?? servicelistscreen.java
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// Copyright 2006 Nokia Corporation.
//
// THIS SOURCE CODE IS PROVIDED 'AS IS', WITH NO WARRANTIES WHATSOEVER,
// EXPRESS OR IMPLIED, INCLUDING ANY WARRANTY OF MERCHANTABILITY, FITNESS
// FOR ANY PARTICULAR PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE
// OR TRADE PRACTICE, RELATING TO THE SOURCE CODE OR ANY WARRANTY OTHERWISE
// ARISING OUT OF ANY PROPOSAL, SPECIFICATION, OR SAMPLE AND WITH NO
// OBLIGATION OF NOKIA TO PROVIDE THE LICENSEE WITH ANY MAINTENANCE OR
// SUPPORT. FURTHERMORE, NOKIA MAKES NO WARRANTY THAT EXERCISE OF THE
// RIGHTS GRANTED HEREUNDER DOES NOT INFRINGE OR MAY NOT CAUSE INFRINGEMENT
// OF ANY PATENT OR OTHER INTELLECTUAL PROPERTY RIGHTS OWNED OR CONTROLLED
// BY THIRD PARTIES
//
// Furthermore, information provided in this source code is preliminary,
// and may be changed substantially prior to final release. Nokia Corporation
// retains the right to make changes to this source code at
// any time, without notice. This source code is provided for informational
// purposes only.
//
// Nokia and Nokia Connecting People are registered trademarks of Nokia
// Corporation.
// Java and all Java-based marks are trademarks or registered trademarks of
// Sun Microsystems, Inc.
// Other product and company names mentioned herein may be trademarks or
// trade names of their respective owners.
//
// A non-exclusive, non-transferable, worldwide, limited license is hereby
// granted to the Licensee to download, print, reproduce and modify the
// source code. The licensee has the right to market, sell, distribute and
// make available the source code in original or modified form only when
// incorporated into the programs developed by the Licensee. No other
// license, express or implied, by estoppel or otherwise, to any other
// intellectual property rights is granted herein.
package bcexchanger.ui;
import java.util.Enumeration;
import java.util.Vector;
import javax.microedition.lcdui.Choice;
import javax.microedition.lcdui.Command;
import javax.microedition.lcdui.Displayable;
import javax.microedition.lcdui.List;
import bcexchanger.*;
/**
*
* This class implements the service list screen. This screen is used
* to when several services are available in vicinity and allows user
* to choose the desired one. Using this screen user can select the
* service or cancel the processs
*
* The class is extending an example.BCExchanger.ui.Screen class
*
* @version 1.0 29.09.2005
* @see example.BCExchanger.ui.Screen Design patterns: State
*
*/
public class ServiceListScreen extends Screen {
private List list;
private Command okCommand;
private Command cancelCommand;
/**
* Constructor
*
* @param _midlet -
* the parent class which keeps the current UI state
* @param friendlyNames -
* vector of the friednly names of the devices which
* contain the services
*/
public ServiceListScreen(BCExchangerMIDlet _midlet,
Vector friendlyNames) {
super(_midlet);
list = new List("Choose service", Choice.EXCLUSIVE);
if (friendlyNames.isEmpty()) {
// list should not be empty
throw new RuntimeException("Internal error #23");
}
Enumeration e = friendlyNames.elements();
while (e.hasMoreElements()) {
list.append((String) e.nextElement(), null);
}
okCommand = new Command("Ok", Command.OK, 1);
cancelCommand = new Command("Cancel", Command.CANCEL, 1);
list.addCommand(okCommand);
list.addCommand(cancelCommand);
list.setCommandListener(this);
displayable = list;
}
public void commandAction(Command command, Displayable _displayable) {
if (_displayable != list) {
// wrong displayable
throw new RuntimeException("Internal error #24");
}
if (command == okCommand) {
midlet.serviceSelected(list.getSelectedIndex());
midlet.unblock();
} else if (command == cancelCommand) {
midlet.getExchanger().cancelSending();
midlet.unblock();
} else {
// unknown command
throw new RuntimeException("Internal error #25");
}
}
}
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