/**
* This method first sends a message to the widget specified by handle to get the list of its
* callbacks, then the server subscribes to each of them. The subscription is added to calls
*
* @param handle The widget to subscribe to
* @param calls The subscription results are added to calls
*/
private void addWidgetCallbacksSubscription(WidgetHandle handle, Callbacks calls) {
// Get all callbacks of each widget
DataObject widgetCalls =
getWidgetCallbacks(handle.getHostName(), handle.getPort(), handle.getId());
String error = new Error(widgetCalls).getError();
if (error != null) {
if (error.equals(Error.NO_ERROR)) {
Callbacks cbacks = new Callbacks(widgetCalls);
// Subscribe to each callback received by the widget
for (int j = 0; j < cbacks.numCallbacks(); j++) {
Callback call = cbacks.getCallbackAt(j);
ClientSideSubscriber css =
new ClientSideSubscriber(
this.getId(),
this.getHostName(),
this.getPort(),
call.getName(),
null,
handle.getAttributes());
println("Server in <addWidgetCallbacksSubscription> subscribe to:" + css);
Error done =
subscribeTo(
(Handler) this, handle.getId(), handle.getHostName(), handle.getPort(), css);
// The unique id identifying the subscription is in css
// call.setName(handle.getId()+"_"+call.getName()); // before
call.setName(css.getSubscriptionId());
calls.addCallback(call);
}
}
}
}
/**
* This method is called to subscribe to the widgets this server is interested in. It allows the
* server to act as a proxy to the callbacks provided by each individual widget. This should be
* called after a constructor sets the widget handles to use or after setWidgets() has been
* called.
*
* @see #setCallbacks()
*/
protected Callbacks initCallbacks() {
// this protects us against the Widget constructor
// that calls us too early (we havent' got the widgets yet)
// it's good practice anyway
if (widgets == null) {
return null;
}
Callbacks calls = new Callbacks();
// For all widgets
for (int i = 0; i < widgets.size(); i++) {
WidgetHandle handle = widgets.getWidgetHandleAt(i);
addWidgetCallbacksSubscription(handle, calls);
}
calls.addCallbacks(setServerCallbacks());
return calls;
}
public TourApp_122(
int localport,
java.lang.String userid,
java.lang.String configFile,
java.lang.String demoFile) {
try {
server = new context.arch.BaseObject(localport);
port = localport;
this.userid = userid;
demo = new context.apps.Tour.DemoFile(demoFile);
context.arch.util.XMLURLReader reader = new context.arch.util.XMLURLReader(configFile);
context.arch.comm.DataObject data = reader.getParsedData();
context.arch.util.Configuration config = new context.arch.util.Configuration(data);
context.arch.util.ConfigObjects interpreters = config.getInterpreterConfigurations();
if (interpreters != null) {
context.arch.util.ConfigObject interpreter =
(context.arch.util.ConfigObject) interpreters.getEnumeration().nextElement();
intId = interpreter.getId();
intHost = interpreter.getHost();
intPort = Integer.parseInt(interpreter.getPort());
}
context.arch.util.ConfigObjects servers = config.getServerConfigurations();
if (servers != null) {
for (java.util.Enumeration e = servers.getEnumeration(); e.hasMoreElements(); ) {
context.arch.util.ConfigObject serverObj =
(context.arch.util.ConfigObject) e.nextElement();
if (serverObj.getId().indexOf(userid) != -1) {
java.lang.String serverId = serverObj.getId();
java.lang.String serverHost = serverObj.getHost();
int serverPort = Integer.parseInt(serverObj.getPort());
context.arch.comm.DataObject callbacks =
server.getWidgetCallbacks(serverHost, serverPort, serverId);
java.lang.String callbacksError = (new context.arch.util.Error(callbacks)).getError();
context.arch.subscriber.Callbacks calls = null;
if (callbacksError.equals(Error.NO_ERROR)) {
calls = new context.arch.subscriber.Callbacks(callbacks);
}
for (int i = 0; i < calls.numCallbacks(); i++) {
context.arch.subscriber.Callback callback = calls.getCallbackAt(i);
if (callback.getName().indexOf(WTourRegistration.UPDATE) != -1) {
context.arch.util.Error error =
server.subscribeTo(
this,
port,
SUBSCRIBER_ID,
serverHost,
serverPort,
serverId,
callback.getName(),
SUBSCRIBER_ID + Constants.SPACER + WTourRegistration.UPDATE);
} else {
if (callback.getName().indexOf(WTourDemo.VISIT) != -1) {
context.arch.util.Error error =
server.subscribeTo(
this,
port,
SUBSCRIBER_ID,
serverHost,
serverPort,
serverId,
callback.getName(),
SUBSCRIBER_ID + Constants.SPACER + WTourDemo.VISIT);
} else {
if (callback.getName().indexOf(WTourDemo.INTEREST) != -1) {
context.arch.util.Error error =
server.subscribeTo(
this,
port,
SUBSCRIBER_ID,
serverHost,
serverPort,
serverId,
callback.getName(),
SUBSCRIBER_ID + Constants.SPACER + WTourDemo.INTEREST);
} else {
if (callback.getName().indexOf(WTourEnd.END) != -1) {
context.arch.util.Error error =
server.subscribeTo(
this,
port,
SUBSCRIBER_ID,
serverHost,
serverPort,
serverId,
callback.getName(),
SUBSCRIBER_ID + Constants.SPACER + WTourEnd.END);
}
}
}
}
}
}
}
}
} catch (java.net.MalformedURLException mue) {
System.out.println("TourApp_122 MalformedURL: " + mue);
} catch (context.arch.comm.language.DecodeException de) {
System.out.println("TourApp_122 Decode: " + de);
}
}