public synchronized void removeDataAccessController(DataAccessController controller) {
List<DataAccessController> oldControllers, newControllers;
int index = controllers.indexOf(controller);
if (index >= 0) {
oldControllers = new ArrayList<DataAccessController>(controllers);
// get the next available controller's index
int nextIndex = controllers.size() - 1 > index ? index : index - 1;
controllers.remove(controller);
if (foregroundController != null && foregroundController.equals(controller)) {
setForegroundDataAccessController(nextIndex >= 0 ? controllers.get(nextIndex) : null);
}
controller.close();
newControllers = new ArrayList<DataAccessController>(controllers);
EventBus.publish(
new RemoveDataSourceEvent<DataAccessController>(this, oldControllers, newControllers));
}
}
/**
* Replace one data access controller with another, and retain the position in the
* DataAccessMonitor.
*
* @param original original data access controller
* @param replacement replacement data access controller
*/
public synchronized void replaceDataAccessController(
DataAccessController original, DataAccessController replacement) {
List<DataAccessController> oldControllers, newControllers;
int index = controllers.indexOf(original);
if (index >= 0) {
oldControllers = new ArrayList<DataAccessController>(controllers);
controllers.add(index, replacement);
controllers.remove(original);
if (foregroundController != null && foregroundController.equals(original)) {
setForegroundDataAccessController(replacement);
}
original.close();
newControllers = new ArrayList<DataAccessController>(controllers);
// notify others
EventBus.publish(
new AddDataSourceEvent<DataAccessController>(this, oldControllers, newControllers));
} else {
// add as a new data access controller
addDataAccessController(replacement);
}
}
/**
* Check whether the given data access controller is foreground data access controller
*
* @param controller data access controller
* @return boolean true if it is foreground data access controller
*/
public synchronized boolean isForegroundDataAccessController(DataAccessController controller) {
return foregroundController != null && foregroundController.equals(controller);
}