/**
* 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();
}
/**
* 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;
}
/**
* Alert the user that an action was successful.
*
* @param successMessage message to display to user
*/
private void displaySuccessMessage(String successMessage) {
Image icon;
Alert successAlert;
icon = GraphicalInstaller.getImageFromInternalStorage("_dukeok8");
successAlert = new Alert(null, successMessage, icon, null);
successAlert.setTimeout(GraphicalInstaller.ALERT_TIMEOUT);
// We need to prevent "flashing" on fast development platforms.
while (System.currentTimeMillis() - lastDisplayChange < GraphicalInstaller.ALERT_TIMEOUT) ;
lastDisplayChange = System.currentTimeMillis();
display.setCurrent(successAlert);
}
public void startApp() {
if (svgCanvas == null) {
// If there is a splash screen defined, show it immediately.
boolean hasSplash = ((splashImageName != null) && !"".equals(splashImageName));
if (hasSplash) {
InputStream splashStream = getClass().getResourceAsStream(splashImageName);
try {
Image splashImage = Image.createImage(splashStream);
splashCanvas = new SplashCanvas(splashImage);
} catch (IOException ioe) {
ioe.printStackTrace();
hasSplash = false;
}
if (splashCanvas != null) {
Display.getDisplay(this).setCurrent(splashCanvas);
}
}
long start = System.currentTimeMillis();
// Get input stream to the SVG image stored in the MIDlet's jar.
InputStream svgDemoStream = getClass().getResourceAsStream(svgImageName);
// Build an SVGImage instance from the stream
svgImage = null;
if (svgDemoStream != null) {
try {
svgImage = (SVGImage) SVGImage.createImage(svgDemoStream, null);
} catch (IOException io) {
io.printStackTrace();
}
}
if (svgImage == null) {
throw new Error(ERROR_COULD_NOT_LOAD_SVG + svgImageName);
}
// Build an SVGAnimator from the SVGImage. The SVGAnimator will handle
// all the animation details and run the SVG animation in a
// Canvas instance.
svgAnimator = SVGAnimator.createAnimator(svgImage);
// Set to 10 fps (frames per second)
svgAnimator.setTimeIncrement(0.01f);
// Get the Canvas managed by the SVGAnimator and set the
// svgImage's size to the canvas display area.
svgCanvas = (Canvas) svgAnimator.getTargetComponent();
svgImage.setViewportWidth(svgCanvas.getWidth());
svgImage.setViewportHeight(svgCanvas.getHeight());
// Hook the exit command so that we can exit the animation demo.
svgCanvas.addCommand(exitCommand);
svgCanvas.setCommandListener(this);
// The SVG root element is used to reset the time on a stop operation.
doc = svgImage.getDocument();
svg = (SVGSVGElement) doc.getDocumentElement();
// Hook-in key listeners to play, pause and stop the animation.
svgAnimator.setSVGEventListener(this);
long end = System.currentTimeMillis();
if (hasSplash) {
long waitMore = SPLASH_MIN_LENGTH - (end - start);
if (waitMore > 0) {
try {
Thread.currentThread().sleep(waitMore);
} catch (InterruptedException ie) {
// Do nothing.
}
}
}
if (autoStart) {
svgAnimator.play();
state = STATE_PLAYING;
System.err.println("PLAYING...");
}
}
Display.getDisplay(this).setCurrent(svgCanvas);
resumeAnimation();
}
/**
* Get the list of suites for the user to install. The suites that are listed are the links on a
* web page that end with .jad.
*/
public void run() {
StreamConnection conn = null;
InputStreamReader in = null;
String errorMessage;
long startTime;
startTime = System.currentTimeMillis();
try {
parent.displayProgressForm(
Resource.getString(ResourceConstants.AMS_DISC_APP_GET_INSTALL_LIST),
"",
url,
0,
Resource.getString(ResourceConstants.AMS_GRA_INTLR_CONN_GAUGE_LABEL));
conn = (StreamConnection) Connector.open(url, Connector.READ);
in = new InputStreamReader(conn.openInputStream());
try {
parent.updateProgressForm(
"", 0, Resource.getString(ResourceConstants.AMS_DISC_APP_GAUGE_LABEL_DOWNLOAD));
parent.installList = SuiteDownloadInfo.getDownloadInfoFromPage(in);
if (parent.installList.size() > 0) {
parent.installListBox =
new List(
Resource.getString(ResourceConstants.AMS_DISC_APP_SELECT_INSTALL),
Choice.IMPLICIT);
// Add each suite
for (int i = 0; i < parent.installList.size(); i++) {
SuiteDownloadInfo suite = (SuiteDownloadInfo) installList.elementAt(i);
parent.installListBox.append(suite.label, (Image) null);
}
parent.installListBox.addCommand(parent.backCmd);
parent.installListBox.addCommand(parent.installCmd);
parent.installListBox.setCommandListener(parent);
/*
* We need to prevent "flashing" on fast development
* platforms.
*/
while (System.currentTimeMillis() - parent.lastDisplayChange
< GraphicalInstaller.ALERT_TIMEOUT) ;
parent.display.setCurrent(parent.installListBox);
return;
}
errorMessage = Resource.getString(ResourceConstants.AMS_DISC_APP_CHECK_URL_MSG);
} catch (IllegalArgumentException ex) {
errorMessage = Resource.getString(ResourceConstants.AMS_DISC_APP_URL_FORMAT_MSG);
} catch (Exception ex) {
errorMessage = ex.getMessage();
}
} catch (Exception ex) {
errorMessage = Resource.getString(ResourceConstants.AMS_DISC_APP_CONN_FAILED_MSG);
} finally {
if (parent.progressForm != null) {
// end the background thread of progress gauge.
Gauge progressGauge = (Gauge) parent.progressForm.get(parent.progressGaugeIndex);
progressGauge.setValue(Gauge.CONTINUOUS_IDLE);
}
try {
conn.close();
in.close();
} catch (Exception e) {
if (Logging.REPORT_LEVEL <= Logging.WARNING) {
Logging.report(Logging.WARNING, LogChannels.LC_AMS, "close threw an Exception");
}
}
}
Alert a =
new Alert(
Resource.getString(ResourceConstants.ERROR), errorMessage, null, AlertType.ERROR);
a.setTimeout(Alert.FOREVER);
parent.display.setCurrent(a, parent.urlTextBox);
}