/**
 * Copyright (C) 2007 Aelitis, 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.
 *
 * AELITIS, SAS au capital de 63.529,40 euros
 * 8 Allee Lenotre, La Grille Royale, 78600 Le Mesnil le Roi, France.
 *
 */

package com.aelitis.azureus.ui.swt.views;

import org.eclipse.swt.SWT;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.widgets.Canvas;
import org.eclipse.swt.widgets.Composite;

import org.gudy.azureus2.core3.config.COConfigurationManager;
import org.gudy.azureus2.core3.config.impl.TransferSpeedValidator;
import org.gudy.azureus2.core3.global.GlobalManager;
import org.gudy.azureus2.core3.global.GlobalManagerStats;
import org.gudy.azureus2.core3.util.SimpleTimer;
import org.gudy.azureus2.core3.util.TimerEvent;
import org.gudy.azureus2.core3.util.TimerEventPerformer;
import org.gudy.azureus2.core3.util.TimerEventPeriodic;
import org.gudy.azureus2.ui.swt.Messages;
import org.gudy.azureus2.ui.swt.Utils;
import org.gudy.azureus2.ui.swt.components.graphics.SpeedGraphic;
import org.gudy.azureus2.ui.swt.plugins.UISWTView;
import org.gudy.azureus2.ui.swt.plugins.UISWTViewEvent;
import org.gudy.azureus2.ui.swt.pluginsimpl.UISWTViewCoreEventListener;

import com.aelitis.azureus.core.AzureusCore;
import com.aelitis.azureus.core.AzureusCoreRunningListener;
import com.aelitis.azureus.core.AzureusCoreFactory;

/**
 * @author TuxPaper
 * @created Apr 7, 2007
 *
 */
public class ViewUpSpeedGraph
	implements UISWTViewCoreEventListener
{

	GlobalManager manager = null;

	GlobalManagerStats stats = null;

	Canvas upSpeedCanvas;

	SpeedGraphic upSpeedGraphic;

	TimerEventPeriodic	timerEvent;
	
	private boolean everRefreshed = false;

	private UISWTView swtView;

	public ViewUpSpeedGraph() {
		AzureusCoreFactory.addCoreRunningListener(new AzureusCoreRunningListener() {
			public void azureusCoreRunning(AzureusCore core) {
				manager = core.getGlobalManager();
				stats = manager.getStats();
			}
		});
	}

	private void initialize(Composite composite) {
		GridData gridData;

		upSpeedCanvas = new Canvas(composite, SWT.DOUBLE_BUFFERED);
		gridData = new GridData(GridData.FILL_BOTH);
		upSpeedCanvas.setLayoutData(gridData);
		upSpeedGraphic = SpeedGraphic.getInstance();
		upSpeedGraphic.initialize(upSpeedCanvas);
		//upSpeedGraphic.setAutoAlpha(true);
	}
	
	private void periodicUpdate() {
		if (stats == null || manager == null) {
			return;
		}

		int swarms_peer_speed = (int) stats.getTotalSwarmsPeerRate(true, false);

		upSpeedGraphic.addIntsValue(new int[] {
			stats.getDataSendRate() + stats.getProtocolSendRate(),
			stats.getProtocolSendRate(),
			COConfigurationManager.getIntParameter(TransferSpeedValidator.getActiveUploadParameter(manager)) * 1024,
			swarms_peer_speed
		});
	}

	private void delete() {
		Utils.disposeComposite(upSpeedCanvas);
		upSpeedGraphic.dispose();
	}

	private String getFullTitle() {
		return "UL Speed";
	}

	private Composite getComposite() {
		return upSpeedCanvas;
	}

	private void refresh() {
		if (!everRefreshed) {
			everRefreshed = true;
			timerEvent = SimpleTimer.addPeriodicEvent("TopBarSpeedGraphicView", 1000, new TimerEventPerformer() {
				public void perform(TimerEvent event) {
					if ( upSpeedCanvas.isDisposed()){
						timerEvent.cancel();
					}else{
						periodicUpdate();
					}
				}
			});
		}
		upSpeedGraphic.refresh(false);
	}

	public boolean eventOccurred(UISWTViewEvent event) {
    switch (event.getType()) {
      case UISWTViewEvent.TYPE_CREATE:
      	swtView = (UISWTView)event.getData();
      	swtView.setTitle(getFullTitle());
        break;

      case UISWTViewEvent.TYPE_DESTROY:
        delete();
        break;

      case UISWTViewEvent.TYPE_INITIALIZE:
        initialize((Composite)event.getData());
        break;

      case UISWTViewEvent.TYPE_LANGUAGEUPDATE:
      	Messages.updateLanguageForControl(getComposite());
      	swtView.setTitle(getFullTitle());
        break;

      case UISWTViewEvent.TYPE_REFRESH:
        refresh();
        break;
    }

    return true;
  }
}