/*
*
*
* 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.main;
/**
* IndicatorManager is a singleton class that controls the home icon
* status in status bar.
*/
public class IndicatorManager implements MIDletProxyListListener {
/** singleton variable */
private static IndicatorManager singleton;
/** boolean flag that indicated home icon status */
private static boolean homeIconState;
/** Internal midletProxyList that is used to add listener */
private static MIDletProxyList midletProxyList;
/**
* Native method to toggle the home icon
*
* @param isHomeOn : boolean flag to indicate status of home icon
*
*/
private static native void toggleHomeIcon0(boolean isHomeOn);
/**
* IndicatorManager is a singleton.
*/
private IndicatorManager() {
}
/**
* A static method that initialize singleton IndicatorBar class
*
* @param theMidletProxyList a reference to the MIDlet proxy list
*/
public static void init(MIDletProxyList theMidletProxyList) {
if (singleton == null) {
midletProxyList = theMidletProxyList;
singleton = new IndicatorManager();
midletProxyList.addListener(singleton);
}
}
/**
* This method is called whenever home icon needs to be
* turned on/off
*
* @param newHomeIconState boolean flag to indicate status of home icon
*/
private static void setHomeIconState(boolean newHomeIconState) {
if (homeIconState != newHomeIconState) {
homeIconState = newHomeIconState;
toggleHomeIcon0(homeIconState);
}
}
/**
* This function is public so that unit test can refer it
*
* @return state of the home icon
*/
public static boolean getHomeIconState() {
return homeIconState;
}
/**
* Called when a MIDlet is added to the list.
*
* @param midlet The proxy of the MIDlet being added
*/
public void midletAdded(MIDletProxy midlet) {
// IndicatorManager does not care if midlet is added
}
/**
* Called when a MIDlet is removed from the list.
*
* @param midlet The proxy of the MIDlet being removed
*/
public void midletRemoved(MIDletProxy midlet) {
setHomeIconState(midletProxyList.isAlertWaitingInBackground());
}
/**
* Called when the state of a MIDlet in the list is updated.
*
* @param midlet The proxy of the MIDlet being updated
* @param fieldId code for which field of the proxy was updated
*/
public void midletUpdated(MIDletProxy midlet, int fieldId) {
setHomeIconState(midletProxyList.isAlertWaitingInBackground());
}
/**
* Called when error occurred while starting a MIDlet object.
*
* @param externalAppId ID assigned by the external application manager
* @param suiteId Suite ID of the MIDlet
* @param className Class name of the MIDlet
* @param errorCode start error code
* @param errorDetails start error details
*/
public void midletStartError(int externalAppId, int suiteId,
String className, int errorCode,
String errorDetails) {}
}
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