
	 	gridData.widthHint = 70;
	 	bYes.setLayoutData(gridData);
	 	bYes.addListener(SWT.Selection,new Listener() {
	  		public void handleEvent(Event e) {
		 		close(true, checkBox.getSelection());
	   		}
		 });
    
	 	Button bNo = new Button(shell,SWT.PUSH);
	 	bNo.setText(MessageText.getString("Button.no"));
	 	gridData = new GridData(GridData.HORIZONTAL_ALIGN_END);
	 	gridData.grabExcessHorizontalSpace = false;
	 	gridData.widthHint = 70;
	 	bNo.setLayoutData(gridData);    
	 	bNo.addListener(SWT.Selection,new Listener() {
	 		public void handleEvent(Event e) {
		 		close(false, checkBox.getSelection());
	   		}
	 	});

	 	bYes.setFocus();
		shell.setDefaultButton( bYes );
		
		shell.addListener(SWT.Traverse, new Listener() {	
			public void handleEvent(Event e) {
				if ( e.character == SWT.ESC){
					close( false, true );
				}
			}
		});

	
	 	shell.pack ();
	 	
		Utils.centreWindow( shell );

		shell.open ();
		
		/*
		 * parg - removed this as causing UI hang when assoc checker and key-unlock dialogs
		 * open together
		while (!shell.isDisposed()) {
			if (!display.readAndDispatch()) {
				display.sleep();
			}
		}
		*/
	}
					   
	protected void
	close(
		boolean		ok,
		boolean		check_on_startup )
 	{
    	if ( check_on_startup != COConfigurationManager.getBooleanParameter( "config.interface.checkassoc" )){
    		
    		COConfigurationManager.setParameter( "config.interface.checkassoc",check_on_startup );
    		
    		COConfigurationManager.save();
    	}

 		if ( ok ){
 			
 			try{				
 				platform.registerApplication();
 				
 			}catch( PlatformManagerException e ){
 				
 				Debug.printStackTrace( e );
 			}
 		}
 		
 		shell.dispose();
 	}
}
