*/
package jexer.backend;
-import java.util.LinkedList;
+import java.util.ArrayList;
import java.util.List;
+import jexer.event.TCommandEvent;
import jexer.event.TInputEvent;
+import static jexer.TCommand.*;
/**
* MultiBackend mirrors its I/O to several backends.
/**
* The list of backends to use.
*/
- private List<Backend> backends = new LinkedList<Backend>();
+ private List<Backend> backends = new ArrayList<Backend>();
+
+ /**
+ * The SessionInfo to return.
+ */
+ private SessionInfo sessionInfo;
// ------------------------------------------------------------------------
// Constructors -----------------------------------------------------------
} else {
multiScreen = new MultiScreen(backend.getScreen());
}
+ if (backend instanceof GenericBackend) {
+ ((GenericBackend) backend).abortOnDisconnect = false;
+ }
+ sessionInfo = backend.getSessionInfo();
}
// ------------------------------------------------------------------------
* @return the SessionInfo
*/
public SessionInfo getSessionInfo() {
- return backends.get(0).getSessionInfo();
+ return sessionInfo;
}
/**
* @return if true, getEvents() has something to return to the application
*/
public boolean hasEvents() {
+ if (backends.size() == 0) {
+ return true;
+ }
for (Backend backend: backends) {
if (backend.hasEvents()) {
return true;
* @param queue list to append new events to
*/
public void getEvents(List<TInputEvent> queue) {
+ List<Backend> backendsToRemove = null;
for (Backend backend: backends) {
- backend.getEvents(queue);
+ if (backend.hasEvents()) {
+ backend.getEvents(queue);
+
+ // This default backend assumes a single user, and if that
+ // user becomes disconnected we should terminate the
+ // application.
+ if (queue.size() > 0) {
+ TInputEvent event = queue.get(queue.size() - 1);
+ if (event instanceof TCommandEvent) {
+ TCommandEvent command = (TCommandEvent) event;
+ if (command.equals(cmBackendDisconnect)) {
+ if (backendsToRemove == null) {
+ backendsToRemove = new ArrayList<Backend>();
+ }
+ backendsToRemove.add(backend);
+ }
+ }
+ }
+ }
+ }
+ if (backendsToRemove != null) {
+ for (Backend backend: backendsToRemove) {
+ multiScreen.removeScreen(backend.getScreen());
+ backends.remove(backend);
+ backend.shutdown();
+ }
+ }
+ if (backends.size() == 0) {
+ queue.add(new TCommandEvent(cmAbort));
}
}
} else {
multiScreen.addScreen(backend.getScreen());
}
+ if (backend instanceof GenericBackend) {
+ ((GenericBackend) backend).abortOnDisconnect = false;
+ }
}
/**