/**
* Update URL and gauge of the progress form.
*
* @param url new URL, null to remove, "" to not change
* @param size 0 if unknown, else size of object to download in K bytes
* @param gaugeLabel label for progress gauge
*/
private void updateProgressForm(String url, int size, String gaugeLabel) {
Gauge oldProgressGauge;
Gauge progressGauge;
StringItem urlItem;
// We need to prevent "flashing" on fast development platforms.
while (System.currentTimeMillis() - lastDisplayChange < GraphicalInstaller.ALERT_TIMEOUT) ;
if (size <= 0) {
progressGauge = new Gauge(gaugeLabel, false, Gauge.INDEFINITE, Gauge.CONTINUOUS_RUNNING);
} else {
progressGauge = new Gauge(gaugeLabel, false, size, 0);
}
oldProgressGauge = (Gauge) progressForm.get(progressGaugeIndex);
progressForm.set(progressGaugeIndex, progressGauge);
// this ends the background thread of gauge.
oldProgressGauge.setValue(Gauge.CONTINUOUS_IDLE);
if (url == null) {
urlItem = new StringItem("", "");
progressForm.set(progressUrlIndex, urlItem);
} else if (url.length() != 0) {
urlItem = new StringItem(Resource.getString(ResourceConstants.AMS_WEBSITE) + ": ", url);
progressForm.set(progressUrlIndex, urlItem);
}
lastDisplayChange = System.currentTimeMillis();
}
public TrafficCams(Controller controller) {
super("Traffic Status", Choice.EXCLUSIVE);
this.controller = controller;
traf = this;
TrafOption = new Command("OK", Command.SCREEN, 1);
bckMenu = new Command("back", Command.BACK, 2);
VehicleOk = new Command("OK", Command.SCREEN, 1);
Vehicleback = new Command("Back", Command.BACK, 2);
this.addCommand(TrafOption);
this.addCommand(bckMenu);
setCommandListener(this);
if (fmViewPng == null) {
fmViewPng = new Form("");
cmBack = new Command("Back", Command.BACK, 1);
RefreshImage = new Command("refresh", Command.OK, 2);
fmViewPng.addCommand(cmBack);
fmViewPng.addCommand(RefreshImage);
fmViewPng.setCommandListener(this);
}
}
/**
* Display the connecting form to the user, let call set actions.
*
* @param action action to put in the form's title
* @param name name to in the form's title
* @param url URL of a JAD
* @param size 0 if unknown, else size of object to download in K bytes
* @param gaugeLabel label for progress gauge
* @return displayed form
*/
private Form displayProgressForm(
String action, String name, String url, int size, String gaugeLabel) {
Gauge progressGauge;
StringItem urlItem;
progressForm = new Form(null);
progressForm.setTitle(action + " " + name);
if (size <= 0) {
progressGauge = new Gauge(gaugeLabel, false, Gauge.INDEFINITE, Gauge.CONTINUOUS_RUNNING);
} else {
progressGauge = new Gauge(gaugeLabel, false, size, 0);
}
progressGaugeIndex = progressForm.append(progressGauge);
if (url == null) {
urlItem = new StringItem("", "");
} else {
urlItem = new StringItem(Resource.getString(ResourceConstants.AMS_WEBSITE) + ": ", url);
}
progressUrlIndex = progressForm.append(urlItem);
display.setCurrent(progressForm);
lastDisplayChange = System.currentTimeMillis();
return progressForm;
}
public void commandAction(Command c, Displayable d) {
if (c == startCmd) {
form.deleteAll();
form.removeCommand(startCmd);
form.addCommand(byeCmd);
Thread t =
new Thread() {
public void run() {
startSession();
}
};
t.start();
// startSession();
return;
} else if (c == exitCmd) {
destroyApp(true);
return;
} else if (c == byeCmd) {
form.removeCommand(byeCmd);
form.addCommand(restartCmd);
sendBYE();
return;
} else if (c == restartCmd) {
stopListener();
form.removeCommand(restartCmd);
form.addCommand(startCmd);
form.deleteAll();
form.append(address);
return;
}
}
public OriginatingINVITE() {
// <i><b>Initialize MIDlet display</b></i>
display = Display.getDisplay(this);
// <i><b>create a Form for progess info printings</b></i>
form = new Form("Session example");
address = new TextField("INVITE:", "sip:[email protected]:5070", 40, TextField.LAYOUT_LEFT);
form.append(address);
byeCmd = new Command("Bye", Command.ITEM, 1);
restartCmd = new Command("Restart", Command.ITEM, 1);
startCmd = new Command("Start", Command.ITEM, 1);
form.addCommand(startCmd);
exitCmd = new Command("Exit", Command.EXIT, 1);
form.addCommand(exitCmd);
form.setCommandListener(this);
}
public void notifyRequest(SipConnectionNotifier sn) {
try {
ssc = scn.acceptAndOpen(); // <i><b>blocking</b></i>
if (ssc.getMethod().equals("BYE")) {
// <i><b>respond 200 OK to BYE</b></i>
ssc.initResponse(200);
ssc.send();
str = new StringItem("Other side hang-up!", "");
form.append(str);
}
form.append("Closing notifier...");
form.removeCommand(byeCmd);
