@Override
public void propertyChange(PropertyChangeEvent evt) {
String propName = evt.getPropertyName();
if (Task.COMPLETED_PROP.equals(propName)) {
Task task = (Task) evt.getSource();
List<Task> oldTasks, newTasks;
synchronized (tasks) {
oldTasks = new ArrayList<Task>(tasks);
tasks.remove(task);
// remove all the children tasks too
TaskManager.this.cancelTasksByOwner(task);
newTasks = new ArrayList<Task>(tasks);
task.removePropertyChangeListener(taskPropListener);
}
firePropertyChange(REMOVE_TASK_PROP, oldTasks, newTasks);
// unblock gui
GUIBlocker blocker = task.getGUIBlocker();
if (blocker != null) blocker.unblock();
}
}
/**
* Add a new task to the task manager, you can choose whether to notify the task manager
* listeners, for example, if false, the status bar will not change.
*
* @param task new task
* @param notify choose whether to notify
*/
public void addTask(Task task, boolean notify) {
// add task the task list
List<Task> oldTasks, newTasks;
synchronized (tasks) {
oldTasks = new ArrayList<Task>(tasks);
tasks.add(task);
newTasks = new ArrayList<Task>(tasks);
task.addPropertyChangeListener(taskPropListener);
}
// notify the status bar
if (notify) {
firePropertyChange(ADD_TASK_PROP, oldTasks, newTasks);
}
// block gui
// ToDo: this might need a separate thread
GUIBlocker blocker = task.getGUIBlocker();
if (blocker != null) blocker.block();
// execute the task
executor.execute(task);
}