/**
* Remove item from the model.
*
* <p>If the model and thus item are 'running', the item will be 'stopped'.
*
* @param item
* @throws RuntimeException if item is already in model
*/
public void removeItem(final ModelItem item) {
if (is_running && item instanceof PVItem) {
final PVItem pv = (PVItem) item;
pv.stop();
// Delete its samples:
// For one, so save memory.
// Also, in case item is later added back in, its old samples
// will have gaps because the item was stopped
pv.getSamples().clear();
}
if (!items.remove(item)) throw new RuntimeException("Unknown item " + item.getName());
// Detach item from model
item.setModel(null);
// Notify listeners of removed item
for (ModelListener listener : listeners) listener.itemRemoved(item);
// Remove axis if unused
AxisConfig axis = item.getAxis();
item.setAxis(null);
if (countActiveItemsOnAxis(axis) == 0) {
removeAxis(axis);
fireAxisChangedEvent(null);
}
}
/**
* @param axis Axis to remove
* @throws Error when axis not in model, or axis in use by model item
*/
public void removeAxis(final AxisConfig axis) {
if (!axes.contains(axis)) throw new Error("Unknown AxisConfig");
for (ModelItem item : items)
if (item.getAxis() == axis) throw new Error("Cannot removed AxisConfig while in use");
axis.setModel(null);
axes.remove(axis);
fireAxisChangedEvent(null);
}
/**
* Add axis at given index. Adding at '1' means the new axis will be at index '1', and what used
* to be at '1' will be at '2' and so on.
*
* @param index Index where axis will be placed.
* @param axis New axis to add
*/
public void addAxis(final int index, final AxisConfig axis) {
axes.add(index, axis);
axis.setModel(this);
fireAxisChangedEvent(null);
}