/*
* Copyright 1999-2002 Sun Microsystems, Inc. All Rights Reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Sun designates this
* particular file as subject to the "Classpath" exception as provided
* by Sun in the LICENSE file that accompanied this code.
*
* This code 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
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
* CA 95054 USA or visit www.sun.com if you need additional information or
* have any questions.
*/
package javax.sound.sampled;
/**
* {@link Line Lines} often have a set of controls, such as gain and pan, that affect
* the audio signal passing through the line. Java Sound's <code>Line</code> objects
* let you obtain a particular control object by passing its class as the
* argument to a {@link Line#getControl(Control.Type) getControl} method.
* <p>
* Because the various types of controls have different purposes and features,
* all of their functionality is accessed from the subclasses that define
* each kind of control.
*
* @author Kara Kytle
* @version 1.32, 07/05/05
*
* @see Line#getControls
* @see Line#isControlSupported
* @since 1.3
*/
public abstract class Control {
// INSTANCE VARIABLES
/**
* The control type.
*/
private final Type type;
// CONSTRUCTORS
/**
* Constructs a Control with the specified type.
* @param type the kind of control desired
*/
protected Control(Type type) {
this.type = type;
}
// METHODS
/**
* Obtains the control's type.
* @return the control's type.
*/
public Type getType() {
return type;
}
// ABSTRACT METHODS
/**
* Obtains a String describing the control type and its current state.
* @return a String representation of the Control.
*/
public String toString() {
return new String(getType() + " Control");
}
/**
* An instance of the <code>Type</code> class represents the type of
* the control. Static instances are provided for the
* common types.
*/
public static class Type {
// CONTROL TYPE DEFINES
// INSTANCE VARIABLES
/**
* Type name.
*/
private String name;
// CONSTRUCTOR
/**
* Constructs a new control type with the name specified.
* The name should be a descriptive string appropriate for
* labelling the control in an application, such as "Gain" or "Balance."
* @param name the name of the new control type.
*/
protected Type(String name) {
this.name = name;
}
// METHODS
/**
* Finalizes the equals method
*/
public final boolean equals(Object obj) {
return super.equals(obj);
}
/**
* Finalizes the hashCode method
*/
public final int hashCode() {
return super.hashCode();
}
/**
* Provides the <code>String</code> representation of the control type. This <code>String</code> is
* the same name that was passed to the constructor.
*
* @return the control type name
*/
public final String toString() {
return name;
}
} // class Type
} // class Control
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