form.addCommand(restartCmd);
scn.close();
} catch (IOException ex) {
// <i><b>handle IOException</b></i>
}
}
/** Handle incoming response here */
public void notifyResponse(SipClientConnection scc) {
int statusCode = 0;
boolean received = false;
try {
scc.receive(0); // <i><b>fetch resent response</b></i>
statusCode = scc.getStatusCode();
str = new StringItem("Response: ", statusCode + " " + scc.getReasonPhrase());
form.append(str);
if (statusCode < 200) {
dialog = scc.getDialog();
form.append("Early-Dialog state: " + dialog.getState());
}
if (statusCode == 200) {
String contentType = scc.getHeader("Content-Type");
String contentLength = scc.getHeader("Content-Length");
int length = Integer.parseInt(contentLength);
if (contentType.equals("application/sdp")) {
//
// <i><b>handle SDP here</b></i>
//
}
dialog = scc.getDialog(); // <i><b>save dialog info</b></i>
form.append("Dialog state: " + dialog.getState());
scc.initAck(); // <i><b>initialize and send ACK</b></i>
scc.send();
str = new StringItem("Session established: ", scc.getHeader("Call-ID"));
form.append(str);
scc.close();
} else if (statusCode >= 300) {
str = new StringItem("Session failed: ", scc.getHeader("Call-ID"));
form.append(str);
form.removeCommand(byeCmd);
form.addCommand(restartCmd);
scc.close();
}
} catch (IOException ioe) {
// <i><b>handle e.g. transaction timeout here</b></i>
str = new StringItem("No answer: ", ioe.getMessage());
form.append(str);
form.removeCommand(byeCmd);
form.addCommand(restartCmd);
}
}
private void startSession() {
SipClientConnection scc = null;
try {
// <i><b>start a listener for incoming requests</b></i>
startListener();
// <i><b>open SIP connection with remote user</b></i>
scc = (SipClientConnection) Connector.open(address.getString());
scc.setListener(this);
// <i><b>initialize INVITE request</b></i>
scc.initRequest("INVITE", scn);
scc.setHeader("Content-Length", "" + sdp.length());
scc.setHeader("Content-Type", "application/sdp");
OutputStream os = scc.openContentOutputStream();
os.write(sdp.getBytes());
os.close(); // <i><b>close and send</b></i>
str = new StringItem("Inviting... ", scc.getHeader("To"));
form.append(str);
} catch (Exception ex) {
ex.printStackTrace();
// <i><b>handle IOException</b></i>
}
}
/** end session with BYE */
private void sendBYE() {
if (dialog != null) {
try {
SipClientConnection sc = dialog.getNewClientConnection("BYE");
sc.send();
str = new StringItem("user hang-up: ", "BYE sent...");
form.append(str);
boolean gotit = sc.receive(10000);
if (gotit) {
if (sc.getStatusCode() == 200) {
form.append("Session closed successfully...");
form.append("Dialog state: " + dialog.getState());
} else form.append("Error: " + sc.getReasonPhrase());
}
sc.close();
} catch (IOException iox) {
form.append("Exception: " + iox.getMessage());
}
} else {
form.append("No dialog information!");
}
}
public void commandAction(Command command, Displayable displayable) {
if (command == camList) {
controller.setCurrentScreen(this);
controller.setCurrentScreen(this);
}
if (command == refreshList) {
controller.showProgressBar();
refreshCamList();
}
if (command == cmBack) {
controller.getDisp().setCurrent(LiveCameras);
}
if (command == RefreshImage) {
refreshImage();
}
if (command == viewImage) {
refreshImage();
}
if (command == TrafOption) {
if (this.getString(this.getSelectedIndex()).equals("Cameras")) {
LiveCameras();
} else if (this.getString(this.getSelectedIndex()).equals("Traffic Fines")) {
if (VehicleNoForm == null) {
VehicleNoForm = new Form("Traffic Fines");
vehNo = new TextField("Vehicle Number", "", 100, TextField.ANY);
VehicleNoForm.append(vehNo);
VehicleNoForm.addCommand(Vehicleback);
VehicleNoForm.addCommand(VehicleOk);
VehicleNoForm.setCommandListener(this);
}
controller.setCurrentScreen(VehicleNoForm);
} else {
new Thread() {
public void run() {
getTrafficSpots();
}
}.start();
}
}
if (command == bckMenu) {
controller.MainMenu();
}
if (command == Vehicleback) {
controller.setCurrentScreen(this);
}
if (command == VehicleOk) {
if (vehNo.getString().equals("")) {
controller.showAlert("Enter the vehicle number", 0, AlertType.ERROR);
} else {
controller.showProgressBar();
new Thread() {
public void run() {
Downloader dwn = new Downloader(controller);
String message =
dwn.requestForData(
"http://125.17.140.50/notices/vehiclefinedetails.aspx?veh_no="
+ vehNo.getString());
vehNo.setString("");
controller.showAlert(message, 0, AlertType.INFO);
}
}.start();
new Thread() {
public void run() {
controller.setCurrentScreen(VehicleNoForm);
}
}.start();
}
}
}