RCPUtil.java

/**
 * Warlock, the open-source cross-platform game client
 *  
 * Copyright 2008, Warlock LLC, and individual contributors as indicated
 * by the @authors tag. 
 *
 * This 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 software 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 software; if not, write to the Free
 * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
 * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
 */
package cc.warlock.rcp.util;

import java.io.BufferedInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStream;
import java.net.MalformedURLException;
import java.net.URL;

import javax.sound.sampled.AudioFileFormat;
import javax.sound.sampled.AudioInputStream;
import javax.sound.sampled.AudioSystem;
import javax.sound.sampled.Clip;
import javax.sound.sampled.LineEvent;
import javax.sound.sampled.LineListener;
import javax.sound.sampled.LineUnavailableException;
import javax.sound.sampled.UnsupportedAudioFileException;

import org.eclipse.jface.preference.PreferenceDialog;
import org.eclipse.swt.widgets.Display;
import org.eclipse.ui.IPerspectiveDescriptor;
import org.eclipse.ui.IWorkbenchPage;
import org.eclipse.ui.PartInitException;
import org.eclipse.ui.PlatformUI;
import org.eclipse.ui.dialogs.PreferencesUtil;

import cc.warlock.core.client.IWarlockClient;
import cc.warlock.rcp.ui.client.WarlockClientAdaptable;
import cc.warlock.rcp.views.GameView;

public class RCPUtil {
	
	public static void openURL (String url)
	{
		try {
			PlatformUI.getWorkbench().getBrowserSupport().getExternalBrowser().openURL(new URL(url));
		} catch (PartInitException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		} catch (MalformedURLException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
	}
	
	public static void openPerspective (String perspectiveId)
	{
		IWorkbenchPage page = PlatformUI.getWorkbench().getActiveWorkbenchWindow().getActivePage();
		IPerspectiveDescriptor perspective =
			PlatformUI.getWorkbench().getPerspectiveRegistry().findPerspectiveWithId(perspectiveId);
		
		page.setPerspective(perspective);
	}
	
	public static int getPixelSizeInPoints (int pixelSize)
	{
		double points = pixelSize * (72.0/96.0);
		return (int) Math.round(points);
	}
	
	public static int getPointSizeInPixels (int pointSize)
	{
		double pixels = pointSize * (96.0/72.0);
		
		return (int) Math.round(pixels);
	}
	
	private static class Flag {
		public boolean value;
	}
	
	public static void playSound (InputStream soundStream)
	{
		try {
			Clip clip = AudioSystem.getClip();
			
			BufferedInputStream bufferedStream = new BufferedInputStream(soundStream);
			AudioFileFormat format = AudioSystem.getAudioFileFormat(bufferedStream);
			
			final Flag finished = new Flag();
			finished.value = false;
			final AudioInputStream stream = new AudioInputStream(bufferedStream, format.getFormat(), format.getFrameLength()); 
			clip.open(stream);
			clip.addLineListener(new LineListener() {
				public void update(LineEvent event) {
					if (event.getType() == LineEvent.Type.STOP) {
						try {
							stream.close();
							finished.value = true;
						} catch (IOException e) {
							// TODO Auto-generated catch block
							e.printStackTrace();
						}
					}
				}
			});
			clip.start();
			
			while (!finished.value) {
				if (Display.getDefault() != null) {
					Display.getDefault().readAndDispatch();
				} else {
					Thread.sleep((long)500);
				}
			}
		} catch (FileNotFoundException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		} catch (LineUnavailableException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		} catch (UnsupportedAudioFileException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		} catch (IOException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		} catch (InterruptedException e) {
			e.printStackTrace();
		}
	}
	
	public static void openPreferences (String pageId)
	{
		GameView inFocus = GameView.getGameViewInFocus();
		// FIXME: handle the case where we don't have a GameView
		if (inFocus != null)
		{
			// FIXME: the GameView may not be connected, so... no preferences?
			IWarlockClient activeClient = inFocus.getWarlockClient();

			PreferenceDialog dialog = PreferencesUtil.createPropertyDialogOn(Display.getDefault().getActiveShell(),
					new WarlockClientAdaptable(activeClient), pageId, null, null);

			dialog.getTreeViewer().expandToLevel(2);

			int response = dialog.open();
		}
	}
}