public boolean canPaste(
ListScreen source, Selection selection, CommandContext context, SelectionItem parentItem) {
CopyAndPaste dao = getDao(context.getScreen());
Object parent = getParent(parentItem, context);
for (SelectionItem item : selection) {
if (!dao.canPasteCopy(item.getObject(), parent)) {
return false;
}
}
return true;
}
@Override
public boolean isEnabled(CommandContext context, Selection selection) {
if (selection.isEmpty()) {
return false;
}
CopyAndPaste dao = getDao(context.getScreen());
for (SelectionItem item : selection) {
if (!dao.canCopy(item.getObject())) {
return false;
}
}
return true;
}
private Object getParent(SelectionItem parentItem, CommandContext context) {
Object parent = parentItem.getObject();
if (parent == null) {
parent = context.getParent();
}
return parent;
}
public void paste(
ListScreen source,
Selection selection,
CommandContext context,
SelectionItem parentItem,
NotificationResult notification) {
CopyAndPaste dao = getDao(context.getScreen());
Object parent = getParent(parentItem, context);
for (SelectionItem item : selection) {
dao.pasteCopy(item.getObject(), parent);
}
notification.setDefaultMessage("{0,choice,1#Item has|1<{0} items have} been copied.");
}