/*
*
*
* 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.satsa.pki;
import com.sun.midp.midlet.MIDletEventConsumer;
import com.sun.midp.lcdui.DisplayEventHandler;
import com.sun.midp.lcdui.DisplayEventHandlerFactory;
import com.sun.midp.i18n.Resource;
import com.sun.midp.i18n.ResourceConstants;
import com.sun.midp.security.SecurityToken;
import com.sun.midp.midlet.MIDletPeer;
import javax.microedition.lcdui.*;
/**
* This class represents simple dialog form.
*/
class Dialog implements CommandListener {
/** Answer that indicates that the dialog was cancelled. */
public static final int CANCELLED = -1;
/** Answer that indicates successful completion. */
public static final int CONFIRMED = 1;
/** Caches the display manager reference. */
private DisplayEventHandler displayEventHandler;
/** Command object for "OK" command. */
private Command okCmd = new Command(Resource
.getString(ResourceConstants.OK),
Command.OK, 1);
/** Command object for "Cancel" command. */
private Command cancelCmd =
new Command(Resource
.getString(ResourceConstants.CANCEL),
Command.CANCEL, 1);
/** Holds the preempt token so the form can end. */
private Object preemptToken;
/** Holds the answer to the security question. */
private int answer = CANCELLED;
/** Form object for this dialog. */
private Form form;
/**
* Construct message dialog for informational message or
* confirmation request.
* @param title dialog title
* @param withCancel show Cancel button
*/
Dialog(String title, boolean withCancel) {
form = new Form(title);
form.addCommand(okCmd);
if (withCancel) {
form.addCommand(cancelCmd);
}
form.setCommandListener(this);
}
/**
* Adds an Item into the Form.
* @param item the Item to be added
*/
void append(Item item) {
form.append(item);
}
/**
* Waits for the user's answer.
* @param token security token.
* @return user's answer
* @throws InterruptedException if interrupted
*/
int waitForAnswer(SecurityToken token)
throws InterruptedException {
if (displayEventHandler == null) {
displayEventHandler = DisplayEventHandlerFactory
.getDisplayEventHandler(token);
}
preemptToken = displayEventHandler.preemptDisplay(form, true);
synchronized (this) {
if (preemptToken == null) {
return CANCELLED;
}
try {
wait();
} catch (Throwable t) {
return CANCELLED;
}
return answer;
}
}
/**
* Respond to a command issued on form.
* Sets the user's answer and notifies waitForAnswer and
* ends the form.
* @param c command activiated by the user
* @param s the Displayable the command was on.
*/
public void commandAction(Command c, Displayable s) {
synchronized (this) {
answer = c == okCmd ? CONFIRMED : CANCELLED;
displayEventHandler.donePreempting(preemptToken);
notify();
}
}
}
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