Updates pull request from Roman Tsypuk to convert the build system from

ant to gradle.  Removes linux and windows application launch scripts and
produces an executable jar with all resources included.

src/main/java/io/github/dsheirer/map/PlottableEntity.java

@@ -0,0 +1,170 @@
+/*******************************************************************************
+ *     SDR Trunk 
+ *     Copyright (C) 2014 Dennis Sheirer
+ * 
+ *     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 3 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, see <http://www.gnu.org/licenses/>
+ ******************************************************************************/
+package io.github.dsheirer.map;
+
+import org.jdesktop.swingx.mapviewer.GeoPosition;
+import io.github.dsheirer.alias.Alias;
+
+import java.awt.*;
+import java.util.Collections;
+import java.util.Set;
+import java.util.TreeSet;
+
+public class PlottableEntity implements Comparable<PlottableEntity>
+{
+	private TreeSet<Plottable> mPlottables = new TreeSet<Plottable>();
+
+	private Alias mAlias;
+	private Color mColor;
+	private String mID;
+	
+	private int mMaxHistory = 2;
+
+	/**
+	 * Constructs the entity using the group and alias from the plottable and
+	 * adds the plottable as the first plottable entry in the history
+	 */
+	public PlottableEntity( Plottable plottable, Color color )
+	{
+		addPlottable( plottable );
+		mColor = color;
+	}
+	
+	public int getMaxHistory()
+	{
+		return mMaxHistory;
+	}
+	
+	public void setMaxHistory( int maxHistory )
+	{
+		if( maxHistory >= 1 )
+		{
+			mMaxHistory = maxHistory;
+		}
+	}
+	
+	public Plottable getCurrentPlottable()
+	{
+		return mPlottables.last();
+	}
+	
+	public GeoPosition getCurrentGeoPosition()
+	{
+		return getCurrentPlottable().getGeoPosition();
+	}
+
+	/**
+	 * Adds the plottable to this entity
+	 */
+	public void addPlottable( Plottable plottable )
+	{
+		/**
+		 * Grab the entity settings from the latest plot
+		 */
+		mAlias = plottable.getAlias();
+		mID = plottable.getID();
+		
+		/**
+		 * Add the plottable to the list
+		 */
+		mPlottables.add( plottable );
+		
+		while( mPlottables.size() > mMaxHistory )
+		{
+			mPlottables.remove( mPlottables.first() );
+		}
+	}
+	
+	public String getLabel()
+	{
+		if( mAlias == null )
+		{
+			return mID;
+		}
+		else
+		{
+			return mAlias.getName();
+		}
+	}
+	
+	public String getMapIconName()
+	{
+		if( mAlias != null )
+		{
+			return mAlias.getIconName();
+		}
+		else
+		{
+			return null;
+		}
+	}
+
+	/**
+	 * Color for rendering this entity (label, route, etc.)
+	 */
+	public Color getColor()
+	{
+		return mColor;
+	}
+	
+	public void setColor( Color color )
+	{
+		mColor = color;
+	}
+	
+	/**
+	 * Default id to use in the label
+	 */
+	public String getID()
+	{
+		return mID;
+	}
+	
+	/**
+	 * Gets the alias for this entity
+	 */
+	public Alias getAlias()
+	{
+		return mAlias;
+	}
+
+	/**
+	 * Returns an unmodifiable sorted (time order) list of plottables
+	 */
+	public Set<Plottable> getPlottables()
+	{
+		return Collections.unmodifiableSet( mPlottables );
+	}
+
+	/**
+	 * Clears all plottables from this entity
+	 */
+	public void clear()
+	{
+		mPlottables.clear();
+	}
+
+	/**
+	 * Compares by alias name
+	 */
+	@Override
+    public int compareTo( PlottableEntity o )
+    {
+	    return this.getAlias().getName().compareTo( o.getAlias().getName() );
+    }
+}