Source for javax.sound.sampled.LineEvent

   1: /* 
   2:    Copyright (C) 2005 Free Software Foundation, Inc.
   3: 
   4: This file is part of GNU Classpath.
   5: 
   6: GNU Classpath is free software; you can redistribute it and/or modify
   7: it under the terms of the GNU General Public License as published by
   8: the Free Software Foundation; either version 2, or (at your option)
   9: any later version.
  10: 
  11: GNU Classpath is distributed in the hope that it will be useful, but
  12: WITHOUT ANY WARRANTY; without even the implied warranty of
  13: MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14: General Public License for more details.
  15: 
  16: You should have received a copy of the GNU General Public License
  17: along with GNU Classpath; see the file COPYING.  If not, write to the
  18: Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
  19: 02110-1301 USA.
  20: 
  21: Linking this library statically or dynamically with other modules is
  22: making a combined work based on this library.  Thus, the terms and
  23: conditions of the GNU General Public License cover the whole
  24: combination.
  25: 
  26: As a special exception, the copyright holders of this library give you
  27: permission to link this library with independent modules to produce an
  28: executable, regardless of the license terms of these independent
  29: modules, and to copy and distribute the resulting executable under
  30: terms of your choice, provided that you also meet, for each linked
  31: independent module, the terms and conditions of the license of that
  32: module.  An independent module is a module which is not derived from
  33: or based on this library.  If you modify this library, you may extend
  34: this exception to your version of the library, but you are not
  35: obligated to do so.  If you do not wish to do so, delete this
  36: exception statement from your version. */
  37: 
  38: 
  39: package javax.sound.sampled;
  40: 
  41: import java.io.IOException;
  42: import java.io.NotSerializableException;
  43: import java.io.ObjectInputStream;
  44: import java.io.ObjectOutputStream;
  45: import java.util.EventObject;
  46: 
  47: /**
  48:  * This class holds information about a state change of a Line.
  49:  * @specnote This class is not really serializable, and attempts to
  50:  * serialize it will throw {@link NotSerializableException}.
  51:  * @since 1.3
  52:  */
  53: public class LineEvent extends EventObject
  54: {
  55:   // We define this even though this class can't be serialized, in
  56:   // order to placate the compiler.
  57:   private static final long serialVersionUID = -1274246333383880410L;
  58: 
  59:   /**
  60:    * This class represents the kinds of state changes that can occur
  61:    * to a Line.  The standard states are availabe as static instances.
  62:    * @since 1.3
  63:    */
  64:   public static class Type
  65:   {
  66:     /** An event of this type is posted when a Line closes.  */
  67:     public static final Type CLOSE = new Type("close");
  68: 
  69:     /** An event of this type is posted when a Line opens.  */
  70:     public static final Type OPEN = new Type("open");
  71: 
  72:     /** An event of this type is posted when a Line starts.  */
  73:     public static final Type START = new Type("start");
  74: 
  75:     /** An event of this type is posted when a Line stops.  */
  76:     public static final Type STOP = new Type("stop");
  77: 
  78:     private String name;
  79: 
  80:     /**
  81:      * Create a new type with the indicated name.
  82:      * @param name the name
  83:      */
  84:     protected Type(String name)
  85:     {
  86:       this.name = name;
  87:     }
  88: 
  89:     public final boolean equals(Object o)
  90:     {
  91:       return super.equals(o);
  92:     }
  93: 
  94:     public final int hashCode()
  95:     {
  96:       return super.hashCode();
  97:     }
  98: 
  99:     /**
 100:      * Return the name of this Type.
 101:      */
 102:     public String toString()
 103:     {
 104:       return name;
 105:     }
 106:   }
 107: 
 108:   private Type type;
 109:   private long framePosition;
 110:   private Line line;
 111: 
 112:   /**
 113:    * Create a new LineEvent with the indicated line, type, and frame position.
 114:    * @param line the line
 115:    * @param type the type of the event
 116:    * @param pos the frame position
 117:    */
 118:   public LineEvent(Line line, Type type, long pos)
 119:   {
 120:     super(line);
 121:     this.line = line;
 122:     this.type = type;
 123:     this.framePosition = pos;
 124:   }
 125: 
 126:   /**
 127:    * Return the frame position associated with this event.
 128:    */
 129:   public final long getFramePosition()
 130:   {
 131:     return framePosition;
 132:   }
 133: 
 134:   /**
 135:    * Return the Line associated with this event.
 136:    */
 137:   public final Line getLine()
 138:   {
 139:     return line;
 140:   }
 141: 
 142:   /**
 143:    * Return the Type associated with this event.
 144:    */
 145:   public final Type getType()
 146:   {
 147:     return type;
 148:   }
 149: 
 150:   /**
 151:    * Return a description of this event.
 152:    */
 153:   public String toString()
 154:   {
 155:     return ("type=" + type + "; framePosition=" + framePosition
 156:         + "line=" + line);
 157:   }
 158:   
 159:   private void readObject(ObjectInputStream ois)
 160:     throws IOException
 161:   {
 162:     throw new NotSerializableException("LineEvent is not serializable");
 163:   }
 164:   
 165:   private void writeObject(ObjectOutputStream oos)
 166:     throws IOException
 167:   {
 168:     throw new NotSerializableException("LineEvent is not serializable");
 169:   }
 170: }