/* * Copyright (c) 1999, 2003, Oracle and/or its affiliates. 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. Oracle designates this * particular file as subject to the "Classpath" exception as provided * by Oracle 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. */package javax.sound.sampled;/** * A <code>EnumControl</code> provides control over a set of * discrete possible values, each represented by an object. In a * graphical user interface, such a control might be represented * by a set of buttons, each of which chooses one value or setting. For * example, a reverb control might provide several preset reverberation * settings, instead of providing continuously adjustable parameters * of the sort that would be represented by <code>{@link FloatControl}</code> * objects. * <p> * Controls that provide a choice between only two settings can often be implemented * instead as a <code>{@link BooleanControl}</code>, and controls that provide * a set of values along some quantifiable dimension might be implemented * instead as a <code>FloatControl</code> with a coarse resolution. * However, a key feature of <code>EnumControl</code> is that the returned values * are arbitrary objects, rather than numerical or boolean values. This means that each * returned object can provide further information. As an example, the settings * of a <code>{@link EnumControl.Type#REVERB REVERB}</code> control are instances of * <code>{@link ReverbType}</code> that can be queried for the parameter values * used for each setting. * * @author Kara Kytle * @since 1.3 */public abstract class EnumControl extends Control { // TYPE DEFINES // INSTANCE VARIABLES /** * The set of possible values. */ private Object[] values; /** * The current value. */ private Object value; // CONSTRUCTORS /** * Constructs a new enumerated control object with the given parameters. * * @param type the type of control represented this enumerated control object * @param values the set of possible values for the control * @param value the initial control value */ protected EnumControl(Type type, Object[] values, Object value) { super(type); this.values = values; this.value = value; } // METHODS /** * Sets the current value for the control. The default implementation * simply sets the value as indicated. If the value indicated is not * supported, an IllegalArgumentException is thrown. * Some controls require that their line be open before they can be affected * by setting a value. * @param value the desired new value * @throws IllegalArgumentException if the value indicated does not fall * within the allowable range */ public void setValue(Object value) { if (!isValueSupported(value)) { throw new IllegalArgumentException("Requested value " + value + " is not supported."); } this.value = value; } /** * Obtains this control's current value. * @return the current value */ public Object getValue() { return value; } /** * Returns the set of possible values for this control. * @return the set of possible values */ public Object[] getValues() { Object[] localArray = new Object[values.length]; for (int i = 0; i < values.length; i++) { localArray[i] = values[i]; } return localArray; } /** * Indicates whether the value specified is supported. * @param value the value for which support is queried * @return <code>true</code> if the value is supported, * otherwise <code>false</code> */ private boolean isValueSupported(Object value) { for (int i = 0; i < values.length; i++) { //$$fb 2001-07-20: Fix for bug 4400392: setValue() in ReverbControl always throws Exception //if (values.equals(values[i])) { if (value.equals(values[i])) { return true; } } return false; } // ABSTRACT METHOD IMPLEMENTATIONS: CONTROL /** * Provides a string representation of the control. * @return a string description */ public String toString() { return new String(getType() + " with current value: " + getValue()); } // INNER CLASSES /** * An instance of the <code>EnumControl.Type</code> inner class identifies one kind of * enumerated control. Static instances are provided for the * common types. * * @see EnumControl * * @author Kara Kytle * @since 1.3 */ public static class Type extends Control.Type { // TYPE DEFINES /** * Represents a control over a set of possible reverberation settings. * Each reverberation setting is described by an instance of the * {@link ReverbType} class. (To access these settings, * invoke <code>{@link EnumControl#getValues}</code> on an * enumerated control of type <code>REVERB</code>.) */ public static final Type REVERB = new Type("Reverb"); // CONSTRUCTOR /** * Constructs a new enumerated control type. * @param name the name of the new enumerated control type */ protected Type(String name) { super(name); } } // class Type} // class EnumControl
/*
* Copyright (c) 1999, 2003, Oracle and/or its affiliates. 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. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
package javax.sound.sampled;
/**
* A <code>EnumControl</code> provides control over a set of
* discrete possible values, each represented by an object. In a
* graphical user interface, such a control might be represented
* by a set of buttons, each of which chooses one value or setting. For
* example, a reverb control might provide several preset reverberation
* settings, instead of providing continuously adjustable parameters
* of the sort that would be represented by <code>{@link FloatControl}</code>
* objects.
