/*
*
*
* Copyright 1990-2007 Sun Microsystems, Inc. All Rights Reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER
*
* This program 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.
*
* 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 version 2 for more details (a copy is
* included at /legal/license.txt).
*
* 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 or visit www.sun.com if you need additional
* information or have any questions.
*/
package com.sun.midp.automation;
import com.sun.midp.main.*;
import com.sun.midp.events.*;
/**
* Initializes Automation API
*/
public final class AutomationInitializer {
/** Event queue */
private static EventQueue eventQueue = null;
/** MIDletControllerEventProducer instance */
private static MIDletControllerEventProducer
midletControllerEventProducer = null;
/** whether Automation API has been initialized or not */
private static boolean isInitialized = false;
/**
* Private constructor to prevent creating class instances
*/
private AutomationInitializer() {
}
/**
* Initializes Automation API.
*
* @param theEventQueue Automation API's isolate event queue
* @param theMidletControllerEventProducer MIDletControllerEventProducer
*/
public static void init(
EventQueue theEventQueue,
MIDletControllerEventProducer theMidletControllerEventProducer) {
if (!isInitialized) {
eventQueue = theEventQueue;
midletControllerEventProducer = theMidletControllerEventProducer;
isInitialized = true;
}
}
/**
* Gets event queue.
*
* @return Automation API's isolate event queue
* @throws IllegalStateException if Automation API isn't initialized
* or not permitted to use
*/
static EventQueue getEventQueue()
throws IllegalStateException {
guaranteeAutomationInitialized();
return eventQueue;
}
/**
* Gets MIDletControllerEventProducer.
*
* @return MIDletControllerEventProducer instance
* @throws IllegalStateException if Automation API isn't initialized
* or not permitted to use
*/
static MIDletControllerEventProducer getMIDletControllerEventProducer()
throws IllegalStateException {
guaranteeAutomationInitialized();
return midletControllerEventProducer;
}
/**
* Guarantees that Automation API is initialized and
* permitted to use.
*
* @throws IllegalStateException if Automation API isn't initialized
* or not permitted to use
*/
static void guaranteeAutomationInitialized()
throws IllegalStateException {
if (!isInitialized) {
throw new IllegalStateException("Automation API not initialized");
}
}
}
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