/**
* 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;
}
/**
* Display an exception to the user, with a done command.
*
* @param title exception form's title
* @param message exception message
*/
private void displayException(String title, String message) {
Alert a = new Alert(title, message, null, AlertType.ERROR);
a.setTimeout(Alert.FOREVER);
a.setCommandListener(this);
display.setCurrent(a);
}
/**
* Create and initialize a new discovery application MIDlet. The saved URL is retrieved and the
* list of MIDlets are retrieved.
*/
public DiscoveryApp() {
String storageName;
display = Display.getDisplay(this);
GraphicalInstaller.initSettings();
restoreSettings();
// get the URL of a list of suites to install
getUrl();
}
/**
* Respond to a command issued on any Screen.
*
* @param c command activated by the user
* @param s the Displayable the command was on.
*/
public void commandAction(Command c, Displayable s) {
if (c == discoverCmd) {
// user wants to discover the suites that can be installed
discoverSuitesToInstall(urlTextBox.getString());
} else if (s == installListBox && (c == List.SELECT_COMMAND || c == installCmd)) {
installSuite(installListBox.getSelectedIndex());
} else if (c == backCmd) {
display.setCurrent(urlTextBox);
} else if (c == saveCmd) {
saveURLSetting();
} else if (c == endCmd || c == Alert.DISMISS_COMMAND) {
// goto back to the manager midlet
notifyDestroyed();
}
}
/**
* 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);
}
/** Ask the user for the URL. */
private void getUrl() {
try {
if (urlTextBox == null) {
urlTextBox =
new TextBox(
Resource.getString(ResourceConstants.AMS_DISC_APP_WEBSITE_INSTALL),
defaultInstallListUrl,
1024,
TextField.ANY);
urlTextBox.addCommand(endCmd);
urlTextBox.addCommand(saveCmd);
urlTextBox.addCommand(discoverCmd);
urlTextBox.setCommandListener(this);
}
display.setCurrent(urlTextBox);
} catch (Exception ex) {
displayException(Resource.getString(ResourceConstants.EXCEPTION), ex.toString());
}
}
/**
* Install a suite.
*
* @param selectedSuite index into the installList
*/
private void installSuite(int selectedSuite) {
MIDletStateHandler midletStateHandler = MIDletStateHandler.getMidletStateHandler();
MIDletSuite midletSuite = midletStateHandler.getMIDletSuite();
SuiteDownloadInfo suite;
String displayName;
suite = (SuiteDownloadInfo) installList.elementAt(selectedSuite);
midletSuite.setTempProperty(null, "arg-0", "I");
midletSuite.setTempProperty(null, "arg-1", suite.url);
midletSuite.setTempProperty(null, "arg-2", suite.label);
displayName = Resource.getString(ResourceConstants.INSTALL_APPLICATION);
try {
midletStateHandler.startMIDlet("com.sun.midp.installer.GraphicalInstaller", displayName);
/*
* Give the create MIDlet notification 1 second to get to
* AMS.
*/
Thread.sleep(1000);
notifyDestroyed();
} catch (Exception ex) {
StringBuffer sb = new StringBuffer();
sb.append(displayName);
sb.append("\n");
sb.append(Resource.getString(ResourceConstants.ERROR));
sb.append(": ");
sb.append(ex.toString());
Alert a =
new Alert(
Resource.getString(ResourceConstants.AMS_CANNOT_START),
sb.toString(),
null,
AlertType.ERROR);
a.setTimeout(Alert.FOREVER);
display.setCurrent(a, urlTextBox);
}
}