* <p>
* Controls that provide a choice between only two settings can often be implemented
* instead as a <code>{@link BooleanControl}</code>, and controls that provide
* a set of values along some quantifiable dimension might be implemented
* instead as a <code>FloatControl</code> with a coarse resolution.
* However, a key feature of <code>EnumControl</code> is that the returned values
* are arbitrary objects, rather than numerical or boolean values. This means that each
* returned object can provide further information. As an example, the settings
* of a <code>{@link EnumControl.Type#REVERB REVERB}</code> control are instances of
* <code>{@link ReverbType}</code> that can be queried for the parameter values
* used for each setting.
*
* @author Kara Kytle
* @since 1.3
*/
public abstract class EnumControl extends Control {
// TYPE DEFINES
// INSTANCE VARIABLES
/**
* The set of possible values.
*/
private Object[] values;
/**
* The current value.
*/
private Object value;
// CONSTRUCTORS
/**
* Constructs a new enumerated control object with the given parameters.
*
* @param type the type of control represented this enumerated control object
* @param values the set of possible values for the control
* @param value the initial control value
*/
protected EnumControl(Type type, Object[] values, Object value) {
super(type);
this.values = values;
this.value = value;
}
// METHODS
/**
* Sets the current value for the control. The default implementation
* simply sets the value as indicated. If the value indicated is not
* supported, an IllegalArgumentException is thrown.
* Some controls require that their line be open before they can be affected
* by setting a value.
* @param value the desired new value
* @throws IllegalArgumentException if the value indicated does not fall
* within the allowable range
*/
public void setValue(Object value) {
if (!isValueSupported(value)) {
throw new IllegalArgumentException("Requested value " + value + " is not supported.");
}
this.value = value;
}
/**
* Obtains this control's current value.
* @return the current value
*/
public Object getValue() {
return value;
}
/**
* Returns the set of possible values for this control.
* @return the set of possible values
*/
public Object[] getValues() {
Object[] localArray = new Object[values.length];
for (int i = 0; i < values.length; i++) {
localArray[i] = values[i];
}
return localArray;
}
/**
* Indicates whether the value specified is supported.
* @param value the value for which support is queried
* @return <code>true</code> if the value is supported,
* otherwise <code>false</code>
*/
private boolean isValueSupported(Object value) {
for (int i = 0; i < values.length; i++) {
//$$fb 2001-07-20: Fix for bug 4400392: setValue() in ReverbControl always throws Exception
//if (values.equals(values[i])) {
if (value.equals(values[i])) {
return true;
}
}
return false;
}
// ABSTRACT METHOD IMPLEMENTATIONS: CONTROL
/**
* Provides a string representation of the control.
* @return a string description
*/
public String toString() {
return new String(getType() + " with current value: " + getValue());
}
// INNER CLASSES
/**
* An instance of the <code>EnumControl.Type</code> inner class identifies one kind of
* enumerated control. Static instances are provided for the
* common types.
*
* @see EnumControl
*
* @author Kara Kytle
* @since 1.3
*/
public static class Type extends Control.Type {
// TYPE DEFINES
/**
* Represents a control over a set of possible reverberation settings.
* Each reverberation setting is described by an instance of the
* {@link ReverbType} class. (To access these settings,
* invoke <code>{@link EnumControl#getValues}</code> on an
* enumerated control of type <code>REVERB</code>.)
*/
public static final Type REVERB = new Type("Reverb");
// CONSTRUCTOR
/**
* Constructs a new enumerated control type.
* @param name the name of the new enumerated control type
*/
protected Type(String name) {
super(name);
}
} // class Type
} // class EnumControl